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  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the next
  17  * paragraph) shall be included in all copies or substantial portions of the
  18  * Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  26  * OTHER DEALINGS IN THE SOFTWARE.
  27  */
  28
  29 #ifndef _EXYNOS_DRM_DRV_H_
  30 #define _EXYNOS_DRM_DRV_H_
  31
  32 #include <linux/module.h>
  33 #include "drm.h"
  34
  35 #define MAX_CRTC        3
  36 #define MAX_PLANE       5
  37 #define MAX_FB_BUFFER   4
  38 #define DEFAULT_ZPOS    -1
  39
  40 struct drm_device;
  41 struct exynos_drm_overlay;
  42 struct drm_connector;
  43
  44 extern unsigned int drm_vblank_offdelay;
  45
  46 /* this enumerates display type. */
  47 enum exynos_drm_output_type {
  48         EXYNOS_DISPLAY_TYPE_NONE,
  49         /* RGB or CPU Interface. */
  50         EXYNOS_DISPLAY_TYPE_LCD,
  51         /* HDMI Interface. */
  52         EXYNOS_DISPLAY_TYPE_HDMI,
  53         /* Virtual Display Interface. */
  54         EXYNOS_DISPLAY_TYPE_VIDI,
  55 };
  56
  57 /*
  58  * Exynos drm overlay ops structure.
  59  *
  60  * @mode_set: copy drm overlay info to hw specific overlay info.
  61  * @commit: apply hardware specific overlay data to registers.
  62  * @disable: disable hardware specific overlay.
  63  */
  64 struct exynos_drm_overlay_ops {
  65         void (*mode_set)(struct device *subdrv_dev,
  66                          struct exynos_drm_overlay *overlay);
  67         void (*commit)(struct device *subdrv_dev, int zpos);
  68         void (*disable)(struct device *subdrv_dev, int zpos);
  69 };
  70
  71 /*
  72  * Exynos drm common overlay structure.
  73  *
  74  * @fb_x: offset x on a framebuffer to be displayed.
  75  *      - the unit is screen coordinates.
  76  * @fb_y: offset y on a framebuffer to be displayed.
  77  *      - the unit is screen coordinates.
  78  * @fb_width: width of a framebuffer.
  79  * @fb_height: height of a framebuffer.
  80  * @src_width: width of a partial image to be displayed from framebuffer.
  81  * @src_height: height of a partial image to be displayed from framebuffer.
  82  * @crtc_x: offset x on hardware screen.
  83  * @crtc_y: offset y on hardware screen.
  84  * @crtc_width: window width to be displayed (hardware screen).
  85  * @crtc_height: window height to be displayed (hardware screen).
  86  * @mode_width: width of screen mode.
  87  * @mode_height: height of screen mode.
  88  * @refresh: refresh rate.
  89  * @scan_flag: interlace or progressive way.
  90  *      (it could be DRM_MODE_FLAG_*)
  91  * @bpp: pixel size.(in bit)
  92  * @pixel_format: fourcc pixel format of this overlay
  93  * @dma_addr: array of bus(accessed by dma) address to the memory region
  94  *            allocated for a overlay.
  95  * @vaddr: array of virtual memory addresss to this overlay.
  96  * @zpos: order of overlay layer(z position).
  97  * @default_win: a window to be enabled.
  98  * @color_key: color key on or off.
  99  * @index_color: if using color key feature then this value would be used
 100  *                      as index color.
 101  * @local_path: in case of lcd type, local path mode on or off.
 102  * @transparency: transparency on or off.
 103  * @activated: activated or not.
 104  *
 105  * this structure is common to exynos SoC and its contents would be copied
 106  * to hardware specific overlay info.
 107  */
 108 struct exynos_drm_overlay {
 109         unsigned int fb_x;
 110         unsigned int fb_y;
 111         unsigned int fb_width;
 112         unsigned int fb_height;
 113         unsigned int src_width;
 114         unsigned int src_height;
 115         unsigned int crtc_x;
 116         unsigned int crtc_y;
 117         unsigned int crtc_width;
 118         unsigned int crtc_height;
 119         unsigned int mode_width;
 120         unsigned int mode_height;
 121         unsigned int refresh;
 122         unsigned int scan_flag;
 123         unsigned int bpp;
 124         unsigned int pitch;
 125         uint32_t pixel_format;
 126         dma_addr_t dma_addr[MAX_FB_BUFFER];
 127         void __iomem *vaddr[MAX_FB_BUFFER];
 128         int zpos;
 129
 130         bool default_win;
 131         bool color_key;
 132         unsigned int index_color;
 133         bool local_path;
 134         bool transparency;
 135         bool activated;
 136 };
 137
 138 /*
 139  * Exynos DRM Display Structure.
 140  *      - this structure is common to analog tv, digital tv and lcd panel.
 141  *
 142  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 143  * @is_connected: check for that display is connected or not.
 144  * @get_edid: get edid modes from display driver.
 145  * @get_panel: get panel object from display driver.
 146  * @check_timing: check if timing is valid or not.
 147  * @power_on: display device on or off.
 148  */
 149 struct exynos_drm_display_ops {
 150         enum exynos_drm_output_type type;
 151         bool (*is_connected)(struct device *dev);
 152         int (*get_edid)(struct device *dev, struct drm_connector *connector,
 153                                 u8 *edid, int len);
 154         void *(*get_panel)(struct device *dev);
 155         int (*check_timing)(struct device *dev, void *timing);
 156         int (*power_on)(struct device *dev, int mode);
 157 };
 158
 159 /*
 160  * Exynos drm manager ops
 161  *
 162  * @dpms: control device power.
 163  * @apply: set timing, vblank and overlay data to registers.
 164  * @mode_fixup: fix mode data comparing to hw specific display mode.
 165  * @mode_set: convert drm_display_mode to hw specific display mode and
 166  *            would be called by encoder->mode_set().
 167  * @get_max_resol: get maximum resolution to specific hardware.
 168  * @commit: set current hw specific display mode to hw.
 169  * @enable_vblank: specific driver callback for enabling vblank interrupt.
 170  * @disable_vblank: specific driver callback for disabling vblank interrupt.
 171  */
 172 struct exynos_drm_manager_ops {
 173         void (*dpms)(struct device *subdrv_dev, int mode);
 174         void (*apply)(struct device *subdrv_dev);
 175         void (*mode_fixup)(struct device *subdrv_dev,
 176                                 struct drm_connector *connector,
 177                                 struct drm_display_mode *mode,
 178                                 struct drm_display_mode *adjusted_mode);
 179         void (*mode_set)(struct device *subdrv_dev, void *mode);
 180         void (*get_max_resol)(struct device *subdrv_dev, unsigned int *width,
 181                                 unsigned int *height);
 182         void (*commit)(struct device *subdrv_dev);
 183         int (*enable_vblank)(struct device *subdrv_dev);
 184         void (*disable_vblank)(struct device *subdrv_dev);
 185 };
 186
 187 /*
 188  * Exynos drm common manager structure.
 189  *
 190  * @dev: pointer to device object for subdrv device driver.
 191  *      sub drivers such as display controller or hdmi driver,
 192  *      have their own device object.
 193  * @ops: pointer to callbacks for exynos drm specific framebuffer.
 194  *      these callbacks should be set by specific drivers such fimd
 195  *      or hdmi driver and are used to control hardware global registers.
 196  * @overlay_ops: pointer to callbacks for exynos drm specific framebuffer.
 197  *      these callbacks should be set by specific drivers such fimd
 198  *      or hdmi driver and are used to control hardware overlay reigsters.
 199  * @display: pointer to callbacks for exynos drm specific framebuffer.
 200  *      these callbacks should be set by specific drivers such fimd
 201  *      or hdmi driver and are used to control display devices such as
 202  *      analog tv, digital tv and lcd panel and also get timing data for them.
 203  */
 204 struct exynos_drm_manager {
 205         struct device *dev;
 206         int pipe;
 207         struct exynos_drm_manager_ops *ops;
 208         struct exynos_drm_overlay_ops *overlay_ops;
 209         struct exynos_drm_display_ops *display_ops;
 210 };
 211
 212 struct exynos_drm_g2d_private {
 213         struct device           *dev;
 214         struct list_head        inuse_cmdlist;
 215         struct list_head        event_list;
 216         struct list_head        gem_list;
 217         unsigned int            gem_nr;
 218 };
 219
 220 struct drm_exynos_file_private {
 221         struct exynos_drm_g2d_private   *g2d_priv;
 222 };
 223
 224 /*
 225  * Exynos drm private structure.
 226  */
 227 struct exynos_drm_private {
 228         struct drm_fb_helper *fb_helper;
 229
 230         /* list head for new event to be added. */
 231         struct list_head pageflip_event_list;
 232
 233         /*
 234          * created crtc object would be contained at this array and
 235          * this array is used to be aware of which crtc did it request vblank.
 236          */
 237         struct drm_crtc *crtc[MAX_CRTC];
 238 };
 239
 240 /*
 241  * Exynos drm sub driver structure.
 242  *
 243  * @list: sub driver has its own list object to register to exynos drm driver.
 244  * @dev: pointer to device object for subdrv device driver.
 245  * @drm_dev: pointer to drm_device and this pointer would be set
 246  *      when sub driver calls exynos_drm_subdrv_register().
 247  * @manager: subdrv has its own manager to control a hardware appropriately
 248  *      and we can access a hardware drawing on this manager.
 249  * @probe: this callback would be called by exynos drm driver after
 250  *      subdrv is registered to it.
 251  * @remove: this callback is used to release resources created
 252  *      by probe callback.
 253  * @open: this would be called with drm device file open.
 254  * @close: this would be called with drm device file close.
 255  * @encoder: encoder object owned by this sub driver.
 256  * @connector: connector object owned by this sub driver.
 257  */
 258 struct exynos_drm_subdrv {
 259         struct list_head list;
 260         struct device *dev;
 261         struct drm_device *drm_dev;
 262         struct exynos_drm_manager *manager;
 263
 264         int (*probe)(struct drm_device *drm_dev, struct device *dev);
 265         void (*remove)(struct drm_device *dev);
 266         int (*open)(struct drm_device *drm_dev, struct device *dev,
 267                         struct drm_file *file);
 268         void (*close)(struct drm_device *drm_dev, struct device *dev,
 269                         struct drm_file *file);
 270
 271         struct drm_encoder *encoder;
 272         struct drm_connector *connector;
 273 };
 274
 275 /*
 276  * this function calls a probe callback registered to sub driver list and
 277  * create its own encoder and connector and then set drm_device object
 278  * to global one.
 279  */
 280 int exynos_drm_device_register(struct drm_device *dev);
 281 /*
 282  * this function calls a remove callback registered to sub driver list and
 283  * destroy its own encoder and connetor.
 284  */
 285 int exynos_drm_device_unregister(struct drm_device *dev);
 286
 287 /*
 288  * this function would be called by sub drivers such as display controller
 289  * or hdmi driver to register this sub driver object to exynos drm driver
 290  * and when a sub driver is registered to exynos drm driver a probe callback
 291  * of the sub driver is called and creates its own encoder and connector.
 292  */
 293 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 294
 295 /* this function removes subdrv list from exynos drm driver */
 296 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 297
 298 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 299 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 300
 301 extern struct platform_driver fimd_driver;
 302 extern struct platform_driver hdmi_driver;
 303 extern struct platform_driver mixer_driver;
 304 extern struct platform_driver exynos_drm_common_hdmi_driver;
 305 extern struct platform_driver vidi_driver;
 306 extern struct platform_driver g2d_driver;
 307 #endif