LXR linux/drivers/gpu/drm/rcar-du/rcar_du

   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
  96enum rcar_du_output {
  97        RCAR_DU_OUTPUT_DPAD0,
  98        RCAR_DU_OUTPUT_DPAD1,
  99        RCAR_DU_OUTPUT_LVDS0,
 100        RCAR_DU_OUTPUT_LVDS1,
 101        RCAR_DU_OUTPUT_HDMI0,
 102        RCAR_DU_OUTPUT_HDMI1,
 103        RCAR_DU_OUTPUT_TCON,
 104        RCAR_DU_OUTPUT_MAX,
 105};
 106
 107int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,
 108                        unsigned int hwindex);
 109
 110void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc);
 111
 112void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set);
 113
 114#endif /* __RCAR_DU_CRTC_H__ */
 115