drivers/gpu/drm/tegra/drm.h

   1 /*
   2  * Copyright (C) 2012 Avionic Design GmbH
   3  * Copyright (C) 2012-2013 NVIDIA CORPORATION.  All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #ifndef HOST1X_DRM_H
  11 #define HOST1X_DRM_H 1
  12
  13 #include <uapi/drm/tegra_drm.h>
  14 #include <linux/host1x.h>
  15 #include <linux/of_gpio.h>
  16
  17 #include <drm/drmP.h>
  18 #include <drm/drm_crtc_helper.h>
  19 #include <drm/drm_edid.h>
  20 #include <drm/drm_fb_helper.h>
  21 #include <drm/drm_fixed.h>
  22
  23 #include "gem.h"
  24
  25 struct reset_control;
  26
  27 struct tegra_fb {
  28         struct drm_framebuffer base;
  29         struct tegra_bo **planes;
  30         unsigned int num_planes;
  31 };
  32
  33 #ifdef CONFIG_DRM_TEGRA_FBDEV
  34 struct tegra_fbdev {
  35         struct drm_fb_helper base;
  36         struct tegra_fb *fb;
  37 };
  38 #endif
  39
  40 struct tegra_drm {
  41         struct drm_device *drm;
  42
  43         struct iommu_domain *domain;
  44         struct drm_mm mm;
  45
  46         struct mutex clients_lock;
  47         struct list_head clients;
  48
  49 #ifdef CONFIG_DRM_TEGRA_FBDEV
  50         struct tegra_fbdev *fbdev;
  51 #endif
  52
  53         unsigned int pitch_align;
  54
  55         struct {
  56                 struct drm_atomic_state *state;
  57                 struct work_struct work;
  58                 struct mutex lock;
  59         } commit;
  60 };
  61
  62 struct tegra_drm_client;
  63
  64 struct tegra_drm_context {
  65         struct tegra_drm_client *client;
  66         struct host1x_channel *channel;
  67         struct list_head list;
  68 };
  69
  70 struct tegra_drm_client_ops {
  71         int (*open_channel)(struct tegra_drm_client *client,
  72                             struct tegra_drm_context *context);
  73         void (*close_channel)(struct tegra_drm_context *context);
  74         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  75         int (*submit)(struct tegra_drm_context *context,
  76                       struct drm_tegra_submit *args, struct drm_device *drm,
  77                       struct drm_file *file);
  78 };
  79
  80 int tegra_drm_submit(struct tegra_drm_context *context,
  81                      struct drm_tegra_submit *args, struct drm_device *drm,
  82                      struct drm_file *file);
  83
  84 struct tegra_drm_client {
  85         struct host1x_client base;
  86         struct list_head list;
  87
  88         const struct tegra_drm_client_ops *ops;
  89 };
  90
  91 static inline struct tegra_drm_client *
  92 host1x_to_drm_client(struct host1x_client *client)
  93 {
  94         return container_of(client, struct tegra_drm_client, base);
  95 }
  96
  97 int tegra_drm_register_client(struct tegra_drm *tegra,
  98                               struct tegra_drm_client *client);
  99 int tegra_drm_unregister_client(struct tegra_drm *tegra,
 100                                 struct tegra_drm_client *client);
 101
 102 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 103 int tegra_drm_exit(struct tegra_drm *tegra);
 104
 105 struct tegra_dc_soc_info;
 106 struct tegra_output;
 107
 108 struct tegra_dc_stats {
 109         unsigned long frames;
 110         unsigned long vblank;
 111         unsigned long underflow;
 112         unsigned long overflow;
 113 };
 114
 115 struct tegra_dc {
 116         struct host1x_client client;
 117         struct host1x_syncpt *syncpt;
 118         struct device *dev;
 119         spinlock_t lock;
 120
 121         struct drm_crtc base;
 122         int powergate;
 123         int pipe;
 124
 125         struct clk *clk;
 126         struct reset_control *rst;
 127         void __iomem *regs;
 128         int irq;
 129
 130         struct tegra_output *rgb;
 131
 132         struct tegra_dc_stats stats;
 133         struct list_head list;
 134
 135         struct drm_info_list *debugfs_files;
 136         struct drm_minor *minor;
 137         struct dentry *debugfs;
 138
 139         /* page-flip handling */
 140         struct drm_pending_vblank_event *event;
 141
 142         const struct tegra_dc_soc_info *soc;
 143
 144         struct iommu_domain *domain;
 145 };
 146
 147 static inline struct tegra_dc *
 148 host1x_client_to_dc(struct host1x_client *client)
 149 {
 150         return container_of(client, struct tegra_dc, client);
 151 }
 152
 153 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 154 {
 155         return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
 156 }
 157
 158 static inline void tegra_dc_writel(struct tegra_dc *dc, u32 value,
 159                                    unsigned long offset)
 160 {
 161         writel(value, dc->regs + (offset << 2));
 162 }
 163
 164 static inline u32 tegra_dc_readl(struct tegra_dc *dc, unsigned long offset)
 165 {
 166         return readl(dc->regs + (offset << 2));
 167 }
 168
 169 struct tegra_dc_window {
 170         struct {
 171                 unsigned int x;
 172                 unsigned int y;
 173                 unsigned int w;
 174                 unsigned int h;
 175         } src;
 176         struct {
 177                 unsigned int x;
 178                 unsigned int y;
 179                 unsigned int w;
 180                 unsigned int h;
 181         } dst;
 182         unsigned int bits_per_pixel;
 183         unsigned int stride[2];
 184         unsigned long base[3];
 185         bool bottom_up;
 186
 187         struct tegra_bo_tiling tiling;
 188         u32 format;
 189         u32 swap;
 190 };
 191
 192 /* from dc.c */
 193 u32 tegra_dc_get_vblank_counter(struct tegra_dc *dc);
 194 void tegra_dc_enable_vblank(struct tegra_dc *dc);
 195 void tegra_dc_disable_vblank(struct tegra_dc *dc);
 196 void tegra_dc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
 197 void tegra_dc_commit(struct tegra_dc *dc);
 198 int tegra_dc_state_setup_clock(struct tegra_dc *dc,
 199                                struct drm_crtc_state *crtc_state,
 200                                struct clk *clk, unsigned long pclk,
 201                                unsigned int div);
 202
 203 struct tegra_output {
 204         struct device_node *of_node;
 205         struct device *dev;
 206
 207         struct drm_panel *panel;
 208         struct i2c_adapter *ddc;
 209         const struct edid *edid;
 210         unsigned int hpd_irq;
 211         int hpd_gpio;
 212         enum of_gpio_flags hpd_gpio_flags;
 213
 214         struct drm_encoder encoder;
 215         struct drm_connector connector;
 216 };
 217
 218 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 219 {
 220         return container_of(e, struct tegra_output, encoder);
 221 }
 222
 223 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 224 {
 225         return container_of(c, struct tegra_output, connector);
 226 }
 227
 228 /* from rgb.c */
 229 int tegra_dc_rgb_probe(struct tegra_dc *dc);
 230 int tegra_dc_rgb_remove(struct tegra_dc *dc);
 231 int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 232 int tegra_dc_rgb_exit(struct tegra_dc *dc);
 233
 234 /* from output.c */
 235 int tegra_output_probe(struct tegra_output *output);
 236 void tegra_output_remove(struct tegra_output *output);
 237 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 238 void tegra_output_exit(struct tegra_output *output);
 239
 240 int tegra_output_connector_get_modes(struct drm_connector *connector);
 241 struct drm_encoder *
 242 tegra_output_connector_best_encoder(struct drm_connector *connector);
 243 enum drm_connector_status
 244 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 245 void tegra_output_connector_destroy(struct drm_connector *connector);
 246
 247 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 248
 249 /* from dpaux.c */
 250 struct tegra_dpaux;
 251 struct drm_dp_link;
 252
 253 struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
 254 enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
 255 int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
 256 int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
 257 int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
 258 int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
 259 int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
 260 int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
 261                       u8 pattern);
 262
 263 /* from fb.c */
 264 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 265                                     unsigned int index);
 266 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 267 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 268                         struct tegra_bo_tiling *tiling);
 269 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 270                                         struct drm_file *file,
 271                                         struct drm_mode_fb_cmd2 *cmd);
 272 int tegra_drm_fb_prepare(struct drm_device *drm);
 273 void tegra_drm_fb_free(struct drm_device *drm);
 274 int tegra_drm_fb_init(struct drm_device *drm);
 275 void tegra_drm_fb_exit(struct drm_device *drm);
 276 #ifdef CONFIG_DRM_TEGRA_FBDEV
 277 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 278 void tegra_fb_output_poll_changed(struct drm_device *drm);
 279 #endif
 280
 281 extern struct platform_driver tegra_dc_driver;
 282 extern struct platform_driver tegra_dsi_driver;
 283 extern struct platform_driver tegra_sor_driver;
 284 extern struct platform_driver tegra_hdmi_driver;
 285 extern struct platform_driver tegra_dpaux_driver;
 286 extern struct platform_driver tegra_gr2d_driver;
 287 extern struct platform_driver tegra_gr3d_driver;
 288
 289 #endif /* HOST1X_DRM_H */