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* Merge branch 'i2c/for-mergewindow' of ↵Linus Torvalds2022-03-2629-322/+1285
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - tracepoints when Linux acts as an I2C client - added support for AMD PSP - whole subsystem now uses generic_handle_irq_safe() - piix4 driver gained MMIO access enabling so far missed controllers with AMD chipsets - a bulk of device driver updates, refactorization, and fixes. * 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (61 commits) i2c: mux: demux-pinctrl: do not deactivate a master that is not active i2c: meson: Fix wrong speed use from probe i2c: add tracepoints for I2C slave events i2c: designware: Remove code duplication i2c: cros-ec-tunnel: Fix syntax errors in comments MAINTAINERS: adjust XLP9XX I2C DRIVER after removing the devicetree binding i2c: designware: Mark dw_i2c_plat_{suspend,resume}() as __maybe_unused i2c: mediatek: Add i2c compatible for Mediatek MT8168 dt-bindings: i2c: update bindings for MT8168 SoC i2c: mt65xx: Simplify with clk-bulk i2c: i801: Drop two outdated comments i2c: xiic: Make bus names unique i2c: i801: Add support for the Process Call command i2c: i801: Drop useless masking in i801_access i2c: tegra: Add SMBus block read function i2c: designware: Use the i2c_mark_adapter_suspended/resumed() helpers i2c: designware: Lock the adapter while setting the suspended flag i2c: mediatek: remove redundant null check i2c: mediatek: modify bus speed calculation formula i2c: designware: Fix improper usage of readl ...
| * i2c: meson: Fix wrong speed use from probeLucas Tanure2022-03-201-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Having meson_i2c_set_clk_div after i2c_add_adapter causes issues for client drivers that try to use the bus before the requested speed is applied. The bus can be used just after i2c_add_adapter, so move i2c_add_adapter to the final step as meson_i2c_set_clk_div needs to be called before the bus is used. Fixes: 09af1c2fa490 ("i2c: meson: set clock divider in probe instead of setting it for each transfer") Signed-off-by: Lucas Tanure <tanure@linux.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: designware: Remove code duplicationJan Dabros2022-03-181-20/+15
| | | | | | | | | | | | | | | | | | | | Simplify code by moving common part to one function. Signed-off-by: Jan Dabros <jsd@semihalf.com> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: cros-ec-tunnel: Fix syntax errors in commentsXiang wangx2022-03-111-2/+2
| | | | | | | | | | | | | | | | Delete the redundant word 'to' Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com> [wsa: fixed prefix in subject] Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: designware: Mark dw_i2c_plat_{suspend,resume}() as __maybe_unusedNathan Chancellor2022-03-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_PM is set but CONFIG_PM_SLEEP is not, two compiler warnings appear: drivers/i2c/busses/i2c-designware-platdrv.c:444:12: error: unused function 'dw_i2c_plat_suspend' [-Werror,-Wunused-function] static int dw_i2c_plat_suspend(struct device *dev) ^ drivers/i2c/busses/i2c-designware-platdrv.c:465:12: error: unused function 'dw_i2c_plat_resume' [-Werror,-Wunused-function] static int dw_i2c_plat_resume(struct device *dev) ^ 2 errors generated. These functions are only used in SET_LATE_SYSTEM_SLEEP_PM_OPS(), which is defined as empty when CONFIG_PM_SLEEP is not defined. Mark the functions as __maybe_unused to make it clear that these functions might be unused in this configuration. Fixes: c57813b8b288 ("i2c: designware: Lock the adapter while setting the suspended flag") Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mediatek: Add i2c compatible for Mediatek MT8168Kewei Xu2022-03-111-0/+14
| | | | | | | | | | | | | | | | | | | | Add i2c compatible for MT8168. Compare to MT2712 i2c controller, MT8168 need to synchronize signal with dma. Signed-off-by: Kewei Xu <kewei.xu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mt65xx: Simplify with clk-bulkAngeloGioacchino Del Regno2022-03-111-73/+51
| | | | | | | | | | | | | | | | | | | | | | | | Since depending on the SoC or specific bus functionality some clocks may be optional, we cannot get the benefit of using devm_clk_bulk_get() but, by migrating to clk-bulk, we are able to remove the custom functions mtk_i2c_clock_enable() and mtk_i2c_clock_disable(), increasing common APIs usage, hence (lightly) decreasing kernel footprint. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: i801: Drop two outdated commentsJean Delvare2022-03-111-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | * Timeouts are reported even in interrupt mode since commit b3b8df97723d ("i2c: i801: Use wait_event_timeout to wait for interrupts") so drop the comment which claims this only happens in polled mode. * xact does not include the PEC bit, as the driver does not support software PEC. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: xiic: Make bus names uniqueRobert Hancock2022-03-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver is for an FPGA logic core, so there can be arbitrarily many instances of the bus on a given system. Previously all of the I2C bus names were "xiic-i2c" which caused issues with lm_sensors when trying to map human-readable names to sensor inputs because it could not properly distinguish the busses, for example. Append the platform device name to the I2C bus name so it is unique between different instances. Fixes: e1d5b6598cdc ("i2c: Add support for Xilinx XPS IIC Bus Interface") Signed-off-by: Robert Hancock <robert.hancock@calian.com> Tested-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: i801: Add support for the Process Call commandJean Delvare2022-03-021-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | The Process Call command is implemented by the hardware since the very first Intel 82801 chipset, and trivial to support. Oscar Romero Matamala from the Georgia Institute of Technology told me it is needed for an experiment his team is working on at the moment, so let's just add support for it. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: i801: Drop useless masking in i801_accessJean Delvare2022-03-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I went all the way back to kernel 2.6.12 and that masking was never needed. I suppose it was there in anticipation of software PEC support, but that was never added to the driver (and never will be, as this is made obsolete by hardware PEC). I'm also removing initialization to 0, which is not needed either, and would prevent the compiler from reporting an actual usage of uninitialized variables. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: tegra: Add SMBus block read functionAkhil R2022-03-011-2/+16
| | | | | | | | | | | | | | | | | | Emulate SMBus block read using ContinueXfer to read the length byte Signed-off-by: Akhil R <akhilrajeev@nvidia.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: designware: Use the i2c_mark_adapter_suspended/resumed() helpersHans de Goede2022-03-014-20/+4
| | | | | | | | | | | | | | | | | | | | Use the i2c_mark_adapter_suspended/resumed() i2c-core helpers and rely on the i2c-core's suspended checking instead of using DIY code. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: designware: Lock the adapter while setting the suspended flagHans de Goede2022-03-012-10/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lock the adapter while setting the suspended flag, to ensure that other locked code always sees the change immediately, rather then possibly using a stale value. This involves splitting the suspend/resume callbacks into separate runtime and normal suspend/resume calls. This is necessary because i2c_dw_xfer() will get called by the i2c-core with the adapter locked and it in turn calls the runtime-resume callback through pm_runtime_get_sync(). So the runtime versions of the suspend/resume callbacks cannot take the adapter-lock. Note this patch simply makes the runtime suspend/resume callbacks not deal with the suspended flag at all. During runtime the pm_runtime_get_sync() from i2c_dw_xfer() will always ensure that the adapter is resumed when necessary. The suspended flag check is only necessary to check proper suspend/resume ordering during normal suspend/resume which makes the pm_runtime_get_sync() call a no-op. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mediatek: remove redundant null checkXu Wang2022-03-011-6/+3
| | | | | | | | | | | | | | | | | | Because clk_disable_unprepare already checked NULL clock parameter, so the additional checks are unnecessary, just remove it Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Reviewed-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mediatek: modify bus speed calculation formulaKewei Xu2022-03-011-10/+41
| | | | | | | | | | | | | | | | | | | | | | When clock-div is 0 or greater than 1, the bus speed calculated by the old speed calculation formula will be larger than the target speed. So we update the formula. Signed-off-by: Kewei Xu <kewei.xu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: designware: Fix improper usage of readlJan Dabros2022-03-011-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel test robot reported incorrect type in argument 1 of readl(), but more importantly it brought attention that MMIO accessor shouldn't be used in this case, since req->hdr.status is part of a command-response buffer in system memory. Since its value may be altered by PSP outside of the scope of current thread (somehow similar to IRQ handler case), we need to use READ_ONCE() to ensure compiler won't optimize this call. Fix also 'status' variable type to reflect that corresponding field in command-response buffer is platform-independent u32. Fixes: 78d5e9e299e3 ("i2c: designware: Add AMD PSP I2C bus support") Signed-off-by: Jan Dabros <jsd@semihalf.com> Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: qcom-geni: Add support for GPI DMAVinod Koul2022-03-011-28/+280
| | | | | | | | | | | | | | | | | | | | | | | | | | QUP Serial engines supports data transfers thru FIFO mode, SE DMA mode and lastly GPI DMA mode. Former two are already supported and this adds supports for the last mode. In GPI DMA mode, the firmware is issued commands by driver to perform DMA and setup the serial port. Signed-off-by: Vinod Koul <vkoul@kernel.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: riic: Simplify reset handlingLad Prabhakar2022-03-011-17/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Read reset phandle as optional instead of exclusive so that all the DT's passing the reset phandle can be used to assert/deassert the reset line. With this change we don't have to differentiate the RZ/G2L SoC. With the above changes we no longer need the "renesas,riic-r9a07g044" compatible string, so drop it from riic_i2c_dt_ids[]. No changes are required to the r9a07g044.dtsi as we already have "renesas,riic-rz" as a fallback compatible string. While at it, check the return code of reset_control_deassert() as it might fail and also add a devres action to assert the reset line. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: cht-wc: Use generic_handle_irq_safe().Sebastian Andrzej Siewior2022-03-011-9/+2
| | | | | | | | | | | | | | | | | | | | | | Instead of manually disabling interrupts before invoking use generic_handle_irq_safe() which can be invoked with enabled and disabled interrupts. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * Merge tag 'irq-api-2022-02-21' of ↵Wolfram Sang2022-02-234-9/+26
| |\ | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into i2c/for-mergewindow Provide a tag for maintainers to pull the generic_handle_irq_safe() API.
| * | i2c: qcom-cci: add sm8450 compatibleVladimir Zapolskiy2022-02-181-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add QCOM SM8450 specific compatible for CCI controller, which is equal to CCI controllers found on QCOM SDM845 and QCOM SM8250 SoCs. Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Reviewed-by: Robert Foss <robert.foss@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: pasemi: Drop I2C classes from platform driver variantMartin Povišer2022-02-152-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop I2C device-probing classes from platform variant of the PASemi controller as it is only used on platforms where I2C devices should be instantiated in devicetree. (The I2C_CLASS_DEPRECATED flag is not raised as up to this point no devices relied on the old behavior.) Fixes: d88ae2932df0 ("i2c: pasemi: Add Apple platform driver") Signed-off-by: Martin Povišer <povik+lin@cutebit.org> Reviewed-by: Sven Peter <sven@svenpeter.dev> Acked-by: Hector Martin <marcan@marcan.st> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: designware: remove unneeded semicolonYang Li2022-02-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Eliminate the following coccicheck warnings: ./drivers/i2c/busses/i2c-designware-amdpsp.c:172:2-3: Unneeded semicolon ./drivers/i2c/busses/i2c-designware-amdpsp.c:245:2-3: Unneeded semicolon Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jan Dabros <jsd@semihalf.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: designware-pci: Switch to use i2c_new_ccgx_ucsi()Andy Shevchenko2022-02-152-25/+6
| | | | | | | | | | | | | | | | | | | | | | | | Instead of open coded variant switch to use i2c_new_ccgx_ucsi(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: nvidia-gpu: Convert to use dev_err_probe()Andy Shevchenko2022-02-151-12/+6
| | | | | | | | | | | | | | | | | | | | | | | | It's fine to call dev_err_probe() in ->probe() when error code is known. Convert the driver to use dev_err_probe(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: nvidia-gpu: Use temporary variable for struct deviceAndy Shevchenko2022-02-151-14/+14
| | | | | | | | | | | | | | | | | | | | | Use temporary variable for struct device to make code neater. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: nvidia-gpu: Switch to use i2c_new_ccgx_ucsi()Andy Shevchenko2022-02-152-20/+7
| | | | | | | | | | | | | | | | | | | | | Instead of open coded variant switch to use i2c_new_ccgx_ucsi(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: Introduce common module to instantiate CCGx UCSIAndy Shevchenko2022-02-154-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a common module to provide an API to instantiate UCSI device for Cypress CCGx Type-C controller. Individual bus drivers need to select this one on demand. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: i801: Add support for Intel Raptor Lake PCH-SJarkko Nikula2022-02-152-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | Add SMBus PCI ID on Intel Raptor Lake PCH-S. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: brcmstb: allow compiling on BCM4908Rafał Miłecki2022-02-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | BCM4908 SoCs use the same I2C hardware block as STB and BCM63xx devices. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: rcar: Add R-Car Gen4 supportGeert Uytterhoeven2022-02-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the I2C Bus Interface on R-Car Gen4 SoCs (e.g. R-Car S4-8) by matching on a family-specific compatible value. While I2C on R-Car Gen4 does support some extra features (Slave Clock Stretch Select), for now it is treated the same as I2C on R-Car Gen3. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> [wsa: removed incorrect "FM+" from commit message] Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: designware: Add AMD PSP I2C bus supportJan Dabros2022-02-116-9/+485
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement an I2C controller sharing mechanism between the host (kernel) and PSP co-processor on some platforms equipped with AMD Cezanne SoC. On these platforms we need to implement "software" i2c arbitration. Default arbitration owner is PSP and kernel asks for acquire as well as inform about release of the i2c bus via mailbox mechanism. +---------+ <- ACQUIRE | | +---------| CPU |\ | | | \ +----------+ SDA | +---------+ \ | |------- MAILBOX +--> | I2C-DW | SCL | +---------+ | |------- | | | +----------+ +---------| PSP | <- ACK | | +---------+ +---------+ <- RELEASE | | +---------| CPU | | | | +----------+ SDA | +---------+ | |------- MAILBOX +--> | I2C-DW | SCL | +---------+ / | |------- | | | / +----------+ +---------| PSP |/ <- ACK | | +---------+ The solution is similar to i2c-designware-baytrail.c implementation, where we are using a generic i2c-designware-* driver with a small "wrapper". In contrary to baytrail semaphore implementation, beside internal acquire_lock() and release_lock() methods we are also applying quirks to lock_bus() and unlock_bus() global adapter methods. With this in place all i2c clients drivers may lock i2c bus for a desired number of i2c transactions (e.g. write-wait-read) without being aware of that such bus is shared with another entity. Modify i2c_dw_probe_lock_support() to select correct semaphore implementation at runtime, since now we have more than one available. Configure new matching ACPI ID "AMDI0019" and register ARBITRATION_SEMAPHORE flag in order to distinguish setup with PSP arbitration. Add myself as a reviewer for I2C DesignWare in order to help with reviewing and testing possible changes touching new i2c-designware-amdpsp.c module. Signed-off-by: Jan Dabros <jsd@semihalf.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> [wsa: removed unneeded blank line and curly braces] Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: designware: Add missing locksJan Dabros2022-02-112-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All accesses to controller's registers should be protected on probe, disable and xfer paths. This is needed for i2c bus controllers that are shared with but not controller by kernel. Signed-off-by: Jan Dabros <jsd@semihalf.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Enable EFCH MMIO for Family 17h+Terry Bowman2022-02-111-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable EFCH MMIO using check for SMBus PCI revision ID value 0x51 or greater. This PCI revision ID check will enable family 17h and future AMD processors with the same EFCH SMBus controller HW. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Add EFCH MMIO support for SMBus port selectTerry Bowman2022-02-111-3/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AMD processors include registers capable of selecting between 2 SMBus ports. Port selection is made during each user access by writing to FCH::PM::DECODEEN[smbus0sel]. Change the driver to use MMIO during SMBus port selection because cd6h/cd7h port I/O is not available on later AMD processors. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Add EFCH MMIO support to SMBus base address detectTerry Bowman2022-02-111-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EFCH SMBus controller's base address is determined using details in FCH::PM::DECODEEN[smbusasfiobase] and FCH::PM::DECODEEN[smbusasfioen].These register fields were accessed using cd6h/cd7h port I/O. cd6h/cd7h port I/O is no longer available in later AMD processors. Change base address detection to use MMIO instead of port I/O cd6h/cd7h. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Add EFCH MMIO support to region request and releaseTerry Bowman2022-02-111-8/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | EFCH cd6h/cd7h port I/O may no longer be available on later AMD processors and it is recommended to use MMIO instead. Update the request and release functions to support MMIO. MMIO request/release and mmapping require details during cleanup. Add a MMIO configuration structure containing resource and vaddress details for mapping the region, accessing the region, and releasing the region. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> [wsa: rebased after fixup in previous patch] Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Move SMBus port selection into functionTerry Bowman2022-02-111-10/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move port selection code into a separate function. Refactor is in preparation for following MMIO changes. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Move SMBus controller base address detect into functionTerry Bowman2022-02-111-25/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move SMBus controller base address detection into function. Refactor is in preparation for following MMIO changes. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Move port I/O region request/release code into functionsTerry Bowman2022-02-111-17/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move duplicated region request and release code into a function. Move is in preparation for following MMIO changes. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> [wsa: added missing curly brace] Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: piix4: Replace hardcoded memory map size with a #defineTerry Bowman2022-02-101-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace number constant with #define to improve readability and maintainability. Signed-off-by: Terry Bowman <terry.bowman@amd.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: npcm7xx: Fix typosJonathan Neuschäfer2022-02-071-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | The comments in this driver have a few typos. Let's fix them. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: tali.perry@nuvoton.com Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: bcm2835: Fix the error handling in 'bcm2835_i2c_probe()'Christophe JAILLET2022-02-071-5/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some resource should be released if an error occurs in 'bcm2835_i2c_probe()'. Add an error handling path and the needed 'clk_disable_unprepare()' and 'clk_rate_exclusive_put()' calls. While at it, rework the bottom of the function to use this newly added error handling path and have an explicit and more standard "return 0;" at the end of the normal path. Fixes: bebff81fb8b9 ("i2c: bcm2835: Model Divider in CCF") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> [wsa: rebased] Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: amd-mp2: Remove useless DMA-32 fallback configurationChristophe JAILLET2022-02-071-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As stated in [1], dma_set_mask() with a 64-bit mask never fails if dev->dma_mask is non-NULL. So, if it fails, the 32 bits case will also fail for the same reason. Simplify code and remove some dead code accordingly. [1]: https://lkml.org/lkml/2021/6/7/398 Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Nehal Bakulchandra Shah <Nehal-bakulchandra.Shah@amd.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: mediatek: Add i2c compatible for Mediatek MT8186Kewei Xu2022-01-281-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add i2c compatible for MT8186. Compare to MT8192 i2c controller, MT8186 doesn't need handshake signal witch apdma. Signed-off-by: Kewei Xu <kewei.xu@mediatek.com> Reviewed-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* | | Merge tag 'for-v5.18' of ↵Linus Torvalds2022-03-251-18/+102
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply and reset updates from Sebastian Reichel: "Power-supply core: - Introduce "Bypass" charging type used by USB PPS standard - Refactor power_supply_set_input_current_limit_from_supplier() - Add fwnode support to power_supply_get_battery_info() Drivers: - ab8500: continue migrating towards using standard core APIs - axp288 fuel-gauge: refactor driver to be fully resource managed - battery-samsung-sdi: new in-kernel provider for (constant) Samsung battery info - bq24190: disable boost regulator on shutdown - bq24190: add support for battery-info on ACPI based systems - bq25890: prepare driver for usage on ACPI based systems - bq25890: add boost regulator support - cpcap-battery: add NVMEM based battery detection support - injoinic ip5xxx: new driver for power bank IC - upi ug3105: new battery driver - misc small improvements and fixes" * tag 'for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (94 commits) power: ab8500_chargalg: Use CLOCK_MONOTONIC power: supply: Add a driver for Injoinic power bank ICs dt-bindings: trivial-devices: Add Injoinic power bank ICs dt-bindings: vendor-prefixes: Add Injoinic power: supply: ab8500: Remove unused variable power: supply: da9150-fg: Remove unnecessary print function dev_err() power: supply: ab8500: fix a handful of spelling mistakes power: supply: ab8500_fg: Account for line impedance dt-bindings: power: supply: ab8500_fg: Add line impedance power: supply: axp20x_usb_power: fix platform_get_irq.cocci warnings power: supply: axp20x_ac_power: fix platform_get_irq.cocci warning power: supply: wm8350-power: Add missing free in free_charger_irq power: supply: wm8350-power: Handle error for wm8350_register_irq power: supply: Static data for Samsung batteries power: supply: ab8500_fg: Use VBAT-to-Ri if possible power: supply: Support VBAT-to-Ri lookup tables power: supply: ab8500: Standardize BTI resistance power: supply: ab8500: Standardize alert mode charging power: supply: ab8500: Standardize maintenance charging power: supply: bq24190_charger: Delay applying charge_type changes when OTG 5V Vbus boost is on ...
| * | i2c: cht-wc: Make charger i2c-client instantiation board/device-model specificHans de Goede2022-02-011-18/+102
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The i2c-controller on the Cherry Trail - Whiskey Cove PMIC is special in that it is always connected to the I2C charger IC of the board on which the PMIC is used; and the charger IC is not described in ACPI, so the i2c-cht-wc code needs to instantiate an i2c-client for it itself. So far this was hardcoded to instantiate an i2c-client for the bq24292i, with all properties, etc. set to match how this charger is used on the GPD win and GPD pocket devices. There is a rudimentary check to make sure the ACPI tables are at least somewhat as expected, but this is far from accurate, leading to a wrong i2c-client being instantiated for the charger on some boards. Switch to the new DMI based intel_cht_wc_get_model() helper which is exported by the MFD driver for the CHT Whiskey Cove PMIC to help PMIC cell drivers like the i2c-cht-wc code reliably detect which board they are running on. And add board_info for the charger ICs as found on the other 2 known boards with a Whisky Cove PMIC. This has been tested on all 3 known boards. Acked-by: Wolfram Sang <wsa@kernel.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
* | i2c: brcmstb: fix support for DSL and CM variantsRafał Miłecki2022-02-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | DSL and CM (Cable Modem) support 8 B max transfer size and have a custom DT binding for that reason. This driver was checking for a wrong "compatible" however which resulted in an incorrect setup. Fixes: e2e5a2c61837 ("i2c: brcmstb: Adding support for CM and DSL SoCs") Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* | i2c: qup: allow COMPILE_TESTWolfram Sang2022-02-151-1/+1
| | | | | | | | | | | | | | Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang <wsa@kernel.org>
generated by cgit v1.2.3-71-gd317 (git 2.46.0) at 2025-12-18 05:47:25 +0000