From 7c5c641a930ed06ca317ee39faee7d5824266348 Mon Sep 17 00:00:00 2001 From: José Roberto de Souza Date: Mon, 3 Dec 2018 16:33:55 -0800 Subject: drm/i915: Disable PSR in Apple panels MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit i915 yet don't support PSR in Apple panels, so lets keep it disabled while we work on that. v2: Renamed DP_DPCD_QUIRK_PSR_NOT_CURRENTLY_SUPPORTED to DP_DPCD_QUIRK_NO_PSR (Ville) v3: Adding documentation to DP_DPCD_QUIRK_NO_PSR(Dhinakaran and Jani) Fixed typo in comment of the new quirk entry(Jani) Fixes: 598c6cfe0690 (drm/i915/psr: Enable PSR1 on gen-9+ HW) Cc: Jani Nikula Cc: Ville Syrjälä Cc: Rodrigo Vivi Cc: Dhinakaran Pandiyan Reviewed-by: Dhinakaran Pandiyan Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20181204003403.23361-1-jose.souza@intel.com --- include/drm/drm_dp_helper.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include') diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 5736c942c85b..c33e89c51d9f 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1365,6 +1365,13 @@ enum drm_dp_quirk { * to 16 bits. So will give a constant value (0x8000) for compatability. */ DP_DPCD_QUIRK_CONSTANT_N, + /** + * @DP_DPCD_QUIRK_NO_PSR + * + * The device does not support PSR even if reports that it supports or + * driver still need to implement proper handling for such device. + */ + DP_DPCD_QUIRK_NO_PSR, }; /** -- cgit v1.2.3-71-gd317 From 71b15621f0972aac3512848691285663c66c8203 Mon Sep 17 00:00:00 2001 From: José Roberto de Souza Date: Mon, 3 Dec 2018 16:34:01 -0800 Subject: drm: Add the PSR SU granularity registers offsets MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Source is required to comply to sink SU granularity when DP_PSR2_SU_GRANULARITY_REQUIRED is set in DP_PSR_CAPS, so adding the registers offsets. v2: Also adding DP_PSR2_SU_Y_GRANULARITY(Rodrigo) Cc: Dhinakaran Pandiyan Cc: Rodrigo Vivi Reviewed-by: Dhinakaran Pandiyan Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20181204003403.23361-7-jose.souza@intel.com --- include/drm/drm_dp_helper.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index c33e89c51d9f..18cfde45b8ed 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -314,6 +314,10 @@ # define DP_PSR_SETUP_TIME_SHIFT 1 # define DP_PSR2_SU_Y_COORDINATE_REQUIRED (1 << 4) /* eDP 1.4a */ # define DP_PSR2_SU_GRANULARITY_REQUIRED (1 << 5) /* eDP 1.4b */ + +#define DP_PSR2_SU_X_GRANULARITY 0x072 /* eDP 1.4b */ +#define DP_PSR2_SU_Y_GRANULARITY 0x074 /* eDP 1.4b */ + /* * 0x80-0x8f describe downstream port capabilities, but there are two layouts * based on whether DP_DETAILED_CAP_INFO_AVAILABLE was set. If it was not, -- cgit v1.2.3-71-gd317 From ed17b555303c74a35f226268523b1695dbd4617d Mon Sep 17 00:00:00 2001 From: José Roberto de Souza Date: Wed, 5 Dec 2018 10:48:50 -0800 Subject: drm: Fix documentation generation for DP_DPCD_QUIRK_NO_PSR MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The DP_DPCD_QUIRK_NO_PSR comment is missing colon causing this warning when generating kernel documentation. ./include/drm/drm_dp_helper.h:1374: warning: Incorrect use of kernel-doc format: * @DP_DPCD_QUIRK_NO_PSR Fixes: 7c5c641a930e (drm/i915: Disable PSR in Apple panels) Cc: Dhinakaran Pandiyan Signed-off-by: José Roberto de Souza Reviewed-by: Dhinakaran Pandiyan Link: https://patchwork.freedesktop.org/patch/msgid/20181205184850.13218-1-jose.souza@intel.com --- include/drm/drm_dp_helper.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 18cfde45b8ed..c223c87ef119 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1370,7 +1370,7 @@ enum drm_dp_quirk { */ DP_DPCD_QUIRK_CONSTANT_N, /** - * @DP_DPCD_QUIRK_NO_PSR + * @DP_DPCD_QUIRK_NO_PSR: * * The device does not support PSR even if reports that it supports or * driver still need to implement proper handling for such device. -- cgit v1.2.3-71-gd317 From b312d8ca3a7cebe19941d969a51f2b7f899b81e2 Mon Sep 17 00:00:00 2001 From: Christian König Date: Wed, 14 Nov 2018 16:11:06 +0100 Subject: dma-buf: make fence sequence numbers 64 bit v2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit For a lot of use cases we need 64bit sequence numbers. Currently drivers overload the dma_fence structure to store the additional bits. Stop doing that and make the sequence number in the dma_fence always 64bit. For compatibility with hardware which can do only 32bit sequences the comparisons in __dma_fence_is_later only takes the lower 32bits as significant when the upper 32bits are all zero. v2: change the logic in __dma_fence_is_later Signed-off-by: Christian König Reviewed-by: Chunming Zhou Link: https://patchwork.freedesktop.org/patch/266927/ --- drivers/dma-buf/dma-fence.c | 2 +- drivers/dma-buf/sw_sync.c | 2 +- drivers/dma-buf/sync_file.c | 4 ++-- drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c | 2 +- drivers/gpu/drm/i915/i915_sw_fence.c | 2 +- drivers/gpu/drm/i915/intel_engine_cs.c | 2 +- drivers/gpu/drm/vgem/vgem_fence.c | 4 ++-- include/linux/dma-fence.h | 22 +++++++++++++++------- 8 files changed, 24 insertions(+), 16 deletions(-) (limited to 'include') diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index 136ec04d683f..3aa8733f832a 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -649,7 +649,7 @@ EXPORT_SYMBOL(dma_fence_wait_any_timeout); */ void dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, - spinlock_t *lock, u64 context, unsigned seqno) + spinlock_t *lock, u64 context, u64 seqno) { BUG_ON(!lock); BUG_ON(!ops || !ops->get_driver_name || !ops->get_timeline_name); diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c index 53c1d6d36a64..32dcf7b4c935 100644 --- a/drivers/dma-buf/sw_sync.c +++ b/drivers/dma-buf/sw_sync.c @@ -172,7 +172,7 @@ static bool timeline_fence_enable_signaling(struct dma_fence *fence) static void timeline_fence_value_str(struct dma_fence *fence, char *str, int size) { - snprintf(str, size, "%d", fence->seqno); + snprintf(str, size, "%lld", fence->seqno); } static void timeline_fence_timeline_value_str(struct dma_fence *fence, diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c index 35dd06479867..4f6305ca52c8 100644 --- a/drivers/dma-buf/sync_file.c +++ b/drivers/dma-buf/sync_file.c @@ -144,7 +144,7 @@ char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len) } else { struct dma_fence *fence = sync_file->fence; - snprintf(buf, len, "%s-%s%llu-%d", + snprintf(buf, len, "%s-%s%llu-%lld", fence->ops->get_driver_name(fence), fence->ops->get_timeline_name(fence), fence->context, @@ -258,7 +258,7 @@ static struct sync_file *sync_file_merge(const char *name, struct sync_file *a, i_b++; } else { - if (pt_a->seqno - pt_b->seqno <= INT_MAX) + if (__dma_fence_is_later(pt_a->seqno, pt_b->seqno)) add_fence(fences, &i, pt_a); else add_fence(fences, &i, pt_b); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c index 12f2bf97611f..bfaf5c6323be 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c @@ -388,7 +388,7 @@ void amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager *sa_manager, soffset, eoffset, eoffset - soffset); if (i->fence) - seq_printf(m, " protected by 0x%08x on context %llu", + seq_printf(m, " protected by 0x%016llx on context %llu", i->fence->seqno, i->fence->context); seq_printf(m, "\n"); diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c index 6dbeed079ae5..11bcdabd5177 100644 --- a/drivers/gpu/drm/i915/i915_sw_fence.c +++ b/drivers/gpu/drm/i915/i915_sw_fence.c @@ -393,7 +393,7 @@ static void timer_i915_sw_fence_wake(struct timer_list *t) if (!fence) return; - pr_notice("Asynchronous wait on fence %s:%s:%x timed out (hint:%pS)\n", + pr_notice("Asynchronous wait on fence %s:%s:%llx timed out (hint:%pS)\n", cb->dma->ops->get_driver_name(cb->dma), cb->dma->ops->get_timeline_name(cb->dma), cb->dma->seqno, diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 759c0fd58f8c..dfafa79171df 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -1239,7 +1239,7 @@ static void print_request(struct drm_printer *m, x = print_sched_attr(rq->i915, &rq->sched.attr, buf, x, sizeof(buf)); - drm_printf(m, "%s%x%s [%llx:%x]%s @ %dms: %s\n", + drm_printf(m, "%s%x%s [%llx:%llx]%s @ %dms: %s\n", prefix, rq->global_seqno, i915_request_completed(rq) ? "!" : "", diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c index c1c420afe2dd..eb17c0cd3727 100644 --- a/drivers/gpu/drm/vgem/vgem_fence.c +++ b/drivers/gpu/drm/vgem/vgem_fence.c @@ -53,13 +53,13 @@ static void vgem_fence_release(struct dma_fence *base) static void vgem_fence_value_str(struct dma_fence *fence, char *str, int size) { - snprintf(str, size, "%u", fence->seqno); + snprintf(str, size, "%llu", fence->seqno); } static void vgem_fence_timeline_value_str(struct dma_fence *fence, char *str, int size) { - snprintf(str, size, "%u", + snprintf(str, size, "%llu", dma_fence_is_signaled(fence) ? fence->seqno : 0); } diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h index 999e4b104410..6b788467b2e3 100644 --- a/include/linux/dma-fence.h +++ b/include/linux/dma-fence.h @@ -77,7 +77,7 @@ struct dma_fence { struct list_head cb_list; spinlock_t *lock; u64 context; - unsigned seqno; + u64 seqno; unsigned long flags; ktime_t timestamp; int error; @@ -244,7 +244,7 @@ struct dma_fence_ops { }; void dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, - spinlock_t *lock, u64 context, unsigned seqno); + spinlock_t *lock, u64 context, u64 seqno); void dma_fence_release(struct kref *kref); void dma_fence_free(struct dma_fence *fence); @@ -414,9 +414,17 @@ dma_fence_is_signaled(struct dma_fence *fence) * Returns true if f1 is chronologically later than f2. Both fences must be * from the same context, since a seqno is not common across contexts. */ -static inline bool __dma_fence_is_later(u32 f1, u32 f2) +static inline bool __dma_fence_is_later(u64 f1, u64 f2) { - return (int)(f1 - f2) > 0; + /* This is for backward compatibility with drivers which can only handle + * 32bit sequence numbers. Use a 64bit compare when any of the higher + * bits are none zero, otherwise use a 32bit compare with wrap around + * handling. + */ + if (upper_32_bits(f1) || upper_32_bits(f2)) + return f1 > f2; + + return (int)(lower_32_bits(f1) - lower_32_bits(f2)) > 0; } /** @@ -548,21 +556,21 @@ u64 dma_fence_context_alloc(unsigned num); do { \ struct dma_fence *__ff = (f); \ if (IS_ENABLED(CONFIG_DMA_FENCE_TRACE)) \ - pr_info("f %llu#%u: " fmt, \ + pr_info("f %llu#%llu: " fmt, \ __ff->context, __ff->seqno, ##args); \ } while (0) #define DMA_FENCE_WARN(f, fmt, args...) \ do { \ struct dma_fence *__ff = (f); \ - pr_warn("f %llu#%u: " fmt, __ff->context, __ff->seqno, \ + pr_warn("f %llu#%llu: " fmt, __ff->context, __ff->seqno,\ ##args); \ } while (0) #define DMA_FENCE_ERR(f, fmt, args...) \ do { \ struct dma_fence *__ff = (f); \ - pr_err("f %llu#%u: " fmt, __ff->context, __ff->seqno, \ + pr_err("f %llu#%llu: " fmt, __ff->context, __ff->seqno, \ ##args); \ } while (0) -- cgit v1.2.3-71-gd317 From 36e7999dc19a1a6e76258020a49f7f7836018e46 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Mon, 3 Dec 2018 14:24:33 -0800 Subject: drm/v3d: Document cache flushing ABI. Right now, userspace doesn't do any L2T writes, but we should lay out our expectations for how it works. v2: Explicitly mention the VCD cache flushing requirements and that we'll flush the other caches before each of the CLs. Signed-off-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20181203222438.25417-1-eric@anholt.net Reviewed-by: Dave Emett --- include/uapi/drm/v3d_drm.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include') diff --git a/include/uapi/drm/v3d_drm.h b/include/uapi/drm/v3d_drm.h index 35c7d813c66e..ea70669d2138 100644 --- a/include/uapi/drm/v3d_drm.h +++ b/include/uapi/drm/v3d_drm.h @@ -52,6 +52,14 @@ extern "C" { * * This asks the kernel to have the GPU execute an optional binner * command list, and a render command list. + * + * The L1T, slice, L2C, L2T, and GCA caches will be flushed before + * each CL executes. The VCD cache should be flushed (if necessary) + * by the submitted CLs. The TLB writes are guaranteed to have been + * flushed by the time the render done IRQ happens, which is the + * trigger for out_sync. Any dirtying of cachelines by the job (only + * possible using TMU writes) must be flushed by the caller using the + * CL's cache flush commands. */ struct drm_v3d_submit_cl { /* Pointer to the binner command list. -- cgit v1.2.3-71-gd317 From 16bff572cc660f19e58c99941368dea050b36a05 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 28 Nov 2018 23:12:34 +0100 Subject: drm/dp-mst-helper: Remove hotplug callback When everyone implements it exactly the same way, among all 4 implementations, there's not really a need to overwrite this at all. Aside: drm_kms_helper_hotplug_event is pretty much core functionality at this point. Probably should move it there. Reviewed-by: Lyude Paul Acked-by: Alex Deucher Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20181128221234.15054-1-daniel.vetter@ffwll.ch --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 9 --------- drivers/gpu/drm/drm_dp_mst_topology.c | 7 ++++--- drivers/gpu/drm/i915/intel_dp_mst.c | 10 ---------- drivers/gpu/drm/nouveau/dispnv50/disp.c | 8 -------- drivers/gpu/drm/radeon/radeon_dp_mst.c | 9 --------- include/drm/drm_dp_mst_helper.h | 2 -- 6 files changed, 4 insertions(+), 41 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index d02c32a1039c..9fdeca096407 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -396,14 +396,6 @@ static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, drm_connector_put(connector); } -static void dm_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) -{ - struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr); - struct drm_device *dev = master->base.dev; - - drm_kms_helper_hotplug_event(dev); -} - static void dm_dp_mst_register_connector(struct drm_connector *connector) { struct drm_device *dev = connector->dev; @@ -420,7 +412,6 @@ static void dm_dp_mst_register_connector(struct drm_connector *connector) static const struct drm_dp_mst_topology_cbs dm_mst_cbs = { .add_connector = dm_dp_add_mst_connector, .destroy_connector = dm_dp_destroy_mst_connector, - .hotplug = dm_dp_mst_hotplug, .register_connector = dm_dp_mst_register_connector }; diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 529414556962..a9b684f14d14 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -33,6 +33,7 @@ #include #include #include +#include /** * DOC: dp mst helper @@ -1639,7 +1640,7 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr, for (i = 0; i < txmsg->reply.u.link_addr.nports; i++) { drm_dp_add_port(mstb, mgr->dev, &txmsg->reply.u.link_addr.ports[i]); } - (*mgr->cbs->hotplug)(mgr); + drm_kms_helper_hotplug_event(mgr->dev); } } else { mstb->link_address_sent = false; @@ -2412,7 +2413,7 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) drm_dp_update_port(mstb, &msg.u.conn_stat); DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type); - (*mgr->cbs->hotplug)(mgr); + drm_kms_helper_hotplug_event(mgr->dev); } else if (msg.req_type == DP_RESOURCE_STATUS_NOTIFY) { drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false); @@ -3109,7 +3110,7 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) send_hotplug = true; } if (send_hotplug) - (*mgr->cbs->hotplug)(mgr); + drm_kms_helper_hotplug_event(mgr->dev); } static struct drm_private_state * diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index 4de247ddf05f..f05427b74e34 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -517,20 +517,10 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, drm_connector_put(connector); } -static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) -{ - struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); - struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); - struct drm_device *dev = intel_dig_port->base.base.dev; - - drm_kms_helper_hotplug_event(dev); -} - static const struct drm_dp_mst_topology_cbs mst_cbs = { .add_connector = intel_dp_add_mst_connector, .register_connector = intel_dp_register_mst_connector, .destroy_connector = intel_dp_destroy_mst_connector, - .hotplug = intel_dp_mst_hotplug, }; static struct intel_dp_mst_encoder * diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 6cbbae3f438b..4a56841958c8 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1055,13 +1055,6 @@ nv50_mstm_prepare(struct nv50_mstm *mstm) } } -static void -nv50_mstm_hotplug(struct drm_dp_mst_topology_mgr *mgr) -{ - struct nv50_mstm *mstm = nv50_mstm(mgr); - drm_kms_helper_hotplug_event(mstm->outp->base.base.dev); -} - static void nv50_mstm_destroy_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_connector *connector) @@ -1113,7 +1106,6 @@ nv50_mstm = { .add_connector = nv50_mstm_add_connector, .register_connector = nv50_mstm_register_connector, .destroy_connector = nv50_mstm_destroy_connector, - .hotplug = nv50_mstm_hotplug, }; void diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c index 84b3ad2172a3..a0c70e27ab65 100644 --- a/drivers/gpu/drm/radeon/radeon_dp_mst.c +++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c @@ -320,19 +320,10 @@ static void radeon_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, DRM_DEBUG_KMS("\n"); } -static void radeon_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) -{ - struct radeon_connector *master = container_of(mgr, struct radeon_connector, mst_mgr); - struct drm_device *dev = master->base.dev; - - drm_kms_helper_hotplug_event(dev); -} - static const struct drm_dp_mst_topology_cbs mst_cbs = { .add_connector = radeon_dp_add_mst_connector, .register_connector = radeon_dp_register_mst_connector, .destroy_connector = radeon_dp_destroy_mst_connector, - .hotplug = radeon_dp_mst_hotplug, }; static struct diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index 59f005b419cf..371cc2816477 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -387,8 +387,6 @@ struct drm_dp_mst_topology_cbs { void (*register_connector)(struct drm_connector *connector); void (*destroy_connector)(struct drm_dp_mst_topology_mgr *mgr, struct drm_connector *connector); - void (*hotplug)(struct drm_dp_mst_topology_mgr *mgr); - }; #define DP_MAX_PAYLOAD (sizeof(unsigned long) * 8) -- cgit v1.2.3-71-gd317 From b962a12050a387e4bbf3a48745afe1d29d396b0d Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Mon, 22 Oct 2018 14:31:22 +0200 Subject: drm/atomic: integrate modeset lock with private objects Follow the same pattern of locking as with other state objects. This avoids boilerplate in the driver. Signed-off-by: Rob Clark Signed-off-by: Boris Brezillon Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20181022123122.30468-1-boris.brezillon@bootlin.com --- drivers/gpu/drm/drm_atomic.c | 19 ++++++++++++---- drivers/gpu/drm/drm_dp_mst_topology.c | 2 +- drivers/gpu/drm/drm_mode_config.c | 1 + drivers/gpu/drm/drm_modeset_lock.c | 8 +++++++ drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 2 +- drivers/gpu/drm/tegra/hub.c | 2 +- drivers/gpu/drm/vc4/vc4_kms.c | 3 ++- include/drm/drm_atomic.h | 37 +++++++++++++++++++++++++++++++- include/drm/drm_mode_config.h | 9 ++++++++ 9 files changed, 74 insertions(+), 9 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 9ac26437051b..008224f376fe 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -676,6 +676,7 @@ static void drm_atomic_plane_print_state(struct drm_printer *p, /** * drm_atomic_private_obj_init - initialize private object + * @dev: DRM device this object will be attached to * @obj: private object * @state: initial private object state * @funcs: pointer to the struct of function pointers that identify the object @@ -685,14 +686,18 @@ static void drm_atomic_plane_print_state(struct drm_printer *p, * driver private object that needs its own atomic state. */ void -drm_atomic_private_obj_init(struct drm_private_obj *obj, +drm_atomic_private_obj_init(struct drm_device *dev, + struct drm_private_obj *obj, struct drm_private_state *state, const struct drm_private_state_funcs *funcs) { memset(obj, 0, sizeof(*obj)); + drm_modeset_lock_init(&obj->lock); + obj->state = state; obj->funcs = funcs; + list_add_tail(&obj->head, &dev->mode_config.privobj_list); } EXPORT_SYMBOL(drm_atomic_private_obj_init); @@ -705,7 +710,9 @@ EXPORT_SYMBOL(drm_atomic_private_obj_init); void drm_atomic_private_obj_fini(struct drm_private_obj *obj) { + list_del(&obj->head); obj->funcs->atomic_destroy_state(obj, obj->state); + drm_modeset_lock_fini(&obj->lock); } EXPORT_SYMBOL(drm_atomic_private_obj_fini); @@ -715,8 +722,8 @@ EXPORT_SYMBOL(drm_atomic_private_obj_fini); * @obj: private object to get the state for * * This function returns the private object state for the given private object, - * allocating the state if needed. It does not grab any locks as the caller is - * expected to care of any required locking. + * allocating the state if needed. It will also grab the relevant private + * object lock to make sure that the state is consistent. * * RETURNS: * @@ -726,7 +733,7 @@ struct drm_private_state * drm_atomic_get_private_obj_state(struct drm_atomic_state *state, struct drm_private_obj *obj) { - int index, num_objs, i; + int index, num_objs, i, ret; size_t size; struct __drm_private_objs_state *arr; struct drm_private_state *obj_state; @@ -735,6 +742,10 @@ drm_atomic_get_private_obj_state(struct drm_atomic_state *state, if (obj == state->private_objs[i].ptr) return state->private_objs[i].state; + ret = drm_modeset_lock(&obj->lock, state->acquire_ctx); + if (ret) + return ERR_PTR(ret); + num_objs = state->num_private_objs + 1; size = sizeof(*state->private_objs) * num_objs; arr = krealloc(state->private_objs, size, GFP_KERNEL); diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index f0cbd5fad8fc..5a73a0b1c9cd 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -3221,7 +3221,7 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, /* max. time slots - one slot for MTP header */ mst_state->avail_slots = 63; - drm_atomic_private_obj_init(&mgr->base, + drm_atomic_private_obj_init(dev, &mgr->base, &mst_state->base, &mst_state_funcs); diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c index ee80788f2c40..931523c5bc9d 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -381,6 +381,7 @@ void drm_mode_config_init(struct drm_device *dev) INIT_LIST_HEAD(&dev->mode_config.property_list); INIT_LIST_HEAD(&dev->mode_config.property_blob_list); INIT_LIST_HEAD(&dev->mode_config.plane_list); + INIT_LIST_HEAD(&dev->mode_config.privobj_list); idr_init(&dev->mode_config.crtc_idr); idr_init(&dev->mode_config.tile_idr); ida_init(&dev->mode_config.connector_ida); diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c index 51f534db9107..81dd11901ffd 100644 --- a/drivers/gpu/drm/drm_modeset_lock.c +++ b/drivers/gpu/drm/drm_modeset_lock.c @@ -22,6 +22,7 @@ */ #include +#include #include #include @@ -394,6 +395,7 @@ EXPORT_SYMBOL(drm_modeset_unlock); int drm_modeset_lock_all_ctx(struct drm_device *dev, struct drm_modeset_acquire_ctx *ctx) { + struct drm_private_obj *privobj; struct drm_crtc *crtc; struct drm_plane *plane; int ret; @@ -414,6 +416,12 @@ int drm_modeset_lock_all_ctx(struct drm_device *dev, return ret; } + drm_for_each_privobj(privobj, dev) { + ret = drm_modeset_lock(&privobj->lock, ctx); + if (ret) + return ret; + } + return 0; } EXPORT_SYMBOL(drm_modeset_lock_all_ctx); diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index bddd625ab91b..f71d8cf2261b 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -144,7 +144,7 @@ static int mdp5_global_obj_init(struct mdp5_kms *mdp5_kms) state->mdp5_kms = mdp5_kms; - drm_atomic_private_obj_init(&mdp5_kms->glob_state, + drm_atomic_private_obj_init(mdp5_kms->dev, &mdp5_kms->glob_state, &state->base, &mdp5_global_state_funcs); return 0; diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c index 6112d9042979..3e26be5359cf 100644 --- a/drivers/gpu/drm/tegra/hub.c +++ b/drivers/gpu/drm/tegra/hub.c @@ -716,7 +716,7 @@ static int tegra_display_hub_init(struct host1x_client *client) if (!state) return -ENOMEM; - drm_atomic_private_obj_init(&hub->base, &state->base, + drm_atomic_private_obj_init(drm, &hub->base, &state->base, &tegra_display_hub_state_funcs); tegra->hub = hub; diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c index 1f94b9affe4b..0490edb192a1 100644 --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -432,7 +432,8 @@ int vc4_kms_load(struct drm_device *dev) ctm_state = kzalloc(sizeof(*ctm_state), GFP_KERNEL); if (!ctm_state) return -ENOMEM; - drm_atomic_private_obj_init(&vc4->ctm_manager, &ctm_state->base, + + drm_atomic_private_obj_init(dev, &vc4->ctm_manager, &ctm_state->base, &vc4_ctm_state_funcs); drm_mode_config_reset(dev); diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index f9b35834c45d..cac4a1b6b0e8 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -228,8 +228,30 @@ struct drm_private_state_funcs { * Currently only tracks the state update functions and the opaque driver * private state itself, but in the future might also track which * &drm_modeset_lock is required to duplicate and update this object's state. + * + * All private objects must be initialized before the DRM device they are + * attached to is registered to the DRM subsystem (call to drm_dev_register()) + * and should stay around until this DRM device is unregistered (call to + * drm_dev_unregister()). In other words, private objects lifetime is tied + * to the DRM device lifetime. This implies that: + * + * 1/ all calls to drm_atomic_private_obj_init() must be done before calling + * drm_dev_register() + * 2/ all calls to drm_atomic_private_obj_fini() must be done after calling + * drm_dev_unregister() */ struct drm_private_obj { + /** + * @head: List entry used to attach a private object to a &drm_device + * (queued to &drm_mode_config.privobj_list). + */ + struct list_head head; + + /** + * @lock: Modeset lock to protect the state object. + */ + struct drm_modeset_lock lock; + /** * @state: Current atomic state for this driver private object. */ @@ -244,6 +266,18 @@ struct drm_private_obj { const struct drm_private_state_funcs *funcs; }; +/** + * drm_for_each_privobj() - private object iterator + * + * @privobj: pointer to the current private object. Updated after each + * iteration + * @dev: the DRM device we want get private objects from + * + * Allows one to iterate over all private objects attached to @dev + */ +#define drm_for_each_privobj(privobj, dev) \ + list_for_each_entry(privobj, &(dev)->mode_config.privobj_list, head) + /** * struct drm_private_state - base struct for driver private object state * @state: backpointer to global drm_atomic_state @@ -400,7 +434,8 @@ struct drm_connector_state * __must_check drm_atomic_get_connector_state(struct drm_atomic_state *state, struct drm_connector *connector); -void drm_atomic_private_obj_init(struct drm_private_obj *obj, +void drm_atomic_private_obj_init(struct drm_device *dev, + struct drm_private_obj *obj, struct drm_private_state *state, const struct drm_private_state_funcs *funcs); void drm_atomic_private_obj_fini(struct drm_private_obj *obj); diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 5dbeabdbaf91..d1e27836e0cd 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -512,6 +512,15 @@ struct drm_mode_config { */ struct list_head property_list; + /** + * @privobj_list: + * + * List of private objects linked with &drm_private_obj.head. This is + * invariant over the lifetime of a device and hence doesn't need any + * locks. + */ + struct list_head privobj_list; + int min_width, min_height; int max_width, max_height; const struct drm_mode_config_funcs *funcs; -- cgit v1.2.3-71-gd317 From 61a98b1b9a8c7a21a2d666a090dcf5f1c70c659f Mon Sep 17 00:00:00 2001 From: Christian König Date: Tue, 11 Dec 2018 18:34:41 +0800 Subject: drm/syncobj: remove drm_syncobj_cb and cleanup MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This completes "drm/syncobj: Drop add/remove_callback from driver interface" and cleans up the implementation a bit. Signed-off-by: Christian König Reviewed-by: Chunming Zhou Link: https://patchwork.freedesktop.org/patch/266255/ --- drivers/gpu/drm/drm_syncobj.c | 91 ++++++++++++++----------------------------- include/drm/drm_syncobj.h | 21 ---------- 2 files changed, 30 insertions(+), 82 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index db30a0e89db8..e19525af0cce 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -56,6 +56,16 @@ #include "drm_internal.h" #include +struct syncobj_wait_entry { + struct list_head node; + struct task_struct *task; + struct dma_fence *fence; + struct dma_fence_cb fence_cb; +}; + +static void syncobj_wait_syncobj_func(struct drm_syncobj *syncobj, + struct syncobj_wait_entry *wait); + /** * drm_syncobj_find - lookup and reference a sync object. * @file_private: drm file private pointer @@ -82,58 +92,33 @@ struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private, } EXPORT_SYMBOL(drm_syncobj_find); -static void drm_syncobj_add_callback_locked(struct drm_syncobj *syncobj, - struct drm_syncobj_cb *cb, - drm_syncobj_func_t func) +static void drm_syncobj_fence_add_wait(struct drm_syncobj *syncobj, + struct syncobj_wait_entry *wait) { - cb->func = func; - list_add_tail(&cb->node, &syncobj->cb_list); -} - -static int drm_syncobj_fence_get_or_add_callback(struct drm_syncobj *syncobj, - struct dma_fence **fence, - struct drm_syncobj_cb *cb, - drm_syncobj_func_t func) -{ - int ret; - - *fence = drm_syncobj_fence_get(syncobj); - if (*fence) - return 1; + if (wait->fence) + return; spin_lock(&syncobj->lock); /* We've already tried once to get a fence and failed. Now that we * have the lock, try one more time just to be sure we don't add a * callback when a fence has already been set. */ - if (syncobj->fence) { - *fence = dma_fence_get(rcu_dereference_protected(syncobj->fence, - lockdep_is_held(&syncobj->lock))); - ret = 1; - } else { - *fence = NULL; - drm_syncobj_add_callback_locked(syncobj, cb, func); - ret = 0; - } + if (syncobj->fence) + wait->fence = dma_fence_get( + rcu_dereference_protected(syncobj->fence, 1)); + else + list_add_tail(&wait->node, &syncobj->cb_list); spin_unlock(&syncobj->lock); - - return ret; } -void drm_syncobj_add_callback(struct drm_syncobj *syncobj, - struct drm_syncobj_cb *cb, - drm_syncobj_func_t func) +static void drm_syncobj_remove_wait(struct drm_syncobj *syncobj, + struct syncobj_wait_entry *wait) { - spin_lock(&syncobj->lock); - drm_syncobj_add_callback_locked(syncobj, cb, func); - spin_unlock(&syncobj->lock); -} + if (!wait->node.next) + return; -void drm_syncobj_remove_callback(struct drm_syncobj *syncobj, - struct drm_syncobj_cb *cb) -{ spin_lock(&syncobj->lock); - list_del_init(&cb->node); + list_del_init(&wait->node); spin_unlock(&syncobj->lock); } @@ -148,7 +133,7 @@ void drm_syncobj_replace_fence(struct drm_syncobj *syncobj, struct dma_fence *fence) { struct dma_fence *old_fence; - struct drm_syncobj_cb *cur, *tmp; + struct syncobj_wait_entry *cur, *tmp; if (fence) dma_fence_get(fence); @@ -162,7 +147,7 @@ void drm_syncobj_replace_fence(struct drm_syncobj *syncobj, if (fence != old_fence) { list_for_each_entry_safe(cur, tmp, &syncobj->cb_list, node) { list_del_init(&cur->node); - cur->func(syncobj, cur); + syncobj_wait_syncobj_func(syncobj, cur); } } @@ -608,13 +593,6 @@ drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data, &args->handle); } -struct syncobj_wait_entry { - struct task_struct *task; - struct dma_fence *fence; - struct dma_fence_cb fence_cb; - struct drm_syncobj_cb syncobj_cb; -}; - static void syncobj_wait_fence_func(struct dma_fence *fence, struct dma_fence_cb *cb) { @@ -625,11 +603,8 @@ static void syncobj_wait_fence_func(struct dma_fence *fence, } static void syncobj_wait_syncobj_func(struct drm_syncobj *syncobj, - struct drm_syncobj_cb *cb) + struct syncobj_wait_entry *wait) { - struct syncobj_wait_entry *wait = - container_of(cb, struct syncobj_wait_entry, syncobj_cb); - /* This happens inside the syncobj lock */ wait->fence = dma_fence_get(rcu_dereference_protected(syncobj->fence, lockdep_is_held(&syncobj->lock))); @@ -688,12 +663,8 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, */ if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) { - for (i = 0; i < count; ++i) { - drm_syncobj_fence_get_or_add_callback(syncobjs[i], - &entries[i].fence, - &entries[i].syncobj_cb, - syncobj_wait_syncobj_func); - } + for (i = 0; i < count; ++i) + drm_syncobj_fence_add_wait(syncobjs[i], &entries[i]); } do { @@ -742,9 +713,7 @@ done_waiting: cleanup_entries: for (i = 0; i < count; ++i) { - if (entries[i].syncobj_cb.func) - drm_syncobj_remove_callback(syncobjs[i], - &entries[i].syncobj_cb); + drm_syncobj_remove_wait(syncobjs[i], &entries[i]); if (entries[i].fence_cb.func) dma_fence_remove_callback(entries[i].fence, &entries[i].fence_cb); diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h index b1fe921f8e8f..7c6ed845c70d 100644 --- a/include/drm/drm_syncobj.h +++ b/include/drm/drm_syncobj.h @@ -28,8 +28,6 @@ #include "linux/dma-fence.h" -struct drm_syncobj_cb; - /** * struct drm_syncobj - sync object. * @@ -62,25 +60,6 @@ struct drm_syncobj { struct file *file; }; -typedef void (*drm_syncobj_func_t)(struct drm_syncobj *syncobj, - struct drm_syncobj_cb *cb); - -/** - * struct drm_syncobj_cb - callback for drm_syncobj_add_callback - * @node: used by drm_syncob_add_callback to append this struct to - * &drm_syncobj.cb_list - * @func: drm_syncobj_func_t to call - * - * This struct will be initialized by drm_syncobj_add_callback, additional - * data can be passed along by embedding drm_syncobj_cb in another struct. - * The callback will get called the next time drm_syncobj_replace_fence is - * called. - */ -struct drm_syncobj_cb { - struct list_head node; - drm_syncobj_func_t func; -}; - void drm_syncobj_free(struct kref *kref); /** -- cgit v1.2.3-71-gd317 From b5f06893c4992553a12c66ca094a09fb245d280e Mon Sep 17 00:00:00 2001 From: Shayenne da Luz Moura Date: Thu, 13 Dec 2018 19:29:57 -0200 Subject: drm: Rename crtc_idr as object_idr to KMS cleanups This patch solves this TODO task: drm_mode_config.crtc_idr is misnamed, since it contains all KMS object. Should be renamed to drm_mode_config.object_idr. Signed-off-by: Shayenne da Luz Moura [danvet: resolve conflict with addition of privobj_list.] Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20181213212957.vkitkyl5cj2qh7qr@smtp.gmail.com --- drivers/gpu/drm/drm_lease.c | 6 +++--- drivers/gpu/drm/drm_mode_config.c | 4 ++-- drivers/gpu/drm/drm_mode_object.c | 8 ++++---- include/drm/drm_mode_config.h | 6 +++--- 4 files changed, 12 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_lease.c b/drivers/gpu/drm/drm_lease.c index 3650d3c46718..d9b4d3ff06f6 100644 --- a/drivers/gpu/drm/drm_lease.c +++ b/drivers/gpu/drm/drm_lease.c @@ -218,7 +218,7 @@ static struct drm_master *drm_lease_create(struct drm_master *lessor, struct idr idr_for_each_entry(leases, entry, object) { error = 0; - if (!idr_find(&dev->mode_config.crtc_idr, object)) + if (!idr_find(&dev->mode_config.object_idr, object)) error = -ENOENT; else if (!_drm_lease_held_master(lessor, object)) error = -EACCES; @@ -439,7 +439,7 @@ static int fill_object_idr(struct drm_device *dev, /* * We're using an IDR to hold the set of leased * objects, but we don't need to point at the object's - * data structure from the lease as the main crtc_idr + * data structure from the lease as the main object_idr * will be used to actually find that. Instead, all we * really want is a 'leased/not-leased' result, for * which any non-NULL pointer will work fine. @@ -687,7 +687,7 @@ int drm_mode_get_lease_ioctl(struct drm_device *dev, if (lessee->lessor == NULL) /* owner can use all objects */ - object_idr = &lessee->dev->mode_config.crtc_idr; + object_idr = &lessee->dev->mode_config.object_idr; else /* lessee can only use allowed object */ object_idr = &lessee->leases; diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c index 931523c5bc9d..037e243ec863 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -382,7 +382,7 @@ void drm_mode_config_init(struct drm_device *dev) INIT_LIST_HEAD(&dev->mode_config.property_blob_list); INIT_LIST_HEAD(&dev->mode_config.plane_list); INIT_LIST_HEAD(&dev->mode_config.privobj_list); - idr_init(&dev->mode_config.crtc_idr); + idr_init(&dev->mode_config.object_idr); idr_init(&dev->mode_config.tile_idr); ida_init(&dev->mode_config.connector_ida); spin_lock_init(&dev->mode_config.connector_list_lock); @@ -485,7 +485,7 @@ void drm_mode_config_cleanup(struct drm_device *dev) ida_destroy(&dev->mode_config.connector_ida); idr_destroy(&dev->mode_config.tile_idr); - idr_destroy(&dev->mode_config.crtc_idr); + idr_destroy(&dev->mode_config.object_idr); drm_modeset_lock_fini(&dev->mode_config.connection_mutex); } EXPORT_SYMBOL(drm_mode_config_cleanup); diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c index cd9bc0ce9be0..bb1dd46496cd 100644 --- a/drivers/gpu/drm/drm_mode_object.c +++ b/drivers/gpu/drm/drm_mode_object.c @@ -38,7 +38,7 @@ int __drm_mode_object_add(struct drm_device *dev, struct drm_mode_object *obj, int ret; mutex_lock(&dev->mode_config.idr_mutex); - ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, + ret = idr_alloc(&dev->mode_config.object_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL); if (ret >= 0) { /* @@ -79,7 +79,7 @@ void drm_mode_object_register(struct drm_device *dev, struct drm_mode_object *obj) { mutex_lock(&dev->mode_config.idr_mutex); - idr_replace(&dev->mode_config.crtc_idr, obj, obj->id); + idr_replace(&dev->mode_config.object_idr, obj, obj->id); mutex_unlock(&dev->mode_config.idr_mutex); } @@ -99,7 +99,7 @@ void drm_mode_object_unregister(struct drm_device *dev, { mutex_lock(&dev->mode_config.idr_mutex); if (object->id) { - idr_remove(&dev->mode_config.crtc_idr, object->id); + idr_remove(&dev->mode_config.object_idr, object->id); object->id = 0; } mutex_unlock(&dev->mode_config.idr_mutex); @@ -131,7 +131,7 @@ struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev, struct drm_mode_object *obj = NULL; mutex_lock(&dev->mode_config.idr_mutex); - obj = idr_find(&dev->mode_config.crtc_idr, id); + obj = idr_find(&dev->mode_config.object_idr, id); if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type) obj = NULL; if (obj && obj->id != id) diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index d1e27836e0cd..88c536bd9a7b 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -391,18 +391,18 @@ struct drm_mode_config { /** * @idr_mutex: * - * Mutex for KMS ID allocation and management. Protects both @crtc_idr + * Mutex for KMS ID allocation and management. Protects both @object_idr * and @tile_idr. */ struct mutex idr_mutex; /** - * @crtc_idr: + * @object_idr: * * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc, * connector, modes - just makes life easier to have only one. */ - struct idr crtc_idr; + struct idr object_idr; /** * @tile_idr: -- cgit v1.2.3-71-gd317 From 56406e15b5e83256151ef74eb1a219cbf13d91c8 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Thu, 6 Dec 2018 15:24:36 +0100 Subject: drm/connector: Clarify the unit of TV margins All margins are expressed in pixels. Clarify that in the doc. Signed-off-by: Boris Brezillon Reviewed-by: Eric Anholt Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20181206142439.10441-3-boris.brezillon@bootlin.com --- include/drm/drm_connector.h | 2 +- include/drm/drm_mode_config.h | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 665b9cae7f43..9d28e8180cfd 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -394,7 +394,7 @@ int drm_display_info_set_bus_formats(struct drm_display_info *info, /** * struct drm_tv_connector_state - TV connector related states * @subconnector: selected subconnector - * @margins: margins + * @margins: margins (all margins are expressed in pixels) * @margins.left: left margin * @margins.right: right margin * @margins.top: top margin diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 88c536bd9a7b..2bbe91c561a1 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -683,22 +683,22 @@ struct drm_mode_config { struct drm_property *tv_mode_property; /** * @tv_left_margin_property: Optional TV property to set the left - * margin. + * margin (expressed in pixels). */ struct drm_property *tv_left_margin_property; /** * @tv_right_margin_property: Optional TV property to set the right - * margin. + * margin (expressed in pixels). */ struct drm_property *tv_right_margin_property; /** * @tv_top_margin_property: Optional TV property to set the right - * margin. + * margin (expressed in pixels). */ struct drm_property *tv_top_margin_property; /** * @tv_bottom_margin_property: Optional TV property to set the right - * margin. + * margin (expressed in pixels). */ struct drm_property *tv_bottom_margin_property; /** -- cgit v1.2.3-71-gd317 From 6c4f52dca36f5e3e2354c30591d38e92f4657ed9 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Thu, 6 Dec 2018 15:24:37 +0100 Subject: drm/connector: Allow creation of margin props alone TV margins properties can only be added as part of the SDTV TV connector properties creation, but we might need those props for HDMI TVs too, so let's move the margins props creation in a separate function and expose it to drivers. We also add an helper to attach margins props to a connector. Signed-off-by: Boris Brezillon Reviewed-by: Eric Anholt Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20181206142439.10441-4-boris.brezillon@bootlin.com --- drivers/gpu/drm/drm_connector.c | 83 ++++++++++++++++++++++++++++++++--------- include/drm/drm_connector.h | 2 + 2 files changed, 67 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 32946eff5488..66b2fd20369a 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -1137,6 +1137,70 @@ void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, } EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type); +/** + * drm_mode_attach_tv_margin_properties - attach TV connector margin properties + * @connector: DRM connector + * + * Called by a driver when it needs to attach TV margin props to a connector. + * Typically used on SDTV and HDMI connectors. + */ +void drm_connector_attach_tv_margin_properties(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + + drm_object_attach_property(&connector->base, + dev->mode_config.tv_left_margin_property, + 0); + drm_object_attach_property(&connector->base, + dev->mode_config.tv_right_margin_property, + 0); + drm_object_attach_property(&connector->base, + dev->mode_config.tv_top_margin_property, + 0); + drm_object_attach_property(&connector->base, + dev->mode_config.tv_bottom_margin_property, + 0); +} +EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties); + +/** + * drm_mode_create_tv_margin_properties - create TV connector margin properties + * @dev: DRM device + * + * Called by a driver's HDMI connector initialization routine, this function + * creates the TV margin properties for a given device. No need to call this + * function for an SDTV connector, it's already called from + * drm_mode_create_tv_properties(). + */ +int drm_mode_create_tv_margin_properties(struct drm_device *dev) +{ + if (dev->mode_config.tv_left_margin_property) + return 0; + + dev->mode_config.tv_left_margin_property = + drm_property_create_range(dev, 0, "left margin", 0, 100); + if (!dev->mode_config.tv_left_margin_property) + return -ENOMEM; + + dev->mode_config.tv_right_margin_property = + drm_property_create_range(dev, 0, "right margin", 0, 100); + if (!dev->mode_config.tv_right_margin_property) + return -ENOMEM; + + dev->mode_config.tv_top_margin_property = + drm_property_create_range(dev, 0, "top margin", 0, 100); + if (!dev->mode_config.tv_top_margin_property) + return -ENOMEM; + + dev->mode_config.tv_bottom_margin_property = + drm_property_create_range(dev, 0, "bottom margin", 0, 100); + if (!dev->mode_config.tv_bottom_margin_property) + return -ENOMEM; + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_tv_margin_properties); + /** * drm_mode_create_tv_properties - create TV specific connector properties * @dev: DRM device @@ -1183,24 +1247,7 @@ int drm_mode_create_tv_properties(struct drm_device *dev, /* * Other, TV specific properties: margins & TV modes. */ - dev->mode_config.tv_left_margin_property = - drm_property_create_range(dev, 0, "left margin", 0, 100); - if (!dev->mode_config.tv_left_margin_property) - goto nomem; - - dev->mode_config.tv_right_margin_property = - drm_property_create_range(dev, 0, "right margin", 0, 100); - if (!dev->mode_config.tv_right_margin_property) - goto nomem; - - dev->mode_config.tv_top_margin_property = - drm_property_create_range(dev, 0, "top margin", 0, 100); - if (!dev->mode_config.tv_top_margin_property) - goto nomem; - - dev->mode_config.tv_bottom_margin_property = - drm_property_create_range(dev, 0, "bottom margin", 0, 100); - if (!dev->mode_config.tv_bottom_margin_property) + if (drm_mode_create_tv_margin_properties(dev)) goto nomem; dev->mode_config.tv_mode_property = diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 9d28e8180cfd..594f8d33a61f 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1238,9 +1238,11 @@ const char *drm_get_tv_select_name(int val); const char *drm_get_content_protection_name(int val); int drm_mode_create_dvi_i_properties(struct drm_device *dev); +int drm_mode_create_tv_margin_properties(struct drm_device *dev); int drm_mode_create_tv_properties(struct drm_device *dev, unsigned int num_modes, const char * const modes[]); +void drm_connector_attach_tv_margin_properties(struct drm_connector *conn); int drm_mode_create_scaling_mode_property(struct drm_device *dev); int drm_connector_attach_content_type_property(struct drm_connector *dev); int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, -- cgit v1.2.3-71-gd317 From ecb2e2fd5a442e8639b9648df54b77a32ca4c906 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Wed, 26 Dec 2018 22:03:47 +0100 Subject: drm: move DRM_IF_VERSION to drm_internal.h Move DRM_IF_VERSION out of drmP.h to allow users to get rid of the drmP include. Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20181226210353.13993-1-sam@ravnborg.org --- drivers/gpu/drm/drm_internal.h | 2 ++ include/drm/drmP.h | 2 -- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h index c7a7d7ce5d1c..331112b2ae88 100644 --- a/drivers/gpu/drm/drm_internal.h +++ b/drivers/gpu/drm/drm_internal.h @@ -26,6 +26,8 @@ #define DRM_IF_MAJOR 1 #define DRM_IF_MINOR 4 +#define DRM_IF_VERSION(maj, min) (maj << 16 | min) + struct drm_prime_file_private; struct dma_buf; diff --git a/include/drm/drmP.h b/include/drm/drmP.h index bdb0d5548f39..db94ef00940e 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -94,8 +94,6 @@ struct dma_buf_attachment; struct pci_dev; struct pci_controller; -#define DRM_IF_VERSION(maj, min) (maj << 16 | min) - #define DRM_SWITCH_POWER_ON 0 #define DRM_SWITCH_POWER_OFF 1 #define DRM_SWITCH_POWER_CHANGING 2 -- cgit v1.2.3-71-gd317 From c76426883c8f44bc7d2aee123e28867c67b87384 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 28 Dec 2018 15:04:46 +0200 Subject: drm: un-inline drm_legacy_findmap() Un-inline drm_legacy_findmap() to not depend on struct drm_device definition within drm_legacy.h, so that a forward declaration suffices. Also include drm_hashtab.h in drm_legacy.h to make it more self-contained. Make it easier to drop drmP.h includes. v2: avoid including drm_device.h by un-inlining (Daniel) [Updated commit message per Laurent's review while applying.] Cc: Sam Ravnborg Cc: Daniel Vetter Cc: Laurent Pinchart Reviewed-by: Daniel Vetter Reviewed-by: Laurent Pinchart Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20181228130446.22141-1-jani.nikula@intel.com --- drivers/gpu/drm/drm_bufs.c | 11 +++++++++++ include/drm/drm_legacy.h | 14 ++++---------- 2 files changed, 15 insertions(+), 10 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c index d7d10cabb9bb..a39ab2193bfe 100644 --- a/drivers/gpu/drm/drm_bufs.c +++ b/drivers/gpu/drm/drm_bufs.c @@ -377,6 +377,17 @@ int drm_legacy_addmap(struct drm_device *dev, resource_size_t offset, } EXPORT_SYMBOL(drm_legacy_addmap); +struct drm_local_map *drm_legacy_findmap(struct drm_device *dev, + unsigned int token) +{ + struct drm_map_list *_entry; + list_for_each_entry(_entry, &dev->maplist, head) + if (_entry->user_token == token) + return _entry->map; + return NULL; +} +EXPORT_SYMBOL(drm_legacy_findmap); + /** * Ioctl to specify a range of memory that is available for mapping by a * non-root process. diff --git a/include/drm/drm_legacy.h b/include/drm/drm_legacy.h index 8fad66f88e4f..3e99ab69c122 100644 --- a/include/drm/drm_legacy.h +++ b/include/drm/drm_legacy.h @@ -2,6 +2,9 @@ #define __DRM_DRM_LEGACY_H__ #include +#include + +struct drm_device; /* * Legacy driver interfaces for the Direct Rendering Manager @@ -156,6 +159,7 @@ struct drm_map_list { int drm_legacy_addmap(struct drm_device *d, resource_size_t offset, unsigned int size, enum drm_map_type type, enum drm_map_flags flags, struct drm_local_map **map_p); +struct drm_local_map *drm_legacy_findmap(struct drm_device *dev, unsigned int token); void drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map); int drm_legacy_rmmap_locked(struct drm_device *d, struct drm_local_map *map); void drm_legacy_master_rmmaps(struct drm_device *dev, @@ -194,14 +198,4 @@ void drm_legacy_ioremap(struct drm_local_map *map, struct drm_device *dev); void drm_legacy_ioremap_wc(struct drm_local_map *map, struct drm_device *dev); void drm_legacy_ioremapfree(struct drm_local_map *map, struct drm_device *dev); -static inline struct drm_local_map *drm_legacy_findmap(struct drm_device *dev, - unsigned int token) -{ - struct drm_map_list *_entry; - list_for_each_entry(_entry, &dev->maplist, head) - if (_entry->user_token == token) - return _entry->map; - return NULL; -} - #endif /* __DRM_DRM_LEGACY_H__ */ -- cgit v1.2.3-71-gd317 From 5c27b9fafeadc919fd58a3b4fbd718a1cb7b1b1a Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 27 Dec 2018 14:56:37 +0200 Subject: drm: include kernel.h and agp_backend.h from intel-gtt.h intel-gtt.h uses kernel and agp pointers, make it self-contained by including the relevant headers. This prepares for dropping drmP.h from files including intel-gtt.h. [Updated commit message per Laurent's review while applying.] Cc: Sam Ravnborg Cc: Daniel Vetter Cc: Laurent Pinchart Reviewed-by: Daniel Vetter Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/9414800f89d6f326c6e9173233bf6c4dee254d9a.1545915059.git.jani.nikula@intel.com --- include/drm/intel-gtt.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/drm/intel-gtt.h b/include/drm/intel-gtt.h index 2324c84a25c0..71d81923e6b0 100644 --- a/include/drm/intel-gtt.h +++ b/include/drm/intel-gtt.h @@ -4,6 +4,9 @@ #ifndef _DRM_INTEL_GTT_H #define _DRM_INTEL_GTT_H +#include +#include + void intel_gtt_get(u64 *gtt_total, phys_addr_t *mappable_base, resource_size_t *mappable_end); -- cgit v1.2.3-71-gd317 From 39e23674809b0fab008e32c268d7c5ef4a019c8b Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 27 Dec 2018 14:56:38 +0200 Subject: drm: include idr.h from drm_file.h drm_file.h embeds idr structures in DRM-specific structures. Include the corresponding header to make drm_file.h self-contained. Make it easier to drop drmP.h includes. [Updated commit message per Laurent's review while applying.] Cc: Sam Ravnborg Cc: Daniel Vetter Cc: Laurent Pinchart Reviewed-by: Daniel Vetter Reviewed-by: Laurent Pinchart Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/2818b15332ab562722dfc324cf977b7eb4a04401.1545915059.git.jani.nikula@intel.com --- include/drm/drm_file.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h index 84ac79219e4c..6710b612e2f6 100644 --- a/include/drm/drm_file.h +++ b/include/drm/drm_file.h @@ -32,6 +32,7 @@ #include #include +#include #include -- cgit v1.2.3-71-gd317 From f7e271de230b20ea3f9cecf71c45ca23c58aa055 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 27 Dec 2018 14:56:39 +0200 Subject: drm: include types.h from drm_hdcp.h drm_hdcp.h uses kernel integer types, make it self-contained by including linux/kernel.h. This prepares for dropping drmP.h from files including drm_hdcp.h. [Updated commit message per Laurent's review while applying.] Cc: Sam Ravnborg Cc: Daniel Vetter Cc: Laurent Pinchart Reviewed-by: Daniel Vetter Reviewed-by: Laurent Pinchart Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/adfc79941e827b49eb6186f317cbeff0fb365f33.1545915059.git.jani.nikula@intel.com --- include/drm/drm_hdcp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index a6de09c5e47f..d6dfef8cff6a 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -9,6 +9,8 @@ #ifndef _DRM_HDCP_H_INCLUDED_ #define _DRM_HDCP_H_INCLUDED_ +#include + /* Period of hdcp checks (to ensure we're still authenticated) */ #define DRM_HDCP_CHECK_PERIOD_MS (128 * 16) -- cgit v1.2.3-71-gd317 From dd7ece7f6e220e4d1a2a8ba4c42622d7d73e6376 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 28 Dec 2018 10:28:15 +0200 Subject: drm: forward declare struct drm_file in drm_syncobj.h drm_syncobj.h uses struct drm_file pointers, forward declare struct drm_file to make the header self-contained. This prepares for dropping drmP.h from files including drm_syncobj.h. Switch from "" to <> includes while at it. v2: forward declare instead of including drm_file.h (Daniel) [Updated commit message per Laurent's review while applying.] Cc: Sam Ravnborg Cc: Daniel Vetter Cc: Laurent Pinchart Reviewed-by: Daniel Vetter Reviewed-by: Laurent Pinchart Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20181228082815.10797-1-jani.nikula@intel.com --- include/drm/drm_syncobj.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h index 29244cbcd05e..ef5721512632 100644 --- a/include/drm/drm_syncobj.h +++ b/include/drm/drm_syncobj.h @@ -26,7 +26,9 @@ #ifndef __DRM_SYNCOBJ_H__ #define __DRM_SYNCOBJ_H__ -#include "linux/dma-fence.h" +#include + +struct drm_file; struct drm_syncobj_cb; -- cgit v1.2.3-71-gd317 From 7b5618f4b834330a052958db934c3dffad4a15c2 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 7 Jan 2019 12:15:53 +0100 Subject: ACPI / PMIC: Add support for executing PMIC MIPI sequence elements DSI LCD panels describe an initialization sequence in the Video BIOS Tables using so called MIPI sequences. One possible element in these sequences is a PMIC specific element of 15 bytes. Although this is not really an ACPI opregion, the ACPI opregion code is the closest thing we have. We need to have support for these PMIC specific MIPI sequence elements somwhere. Since we already instantiate a special platform device for Intel PMICs for the ACPI PMIC OpRegion handler to bind to, with PMIC specific implementations of the OpRegion, the handling of MIPI sequence PMIC elements fits very well in the ACPI PMIC OpRegion code. This commit adds a new intel_soc_pmic_exec_mipi_pmic_seq_element() function, which is to be backed by a PMIC specific exec_mipi_pmic_seq_element callback. This function will be called by the i915 code to execture MIPI sequence PMIC elements. Reviewed-by: Mika Westerberg Signed-off-by: Hans de Goede Link: https://patchwork.freedesktop.org/patch/msgid/20190107111556.4510-2-hdegoede@redhat.com --- drivers/acpi/pmic/intel_pmic.c | 52 ++++++++++++++++++++++++++++++++++++++ drivers/acpi/pmic/intel_pmic.h | 2 ++ include/linux/mfd/intel_soc_pmic.h | 3 +++ 3 files changed, 57 insertions(+) (limited to 'include') diff --git a/drivers/acpi/pmic/intel_pmic.c b/drivers/acpi/pmic/intel_pmic.c index ca18e0d23df9..471afeea87c2 100644 --- a/drivers/acpi/pmic/intel_pmic.c +++ b/drivers/acpi/pmic/intel_pmic.c @@ -15,6 +15,7 @@ #include #include +#include #include #include #include "intel_pmic.h" @@ -36,6 +37,8 @@ struct intel_pmic_opregion { struct intel_pmic_regs_handler_ctx ctx; }; +static struct intel_pmic_opregion *intel_pmic_opregion; + static int pmic_get_reg_bit(int address, struct pmic_table *table, int count, int *reg, int *bit) { @@ -304,6 +307,7 @@ int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle, } opregion->data = d; + intel_pmic_opregion = opregion; return 0; out_remove_thermal_handler: @@ -319,3 +323,51 @@ out_error: return ret; } EXPORT_SYMBOL_GPL(intel_pmic_install_opregion_handler); + +/** + * intel_soc_pmic_exec_mipi_pmic_seq_element - Execute PMIC MIPI sequence + * @i2c_address: I2C client address for the PMIC + * @reg_address: PMIC register address + * @value: New value for the register bits to change + * @mask: Mask indicating which register bits to change + * + * DSI LCD panels describe an initialization sequence in the i915 VBT (Video + * BIOS Tables) using so called MIPI sequences. One possible element in these + * sequences is a PMIC specific element of 15 bytes. + * + * This function executes these PMIC specific elements sending the embedded + * commands to the PMIC. + * + * Return 0 on success, < 0 on failure. + */ +int intel_soc_pmic_exec_mipi_pmic_seq_element(u16 i2c_address, u32 reg_address, + u32 value, u32 mask) +{ + struct intel_pmic_opregion_data *d; + int ret; + + if (!intel_pmic_opregion) { + pr_warn("%s: No PMIC registered\n", __func__); + return -ENXIO; + } + + d = intel_pmic_opregion->data; + + mutex_lock(&intel_pmic_opregion->lock); + + if (d->exec_mipi_pmic_seq_element) { + ret = d->exec_mipi_pmic_seq_element(intel_pmic_opregion->regmap, + i2c_address, reg_address, + value, mask); + } else { + pr_warn("%s: Not implemented\n", __func__); + pr_warn("%s: i2c-addr: 0x%x reg-addr 0x%x value 0x%x mask 0x%x\n", + __func__, i2c_address, reg_address, value, mask); + ret = -EOPNOTSUPP; + } + + mutex_unlock(&intel_pmic_opregion->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(intel_soc_pmic_exec_mipi_pmic_seq_element); diff --git a/drivers/acpi/pmic/intel_pmic.h b/drivers/acpi/pmic/intel_pmic.h index 095afc96952e..5cd195fabca8 100644 --- a/drivers/acpi/pmic/intel_pmic.h +++ b/drivers/acpi/pmic/intel_pmic.h @@ -15,6 +15,8 @@ struct intel_pmic_opregion_data { int (*update_aux)(struct regmap *r, int reg, int raw_temp); int (*get_policy)(struct regmap *r, int reg, int bit, u64 *value); int (*update_policy)(struct regmap *r, int reg, int bit, int enable); + int (*exec_mipi_pmic_seq_element)(struct regmap *r, u16 i2c_address, + u32 reg_address, u32 value, u32 mask); struct pmic_table *power_table; int power_table_count; struct pmic_table *thermal_table; diff --git a/include/linux/mfd/intel_soc_pmic.h b/include/linux/mfd/intel_soc_pmic.h index ed1dfba5e5f9..bfecd6bd4990 100644 --- a/include/linux/mfd/intel_soc_pmic.h +++ b/include/linux/mfd/intel_soc_pmic.h @@ -26,4 +26,7 @@ struct intel_soc_pmic { struct device *dev; }; +int intel_soc_pmic_exec_mipi_pmic_seq_element(u16 i2c_address, u32 reg_address, + u32 value, u32 mask); + #endif /* __INTEL_SOC_PMIC_H__ */ -- cgit v1.2.3-71-gd317 From ac4f24c213b81ce668574cebaf3e1b2bc92fcff6 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 8 Jan 2019 20:29:28 +0100 Subject: drm: drm_device.h: update comments to kernel-doc style Updated comment style to kernel-doc format in drm_device.h In struct drm_device there are 12 struct members without doc: - registered - filelist_mutex - filelist - irq - vbl_lock - event_lock - hose - sigdata - sigdata.context - sigdata.lock - agp_buffer_map - agp_buffer_token They all need proper documentation, a task left for someone that knows their usage. drm_device is not plugged into Documentation/gpu/drm-internals.rst as this would create a new load of warnings. Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Cc: Jonathan Corbet Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-2-sam@ravnborg.org --- include/drm/drm_device.h | 199 +++++++++++++++++++++++++++++++---------------- 1 file changed, 134 insertions(+), 65 deletions(-) (limited to 'include') diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index 42411b3ea0c8..2b154ead9efc 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -25,24 +25,48 @@ struct pci_dev; struct pci_controller; /** - * DRM device structure. This structure represent a complete card that + * struct drm_device - DRM device structure + * + * This structure represent a complete card that * may contain multiple heads. */ struct drm_device { - struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */ - int if_version; /**< Highest interface version set */ - - /** \name Lifetime Management */ - /*@{ */ - struct kref ref; /**< Object ref-count */ - struct device *dev; /**< Device structure of bus-device */ - struct drm_driver *driver; /**< DRM driver managing the device */ - void *dev_private; /**< DRM driver private data */ - struct drm_minor *primary; /**< Primary node */ - struct drm_minor *render; /**< Render node */ + /** + * @legacy_dev_list: + * + * List of devices per driver for stealth attach cleanup + */ + struct list_head legacy_dev_list; + + /** @if_version: Highest interface version set */ + int if_version; + + /** @ref: Object ref-count */ + struct kref ref; + + /** @dev: Device structure of bus-device */ + struct device *dev; + + /** @driver: DRM driver managing the device */ + struct drm_driver *driver; + + /** @dev_private: DRM driver private data */ + void *dev_private; + + /** @primary: Primary node */ + struct drm_minor *primary; + + /** @render: Render node */ + struct drm_minor *render; + bool registered; - /* currently active master for this device. Protected by master_mutex */ + /** + * @master: + * + * Currently active master for this device. + * Protected by &master_mutex + */ struct drm_master *master; /** @@ -63,23 +87,42 @@ struct drm_device { */ bool unplugged; - struct inode *anon_inode; /**< inode for private address-space */ - char *unique; /**< unique name of the device */ - /*@} */ + /** @anon_inode: inode for private address-space */ + struct inode *anon_inode; + + /** @unique: Unique name of the device */ + char *unique; + + /** + * @struct_mutex: + * + * Lock for others (not &drm_minor.master and &drm_file.is_master) + */ + struct mutex struct_mutex; + + /** + * @master_mutex: + * + * Lock for &drm_minor.master and &drm_file.is_master + */ + struct mutex master_mutex; + + /** + * @open_count: + * + * Usage counter for outstanding files open, + * protected by drm_global_mutex + */ + int open_count; + + /** @buf_lock: Lock for &buf_use and a few other things. */ + spinlock_t buf_lock; - /** \name Locks */ - /*@{ */ - struct mutex struct_mutex; /**< For others */ - struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */ - /*@} */ + /** @buf_use: Usage counter for buffers in use -- cannot alloc */ + int buf_use; - /** \name Usage Counters */ - /*@{ */ - int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ - spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */ - int buf_use; /**< Buffers in use -- cannot alloc */ - atomic_t buf_alloc; /**< Buffer allocation in progress */ - /*@} */ + /** @buf_alloc: Buffer allocation in progress */ + atomic_t buf_alloc; struct mutex filelist_mutex; struct list_head filelist; @@ -87,51 +130,64 @@ struct drm_device { /** * @filelist_internal: * - * List of open DRM files for in-kernel clients. Protected by @filelist_mutex. + * List of open DRM files for in-kernel clients. + * Protected by &filelist_mutex. */ struct list_head filelist_internal; /** * @clientlist_mutex: * - * Protects @clientlist access. + * Protects &clientlist access. */ struct mutex clientlist_mutex; /** * @clientlist: * - * List of in-kernel clients. Protected by @clientlist_mutex. + * List of in-kernel clients. Protected by &clientlist_mutex. */ struct list_head clientlist; - /** \name Memory management */ - /*@{ */ - struct list_head maplist; /**< Linked list of regions */ - struct drm_open_hash map_hash; /**< User token hash table for maps */ + /** @maplist: Memory management - linked list of regions */ + struct list_head maplist; - /** \name Context handle management */ - /*@{ */ - struct list_head ctxlist; /**< Linked list of context handles */ - struct mutex ctxlist_mutex; /**< For ctxlist */ + /** @map_hash: Memory management - user token hash table for maps */ + struct drm_open_hash map_hash; - struct idr ctx_idr; + /** + * @ctxlist: + * Context handle management - linked list of context handles + */ + struct list_head ctxlist; - struct list_head vmalist; /**< List of vmas (for debugging) */ + /** + * @ctxlist_mutex: + * + * Context handle management - mutex for &ctxlist + */ + struct mutex ctxlist_mutex; - /*@} */ + /** + * @ctx_idr: + * Context handle management + */ + struct idr ctx_idr; - /** \name DMA support */ - /*@{ */ - struct drm_device_dma *dma; /**< Optional pointer for DMA support */ - /*@} */ + /** + * @vmalist: + * Context handle management - list of vmas (for debugging) + */ + struct list_head vmalist; + + /** @dma: Optional pointer for DMA support */ + struct drm_device_dma *dma; - /** \name Context support */ - /*@{ */ + /** @context_flag: Context swapping flag */ + __volatile__ long context_flag; - __volatile__ long context_flag; /**< Context swapping flag */ - int last_context; /**< Last current context */ - /*@} */ + /** @last_context: Last current context */ + int last_context; /** * @irq_enabled: @@ -168,7 +224,12 @@ struct drm_device { */ struct drm_vblank_crtc *vblank; - spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ + /** + * @vblank_time_lock: + * + * Protects vblank count and time updates during vblank enable/disable + */ + spinlock_t vblank_time_lock; spinlock_t vbl_lock; /** @@ -186,25 +247,29 @@ struct drm_device { * * If non-zeor, &drm_crtc_funcs.get_vblank_counter must be set. */ - u32 max_vblank_count; /**< size of vblank counter register */ - /** - * List of events - */ + /** @max_vblank_count: Size of vblank counter register */ + u32 max_vblank_count; + + /** @vblank_event_list: List of vblank events */ struct list_head vblank_event_list; spinlock_t event_lock; - /*@} */ + /** @agp: AGP data */ + struct drm_agp_head *agp; - struct drm_agp_head *agp; /**< AGP data */ + /** @pdev: PCI device structure */ + struct pci_dev *pdev; - struct pci_dev *pdev; /**< PCI device structure */ #ifdef __alpha__ struct pci_controller *hose; #endif - struct drm_sg_mem *sg; /**< Scatter gather memory */ - unsigned int num_crtcs; /**< Number of CRTCs on this device */ + /** @sg: Scatter gather memory */ + struct drm_sg_mem *sg; + + /** @num_crtcs: Number of CRTCs on this device */ + unsigned int num_crtcs; struct { int context; @@ -214,14 +279,18 @@ struct drm_device { struct drm_local_map *agp_buffer_map; unsigned int agp_buffer_token; - struct drm_mode_config mode_config; /**< Current mode config */ + /** @mode_config: Current mode config */ + struct drm_mode_config mode_config; - /** \name GEM information */ - /*@{ */ + /** @object_name_lock: GEM information */ struct mutex object_name_lock; + + /** @object_name_idr: GEM information */ struct idr object_name_idr; + + /** @vma_offset_manager: GEM information */ struct drm_vma_offset_manager *vma_offset_manager; - /*@} */ + int switch_power_state; /** -- cgit v1.2.3-71-gd317 From 7af78f406119366fb15a15823f720ebf06bb5652 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 8 Jan 2019 20:29:29 +0100 Subject: drm: move DRM_SWITCH_POWER defines to drm_device.h Move DRM_SWITCH_POWER out of drmP.h to allow users to get rid of the drmP include. Moved to drm_device.h because drm_device.switch_power_state is the only user. Converted to enum and added sparse kerneldoc comments. Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-3-sam@ravnborg.org --- include/drm/drmP.h | 5 ----- include/drm/drm_device.h | 29 ++++++++++++++++++++++++++++- 2 files changed, 28 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/drm/drmP.h b/include/drm/drmP.h index db94ef00940e..9e47c8dc6b87 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -94,11 +94,6 @@ struct dma_buf_attachment; struct pci_dev; struct pci_controller; -#define DRM_SWITCH_POWER_ON 0 -#define DRM_SWITCH_POWER_OFF 1 -#define DRM_SWITCH_POWER_CHANGING 2 -#define DRM_SWITCH_POWER_DYNAMIC_OFF 3 - /* returns true if currently okay to sleep */ static inline bool drm_can_sleep(void) { diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index 2b154ead9efc..d7cedbac66a3 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -24,6 +24,25 @@ struct inode; struct pci_dev; struct pci_controller; + +/** + * enum drm_switch_power - power state of drm device + */ + +enum switch_power_state { + /** @DRM_SWITCH_POWER_ON: Power state is ON */ + DRM_SWITCH_POWER_ON = 0, + + /** @DRM_SWITCH_POWER_OFF: Power state is OFF */ + DRM_SWITCH_POWER_OFF = 1, + + /** @DRM_SWITCH_POWER_CHANGING: Power state is changing */ + DRM_SWITCH_POWER_CHANGING = 2, + + /** @DRM_SWITCH_POWER_DYNAMIC_OFF: Suspended */ + DRM_SWITCH_POWER_DYNAMIC_OFF = 3, +}; + /** * struct drm_device - DRM device structure * @@ -291,7 +310,15 @@ struct drm_device { /** @vma_offset_manager: GEM information */ struct drm_vma_offset_manager *vma_offset_manager; - int switch_power_state; + /** + * @switch_power_state: + * + * Power state of the client. + * Used by drivers supporting the switcheroo driver. + * The state is maintained in the + * &vga_switcheroo_client_ops.set_gpu_state callback + */ + enum switch_power_state switch_power_state; /** * @fb_helper: -- cgit v1.2.3-71-gd317 From 2513147dce2353eb6d1a947ab543e3758724362d Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 8 Jan 2019 20:29:30 +0100 Subject: drm: make drm_framebuffer.h self contained MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add forward declaration and pull in include file to make drm_framebuffer.h self contained. While add it order include files alphabetically. The use of TASK_COMM_LEN is the reason for including sched.h. I could not see any good way to avoid this dependency, and users of drm_framebuffer.comm already use TASK_COMM_LEN to check for length etc. v2: - Added forward declaration of drm_gem_object (Noralf) - Added ack from Noralf Signed-off-by: Sam Ravnborg Acked-by: Noralf Trønnes Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-4-sam@ravnborg.org --- include/drm/drm_framebuffer.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/drm/drm_framebuffer.h b/include/drm/drm_framebuffer.h index c94acedfb08e..f0b34c977ec5 100644 --- a/include/drm/drm_framebuffer.h +++ b/include/drm/drm_framebuffer.h @@ -23,13 +23,17 @@ #ifndef __DRM_FRAMEBUFFER_H__ #define __DRM_FRAMEBUFFER_H__ -#include #include +#include +#include + #include -struct drm_framebuffer; -struct drm_file; +struct drm_clip_rect; struct drm_device; +struct drm_file; +struct drm_framebuffer; +struct drm_gem_object; /** * struct drm_framebuffer_funcs - framebuffer hooks -- cgit v1.2.3-71-gd317 From 428747ae5cca2ca13983b768513f13cb8896de04 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 8 Jan 2019 20:29:33 +0100 Subject: drm: remove include of drmP.h from bridge/dw_hdmi.h drmP.h is an relic from the days when there was a single header file. To enable the removal of drmP.h from all users drop include of drmP.h from bridge/dw_hdmi.h. A few files relied on the file included in drmP.h - add explicit include statements or forward declarations to these files. Build tested with arm and x86. v2: - prefer forward declarations when possible (Laurent Pinchart) - sort include files (Laurent Pinchart) Signed-off-by: Sam Ravnborg Reviewed-by: Laurent Pinchart Cc: Archit Taneja Cc: Andrzej Hajda Cc: David Airlie Cc: Daniel Vetter Cc: Kieran Bingham Cc: Fabio Estevam Cc: Neil Armstrong Cc: Maxime Ripard Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-7-sam@ravnborg.org --- drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 4 ++++ drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c | 1 + include/drm/bridge/dw_hdmi.h | 6 ++++-- 3 files changed, 9 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index 2228689d9a5e..5cbb71a866d5 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -5,6 +5,10 @@ * Copyright (c) 2017 Renesas Solutions Corp. * Kuninori Morimoto */ + +#include +#include + #include #include diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c index 75490a3e0a2a..790d499daa10 100644 --- a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c +++ b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c @@ -7,6 +7,7 @@ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) */ +#include #include #include diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index 9c56412bb2cf..9f93895dde88 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -10,9 +10,11 @@ #ifndef __DW_HDMI__ #define __DW_HDMI__ -#include - +struct drm_connector; +struct drm_display_mode; +struct drm_encoder; struct dw_hdmi; +struct platform_device; /** * DOC: Supported input formats and encodings -- cgit v1.2.3-71-gd317 From 19126bdf962c2819ed9482ed12d6bd9c37b89b87 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 8 Jan 2019 20:29:34 +0100 Subject: drm: remove include of drmP.h from drm_encoder_slave.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit No further changes required. Signed-off-by: Sam Ravnborg Acked-by: Noralf Trønnes Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-8-sam@ravnborg.org --- include/drm/drm_encoder_slave.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/drm/drm_encoder_slave.h b/include/drm/drm_encoder_slave.h index 1107b4b1c599..a09864f6d684 100644 --- a/include/drm/drm_encoder_slave.h +++ b/include/drm/drm_encoder_slave.h @@ -27,7 +27,6 @@ #ifndef __DRM_ENCODER_SLAVE_H__ #define __DRM_ENCODER_SLAVE_H__ -#include #include #include -- cgit v1.2.3-71-gd317 From 785cabaae94e23954d0cb93aad1ac1214606be7d Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 8 Jan 2019 20:29:39 +0100 Subject: drm: remove drmP.h from drm_gem_cma_helper.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With all dependencies fixed we can now remove drmP.h from drm_gem_cma_helper.h. It is replaced by the include files required, or forward declarations as appropritate. Signed-off-by: Sam Ravnborg Acked-by: Noralf Trønnes Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-13-sam@ravnborg.org --- include/drm/drm_gem_cma_helper.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h index 07c504940ba1..947ac95eb24a 100644 --- a/include/drm/drm_gem_cma_helper.h +++ b/include/drm/drm_gem_cma_helper.h @@ -2,9 +2,12 @@ #ifndef __DRM_GEM_CMA_HELPER_H__ #define __DRM_GEM_CMA_HELPER_H__ -#include +#include +#include #include +struct drm_mode_create_dumb; + /** * struct drm_gem_cma_object - GEM object backed by CMA memory allocations * @base: base GEM object -- cgit v1.2.3-71-gd317 From 13d0add333afea7b2fef77473232b10dea3627dd Mon Sep 17 00:00:00 2001 From: Ville Syrjälä Date: Tue, 8 Jan 2019 19:28:25 +0200 Subject: drm/edid: Pass connector to AVI infoframe functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make life easier for drivers by simply passing the connector to drm_hdmi_avi_infoframe_from_display_mode() and drm_hdmi_avi_infoframe_quant_range(). That way drivers don't need to worry about is_hdmi2_sink mess. v2: Make is_hdmi2_sink() return true for sil-sii8620 Adapt to omap/vc4 changes Cc: Alex Deucher Cc: "Christian König" Cc: "David (ChunMing) Zhou" Cc: Archit Taneja Cc: Andrzej Hajda Cc: Laurent Pinchart Cc: Inki Dae Cc: Joonyoung Shim Cc: Seung-Woo Kim Cc: Kyungmin Park Cc: Russell King Cc: CK Hu Cc: Philipp Zabel Cc: Rob Clark Cc: Ben Skeggs Cc: Tomi Valkeinen Cc: Sandy Huang Cc: "Heiko Stübner" Cc: Benjamin Gaignard Cc: Vincent Abriou Cc: Thierry Reding Cc: Eric Anholt Cc: Shawn Guo Cc: Ilia Mirkin Cc: amd-gfx@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: linux-tegra@vger.kernel.org Signed-off-by: Ville Syrjälä Acked-by: Thierry Reding Acked-by: Russell King Reviewed-by: Laurent Pinchart Reviewed-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20190108172828.15184-1-ville.syrjala@linux.intel.com --- drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 2 +- drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 2 +- drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 3 ++- drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 2 +- drivers/gpu/drm/bridge/analogix-anx78xx.c | 5 +++-- drivers/gpu/drm/bridge/sii902x.c | 3 ++- drivers/gpu/drm/bridge/sil-sii8620.c | 3 +-- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 3 ++- drivers/gpu/drm/drm_edid.c | 33 ++++++++++++++++++++----------- drivers/gpu/drm/exynos/exynos_hdmi.c | 3 ++- drivers/gpu/drm/i2c/tda998x_drv.c | 3 ++- drivers/gpu/drm/i915/intel_hdmi.c | 14 ++++++------- drivers/gpu/drm/i915/intel_lspcon.c | 15 +++++++------- drivers/gpu/drm/i915/intel_sdvo.c | 10 ++++++---- drivers/gpu/drm/mediatek/mtk_hdmi.c | 3 ++- drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 3 ++- drivers/gpu/drm/nouveau/dispnv50/disp.c | 7 +++---- drivers/gpu/drm/omapdrm/omap_encoder.c | 4 ++-- drivers/gpu/drm/radeon/radeon_audio.c | 2 +- drivers/gpu/drm/rockchip/inno_hdmi.c | 4 +++- drivers/gpu/drm/sti/sti_hdmi.c | 3 ++- drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 3 ++- drivers/gpu/drm/tegra/hdmi.c | 3 ++- drivers/gpu/drm/tegra/sor.c | 3 ++- drivers/gpu/drm/vc4/vc4_hdmi.c | 9 +++++---- drivers/gpu/drm/zte/zx_hdmi.c | 4 +++- include/drm/drm_edid.h | 8 ++++---- 27 files changed, 91 insertions(+), 66 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c index 4cfecdce29a3..1f0426d2fc2a 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c @@ -1682,7 +1682,7 @@ static void dce_v10_0_afmt_setmode(struct drm_encoder *encoder, dce_v10_0_audio_write_sad_regs(encoder); dce_v10_0_audio_write_latency_fields(encoder, mode); - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode); if (err < 0) { DRM_ERROR("failed to setup AVI infoframe: %zd\n", err); return; diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c index 7c868916d90f..2280b971d758 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c @@ -1724,7 +1724,7 @@ static void dce_v11_0_afmt_setmode(struct drm_encoder *encoder, dce_v11_0_audio_write_sad_regs(encoder); dce_v11_0_audio_write_latency_fields(encoder, mode); - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode); if (err < 0) { DRM_ERROR("failed to setup AVI infoframe: %zd\n", err); return; diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c index 17eaaba36017..db443ec53d3a 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c @@ -1423,6 +1423,7 @@ static void dce_v6_0_audio_set_avi_infoframe(struct drm_encoder *encoder, struct amdgpu_device *adev = dev->dev_private; struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder); struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv; + struct drm_connector *connector = amdgpu_get_connector_for_encoder(encoder); struct hdmi_avi_infoframe frame; u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE]; uint8_t *payload = buffer + 3; @@ -1430,7 +1431,7 @@ static void dce_v6_0_audio_set_avi_infoframe(struct drm_encoder *encoder, ssize_t err; u32 tmp; - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode); if (err < 0) { DRM_ERROR("failed to setup AVI infoframe: %zd\n", err); return; diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c index 8c0576978d36..13da915991dd 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c @@ -1616,7 +1616,7 @@ static void dce_v8_0_afmt_setmode(struct drm_encoder *encoder, dce_v8_0_audio_write_sad_regs(encoder); dce_v8_0_audio_write_latency_fields(encoder, mode); - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode); if (err < 0) { DRM_ERROR("failed to setup AVI infoframe: %zd\n", err); return; diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c index f8433c93f463..e11309e9bc4f 100644 --- a/drivers/gpu/drm/bridge/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c @@ -1094,8 +1094,9 @@ static void anx78xx_bridge_mode_set(struct drm_bridge *bridge, mutex_lock(&anx78xx->lock); - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, adjusted_mode, - false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, + &anx78xx->connector, + adjusted_mode); if (err) { DRM_ERROR("Failed to setup AVI infoframe: %d\n", err); goto unlock; diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index bfa902013aa4..a9b4f45ae87c 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -258,7 +258,8 @@ static void sii902x_bridge_mode_set(struct drm_bridge *bridge, if (ret) return; - ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, adj, false); + ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, + &sii902x->connector, adj); if (ret < 0) { DRM_ERROR("couldn't fill AVI infoframe\n"); return; diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c index a6e8f4591e63..0cc293a6ac24 100644 --- a/drivers/gpu/drm/bridge/sil-sii8620.c +++ b/drivers/gpu/drm/bridge/sil-sii8620.c @@ -1104,8 +1104,7 @@ static void sii8620_set_infoframes(struct sii8620 *ctx, int ret; ret = drm_hdmi_avi_infoframe_from_display_mode(&frm.avi, - mode, - true); + NULL, mode); if (ctx->use_packed_pixel) frm.avi.colorspace = HDMI_COLORSPACE_YUV422; diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 64c3cf027518..88b720b63126 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -1344,7 +1344,8 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode) u8 val; /* Initialise info frame from DRM mode */ - drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + drm_hdmi_avi_infoframe_from_display_mode(&frame, + &hdmi->connector, mode); if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format)) frame.colorspace = HDMI_COLORSPACE_YUV444; diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index b506e3622b08..cd25bd08bf53 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4830,19 +4830,32 @@ void drm_set_preferred_mode(struct drm_connector *connector, } EXPORT_SYMBOL(drm_set_preferred_mode); +static bool is_hdmi2_sink(struct drm_connector *connector) +{ + /* + * FIXME: sil-sii8620 doesn't have a connector around when + * we need one, so we have to be prepared for a NULL connector. + */ + if (!connector) + return true; + + return connector->display_info.hdmi.scdc.supported || + connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB420; +} + /** * drm_hdmi_avi_infoframe_from_display_mode() - fill an HDMI AVI infoframe with * data from a DRM display mode * @frame: HDMI AVI infoframe + * @connector: the connector * @mode: DRM display mode - * @is_hdmi2_sink: Sink is HDMI 2.0 compliant * * Return: 0 on success or a negative error code on failure. */ int drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, - const struct drm_display_mode *mode, - bool is_hdmi2_sink) + struct drm_connector *connector, + const struct drm_display_mode *mode) { enum hdmi_picture_aspect picture_aspect; int err; @@ -4864,7 +4877,7 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, * HDMI 2.0 VIC range: 1 <= VIC <= 107 (CEA-861-F). So we * have to make sure we dont break HDMI 1.4 sinks. */ - if (!is_hdmi2_sink && frame->video_code > 64) + if (!is_hdmi2_sink(connector) && frame->video_code > 64) frame->video_code = 0; /* @@ -4923,21 +4936,17 @@ EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode); * drm_hdmi_avi_infoframe_quant_range() - fill the HDMI AVI infoframe * quantization range information * @frame: HDMI AVI infoframe + * @connector: the connector * @mode: DRM display mode * @rgb_quant_range: RGB quantization range (Q) * @rgb_quant_range_selectable: Sink support selectable RGB quantization range (QS) - * @is_hdmi2_sink: HDMI 2.0 sink, which has different default recommendations - * - * Note that @is_hdmi2_sink can be derived by looking at the - * &drm_scdc.supported flag stored in &drm_hdmi_info.scdc, - * &drm_display_info.hdmi, which can be found in &drm_connector.display_info. */ void drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, + struct drm_connector *connector, const struct drm_display_mode *mode, enum hdmi_quantization_range rgb_quant_range, - bool rgb_quant_range_selectable, - bool is_hdmi2_sink) + bool rgb_quant_range_selectable) { /* * CEA-861: @@ -4968,7 +4977,7 @@ drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, * we limit non-zero YQ to HDMI 2.0 sinks only as HDMI 2.0 is based * on on CEA-861-F. */ - if (!is_hdmi2_sink || + if (!is_hdmi2_sink(connector) || rgb_quant_range == HDMI_QUANTIZATION_RANGE_LIMITED) frame->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED; diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 2092a650df7d..b857df67aff0 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -819,7 +819,8 @@ static void hdmi_reg_infoframes(struct hdmi_context *hdata) return; } - ret = drm_hdmi_avi_infoframe_from_display_mode(&frm.avi, m, false); + ret = drm_hdmi_avi_infoframe_from_display_mode(&frm.avi, + &hdata->connector, m); if (!ret) ret = hdmi_avi_infoframe_pack(&frm.avi, buf, sizeof(buf)); if (ret > 0) { diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index a7c39f39793f..38c66fbc8276 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -849,7 +849,8 @@ tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode) { union hdmi_infoframe frame; - drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false); + drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, + &priv->connector, mode); frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_FULL; tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, &frame); diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index e2c6a2b3e8f2..8a260bd6954c 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -465,15 +465,12 @@ static void intel_hdmi_set_avi_infoframe(struct intel_encoder *encoder, struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base); const struct drm_display_mode *adjusted_mode = &crtc_state->base.adjusted_mode; - struct drm_connector *connector = &intel_hdmi->attached_connector->base; - bool is_hdmi2_sink = connector->display_info.hdmi.scdc.supported || - connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB420; union hdmi_infoframe frame; int ret; ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, - adjusted_mode, - is_hdmi2_sink); + conn_state->connector, + adjusted_mode); if (ret < 0) { DRM_ERROR("couldn't fill AVI infoframe\n"); return; @@ -486,12 +483,13 @@ static void intel_hdmi_set_avi_infoframe(struct intel_encoder *encoder, else frame.avi.colorspace = HDMI_COLORSPACE_RGB; - drm_hdmi_avi_infoframe_quant_range(&frame.avi, adjusted_mode, + drm_hdmi_avi_infoframe_quant_range(&frame.avi, + conn_state->connector, + adjusted_mode, crtc_state->limited_color_range ? HDMI_QUANTIZATION_RANGE_LIMITED : HDMI_QUANTIZATION_RANGE_FULL, - intel_hdmi->rgb_quant_range_selectable, - is_hdmi2_sink); + intel_hdmi->rgb_quant_range_selectable); drm_hdmi_avi_infoframe_content_type(&frame.avi, conn_state); diff --git a/drivers/gpu/drm/i915/intel_lspcon.c b/drivers/gpu/drm/i915/intel_lspcon.c index 96a8d9524b0c..c18f14d41f1d 100644 --- a/drivers/gpu/drm/i915/intel_lspcon.c +++ b/drivers/gpu/drm/i915/intel_lspcon.c @@ -462,10 +462,8 @@ void lspcon_set_infoframes(struct intel_encoder *encoder, uint8_t buf[VIDEO_DIP_DATA_SIZE]; struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base); struct intel_lspcon *lspcon = &dig_port->lspcon; - struct intel_dp *intel_dp = &dig_port->dp; - struct drm_connector *connector = &intel_dp->attached_connector->base; - const struct drm_display_mode *mode = &crtc_state->base.adjusted_mode; - bool is_hdmi2_sink = connector->display_info.hdmi.scdc.supported; + const struct drm_display_mode *adjusted_mode = + &crtc_state->base.adjusted_mode; if (!lspcon->active) { DRM_ERROR("Writing infoframes while LSPCON disabled ?\n"); @@ -473,7 +471,8 @@ void lspcon_set_infoframes(struct intel_encoder *encoder, } ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, - mode, is_hdmi2_sink); + conn_state->connector, + adjusted_mode); if (ret < 0) { DRM_ERROR("couldn't fill AVI infoframe\n"); return; @@ -488,11 +487,13 @@ void lspcon_set_infoframes(struct intel_encoder *encoder, frame.avi.colorspace = HDMI_COLORSPACE_RGB; } - drm_hdmi_avi_infoframe_quant_range(&frame.avi, mode, + drm_hdmi_avi_infoframe_quant_range(&frame.avi, + conn_state->connector, + adjusted_mode, crtc_state->limited_color_range ? HDMI_QUANTIZATION_RANGE_LIMITED : HDMI_QUANTIZATION_RANGE_FULL, - false, is_hdmi2_sink); + false); ret = hdmi_infoframe_pack(&frame, buf, sizeof(buf)); if (ret < 0) { diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 5805ec1aba12..1277d31adb54 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -981,7 +981,8 @@ static bool intel_sdvo_write_infoframe(struct intel_sdvo *intel_sdvo, } static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo, - const struct intel_crtc_state *pipe_config) + const struct intel_crtc_state *pipe_config, + const struct drm_connector_state *conn_state) { uint8_t sdvo_data[HDMI_INFOFRAME_SIZE(AVI)]; union hdmi_infoframe frame; @@ -989,8 +990,8 @@ static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo, ssize_t len; ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, - &pipe_config->base.adjusted_mode, - false); + conn_state->connector, + &pipe_config->base.adjusted_mode); if (ret < 0) { DRM_ERROR("couldn't fill AVI infoframe\n"); return false; @@ -1316,7 +1317,8 @@ static void intel_sdvo_pre_enable(struct intel_encoder *intel_encoder, intel_sdvo_set_encode(intel_sdvo, SDVO_ENCODE_HDMI); intel_sdvo_set_colorimetry(intel_sdvo, SDVO_COLORIMETRY_RGB256); - intel_sdvo_set_avi_infoframe(intel_sdvo, crtc_state); + intel_sdvo_set_avi_infoframe(intel_sdvo, + crtc_state, conn_state); } else intel_sdvo_set_encode(intel_sdvo, SDVO_ENCODE_DVI); diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 862f3ec22131..f3ef7bf80563 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -981,7 +981,8 @@ static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi, u8 buffer[17]; ssize_t err; - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, + &hdmi->conn, mode); if (err < 0) { dev_err(hdmi->dev, "Failed to get AVI infoframe from mode: %zd\n", err); diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c index 7e357077ed26..5ed4cab2819f 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c @@ -101,7 +101,8 @@ static void msm_hdmi_config_avi_infoframe(struct hdmi *hdmi) u32 val; int len; - drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false); + drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, + hdmi->connector, mode); len = hdmi_infoframe_pack(&frame, buffer, sizeof(buffer)); if (len < 0) { diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 4a56841958c8..f36146d4d9b7 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -554,7 +554,7 @@ nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) u32 max_ac_packet; union hdmi_infoframe avi_frame; union hdmi_infoframe vendor_frame; - bool scdc_supported, high_tmds_clock_ratio = false, scrambling = false; + bool high_tmds_clock_ratio = false, scrambling = false; u8 config; int ret; int size; @@ -564,10 +564,9 @@ nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) return; hdmi = &nv_connector->base.display_info.hdmi; - scdc_supported = hdmi->scdc.supported; - ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame.avi, mode, - scdc_supported); + ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame.avi, + &nv_connector->base, mode); if (!ret) { /* We have an AVI InfoFrame, populate it to the display */ args.pwr.avi_infoframe_length diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c index 452e625f6ce3..4566e0a75cb8 100644 --- a/drivers/gpu/drm/omapdrm/omap_encoder.c +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c @@ -128,8 +128,8 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder, if (hdmi_mode && dssdev->ops->hdmi.set_infoframe) { struct hdmi_avi_infoframe avi; - r = drm_hdmi_avi_infoframe_from_display_mode(&avi, adjusted_mode, - false); + r = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector, + adjusted_mode); if (r == 0) dssdev->ops->hdmi.set_infoframe(dssdev, &avi); } diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c index 770e31f5fd1b..5a7d48339b32 100644 --- a/drivers/gpu/drm/radeon/radeon_audio.c +++ b/drivers/gpu/drm/radeon/radeon_audio.c @@ -516,7 +516,7 @@ static int radeon_audio_set_avi_packet(struct drm_encoder *encoder, if (!connector) return -EINVAL; - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode); if (err < 0) { DRM_ERROR("failed to setup AVI infoframe: %d\n", err); return err; diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c index 1c02b3e61299..27c945e030a0 100644 --- a/drivers/gpu/drm/rockchip/inno_hdmi.c +++ b/drivers/gpu/drm/rockchip/inno_hdmi.c @@ -295,7 +295,9 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi, union hdmi_infoframe frame; int rc; - rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false); + rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, + &hdmi->connector, + mode); if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444) frame.avi.colorspace = HDMI_COLORSPACE_YUV444; diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index ccf718404a1c..4b86878f8ddf 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -434,7 +434,8 @@ static int hdmi_avi_infoframe_config(struct sti_hdmi *hdmi) DRM_DEBUG_DRIVER("\n"); - ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe, mode, false); + ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe, + hdmi->drm_connector, mode); if (ret < 0) { DRM_ERROR("failed to setup AVI infoframe: %d\n", ret); return ret; diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c index 061d2e0d9011..554a6f4561f3 100644 --- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c +++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c @@ -52,7 +52,8 @@ static int sun4i_hdmi_setup_avi_infoframes(struct sun4i_hdmi *hdmi, u8 buffer[17]; int i, ret; - ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, + &hdmi->connector, mode); if (ret < 0) { DRM_ERROR("Failed to get infoframes from mode\n"); return ret; diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 0082468f703c..a7566c67bfb0 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -741,7 +741,8 @@ static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi, u8 buffer[17]; ssize_t err; - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, + &hdmi->output.connector, mode); if (err < 0) { dev_err(hdmi->dev, "failed to setup AVI infoframe: %zd\n", err); return; diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index b129da2e5afd..d90bf5f6a67a 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -2116,7 +2116,8 @@ tegra_sor_hdmi_setup_avi_infoframe(struct tegra_sor *sor, value &= ~INFOFRAME_CTRL_ENABLE; tegra_sor_writel(sor, value, SOR_HDMI_AVI_INFOFRAME_CTRL); - err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, + &sor->output.connector, mode); if (err < 0) { dev_err(sor->dev, "failed to setup AVI infoframe: %d\n", err); return err; diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 2f276222e30f..4f9a80f7f242 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -424,18 +424,19 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder) union hdmi_infoframe frame; int ret; - ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false); + ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, + hdmi->connector, mode); if (ret < 0) { DRM_ERROR("couldn't fill AVI infoframe\n"); return; } - drm_hdmi_avi_infoframe_quant_range(&frame.avi, mode, + drm_hdmi_avi_infoframe_quant_range(&frame.avi, + hdmi->connector, mode, vc4_encoder->limited_rgb_range ? HDMI_QUANTIZATION_RANGE_LIMITED : HDMI_QUANTIZATION_RANGE_FULL, - vc4_encoder->rgb_range_selectable, - false); + vc4_encoder->rgb_range_selectable); frame.avi.right_bar = cstate->tv.margins.right; frame.avi.left_bar = cstate->tv.margins.left; diff --git a/drivers/gpu/drm/zte/zx_hdmi.c b/drivers/gpu/drm/zte/zx_hdmi.c index 78655269d843..9fc98bb4f3d9 100644 --- a/drivers/gpu/drm/zte/zx_hdmi.c +++ b/drivers/gpu/drm/zte/zx_hdmi.c @@ -125,7 +125,9 @@ static int zx_hdmi_config_video_avi(struct zx_hdmi *hdmi, union hdmi_infoframe frame; int ret; - ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false); + ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, + &hdmi->connector, + mode); if (ret) { DRM_DEV_ERROR(hdmi->dev, "failed to get avi infoframe: %d\n", ret); diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index e3c404833115..9db6f130df65 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -352,18 +352,18 @@ drm_load_edid_firmware(struct drm_connector *connector) int drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, - const struct drm_display_mode *mode, - bool is_hdmi2_sink); + struct drm_connector *connector, + const struct drm_display_mode *mode); int drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, struct drm_connector *connector, const struct drm_display_mode *mode); void drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, + struct drm_connector *connector, const struct drm_display_mode *mode, enum hdmi_quantization_range rgb_quant_range, - bool rgb_quant_range_selectable, - bool is_hdmi2_sink); + bool rgb_quant_range_selectable); /** * drm_eld_mnl - Get ELD monitor name length in bytes. -- cgit v1.2.3-71-gd317 From 1581b2df4cbf614315225f121636e1eb7c80cbae Mon Sep 17 00:00:00 2001 From: Ville Syrjälä Date: Tue, 8 Jan 2019 19:28:28 +0200 Subject: drm/edid: Add display_info.rgb_quant_range_selectable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the CEA-861 QS bit handling entirely into the edid code. No need to bother the drivers with this. Cc: Alex Deucher Cc: "Christian König" Cc: "David (ChunMing) Zhou" Cc: amd-gfx@lists.freedesktop.org Cc: Eric Anholt (supporter:DRM DRIVERS FOR VC4) Signed-off-by: Ville Syrjälä Acked-by: Alex Deucher Acked-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20190108172828.15184-4-ville.syrjala@linux.intel.com --- drivers/gpu/drm/drm_edid.c | 70 ++++++++++++++++------------------- drivers/gpu/drm/i915/intel_drv.h | 1 - drivers/gpu/drm/i915/intel_hdmi.c | 8 +--- drivers/gpu/drm/i915/intel_lspcon.c | 3 +- drivers/gpu/drm/i915/intel_sdvo.c | 7 +--- drivers/gpu/drm/radeon/radeon_audio.c | 3 +- drivers/gpu/drm/vc4/vc4_hdmi.c | 9 +---- include/drm/drm_connector.h | 6 +++ include/drm/drm_edid.h | 4 +- 9 files changed, 43 insertions(+), 68 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index cd25bd08bf53..990b1909f9d7 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3641,6 +3641,20 @@ static bool cea_db_is_hdmi_forum_vsdb(const u8 *db) return oui == HDMI_FORUM_IEEE_OUI; } +static bool cea_db_is_vcdb(const u8 *db) +{ + if (cea_db_tag(db) != USE_EXTENDED_TAG) + return false; + + if (cea_db_payload_len(db) != 2) + return false; + + if (cea_db_extended_tag(db) != EXT_VIDEO_CAPABILITY_BLOCK) + return false; + + return true; +} + static bool cea_db_is_y420cmdb(const u8 *db) { if (cea_db_tag(db) != USE_EXTENDED_TAG) @@ -4223,41 +4237,6 @@ end: } EXPORT_SYMBOL(drm_detect_monitor_audio); -/** - * drm_rgb_quant_range_selectable - is RGB quantization range selectable? - * @edid: EDID block to scan - * - * Check whether the monitor reports the RGB quantization range selection - * as supported. The AVI infoframe can then be used to inform the monitor - * which quantization range (full or limited) is used. - * - * Return: True if the RGB quantization range is selectable, false otherwise. - */ -bool drm_rgb_quant_range_selectable(struct edid *edid) -{ - u8 *edid_ext; - int i, start, end; - - edid_ext = drm_find_cea_extension(edid); - if (!edid_ext) - return false; - - if (cea_db_offsets(edid_ext, &start, &end)) - return false; - - for_each_cea_db(edid_ext, i, start, end) { - if (cea_db_tag(&edid_ext[i]) == USE_EXTENDED_TAG && - cea_db_payload_len(&edid_ext[i]) == 2 && - cea_db_extended_tag(&edid_ext[i]) == - EXT_VIDEO_CAPABILITY_BLOCK) { - DRM_DEBUG_KMS("CEA VCDB 0x%02x\n", edid_ext[i + 2]); - return edid_ext[i + 2] & EDID_CEA_VCDB_QS; - } - } - - return false; -} -EXPORT_SYMBOL(drm_rgb_quant_range_selectable); /** * drm_default_rgb_quant_range - default RGB quantization range @@ -4278,6 +4257,16 @@ drm_default_rgb_quant_range(const struct drm_display_mode *mode) } EXPORT_SYMBOL(drm_default_rgb_quant_range); +static void drm_parse_vcdb(struct drm_connector *connector, const u8 *db) +{ + struct drm_display_info *info = &connector->display_info; + + DRM_DEBUG_KMS("CEA VCDB 0x%02x\n", db[2]); + + if (db[2] & EDID_CEA_VCDB_QS) + info->rgb_quant_range_selectable = true; +} + static void drm_parse_ycbcr420_deep_color_info(struct drm_connector *connector, const u8 *db) { @@ -4452,6 +4441,8 @@ static void drm_parse_cea_ext(struct drm_connector *connector, drm_parse_hdmi_forum_vsdb(connector, db); if (cea_db_is_y420cmdb(db)) drm_parse_y420cmdb_bitmap(connector, db); + if (cea_db_is_vcdb(db)) + drm_parse_vcdb(connector, db); } } @@ -4472,6 +4463,7 @@ drm_reset_display_info(struct drm_connector *connector) info->max_tmds_clock = 0; info->dvi_dual = false; info->has_hdmi_infoframe = false; + info->rgb_quant_range_selectable = false; memset(&info->hdmi, 0, sizeof(info->hdmi)); info->non_desktop = 0; @@ -4939,15 +4931,15 @@ EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode); * @connector: the connector * @mode: DRM display mode * @rgb_quant_range: RGB quantization range (Q) - * @rgb_quant_range_selectable: Sink support selectable RGB quantization range (QS) */ void drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, struct drm_connector *connector, const struct drm_display_mode *mode, - enum hdmi_quantization_range rgb_quant_range, - bool rgb_quant_range_selectable) + enum hdmi_quantization_range rgb_quant_range) { + const struct drm_display_info *info = &connector->display_info; + /* * CEA-861: * "A Source shall not send a non-zero Q value that does not correspond @@ -4958,7 +4950,7 @@ drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, * HDMI 2.0 recommends sending non-zero Q when it does match the * default RGB quantization range for the mode, even when QS=0. */ - if (rgb_quant_range_selectable || + if (info->rgb_quant_range_selectable || rgb_quant_range == drm_default_rgb_quant_range(mode)) frame->quantization_range = rgb_quant_range; else diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index a7d9ac912125..153ee47d9c03 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1057,7 +1057,6 @@ struct intel_hdmi { } dp_dual_mode; bool has_hdmi_sink; bool has_audio; - bool rgb_quant_range_selectable; struct intel_connector *attached_connector; struct cec_notifier *cec_notifier; }; diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 8a260bd6954c..4d264e577e3b 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -462,7 +462,6 @@ static void intel_hdmi_set_avi_infoframe(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { - struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base); const struct drm_display_mode *adjusted_mode = &crtc_state->base.adjusted_mode; union hdmi_infoframe frame; @@ -488,8 +487,7 @@ static void intel_hdmi_set_avi_infoframe(struct intel_encoder *encoder, adjusted_mode, crtc_state->limited_color_range ? HDMI_QUANTIZATION_RANGE_LIMITED : - HDMI_QUANTIZATION_RANGE_FULL, - intel_hdmi->rgb_quant_range_selectable); + HDMI_QUANTIZATION_RANGE_FULL); drm_hdmi_avi_infoframe_content_type(&frame.avi, conn_state); @@ -1816,7 +1814,6 @@ intel_hdmi_unset_edid(struct drm_connector *connector) intel_hdmi->has_hdmi_sink = false; intel_hdmi->has_audio = false; - intel_hdmi->rgb_quant_range_selectable = false; intel_hdmi->dp_dual_mode.type = DRM_DP_DUAL_MODE_NONE; intel_hdmi->dp_dual_mode.max_tmds_clock = 0; @@ -1900,9 +1897,6 @@ intel_hdmi_set_edid(struct drm_connector *connector) to_intel_connector(connector)->detect_edid = edid; if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) { - intel_hdmi->rgb_quant_range_selectable = - drm_rgb_quant_range_selectable(edid); - intel_hdmi->has_audio = drm_detect_monitor_audio(edid); intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid); diff --git a/drivers/gpu/drm/i915/intel_lspcon.c b/drivers/gpu/drm/i915/intel_lspcon.c index c18f14d41f1d..7d15be5932e0 100644 --- a/drivers/gpu/drm/i915/intel_lspcon.c +++ b/drivers/gpu/drm/i915/intel_lspcon.c @@ -492,8 +492,7 @@ void lspcon_set_infoframes(struct intel_encoder *encoder, adjusted_mode, crtc_state->limited_color_range ? HDMI_QUANTIZATION_RANGE_LIMITED : - HDMI_QUANTIZATION_RANGE_FULL, - false); + HDMI_QUANTIZATION_RANGE_FULL); ret = hdmi_infoframe_pack(&frame, buf, sizeof(buf)); if (ret < 0) { diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 9c16e273fb8d..669fa9faad70 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -103,7 +103,6 @@ struct intel_sdvo { bool has_hdmi_monitor; bool has_hdmi_audio; - bool rgb_quant_range_selectable; /* DDC bus used by this SDVO encoder */ uint8_t ddc_bus; @@ -1004,8 +1003,7 @@ static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo, adjusted_mode, pipe_config->limited_color_range ? HDMI_QUANTIZATION_RANGE_LIMITED : - HDMI_QUANTIZATION_RANGE_FULL, - intel_sdvo->rgb_quant_range_selectable); + HDMI_QUANTIZATION_RANGE_FULL); len = hdmi_infoframe_pack(&frame, sdvo_data, sizeof(sdvo_data)); if (len < 0) @@ -1805,8 +1803,6 @@ intel_sdvo_tmds_sink_detect(struct drm_connector *connector) if (intel_sdvo_connector->is_hdmi) { intel_sdvo->has_hdmi_monitor = drm_detect_hdmi_monitor(edid); intel_sdvo->has_hdmi_audio = drm_detect_monitor_audio(edid); - intel_sdvo->rgb_quant_range_selectable = - drm_rgb_quant_range_selectable(edid); } } else status = connector_status_disconnected; @@ -1855,7 +1851,6 @@ intel_sdvo_detect(struct drm_connector *connector, bool force) intel_sdvo->has_hdmi_monitor = false; intel_sdvo->has_hdmi_audio = false; - intel_sdvo->rgb_quant_range_selectable = false; if ((intel_sdvo_connector->output_flag & response) == 0) ret = connector_status_disconnected; diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c index 708765bf9e66..96f71114237a 100644 --- a/drivers/gpu/drm/radeon/radeon_audio.c +++ b/drivers/gpu/drm/radeon/radeon_audio.c @@ -526,8 +526,7 @@ static int radeon_audio_set_avi_packet(struct drm_encoder *encoder, drm_hdmi_avi_infoframe_quant_range(&frame, connector, mode, radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB ? HDMI_QUANTIZATION_RANGE_LIMITED : - HDMI_QUANTIZATION_RANGE_FULL, - drm_rgb_quant_range_selectable(radeon_connector_edid(connector))); + HDMI_QUANTIZATION_RANGE_FULL); } err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 4f9a80f7f242..051b61b62541 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -109,7 +109,6 @@ struct vc4_hdmi_encoder { struct vc4_encoder base; bool hdmi_monitor; bool limited_rgb_range; - bool rgb_range_selectable; }; static inline struct vc4_hdmi_encoder * @@ -280,11 +279,6 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector) vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid); - if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) { - vc4_encoder->rgb_range_selectable = - drm_rgb_quant_range_selectable(edid); - } - drm_connector_update_edid_property(connector, edid); ret = drm_add_edid_modes(connector, edid); kfree(edid); @@ -435,8 +429,7 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder) hdmi->connector, mode, vc4_encoder->limited_rgb_range ? HDMI_QUANTIZATION_RANGE_LIMITED : - HDMI_QUANTIZATION_RANGE_FULL, - vc4_encoder->rgb_range_selectable); + HDMI_QUANTIZATION_RANGE_FULL); frame.avi.right_bar = cstate->tv.margins.right; frame.avi.left_bar = cstate->tv.margins.left; diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 594f8d33a61f..e8ad30d7561a 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -365,6 +365,12 @@ struct drm_display_info { */ bool has_hdmi_infoframe; + /** + * @rgb_quant_range_selectable: Does the sink support selecting + * the RGB quantization range? + */ + bool rgb_quant_range_selectable; + /** * @edid_hdmi_dc_modes: Mask of supported hdmi deep color modes. Even * more stuff redundant with @bus_formats. diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 9db6f130df65..8dc1a081fb36 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -362,8 +362,7 @@ void drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, struct drm_connector *connector, const struct drm_display_mode *mode, - enum hdmi_quantization_range rgb_quant_range, - bool rgb_quant_range_selectable); + enum hdmi_quantization_range rgb_quant_range); /** * drm_eld_mnl - Get ELD monitor name length in bytes. @@ -471,7 +470,6 @@ u8 drm_match_cea_mode(const struct drm_display_mode *to_match); enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code); bool drm_detect_hdmi_monitor(struct edid *edid); bool drm_detect_monitor_audio(struct edid *edid); -bool drm_rgb_quant_range_selectable(struct edid *edid); enum hdmi_quantization_range drm_default_rgb_quant_range(const struct drm_display_mode *mode); int drm_add_modes_noedid(struct drm_connector *connector, -- cgit v1.2.3-71-gd317 From ebcc0e6b509108b4a67daa4c55809a05ab7f4b77 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Thu, 10 Jan 2019 19:53:29 -0500 Subject: drm/dp_mst: Introduce new refcounting scheme for mstbs and ports The current way of handling refcounting in the DP MST helpers is really confusing and probably just plain wrong because it's been hacked up many times over the years without anyone actually going over the code and seeing if things could be simplified. To the best of my understanding, the current scheme works like this: drm_dp_mst_port and drm_dp_mst_branch both have a single refcount. When this refcount hits 0 for either of the two, they're removed from the topology state, but not immediately freed. Both ports and branch devices will reinitialize their kref once it's hit 0 before actually destroying themselves. The intended purpose behind this is so that we can avoid problems like not being able to free a remote payload that might still be active, due to us having removed all of the port/branch device structures in memory, as per: commit 91a25e463130 ("drm/dp/mst: deallocate payload on port destruction") Which may have worked, but then it caused use-after-free errors. Being new to MST at the time, I tried fixing it; commit 263efde31f97 ("drm/dp/mst: Get validated port ref in drm_dp_update_payload_part1()") But, that was broken: both drm_dp_mst_port and drm_dp_mst_branch structs are validated in almost every DP MST helper function. Simply put, this means we go through the topology and try to see if the given drm_dp_mst_branch or drm_dp_mst_port is still attached to something before trying to use it in order to avoid dereferencing freed memory (something that has happened a LOT in the past with this library). Because of this it doesn't actually matter whether or not we keep keep the ports and branches around in memory as that's not enough, because any function that validates the branches and ports passed to it will still reject them anyway since they're no longer in the topology structure. So, use-after-free errors were fixed but payload deallocation was completely broken. Two years later, AMD informed me about this issue and I attempted to come up with a temporary fix, pending a long-overdue cleanup of this library: commit c54c7374ff44 ("drm/dp_mst: Skip validating ports during destruction, just ref") But then that introduced use-after-free errors, so I quickly reverted it: commit 9765635b3075 ("Revert "drm/dp_mst: Skip validating ports during destruction, just ref"") And in the process, learned that there is just no simple fix for this: the design is just broken. Unfortunately, the usage of these helpers are quite broken as well. Some drivers like i915 have been smart enough to avoid accessing any kind of information from MST port structures, but others like nouveau have assumed, understandably so, that drm_dp_mst_port structures are normal and can just be accessed at any time without worrying about use-after-free errors. After a lot of discussion, me and Daniel Vetter came up with a better idea to replace all of this. To summarize, since this is documented far more indepth in the documentation this patch introduces, we make it so that drm_dp_mst_port and drm_dp_mst_branch structures have two different classes of refcounts: topology_kref, and malloc_kref. topology_kref corresponds to the lifetime of the given drm_dp_mst_port or drm_dp_mst_branch in it's given topology. Once it hits zero, any associated connectors are removed and the branch or port can no longer be validated. malloc_kref corresponds to the lifetime of the memory allocation for the actual structure, and will always be non-zero so long as the topology_kref is non-zero. This gives us a way to allow callers to hold onto port and branch device structures past their topology lifetime, and dramatically simplifies the lifetimes of both structures. This also finally fixes the port deallocation problem, properly. Additionally: since this now means that we can keep ports and branch devices allocated in memory for however long we need, we no longer need a significant amount of the port validation that we currently do. Additionally, there is one last scenario that this fixes, which couldn't have been fixed properly beforehand: - CPU1 unrefs port from topology (refcount 1->0) - CPU2 refs port in topology(refcount 0->1) Since we now can guarantee memory safety for ports and branches as-needed, we also can make our main reference counting functions fix this problem by using kref_get_unless_zero() internally so that topology refcounts can only ever reach 0 once. Changes since v4: * Change the kernel-figure summary for dp-mst/topology-figure-1.dot a bit - danvet * Remove figure numbers - danvet Changes since v3: * Remove rebase detritus - danvet * Split out purely style changes into separate patches - hwentlan Changes since v2: * Fix commit message - checkpatch * s/)-1/) - 1/g - checkpatch Changes since v1: * Remove forward declarations - danvet * Move "Branch device and port refcounting" section from documentation into kernel-doc comments - danvet * Export internal topology lifetime functions into their own section in the kernel-docs - danvet * s/@/&/g for struct references in kernel-docs - danvet * Drop the "when they are no longer being used" bits from the kernel docs - danvet * Modify diagrams to show how the DRM driver interacts with the topology and payloads - danvet * Make suggested documentation changes for drm_dp_mst_topology_get_mstb() and drm_dp_mst_topology_get_port() - danvet * Better explain the relationship between malloc refs and topology krefs in the documentation for drm_dp_mst_topology_get_port() and drm_dp_mst_topology_get_mstb() - danvet * Fix "See also" in drm_dp_mst_topology_get_mstb() - danvet * Rename drm_dp_mst_topology_get_(port|mstb)() -> drm_dp_mst_topology_try_get_(port|mstb)() and drm_dp_mst_topology_ref_(port|mstb)() -> drm_dp_mst_topology_get_(port|mstb)() - danvet * s/should/must in docs - danvet * WARN_ON(refcount == 0) in topology_get_(mstb|port) - danvet * Move kdocs for mstb/port structs inline - danvet * Split drm_dp_get_last_connected_port_and_mstb() changes into their own commit - danvet Signed-off-by: Lyude Paul Reviewed-by: Harry Wentland Reviewed-by: Daniel Vetter Cc: David Airlie Cc: Jerry Zuo Cc: Juston Li Link: https://patchwork.freedesktop.org/patch/msgid/20190111005343.17443-7-lyude@redhat.com --- Documentation/gpu/dp-mst/topology-figure-1.dot | 52 +++ Documentation/gpu/dp-mst/topology-figure-2.dot | 56 +++ Documentation/gpu/dp-mst/topology-figure-3.dot | 59 ++++ Documentation/gpu/drm-kms-helpers.rst | 26 +- drivers/gpu/drm/drm_dp_mst_topology.c | 458 +++++++++++++++++++++---- include/drm/drm_dp_mst_helper.h | 32 +- 6 files changed, 614 insertions(+), 69 deletions(-) create mode 100644 Documentation/gpu/dp-mst/topology-figure-1.dot create mode 100644 Documentation/gpu/dp-mst/topology-figure-2.dot create mode 100644 Documentation/gpu/dp-mst/topology-figure-3.dot (limited to 'include') diff --git a/Documentation/gpu/dp-mst/topology-figure-1.dot b/Documentation/gpu/dp-mst/topology-figure-1.dot new file mode 100644 index 000000000000..157e17c7e0b0 --- /dev/null +++ b/Documentation/gpu/dp-mst/topology-figure-1.dot @@ -0,0 +1,52 @@ +digraph T { + /* Make sure our payloads are always drawn below the driver node */ + subgraph cluster_driver { + fillcolor = grey; + style = filled; + driver -> {payload1, payload2} [dir=none]; + } + + /* Driver malloc references */ + edge [style=dashed]; + driver -> port1; + driver -> port2; + driver -> port3:e; + driver -> port4; + + payload1:s -> port1:e; + payload2:s -> port3:e; + edge [style=""]; + + subgraph cluster_topology { + label="Topology Manager"; + labelloc=bottom; + + /* Topology references */ + mstb1 -> {port1, port2}; + port1 -> mstb2; + port2 -> mstb3 -> {port3, port4}; + port3 -> mstb4; + + /* Malloc references */ + edge [style=dashed;dir=back]; + mstb1 -> {port1, port2}; + port1 -> mstb2; + port2 -> mstb3 -> {port3, port4}; + port3 -> mstb4; + } + + driver [label="DRM driver";style=filled;shape=box;fillcolor=lightblue]; + + payload1 [label="Payload #1";style=filled;shape=box;fillcolor=lightblue]; + payload2 [label="Payload #2";style=filled;shape=box;fillcolor=lightblue]; + + mstb1 [label="MSTB #1";style=filled;fillcolor=palegreen;shape=oval]; + mstb2 [label="MSTB #2";style=filled;fillcolor=palegreen;shape=oval]; + mstb3 [label="MSTB #3";style=filled;fillcolor=palegreen;shape=oval]; + mstb4 [label="MSTB #4";style=filled;fillcolor=palegreen;shape=oval]; + + port1 [label="Port #1";shape=oval]; + port2 [label="Port #2";shape=oval]; + port3 [label="Port #3";shape=oval]; + port4 [label="Port #4";shape=oval]; +} diff --git a/Documentation/gpu/dp-mst/topology-figure-2.dot b/Documentation/gpu/dp-mst/topology-figure-2.dot new file mode 100644 index 000000000000..4243dd1737cb --- /dev/null +++ b/Documentation/gpu/dp-mst/topology-figure-2.dot @@ -0,0 +1,56 @@ +digraph T { + /* Make sure our payloads are always drawn below the driver node */ + subgraph cluster_driver { + fillcolor = grey; + style = filled; + driver -> {payload1, payload2} [dir=none]; + } + + /* Driver malloc references */ + edge [style=dashed]; + driver -> port1; + driver -> port2; + driver -> port3:e; + driver -> port4 [color=red]; + + payload1:s -> port1:e; + payload2:s -> port3:e; + edge [style=""]; + + subgraph cluster_topology { + label="Topology Manager"; + labelloc=bottom; + + /* Topology references */ + mstb1 -> {port1, port2}; + port1 -> mstb2; + edge [color=red]; + port2 -> mstb3 -> {port3, port4}; + port3 -> mstb4; + edge [color=""]; + + /* Malloc references */ + edge [style=dashed;dir=back]; + mstb1 -> {port1, port2}; + port1 -> mstb2; + port2 -> mstb3 -> port3; + edge [color=red]; + mstb3 -> port4; + port3 -> mstb4; + } + + mstb1 [label="MSTB #1";style=filled;fillcolor=palegreen]; + mstb2 [label="MSTB #2";style=filled;fillcolor=palegreen]; + mstb3 [label="MSTB #3";style=filled;fillcolor=palegreen]; + mstb4 [label="MSTB #4";style=filled;fillcolor=grey]; + + port1 [label="Port #1"]; + port2 [label="Port #2"]; + port3 [label="Port #3"]; + port4 [label="Port #4";style=filled;fillcolor=grey]; + + driver [label="DRM driver";style=filled;shape=box;fillcolor=lightblue]; + + payload1 [label="Payload #1";style=filled;shape=box;fillcolor=lightblue]; + payload2 [label="Payload #2";style=filled;shape=box;fillcolor=lightblue]; +} diff --git a/Documentation/gpu/dp-mst/topology-figure-3.dot b/Documentation/gpu/dp-mst/topology-figure-3.dot new file mode 100644 index 000000000000..6cd78d06778b --- /dev/null +++ b/Documentation/gpu/dp-mst/topology-figure-3.dot @@ -0,0 +1,59 @@ +digraph T { + /* Make sure our payloads are always drawn below the driver node */ + subgraph cluster_driver { + fillcolor = grey; + style = filled; + edge [dir=none]; + driver -> payload1; + driver -> payload2 [penwidth=3]; + edge [dir=""]; + } + + /* Driver malloc references */ + edge [style=dashed]; + driver -> port1; + driver -> port2; + driver -> port3:e; + driver -> port4 [color=grey]; + payload1:s -> port1:e; + payload2:s -> port3:e [penwidth=3]; + edge [style=""]; + + subgraph cluster_topology { + label="Topology Manager"; + labelloc=bottom; + + /* Topology references */ + mstb1 -> {port1, port2}; + port1 -> mstb2; + edge [color=grey]; + port2 -> mstb3 -> {port3, port4}; + port3 -> mstb4; + edge [color=""]; + + /* Malloc references */ + edge [style=dashed;dir=back]; + mstb1 -> {port1, port2}; + port1 -> mstb2; + port2 -> mstb3 [penwidth=3]; + mstb3 -> port3 [penwidth=3]; + edge [color=grey]; + mstb3 -> port4; + port3 -> mstb4; + } + + mstb1 [label="MSTB #1";style=filled;fillcolor=palegreen]; + mstb2 [label="MSTB #2";style=filled;fillcolor=palegreen]; + mstb3 [label="MSTB #3";style=filled;fillcolor=palegreen;penwidth=3]; + mstb4 [label="MSTB #4";style=filled;fillcolor=grey]; + + port1 [label="Port #1"]; + port2 [label="Port #2";penwidth=5]; + port3 [label="Port #3";penwidth=3]; + port4 [label="Port #4";style=filled;fillcolor=grey]; + + driver [label="DRM driver";style=filled;shape=box;fillcolor=lightblue]; + + payload1 [label="Payload #1";style=filled;shape=box;fillcolor=lightblue]; + payload2 [label="Payload #2";style=filled;shape=box;fillcolor=lightblue;penwidth=3]; +} diff --git a/Documentation/gpu/drm-kms-helpers.rst b/Documentation/gpu/drm-kms-helpers.rst index 4b4dc236ef6f..27001ae5d370 100644 --- a/Documentation/gpu/drm-kms-helpers.rst +++ b/Documentation/gpu/drm-kms-helpers.rst @@ -208,18 +208,40 @@ Display Port Dual Mode Adaptor Helper Functions Reference .. kernel-doc:: drivers/gpu/drm/drm_dp_dual_mode_helper.c :export: -Display Port MST Helper Functions Reference -=========================================== +Display Port MST Helpers +======================== + +Overview +-------- .. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c :doc: dp mst helper +.. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c + :doc: Branch device and port refcounting + +Functions Reference +------------------- + .. kernel-doc:: include/drm/drm_dp_mst_helper.h :internal: .. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c :export: +Topology Lifetime Internals +--------------------------- + +These functions aren't exported to drivers, but are documented here to help make +the MST topology helpers easier to understand + +.. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c + :functions: drm_dp_mst_topology_try_get_mstb drm_dp_mst_topology_get_mstb + drm_dp_mst_topology_put_mstb + drm_dp_mst_topology_try_get_port drm_dp_mst_topology_get_port + drm_dp_mst_topology_put_port + drm_dp_mst_get_mstb_malloc drm_dp_mst_put_mstb_malloc + MIPI DSI Helper Functions Reference =================================== diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 074e985093ca..796985609933 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -850,46 +850,212 @@ static struct drm_dp_mst_branch *drm_dp_add_mst_branch_device(u8 lct, u8 *rad) if (lct > 1) memcpy(mstb->rad, rad, lct / 2); INIT_LIST_HEAD(&mstb->ports); - kref_init(&mstb->kref); + kref_init(&mstb->topology_kref); + kref_init(&mstb->malloc_kref); return mstb; } -static void drm_dp_free_mst_port(struct kref *kref); - static void drm_dp_free_mst_branch_device(struct kref *kref) { - struct drm_dp_mst_branch *mstb = container_of(kref, struct drm_dp_mst_branch, kref); - if (mstb->port_parent) { - if (list_empty(&mstb->port_parent->next)) - kref_put(&mstb->port_parent->kref, drm_dp_free_mst_port); - } + struct drm_dp_mst_branch *mstb = + container_of(kref, struct drm_dp_mst_branch, malloc_kref); + + if (mstb->port_parent) + drm_dp_mst_put_port_malloc(mstb->port_parent); + kfree(mstb); } +/** + * DOC: Branch device and port refcounting + * + * Topology refcount overview + * ~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * The refcounting schemes for &struct drm_dp_mst_branch and &struct + * drm_dp_mst_port are somewhat unusual. Both ports and branch devices have + * two different kinds of refcounts: topology refcounts, and malloc refcounts. + * + * Topology refcounts are not exposed to drivers, and are handled internally + * by the DP MST helpers. The helpers use them in order to prevent the + * in-memory topology state from being changed in the middle of critical + * operations like changing the internal state of payload allocations. This + * means each branch and port will be considered to be connected to the rest + * of the topology until it's topology refcount reaches zero. Additionally, + * for ports this means that their associated &struct drm_connector will stay + * registered with userspace until the port's refcount reaches 0. + * + * Malloc refcount overview + * ~~~~~~~~~~~~~~~~~~~~~~~~ + * + * Malloc references are used to keep a &struct drm_dp_mst_port or &struct + * drm_dp_mst_branch allocated even after all of its topology references have + * been dropped, so that the driver or MST helpers can safely access each + * branch's last known state before it was disconnected from the topology. + * When the malloc refcount of a port or branch reaches 0, the memory + * allocation containing the &struct drm_dp_mst_branch or &struct + * drm_dp_mst_port respectively will be freed. + * + * For &struct drm_dp_mst_branch, malloc refcounts are not currently exposed + * to drivers. As of writing this documentation, there are no drivers that + * have a usecase for accessing &struct drm_dp_mst_branch outside of the MST + * helpers. Exposing this API to drivers in a race-free manner would take more + * tweaking of the refcounting scheme, however patches are welcome provided + * there is a legitimate driver usecase for this. + * + * Refcount relationships in a topology + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * Let's take a look at why the relationship between topology and malloc + * refcounts is designed the way it is. + * + * .. kernel-figure:: dp-mst/topology-figure-1.dot + * + * An example of topology and malloc refs in a DP MST topology with two + * active payloads. Topology refcount increments are indicated by solid + * lines, and malloc refcount increments are indicated by dashed lines. + * Each starts from the branch which incremented the refcount, and ends at + * the branch to which the refcount belongs to, i.e. the arrow points the + * same way as the C pointers used to reference a structure. + * + * As you can see in the above figure, every branch increments the topology + * refcount of it's children, and increments the malloc refcount of it's + * parent. Additionally, every payload increments the malloc refcount of it's + * assigned port by 1. + * + * So, what would happen if MSTB #3 from the above figure was unplugged from + * the system, but the driver hadn't yet removed payload #2 from port #3? The + * topology would start to look like the figure below. + * + * .. kernel-figure:: dp-mst/topology-figure-2.dot + * + * Ports and branch devices which have been released from memory are + * colored grey, and references which have been removed are colored red. + * + * Whenever a port or branch device's topology refcount reaches zero, it will + * decrement the topology refcounts of all its children, the malloc refcount + * of its parent, and finally its own malloc refcount. For MSTB #4 and port + * #4, this means they both have been disconnected from the topology and freed + * from memory. But, because payload #2 is still holding a reference to port + * #3, port #3 is removed from the topology but it's &struct drm_dp_mst_port + * is still accessible from memory. This also means port #3 has not yet + * decremented the malloc refcount of MSTB #3, so it's &struct + * drm_dp_mst_branch will also stay allocated in memory until port #3's + * malloc refcount reaches 0. + * + * This relationship is necessary because in order to release payload #2, we + * need to be able to figure out the last relative of port #3 that's still + * connected to the topology. In this case, we would travel up the topology as + * shown below. + * + * .. kernel-figure:: dp-mst/topology-figure-3.dot + * + * And finally, remove payload #2 by communicating with port #2 through + * sideband transactions. + */ + +/** + * drm_dp_mst_get_mstb_malloc() - Increment the malloc refcount of a branch + * device + * @mstb: The &struct drm_dp_mst_branch to increment the malloc refcount of + * + * Increments &drm_dp_mst_branch.malloc_kref. When + * &drm_dp_mst_branch.malloc_kref reaches 0, the memory allocation for @mstb + * will be released and @mstb may no longer be used. + * + * See also: drm_dp_mst_put_mstb_malloc() + */ +static void +drm_dp_mst_get_mstb_malloc(struct drm_dp_mst_branch *mstb) +{ + kref_get(&mstb->malloc_kref); + DRM_DEBUG("mstb %p (%d)\n", mstb, kref_read(&mstb->malloc_kref)); +} + +/** + * drm_dp_mst_put_mstb_malloc() - Decrement the malloc refcount of a branch + * device + * @mstb: The &struct drm_dp_mst_branch to decrement the malloc refcount of + * + * Decrements &drm_dp_mst_branch.malloc_kref. When + * &drm_dp_mst_branch.malloc_kref reaches 0, the memory allocation for @mstb + * will be released and @mstb may no longer be used. + * + * See also: drm_dp_mst_get_mstb_malloc() + */ +static void +drm_dp_mst_put_mstb_malloc(struct drm_dp_mst_branch *mstb) +{ + DRM_DEBUG("mstb %p (%d)\n", mstb, kref_read(&mstb->malloc_kref) - 1); + kref_put(&mstb->malloc_kref, drm_dp_free_mst_branch_device); +} + +static void drm_dp_free_mst_port(struct kref *kref) +{ + struct drm_dp_mst_port *port = + container_of(kref, struct drm_dp_mst_port, malloc_kref); + + drm_dp_mst_put_mstb_malloc(port->parent); + kfree(port); +} + +/** + * drm_dp_mst_get_port_malloc() - Increment the malloc refcount of an MST port + * @port: The &struct drm_dp_mst_port to increment the malloc refcount of + * + * Increments &drm_dp_mst_port.malloc_kref. When &drm_dp_mst_port.malloc_kref + * reaches 0, the memory allocation for @port will be released and @port may + * no longer be used. + * + * Because @port could potentially be freed at any time by the DP MST helpers + * if &drm_dp_mst_port.malloc_kref reaches 0, including during a call to this + * function, drivers that which to make use of &struct drm_dp_mst_port should + * ensure that they grab at least one main malloc reference to their MST ports + * in &drm_dp_mst_topology_cbs.add_connector. This callback is called before + * there is any chance for &drm_dp_mst_port.malloc_kref to reach 0. + * + * See also: drm_dp_mst_put_port_malloc() + */ +void +drm_dp_mst_get_port_malloc(struct drm_dp_mst_port *port) +{ + kref_get(&port->malloc_kref); + DRM_DEBUG("port %p (%d)\n", port, kref_read(&port->malloc_kref)); +} +EXPORT_SYMBOL(drm_dp_mst_get_port_malloc); + +/** + * drm_dp_mst_put_port_malloc() - Decrement the malloc refcount of an MST port + * @port: The &struct drm_dp_mst_port to decrement the malloc refcount of + * + * Decrements &drm_dp_mst_port.malloc_kref. When &drm_dp_mst_port.malloc_kref + * reaches 0, the memory allocation for @port will be released and @port may + * no longer be used. + * + * See also: drm_dp_mst_get_port_malloc() + */ +void +drm_dp_mst_put_port_malloc(struct drm_dp_mst_port *port) +{ + DRM_DEBUG("port %p (%d)\n", port, kref_read(&port->malloc_kref) - 1); + kref_put(&port->malloc_kref, drm_dp_free_mst_port); +} +EXPORT_SYMBOL(drm_dp_mst_put_port_malloc); + static void drm_dp_destroy_mst_branch_device(struct kref *kref) { - struct drm_dp_mst_branch *mstb = container_of(kref, struct drm_dp_mst_branch, kref); + struct drm_dp_mst_branch *mstb = + container_of(kref, struct drm_dp_mst_branch, topology_kref); + struct drm_dp_mst_topology_mgr *mgr = mstb->mgr; struct drm_dp_mst_port *port, *tmp; bool wake_tx = false; - /* - * init kref again to be used by ports to remove mst branch when it is - * not needed anymore - */ - kref_init(kref); - - if (mstb->port_parent && list_empty(&mstb->port_parent->next)) - kref_get(&mstb->port_parent->kref); - - /* - * destroy all ports - don't need lock - * as there are no more references to the mst branch - * device at this point. - */ + mutex_lock(&mgr->lock); list_for_each_entry_safe(port, tmp, &mstb->ports, next) { list_del(&port->next); drm_dp_mst_topology_put_port(port); } + mutex_unlock(&mgr->lock); /* drop any tx slots msg */ mutex_lock(&mstb->mgr->qlock); @@ -908,14 +1074,83 @@ static void drm_dp_destroy_mst_branch_device(struct kref *kref) if (wake_tx) wake_up_all(&mstb->mgr->tx_waitq); - kref_put(kref, drm_dp_free_mst_branch_device); + drm_dp_mst_put_mstb_malloc(mstb); } -static void drm_dp_mst_topology_put_mstb(struct drm_dp_mst_branch *mstb) +/** + * drm_dp_mst_topology_try_get_mstb() - Increment the topology refcount of a + * branch device unless its zero + * @mstb: &struct drm_dp_mst_branch to increment the topology refcount of + * + * Attempts to grab a topology reference to @mstb, if it hasn't yet been + * removed from the topology (e.g. &drm_dp_mst_branch.topology_kref has + * reached 0). Holding a topology reference implies that a malloc reference + * will be held to @mstb as long as the user holds the topology reference. + * + * Care should be taken to ensure that the user has at least one malloc + * reference to @mstb. If you already have a topology reference to @mstb, you + * should use drm_dp_mst_topology_get_mstb() instead. + * + * See also: + * drm_dp_mst_topology_get_mstb() + * drm_dp_mst_topology_put_mstb() + * + * Returns: + * * 1: A topology reference was grabbed successfully + * * 0: @port is no longer in the topology, no reference was grabbed + */ +static int __must_check +drm_dp_mst_topology_try_get_mstb(struct drm_dp_mst_branch *mstb) { - kref_put(&mstb->kref, drm_dp_destroy_mst_branch_device); + int ret = kref_get_unless_zero(&mstb->topology_kref); + + if (ret) + DRM_DEBUG("mstb %p (%d)\n", mstb, + kref_read(&mstb->topology_kref)); + + return ret; } +/** + * drm_dp_mst_topology_get_mstb() - Increment the topology refcount of a + * branch device + * @mstb: The &struct drm_dp_mst_branch to increment the topology refcount of + * + * Increments &drm_dp_mst_branch.topology_refcount without checking whether or + * not it's already reached 0. This is only valid to use in scenarios where + * you are already guaranteed to have at least one active topology reference + * to @mstb. Otherwise, drm_dp_mst_topology_try_get_mstb() must be used. + * + * See also: + * drm_dp_mst_topology_try_get_mstb() + * drm_dp_mst_topology_put_mstb() + */ +static void drm_dp_mst_topology_get_mstb(struct drm_dp_mst_branch *mstb) +{ + WARN_ON(kref_read(&mstb->topology_kref) == 0); + kref_get(&mstb->topology_kref); + DRM_DEBUG("mstb %p (%d)\n", mstb, kref_read(&mstb->topology_kref)); +} + +/** + * drm_dp_mst_topology_put_mstb() - release a topology reference to a branch + * device + * @mstb: The &struct drm_dp_mst_branch to release the topology reference from + * + * Releases a topology reference from @mstb by decrementing + * &drm_dp_mst_branch.topology_kref. + * + * See also: + * drm_dp_mst_topology_try_get_mstb() + * drm_dp_mst_topology_get_mstb() + */ +static void +drm_dp_mst_topology_put_mstb(struct drm_dp_mst_branch *mstb) +{ + DRM_DEBUG("mstb %p (%d)\n", + mstb, kref_read(&mstb->topology_kref) - 1); + kref_put(&mstb->topology_kref, drm_dp_destroy_mst_branch_device); +} static void drm_dp_port_teardown_pdt(struct drm_dp_mst_port *port, int old_pdt) { @@ -937,7 +1172,8 @@ static void drm_dp_port_teardown_pdt(struct drm_dp_mst_port *port, int old_pdt) static void drm_dp_destroy_port(struct kref *kref) { - struct drm_dp_mst_port *port = container_of(kref, struct drm_dp_mst_port, kref); + struct drm_dp_mst_port *port = + container_of(kref, struct drm_dp_mst_port, topology_kref); struct drm_dp_mst_topology_mgr *mgr = port->mgr; if (!port->input) { @@ -956,7 +1192,6 @@ static void drm_dp_destroy_port(struct kref *kref) * from an EDID retrieval */ mutex_lock(&mgr->destroy_connector_lock); - kref_get(&port->parent->kref); list_add(&port->next, &mgr->destroy_connector_list); mutex_unlock(&mgr->destroy_connector_lock); schedule_work(&mgr->destroy_connector_work); @@ -967,12 +1202,79 @@ static void drm_dp_destroy_port(struct kref *kref) drm_dp_port_teardown_pdt(port, port->pdt); port->pdt = DP_PEER_DEVICE_NONE; } - kfree(port); + drm_dp_mst_put_port_malloc(port); +} + +/** + * drm_dp_mst_topology_try_get_port() - Increment the topology refcount of a + * port unless its zero + * @port: &struct drm_dp_mst_port to increment the topology refcount of + * + * Attempts to grab a topology reference to @port, if it hasn't yet been + * removed from the topology (e.g. &drm_dp_mst_port.topology_kref has reached + * 0). Holding a topology reference implies that a malloc reference will be + * held to @port as long as the user holds the topology reference. + * + * Care should be taken to ensure that the user has at least one malloc + * reference to @port. If you already have a topology reference to @port, you + * should use drm_dp_mst_topology_get_port() instead. + * + * See also: + * drm_dp_mst_topology_get_port() + * drm_dp_mst_topology_put_port() + * + * Returns: + * * 1: A topology reference was grabbed successfully + * * 0: @port is no longer in the topology, no reference was grabbed + */ +static int __must_check +drm_dp_mst_topology_try_get_port(struct drm_dp_mst_port *port) +{ + int ret = kref_get_unless_zero(&port->topology_kref); + + if (ret) + DRM_DEBUG("port %p (%d)\n", port, + kref_read(&port->topology_kref)); + + return ret; } +/** + * drm_dp_mst_topology_get_port() - Increment the topology refcount of a port + * @port: The &struct drm_dp_mst_port to increment the topology refcount of + * + * Increments &drm_dp_mst_port.topology_refcount without checking whether or + * not it's already reached 0. This is only valid to use in scenarios where + * you are already guaranteed to have at least one active topology reference + * to @port. Otherwise, drm_dp_mst_topology_try_get_port() must be used. + * + * See also: + * drm_dp_mst_topology_try_get_port() + * drm_dp_mst_topology_put_port() + */ +static void drm_dp_mst_topology_get_port(struct drm_dp_mst_port *port) +{ + WARN_ON(kref_read(&port->topology_kref) == 0); + kref_get(&port->topology_kref); + DRM_DEBUG("port %p (%d)\n", port, kref_read(&port->topology_kref)); +} + +/** + * drm_dp_mst_topology_put_port() - release a topology reference to a port + * @port: The &struct drm_dp_mst_port to release the topology reference from + * + * Releases a topology reference from @port by decrementing + * &drm_dp_mst_port.topology_kref. + * + * See also: + * drm_dp_mst_topology_try_get_port() + * drm_dp_mst_topology_get_port() + */ static void drm_dp_mst_topology_put_port(struct drm_dp_mst_port *port) { - kref_put(&port->kref, drm_dp_destroy_port); + DRM_DEBUG("port %p (%d)\n", + port, kref_read(&port->topology_kref) - 1); + kref_put(&port->topology_kref, drm_dp_destroy_port); } static struct drm_dp_mst_branch * @@ -981,10 +1283,10 @@ drm_dp_mst_topology_get_mstb_validated_locked(struct drm_dp_mst_branch *mstb, { struct drm_dp_mst_port *port; struct drm_dp_mst_branch *rmstb; - if (to_find == mstb) { - kref_get(&mstb->kref); + + if (to_find == mstb) return mstb; - } + list_for_each_entry(port, &mstb->ports, next) { if (port->mstb) { rmstb = drm_dp_mst_topology_get_mstb_validated_locked( @@ -1001,25 +1303,32 @@ drm_dp_mst_topology_get_mstb_validated(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_branch *mstb) { struct drm_dp_mst_branch *rmstb = NULL; + mutex_lock(&mgr->lock); - if (mgr->mst_primary) + if (mgr->mst_primary) { rmstb = drm_dp_mst_topology_get_mstb_validated_locked( mgr->mst_primary, mstb); + + if (rmstb && !drm_dp_mst_topology_try_get_mstb(rmstb)) + rmstb = NULL; + } mutex_unlock(&mgr->lock); return rmstb; } -static struct drm_dp_mst_port *drm_dp_mst_get_port_ref_locked(struct drm_dp_mst_branch *mstb, struct drm_dp_mst_port *to_find) +static struct drm_dp_mst_port * +drm_dp_mst_topology_get_port_validated_locked(struct drm_dp_mst_branch *mstb, + struct drm_dp_mst_port *to_find) { struct drm_dp_mst_port *port, *mport; list_for_each_entry(port, &mstb->ports, next) { - if (port == to_find) { - kref_get(&port->kref); + if (port == to_find) return port; - } + if (port->mstb) { - mport = drm_dp_mst_get_port_ref_locked(port->mstb, to_find); + mport = drm_dp_mst_topology_get_port_validated_locked( + port->mstb, to_find); if (mport) return mport; } @@ -1032,9 +1341,15 @@ drm_dp_mst_topology_get_port_validated(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port) { struct drm_dp_mst_port *rport = NULL; + mutex_lock(&mgr->lock); - if (mgr->mst_primary) - rport = drm_dp_mst_get_port_ref_locked(mgr->mst_primary, port); + if (mgr->mst_primary) { + rport = drm_dp_mst_topology_get_port_validated_locked( + mgr->mst_primary, port); + + if (rport && !drm_dp_mst_topology_try_get_port(rport)) + rport = NULL; + } mutex_unlock(&mgr->lock); return rport; } @@ -1042,11 +1357,12 @@ drm_dp_mst_topology_get_port_validated(struct drm_dp_mst_topology_mgr *mgr, static struct drm_dp_mst_port *drm_dp_get_port(struct drm_dp_mst_branch *mstb, u8 port_num) { struct drm_dp_mst_port *port; + int ret; list_for_each_entry(port, &mstb->ports, next) { if (port->port_num == port_num) { - kref_get(&port->kref); - return port; + ret = drm_dp_mst_topology_try_get_port(port); + return ret ? port : NULL; } } @@ -1095,6 +1411,11 @@ static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port) if (port->mstb) { port->mstb->mgr = port->mgr; port->mstb->port_parent = port; + /* + * Make sure this port's memory allocation stays + * around until it's child MSTB releases it + */ + drm_dp_mst_get_port_malloc(port); send_link = true; } @@ -1155,17 +1476,26 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, bool created = false; int old_pdt = 0; int old_ddps = 0; + port = drm_dp_get_port(mstb, port_msg->port_number); if (!port) { port = kzalloc(sizeof(*port), GFP_KERNEL); if (!port) return; - kref_init(&port->kref); + kref_init(&port->topology_kref); + kref_init(&port->malloc_kref); port->parent = mstb; port->port_num = port_msg->port_number; port->mgr = mstb->mgr; port->aux.name = "DPMST"; port->aux.dev = dev->dev; + + /* + * Make sure the memory allocation for our parent branch stays + * around until our own memory allocation is released + */ + drm_dp_mst_get_mstb_malloc(mstb); + created = true; } else { old_pdt = port->pdt; @@ -1185,7 +1515,7 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, for this list */ if (created) { mutex_lock(&mstb->mgr->lock); - kref_get(&port->kref); + drm_dp_mst_topology_get_port(port); list_add(&port->next, &mstb->ports); mutex_unlock(&mstb->mgr->lock); } @@ -1284,7 +1614,7 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_ { struct drm_dp_mst_branch *mstb; struct drm_dp_mst_port *port; - int i; + int i, ret; /* find the port by iterating down */ mutex_lock(&mgr->lock); @@ -1309,7 +1639,9 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_ } } } - kref_get(&mstb->kref); + ret = drm_dp_mst_topology_try_get_mstb(mstb); + if (!ret) + mstb = NULL; out: mutex_unlock(&mgr->lock); return mstb; @@ -1344,14 +1676,17 @@ drm_dp_get_mst_branch_device_by_guid(struct drm_dp_mst_topology_mgr *mgr, uint8_t *guid) { struct drm_dp_mst_branch *mstb; + int ret; /* find the port by iterating down */ mutex_lock(&mgr->lock); mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid); - - if (mstb) - kref_get(&mstb->kref); + if (mstb) { + ret = drm_dp_mst_topology_try_get_mstb(mstb); + if (!ret) + mstb = NULL; + } mutex_unlock(&mgr->lock); return mstb; @@ -1390,11 +1725,14 @@ static void drm_dp_mst_link_probe_work(struct work_struct *work) { struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, work); struct drm_dp_mst_branch *mstb; + int ret; mutex_lock(&mgr->lock); mstb = mgr->mst_primary; if (mstb) { - kref_get(&mstb->kref); + ret = drm_dp_mst_topology_try_get_mstb(mstb); + if (!ret) + mstb = NULL; } mutex_unlock(&mgr->lock); if (mstb) { @@ -1722,8 +2060,10 @@ static struct drm_dp_mst_branch *drm_dp_get_last_connected_port_and_mstb(struct if (found_port) { rmstb = found_port->parent; - kref_get(&rmstb->kref); - *port_num = found_port->port_num; + if (drm_dp_mst_topology_try_get_mstb(rmstb)) + *port_num = found_port->port_num; + else + rmstb = NULL; } } mutex_unlock(&mgr->lock); @@ -2176,7 +2516,7 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms /* give this the main reference */ mgr->mst_primary = mstb; - kref_get(&mgr->mst_primary->kref); + drm_dp_mst_topology_get_mstb(mgr->mst_primary); ret = drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL, DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC); @@ -3096,13 +3436,6 @@ static void drm_dp_tx_work(struct work_struct *work) mutex_unlock(&mgr->qlock); } -static void drm_dp_free_mst_port(struct kref *kref) -{ - struct drm_dp_mst_port *port = container_of(kref, struct drm_dp_mst_port, kref); - kref_put(&port->parent->kref, drm_dp_free_mst_branch_device); - kfree(port); -} - static void drm_dp_destroy_connector_work(struct work_struct *work) { struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, destroy_connector_work); @@ -3123,7 +3456,6 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) list_del(&port->next); mutex_unlock(&mgr->destroy_connector_lock); - kref_init(&port->kref); INIT_LIST_HEAD(&port->next); mgr->cbs->destroy_connector(mgr, port->connector); @@ -3137,7 +3469,7 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); } - kref_put(&port->kref, drm_dp_free_mst_port); + drm_dp_mst_put_port_malloc(port); send_hotplug = true; } if (send_hotplug) diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index 371cc2816477..8eca5f29242c 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -44,7 +44,6 @@ struct drm_dp_vcpi { /** * struct drm_dp_mst_port - MST port - * @kref: reference count for this port. * @port_num: port number * @input: if this port is an input port. * @mcs: message capability status - DP 1.2 spec. @@ -67,7 +66,18 @@ struct drm_dp_vcpi { * in the MST topology. */ struct drm_dp_mst_port { - struct kref kref; + /** + * @topology_kref: refcount for this port's lifetime in the topology, + * only the DP MST helpers should need to touch this + */ + struct kref topology_kref; + + /** + * @malloc_kref: refcount for the memory allocation containing this + * structure. See drm_dp_mst_get_port_malloc() and + * drm_dp_mst_put_port_malloc(). + */ + struct kref malloc_kref; u8 port_num; bool input; @@ -102,7 +112,6 @@ struct drm_dp_mst_port { /** * struct drm_dp_mst_branch - MST branch device. - * @kref: reference count for this port. * @rad: Relative Address to talk to this branch device. * @lct: Link count total to talk to this branch device. * @num_ports: number of ports on the branch. @@ -121,7 +130,19 @@ struct drm_dp_mst_port { * to downstream port of parent branches. */ struct drm_dp_mst_branch { - struct kref kref; + /** + * @topology_kref: refcount for this branch device's lifetime in the + * topology, only the DP MST helpers should need to touch this + */ + struct kref topology_kref; + + /** + * @malloc_kref: refcount for the memory allocation containing this + * structure. See drm_dp_mst_get_mstb_malloc() and + * drm_dp_mst_put_mstb_malloc(). + */ + struct kref malloc_kref; + u8 rad[8]; u8 lct; int num_ports; @@ -626,4 +647,7 @@ int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, bool power_up); +void drm_dp_mst_get_port_malloc(struct drm_dp_mst_port *port); +void drm_dp_mst_put_port_malloc(struct drm_dp_mst_port *port); + #endif -- cgit v1.2.3-71-gd317 From bea5c38f1eb66982d9506ece9d7a3941f339ac10 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Thu, 10 Jan 2019 19:53:40 -0500 Subject: drm/dp_mst: Add some atomic state iterator macros Changes since v6: - Move EXPORT_SYMBOL() for drm_dp_mst_topology_state_funcs to this commit - Document __drm_dp_mst_state_iter_get() and note that it shouldn't be called directly Signed-off-by: Lyude Paul Reviewed-by: Daniel Vetter Cc: David Airlie Cc: Jerry Zuo Cc: Harry Wentland Cc: Juston Li Link: https://patchwork.freedesktop.org/patch/msgid/20190111005343.17443-18-lyude@redhat.com --- drivers/gpu/drm/drm_dp_mst_topology.c | 5 +- include/drm/drm_dp_mst_helper.h | 96 +++++++++++++++++++++++++++++++++++ 2 files changed, 99 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index b5976f8c318c..e3497bc49494 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -3521,10 +3521,11 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, kfree(mst_state); } -static const struct drm_private_state_funcs mst_state_funcs = { +const struct drm_private_state_funcs drm_dp_mst_topology_state_funcs = { .atomic_duplicate_state = drm_dp_mst_duplicate_state, .atomic_destroy_state = drm_dp_mst_destroy_state, }; +EXPORT_SYMBOL(drm_dp_mst_topology_state_funcs); /** * drm_atomic_get_mst_topology_state: get MST topology state @@ -3608,7 +3609,7 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, drm_atomic_private_obj_init(dev, &mgr->base, &mst_state->base, - &mst_state_funcs); + &drm_dp_mst_topology_state_funcs); return 0; } diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index 8eca5f29242c..581163c8d7d7 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -650,4 +650,100 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, void drm_dp_mst_get_port_malloc(struct drm_dp_mst_port *port); void drm_dp_mst_put_port_malloc(struct drm_dp_mst_port *port); +extern const struct drm_private_state_funcs drm_dp_mst_topology_state_funcs; + +/** + * __drm_dp_mst_state_iter_get - private atomic state iterator function for + * macro-internal use + * @state: &struct drm_atomic_state pointer + * @mgr: pointer to the &struct drm_dp_mst_topology_mgr iteration cursor + * @old_state: optional pointer to the old &struct drm_dp_mst_topology_state + * iteration cursor + * @new_state: optional pointer to the new &struct drm_dp_mst_topology_state + * iteration cursor + * @i: int iteration cursor, for macro-internal use + * + * Used by for_each_oldnew_mst_mgr_in_state(), + * for_each_old_mst_mgr_in_state(), and for_each_new_mst_mgr_in_state(). Don't + * call this directly. + * + * Returns: + * True if the current &struct drm_private_obj is a &struct + * drm_dp_mst_topology_mgr, false otherwise. + */ +static inline bool +__drm_dp_mst_state_iter_get(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr **mgr, + struct drm_dp_mst_topology_state **old_state, + struct drm_dp_mst_topology_state **new_state, + int i) +{ + struct __drm_private_objs_state *objs_state = &state->private_objs[i]; + + if (objs_state->ptr->funcs != &drm_dp_mst_topology_state_funcs) + return false; + + *mgr = to_dp_mst_topology_mgr(objs_state->ptr); + if (old_state) + *old_state = to_dp_mst_topology_state(objs_state->old_state); + if (new_state) + *new_state = to_dp_mst_topology_state(objs_state->new_state); + + return true; +} + +/** + * for_each_oldnew_mst_mgr_in_state - iterate over all DP MST topology + * managers in an atomic update + * @__state: &struct drm_atomic_state pointer + * @mgr: &struct drm_dp_mst_topology_mgr iteration cursor + * @old_state: &struct drm_dp_mst_topology_state iteration cursor for the old + * state + * @new_state: &struct drm_dp_mst_topology_state iteration cursor for the new + * state + * @__i: int iteration cursor, for macro-internal use + * + * This iterates over all DRM DP MST topology managers in an atomic update, + * tracking both old and new state. This is useful in places where the state + * delta needs to be considered, for example in atomic check functions. + */ +#define for_each_oldnew_mst_mgr_in_state(__state, mgr, old_state, new_state, __i) \ + for ((__i) = 0; (__i) < (__state)->num_private_objs; (__i)++) \ + for_each_if(__drm_dp_mst_state_iter_get((__state), &(mgr), &(old_state), &(new_state), (__i))) + +/** + * for_each_old_mst_mgr_in_state - iterate over all DP MST topology managers + * in an atomic update + * @__state: &struct drm_atomic_state pointer + * @mgr: &struct drm_dp_mst_topology_mgr iteration cursor + * @old_state: &struct drm_dp_mst_topology_state iteration cursor for the old + * state + * @__i: int iteration cursor, for macro-internal use + * + * This iterates over all DRM DP MST topology managers in an atomic update, + * tracking only the old state. This is useful in disable functions, where we + * need the old state the hardware is still in. + */ +#define for_each_old_mst_mgr_in_state(__state, mgr, old_state, __i) \ + for ((__i) = 0; (__i) < (__state)->num_private_objs; (__i)++) \ + for_each_if(__drm_dp_mst_state_iter_get((__state), &(mgr), &(old_state), NULL, (__i))) + +/** + * for_each_new_mst_mgr_in_state - iterate over all DP MST topology managers + * in an atomic update + * @__state: &struct drm_atomic_state pointer + * @mgr: &struct drm_dp_mst_topology_mgr iteration cursor + * @new_state: &struct drm_dp_mst_topology_state iteration cursor for the new + * state + * @__i: int iteration cursor, for macro-internal use + * + * This iterates over all DRM DP MST topology managers in an atomic update, + * tracking only the new state. This is useful in enable functions, where we + * need the new state the hardware should be in when the atomic commit + * operation has completed. + */ +#define for_each_new_mst_mgr_in_state(__state, mgr, new_state, __i) \ + for ((__i) = 0; (__i) < (__state)->num_private_objs; (__i)++) \ + for_each_if(__drm_dp_mst_state_iter_get((__state), &(mgr), NULL, &(new_state), (__i))) + #endif -- cgit v1.2.3-71-gd317 From eceae147246749c6dbaeefda802b30f804a3c54c Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Thu, 10 Jan 2019 19:53:41 -0500 Subject: drm/dp_mst: Start tracking per-port VCPI allocations There has been a TODO waiting for quite a long time in drm_dp_mst_topology.c: /* We cannot rely on port->vcpi.num_slots to update * topology_state->avail_slots as the port may not exist if the parent * branch device was unplugged. This should be fixed by tracking * per-port slot allocation in drm_dp_mst_topology_state instead of * depending on the caller to tell us how many slots to release. */ That's not the only reason we should fix this: forcing the driver to track the VCPI allocations throughout a state's atomic check is error prone, because it means that extra care has to be taken with the order that drm_dp_atomic_find_vcpi_slots() and drm_dp_atomic_release_vcpi_slots() are called in in order to ensure idempotency. Currently the only driver actually using these helpers, i915, doesn't even do this correctly: multiple ->best_encoder() checks with i915's current implementation would not be idempotent and would over-allocate VCPI slots, something I learned trying to implement fallback retraining in MST. So: simplify this whole mess, and teach drm_dp_atomic_find_vcpi_slots() and drm_dp_atomic_release_vcpi_slots() to track the VCPI allocations for each port. This allows us to ensure idempotency without having to rely on the driver as much. Additionally: the driver doesn't need to do any kind of VCPI slot tracking anymore if it doesn't need it for it's own internal state. Additionally; this adds a new drm_dp_mst_atomic_check() helper which must be used by atomic drivers to perform validity checks for the new VCPI allocations incurred by a state. Also: update the documentation and make it more obvious that these /must/ be called by /all/ atomic drivers supporting MST. Changes since v9: * Add some missing changes that were requested by danvet that I forgot about after I redid all of the kref stuff: * Remove unnecessary state changes in intel_dp_mst_atomic_check * Cleanup atomic check logic for VCPI allocations - all we need to check in compute_config is whether or not this state disables a CRTC, then free VCPI based off that Changes since v8: * Fix compile errors, whoops! Changes since v7: - Don't check for mixed stale/valid VCPI allocations, just rely on connector registration to stop such erroneous modesets Changes since v6: - Keep a kref to all of the ports we have allocations on. This required a good bit of changing to when we call drm_dp_find_vcpi_slots(), mainly that we need to ensure that we only redo VCPI allocations on actual mode or CRTC changes, not crtc_state->active changes. Additionally, we no longer take the registration of the DRM connector for each port into account because so long as we have a kref to the port in the new or previous atomic state, the connector will stay registered. - Use the small changes to drm_dp_put_port() to add even more error checking to make misusage of the helpers more obvious. I added this after having to chase down various use-after-free conditions that started popping up from the new helpers so no one else has to troubleshoot that. - Move some accidental DRM_DEBUG_KMS() calls to DRM_DEBUG_ATOMIC() - Update documentation again, note that find/release() should both not be called on the same port in a single atomic check phase (but multiple calls to one or the other is OK) Changes since v4: - Don't skip the atomic checks for VCPI allocations if no new VCPI allocations happen in a state. This makes the next change I'm about to list here a lot easier to implement. - Don't ignore VCPI allocations on destroyed ports, instead ensure that when ports are destroyed and still have VCPI allocations in the topology state, the only state changes allowed are releasing said ports' VCPI. This prevents a state with a mix of VCPI allocations from destroyed ports, and allocations from valid ports. Changes since v3: - Don't release VCPI allocations in the topology state immediately in drm_dp_atomic_release_vcpi_slots(), instead mark them as 0 and skip over them in drm_dp_mst_duplicate_state(). This makes it so drm_dp_atomic_release_vcpi_slots() is still idempotent while also throwing warnings if the driver messes up it's book keeping and tries to release VCPI slots on a port that doesn't have any pre-existing VCPI allocation - danvet - Change mst_state/state in some debugging messages to "mst state" Changes since v2: - Use kmemdup() for duplicating MST state - danvet - Move port validation out of duplicate state callback - danvet - Handle looping through MST topology states in drm_dp_mst_atomic_check() so the driver doesn't have to do it - Fix documentation in drm_dp_atomic_find_vcpi_slots() - Move the atomic check for each individual topology state into it's own function, reduces indenting - Don't consider "stale" MST ports when calculating the bandwidth requirements. This is needed because originally we relied on the state duplication functions to prune any stale ports from the new state, which would prevent us from incorrectly considering their bandwidth requirements alongside legitimate new payloads. - Add function references in drm_dp_atomic_release_vcpi_slots() - danvet - Annotate atomic VCPI and atomic check functions with __must_check - danvet Changes since v1: - Don't use the now-removed ->atomic_check() for private objects hook, just give drivers a function to call themselves Signed-off-by: Lyude Paul Reviewed-by: Daniel Vetter Cc: David Airlie Cc: Jerry Zuo Cc: Harry Wentland Cc: Juston Li Link: https://patchwork.freedesktop.org/patch/msgid/20190111005343.17443-19-lyude@redhat.com --- drivers/gpu/drm/drm_dp_mst_topology.c | 247 +++++++++++++++++++++++++++++----- drivers/gpu/drm/i915/intel_display.c | 4 + drivers/gpu/drm/i915/intel_dp_mst.c | 54 ++++---- include/drm/drm_dp_mst_helper.h | 23 +++- 4 files changed, 266 insertions(+), 62 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index e3497bc49494..88db6d7e1a36 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -3011,21 +3011,42 @@ static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr, } /** - * drm_dp_atomic_find_vcpi_slots() - Find and add vcpi slots to the state + * drm_dp_atomic_find_vcpi_slots() - Find and add VCPI slots to the state * @state: global atomic state * @mgr: MST topology manager for the port * @port: port to find vcpi slots for * @pbn: bandwidth required for the mode in PBN * - * RETURNS: - * Total slots in the atomic state assigned for this port or error + * Allocates VCPI slots to @port, replacing any previous VCPI allocations it + * may have had. Any atomic drivers which support MST must call this function + * in their &drm_encoder_helper_funcs.atomic_check() callback to change the + * current VCPI allocation for the new state, but only when + * &drm_crtc_state.mode_changed or &drm_crtc_state.connectors_changed is set + * to ensure compatibility with userspace applications that still use the + * legacy modesetting UAPI. + * + * Allocations set by this function are not checked against the bandwidth + * restraints of @mgr until the driver calls drm_dp_mst_atomic_check(). + * + * Additionally, it is OK to call this function multiple times on the same + * @port as needed. It is not OK however, to call this function and + * drm_dp_atomic_release_vcpi_slots() in the same atomic check phase. + * + * See also: + * drm_dp_atomic_release_vcpi_slots() + * drm_dp_mst_atomic_check() + * + * Returns: + * Total slots in the atomic state assigned for this port, or a negative error + * code if the port no longer exists */ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int pbn) { struct drm_dp_mst_topology_state *topology_state; - int req_slots; + struct drm_dp_vcpi_allocation *pos, *vcpi = NULL; + int prev_slots, req_slots, ret; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) @@ -3034,20 +3055,54 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, port = drm_dp_mst_topology_get_port_validated(mgr, port); if (port == NULL) return -EINVAL; - req_slots = DIV_ROUND_UP(pbn, mgr->pbn_div); - DRM_DEBUG_KMS("vcpi slots req=%d, avail=%d\n", - req_slots, topology_state->avail_slots); - if (req_slots > topology_state->avail_slots) { - drm_dp_mst_topology_put_port(port); - return -ENOSPC; + /* Find the current allocation for this port, if any */ + list_for_each_entry(pos, &topology_state->vcpis, next) { + if (pos->port == port) { + vcpi = pos; + prev_slots = vcpi->vcpi; + + /* + * This should never happen, unless the driver tries + * releasing and allocating the same VCPI allocation, + * which is an error + */ + if (WARN_ON(!prev_slots)) { + DRM_ERROR("cannot allocate and release VCPI on [MST PORT:%p] in the same state\n", + port); + return -EINVAL; + } + + break; + } } + if (!vcpi) + prev_slots = 0; + + req_slots = DIV_ROUND_UP(pbn, mgr->pbn_div); + + DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] [MST PORT:%p] VCPI %d -> %d\n", + port->connector->base.id, port->connector->name, + port, prev_slots, req_slots); + + /* Add the new allocation to the state */ + if (!vcpi) { + vcpi = kzalloc(sizeof(*vcpi), GFP_KERNEL); + if (!vcpi) { + ret = -ENOMEM; + goto out; + } - topology_state->avail_slots -= req_slots; - DRM_DEBUG_KMS("vcpi slots avail=%d", topology_state->avail_slots); + drm_dp_mst_get_port_malloc(port); + vcpi->port = port; + list_add(&vcpi->next, &topology_state->vcpis); + } + vcpi->vcpi = req_slots; + ret = req_slots; +out: drm_dp_mst_topology_put_port(port); - return req_slots; + return ret; } EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots); @@ -3055,31 +3110,57 @@ EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots); * drm_dp_atomic_release_vcpi_slots() - Release allocated vcpi slots * @state: global atomic state * @mgr: MST topology manager for the port - * @slots: number of vcpi slots to release + * @port: The port to release the VCPI slots from * - * RETURNS: - * 0 if @slots were added back to &drm_dp_mst_topology_state->avail_slots or - * negative error code + * Releases any VCPI slots that have been allocated to a port in the atomic + * state. Any atomic drivers which support MST must call this function in + * their &drm_connector_helper_funcs.atomic_check() callback when the + * connector will no longer have VCPI allocated (e.g. because it's CRTC was + * removed) when it had VCPI allocated in the previous atomic state. + * + * It is OK to call this even if @port has been removed from the system. + * Additionally, it is OK to call this function multiple times on the same + * @port as needed. It is not OK however, to call this function and + * drm_dp_atomic_find_vcpi_slots() on the same @port in a single atomic check + * phase. + * + * See also: + * drm_dp_atomic_find_vcpi_slots() + * drm_dp_mst_atomic_check() + * + * Returns: + * 0 if all slots for this port were added back to + * &drm_dp_mst_topology_state.avail_slots or negative error code */ int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, - int slots) + struct drm_dp_mst_port *port) { struct drm_dp_mst_topology_state *topology_state; + struct drm_dp_vcpi_allocation *pos; + bool found = false; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); - /* We cannot rely on port->vcpi.num_slots to update - * topology_state->avail_slots as the port may not exist if the parent - * branch device was unplugged. This should be fixed by tracking - * per-port slot allocation in drm_dp_mst_topology_state instead of - * depending on the caller to tell us how many slots to release. - */ - topology_state->avail_slots += slots; - DRM_DEBUG_KMS("vcpi slots released=%d, avail=%d\n", - slots, topology_state->avail_slots); + list_for_each_entry(pos, &topology_state->vcpis, next) { + if (pos->port == port) { + found = true; + break; + } + } + if (WARN_ON(!found)) { + DRM_ERROR("no VCPI for [MST PORT:%p] found in mst state %p\n", + port, &topology_state->base); + return -EINVAL; + } + + DRM_DEBUG_ATOMIC("[MST PORT:%p] VCPI %d -> 0\n", port, pos->vcpi); + if (pos->vcpi) { + drm_dp_mst_put_port_malloc(port); + pos->vcpi = 0; + } return 0; } @@ -3501,15 +3582,41 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) static struct drm_private_state * drm_dp_mst_duplicate_state(struct drm_private_obj *obj) { - struct drm_dp_mst_topology_state *state; + struct drm_dp_mst_topology_state *state, *old_state = + to_dp_mst_topology_state(obj->state); + struct drm_dp_vcpi_allocation *pos, *vcpi; - state = kmemdup(obj->state, sizeof(*state), GFP_KERNEL); + state = kmemdup(old_state, sizeof(*state), GFP_KERNEL); if (!state) return NULL; __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base); + INIT_LIST_HEAD(&state->vcpis); + + list_for_each_entry(pos, &old_state->vcpis, next) { + /* Prune leftover freed VCPI allocations */ + if (!pos->vcpi) + continue; + + vcpi = kmemdup(pos, sizeof(*vcpi), GFP_KERNEL); + if (!vcpi) + goto fail; + + drm_dp_mst_get_port_malloc(vcpi->port); + list_add(&vcpi->next, &state->vcpis); + } + return &state->base; + +fail: + list_for_each_entry_safe(pos, vcpi, &state->vcpis, next) { + drm_dp_mst_put_port_malloc(pos->port); + kfree(pos); + } + kfree(state); + + return NULL; } static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, @@ -3517,10 +3624,88 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, { struct drm_dp_mst_topology_state *mst_state = to_dp_mst_topology_state(state); + struct drm_dp_vcpi_allocation *pos, *tmp; + + list_for_each_entry_safe(pos, tmp, &mst_state->vcpis, next) { + /* We only keep references to ports with non-zero VCPIs */ + if (pos->vcpi) + drm_dp_mst_put_port_malloc(pos->port); + kfree(pos); + } kfree(mst_state); } +static inline int +drm_dp_mst_atomic_check_topology_state(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_topology_state *mst_state) +{ + struct drm_dp_vcpi_allocation *vcpi; + int avail_slots = 63; + + list_for_each_entry(vcpi, &mst_state->vcpis, next) { + /* Releasing VCPI is always OK-even if the port is gone */ + if (!vcpi->vcpi) { + DRM_DEBUG_ATOMIC("[MST PORT:%p] releases all VCPI slots\n", + vcpi->port); + continue; + } + + DRM_DEBUG_ATOMIC("[MST PORT:%p] requires %d vcpi slots\n", + vcpi->port, vcpi->vcpi); + + avail_slots -= vcpi->vcpi; + if (avail_slots < 0) { + DRM_DEBUG_ATOMIC("[MST PORT:%p] not enough VCPI slots in mst state %p (avail=%d)\n", + vcpi->port, mst_state, + avail_slots + vcpi->vcpi); + return -ENOSPC; + } + } + DRM_DEBUG_ATOMIC("[MST MGR:%p] mst state %p VCPI avail=%d used=%d\n", + mgr, mst_state, avail_slots, + 63 - avail_slots); + + return 0; +} + +/** + * drm_dp_mst_atomic_check - Check that the new state of an MST topology in an + * atomic update is valid + * @state: Pointer to the new &struct drm_dp_mst_topology_state + * + * Checks the given topology state for an atomic update to ensure that it's + * valid. This includes checking whether there's enough bandwidth to support + * the new VCPI allocations in the atomic update. + * + * Any atomic drivers supporting DP MST must make sure to call this after + * checking the rest of their state in their + * &drm_mode_config_funcs.atomic_check() callback. + * + * See also: + * drm_dp_atomic_find_vcpi_slots() + * drm_dp_atomic_release_vcpi_slots() + * + * Returns: + * + * 0 if the new state is valid, negative error code otherwise. + */ +int drm_dp_mst_atomic_check(struct drm_atomic_state *state) +{ + struct drm_dp_mst_topology_mgr *mgr; + struct drm_dp_mst_topology_state *mst_state; + int i, ret = 0; + + for_each_new_mst_mgr_in_state(state, mgr, mst_state, i) { + ret = drm_dp_mst_atomic_check_topology_state(mgr, mst_state); + if (ret) + break; + } + + return ret; +} +EXPORT_SYMBOL(drm_dp_mst_atomic_check); + const struct drm_private_state_funcs drm_dp_mst_topology_state_funcs = { .atomic_duplicate_state = drm_dp_mst_duplicate_state, .atomic_destroy_state = drm_dp_mst_destroy_state, @@ -3603,9 +3788,7 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, return -ENOMEM; mst_state->mgr = mgr; - - /* max. time slots - one slot for MTP header */ - mst_state->avail_slots = 63; + INIT_LIST_HEAD(&mst_state->vcpis); drm_atomic_private_obj_init(dev, &mgr->base, &mst_state->base, diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 812ec5ae5c7b..5a679af03a04 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -12623,6 +12623,10 @@ static int intel_atomic_check(struct drm_device *dev, "[modeset]" : "[fastset]"); } + ret = drm_dp_mst_atomic_check(state); + if (ret) + return ret; + if (any_ms) { ret = intel_modeset_checks(state); diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index 631fd1537252..c8e2215628e6 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -41,8 +41,12 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, struct drm_connector *connector = conn_state->connector; void *port = to_intel_connector(connector)->port; struct drm_atomic_state *state = pipe_config->base.state; + struct drm_crtc *crtc = pipe_config->base.crtc; + struct drm_crtc_state *old_crtc_state = + drm_atomic_get_old_crtc_state(state, crtc); int bpp; - int lane_count, slots = 0; + int lane_count, slots = + to_intel_crtc_state(old_crtc_state)->dp_m_n.tu; const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; int mst_pbn; bool constant_n = drm_dp_has_quirk(&intel_dp->desc, @@ -107,35 +111,39 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, return true; } -static int intel_dp_mst_atomic_check(struct drm_connector *connector, - struct drm_connector_state *new_conn_state) +static int +intel_dp_mst_atomic_check(struct drm_connector *connector, + struct drm_connector_state *new_conn_state) { struct drm_atomic_state *state = new_conn_state->state; - struct drm_connector_state *old_conn_state; - struct drm_crtc *old_crtc; + struct drm_connector_state *old_conn_state = + drm_atomic_get_old_connector_state(state, connector); + struct intel_connector *intel_connector = + to_intel_connector(connector); + struct drm_crtc *new_crtc = new_conn_state->crtc; struct drm_crtc_state *crtc_state; - int slots, ret = 0; + struct drm_dp_mst_topology_mgr *mgr; + int ret = 0; - old_conn_state = drm_atomic_get_old_connector_state(state, connector); - old_crtc = old_conn_state->crtc; - if (!old_crtc) - return ret; - - crtc_state = drm_atomic_get_new_crtc_state(state, old_crtc); - slots = to_intel_crtc_state(crtc_state)->dp_m_n.tu; - if (drm_atomic_crtc_needs_modeset(crtc_state) && slots > 0) { - struct drm_dp_mst_topology_mgr *mgr; - struct drm_encoder *old_encoder; + if (!old_conn_state->crtc) + return 0; - old_encoder = old_conn_state->best_encoder; - mgr = &enc_to_mst(old_encoder)->primary->dp.mst_mgr; + /* We only want to free VCPI if this state disables the CRTC on this + * connector + */ + if (new_crtc) { + crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc); - ret = drm_dp_atomic_release_vcpi_slots(state, mgr, slots); - if (ret) - DRM_DEBUG_KMS("failed releasing %d vcpi slots:%d\n", slots, ret); - else - to_intel_crtc_state(crtc_state)->dp_m_n.tu = 0; + if (!crtc_state || + !drm_atomic_crtc_needs_modeset(crtc_state) || + crtc_state->enable) + return 0; } + + mgr = &enc_to_mst(old_conn_state->best_encoder)->primary->dp.mst_mgr; + ret = drm_dp_atomic_release_vcpi_slots(state, mgr, + intel_connector->port); + return ret; } diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index 581163c8d7d7..451d020f0137 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -425,9 +425,15 @@ struct drm_dp_payload { #define to_dp_mst_topology_state(x) container_of(x, struct drm_dp_mst_topology_state, base) +struct drm_dp_vcpi_allocation { + struct drm_dp_mst_port *port; + int vcpi; + struct list_head next; +}; + struct drm_dp_mst_topology_state { struct drm_private_state base; - int avail_slots; + struct list_head vcpis; struct drm_dp_mst_topology_mgr *mgr; }; @@ -638,14 +644,17 @@ void drm_dp_mst_topology_mgr_suspend(struct drm_dp_mst_topology_mgr *mgr); int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr); struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr); -int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, - struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, int pbn); -int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, - struct drm_dp_mst_topology_mgr *mgr, - int slots); +int __must_check +drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_port *port, int pbn); +int __must_check +drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_port *port); int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, bool power_up); +int __must_check drm_dp_mst_atomic_check(struct drm_atomic_state *state); void drm_dp_mst_get_port_malloc(struct drm_dp_mst_port *port); void drm_dp_mst_put_port_malloc(struct drm_dp_mst_port *port); -- cgit v1.2.3-71-gd317 From 1e9080ac21d182913df404d634a7c847af5e35be Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 17 Dec 2018 20:42:59 +0100 Subject: drm: Unexport drm_crtc_force_disable It's a legacy kms only thing, good to hide it better now that all those old drivers use the legacy crtc helpers directly. Reviewed-by: Alex Deucher Signed-off-by: Daniel Vetter Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Link: https://patchwork.freedesktop.org/patch/msgid/20181217194303.14397-3-daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_crtc.c | 10 ---------- drivers/gpu/drm/drm_crtc_internal.h | 1 + include/drm/drm_crtc.h | 1 - 3 files changed, 1 insertion(+), 11 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 42cdb4181643..e224b9b7d17a 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -93,15 +93,6 @@ struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) } EXPORT_SYMBOL(drm_crtc_from_index); -/** - * drm_crtc_force_disable - Forcibly turn off a CRTC - * @crtc: CRTC to turn off - * - * Note: This should only be used by non-atomic legacy drivers. - * - * Returns: - * Zero on success, error code on failure. - */ int drm_crtc_force_disable(struct drm_crtc *crtc) { struct drm_mode_set set = { @@ -112,7 +103,6 @@ int drm_crtc_force_disable(struct drm_crtc *crtc) return drm_mode_set_config_internal(&set); } -EXPORT_SYMBOL(drm_crtc_force_disable); /** * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 86893448f486..216f2a9ee3d4 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -50,6 +50,7 @@ int drm_crtc_check_viewport(const struct drm_crtc *crtc, const struct drm_framebuffer *fb); int drm_crtc_register_all(struct drm_device *dev); void drm_crtc_unregister_all(struct drm_device *dev); +int drm_crtc_force_disable(struct drm_crtc *crtc); struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index b21437bc95bf..b955ef1f1e3e 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1140,7 +1140,6 @@ static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc) return 1 << drm_crtc_index(crtc); } -int drm_crtc_force_disable(struct drm_crtc *crtc); int drm_crtc_force_disable_all(struct drm_device *dev); int drm_mode_set_config_internal(struct drm_mode_set *set); -- cgit v1.2.3-71-gd317 From 7d0250ed8e69fb6a66caecf60b8753a21224cc1a Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 12 Oct 2018 09:34:41 +0200 Subject: drm/atomic: Add missing () to function ref in kerneldoc Pure drive-by while reading code&docs. Signed-off-by: Daniel Vetter Reviewed-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/20181012073441.21774-1-daniel.vetter@ffwll.ch --- include/drm/drm_atomic.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index cac4a1b6b0e8..811b4a92568f 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -139,9 +139,9 @@ struct drm_crtc_commit { /** * @abort_completion: * - * A flag that's set after drm_atomic_helper_setup_commit takes a second - * reference for the completion of $drm_crtc_state.event. It's used by - * the free code to remove the second reference if commit fails. + * A flag that's set after drm_atomic_helper_setup_commit() takes a + * second reference for the completion of $drm_crtc_state.event. It's + * used by the free code to remove the second reference if commit fails. */ bool abort_completion; }; -- cgit v1.2.3-71-gd317 From 3affaa5a7ca3ca114e01049bc45e3ed4a3955505 Mon Sep 17 00:00:00 2001 From: Brian Starkey Date: Mon, 3 Dec 2018 11:31:57 +0000 Subject: drm/afbc: Add AFBC modifier usage documentation AFBC is a flexible, proprietary, lossless compression protocol and format, with a number of defined DRM format modifiers. To facilitate consistency and compatibility between different AFBC producers and consumers, document the expectations for usage of the AFBC DRM format modifiers in a new .rst chapter. Signed-off-by: Brian Starkey Reviewed-by: Liviu Dudau [Updated MAINTAINERS entry to show that "Mali DP Maintainers" is actually a mailing list and added an SPDX-License-Identifier to the documentation] Signed-off-by: Liviu Dudau --- Documentation/gpu/afbc.rst | 235 ++++++++++++++++++++++++++++++++++++++++++ Documentation/gpu/drivers.rst | 1 + MAINTAINERS | 3 +- include/uapi/drm/drm_fourcc.h | 3 + 4 files changed, 241 insertions(+), 1 deletion(-) create mode 100644 Documentation/gpu/afbc.rst (limited to 'include') diff --git a/Documentation/gpu/afbc.rst b/Documentation/gpu/afbc.rst new file mode 100644 index 000000000000..4d38dc49d105 --- /dev/null +++ b/Documentation/gpu/afbc.rst @@ -0,0 +1,235 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +=================================== + Arm Framebuffer Compression (AFBC) +=================================== + +AFBC is a proprietary lossless image compression protocol and format. +It provides fine-grained random access and minimizes the amount of +data transferred between IP blocks. + +AFBC can be enabled on drivers which support it via use of the AFBC +format modifiers defined in drm_fourcc.h. See DRM_FORMAT_MOD_ARM_AFBC(*). + +All users of the AFBC modifiers must follow the usage guidelines laid +out in this document, to ensure compatibility across different AFBC +producers and consumers. + +Components and Ordering +======================= + +AFBC streams can contain several components - where a component +corresponds to a color channel (i.e. R, G, B, X, A, Y, Cb, Cr). +The assignment of input/output color channels must be consistent +between the encoder and the decoder for correct operation, otherwise +the consumer will interpret the decoded data incorrectly. + +Furthermore, when the lossless colorspace transform is used +(AFBC_FORMAT_MOD_YTR, which should be enabled for RGB buffers for +maximum compression efficiency), the component order must be: + + * Component 0: R + * Component 1: G + * Component 2: B + +The component ordering is communicated via the fourcc code in the +fourcc:modifier pair. In general, component '0' is considered to +reside in the least-significant bits of the corresponding linear +format. For example, COMP(bits): + + * DRM_FORMAT_ABGR8888 + + * Component 0: R(8) + * Component 1: G(8) + * Component 2: B(8) + * Component 3: A(8) + + * DRM_FORMAT_BGR888 + + * Component 0: R(8) + * Component 1: G(8) + * Component 2: B(8) + + * DRM_FORMAT_YUYV + + * Component 0: Y(8) + * Component 1: Cb(8, 2x1 subsampled) + * Component 2: Cr(8, 2x1 subsampled) + +In AFBC, 'X' components are not treated any differently from any other +component. Therefore, an AFBC buffer with fourcc DRM_FORMAT_XBGR8888 +encodes with 4 components, like so: + + * DRM_FORMAT_XBGR8888 + + * Component 0: R(8) + * Component 1: G(8) + * Component 2: B(8) + * Component 3: X(8) + +Please note, however, that the inclusion of a "wasted" 'X' channel is +bad for compression efficiency, and so it's recommended to avoid +formats containing 'X' bits. If a fourth component is +required/expected by the encoder/decoder, then it is recommended to +instead use an equivalent format with alpha, setting all alpha bits to +'1'. If there is no requirement for a fourth component, then a format +which doesn't include alpha can be used, e.g. DRM_FORMAT_BGR888. + +Number of Planes +================ + +Formats which are typically multi-planar in linear layouts (e.g. YUV +420), can be encoded into one, or multiple, AFBC planes. As with +component order, the encoder and decoder must agree about the number +of planes in order to correctly decode the buffer. The fourcc code is +used to determine the number of encoded planes in an AFBC buffer, +matching the number of planes for the linear (unmodified) format. +Within each plane, the component ordering also follows the fourcc +code: + +For example: + + * DRM_FORMAT_YUYV: nplanes = 1 + + * Plane 0: + + * Component 0: Y(8) + * Component 1: Cb(8, 2x1 subsampled) + * Component 2: Cr(8, 2x1 subsampled) + + * DRM_FORMAT_NV12: nplanes = 2 + + * Plane 0: + + * Component 0: Y(8) + + * Plane 1: + + * Component 0: Cb(8, 2x1 subsampled) + * Component 1: Cr(8, 2x1 subsampled) + +Cross-device interoperability +============================= + +For maximum compatibility across devices, the table below defines +canonical formats for use between AFBC-enabled devices. Formats which +are listed here must be used exactly as specified when using the AFBC +modifiers. Formats which are not listed should be avoided. + +.. flat-table:: AFBC formats + + * - Fourcc code + - Description + - Planes/Components + + * - DRM_FORMAT_ABGR2101010 + - 10-bit per component RGB, with 2-bit alpha + - Plane 0: 4 components + * Component 0: R(10) + * Component 1: G(10) + * Component 2: B(10) + * Component 3: A(2) + + * - DRM_FORMAT_ABGR8888 + - 8-bit per component RGB, with 8-bit alpha + - Plane 0: 4 components + * Component 0: R(8) + * Component 1: G(8) + * Component 2: B(8) + * Component 3: A(8) + + * - DRM_FORMAT_BGR888 + - 8-bit per component RGB + - Plane 0: 3 components + * Component 0: R(8) + * Component 1: G(8) + * Component 2: B(8) + + * - DRM_FORMAT_BGR565 + - 5/6-bit per component RGB + - Plane 0: 3 components + * Component 0: R(5) + * Component 1: G(6) + * Component 2: B(5) + + * - DRM_FORMAT_ABGR1555 + - 5-bit per component RGB, with 1-bit alpha + - Plane 0: 4 components + * Component 0: R(5) + * Component 1: G(5) + * Component 2: B(5) + * Component 3: A(1) + + * - DRM_FORMAT_VUY888 + - 8-bit per component YCbCr 444, single plane + - Plane 0: 3 components + * Component 0: Y(8) + * Component 1: Cb(8) + * Component 2: Cr(8) + + * - DRM_FORMAT_VUY101010 + - 10-bit per component YCbCr 444, single plane + - Plane 0: 3 components + * Component 0: Y(10) + * Component 1: Cb(10) + * Component 2: Cr(10) + + * - DRM_FORMAT_YUYV + - 8-bit per component YCbCr 422, single plane + - Plane 0: 3 components + * Component 0: Y(8) + * Component 1: Cb(8, 2x1 subsampled) + * Component 2: Cr(8, 2x1 subsampled) + + * - DRM_FORMAT_NV16 + - 8-bit per component YCbCr 422, two plane + - Plane 0: 1 component + * Component 0: Y(8) + Plane 1: 2 components + * Component 0: Cb(8, 2x1 subsampled) + * Component 1: Cr(8, 2x1 subsampled) + + * - DRM_FORMAT_Y210 + - 10-bit per component YCbCr 422, single plane + - Plane 0: 3 components + * Component 0: Y(10) + * Component 1: Cb(10, 2x1 subsampled) + * Component 2: Cr(10, 2x1 subsampled) + + * - DRM_FORMAT_P210 + - 10-bit per component YCbCr 422, two plane + - Plane 0: 1 component + * Component 0: Y(10) + Plane 1: 2 components + * Component 0: Cb(10, 2x1 subsampled) + * Component 1: Cr(10, 2x1 subsampled) + + * - DRM_FORMAT_YUV420_8BIT + - 8-bit per component YCbCr 420, single plane + - Plane 0: 3 components + * Component 0: Y(8) + * Component 1: Cb(8, 2x2 subsampled) + * Component 2: Cr(8, 2x2 subsampled) + + * - DRM_FORMAT_YUV420_10BIT + - 10-bit per component YCbCr 420, single plane + - Plane 0: 3 components + * Component 0: Y(10) + * Component 1: Cb(10, 2x2 subsampled) + * Component 2: Cr(10, 2x2 subsampled) + + * - DRM_FORMAT_NV12 + - 8-bit per component YCbCr 420, two plane + - Plane 0: 1 component + * Component 0: Y(8) + Plane 1: 2 components + * Component 0: Cb(8, 2x2 subsampled) + * Component 1: Cr(8, 2x2 subsampled) + + * - DRM_FORMAT_P010 + - 10-bit per component YCbCr 420, two plane + - Plane 0: 1 component + * Component 0: Y(10) + Plane 1: 2 components + * Component 0: Cb(10, 2x2 subsampled) + * Component 1: Cr(10, 2x2 subsampled) diff --git a/Documentation/gpu/drivers.rst b/Documentation/gpu/drivers.rst index 7c1672118a73..c176b34ae9c8 100644 --- a/Documentation/gpu/drivers.rst +++ b/Documentation/gpu/drivers.rst @@ -17,6 +17,7 @@ GPU Driver Documentation vkms bridge/dw-hdmi xen-front + afbc .. only:: subproject and html diff --git a/MAINTAINERS b/MAINTAINERS index 32d444476a90..e79eca22532d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1136,10 +1136,11 @@ F: Documentation/devicetree/bindings/display/arm,hdlcd.txt ARM MALI-DP DRM DRIVER M: Liviu Dudau M: Brian Starkey -M: Mali DP Maintainers +L: Mali DP Maintainers S: Supported F: drivers/gpu/drm/arm/ F: Documentation/devicetree/bindings/display/arm,malidp.txt +F: Documentation/gpu/afbc.rst ARM MFM AND FLOPPY DRIVERS M: Ian Molton diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 0b44260a5ee9..df014ede4e57 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -572,6 +572,9 @@ extern "C" { * AFBC has several features which may be supported and/or used, which are * represented using bits in the modifier. Not all combinations are valid, * and different devices or use-cases may support different combinations. + * + * Further information on the use of AFBC modifiers can be found in + * Documentation/gpu/afbc.rst */ #define DRM_FORMAT_MOD_ARM_AFBC(__afbc_mode) fourcc_mod_code(ARM, __afbc_mode) -- cgit v1.2.3-71-gd317 From c2d88e06bcb98540bb83fac874574eaa4f320363 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 17 Dec 2018 20:43:00 +0100 Subject: drm: Move the legacy kms disable_all helper to crtc helpers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It's not a core function, and the matching atomic functions are also not in the core. Plus the suspend/resume helper is also already there. Needs a tiny bit of open-coding, but less midlayer beats that I think. v2: Rebase onto ast (which gained a new user). Cc: Sam Bobroff Reviewed-by: Alex Deucher Reviewed-by: Sean Paul Signed-off-by: Daniel Vetter Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Ben Skeggs Cc: Alex Deucher Cc: "Christian König" Cc: "David (ChunMing) Zhou" Cc: Rex Zhu Cc: Andrey Grodzovsky Cc: Huang Rui Cc: Shaoyun Liu Cc: Monk Liu Cc: nouveau@lists.freedesktop.org Cc: amd-gfx@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20181217194303.14397-4-daniel.vetter@ffwll.ch --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +- drivers/gpu/drm/ast/ast_fb.c | 2 +- drivers/gpu/drm/drm_crtc.c | 31 -------------------------- drivers/gpu/drm/drm_crtc_helper.c | 35 ++++++++++++++++++++++++++++++ drivers/gpu/drm/nouveau/nouveau_display.c | 2 +- drivers/gpu/drm/radeon/radeon_display.c | 2 +- include/drm/drm_crtc.h | 2 -- include/drm/drm_crtc_helper.h | 1 + 8 files changed, 40 insertions(+), 37 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 8a078f4ae73d..28bccceaa363 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2708,7 +2708,7 @@ void amdgpu_device_fini(struct amdgpu_device *adev) amdgpu_irq_disable_all(adev); if (adev->mode_info.mode_config_initialized){ if (!amdgpu_device_has_dc_support(adev)) - drm_crtc_force_disable_all(adev->ddev); + drm_helper_force_disable_all(adev->ddev); else drm_atomic_helper_shutdown(adev->ddev); } diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c index c2e41369adcf..75f867d00031 100644 --- a/drivers/gpu/drm/ast/ast_fb.c +++ b/drivers/gpu/drm/ast/ast_fb.c @@ -261,7 +261,7 @@ static void ast_fbdev_destroy(struct drm_device *dev, { struct ast_framebuffer *afb = &afbdev->afb; - drm_crtc_force_disable_all(dev); + drm_helper_force_disable_all(dev); drm_fb_helper_unregister_fbi(&afbdev->helper); if (afb->obj) { diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index f660819d406e..7dabbaf033a1 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -104,37 +104,6 @@ int drm_crtc_force_disable(struct drm_crtc *crtc) return drm_mode_set_config_internal(&set); } -/** - * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs - * @dev: DRM device whose CRTCs to turn off - * - * Drivers may want to call this on unload to ensure that all displays are - * unlit and the GPU is in a consistent, low power state. Takes modeset locks. - * - * Note: This should only be used by non-atomic legacy drivers. For an atomic - * version look at drm_atomic_helper_shutdown(). - * - * Returns: - * Zero on success, error code on failure. - */ -int drm_crtc_force_disable_all(struct drm_device *dev) -{ - struct drm_crtc *crtc; - int ret = 0; - - drm_modeset_lock_all(dev); - drm_for_each_crtc(crtc, dev) - if (crtc->enabled) { - ret = drm_crtc_force_disable(crtc); - if (ret) - goto out; - } -out: - drm_modeset_unlock_all(dev); - return ret; -} -EXPORT_SYMBOL(drm_crtc_force_disable_all); - static unsigned int drm_num_crtcs(struct drm_device *dev) { unsigned int num = 0; diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 3b5cf93233c1..91dc9b6386e7 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -994,3 +994,38 @@ void drm_helper_resume_force_mode(struct drm_device *dev) drm_modeset_unlock_all(dev); } EXPORT_SYMBOL(drm_helper_resume_force_mode); + +/** + * drm_helper_force_disable_all - Forcibly turn off all enabled CRTCs + * @dev: DRM device whose CRTCs to turn off + * + * Drivers may want to call this on unload to ensure that all displays are + * unlit and the GPU is in a consistent, low power state. Takes modeset locks. + * + * Note: This should only be used by non-atomic legacy drivers. For an atomic + * version look at drm_atomic_helper_shutdown(). + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_helper_force_disable_all(struct drm_device *dev) +{ + struct drm_crtc *crtc; + int ret = 0; + + drm_modeset_lock_all(dev); + drm_for_each_crtc(crtc, dev) + if (crtc->enabled) { + struct drm_mode_set set = { + .crtc = crtc, + }; + + ret = drm_mode_set_config_internal(&set); + if (ret) + goto out; + } +out: + drm_modeset_unlock_all(dev); + return ret; +} +EXPORT_SYMBOL(drm_helper_force_disable_all); diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index f326ffd86766..5d273a655479 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -453,7 +453,7 @@ nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime) if (drm_drv_uses_atomic_modeset(dev)) drm_atomic_helper_shutdown(dev); else - drm_crtc_force_disable_all(dev); + drm_helper_force_disable_all(dev); } /* disable flip completion events */ diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 9d3ac8b981da..b190478ad087 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -1646,7 +1646,7 @@ void radeon_modeset_fini(struct radeon_device *rdev) if (rdev->mode_info.mode_config_initialized) { drm_kms_helper_poll_fini(rdev->ddev); radeon_hpd_fini(rdev); - drm_crtc_force_disable_all(rdev->ddev); + drm_helper_force_disable_all(rdev->ddev); radeon_fbdev_fini(rdev); radeon_afmt_fini(rdev); drm_mode_config_cleanup(rdev->ddev); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index b45bec0b7a9c..85abd3fe9e83 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1149,8 +1149,6 @@ static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc) return 1 << drm_crtc_index(crtc); } -int drm_crtc_force_disable_all(struct drm_device *dev); - int drm_mode_set_config_internal(struct drm_mode_set *set); struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx); diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h index d65f034843ce..0ee9a96b70da 100644 --- a/include/drm/drm_crtc_helper.h +++ b/include/drm/drm_crtc_helper.h @@ -56,6 +56,7 @@ bool drm_helper_encoder_in_use(struct drm_encoder *encoder); int drm_helper_connector_dpms(struct drm_connector *connector, int mode); void drm_helper_resume_force_mode(struct drm_device *dev); +int drm_helper_force_disable_all(struct drm_device *dev); /* drm_probe_helper.c */ int drm_helper_probe_single_connector_modes(struct drm_connector -- cgit v1.2.3-71-gd317 From 3214a16684468f5429469c3b59dc25b312b9d6cc Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 11 Jan 2019 17:40:48 +0100 Subject: drm/doc: Polish kerneldoc for drm_device.h - Move all the legacy gunk at the bottom, and exclude it from kerneldoc. - Documentation for the remaining bits. v2: Fix typo (Sam). Cc: Sam Ravnborg Acked-by: Sam Ravnborg Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190111164048.29067-5-daniel.vetter@ffwll.ch --- Documentation/gpu/drm-internals.rst | 3 + include/drm/drm_device.h | 150 ++++++++++++++++++++---------------- 2 files changed, 88 insertions(+), 65 deletions(-) (limited to 'include') diff --git a/Documentation/gpu/drm-internals.rst b/Documentation/gpu/drm-internals.rst index 5ee9674fb9e9..9090fabf3f7a 100644 --- a/Documentation/gpu/drm-internals.rst +++ b/Documentation/gpu/drm-internals.rst @@ -143,6 +143,9 @@ Device Instance and Driver Handling .. kernel-doc:: drivers/gpu/drm/drm_drv.c :doc: driver instance overview +.. kernel-doc:: include/drm/drm_device.h + :internal: + .. kernel-doc:: include/drm/drm_drv.h :internal: diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index d7cedbac66a3..a6f8e5abb66f 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -69,7 +69,13 @@ struct drm_device { /** @driver: DRM driver managing the device */ struct drm_driver *driver; - /** @dev_private: DRM driver private data */ + /** + * @dev_private: + * + * DRM driver private data. Instead of using this pointer it is + * recommended that drivers use drm_dev_init() and embed struct + * &drm_device in their larger per-device structure. + */ void *dev_private; /** @primary: Primary node */ @@ -78,6 +84,11 @@ struct drm_device { /** @render: Render node */ struct drm_minor *render; + /** + * @registered: + * + * Internally used by drm_dev_register() and drm_connector_register(). + */ bool registered; /** @@ -134,16 +145,13 @@ struct drm_device { */ int open_count; - /** @buf_lock: Lock for &buf_use and a few other things. */ - spinlock_t buf_lock; - - /** @buf_use: Usage counter for buffers in use -- cannot alloc */ - int buf_use; - - /** @buf_alloc: Buffer allocation in progress */ - atomic_t buf_alloc; - + /** @filelist_mutex: Protects @filelist. */ struct mutex filelist_mutex; + /** + * @filelist: + * + * List of userspace clients, linked through &drm_file.lhead. + */ struct list_head filelist; /** @@ -168,46 +176,6 @@ struct drm_device { */ struct list_head clientlist; - /** @maplist: Memory management - linked list of regions */ - struct list_head maplist; - - /** @map_hash: Memory management - user token hash table for maps */ - struct drm_open_hash map_hash; - - /** - * @ctxlist: - * Context handle management - linked list of context handles - */ - struct list_head ctxlist; - - /** - * @ctxlist_mutex: - * - * Context handle management - mutex for &ctxlist - */ - struct mutex ctxlist_mutex; - - /** - * @ctx_idr: - * Context handle management - */ - struct idr ctx_idr; - - /** - * @vmalist: - * Context handle management - list of vmas (for debugging) - */ - struct list_head vmalist; - - /** @dma: Optional pointer for DMA support */ - struct drm_device_dma *dma; - - /** @context_flag: Context swapping flag */ - __volatile__ long context_flag; - - /** @last_context: Last current context */ - int last_context; - /** * @irq_enabled: * @@ -216,6 +184,10 @@ struct drm_device { * to true manually. */ bool irq_enabled; + + /** + * @irq: Used by the drm_irq_install() and drm_irq_unistall() helpers. + */ int irq; /** @@ -249,6 +221,10 @@ struct drm_device { * Protects vblank count and time updates during vblank enable/disable */ spinlock_t vblank_time_lock; + /** + * @vbl_lock: Top-level vblank references lock, wraps the low-level + * @vblank_time_lock. + */ spinlock_t vbl_lock; /** @@ -264,14 +240,19 @@ struct drm_device { * races and imprecision over longer time periods, hence exposing a * hardware vblank counter is always recommended. * - * If non-zeor, &drm_crtc_funcs.get_vblank_counter must be set. + * If non-zero, &drm_crtc_funcs.get_vblank_counter must be set. */ - - /** @max_vblank_count: Size of vblank counter register */ u32 max_vblank_count; /** @vblank_event_list: List of vblank events */ struct list_head vblank_event_list; + + /** + * @event_lock: + * + * Protects @vblank_event_list and event delivery in + * general. See drm_send_event() and drm_send_event_locked(). + */ spinlock_t event_lock; /** @agp: AGP data */ @@ -281,23 +262,12 @@ struct drm_device { struct pci_dev *pdev; #ifdef __alpha__ + /** @hose: PCI hose, only used on ALPHA platforms. */ struct pci_controller *hose; #endif - - /** @sg: Scatter gather memory */ - struct drm_sg_mem *sg; - /** @num_crtcs: Number of CRTCs on this device */ unsigned int num_crtcs; - struct { - int context; - struct drm_hw_lock *lock; - } sigdata; - - struct drm_local_map *agp_buffer_map; - unsigned int agp_buffer_token; - /** @mode_config: Current mode config */ struct drm_mode_config mode_config; @@ -327,6 +297,56 @@ struct drm_device { * Set by drm_fb_helper_init() and cleared by drm_fb_helper_fini(). */ struct drm_fb_helper *fb_helper; + + /* Everything below here is for legacy driver, never use! */ + /* private: */ + + /* Context handle management - linked list of context handles */ + struct list_head ctxlist; + + /* Context handle management - mutex for &ctxlist */ + struct mutex ctxlist_mutex; + + /* Context handle management */ + struct idr ctx_idr; + + /* Memory management - linked list of regions */ + struct list_head maplist; + + /* Memory management - user token hash table for maps */ + struct drm_open_hash map_hash; + + /* Context handle management - list of vmas (for debugging) */ + struct list_head vmalist; + + /* Optional pointer for DMA support */ + struct drm_device_dma *dma; + + /* Context swapping flag */ + __volatile__ long context_flag; + + /* Last current context */ + int last_context; + + /* Lock for &buf_use and a few other things. */ + spinlock_t buf_lock; + + /* Usage counter for buffers in use -- cannot alloc */ + int buf_use; + + /* Buffer allocation in progress */ + atomic_t buf_alloc; + + struct { + int context; + struct drm_hw_lock *lock; + } sigdata; + + struct drm_local_map *agp_buffer_map; + unsigned int agp_buffer_token; + + /* Scatter gather memory */ + struct drm_sg_mem *sg; }; #endif -- cgit v1.2.3-71-gd317 From 63f8f3badf799c8b63ff33a489886bc138ce5d09 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 6 Apr 2018 17:39:01 +0300 Subject: drm: bridge: Constify mode arguments to bridge .mode_set() operation The mode and ajusted_mode passed to the bridge .mode_set() operation should never be modified by the bridge (and are not in any of the existing bridge drivers). Make them const to make this clear. Signed-off-by: Laurent Pinchart Reviewed-by: Daniel Vetter --- drivers/gpu/drm/bridge/adv7511/adv7511.h | 4 ++-- drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 8 ++++---- drivers/gpu/drm/bridge/adv7511/adv7533.c | 2 +- drivers/gpu/drm/bridge/analogix-anx78xx.c | 4 ++-- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 4 ++-- drivers/gpu/drm/bridge/sii902x.c | 4 ++-- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++-- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 18 +++++++++--------- drivers/gpu/drm/bridge/tc358767.c | 9 +++++---- drivers/gpu/drm/drm_bridge.c | 4 ++-- drivers/gpu/drm/exynos/exynos_drm_mic.c | 4 ++-- drivers/gpu/drm/i2c/tda998x_drv.c | 6 +++--- drivers/gpu/drm/mediatek/mtk_hdmi.c | 4 ++-- drivers/gpu/drm/msm/dsi/dsi.h | 2 +- drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +- drivers/gpu/drm/msm/dsi/dsi_manager.c | 4 ++-- drivers/gpu/drm/msm/edp/edp_bridge.c | 4 ++-- drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 4 ++-- drivers/gpu/drm/rcar-du/rcar_lvds.c | 4 ++-- drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 2 +- drivers/gpu/drm/sti/sti_dvo.c | 4 ++-- drivers/gpu/drm/sti/sti_hda.c | 4 ++-- drivers/gpu/drm/sti/sti_hdmi.c | 4 ++-- drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 2 +- include/drm/bridge/dw_mipi_dsi.h | 3 ++- include/drm/drm_bridge.h | 8 ++++---- 26 files changed, 62 insertions(+), 60 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h index 73d8ccb97742..2b6e0832d1cf 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h @@ -395,7 +395,7 @@ static inline int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511) #ifdef CONFIG_DRM_I2C_ADV7533 void adv7533_dsi_power_on(struct adv7511 *adv); void adv7533_dsi_power_off(struct adv7511 *adv); -void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode); +void adv7533_mode_set(struct adv7511 *adv, const struct drm_display_mode *mode); int adv7533_patch_registers(struct adv7511 *adv); int adv7533_patch_cec_registers(struct adv7511 *adv); int adv7533_attach_dsi(struct adv7511 *adv); @@ -411,7 +411,7 @@ static inline void adv7533_dsi_power_off(struct adv7511 *adv) } static inline void adv7533_mode_set(struct adv7511 *adv, - struct drm_display_mode *mode) + const struct drm_display_mode *mode) { } diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index 85c2d407a52e..d0e98caa2e2a 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -676,8 +676,8 @@ static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511, } static void adv7511_mode_set(struct adv7511 *adv7511, - struct drm_display_mode *mode, - struct drm_display_mode *adj_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adj_mode) { unsigned int low_refresh_rate; unsigned int hsync_polarity = 0; @@ -839,8 +839,8 @@ static void adv7511_bridge_disable(struct drm_bridge *bridge) } static void adv7511_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adj_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adj_mode) { struct adv7511 *adv = bridge_to_adv7511(bridge); diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c index 185b6d842166..5d5e7d9eded2 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7533.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c @@ -108,7 +108,7 @@ void adv7533_dsi_power_off(struct adv7511 *adv) regmap_write(adv->regmap_cec, 0x27, 0x0b); } -void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode) +void adv7533_mode_set(struct adv7511 *adv, const struct drm_display_mode *mode) { struct mipi_dsi_device *dsi = adv->dsi; int lanes, ret; diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c index f8433c93f463..705620e9f505 100644 --- a/drivers/gpu/drm/bridge/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c @@ -1082,8 +1082,8 @@ static void anx78xx_bridge_disable(struct drm_bridge *bridge) } static void anx78xx_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct anx78xx *anx78xx = bridge_to_anx78xx(bridge); struct hdmi_avi_infoframe frame; diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 753e96129ab7..4d5b47585834 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1361,8 +1361,8 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge) } static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *orig_mode, - struct drm_display_mode *mode) + const struct drm_display_mode *orig_mode, + const struct drm_display_mode *mode) { struct analogix_dp_device *dp = bridge->driver_private; struct drm_display_info *display_info = &dp->connector.display_info; diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index bfa902013aa4..a0b3a568dd9c 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -232,8 +232,8 @@ static void sii902x_bridge_enable(struct drm_bridge *bridge) } static void sii902x_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adj) + const struct drm_display_mode *mode, + const struct drm_display_mode *adj) { struct sii902x *sii902x = bridge_to_sii902x(bridge); struct regmap *regmap = sii902x->regmap; diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 64c3cf027518..4fed3eda6ded 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -1998,8 +1998,8 @@ dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge, } static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *orig_mode, - struct drm_display_mode *mode) + const struct drm_display_mode *orig_mode, + const struct drm_display_mode *mode) { struct dw_hdmi *hdmi = bridge->driver_private; diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 2f4b145b73af..23a5977a3b0a 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -248,7 +248,7 @@ static inline bool dw_mipi_is_dual_mode(struct dw_mipi_dsi *dsi) * The controller should generate 2 frames before * preparing the peripheral. */ -static void dw_mipi_dsi_wait_for_two_frames(struct drm_display_mode *mode) +static void dw_mipi_dsi_wait_for_two_frames(const struct drm_display_mode *mode) { int refresh, two_frames; @@ -564,7 +564,7 @@ static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) } static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi, - struct drm_display_mode *mode) + const struct drm_display_mode *mode) { u32 val = 0, color = 0; @@ -607,7 +607,7 @@ static void dw_mipi_dsi_packet_handler_config(struct dw_mipi_dsi *dsi) } static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi, - struct drm_display_mode *mode) + const struct drm_display_mode *mode) { /* * TODO dw drv improvements @@ -642,7 +642,7 @@ static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi) /* Get lane byte clock cycles. */ static u32 dw_mipi_dsi_get_hcomponent_lbcc(struct dw_mipi_dsi *dsi, - struct drm_display_mode *mode, + const struct drm_display_mode *mode, u32 hcomponent) { u32 frac, lbcc; @@ -658,7 +658,7 @@ static u32 dw_mipi_dsi_get_hcomponent_lbcc(struct dw_mipi_dsi *dsi, } static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi, - struct drm_display_mode *mode) + const struct drm_display_mode *mode) { u32 htotal, hsa, hbp, lbcc; @@ -681,7 +681,7 @@ static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi, } static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi, - struct drm_display_mode *mode) + const struct drm_display_mode *mode) { u32 vactive, vsa, vfp, vbp; @@ -818,7 +818,7 @@ static unsigned int dw_mipi_dsi_get_lanes(struct dw_mipi_dsi *dsi) } static void dw_mipi_dsi_mode_set(struct dw_mipi_dsi *dsi, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *adjusted_mode) { const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops; void *priv_data = dsi->plat_data->priv_data; @@ -861,8 +861,8 @@ static void dw_mipi_dsi_mode_set(struct dw_mipi_dsi *dsi, } static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge); diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 8e28e738cb52..4df07f4cbff5 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -203,7 +203,7 @@ struct tc_data { /* display edid */ struct edid *edid; /* current mode */ - struct drm_display_mode *mode; + const struct drm_display_mode *mode; u32 rev; u8 assr; @@ -648,7 +648,8 @@ err_dpcd_read: return ret; } -static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode) +static int tc_set_video_mode(struct tc_data *tc, + const struct drm_display_mode *mode) { int ret; int vid_sync_dly; @@ -1113,8 +1114,8 @@ static enum drm_mode_status tc_connector_mode_valid(struct drm_connector *connec } static void tc_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adj) + const struct drm_display_mode *mode, + const struct drm_display_mode *adj) { struct tc_data *tc = bridge_to_tc(bridge); diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index ba7025041e46..138b2711d389 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -294,8 +294,8 @@ EXPORT_SYMBOL(drm_bridge_post_disable); * Note: the bridge passed should be the one closest to the encoder */ void drm_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { if (!bridge) return; diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c index 2fd299a58297..dd02e8a323ef 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_mic.c +++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c @@ -246,8 +246,8 @@ already_disabled: } static void mic_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct exynos_mic *mic = bridge->driver_private; diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index a7c39f39793f..a6ba461749b2 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -845,7 +845,7 @@ static int tda998x_write_aif(struct tda998x_priv *priv, } static void -tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode) +tda998x_write_avi(struct tda998x_priv *priv, const struct drm_display_mode *mode) { union hdmi_infoframe frame; @@ -1339,8 +1339,8 @@ static void tda998x_bridge_disable(struct drm_bridge *bridge) } static void tda998x_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge); unsigned long tmds_clock; diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 862f3ec22131..994f0d8646bf 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1370,8 +1370,8 @@ static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge) } static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 08f3fc6771b7..9c6b31c2d79f 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -168,7 +168,7 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host, bool is_dual_dsi); int msm_dsi_host_power_off(struct mipi_dsi_host *host); int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, - struct drm_display_mode *mode); + const struct drm_display_mode *mode); struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, unsigned long *panel_flags); struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host); diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 38e481d2d606..610183db1daf 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -2424,7 +2424,7 @@ unlock_ret: } int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, - struct drm_display_mode *mode) + const struct drm_display_mode *mode) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 80aa6344185e..bdb063b2dc4a 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -527,8 +527,8 @@ disable_phy: } static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { int id = dsi_mgr_bridge_get_id(bridge); struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); diff --git a/drivers/gpu/drm/msm/edp/edp_bridge.c b/drivers/gpu/drm/msm/edp/edp_bridge.c index 931a5c97cccf..86366ba03e60 100644 --- a/drivers/gpu/drm/msm/edp/edp_bridge.c +++ b/drivers/gpu/drm/msm/edp/edp_bridge.c @@ -52,8 +52,8 @@ static void edp_bridge_post_disable(struct drm_bridge *bridge) } static void edp_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct drm_device *dev = bridge->dev; struct drm_connector *connector; diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c index 98d61c690260..b42feb80531b 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c @@ -207,8 +207,8 @@ static void msm_hdmi_bridge_post_disable(struct drm_bridge *bridge) } static void msm_hdmi_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); struct hdmi *hdmi = hdmi_bridge->hdmi; diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c index 534a128a869d..c62136a1e941 100644 --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c @@ -520,8 +520,8 @@ static void rcar_lvds_get_lvds_mode(struct rcar_lvds *lvds) } static void rcar_lvds_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge); diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index 7ee359bcee62..ef8486e5e2cd 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -467,7 +467,7 @@ static int dw_mipi_dsi_phy_init(void *priv_data) } static int -dw_mipi_dsi_get_lane_mbps(void *priv_data, struct drm_display_mode *mode, +dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode, unsigned long mode_flags, u32 lanes, u32 format, unsigned int *lane_mbps) { diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c index b08376b7611b..6d33772f77eb 100644 --- a/drivers/gpu/drm/sti/sti_dvo.c +++ b/drivers/gpu/drm/sti/sti_dvo.c @@ -277,8 +277,8 @@ static void sti_dvo_pre_enable(struct drm_bridge *bridge) } static void sti_dvo_set_mode(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct sti_dvo *dvo = bridge->driver_private; struct sti_mixer *mixer = to_sti_mixer(dvo->encoder->crtc); diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c index 19b9b5ed1297..a63dd5eb7081 100644 --- a/drivers/gpu/drm/sti/sti_hda.c +++ b/drivers/gpu/drm/sti/sti_hda.c @@ -508,8 +508,8 @@ static void sti_hda_pre_enable(struct drm_bridge *bridge) } static void sti_hda_set_mode(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct sti_hda *hda = bridge->driver_private; u32 mode_idx; diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index ccf718404a1c..fbef4ad6c8ef 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -917,8 +917,8 @@ static void sti_hdmi_pre_enable(struct drm_bridge *bridge) } static void sti_hdmi_set_mode(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct sti_hdmi *hdmi = bridge->driver_private; int ret; diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c index a514b593f37c..a672b59a2226 100644 --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c @@ -215,7 +215,7 @@ static int dw_mipi_dsi_phy_init(void *priv_data) } static int -dw_mipi_dsi_get_lane_mbps(void *priv_data, struct drm_display_mode *mode, +dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode, unsigned long mode_flags, u32 lanes, u32 format, unsigned int *lane_mbps) { diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h index 48a671e782ca..7d3dd69a5caa 100644 --- a/include/drm/bridge/dw_mipi_dsi.h +++ b/include/drm/bridge/dw_mipi_dsi.h @@ -14,7 +14,8 @@ struct dw_mipi_dsi; struct dw_mipi_dsi_phy_ops { int (*init)(void *priv_data); - int (*get_lane_mbps)(void *priv_data, struct drm_display_mode *mode, + int (*get_lane_mbps)(void *priv_data, + const struct drm_display_mode *mode, unsigned long mode_flags, u32 lanes, u32 format, unsigned int *lane_mbps); }; diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index bd850747ce54..9da8c93f7976 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -196,8 +196,8 @@ struct drm_bridge_funcs { * the DRM framework will have to be extended with DRM bridge states. */ void (*mode_set)(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode); + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode); /** * @pre_enable: * @@ -310,8 +310,8 @@ enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge, void drm_bridge_disable(struct drm_bridge *bridge); void drm_bridge_post_disable(struct drm_bridge *bridge); void drm_bridge_mode_set(struct drm_bridge *bridge, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode); + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode); void drm_bridge_pre_enable(struct drm_bridge *bridge); void drm_bridge_enable(struct drm_bridge *bridge); -- cgit v1.2.3-71-gd317 From e9eafcb589213395232084a2378e2e90f67feb29 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sat, 12 Jan 2019 20:32:44 +0100 Subject: drm: move drm_can_sleep() to drm_util.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move drm_can_sleep() out of drmP.h to allow users to get rid of the drmP.h include. There was no header file that was a good match for this helper function. So add this to drm_util with the relevant includes. Add include of drm_util.h to all users. v2: - Update comments to use kernel-doc style (Daniel) - Add FIXME to drm_can_sleep and add note that this function should not be used in new code (Daniel) v3: - Fix kernel-doc syntax (Daniel) - Plug drm_util.h into drm-internels.rst (Daniel) Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Cc: Alex Deucher Cc: "Christian König" Cc: "David (ChunMing) Zhou" Cc: Gerd Hoffmann Cc: Rob Clark Cc: Tomi Valkeinen Cc: Eric Anholt Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190112193251.20450-2-sam@ravnborg.org --- Documentation/gpu/drm-internals.rst | 9 ++++++ drivers/gpu/drm/amd/amdgpu/atom.c | 2 ++ drivers/gpu/drm/ast/ast_fb.c | 2 ++ drivers/gpu/drm/cirrus/cirrus_fbdev.c | 1 + drivers/gpu/drm/drm_flip_work.c | 1 + drivers/gpu/drm/mgag200/mgag200_fb.c | 1 + drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c | 1 + drivers/gpu/drm/omapdrm/omap_fbdev.c | 1 + drivers/gpu/drm/qxl/qxl_cmd.c | 2 ++ drivers/gpu/drm/radeon/atom.c | 2 ++ drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 1 + drivers/gpu/drm/vc4/vc4_drv.h | 1 + include/drm/drmP.h | 8 ----- include/drm/drm_util.h | 43 ++++++++++++++++++++++++- 14 files changed, 66 insertions(+), 9 deletions(-) (limited to 'include') diff --git a/Documentation/gpu/drm-internals.rst b/Documentation/gpu/drm-internals.rst index 9090fabf3f7a..2caf21effd28 100644 --- a/Documentation/gpu/drm-internals.rst +++ b/Documentation/gpu/drm-internals.rst @@ -233,6 +233,15 @@ Printer .. kernel-doc:: drivers/gpu/drm/drm_print.c :export: +Utilities +--------- + +.. kernel-doc:: include/drm/drm_util.h + :doc: drm utils + +.. kernel-doc:: include/drm/drm_util.h + :internal: + Legacy Support Code =================== diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c index e9934de1b9cf..dd30f4e61a8c 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.c +++ b/drivers/gpu/drm/amd/amdgpu/atom.c @@ -27,6 +27,8 @@ #include #include +#include + #define ATOM_DEBUG #include "atom.h" diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c index 75f867d00031..2c9f8dd9733a 100644 --- a/drivers/gpu/drm/ast/ast_fb.c +++ b/drivers/gpu/drm/ast/ast_fb.c @@ -39,7 +39,9 @@ #include #include #include +#include #include + #include "ast_drv.h" static void ast_dirty_update(struct ast_fbdev *afbdev, diff --git a/drivers/gpu/drm/cirrus/cirrus_fbdev.c b/drivers/gpu/drm/cirrus/cirrus_fbdev.c index 3d0a3958d083..39df62acac69 100644 --- a/drivers/gpu/drm/cirrus/cirrus_fbdev.c +++ b/drivers/gpu/drm/cirrus/cirrus_fbdev.c @@ -10,6 +10,7 @@ */ #include #include +#include #include #include diff --git a/drivers/gpu/drm/drm_flip_work.c b/drivers/gpu/drm/drm_flip_work.c index 12dea16f22a8..3da3bf5af405 100644 --- a/drivers/gpu/drm/drm_flip_work.c +++ b/drivers/gpu/drm/drm_flip_work.c @@ -22,6 +22,7 @@ */ #include +#include #include /** diff --git a/drivers/gpu/drm/mgag200/mgag200_fb.c b/drivers/gpu/drm/mgag200/mgag200_fb.c index 30726c9fe28c..6893934b26c0 100644 --- a/drivers/gpu/drm/mgag200/mgag200_fb.c +++ b/drivers/gpu/drm/mgag200/mgag200_fb.c @@ -12,6 +12,7 @@ */ #include #include +#include #include #include diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c index 7cebcb2b3a37..6153514db04c 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c @@ -16,6 +16,7 @@ * this program. If not, see . */ +#include #include "mdp5_kms.h" #include "mdp5_smp.h" diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index aee99194499f..851c59f07eb1 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -16,6 +16,7 @@ */ #include +#include #include #include "omap_drv.h" diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c index dffc5093ff16..2e100f644236 100644 --- a/drivers/gpu/drm/qxl/qxl_cmd.c +++ b/drivers/gpu/drm/qxl/qxl_cmd.c @@ -25,6 +25,8 @@ /* QXL cmd/ring handling */ +#include + #include "qxl_drv.h" #include "qxl_object.h" diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index e55cbeee7a53..ac98ad561870 100644 --- a/drivers/gpu/drm/radeon/atom.c +++ b/drivers/gpu/drm/radeon/atom.c @@ -27,6 +27,8 @@ #include #include +#include + #define ATOM_DEBUG #include "atom.h" diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c index 222a1fa41d7c..7e3257e8fd56 100644 --- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c @@ -24,6 +24,7 @@ * Alex Deucher */ #include +#include #include #include #include "radeon.h" diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index c24b078f0593..2c635f001c71 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 9e47c8dc6b87..bc4cb3732407 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -94,14 +94,6 @@ struct dma_buf_attachment; struct pci_dev; struct pci_controller; -/* returns true if currently okay to sleep */ -static inline bool drm_can_sleep(void) -{ - if (in_atomic() || in_dbg_master() || irqs_disabled()) - return false; - return true; -} - #if defined(CONFIG_DRM_DEBUG_SELFTEST_MODULE) #define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) EXPORT_SYMBOL(x) #else diff --git a/include/drm/drm_util.h b/include/drm/drm_util.h index 88abdca89baa..f776a55e5508 100644 --- a/include/drm/drm_util.h +++ b/include/drm/drm_util.h @@ -26,7 +26,48 @@ #ifndef _DRM_UTIL_H_ #define _DRM_UTIL_H_ -/* helper for handling conditionals in various for_each macros */ +/** + * DOC: drm utils + * + * Macros and inline functions that does not naturally belong in other places + */ + +#include +#include +#include +#include + +/** + * for_each_if - helper for handling conditionals in various for_each macros + * @condition: The condition to check + * + * Typical use:: + * + * #define for_each_foo_bar(x, y) \' + * list_for_each_entry(x, y->list, head) \' + * for_each_if(x->something == SOMETHING) + * + * The for_each_if() macro makes the use of for_each_foo_bar() less error + * prone. + */ #define for_each_if(condition) if (!(condition)) {} else +/** + * drm_can_sleep - returns true if currently okay to sleep + * + * This function shall not be used in new code. + * The check for running in atomic context may not work - see linux/preempt.h. + * + * FIXME: All users of drm_can_sleep should be removed (see todo.rst) + * + * Returns: + * True if kgdb is active or we are in an atomic context or irqs are disabled + */ +static inline bool drm_can_sleep(void) +{ + if (in_atomic() || in_dbg_master() || irqs_disabled()) + return false; + return true; +} + #endif -- cgit v1.2.3-71-gd317 From 21376e2c3c5bad5e87ba700c055c8a8235c2bfd5 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sat, 12 Jan 2019 20:32:45 +0100 Subject: drm: move EXPORT_SYMBOL_FOR_TESTS_ONLY to drm_util.h In the quest to get rid of drmP.h move the newly added EXPORT_SYMBOL_FOR_TESTS_ONLY to drm_util.h. Fix the single user. Add a note to drmP.h to avoid further use of it. Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190112193251.20450-3-sam@ravnborg.org --- drivers/gpu/drm/drm_framebuffer.c | 1 + include/drm/drmP.h | 11 ++++++----- include/drm/drm_util.h | 10 ++++++++++ 3 files changed, 17 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index fcaea8f50513..7abcb265a108 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -27,6 +27,7 @@ #include #include #include +#include #include "drm_internal.h" #include "drm_crtc_internal.h" diff --git a/include/drm/drmP.h b/include/drm/drmP.h index bc4cb3732407..3f5c577c9dbd 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -94,10 +94,11 @@ struct dma_buf_attachment; struct pci_dev; struct pci_controller; -#if defined(CONFIG_DRM_DEBUG_SELFTEST_MODULE) -#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) EXPORT_SYMBOL(x) -#else -#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) -#endif +/* + * NOTE: drmP.h is obsolete - do NOT add anything to this file + * + * Do not include drmP.h in new files. + * Work is ongoing to remove drmP.h includes from existing files + */ #endif diff --git a/include/drm/drm_util.h b/include/drm/drm_util.h index f776a55e5508..0500da65b1d1 100644 --- a/include/drm/drm_util.h +++ b/include/drm/drm_util.h @@ -37,6 +37,16 @@ #include #include +/* + * Use EXPORT_SYMBOL_FOR_TESTS_ONLY() for functions that shall + * only be visible for drmselftests. + */ +#if defined(CONFIG_DRM_DEBUG_SELFTEST_MODULE) +#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) EXPORT_SYMBOL(x) +#else +#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) +#endif + /** * for_each_if - helper for handling conditionals in various for_each macros * @condition: The condition to check -- cgit v1.2.3-71-gd317 From ed20151a7699bb2c77eba3610199789a126940c4 Mon Sep 17 00:00:00 2001 From: Ville Syrjälä Date: Tue, 27 Nov 2018 20:20:04 +0200 Subject: drm/vblank: Allow dynamic per-crtc max_vblank_count MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On i965gm we need to adjust max_vblank_count dynamically depending on whether the TV encoder is used or not. To that end add a per-crtc max_vblank_count that takes precedence over its device wide counterpart. The driver can now call drm_crtc_set_max_vblank_count() to configure the per-crtc value before calling drm_vblank_on(). Also looks like there was some discussion about exynos needing similar treatment. v2: Drop the extra max_vblank_count!=0 check for the WARN(last!=current), will take care of it in i915 code (Daniel) WARN_ON(!inmodeset) (Daniel) WARN_ON(dev->max_vblank_count) Pimp up the docs (Daniel) Cc: stable@vger.kernel.org Cc: Inki Dae Cc: Daniel Vetter Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20181127182004.28885-1-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter --- drivers/gpu/drm/drm_vblank.c | 45 +++++++++++++++++++++++++++++++++++++++++--- include/drm/drm_device.h | 6 ++++++ include/drm/drm_vblank.h | 22 ++++++++++++++++++++++ 3 files changed, 70 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c index 98e091175921..cde71ee95a8f 100644 --- a/drivers/gpu/drm/drm_vblank.c +++ b/drivers/gpu/drm/drm_vblank.c @@ -105,13 +105,20 @@ static void store_vblank(struct drm_device *dev, unsigned int pipe, write_sequnlock(&vblank->seqlock); } +static u32 drm_max_vblank_count(struct drm_device *dev, unsigned int pipe) +{ + struct drm_vblank_crtc *vblank = &dev->vblank[pipe]; + + return vblank->max_vblank_count ?: dev->max_vblank_count; +} + /* * "No hw counter" fallback implementation of .get_vblank_counter() hook, * if there is no useable hardware frame counter available. */ static u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe) { - WARN_ON_ONCE(dev->max_vblank_count != 0); + WARN_ON_ONCE(drm_max_vblank_count(dev, pipe) != 0); return 0; } @@ -198,6 +205,7 @@ static void drm_update_vblank_count(struct drm_device *dev, unsigned int pipe, ktime_t t_vblank; int count = DRM_TIMESTAMP_MAXRETRIES; int framedur_ns = vblank->framedur_ns; + u32 max_vblank_count = drm_max_vblank_count(dev, pipe); /* * Interrupts were disabled prior to this call, so deal with counter @@ -216,9 +224,9 @@ static void drm_update_vblank_count(struct drm_device *dev, unsigned int pipe, rc = drm_get_last_vbltimestamp(dev, pipe, &t_vblank, in_vblank_irq); } while (cur_vblank != __get_vblank_counter(dev, pipe) && --count > 0); - if (dev->max_vblank_count != 0) { + if (max_vblank_count) { /* trust the hw counter when it's around */ - diff = (cur_vblank - vblank->last) & dev->max_vblank_count; + diff = (cur_vblank - vblank->last) & max_vblank_count; } else if (rc && framedur_ns) { u64 diff_ns = ktime_to_ns(ktime_sub(t_vblank, vblank->time)); @@ -1204,6 +1212,37 @@ void drm_crtc_vblank_reset(struct drm_crtc *crtc) } EXPORT_SYMBOL(drm_crtc_vblank_reset); +/** + * drm_crtc_set_max_vblank_count - configure the hw max vblank counter value + * @crtc: CRTC in question + * @max_vblank_count: max hardware vblank counter value + * + * Update the maximum hardware vblank counter value for @crtc + * at runtime. Useful for hardware where the operation of the + * hardware vblank counter depends on the currently active + * display configuration. + * + * For example, if the hardware vblank counter does not work + * when a specific connector is active the maximum can be set + * to zero. And when that specific connector isn't active the + * maximum can again be set to the appropriate non-zero value. + * + * If used, must be called before drm_vblank_on(). + */ +void drm_crtc_set_max_vblank_count(struct drm_crtc *crtc, + u32 max_vblank_count) +{ + struct drm_device *dev = crtc->dev; + unsigned int pipe = drm_crtc_index(crtc); + struct drm_vblank_crtc *vblank = &dev->vblank[pipe]; + + WARN_ON(dev->max_vblank_count); + WARN_ON(!READ_ONCE(vblank->inmodeset)); + + vblank->max_vblank_count = max_vblank_count; +} +EXPORT_SYMBOL(drm_crtc_set_max_vblank_count); + /** * drm_crtc_vblank_on - enable vblank events on a CRTC * @crtc: CRTC in question diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index a6f8e5abb66f..d5e092dccf3e 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -240,6 +240,12 @@ struct drm_device { * races and imprecision over longer time periods, hence exposing a * hardware vblank counter is always recommended. * + * This is the statically configured device wide maximum. The driver + * can instead choose to use a runtime configurable per-crtc value + * &drm_vblank_crtc.max_vblank_count, in which case @max_vblank_count + * must be left at zero. See drm_crtc_set_max_vblank_count() on how + * to use the per-crtc value. + * * If non-zero, &drm_crtc_funcs.get_vblank_counter must be set. */ u32 max_vblank_count; diff --git a/include/drm/drm_vblank.h b/include/drm/drm_vblank.h index 6ad9630d4f48..e528bb2f659d 100644 --- a/include/drm/drm_vblank.h +++ b/include/drm/drm_vblank.h @@ -128,6 +128,26 @@ struct drm_vblank_crtc { * @last: Protected by &drm_device.vbl_lock, used for wraparound handling. */ u32 last; + /** + * @max_vblank_count: + * + * Maximum value of the vblank registers for this crtc. This value +1 + * will result in a wrap-around of the vblank register. It is used + * by the vblank core to handle wrap-arounds. + * + * If set to zero the vblank core will try to guess the elapsed vblanks + * between times when the vblank interrupt is disabled through + * high-precision timestamps. That approach is suffering from small + * races and imprecision over longer time periods, hence exposing a + * hardware vblank counter is always recommended. + * + * This is the runtime configurable per-crtc maximum set through + * drm_crtc_set_max_vblank_count(). If this is used the driver + * must leave the device wide &drm_device.max_vblank_count at zero. + * + * If non-zero, &drm_crtc_funcs.get_vblank_counter must be set. + */ + u32 max_vblank_count; /** * @inmodeset: Tracks whether the vblank is disabled due to a modeset. * For legacy driver bit 2 additionally tracks whether an additional @@ -206,4 +226,6 @@ bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, void drm_calc_timestamping_constants(struct drm_crtc *crtc, const struct drm_display_mode *mode); wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc); +void drm_crtc_set_max_vblank_count(struct drm_crtc *crtc, + u32 max_vblank_count); #endif -- cgit v1.2.3-71-gd317 From 2db8ebca1f6c158d0d439ebec4d4b9924c4c3d3c Mon Sep 17 00:00:00 2001 From: Matteo Franchin Date: Wed, 9 Jan 2019 15:58:37 +0000 Subject: drm/fourcc: Add modifier defininitions for AFBC 1.3 This commit adds definitions of format modifiers for version 1.3 of the Arm Framebuffer Compression (AFBC). Signed-off-by: Matteo Franchin Signed-off-by: Ayan Kumar Halder Reviewed-by: Brian Starkey Link: https://patchwork.freedesktop.org/patch/277333/ --- include/uapi/drm/drm_fourcc.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include') diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 0b44260a5ee9..41106c835747 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -581,10 +581,18 @@ extern "C" { * Indicates the superblock size(s) used for the AFBC buffer. The buffer * size (in pixels) must be aligned to a multiple of the superblock size. * Four lowest significant bits(LSBs) are reserved for block size. + * + * Where one superblock size is specified, it applies to all planes of the + * buffer (e.g. 16x16, 32x8). When multiple superblock sizes are specified, + * the first applies to the Luma plane and the second applies to the Chroma + * plane(s). e.g. (32x8_64x4 means 32x8 Luma, with 64x4 Chroma). + * Multiple superblock sizes are only valid for multi-plane YCbCr formats. */ #define AFBC_FORMAT_MOD_BLOCK_SIZE_MASK 0xf #define AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 (1ULL) #define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 (2ULL) +#define AFBC_FORMAT_MOD_BLOCK_SIZE_64x4 (3ULL) +#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4 (4ULL) /* * AFBC lossless colorspace transform @@ -644,6 +652,21 @@ extern "C" { */ #define AFBC_FORMAT_MOD_SC (1ULL << 9) +/* + * AFBC double-buffer + * + * Indicates that the buffer is allocated in a layout safe for front-buffer + * rendering. + */ +#define AFBC_FORMAT_MOD_DB (1ULL << 10) + +/* + * AFBC buffer content hints + * + * Indicates that the buffer includes per-superblock content hints. + */ +#define AFBC_FORMAT_MOD_BCH (1ULL << 11) + #if defined(__cplusplus) } #endif -- cgit v1.2.3-71-gd317 From a3004db01f85c3f6dc400c9dc663d91b9b3899b4 Mon Sep 17 00:00:00 2001 From: Shayenne Moura Date: Fri, 11 Jan 2019 12:47:29 -0200 Subject: drm: Complete remove drm_mode_object dependency This patch finalizes the KMS cleanup task dependency from drm_display_mode. It removes the use of drm_mode_object from drm_display_mode struct and it removes the use of base.id and base.type from drm_display_mode struct print string. Signed-off-by: Shayenne Moura Reviewed-by: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/f40e904e665fe3e3ae3ae86e837024bee3b8ca6d.1547214023.git.shayenneluzmoura@gmail.com --- include/drm/drm_modes.h | 21 +++------------------ 1 file changed, 3 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h index baded6514456..be4fed97e727 100644 --- a/include/drm/drm_modes.h +++ b/include/drm/drm_modes.h @@ -136,8 +136,7 @@ enum drm_mode_status { .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \ .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \ .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \ - .vscan = (vs), .flags = (f), \ - .base.type = DRM_MODE_OBJECT_MODE + .vscan = (vs), .flags = (f) #define CRTC_INTERLACE_HALVE_V (1 << 0) /* halve V values for interlacing */ #define CRTC_STEREO_DOUBLE (1 << 1) /* adjust timings for stereo modes */ @@ -213,20 +212,6 @@ struct drm_display_mode { */ struct list_head head; - /** - * @base: - * - * A display mode is a normal modeset object, possibly including public - * userspace id. - * - * FIXME: - * - * This can probably be removed since the entire concept of userspace - * managing modes explicitly has never landed in upstream kernel mode - * setting support. - */ - struct drm_mode_object base; - /** * @name: * @@ -429,14 +414,14 @@ struct drm_display_mode { /** * DRM_MODE_FMT - printf string for &struct drm_display_mode */ -#define DRM_MODE_FMT "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x" +#define DRM_MODE_FMT "\"%s\": %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x" /** * DRM_MODE_ARG - printf arguments for &struct drm_display_mode * @m: display mode */ #define DRM_MODE_ARG(m) \ - (m)->base.id, (m)->name, (m)->vrefresh, (m)->clock, \ + (m)->name, (m)->vrefresh, (m)->clock, \ (m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \ (m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \ (m)->type, (m)->flags -- cgit v1.2.3-71-gd317 From 94520db52fc0e931327bb77fe79a952a0e9dd2b0 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 15 Jan 2019 22:48:45 +0100 Subject: drm: fix alpha build after drm_util.h change 0-DAY reported the following bug: tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next head: 21376e2c3c5bad5e87ba700c055c8a8235c2bfd5 commit: e9eafcb589213395232084a2378e2e90f67feb29 [1/2] drm: move drm_can_sleep() to drm_util.h config: alpha-allmodconfig (attached as .config) ... In file included from include/linux/irqflags.h:16:0, from include/drm/drm_util.h:35, from drivers/gpu/drm/qxl/qxl_cmd.c:28: >> arch/alpha/include/asm/irqflags.h:58:15: error: unknown type name 'bool' static inline bool arch_irqs_disabled_flags(unsigned long flags) ^~~~ And later following bug: tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next head: 21376e2c3c5bad5e87ba700c055c8a8235c2bfd5 commit: e9eafcb589213395232084a2378e2e90f67feb29 [1/2] drm: move drm_can_sleep() to drm_util.h config: ia64-allyesconfig (attached as .config) ... In file included from arch/ia64/include/asm/irqflags.h:14, from include/linux/irqflags.h:16, from include/drm/drm_util.h:35, from drivers/gpu/drm/qxl/qxl_cmd.c:28: arch/ia64/include/asm/pal.h: In function 'ia64_pal_tr_read': arch/ia64/include/asm/pal.h:1703:64: error: implicit declaration of function 'ia64_tpa'; did you mean 'ia64_pal'? [-Werror=implicit-function-declaration] PAL_CALL_PHYS_STK(iprv, PAL_VM_TR_READ, reg_num, tr_type,(u64)ia64_tpa(tr_buffer)); ^~~~~~~~ ... So we have a situation where we do not pull in when building for alpha and for ia64 we need even more definitions are required. Two invasive fixes where considered: - Change all declarations of arch_irqs_disabled_flags() to use bool - Add include of to all files that uses bool for arch_irqs_disabled_flags To invasive with a too high pain/benefit ratio, so dropped. They would not cover ia64 either. Some less invasive fixes was also considered: - Add include of to drm_util.h - Add include of to drm_util.h The first was dropped as this did not cover the ia64 case. The latter was considered the best option as there could be other similar cases and we would like the header files below include/drm/ to be selfcontained. So we end up pulling in a lot of stuff not needed, but this is the price we pay in drm/ because the kernel headers are not all selfcontained. While at it, ordred the includefiles in drm_util in alphabetical order. Build tested with alpha,ia64,arm,x86 with allmodconfig and allyesconfig. v2: - fix ia64 build, changed to include interrupt.h - sort include files alphabetically Fixes: 733748ac37b45 ("drm: move drm_can_sleep() to drm_util.h") Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190115214845.8117-1-sam@ravnborg.org --- include/drm/drm_util.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/drm/drm_util.h b/include/drm/drm_util.h index 0500da65b1d1..8163d35f8327 100644 --- a/include/drm/drm_util.h +++ b/include/drm/drm_util.h @@ -32,9 +32,9 @@ * Macros and inline functions that does not naturally belong in other places */ -#include -#include +#include #include +#include #include /* -- cgit v1.2.3-71-gd317 From 3725cd0957615f26aef9557f72a327a75ca9a150 Mon Sep 17 00:00:00 2001 From: Jonathan Corbet Date: Wed, 16 Jan 2019 15:34:36 -0700 Subject: dma-buf: Fix kerneldoc comment for struct dma_fence_array The kerneldoc comment for struct dma_fence_array lacks a description of the "work" member, leading to this docs-build warning: ./include/linux/dma-fence-array.h:54: warning: Function parameter or member 'work' not described in 'dma_fence_array' Add a description and make the warning go away. Signed-off-by: Jonathan Corbet Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190116153436.3b244cda@lwn.net --- include/linux/dma-fence-array.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h index bc8940ca280d..c0ff417b4770 100644 --- a/include/linux/dma-fence-array.h +++ b/include/linux/dma-fence-array.h @@ -40,6 +40,7 @@ struct dma_fence_array_cb { * @num_fences: number of fences in the array * @num_pending: fences in the array still pending * @fences: array of the fences + * @work: internal irq_work function */ struct dma_fence_array { struct dma_fence base; -- cgit v1.2.3-71-gd317 From 2de304b44d51b7d84d11b4d0942563fee5178c0e Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Mon, 14 Jan 2019 13:10:59 +0100 Subject: drm/cma-helper: Remove unused fbdev code MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit CMA helper drivers have been converted to drm_fbdev_generic_setup() so the fbdev code can be removed. v3: Remove CMA specific conditional in the generic fbdev client v2: Clean up the includes some more (Laurent) Cc: Laurent Pinchart Signed-off-by: Noralf Trønnes Acked-by: Sam Ravnborg Reviewed-by: Laurent Pinchart Link: https://patchwork.freedesktop.org/patch/msgid/20190114121059.20704-1-noralf@tronnes.org --- drivers/gpu/drm/Kconfig | 4 -- drivers/gpu/drm/drm_fb_cma_helper.c | 137 +----------------------------------- drivers/gpu/drm/drm_fb_helper.c | 12 +--- include/drm/drm_fb_cma_helper.h | 22 ------ 4 files changed, 4 insertions(+), 171 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 4385f00e1d05..bd943a71756c 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -170,10 +170,6 @@ config DRM_KMS_CMA_HELPER bool depends on DRM select DRM_GEM_CMA_HELPER - select DRM_KMS_FB_HELPER - select FB_SYS_FILLRECT - select FB_SYS_COPYAREA - select FB_SYS_IMAGEBLIT help Choose this if you need the KMS CMA helper functions diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c index 5b516615881a..5f8074ffe7d9 100644 --- a/drivers/gpu/drm/drm_fb_cma_helper.c +++ b/drivers/gpu/drm/drm_fb_cma_helper.c @@ -17,20 +17,13 @@ * GNU General Public License for more details. */ -#include -#include -#include +#include #include #include #include -#include -#include +#include #include -struct drm_fbdev_cma { - struct drm_fb_helper fb_helper; -}; - /** * DOC: framebuffer cma helper functions * @@ -39,16 +32,8 @@ struct drm_fbdev_cma { * * drm_gem_fb_create() is used in the &drm_mode_config_funcs.fb_create * callback function to create a cma backed framebuffer. - * - * An fbdev framebuffer backed by cma is also available by calling - * drm_fb_cma_fbdev_init(). drm_fb_cma_fbdev_fini() tears it down. */ -static inline struct drm_fbdev_cma *to_fbdev_cma(struct drm_fb_helper *helper) -{ - return container_of(helper, struct drm_fbdev_cma, fb_helper); -} - /** * drm_fb_cma_get_gem_obj() - Get CMA GEM object for framebuffer * @fb: The framebuffer @@ -119,121 +104,3 @@ dma_addr_t drm_fb_cma_get_gem_addr(struct drm_framebuffer *fb, return paddr; } EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_addr); - -/** - * drm_fb_cma_fbdev_init() - Allocate and initialize fbdev emulation - * @dev: DRM device - * @preferred_bpp: Preferred bits per pixel for the device. - * @dev->mode_config.preferred_depth is used if this is zero. - * @max_conn_count: Maximum number of connectors. - * @dev->mode_config.num_connector is used if this is zero. - * - * Returns: - * Zero on success or negative error code on failure. - */ -int drm_fb_cma_fbdev_init(struct drm_device *dev, unsigned int preferred_bpp, - unsigned int max_conn_count) -{ - struct drm_fbdev_cma *fbdev_cma; - - /* dev->fb_helper will indirectly point to fbdev_cma after this call */ - fbdev_cma = drm_fbdev_cma_init(dev, preferred_bpp, max_conn_count); - return PTR_ERR_OR_ZERO(fbdev_cma); -} -EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_init); - -/** - * drm_fb_cma_fbdev_fini() - Teardown fbdev emulation - * @dev: DRM device - */ -void drm_fb_cma_fbdev_fini(struct drm_device *dev) -{ - if (dev->fb_helper) - drm_fbdev_cma_fini(to_fbdev_cma(dev->fb_helper)); -} -EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_fini); - -static const struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = { - .fb_probe = drm_fb_helper_generic_probe, -}; - -/** - * drm_fbdev_cma_init() - Allocate and initializes a drm_fbdev_cma struct - * @dev: DRM device - * @preferred_bpp: Preferred bits per pixel for the device - * @max_conn_count: Maximum number of connectors - * - * Returns a newly allocated drm_fbdev_cma struct or a ERR_PTR. - */ -struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev, - unsigned int preferred_bpp, unsigned int max_conn_count) -{ - struct drm_fbdev_cma *fbdev_cma; - struct drm_fb_helper *fb_helper; - int ret; - - fbdev_cma = kzalloc(sizeof(*fbdev_cma), GFP_KERNEL); - if (!fbdev_cma) - return ERR_PTR(-ENOMEM); - - fb_helper = &fbdev_cma->fb_helper; - - ret = drm_client_init(dev, &fb_helper->client, "fbdev", NULL); - if (ret) - goto err_free; - - ret = drm_fb_helper_fbdev_setup(dev, fb_helper, &drm_fb_cma_helper_funcs, - preferred_bpp, max_conn_count); - if (ret) - goto err_client_put; - - drm_client_add(&fb_helper->client); - - return fbdev_cma; - -err_client_put: - drm_client_release(&fb_helper->client); -err_free: - kfree(fbdev_cma); - - return ERR_PTR(ret); -} -EXPORT_SYMBOL_GPL(drm_fbdev_cma_init); - -/** - * drm_fbdev_cma_fini() - Free drm_fbdev_cma struct - * @fbdev_cma: The drm_fbdev_cma struct - */ -void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma) -{ - drm_fb_helper_unregister_fbi(&fbdev_cma->fb_helper); - /* All resources have now been freed by drm_fbdev_fb_destroy() */ -} -EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini); - -/** - * drm_fbdev_cma_restore_mode() - Restores initial framebuffer mode - * @fbdev_cma: The drm_fbdev_cma struct, may be NULL - * - * This function is usually called from the &drm_driver.lastclose callback. - */ -void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma) -{ - if (fbdev_cma) - drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev_cma->fb_helper); -} -EXPORT_SYMBOL_GPL(drm_fbdev_cma_restore_mode); - -/** - * drm_fbdev_cma_hotplug_event() - Poll for hotpulug events - * @fbdev_cma: The drm_fbdev_cma struct, may be NULL - * - * This function is usually called from the &drm_mode_config.output_poll_changed - * callback. - */ -void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma) -{ - if (fbdev_cma) - drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper); -} -EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event); diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index ca706fb1d975..31fcf94bf825 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -3042,16 +3042,8 @@ static void drm_fbdev_cleanup(struct drm_fb_helper *fb_helper) static void drm_fbdev_release(struct drm_fb_helper *fb_helper) { drm_fbdev_cleanup(fb_helper); - - /* - * FIXME: - * Remove conditional when all CMA drivers have been moved over to using - * drm_fbdev_generic_setup(). - */ - if (fb_helper->client.funcs) { - drm_client_release(&fb_helper->client); - kfree(fb_helper); - } + drm_client_release(&fb_helper->client); + kfree(fb_helper); } /* diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h index 8dbbe1eece1b..4becb09975a4 100644 --- a/include/drm/drm_fb_cma_helper.h +++ b/include/drm/drm_fb_cma_helper.h @@ -2,31 +2,9 @@ #ifndef __DRM_FB_CMA_HELPER_H__ #define __DRM_FB_CMA_HELPER_H__ -struct drm_fbdev_cma; -struct drm_gem_cma_object; - -struct drm_fb_helper_surface_size; -struct drm_framebuffer_funcs; -struct drm_fb_helper_funcs; struct drm_framebuffer; -struct drm_fb_helper; -struct drm_device; -struct drm_file; -struct drm_mode_fb_cmd2; -struct drm_plane; struct drm_plane_state; -int drm_fb_cma_fbdev_init(struct drm_device *dev, unsigned int preferred_bpp, - unsigned int max_conn_count); -void drm_fb_cma_fbdev_fini(struct drm_device *dev); - -struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev, - unsigned int preferred_bpp, unsigned int max_conn_count); -void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma); - -void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma); -void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma); - struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb, unsigned int plane); -- cgit v1.2.3-71-gd317 From dbd62e16fd53d37093a4695692ceac1a470f0b3f Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Tue, 15 Jan 2019 05:36:39 +0100 Subject: drm/gem-fb-helper: Add drm_gem_fb_create_with_dirty() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This adds a .fb_create helper that sets the .dirty callback to drm_atomic_helper_dirtyfb(). v2: Improve docs (Daniel) Signed-off-by: Noralf Trønnes Acked-by: Daniel Vetter Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-2-noralf@tronnes.org --- drivers/gpu/drm/drm_gem_framebuffer_helper.c | 50 ++++++++++++++++++++++++---- include/drm/drm_gem_framebuffer_helper.h | 3 ++ 2 files changed, 47 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c index acb466d25afc..65edb1ccb185 100644 --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -136,10 +137,9 @@ EXPORT_SYMBOL(drm_gem_fb_create_handle); * @mode_cmd: Metadata from the userspace framebuffer creation request * @funcs: vtable to be used for the new framebuffer object * - * This can be used to set &drm_framebuffer_funcs for drivers that need the - * &drm_framebuffer_funcs.dirty callback. Use drm_gem_fb_create() if you don't - * need to change &drm_framebuffer_funcs. - * The function does buffer size validation. + * This function can be used to set &drm_framebuffer_funcs for drivers that need + * custom framebuffer callbacks. Use drm_gem_fb_create() if you don't need to + * change &drm_framebuffer_funcs. The function does buffer size validation. * * Returns: * Pointer to a &drm_framebuffer on success or an error pointer on failure. @@ -215,8 +215,8 @@ static const struct drm_framebuffer_funcs drm_gem_fb_funcs = { * * If your hardware has special alignment or pitch requirements these should be * checked before calling this function. The function does buffer size - * validation. Use drm_gem_fb_create_with_funcs() if you need to set - * &drm_framebuffer_funcs.dirty. + * validation. Use drm_gem_fb_create_with_dirty() if you need framebuffer + * flushing. * * Drivers can use this as their &drm_mode_config_funcs.fb_create callback. * The ADDFB2 IOCTL calls into this callback. @@ -233,6 +233,44 @@ drm_gem_fb_create(struct drm_device *dev, struct drm_file *file, } EXPORT_SYMBOL_GPL(drm_gem_fb_create); +static const struct drm_framebuffer_funcs drm_gem_fb_funcs_dirtyfb = { + .destroy = drm_gem_fb_destroy, + .create_handle = drm_gem_fb_create_handle, + .dirty = drm_atomic_helper_dirtyfb, +}; + +/** + * drm_gem_fb_create_with_dirty() - Helper function for the + * &drm_mode_config_funcs.fb_create callback + * @dev: DRM device + * @file: DRM file that holds the GEM handle(s) backing the framebuffer + * @mode_cmd: Metadata from the userspace framebuffer creation request + * + * This function creates a new framebuffer object described by + * &drm_mode_fb_cmd2. This description includes handles for the buffer(s) + * backing the framebuffer. drm_atomic_helper_dirtyfb() is used for the dirty + * callback giving framebuffer flushing through the atomic machinery. Use + * drm_gem_fb_create() if you don't need the dirty callback. + * The function does buffer size validation. + * + * Drivers should also call drm_plane_enable_fb_damage_clips() on all planes + * to enable userspace to use damage clips also with the ATOMIC IOCTL. + * + * Drivers can use this as their &drm_mode_config_funcs.fb_create callback. + * The ADDFB2 IOCTL calls into this callback. + * + * Returns: + * Pointer to a &drm_framebuffer on success or an error pointer on failure. + */ +struct drm_framebuffer * +drm_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + return drm_gem_fb_create_with_funcs(dev, file, mode_cmd, + &drm_gem_fb_funcs_dirtyfb); +} +EXPORT_SYMBOL_GPL(drm_gem_fb_create_with_dirty); + /** * drm_gem_fb_prepare_fb() - Prepare a GEM backed framebuffer * @plane: Plane diff --git a/include/drm/drm_gem_framebuffer_helper.h b/include/drm/drm_gem_framebuffer_helper.h index a38de7eb55b4..7f307e834eef 100644 --- a/include/drm/drm_gem_framebuffer_helper.h +++ b/include/drm/drm_gem_framebuffer_helper.h @@ -25,6 +25,9 @@ drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file, struct drm_framebuffer * drm_gem_fb_create(struct drm_device *dev, struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd); +struct drm_framebuffer * +drm_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd); int drm_gem_fb_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state); -- cgit v1.2.3-71-gd317 From 255f6fe736f4ed78e0f0eac1d6188137db798b51 Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Tue, 15 Jan 2019 05:36:40 +0100 Subject: drm/damage-helper: Add drm_atomic_helper_damage_merged() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Useful for drivers that only care about the combined damage. v2: Remove unnecessary clearing of damage clips Cc: Deepak Rawat Signed-off-by: Noralf Trønnes Acked-by: Daniel Vetter Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-3-noralf@tronnes.org --- drivers/gpu/drm/drm_damage_helper.c | 41 +++++++++++++++++++++++++++++++++++++ include/drm/drm_damage_helper.h | 3 +++ 2 files changed, 44 insertions(+) (limited to 'include') diff --git a/drivers/gpu/drm/drm_damage_helper.c b/drivers/gpu/drm/drm_damage_helper.c index 31032407254d..e16aa5ae00b4 100644 --- a/drivers/gpu/drm/drm_damage_helper.c +++ b/drivers/gpu/drm/drm_damage_helper.c @@ -333,3 +333,44 @@ drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter, return ret; } EXPORT_SYMBOL(drm_atomic_helper_damage_iter_next); + +/** + * drm_atomic_helper_damage_merged - Merged plane damage + * @old_state: Old plane state for validation. + * @state: Plane state from which to iterate the damage clips. + * @rect: Returns the merged damage rectangle + * + * This function merges any valid plane damage clips into one rectangle and + * returns it in @rect. + * + * For details see: drm_atomic_helper_damage_iter_init() and + * drm_atomic_helper_damage_iter_next(). + * + * Returns: + * True if there is valid plane damage otherwise false. + */ +bool drm_atomic_helper_damage_merged(const struct drm_plane_state *old_state, + struct drm_plane_state *state, + struct drm_rect *rect) +{ + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + bool valid = false; + + rect->x1 = INT_MAX; + rect->y1 = INT_MAX; + rect->x2 = 0; + rect->y2 = 0; + + drm_atomic_helper_damage_iter_init(&iter, old_state, state); + drm_atomic_for_each_plane_damage(&iter, &clip) { + rect->x1 = min(rect->x1, clip.x1); + rect->y1 = min(rect->y1, clip.y1); + rect->x2 = max(rect->x2, clip.x2); + rect->y2 = max(rect->y2, clip.y2); + valid = true; + } + + return valid; +} +EXPORT_SYMBOL(drm_atomic_helper_damage_merged); diff --git a/include/drm/drm_damage_helper.h b/include/drm/drm_damage_helper.h index 4487660b26b8..40c34a5bf149 100644 --- a/include/drm/drm_damage_helper.h +++ b/include/drm/drm_damage_helper.h @@ -78,6 +78,9 @@ drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter, bool drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter, struct drm_rect *rect); +bool drm_atomic_helper_damage_merged(const struct drm_plane_state *old_state, + struct drm_plane_state *state, + struct drm_rect *rect); /** * drm_helper_get_plane_damage_clips - Returns damage clips in &drm_rect. -- cgit v1.2.3-71-gd317 From b051b3459bbae907ef068bcd8b62f73f09ea5016 Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Tue, 15 Jan 2019 05:36:41 +0100 Subject: drm/tinydrm: Use struct drm_rect MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This prepares for the switch to drm_atomic_helper_dirtyfb() in the next patch. The damage helper returns a drm_rect so switch to that everywhere including using a pointer in the dirty functions. This is a non-functional change except for the debug print which looks a bit different. Signed-off-by: Noralf Trønnes Acked-by: Daniel Vetter Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-4-noralf@tronnes.org --- drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 19 ++++++------ drivers/gpu/drm/tinydrm/ili9225.c | 43 +++++++++++++------------- drivers/gpu/drm/tinydrm/mipi-dbi.c | 21 +++++++------ drivers/gpu/drm/tinydrm/repaper.c | 3 +- drivers/gpu/drm/tinydrm/st7586.c | 27 ++++++++-------- include/drm/tinydrm/mipi-dbi.h | 3 +- include/drm/tinydrm/tinydrm-helpers.h | 11 ++++--- 7 files changed, 67 insertions(+), 60 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c index bf6bfbc5d412..d0ece6ad4a1c 100644 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -41,7 +42,7 @@ MODULE_PARM_DESC(spi_max, "Set a lower SPI max transfer size"); * Returns: * true if it's a full clip, false otherwise */ -bool tinydrm_merge_clips(struct drm_clip_rect *dst, +bool tinydrm_merge_clips(struct drm_rect *dst, struct drm_clip_rect *src, unsigned int num_clips, unsigned int flags, u32 max_width, u32 max_height) { @@ -63,10 +64,10 @@ bool tinydrm_merge_clips(struct drm_clip_rect *dst, for (i = 0; i < num_clips; i++) { if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) i++; - dst->x1 = min(dst->x1, src[i].x1); - dst->x2 = max(dst->x2, src[i].x2); - dst->y1 = min(dst->y1, src[i].y1); - dst->y2 = max(dst->y2, src[i].y2); + dst->x1 = min_t(int, dst->x1, src[i].x1); + dst->x2 = max_t(int, dst->x2, src[i].x2); + dst->y1 = min_t(int, dst->y1, src[i].y1); + dst->y2 = max_t(int, dst->y2, src[i].y2); } if (dst->x2 > max_width || dst->y2 > max_height || @@ -122,7 +123,7 @@ EXPORT_SYMBOL(tinydrm_fb_dirty); * @clip: Clip rectangle area to copy */ void tinydrm_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip) + struct drm_rect *clip) { unsigned int cpp = drm_format_plane_cpp(fb->format->format, 0); unsigned int pitch = fb->pitches[0]; @@ -146,7 +147,7 @@ EXPORT_SYMBOL(tinydrm_memcpy); * @clip: Clip rectangle area to copy */ void tinydrm_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip) + struct drm_rect *clip) { size_t len = (clip->x2 - clip->x1) * sizeof(u16); unsigned int x, y; @@ -186,7 +187,7 @@ EXPORT_SYMBOL(tinydrm_swab16); */ void tinydrm_xrgb8888_to_rgb565(u16 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip, bool swap) + struct drm_rect *clip, bool swap) { size_t len = (clip->x2 - clip->x1) * sizeof(u32); unsigned int x, y; @@ -235,7 +236,7 @@ EXPORT_SYMBOL(tinydrm_xrgb8888_to_rgb565); * ITU BT.601 is used for the RGB -> luma (brightness) conversion. */ void tinydrm_xrgb8888_to_gray8(u8 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip) + struct drm_rect *clip) { unsigned int len = (clip->x2 - clip->x1) * sizeof(u32); unsigned int x, y; diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c index b0ad58b97227..ad644069089f 100644 --- a/drivers/gpu/drm/tinydrm/ili9225.c +++ b/drivers/gpu/drm/tinydrm/ili9225.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -84,7 +85,8 @@ static int ili9225_fb_dirty(struct drm_framebuffer *fb, struct tinydrm_device *tdev = fb->dev->dev_private; struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); bool swap = mipi->swap_bytes; - struct drm_clip_rect clip; + struct drm_rect clip; + struct drm_rect *rect = &clip; u16 x_start, y_start; u16 x1, x2, y1, y2; int ret = 0; @@ -97,13 +99,12 @@ static int ili9225_fb_dirty(struct drm_framebuffer *fb, full = tinydrm_merge_clips(&clip, clips, num_clips, flags, fb->width, fb->height); - DRM_DEBUG("Flushing [FB:%d] x1=%u, x2=%u, y1=%u, y2=%u\n", fb->base.id, - clip.x1, clip.x2, clip.y1, clip.y2); + DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect)); if (!mipi->dc || !full || swap || fb->format->format == DRM_FORMAT_XRGB8888) { tr = mipi->tx_buf; - ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, &clip, swap); + ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, rect, swap); if (ret) return ret; } else { @@ -112,34 +113,34 @@ static int ili9225_fb_dirty(struct drm_framebuffer *fb, switch (mipi->rotation) { default: - x1 = clip.x1; - x2 = clip.x2 - 1; - y1 = clip.y1; - y2 = clip.y2 - 1; + x1 = rect->x1; + x2 = rect->x2 - 1; + y1 = rect->y1; + y2 = rect->y2 - 1; x_start = x1; y_start = y1; break; case 90: - x1 = clip.y1; - x2 = clip.y2 - 1; - y1 = fb->width - clip.x2; - y2 = fb->width - clip.x1 - 1; + x1 = rect->y1; + x2 = rect->y2 - 1; + y1 = fb->width - rect->x2; + y2 = fb->width - rect->x1 - 1; x_start = x1; y_start = y2; break; case 180: - x1 = fb->width - clip.x2; - x2 = fb->width - clip.x1 - 1; - y1 = fb->height - clip.y2; - y2 = fb->height - clip.y1 - 1; + x1 = fb->width - rect->x2; + x2 = fb->width - rect->x1 - 1; + y1 = fb->height - rect->y2; + y2 = fb->height - rect->y1 - 1; x_start = x2; y_start = y2; break; case 270: - x1 = fb->height - clip.y2; - x2 = fb->height - clip.y1 - 1; - y1 = clip.x1; - y2 = clip.x2 - 1; + x1 = fb->height - rect->y2; + x2 = fb->height - rect->y1 - 1; + y1 = rect->x1; + y2 = rect->x2 - 1; x_start = x2; y_start = y1; break; @@ -154,7 +155,7 @@ static int ili9225_fb_dirty(struct drm_framebuffer *fb, ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, y_start); ret = mipi_dbi_command_buf(mipi, ILI9225_WRITE_DATA_TO_GRAM, tr, - (clip.x2 - clip.x1) * (clip.y2 - clip.y1) * 2); + (rect->x2 - rect->x1) * (rect->y2 - rect->y1) * 2); return ret; } diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/tinydrm/mipi-dbi.c index 10294e1283dd..1e7e8cfc99f0 100644 --- a/drivers/gpu/drm/tinydrm/mipi-dbi.c +++ b/drivers/gpu/drm/tinydrm/mipi-dbi.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -172,7 +173,7 @@ EXPORT_SYMBOL(mipi_dbi_command_buf); * Zero on success, negative error code on failure. */ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, - struct drm_clip_rect *clip, bool swap) + struct drm_rect *clip, bool swap) { struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; @@ -221,7 +222,8 @@ static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb, struct tinydrm_device *tdev = fb->dev->dev_private; struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); bool swap = mipi->swap_bytes; - struct drm_clip_rect clip; + struct drm_rect clip; + struct drm_rect *rect = &clip; int ret = 0; bool full; void *tr; @@ -232,13 +234,12 @@ static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb, full = tinydrm_merge_clips(&clip, clips, num_clips, flags, fb->width, fb->height); - DRM_DEBUG("Flushing [FB:%d] x1=%u, x2=%u, y1=%u, y2=%u\n", fb->base.id, - clip.x1, clip.x2, clip.y1, clip.y2); + DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect)); if (!mipi->dc || !full || swap || fb->format->format == DRM_FORMAT_XRGB8888) { tr = mipi->tx_buf; - ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, &clip, swap); + ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, rect, swap); if (ret) return ret; } else { @@ -246,14 +247,14 @@ static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb, } mipi_dbi_command(mipi, MIPI_DCS_SET_COLUMN_ADDRESS, - (clip.x1 >> 8) & 0xFF, clip.x1 & 0xFF, - ((clip.x2 - 1) >> 8) & 0xFF, (clip.x2 - 1) & 0xFF); + (rect->x1 >> 8) & 0xff, rect->x1 & 0xff, + ((rect->x2 - 1) >> 8) & 0xff, (rect->x2 - 1) & 0xff); mipi_dbi_command(mipi, MIPI_DCS_SET_PAGE_ADDRESS, - (clip.y1 >> 8) & 0xFF, clip.y1 & 0xFF, - ((clip.y2 - 1) >> 8) & 0xFF, (clip.y2 - 1) & 0xFF); + (rect->y1 >> 8) & 0xff, rect->y1 & 0xff, + ((rect->y2 - 1) >> 8) & 0xff, (rect->y2 - 1) & 0xff); ret = mipi_dbi_command_buf(mipi, MIPI_DCS_WRITE_MEMORY_START, tr, - (clip.x2 - clip.x1) * (clip.y2 - clip.y1) * 2); + (rect->x2 - rect->x1) * (rect->y2 - rect->y1) * 2); return ret; } diff --git a/drivers/gpu/drm/tinydrm/repaper.c b/drivers/gpu/drm/tinydrm/repaper.c index b2a8f894946a..238515de449e 100644 --- a/drivers/gpu/drm/tinydrm/repaper.c +++ b/drivers/gpu/drm/tinydrm/repaper.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -532,7 +533,7 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb, struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; struct tinydrm_device *tdev = fb->dev->dev_private; struct repaper_epd *epd = epd_from_tinydrm(tdev); - struct drm_clip_rect clip; + struct drm_rect clip; u8 *buf = NULL; int ret = 0; diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c index bf518167760a..a52bc3b02606 100644 --- a/drivers/gpu/drm/tinydrm/st7586.c +++ b/drivers/gpu/drm/tinydrm/st7586.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -62,7 +63,7 @@ static const u8 st7586_lookup[] = { 0x7, 0x4, 0x2, 0x0 }; static void st7586_xrgb8888_to_gray332(u8 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip) + struct drm_rect *clip) { size_t len = (clip->x2 - clip->x1) * (clip->y2 - clip->y1); unsigned int x, y; @@ -88,7 +89,7 @@ static void st7586_xrgb8888_to_gray332(u8 *dst, void *vaddr, } static int st7586_buf_copy(void *dst, struct drm_framebuffer *fb, - struct drm_clip_rect *clip) + struct drm_rect *clip) { struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; @@ -118,7 +119,8 @@ static int st7586_fb_dirty(struct drm_framebuffer *fb, { struct tinydrm_device *tdev = fb->dev->dev_private; struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); - struct drm_clip_rect clip; + struct drm_rect clip; + struct drm_rect *rect = &clip; int start, end; int ret = 0; @@ -129,30 +131,29 @@ static int st7586_fb_dirty(struct drm_framebuffer *fb, fb->height); /* 3 pixels per byte, so grow clip to nearest multiple of 3 */ - clip.x1 = rounddown(clip.x1, 3); - clip.x2 = roundup(clip.x2, 3); + rect->x1 = rounddown(rect->x1, 3); + rect->x2 = roundup(rect->x2, 3); - DRM_DEBUG("Flushing [FB:%d] x1=%u, x2=%u, y1=%u, y2=%u\n", fb->base.id, - clip.x1, clip.x2, clip.y1, clip.y2); + DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect)); - ret = st7586_buf_copy(mipi->tx_buf, fb, &clip); + ret = st7586_buf_copy(mipi->tx_buf, fb, rect); if (ret) return ret; /* Pixels are packed 3 per byte */ - start = clip.x1 / 3; - end = clip.x2 / 3; + start = rect->x1 / 3; + end = rect->x2 / 3; mipi_dbi_command(mipi, MIPI_DCS_SET_COLUMN_ADDRESS, (start >> 8) & 0xFF, start & 0xFF, (end >> 8) & 0xFF, (end - 1) & 0xFF); mipi_dbi_command(mipi, MIPI_DCS_SET_PAGE_ADDRESS, - (clip.y1 >> 8) & 0xFF, clip.y1 & 0xFF, - (clip.y2 >> 8) & 0xFF, (clip.y2 - 1) & 0xFF); + (rect->y1 >> 8) & 0xFF, rect->y1 & 0xFF, + (rect->y2 >> 8) & 0xFF, (rect->y2 - 1) & 0xFF); ret = mipi_dbi_command_buf(mipi, MIPI_DCS_WRITE_MEMORY_START, (u8 *)mipi->tx_buf, - (end - start) * (clip.y2 - clip.y1)); + (end - start) * (rect->y2 - rect->y1)); return ret; } diff --git a/include/drm/tinydrm/mipi-dbi.h b/include/drm/tinydrm/mipi-dbi.h index b8ba58861986..b52f32897f23 100644 --- a/include/drm/tinydrm/mipi-dbi.h +++ b/include/drm/tinydrm/mipi-dbi.h @@ -14,6 +14,7 @@ #include +struct drm_rect; struct spi_device; struct gpio_desc; struct regulator; @@ -80,7 +81,7 @@ u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len); int mipi_dbi_command_read(struct mipi_dbi *mipi, u8 cmd, u8 *val); int mipi_dbi_command_buf(struct mipi_dbi *mipi, u8 cmd, u8 *data, size_t len); int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, - struct drm_clip_rect *clip, bool swap); + struct drm_rect *clip, bool swap); /** * mipi_dbi_command - MIPI DCS command with optional parameter(s) * @mipi: MIPI structure diff --git a/include/drm/tinydrm/tinydrm-helpers.h b/include/drm/tinydrm/tinydrm-helpers.h index 5b96f0b12c8c..8edb75df4e31 100644 --- a/include/drm/tinydrm/tinydrm-helpers.h +++ b/include/drm/tinydrm/tinydrm-helpers.h @@ -13,6 +13,7 @@ struct backlight_device; struct tinydrm_device; struct drm_clip_rect; +struct drm_rect; struct spi_transfer; struct spi_message; struct spi_device; @@ -33,7 +34,7 @@ static inline bool tinydrm_machine_little_endian(void) #endif } -bool tinydrm_merge_clips(struct drm_clip_rect *dst, +bool tinydrm_merge_clips(struct drm_rect *dst, struct drm_clip_rect *src, unsigned int num_clips, unsigned int flags, u32 max_width, u32 max_height); int tinydrm_fb_dirty(struct drm_framebuffer *fb, @@ -42,14 +43,14 @@ int tinydrm_fb_dirty(struct drm_framebuffer *fb, struct drm_clip_rect *clips, unsigned int num_clips); void tinydrm_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip); + struct drm_rect *clip); void tinydrm_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip); + struct drm_rect *clip); void tinydrm_xrgb8888_to_rgb565(u16 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip, bool swap); + struct drm_rect *clip, bool swap); void tinydrm_xrgb8888_to_gray8(u8 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_clip_rect *clip); + struct drm_rect *clip); size_t tinydrm_spi_max_transfer_size(struct spi_device *spi, size_t max_len); bool tinydrm_spi_bpw_supported(struct spi_device *spi, u8 bpw); -- cgit v1.2.3-71-gd317 From af74138160e194b8467f8cd6fd5afbb021f9a0f4 Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Tue, 15 Jan 2019 05:36:42 +0100 Subject: drm/tinydrm: Use damage helper for dirtyfb MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This switches to drm_atomic_helper_dirtyfb() as the framebuffer dirty handler. All flushing will now happen in the pipe functions. Also enable the damage plane property for all except repaper which can only do full updates. ili9225: This change made ili9225_init() equal to mipi_dbi_init() so use it. v3: Include vblank header (Sam) ili9225 and st7586 can't use mipi_dbi_enable_flush() (David) v2: Remove fb check in mipi_dbi_enable_flush() it can't be NULL (kbuild test robot) Cc: David Lechner Cc: Eric Anholt Signed-off-by: Noralf Trønnes Acked-by: Daniel Vetter Reviewed-by: Sam Ravnborg Tested-by: David Lechner Reviewed-by: David Lechner Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-5-noralf@tronnes.org --- drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 21 +---- drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 91 +------------------- drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c | 31 ------- drivers/gpu/drm/tinydrm/hx8357d.c | 2 +- drivers/gpu/drm/tinydrm/ili9225.c | 112 +++++++++---------------- drivers/gpu/drm/tinydrm/ili9341.c | 2 +- drivers/gpu/drm/tinydrm/mi0283qt.c | 2 +- drivers/gpu/drm/tinydrm/mipi-dbi.c | 79 +++++++++++------ drivers/gpu/drm/tinydrm/repaper.c | 40 +++++---- drivers/gpu/drm/tinydrm/st7586.c | 63 ++++++++------ drivers/gpu/drm/tinydrm/st7735r.c | 2 +- include/drm/tinydrm/mipi-dbi.h | 2 + include/drm/tinydrm/tinydrm-helpers.h | 11 +-- include/drm/tinydrm/tinydrm.h | 26 ------ 14 files changed, 165 insertions(+), 319 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c index aeb93eadb047..614f532ea89f 100644 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c @@ -39,31 +39,17 @@ * and registers the DRM device using devm_tinydrm_register(). */ -static struct drm_framebuffer * -tinydrm_fb_create(struct drm_device *drm, struct drm_file *file_priv, - const struct drm_mode_fb_cmd2 *mode_cmd) -{ - struct tinydrm_device *tdev = drm->dev_private; - - return drm_gem_fb_create_with_funcs(drm, file_priv, mode_cmd, - tdev->fb_funcs); -} - static const struct drm_mode_config_funcs tinydrm_mode_config_funcs = { - .fb_create = tinydrm_fb_create, + .fb_create = drm_gem_fb_create_with_dirty, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; static int tinydrm_init(struct device *parent, struct tinydrm_device *tdev, - const struct drm_framebuffer_funcs *fb_funcs, struct drm_driver *driver) { struct drm_device *drm; - mutex_init(&tdev->dirty_lock); - tdev->fb_funcs = fb_funcs; - /* * We don't embed drm_device, because that prevent us from using * devm_kzalloc() to allocate tinydrm_device in the driver since @@ -86,7 +72,6 @@ static int tinydrm_init(struct device *parent, struct tinydrm_device *tdev, static void tinydrm_fini(struct tinydrm_device *tdev) { drm_mode_config_cleanup(tdev->drm); - mutex_destroy(&tdev->dirty_lock); tdev->drm->dev_private = NULL; drm_dev_put(tdev->drm); } @@ -100,7 +85,6 @@ static void devm_tinydrm_release(void *data) * devm_tinydrm_init - Initialize tinydrm device * @parent: Parent device object * @tdev: tinydrm device - * @fb_funcs: Framebuffer functions * @driver: DRM driver * * This function initializes @tdev, the underlying DRM device and it's @@ -111,12 +95,11 @@ static void devm_tinydrm_release(void *data) * Zero on success, negative error code on failure. */ int devm_tinydrm_init(struct device *parent, struct tinydrm_device *tdev, - const struct drm_framebuffer_funcs *fb_funcs, struct drm_driver *driver) { int ret; - ret = tinydrm_init(parent, tdev, fb_funcs, driver); + ret = tinydrm_init(parent, tdev, driver); if (ret) return ret; diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c index d0ece6ad4a1c..2737b6fdadc8 100644 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c @@ -17,104 +17,15 @@ #include #include #include +#include #include #include -#include #include -#include static unsigned int spi_max; module_param(spi_max, uint, 0400); MODULE_PARM_DESC(spi_max, "Set a lower SPI max transfer size"); -/** - * tinydrm_merge_clips - Merge clip rectangles - * @dst: Destination clip rectangle - * @src: Source clip rectangle(s) - * @num_clips: Number of @src clip rectangles - * @flags: Dirty fb ioctl flags - * @max_width: Maximum width of @dst - * @max_height: Maximum height of @dst - * - * This function merges @src clip rectangle(s) into @dst. If @src is NULL, - * @max_width and @min_width is used to set a full @dst clip rectangle. - * - * Returns: - * true if it's a full clip, false otherwise - */ -bool tinydrm_merge_clips(struct drm_rect *dst, - struct drm_clip_rect *src, unsigned int num_clips, - unsigned int flags, u32 max_width, u32 max_height) -{ - unsigned int i; - - if (!src || !num_clips) { - dst->x1 = 0; - dst->x2 = max_width; - dst->y1 = 0; - dst->y2 = max_height; - return true; - } - - dst->x1 = ~0; - dst->y1 = ~0; - dst->x2 = 0; - dst->y2 = 0; - - for (i = 0; i < num_clips; i++) { - if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) - i++; - dst->x1 = min_t(int, dst->x1, src[i].x1); - dst->x2 = max_t(int, dst->x2, src[i].x2); - dst->y1 = min_t(int, dst->y1, src[i].y1); - dst->y2 = max_t(int, dst->y2, src[i].y2); - } - - if (dst->x2 > max_width || dst->y2 > max_height || - dst->x1 >= dst->x2 || dst->y1 >= dst->y2) { - DRM_DEBUG_KMS("Illegal clip: x1=%u, x2=%u, y1=%u, y2=%u\n", - dst->x1, dst->x2, dst->y1, dst->y2); - dst->x1 = 0; - dst->y1 = 0; - dst->x2 = max_width; - dst->y2 = max_height; - } - - return (dst->x2 - dst->x1) == max_width && - (dst->y2 - dst->y1) == max_height; -} -EXPORT_SYMBOL(tinydrm_merge_clips); - -int tinydrm_fb_dirty(struct drm_framebuffer *fb, - struct drm_file *file_priv, - unsigned int flags, unsigned int color, - struct drm_clip_rect *clips, - unsigned int num_clips) -{ - struct tinydrm_device *tdev = fb->dev->dev_private; - struct drm_plane *plane = &tdev->pipe.plane; - int ret = 0; - - drm_modeset_lock(&plane->mutex, NULL); - - /* fbdev can flush even when we're not interested */ - if (plane->state->fb == fb) { - mutex_lock(&tdev->dirty_lock); - ret = tdev->fb_dirty(fb, file_priv, flags, - color, clips, num_clips); - mutex_unlock(&tdev->dirty_lock); - } - - drm_modeset_unlock(&plane->mutex); - - if (ret) - dev_err_once(fb->dev->dev, - "Failed to update display %d\n", ret); - - return ret; -} -EXPORT_SYMBOL(tinydrm_fb_dirty); - /** * tinydrm_memcpy - Copy clip buffer * @dst: Destination buffer diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c index d4576d6e8ce4..323564329535 100644 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c @@ -13,7 +13,6 @@ #include #include #include -#include #include struct tinydrm_connector { @@ -111,36 +110,6 @@ tinydrm_connector_create(struct drm_device *drm, return connector; } -/** - * tinydrm_display_pipe_update - Display pipe update helper - * @pipe: Simple display pipe - * @old_state: Old plane state - * - * This function does a full framebuffer flush if the plane framebuffer - * has changed. It also handles vblank events. Drivers can use this as their - * &drm_simple_display_pipe_funcs->update callback. - */ -void tinydrm_display_pipe_update(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *old_state) -{ - struct tinydrm_device *tdev = pipe_to_tinydrm(pipe); - struct drm_framebuffer *fb = pipe->plane.state->fb; - struct drm_crtc *crtc = &tdev->pipe.crtc; - - if (fb && (fb != old_state->fb)) { - if (tdev->fb_dirty) - tdev->fb_dirty(fb, NULL, 0, 0, NULL, 0); - } - - if (crtc->state->event) { - spin_lock_irq(&crtc->dev->event_lock); - drm_crtc_send_vblank_event(crtc, crtc->state->event); - spin_unlock_irq(&crtc->dev->event_lock); - crtc->state->event = NULL; - } -} -EXPORT_SYMBOL(tinydrm_display_pipe_update); - static int tinydrm_rotate_mode(struct drm_display_mode *mode, unsigned int rotation) { diff --git a/drivers/gpu/drm/tinydrm/hx8357d.c b/drivers/gpu/drm/tinydrm/hx8357d.c index 3ae11aa4b73b..8bbd0beafc6a 100644 --- a/drivers/gpu/drm/tinydrm/hx8357d.c +++ b/drivers/gpu/drm/tinydrm/hx8357d.c @@ -176,7 +176,7 @@ out_enable: static const struct drm_simple_display_pipe_funcs hx8357d_pipe_funcs = { .enable = yx240qv29_enable, .disable = mipi_dbi_pipe_disable, - .update = tinydrm_display_pipe_update, + .update = mipi_dbi_pipe_update, .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, }; diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c index ad644069089f..43a3b68d90a2 100644 --- a/drivers/gpu/drm/tinydrm/ili9225.c +++ b/drivers/gpu/drm/tinydrm/ili9225.c @@ -20,12 +20,14 @@ #include #include