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 /* This enumerates device type. */
  44 enum exynos_drm_device_type {
  45         EXYNOS_DEVICE_TYPE_NONE,
  46         EXYNOS_DEVICE_TYPE_CRTC,
  47         EXYNOS_DEVICE_TYPE_CONNECTOR,
  48 };
  49
  50 /* this enumerates display type. */
  51 enum exynos_drm_output_type {
  52         EXYNOS_DISPLAY_TYPE_NONE,
  53         /* RGB or CPU Interface. */
  54         EXYNOS_DISPLAY_TYPE_LCD,
  55         /* HDMI Interface. */
  56         EXYNOS_DISPLAY_TYPE_HDMI,
  57         /* Virtual Display Interface. */
  58         EXYNOS_DISPLAY_TYPE_VIDI,
  59 };
  60
  61 /*
  62  * Exynos drm common overlay structure.
  63  *
  64  * @fb_x: offset x on a framebuffer to be displayed.
  65  *      - the unit is screen coordinates.
  66  * @fb_y: offset y on a framebuffer to be displayed.
  67  *      - the unit is screen coordinates.
  68  * @fb_width: width of a framebuffer.
  69  * @fb_height: height of a framebuffer.
  70  * @src_width: width of a partial image to be displayed from framebuffer.
  71  * @src_height: height of a partial image to be displayed from framebuffer.
  72  * @crtc_x: offset x on hardware screen.
  73  * @crtc_y: offset y on hardware screen.
  74  * @crtc_width: window width to be displayed (hardware screen).
  75  * @crtc_height: window height to be displayed (hardware screen).
  76  * @mode_width: width of screen mode.
  77  * @mode_height: height of screen mode.
  78  * @refresh: refresh rate.
  79  * @scan_flag: interlace or progressive way.
  80  *      (it could be DRM_MODE_FLAG_*)
  81  * @bpp: pixel size.(in bit)
  82  * @pixel_format: fourcc pixel format of this overlay
  83  * @dma_addr: array of bus(accessed by dma) address to the memory region
  84  *            allocated for a overlay.
  85  * @zpos: order of overlay layer(z position).
  86  * @default_win: a window to be enabled.
  87  * @color_key: color key on or off.
  88  * @index_color: if using color key feature then this value would be used
  89  *                      as index color.
  90  * @local_path: in case of lcd type, local path mode on or off.
  91  * @transparency: transparency on or off.
  92  * @activated: activated or not.
  93  *
  94  * this structure is common to exynos SoC and its contents would be copied
  95  * to hardware specific overlay info.
  96  */
  97 struct exynos_drm_overlay {
  98         unsigned int fb_x;
  99         unsigned int fb_y;
 100         unsigned int fb_width;
 101         unsigned int fb_height;
 102         unsigned int src_width;
 103         unsigned int src_height;
 104         unsigned int crtc_x;
 105         unsigned int crtc_y;
 106         unsigned int crtc_width;
 107         unsigned int crtc_height;
 108         unsigned int mode_width;
 109         unsigned int mode_height;
 110         unsigned int refresh;
 111         unsigned int scan_flag;
 112         unsigned int bpp;
 113         unsigned int pitch;
 114         uint32_t pixel_format;
 115         dma_addr_t dma_addr[MAX_FB_BUFFER];
 116         int zpos;
 117
 118         bool default_win;
 119         bool color_key;
 120         unsigned int index_color;
 121         bool local_path;
 122         bool transparency;
 123         bool activated;
 124 };
 125
 126 /*
 127  * Exynos DRM Display Structure.
 128  *      - this structure is common to analog tv, digital tv and lcd panel.
 129  *
 130  * @remove: cleans up the display for removal
 131  * @mode_fixup: fix mode data comparing to hw specific display mode.
 132  * @mode_set: convert drm_display_mode to hw specific display mode and
 133  *            would be called by encoder->mode_set().
 134  * @check_mode: check if mode is valid or not.
 135  * @dpms: display device on or off.
 136  * @commit: apply changes to hw
 137  */
 138 struct exynos_drm_display;
 139 struct exynos_drm_display_ops {
 140         int (*create_connector)(struct exynos_drm_display *display,
 141                                 struct drm_encoder *encoder);
 142         void (*remove)(struct exynos_drm_display *display);
 143         void (*mode_fixup)(struct exynos_drm_display *display,
 144                                 struct drm_connector *connector,
 145                                 const struct drm_display_mode *mode,
 146                                 struct drm_display_mode *adjusted_mode);
 147         void (*mode_set)(struct exynos_drm_display *display,
 148                                 struct drm_display_mode *mode);
 149         int (*check_mode)(struct exynos_drm_display *display,
 150                                 struct drm_display_mode *mode);
 151         void (*dpms)(struct exynos_drm_display *display, int mode);
 152         void (*commit)(struct exynos_drm_display *display);
 153 };
 154
 155 /*
 156  * Exynos drm display structure, maps 1:1 with an encoder/connector
 157  *
 158  * @list: the list entry for this manager
 159  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 160  * @encoder: encoder object this display maps to
 161  * @connector: connector object this display maps to
 162  * @ops: pointer to callbacks for exynos drm specific functionality
 163  * @ctx: A pointer to the display's implementation specific context
 164  */
 165 struct exynos_drm_display {
 166         struct list_head list;
 167         enum exynos_drm_output_type type;
 168         struct drm_encoder *encoder;
 169         struct drm_connector *connector;
 170         struct exynos_drm_display_ops *ops;
 171         void *ctx;
 172 };
 173
 174 /*
 175  * Exynos drm manager ops
 176  *
 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  * @te_handler: trigger to transfer video image at the tearing effect
 190  *      synchronization signal if there is a page flip request.
 191  */
 192 struct exynos_drm_manager;
 193 struct exynos_drm_manager_ops {
 194         void (*dpms)(struct exynos_drm_manager *mgr, int mode);
 195         bool (*mode_fixup)(struct exynos_drm_manager *mgr,
 196                                 const struct drm_display_mode *mode,
 197                                 struct drm_display_mode *adjusted_mode);
 198         void (*mode_set)(struct exynos_drm_manager *mgr,
 199                                 const struct drm_display_mode *mode);
 200         void (*commit)(struct exynos_drm_manager *mgr);
 201         int (*enable_vblank)(struct exynos_drm_manager *mgr);
 202         void (*disable_vblank)(struct exynos_drm_manager *mgr);
 203         void (*wait_for_vblank)(struct exynos_drm_manager *mgr);
 204         void (*win_mode_set)(struct exynos_drm_manager *mgr,
 205                                 struct exynos_drm_overlay *overlay);
 206         void (*win_commit)(struct exynos_drm_manager *mgr, int zpos);
 207         void (*win_enable)(struct exynos_drm_manager *mgr, int zpos);
 208         void (*win_disable)(struct exynos_drm_manager *mgr, int zpos);
 209         void (*te_handler)(struct exynos_drm_manager *mgr);
 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  * @crtc: crtc object.
 219  * @pipe: the pipe number for this crtc/manager
 220  * @ops: pointer to callbacks for exynos drm specific functionality
 221  * @ctx: A pointer to the manager's implementation specific context
 222  */
 223 struct exynos_drm_manager {
 224         struct list_head list;
 225         enum exynos_drm_output_type type;
 226         struct drm_device *drm_dev;
 227         struct drm_crtc *crtc;
 228         int pipe;
 229         struct exynos_drm_manager_ops *ops;
 230         void *ctx;
 231 };
 232
 233 struct exynos_drm_g2d_private {
 234         struct device           *dev;
 235         struct list_head        inuse_cmdlist;
 236         struct list_head        event_list;
 237         struct list_head        userptr_list;
 238 };
 239
 240 struct exynos_drm_ipp_private {
 241         struct device   *dev;
 242         struct list_head        event_list;
 243 };
 244
 245 struct drm_exynos_file_private {
 246         struct exynos_drm_g2d_private   *g2d_priv;
 247         struct exynos_drm_ipp_private   *ipp_priv;
 248         struct file                     *anon_filp;
 249 };
 250
 251 /*
 252  * Exynos drm private structure.
 253  *
 254  * @da_start: start address to device address space.
 255  *      with iommu, device address space starts from this address
 256  *      otherwise default one.
 257  * @da_space_size: size of device address space.
 258  *      if 0 then default value is used for it.
 259  * @pipe: the pipe number for this crtc/manager.
 260  */
 261 struct exynos_drm_private {
 262         struct drm_fb_helper *fb_helper;
 263
 264         /* list head for new event to be added. */
 265         struct list_head pageflip_event_list;
 266
 267         /*
 268          * created crtc object would be contained at this array and
 269          * this array is used to be aware of which crtc did it request vblank.
 270          */
 271         struct drm_crtc *crtc[MAX_CRTC];
 272         struct drm_property *plane_zpos_property;
 273         struct drm_property *crtc_mode_property;
 274
 275         unsigned long da_start;
 276         unsigned long da_space_size;
 277
 278         unsigned int pipe;
 279 };
 280
 281 /*
 282  * Exynos drm sub driver structure.
 283  *
 284  * @list: sub driver has its own list object to register to exynos drm driver.
 285  * @dev: pointer to device object for subdrv device driver.
 286  * @drm_dev: pointer to drm_device and this pointer would be set
 287  *      when sub driver calls exynos_drm_subdrv_register().
 288  * @manager: subdrv has its own manager to control a hardware appropriately
 289  *     and we can access a hardware drawing on this manager.
 290  * @probe: this callback would be called by exynos drm driver after
 291  *     subdrv is registered to it.
 292  * @remove: this callback is used to release resources created
 293  *     by probe callback.
 294  * @open: this would be called with drm device file open.
 295  * @close: this would be called with drm device file close.
 296  */
 297 struct exynos_drm_subdrv {
 298         struct list_head list;
 299         struct device *dev;
 300         struct drm_device *drm_dev;
 301
 302         int (*probe)(struct drm_device *drm_dev, struct device *dev);
 303         void (*remove)(struct drm_device *drm_dev, struct device *dev);
 304         int (*open)(struct drm_device *drm_dev, struct device *dev,
 305                         struct drm_file *file);
 306         void (*close)(struct drm_device *drm_dev, struct device *dev,
 307                         struct drm_file *file);
 308 };
 309
 310  /* This function would be called by non kms drivers such as g2d and ipp. */
 311 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 312
 313 /* this function removes subdrv list from exynos drm driver */
 314 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 315
 316 int exynos_drm_device_subdrv_probe(struct drm_device *dev);
 317 int exynos_drm_device_subdrv_remove(struct drm_device *dev);
 318 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 319 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 320
 321 /*
 322  * this function registers exynos drm hdmi platform device. It ensures only one
 323  * instance of the device is created.
 324  */
 325 int exynos_platform_device_hdmi_register(void);
 326
 327 /*
 328  * this function unregisters exynos drm hdmi platform device if it exists.
 329  */
 330 void exynos_platform_device_hdmi_unregister(void);
 331
 332 /*
 333  * this function registers exynos drm ipp platform device.
 334  */
 335 int exynos_platform_device_ipp_register(void);
 336
 337 /*
 338  * this function unregisters exynos drm ipp platform device if it exists.
 339  */
 340 void exynos_platform_device_ipp_unregister(void);
 341
 342 #ifdef CONFIG_DRM_EXYNOS_DPI
 343 struct exynos_drm_display * exynos_dpi_probe(struct device *dev);
 344 int exynos_dpi_remove(struct device *dev);
 345 #else
 346 static inline struct exynos_drm_display *
 347 exynos_dpi_probe(struct device *dev) { return NULL; }
 348 static inline int exynos_dpi_remove(struct device *dev) { return 0; }
 349 #endif
 350
 351 /*
 352  * this function registers exynos drm vidi platform device/driver.
 353  */
 354 int exynos_drm_probe_vidi(void);
 355
 356 /*
 357  * this function unregister exynos drm vidi platform device/driver.
 358  */
 359 void exynos_drm_remove_vidi(void);
 360
 361 /* This function creates a encoder and a connector, and initializes them. */
 362 int exynos_drm_create_enc_conn(struct drm_device *dev,
 363                                 struct exynos_drm_display *display);
 364
 365 int exynos_drm_component_add(struct device *dev,
 366                                 enum exynos_drm_device_type dev_type,
 367                                 enum exynos_drm_output_type out_type);
 368
 369 void exynos_drm_component_del(struct device *dev,
 370                                 enum exynos_drm_device_type dev_type);
 371
 372 extern struct platform_driver fimd_driver;
 373 extern struct platform_driver dp_driver;
 374 extern struct platform_driver dsi_driver;
 375 extern struct platform_driver mixer_driver;
 376 extern struct platform_driver hdmi_driver;
 377 extern struct platform_driver exynos_drm_common_hdmi_driver;
 378 extern struct platform_driver vidi_driver;
 379 extern struct platform_driver g2d_driver;
 380 extern struct platform_driver fimc_driver;
 381 extern struct platform_driver rotator_driver;
 382 extern struct platform_driver gsc_driver;
 383 extern struct platform_driver ipp_driver;
 384 #endif