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_FBDEV_EMULATION
  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_FBDEV_EMULATION
  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         struct drm_atomic_state *state;
  62 };
  63
  64 struct tegra_drm_client;
  65
  66 struct tegra_drm_context {
  67         struct tegra_drm_client *client;
  68         struct host1x_channel *channel;
  69         struct list_head list;
  70 };
  71
  72 struct tegra_drm_client_ops {
  73         int (*open_channel)(struct tegra_drm_client *client,
  74                             struct tegra_drm_context *context);
  75         void (*close_channel)(struct tegra_drm_context *context);
  76         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  77         int (*submit)(struct tegra_drm_context *context,
  78                       struct drm_tegra_submit *args, struct drm_device *drm,
  79                       struct drm_file *file);
  80 };
  81
  82 int tegra_drm_submit(struct tegra_drm_context *context,
  83                      struct drm_tegra_submit *args, struct drm_device *drm,
  84                      struct drm_file *file);
  85
  86 struct tegra_drm_client {
  87         struct host1x_client base;
  88         struct list_head list;
  89
  90         const struct tegra_drm_client_ops *ops;
  91 };
  92
  93 static inline struct tegra_drm_client *
  94 host1x_to_drm_client(struct host1x_client *client)
  95 {
  96         return container_of(client, struct tegra_drm_client, base);
  97 }
  98
  99 int tegra_drm_register_client(struct tegra_drm *tegra,
 100                               struct tegra_drm_client *client);
 101 int tegra_drm_unregister_client(struct tegra_drm *tegra,
 102                                 struct tegra_drm_client *client);
 103
 104 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 105 int tegra_drm_exit(struct tegra_drm *tegra);
 106
 107 struct tegra_dc_soc_info;
 108 struct tegra_output;
 109
 110 struct tegra_dc_stats {
 111         unsigned long frames;
 112         unsigned long vblank;
 113         unsigned long underflow;
 114         unsigned long overflow;
 115 };
 116
 117 struct tegra_dc {
 118         struct host1x_client client;
 119         struct host1x_syncpt *syncpt;
 120         struct device *dev;
 121         spinlock_t lock;
 122
 123         struct drm_crtc base;
 124         int powergate;
 125         int pipe;
 126
 127         struct clk *clk;
 128         struct reset_control *rst;
 129         void __iomem *regs;
 130         int irq;
 131
 132         struct tegra_output *rgb;
 133
 134         struct tegra_dc_stats stats;
 135         struct list_head list;
 136
 137         struct drm_info_list *debugfs_files;
 138         struct drm_minor *minor;
 139         struct dentry *debugfs;
 140
 141         /* page-flip handling */
 142         struct drm_pending_vblank_event *event;
 143
 144         const struct tegra_dc_soc_info *soc;
 145
 146         struct iommu_domain *domain;
 147 };
 148
 149 static inline struct tegra_dc *
 150 host1x_client_to_dc(struct host1x_client *client)
 151 {
 152         return container_of(client, struct tegra_dc, client);
 153 }
 154
 155 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 156 {
 157         return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
 158 }
 159
 160 static inline void tegra_dc_writel(struct tegra_dc *dc, u32 value,
 161                                    unsigned long offset)
 162 {
 163         writel(value, dc->regs + (offset << 2));
 164 }
 165
 166 static inline u32 tegra_dc_readl(struct tegra_dc *dc, unsigned long offset)
 167 {
 168         return readl(dc->regs + (offset << 2));
 169 }
 170
 171 struct tegra_dc_window {
 172         struct {
 173                 unsigned int x;
 174                 unsigned int y;
 175                 unsigned int w;
 176                 unsigned int h;
 177         } src;
 178         struct {
 179                 unsigned int x;
 180                 unsigned int y;
 181                 unsigned int w;
 182                 unsigned int h;
 183         } dst;
 184         unsigned int bits_per_pixel;
 185         unsigned int stride[2];
 186         unsigned long base[3];
 187         bool bottom_up;
 188
 189         struct tegra_bo_tiling tiling;
 190         u32 format;
 191         u32 swap;
 192 };
 193
 194 /* from dc.c */
 195 u32 tegra_dc_get_vblank_counter(struct tegra_dc *dc);
 196 void tegra_dc_enable_vblank(struct tegra_dc *dc);
 197 void tegra_dc_disable_vblank(struct tegra_dc *dc);
 198 void tegra_dc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
 199 void tegra_dc_commit(struct tegra_dc *dc);
 200 int tegra_dc_state_setup_clock(struct tegra_dc *dc,
 201                                struct drm_crtc_state *crtc_state,
 202                                struct clk *clk, unsigned long pclk,
 203                                unsigned int div);
 204
 205 struct tegra_output {
 206         struct device_node *of_node;
 207         struct device *dev;
 208
 209         struct drm_panel *panel;
 210         struct i2c_adapter *ddc;
 211         const struct edid *edid;
 212         unsigned int hpd_irq;
 213         int hpd_gpio;
 214         enum of_gpio_flags hpd_gpio_flags;
 215
 216         struct drm_encoder encoder;
 217         struct drm_connector connector;
 218 };
 219
 220 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 221 {
 222         return container_of(e, struct tegra_output, encoder);
 223 }
 224
 225 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 226 {
 227         return container_of(c, struct tegra_output, connector);
 228 }
 229
 230 /* from rgb.c */
 231 int tegra_dc_rgb_probe(struct tegra_dc *dc);
 232 int tegra_dc_rgb_remove(struct tegra_dc *dc);
 233 int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 234 int tegra_dc_rgb_exit(struct tegra_dc *dc);
 235
 236 /* from output.c */
 237 int tegra_output_probe(struct tegra_output *output);
 238 void tegra_output_remove(struct tegra_output *output);
 239 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 240 void tegra_output_exit(struct tegra_output *output);
 241
 242 int tegra_output_connector_get_modes(struct drm_connector *connector);
 243 struct drm_encoder *
 244 tegra_output_connector_best_encoder(struct drm_connector *connector);
 245 enum drm_connector_status
 246 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 247 void tegra_output_connector_destroy(struct drm_connector *connector);
 248
 249 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 250
 251 /* from dpaux.c */
 252 struct drm_dp_link;
 253
 254 struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
 255 enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
 256 int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
 257 int drm_dp_aux_detach(struct drm_dp_aux *aux);
 258 int drm_dp_aux_enable(struct drm_dp_aux *aux);
 259 int drm_dp_aux_disable(struct drm_dp_aux *aux);
 260 int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
 261 int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
 262                      u8 pattern);
 263
 264 /* from fb.c */
 265 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 266                                     unsigned int index);
 267 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 268 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 269                         struct tegra_bo_tiling *tiling);
 270 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 271                                         struct drm_file *file,
 272                                         const struct drm_mode_fb_cmd2 *cmd);
 273 int tegra_drm_fb_prepare(struct drm_device *drm);
 274 void tegra_drm_fb_free(struct drm_device *drm);
 275 int tegra_drm_fb_init(struct drm_device *drm);
 276 void tegra_drm_fb_exit(struct drm_device *drm);
 277 void tegra_drm_fb_suspend(struct drm_device *drm);
 278 void tegra_drm_fb_resume(struct drm_device *drm);
 279 #ifdef CONFIG_DRM_FBDEV_EMULATION
 280 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 281 void tegra_fb_output_poll_changed(struct drm_device *drm);
 282 #endif
 283
 284 extern struct platform_driver tegra_dc_driver;
 285 extern struct platform_driver tegra_hdmi_driver;
 286 extern struct platform_driver tegra_dsi_driver;
 287 extern struct platform_driver tegra_dpaux_driver;
 288 extern struct platform_driver tegra_sor_driver;
 289 extern struct platform_driver tegra_gr2d_driver;
 290 extern struct platform_driver tegra_gr3d_driver;
 291
 292 #endif /* HOST1X_DRM_H */