cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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rcar_du_crtc.h (2955B)

      1/* SPDX-License-Identifier: GPL-2.0+ */
      2/*
      3 * rcar_du_crtc.h  --  R-Car Display Unit CRTCs
      4 *
      5 * Copyright (C) 2013-2015 Renesas Electronics Corporation
      6 *
      7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
      8 */
      9
     10#ifndef __RCAR_DU_CRTC_H__
     11#define __RCAR_DU_CRTC_H__
     12
     13#include <linux/mutex.h>
     14#include <linux/spinlock.h>
     15#include <linux/wait.h>
     16
     17#include <drm/drm_crtc.h>
     18#include <drm/drm_writeback.h>
     19
     20#include <media/vsp1.h>
     21
     22struct rcar_du_group;
     23struct rcar_du_vsp;
     24
     25/**
     26 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor
     27 * @crtc: base DRM CRTC
     28 * @dev: the DU device
     29 * @clock: the CRTC functional clock
     30 * @extclock: external pixel dot clock (optional)
     31 * @mmio_offset: offset of the CRTC registers in the DU MMIO block
     32 * @index: CRTC hardware index
     33 * @initialized: whether the CRTC has been initialized and clocks enabled
     34 * @dsysr: cached value of the DSYSR register
     35 * @vblank_enable: whether vblank events are enabled on this CRTC
     36 * @event: event to post when the pending page flip completes
     37 * @flip_wait: wait queue used to signal page flip completion
     38 * @vblank_lock: protects vblank_wait and vblank_count
     39 * @vblank_wait: wait queue used to signal vertical blanking
     40 * @vblank_count: number of vertical blanking interrupts to wait for
     41 * @group: CRTC group this CRTC belongs to
     42 * @cmm: CMM associated with this CRTC
     43 * @vsp: VSP feeding video to this CRTC
     44 * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC
     45 * @writeback: the writeback connector
     46 */
     47struct rcar_du_crtc {
     48	struct drm_crtc crtc;
     49
     50	struct rcar_du_device *dev;
     51	struct clk *clock;
     52	struct clk *extclock;
     53	unsigned int mmio_offset;
     54	unsigned int index;
     55	bool initialized;
     56
     57	u32 dsysr;
     58
     59	bool vblank_enable;
     60	struct drm_pending_vblank_event *event;
     61	wait_queue_head_t flip_wait;
     62
     63	spinlock_t vblank_lock;
     64	wait_queue_head_t vblank_wait;
     65	unsigned int vblank_count;
     66
     67	struct rcar_du_group *group;
     68	struct platform_device *cmm;
     69	struct rcar_du_vsp *vsp;
     70	unsigned int vsp_pipe;
     71
     72	const char *const *sources;
     73	unsigned int sources_count;
     74
     75	struct drm_writeback_connector writeback;
     76};
     77
     78#define to_rcar_crtc(c)		container_of(c, struct rcar_du_crtc, crtc)
     79#define wb_to_rcar_crtc(c)	container_of(c, struct rcar_du_crtc, writeback)
     80
     81/**
     82 * struct rcar_du_crtc_state - Driver-specific CRTC state
     83 * @state: base DRM CRTC state
     84 * @crc: CRC computation configuration
     85 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
     86 */
     87struct rcar_du_crtc_state {
     88	struct drm_crtc_state state;
     89
     90	struct vsp1_du_crc_config crc;
     91	unsigned int outputs;
     92};
     93
     94#define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state)
     95
     96int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,
     97			unsigned int hwindex);
     98
     99void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc);
    100
    101void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set);
    102
    103#endif /* __RCAR_DU_CRTC_H__ */