kernel/drivers/gpu/drm/vc4/vc4_drv.h

   1 /*
   2  * Copyright (C) 2015 Broadcom
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #include "drmP.h"
  10 #include "drm_gem_cma_helper.h"
  11
  12 struct vc4_dev {
  13         struct drm_device *dev;
  14
  15         struct vc4_hdmi *hdmi;
  16         struct vc4_hvs *hvs;
  17         struct vc4_crtc *crtc[3];
  18
  19         struct drm_fbdev_cma *fbdev;
  20 };
  21
  22 static inline struct vc4_dev *
  23 to_vc4_dev(struct drm_device *dev)
  24 {
  25         return (struct vc4_dev *)dev->dev_private;
  26 }
  27
  28 struct vc4_bo {
  29         struct drm_gem_cma_object base;
  30 };
  31
  32 static inline struct vc4_bo *
  33 to_vc4_bo(struct drm_gem_object *bo)
  34 {
  35         return (struct vc4_bo *)bo;
  36 }
  37
  38 struct vc4_hvs {
  39         struct platform_device *pdev;
  40         void __iomem *regs;
  41         void __iomem *dlist;
  42 };
  43
  44 struct vc4_plane {
  45         struct drm_plane base;
  46 };
  47
  48 static inline struct vc4_plane *
  49 to_vc4_plane(struct drm_plane *plane)
  50 {
  51         return (struct vc4_plane *)plane;
  52 }
  53
  54 enum vc4_encoder_type {
  55         VC4_ENCODER_TYPE_HDMI,
  56         VC4_ENCODER_TYPE_VEC,
  57         VC4_ENCODER_TYPE_DSI0,
  58         VC4_ENCODER_TYPE_DSI1,
  59         VC4_ENCODER_TYPE_SMI,
  60         VC4_ENCODER_TYPE_DPI,
  61 };
  62
  63 struct vc4_encoder {
  64         struct drm_encoder base;
  65         enum vc4_encoder_type type;
  66         u32 clock_select;
  67 };
  68
  69 static inline struct vc4_encoder *
  70 to_vc4_encoder(struct drm_encoder *encoder)
  71 {
  72         return container_of(encoder, struct vc4_encoder, base);
  73 }
  74
  75 #define HVS_READ(offset) readl(vc4->hvs->regs + offset)
  76 #define HVS_WRITE(offset, val) writel(val, vc4->hvs->regs + offset)
  77
  78 /**
  79  * _wait_for - magic (register) wait macro
  80  *
  81  * Does the right thing for modeset paths when run under kdgb or similar atomic
  82  * contexts. Note that it's important that we check the condition again after
  83  * having timed out, since the timeout could be due to preemption or similar and
  84  * we've never had a chance to check the condition before the timeout.
  85  */
  86 #define _wait_for(COND, MS, W) ({ \
  87         unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1;   \
  88         int ret__ = 0;                                                  \
  89         while (!(COND)) {                                               \
  90                 if (time_after(jiffies, timeout__)) {                   \
  91                         if (!(COND))                                    \
  92                                 ret__ = -ETIMEDOUT;                     \
  93                         break;                                          \
  94                 }                                                       \
  95                 if (W && drm_can_sleep())  {                            \
  96                         msleep(W);                                      \
  97                 } else {                                                \
  98                         cpu_relax();                                    \
  99                 }                                                       \
 100         }                                                               \
 101         ret__;                                                          \
 102 })
 103
 104 #define wait_for(COND, MS) _wait_for(COND, MS, 1)
 105
 106 /* vc4_bo.c */
 107 void vc4_free_object(struct drm_gem_object *gem_obj);
 108 struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t size);
 109 int vc4_dumb_create(struct drm_file *file_priv,
 110                     struct drm_device *dev,
 111                     struct drm_mode_create_dumb *args);
 112 struct dma_buf *vc4_prime_export(struct drm_device *dev,
 113                                  struct drm_gem_object *obj, int flags);
 114
 115 /* vc4_crtc.c */
 116 extern struct platform_driver vc4_crtc_driver;
 117 int vc4_enable_vblank(struct drm_device *dev, unsigned int crtc_id);
 118 void vc4_disable_vblank(struct drm_device *dev, unsigned int crtc_id);
 119 void vc4_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
 120 int vc4_crtc_debugfs_regs(struct seq_file *m, void *arg);
 121
 122 /* vc4_debugfs.c */
 123 int vc4_debugfs_init(struct drm_minor *minor);
 124 void vc4_debugfs_cleanup(struct drm_minor *minor);
 125
 126 /* vc4_drv.c */
 127 void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index);
 128
 129 /* vc4_hdmi.c */
 130 extern struct platform_driver vc4_hdmi_driver;
 131 int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused);
 132
 133 /* vc4_hvs.c */
 134 extern struct platform_driver vc4_hvs_driver;
 135 void vc4_hvs_dump_state(struct drm_device *dev);
 136 int vc4_hvs_debugfs_regs(struct seq_file *m, void *unused);
 137
 138 /* vc4_kms.c */
 139 int vc4_kms_load(struct drm_device *dev);
 140
 141 /* vc4_plane.c */
 142 struct drm_plane *vc4_plane_init(struct drm_device *dev,
 143                                  enum drm_plane_type type);
 144 u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist);
 145 u32 vc4_plane_dlist_size(struct drm_plane_state *state);