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
  16 #include <drm/drmP.h>
  17 #include <drm/drm_crtc_helper.h>
  18 #include <drm/drm_edid.h>
  19 #include <drm/drm_fb_helper.h>
  20 #include <drm/drm_fixed.h>
  21
  22 #include "gem.h"
  23
  24 struct reset_control;
  25
  26 struct tegra_fb {
  27         struct drm_framebuffer base;
  28         struct tegra_bo **planes;
  29         unsigned int num_planes;
  30 };
  31
  32 #ifdef CONFIG_DRM_TEGRA_FBDEV
  33 struct tegra_fbdev {
  34         struct drm_fb_helper base;
  35         struct tegra_fb *fb;
  36 };
  37 #endif
  38
  39 struct tegra_drm {
  40         struct drm_device *drm;
  41
  42         struct iommu_domain *domain;
  43         struct drm_mm mm;
  44
  45         struct mutex clients_lock;
  46         struct list_head clients;
  47
  48 #ifdef CONFIG_DRM_TEGRA_FBDEV
  49         struct tegra_fbdev *fbdev;
  50 #endif
  51
  52         unsigned int pitch_align;
  53 };
  54
  55 struct tegra_drm_client;
  56
  57 struct tegra_drm_context {
  58         struct tegra_drm_client *client;
  59         struct host1x_channel *channel;
  60         struct list_head list;
  61 };
  62
  63 struct tegra_drm_client_ops {
  64         int (*open_channel)(struct tegra_drm_client *client,
  65                             struct tegra_drm_context *context);
  66         void (*close_channel)(struct tegra_drm_context *context);
  67         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  68         int (*submit)(struct tegra_drm_context *context,
  69                       struct drm_tegra_submit *args, struct drm_device *drm,
  70                       struct drm_file *file);
  71 };
  72
  73 int tegra_drm_submit(struct tegra_drm_context *context,
  74                      struct drm_tegra_submit *args, struct drm_device *drm,
  75                      struct drm_file *file);
  76
  77 struct tegra_drm_client {
  78         struct host1x_client base;
  79         struct list_head list;
  80
  81         const struct tegra_drm_client_ops *ops;
  82 };
  83
  84 static inline struct tegra_drm_client *
  85 host1x_to_drm_client(struct host1x_client *client)
  86 {
  87         return container_of(client, struct tegra_drm_client, base);
  88 }
  89
  90 int tegra_drm_register_client(struct tegra_drm *tegra,
  91                               struct tegra_drm_client *client);
  92 int tegra_drm_unregister_client(struct tegra_drm *tegra,
  93                                 struct tegra_drm_client *client);
  94
  95 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
  96 int tegra_drm_exit(struct tegra_drm *tegra);
  97
  98 struct tegra_dc_soc_info;
  99 struct tegra_output;
 100
 101 struct tegra_dc {
 102         struct host1x_client client;
 103         struct device *dev;
 104         spinlock_t lock;
 105
 106         struct drm_crtc base;
 107         int powergate;
 108         int pipe;
 109
 110         struct clk *clk;
 111         struct reset_control *rst;
 112         void __iomem *regs;
 113         int irq;
 114
 115         struct tegra_output *rgb;
 116
 117         struct list_head list;
 118
 119         struct drm_info_list *debugfs_files;
 120         struct drm_minor *minor;
 121         struct dentry *debugfs;
 122
 123         /* page-flip handling */
 124         struct drm_pending_vblank_event *event;
 125
 126         const struct tegra_dc_soc_info *soc;
 127
 128         struct iommu_domain *domain;
 129 };
 130
 131 static inline struct tegra_dc *
 132 host1x_client_to_dc(struct host1x_client *client)
 133 {
 134         return container_of(client, struct tegra_dc, client);
 135 }
 136
 137 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 138 {
 139         return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
 140 }
 141
 142 static inline void tegra_dc_writel(struct tegra_dc *dc, u32 value,
 143                                    unsigned long offset)
 144 {
 145         writel(value, dc->regs + (offset << 2));
 146 }
 147
 148 static inline u32 tegra_dc_readl(struct tegra_dc *dc, unsigned long offset)
 149 {
 150         return readl(dc->regs + (offset << 2));
 151 }
 152
 153 struct tegra_dc_window {
 154         struct {
 155                 unsigned int x;
 156                 unsigned int y;
 157                 unsigned int w;
 158                 unsigned int h;
 159         } src;
 160         struct {
 161                 unsigned int x;
 162                 unsigned int y;
 163                 unsigned int w;
 164                 unsigned int h;
 165         } dst;
 166         unsigned int bits_per_pixel;
 167         unsigned int format;
 168         unsigned int swap;
 169         unsigned int stride[2];
 170         unsigned long base[3];
 171         bool bottom_up;
 172
 173         struct tegra_bo_tiling tiling;
 174 };
 175
 176 /* from dc.c */
 177 void tegra_dc_enable_vblank(struct tegra_dc *dc);
 178 void tegra_dc_disable_vblank(struct tegra_dc *dc);
 179 void tegra_dc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
 180 void tegra_dc_commit(struct tegra_dc *dc);
 181 int tegra_dc_setup_clock(struct tegra_dc *dc, struct clk *parent,
 182                          unsigned long pclk, unsigned int div);
 183
 184 struct tegra_output_ops {
 185         int (*enable)(struct tegra_output *output);
 186         int (*disable)(struct tegra_output *output);
 187         int (*setup_clock)(struct tegra_output *output, struct clk *clk,
 188                            unsigned long pclk, unsigned int *div);
 189         int (*check_mode)(struct tegra_output *output,
 190                           struct drm_display_mode *mode,
 191                           enum drm_mode_status *status);
 192         enum drm_connector_status (*detect)(struct tegra_output *output);
 193 };
 194
 195 enum tegra_output_type {
 196         TEGRA_OUTPUT_EDP,
 197 };
 198
 199 struct tegra_output {
 200         struct device_node *of_node;
 201         struct device *dev;
 202
 203         const struct tegra_output_ops *ops;
 204         enum tegra_output_type type;
 205
 206         struct drm_panel *panel;
 207         struct i2c_adapter *ddc;
 208         const struct edid *edid;
 209         unsigned int hpd_irq;
 210         int hpd_gpio;
 211
 212         struct drm_encoder encoder;
 213         struct drm_connector connector;
 214 };
 215
 216 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 217 {
 218         return container_of(e, struct tegra_output, encoder);
 219 }
 220
 221 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 222 {
 223         return container_of(c, struct tegra_output, connector);
 224 }
 225
 226 static inline int tegra_output_enable(struct tegra_output *output)
 227 {
 228         if (output && output->ops && output->ops->enable)
 229                 return output->ops->enable(output);
 230
 231         return output ? -ENOSYS : -EINVAL;
 232 }
 233
 234 static inline int tegra_output_disable(struct tegra_output *output)
 235 {
 236         if (output && output->ops && output->ops->disable)
 237                 return output->ops->disable(output);
 238
 239         return output ? -ENOSYS : -EINVAL;
 240 }
 241
 242 static inline int tegra_output_check_mode(struct tegra_output *output,
 243                                           struct drm_display_mode *mode,
 244                                           enum drm_mode_status *status)
 245 {
 246         if (output && output->ops && output->ops->check_mode)
 247                 return output->ops->check_mode(output, mode, status);
 248
 249         return output ? -ENOSYS : -EINVAL;
 250 }
 251
 252 /* from rgb.c */
 253 int tegra_dc_rgb_probe(struct tegra_dc *dc);
 254 int tegra_dc_rgb_remove(struct tegra_dc *dc);
 255 int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 256 int tegra_dc_rgb_exit(struct tegra_dc *dc);
 257
 258 /* from output.c */
 259 int tegra_output_probe(struct tegra_output *output);
 260 int tegra_output_remove(struct tegra_output *output);
 261 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 262 int tegra_output_exit(struct tegra_output *output);
 263
 264 int tegra_output_connector_get_modes(struct drm_connector *connector);
 265 struct drm_encoder *
 266 tegra_output_connector_best_encoder(struct drm_connector *connector);
 267 enum drm_connector_status
 268 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 269 void tegra_output_connector_destroy(struct drm_connector *connector);
 270
 271 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 272
 273 /* from dpaux.c */
 274 struct tegra_dpaux;
 275 struct drm_dp_link;
 276
 277 struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
 278 enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
 279 int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
 280 int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
 281 int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
 282 int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
 283 int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
 284 int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
 285                       u8 pattern);
 286
 287 /* from fb.c */
 288 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 289                                     unsigned int index);
 290 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 291 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 292                         struct tegra_bo_tiling *tiling);
 293 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 294                                         struct drm_file *file,
 295                                         struct drm_mode_fb_cmd2 *cmd);
 296 int tegra_drm_fb_prepare(struct drm_device *drm);
 297 void tegra_drm_fb_free(struct drm_device *drm);
 298 int tegra_drm_fb_init(struct drm_device *drm);
 299 void tegra_drm_fb_exit(struct drm_device *drm);
 300 #ifdef CONFIG_DRM_TEGRA_FBDEV
 301 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 302 void tegra_fb_output_poll_changed(struct drm_device *drm);
 303 #endif
 304
 305 extern struct platform_driver tegra_dc_driver;
 306 extern struct platform_driver tegra_dsi_driver;
 307 extern struct platform_driver tegra_sor_driver;
 308 extern struct platform_driver tegra_hdmi_driver;
 309 extern struct platform_driver tegra_dpaux_driver;
 310 extern struct platform_driver tegra_gr2d_driver;
 311 extern struct platform_driver tegra_gr3d_driver;
 312
 313 #endif /* HOST1X_DRM_H */