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
 182 struct tegra_output_ops {
 183         int (*enable)(struct tegra_output *output);
 184         int (*disable)(struct tegra_output *output);
 185         int (*setup_clock)(struct tegra_output *output, struct clk *clk,
 186                            unsigned long pclk, unsigned int *div);
 187         int (*check_mode)(struct tegra_output *output,
 188                           struct drm_display_mode *mode,
 189                           enum drm_mode_status *status);
 190         enum drm_connector_status (*detect)(struct tegra_output *output);
 191 };
 192
 193 enum tegra_output_type {
 194         TEGRA_OUTPUT_RGB,
 195         TEGRA_OUTPUT_HDMI,
 196         TEGRA_OUTPUT_DSI,
 197         TEGRA_OUTPUT_EDP,
 198 };
 199
 200 struct tegra_output {
 201         struct device_node *of_node;
 202         struct device *dev;
 203
 204         const struct tegra_output_ops *ops;
 205         enum tegra_output_type type;
 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
 213         struct drm_encoder encoder;
 214         struct drm_connector connector;
 215 };
 216
 217 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 218 {
 219         return container_of(e, struct tegra_output, encoder);
 220 }
 221
 222 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 223 {
 224         return container_of(c, struct tegra_output, connector);
 225 }
 226
 227 static inline int tegra_output_enable(struct tegra_output *output)
 228 {
 229         if (output && output->ops && output->ops->enable)
 230                 return output->ops->enable(output);
 231
 232         return output ? -ENOSYS : -EINVAL;
 233 }
 234
 235 static inline int tegra_output_disable(struct tegra_output *output)
 236 {
 237         if (output && output->ops && output->ops->disable)
 238                 return output->ops->disable(output);
 239
 240         return output ? -ENOSYS : -EINVAL;
 241 }
 242
 243 static inline int tegra_output_setup_clock(struct tegra_output *output,
 244                                            struct clk *clk, unsigned long pclk,
 245                                            unsigned int *div)
 246 {
 247         if (output && output->ops && output->ops->setup_clock)
 248                 return output->ops->setup_clock(output, clk, pclk, div);
 249
 250         return output ? -ENOSYS : -EINVAL;
 251 }
 252
 253 static inline int tegra_output_check_mode(struct tegra_output *output,
 254                                           struct drm_display_mode *mode,
 255                                           enum drm_mode_status *status)
 256 {
 257         if (output && output->ops && output->ops->check_mode)
 258                 return output->ops->check_mode(output, mode, status);
 259
 260         return output ? -ENOSYS : -EINVAL;
 261 }
 262
 263 /* from rgb.c */
 264 int tegra_dc_rgb_probe(struct tegra_dc *dc);
 265 int tegra_dc_rgb_remove(struct tegra_dc *dc);
 266 int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 267 int tegra_dc_rgb_exit(struct tegra_dc *dc);
 268
 269 /* from output.c */
 270 int tegra_output_probe(struct tegra_output *output);
 271 int tegra_output_remove(struct tegra_output *output);
 272 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 273 int tegra_output_exit(struct tegra_output *output);
 274
 275 /* from dpaux.c */
 276 struct tegra_dpaux;
 277 struct drm_dp_link;
 278
 279 struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
 280 enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
 281 int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
 282 int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
 283 int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
 284 int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
 285 int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
 286 int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
 287                       u8 pattern);
 288
 289 /* from fb.c */
 290 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 291                                     unsigned int index);
 292 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 293 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 294                         struct tegra_bo_tiling *tiling);
 295 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 296                                         struct drm_file *file,
 297                                         struct drm_mode_fb_cmd2 *cmd);
 298 int tegra_drm_fb_prepare(struct drm_device *drm);
 299 void tegra_drm_fb_free(struct drm_device *drm);
 300 int tegra_drm_fb_init(struct drm_device *drm);
 301 void tegra_drm_fb_exit(struct drm_device *drm);
 302 #ifdef CONFIG_DRM_TEGRA_FBDEV
 303 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 304 void tegra_fb_output_poll_changed(struct drm_device *drm);
 305 #endif
 306
 307 extern struct platform_driver tegra_dc_driver;
 308 extern struct platform_driver tegra_dsi_driver;
 309 extern struct platform_driver tegra_sor_driver;
 310 extern struct platform_driver tegra_hdmi_driver;
 311 extern struct platform_driver tegra_dpaux_driver;
 312 extern struct platform_driver tegra_gr2d_driver;
 313 extern struct platform_driver tegra_gr3d_driver;
 314
 315 #endif /* HOST1X_DRM_H */