drivers/gpu/drm/exynos/exynos_drm_drv.h

   1 /* exynos_drm_drv.h
   2  *
   3  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   4  * Authors:
   5  *      Inki Dae <inki.dae@samsung.com>
   6  *      Joonyoung Shim <jy0922.shim@samsung.com>
   7  *      Seung-Woo Kim <sw0312.kim@samsung.com>
   8  *
   9  * This program is free software; you can redistribute  it and/or modify it
  10  * under  the terms of  the GNU General  Public License as published by the
  11  * Free Software Foundation;  either version 2 of the  License, or (at your
  12  * option) any later version.
  13  */
  14
  15 #ifndef _EXYNOS_DRM_DRV_H_
  16 #define _EXYNOS_DRM_DRV_H_
  17
  18 #include <linux/module.h>
  19
  20 #define MAX_CRTC        3
  21 #define MAX_PLANE       5
  22 #define MAX_FB_BUFFER   4
  23 #define DEFAULT_ZPOS    -1
  24
  25 #define _wait_for(COND, MS) ({ \
  26         unsigned long timeout__ = jiffies + msecs_to_jiffies(MS);       \
  27         int ret__ = 0;                                                  \
  28         while (!(COND)) {                                               \
  29                 if (time_after(jiffies, timeout__)) {                   \
  30                         ret__ = -ETIMEDOUT;                             \
  31                         break;                                          \
  32                 }                                                       \
  33         }                                                               \
  34         ret__;                                                          \
  35 })
  36
  37 #define wait_for(COND, MS) _wait_for(COND, MS)
  38
  39 struct drm_device;
  40 struct exynos_drm_overlay;
  41 struct drm_connector;
  42
  43 extern unsigned int drm_vblank_offdelay;
  44
  45 /* this enumerates display type. */
  46 enum exynos_drm_output_type {
  47         EXYNOS_DISPLAY_TYPE_NONE,
  48         /* RGB or CPU Interface. */
  49         EXYNOS_DISPLAY_TYPE_LCD,
  50         /* HDMI Interface. */
  51         EXYNOS_DISPLAY_TYPE_HDMI,
  52         /* Virtual Display Interface. */
  53         EXYNOS_DISPLAY_TYPE_VIDI,
  54 };
  55
  56 /*
  57  * Exynos drm common overlay structure.
  58  *
  59  * @fb_x: offset x on a framebuffer to be displayed.
  60  *      - the unit is screen coordinates.
  61  * @fb_y: offset y on a framebuffer to be displayed.
  62  *      - the unit is screen coordinates.
  63  * @fb_width: width of a framebuffer.
  64  * @fb_height: height of a framebuffer.
  65  * @src_width: width of a partial image to be displayed from framebuffer.
  66  * @src_height: height of a partial image to be displayed from framebuffer.
  67  * @crtc_x: offset x on hardware screen.
  68  * @crtc_y: offset y on hardware screen.
  69  * @crtc_width: window width to be displayed (hardware screen).
  70  * @crtc_height: window height to be displayed (hardware screen).
  71  * @mode_width: width of screen mode.
  72  * @mode_height: height of screen mode.
  73  * @refresh: refresh rate.
  74  * @scan_flag: interlace or progressive way.
  75  *      (it could be DRM_MODE_FLAG_*)
  76  * @bpp: pixel size.(in bit)
  77  * @pixel_format: fourcc pixel format of this overlay
  78  * @dma_addr: array of bus(accessed by dma) address to the memory region
  79  *            allocated for a overlay.
  80  * @zpos: order of overlay layer(z position).
  81  * @default_win: a window to be enabled.
  82  * @color_key: color key on or off.
  83  * @index_color: if using color key feature then this value would be used
  84  *                      as index color.
  85  * @local_path: in case of lcd type, local path mode on or off.
  86  * @transparency: transparency on or off.
  87  * @activated: activated or not.
  88  *
  89  * this structure is common to exynos SoC and its contents would be copied
  90  * to hardware specific overlay info.
  91  */
  92 struct exynos_drm_overlay {
  93         unsigned int fb_x;
  94         unsigned int fb_y;
  95         unsigned int fb_width;
  96         unsigned int fb_height;
  97         unsigned int src_width;
  98         unsigned int src_height;
  99         unsigned int crtc_x;
 100         unsigned int crtc_y;
 101         unsigned int crtc_width;
 102         unsigned int crtc_height;
 103         unsigned int mode_width;
 104         unsigned int mode_height;
 105         unsigned int refresh;
 106         unsigned int scan_flag;
 107         unsigned int bpp;
 108         unsigned int pitch;
 109         uint32_t pixel_format;
 110         dma_addr_t dma_addr[MAX_FB_BUFFER];
 111         int zpos;
 112
 113         bool default_win;
 114         bool color_key;
 115         unsigned int index_color;
 116         bool local_path;
 117         bool transparency;
 118         bool activated;
 119 };
 120
 121 /*
 122  * Exynos DRM Display Structure.
 123  *      - this structure is common to analog tv, digital tv and lcd panel.
 124  *
 125  * @initialize: initializes the display with drm_dev
 126  * @remove: cleans up the display for removal
 127  * @mode_fixup: fix mode data comparing to hw specific display mode.
 128  * @mode_set: convert drm_display_mode to hw specific display mode and
 129  *            would be called by encoder->mode_set().
 130  * @check_mode: check if mode is valid or not.
 131  * @dpms: display device on or off.
 132  * @commit: apply changes to hw
 133  */
 134 struct exynos_drm_display;
 135 struct exynos_drm_display_ops {
 136         int (*initialize)(struct exynos_drm_display *display,
 137                                 struct drm_device *drm_dev);
 138         int (*create_connector)(struct exynos_drm_display *display,
 139                                 struct drm_encoder *encoder);
 140         void (*remove)(struct exynos_drm_display *display);
 141         void (*mode_fixup)(struct exynos_drm_display *display,
 142                                 struct drm_connector *connector,
 143                                 const struct drm_display_mode *mode,
 144                                 struct drm_display_mode *adjusted_mode);
 145         void (*mode_set)(struct exynos_drm_display *display,
 146                                 struct drm_display_mode *mode);
 147         int (*check_mode)(struct exynos_drm_display *display,
 148                                 struct drm_display_mode *mode);
 149         void (*dpms)(struct exynos_drm_display *display, int mode);
 150         void (*commit)(struct exynos_drm_display *display);
 151 };
 152
 153 /*
 154  * Exynos drm display structure, maps 1:1 with an encoder/connector
 155  *
 156  * @list: the list entry for this manager
 157  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 158  * @encoder: encoder object this display maps to
 159  * @connector: connector object this display maps to
 160  * @ops: pointer to callbacks for exynos drm specific functionality
 161  * @ctx: A pointer to the display's implementation specific context
 162  */
 163 struct exynos_drm_display {
 164         struct list_head list;
 165         enum exynos_drm_output_type type;
 166         struct drm_encoder *encoder;
 167         struct drm_connector *connector;
 168         struct exynos_drm_display_ops *ops;
 169         void *ctx;
 170 };
 171
 172 /*
 173  * Exynos drm manager ops
 174  *
 175  * @initialize: initializes the manager with drm_dev
 176  * @remove: cleans up the manager for removal
 177  * @dpms: control device power.
 178  * @mode_fixup: fix mode data before applying it
 179  * @mode_set: set the given mode to the manager
 180  * @commit: set current hw specific display mode to hw.
 181  * @enable_vblank: specific driver callback for enabling vblank interrupt.
 182  * @disable_vblank: specific driver callback for disabling vblank interrupt.
 183  * @wait_for_vblank: wait for vblank interrupt to make sure that
 184  *      hardware overlay is updated.
 185  * @win_mode_set: copy drm overlay info to hw specific overlay info.
 186  * @win_commit: apply hardware specific overlay data to registers.
 187  * @win_enable: enable hardware specific overlay.
 188  * @win_disable: disable hardware specific overlay.
 189  */
 190 struct exynos_drm_manager;
 191 struct exynos_drm_manager_ops {
 192         int (*initialize)(struct exynos_drm_manager *mgr,
 193                                 struct drm_device *drm_dev, int pipe);
 194         void (*remove)(struct exynos_drm_manager *mgr);
 195         void (*dpms)(struct exynos_drm_manager *mgr, int mode);
 196         bool (*mode_fixup)(struct exynos_drm_manager *mgr,
 197                                 const struct drm_display_mode *mode,
 198                                 struct drm_display_mode *adjusted_mode);
 199         void (*mode_set)(struct exynos_drm_manager *mgr,
 200                                 const struct drm_display_mode *mode);
 201         void (*commit)(struct exynos_drm_manager *mgr);
 202         int (*enable_vblank)(struct exynos_drm_manager *mgr);
 203         void (*disable_vblank)(struct exynos_drm_manager *mgr);
 204         void (*wait_for_vblank)(struct exynos_drm_manager *mgr);
 205         void (*win_mode_set)(struct exynos_drm_manager *mgr,
 206                                 struct exynos_drm_overlay *overlay);
 207         void (*win_commit)(struct exynos_drm_manager *mgr, int zpos);
 208         void (*win_enable)(struct exynos_drm_manager *mgr, int zpos);
 209         void (*win_disable)(struct exynos_drm_manager *mgr, int zpos);
 210 };
 211
 212 /*
 213  * Exynos drm common manager structure, maps 1:1 with a crtc
 214  *
 215  * @list: the list entry for this manager
 216  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 217  * @drm_dev: pointer to the drm device
 218  * @pipe: the pipe number for this crtc/manager
 219  * @ops: pointer to callbacks for exynos drm specific functionality
 220  * @ctx: A pointer to the manager's implementation specific context
 221  */
 222 struct exynos_drm_manager {
 223         struct list_head list;
 224         enum exynos_drm_output_type type;
 225         struct drm_device *drm_dev;
 226         int pipe;
 227         struct exynos_drm_manager_ops *ops;
 228         void *ctx;
 229 };
 230
 231 struct exynos_drm_g2d_private {
 232         struct device           *dev;
 233         struct list_head        inuse_cmdlist;
 234         struct list_head        event_list;
 235         struct list_head        userptr_list;
 236 };
 237
 238 struct exynos_drm_ipp_private {
 239         struct device   *dev;
 240         struct list_head        event_list;
 241 };
 242
 243 struct drm_exynos_file_private {
 244         struct exynos_drm_g2d_private   *g2d_priv;
 245         struct exynos_drm_ipp_private   *ipp_priv;
 246         struct file                     *anon_filp;
 247 };
 248
 249 /*
 250  * Exynos drm private structure.
 251  *
 252  * @da_start: start address to device address space.
 253  *      with iommu, device address space starts from this address
 254  *      otherwise default one.
 255  * @da_space_size: size of device address space.
 256  *      if 0 then default value is used for it.
 257  */
 258 struct exynos_drm_private {
 259         struct drm_fb_helper *fb_helper;
 260
 261         /* list head for new event to be added. */
 262         struct list_head pageflip_event_list;
 263
 264         /*
 265          * created crtc object would be contained at this array and
 266          * this array is used to be aware of which crtc did it request vblank.
 267          */
 268         struct drm_crtc *crtc[MAX_CRTC];
 269         struct drm_property *plane_zpos_property;
 270         struct drm_property *crtc_mode_property;
 271
 272         unsigned long da_start;
 273         unsigned long da_space_size;
 274 };
 275
 276 /*
 277  * Exynos drm sub driver structure.
 278  *
 279  * @list: sub driver has its own list object to register to exynos drm driver.
 280  * @dev: pointer to device object for subdrv device driver.
 281  * @drm_dev: pointer to drm_device and this pointer would be set
 282  *      when sub driver calls exynos_drm_subdrv_register().
 283  * @manager: subdrv has its own manager to control a hardware appropriately
 284  *      and we can access a hardware drawing on this manager.
 285  * @probe: this callback would be called by exynos drm driver after
 286  *      subdrv is registered to it.
 287  * @remove: this callback is used to release resources created
 288  *      by probe callback.
 289  * @open: this would be called with drm device file open.
 290  * @close: this would be called with drm device file close.
 291  */
 292 struct exynos_drm_subdrv {
 293         struct list_head list;
 294         struct device *dev;
 295         struct drm_device *drm_dev;
 296
 297         int (*probe)(struct drm_device *drm_dev, struct device *dev);
 298         void (*remove)(struct drm_device *drm_dev, struct device *dev);
 299         int (*open)(struct drm_device *drm_dev, struct device *dev,
 300                         struct drm_file *file);
 301         void (*close)(struct drm_device *drm_dev, struct device *dev,
 302                         struct drm_file *file);
 303 };
 304
 305 /*
 306  * this function calls a probe callback registered to sub driver list and
 307  * create its own encoder and connector and then set drm_device object
 308  * to global one.
 309  */
 310 int exynos_drm_device_register(struct drm_device *dev);
 311 /*
 312  * this function calls a remove callback registered to sub driver list and
 313  * destroy its own encoder and connetor.
 314  */
 315 int exynos_drm_device_unregister(struct drm_device *dev);
 316
 317 int exynos_drm_initialize_managers(struct drm_device *dev);
 318 void exynos_drm_remove_managers(struct drm_device *dev);
 319 int exynos_drm_initialize_displays(struct drm_device *dev);
 320 void exynos_drm_remove_displays(struct drm_device *dev);
 321
 322 int exynos_drm_manager_register(struct exynos_drm_manager *manager);
 323 int exynos_drm_manager_unregister(struct exynos_drm_manager *manager);
 324 int exynos_drm_display_register(struct exynos_drm_display *display);
 325 int exynos_drm_display_unregister(struct exynos_drm_display *display);
 326
 327 /*
 328  * this function would be called by sub drivers such as display controller
 329  * or hdmi driver to register this sub driver object to exynos drm driver
 330  * and when a sub driver is registered to exynos drm driver a probe callback
 331  * of the sub driver is called and creates its own encoder and connector.
 332  */
 333 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 334
 335 /* this function removes subdrv list from exynos drm driver */
 336 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 337
 338 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 339 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 340
 341 /*
 342  * this function registers exynos drm hdmi platform device. It ensures only one
 343  * instance of the device is created.
 344  */
 345 int exynos_platform_device_hdmi_register(void);
 346
 347 /*
 348  * this function unregisters exynos drm hdmi platform device if it exists.
 349  */
 350 void exynos_platform_device_hdmi_unregister(void);
 351
 352 /*
 353  * this function registers exynos drm ipp platform device.
 354  */
 355 int exynos_platform_device_ipp_register(void);
 356
 357 /*
 358  * this function unregisters exynos drm ipp platform device if it exists.
 359  */
 360 void exynos_platform_device_ipp_unregister(void);
 361
 362 #ifdef CONFIG_DRM_EXYNOS_DPI
 363 int exynos_dpi_probe(struct device *dev);
 364 int exynos_dpi_remove(struct device *dev);
 365 #else
 366 static inline int exynos_dpi_probe(struct device *dev) { return 0; }
 367 static inline int exynos_dpi_remove(struct device *dev) { return 0; }
 368 #endif
 369
 370 extern struct platform_driver dp_driver;
 371 extern struct platform_driver dsi_driver;
 372 extern struct platform_driver fimd_driver;
 373 extern struct platform_driver hdmi_driver;
 374 extern struct platform_driver mixer_driver;
 375 extern struct platform_driver exynos_drm_common_hdmi_driver;
 376 extern struct platform_driver vidi_driver;
 377 extern struct platform_driver g2d_driver;
 378 extern struct platform_driver fimc_driver;
 379 extern struct platform_driver rotator_driver;
 380 extern struct platform_driver gsc_driver;
 381 extern struct platform_driver ipp_driver;
 382 #endif