drivers/gpu/drm/rcar-du/rcar_du_crtc.h

   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/drmP.h>
  18 #include <drm/drm_crtc.h>
  19
  20 #include <media/vsp1.h>
  21
  22 struct rcar_du_group;
  23 struct rcar_du_vsp;
  24
  25 /**
  26  * struct rcar_du_crtc - the CRTC, representing a DU superposition processor
  27  * @crtc: base DRM CRTC
  28  * @clock: the CRTC functional clock
  29  * @extclock: external pixel dot clock (optional)
  30  * @mmio_offset: offset of the CRTC registers in the DU MMIO block
  31  * @index: CRTC software and hardware index
  32  * @initialized: whether the CRTC has been initialized and clocks enabled
  33  * @dsysr: cached value of the DSYSR register
  34  * @vblank_enable: whether vblank events are enabled on this CRTC
  35  * @event: event to post when the pending page flip completes
  36  * @flip_wait: wait queue used to signal page flip completion
  37  * @vblank_lock: protects vblank_wait and vblank_count
  38  * @vblank_wait: wait queue used to signal vertical blanking
  39  * @vblank_count: number of vertical blanking interrupts to wait for
  40  * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
  41  * @group: CRTC group this CRTC belongs to
  42  * @vsp: VSP feeding video to this CRTC
  43  * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC
  44  */
  45 struct rcar_du_crtc {
  46         struct drm_crtc crtc;
  47
  48         struct clk *clock;
  49         struct clk *extclock;
  50         unsigned int mmio_offset;
  51         unsigned int index;
  52         bool initialized;
  53
  54         u32 dsysr;
  55
  56         bool vblank_enable;
  57         struct drm_pending_vblank_event *event;
  58         wait_queue_head_t flip_wait;
  59
  60         spinlock_t vblank_lock;
  61         wait_queue_head_t vblank_wait;
  62         unsigned int vblank_count;
  63
  64         unsigned int outputs;
  65
  66         struct rcar_du_group *group;
  67         struct rcar_du_vsp *vsp;
  68         unsigned int vsp_pipe;
  69
  70         const char *const *sources;
  71         unsigned int sources_count;
  72 };
  73
  74 #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc)
  75
  76 /**
  77  * struct rcar_du_crtc_state - Driver-specific CRTC state
  78  * @state: base DRM CRTC state
  79  * @crc: CRC computation configuration
  80  */
  81 struct rcar_du_crtc_state {
  82         struct drm_crtc_state state;
  83
  84         struct vsp1_du_crc_config crc;
  85 };
  86
  87 #define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state)
  88
  89 enum rcar_du_output {
  90         RCAR_DU_OUTPUT_DPAD0,
  91         RCAR_DU_OUTPUT_DPAD1,
  92         RCAR_DU_OUTPUT_LVDS0,
  93         RCAR_DU_OUTPUT_LVDS1,
  94         RCAR_DU_OUTPUT_HDMI0,
  95         RCAR_DU_OUTPUT_HDMI1,
  96         RCAR_DU_OUTPUT_TCON,
  97         RCAR_DU_OUTPUT_MAX,
  98 };
  99
 100 int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,
 101                         unsigned int hwindex);
 102 void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
 103 void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
 104
 105 void rcar_du_crtc_route_output(struct drm_crtc *crtc,
 106                                enum rcar_du_output output);
 107 void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc);
 108
 109 void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set);
 110
 111 #endif /* __RCAR_DU_CRTC_H__ */