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