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  * @enable: enable hardware specific overlay.
  63  * @disable: disable hardware specific overlay.
  64  */
  65 struct exynos_drm_overlay_ops {
  66         void (*mode_set)(struct device *subdrv_dev,
  67                          struct exynos_drm_overlay *overlay);
  68         void (*commit)(struct device *subdrv_dev, int zpos);
  69         void (*enable)(struct device *subdrv_dev, int zpos);
  70         void (*disable)(struct device *subdrv_dev, int zpos);
  71 };
  72
  73 /*
  74  * Exynos drm common overlay structure.
  75  *
  76  * @fb_x: offset x on a framebuffer to be displayed.
  77  *      - the unit is screen coordinates.
  78  * @fb_y: offset y on a framebuffer to be displayed.
  79  *      - the unit is screen coordinates.
  80  * @fb_width: width of a framebuffer.
  81  * @fb_height: height of a framebuffer.
  82  * @src_width: width of a partial image to be displayed from framebuffer.
  83  * @src_height: height of a partial image to be displayed from framebuffer.
  84  * @crtc_x: offset x on hardware screen.
  85  * @crtc_y: offset y on hardware screen.
  86  * @crtc_width: window width to be displayed (hardware screen).
  87  * @crtc_height: window height to be displayed (hardware screen).
  88  * @mode_width: width of screen mode.
  89  * @mode_height: height of screen mode.
  90  * @refresh: refresh rate.
  91  * @scan_flag: interlace or progressive way.
  92  *      (it could be DRM_MODE_FLAG_*)
  93  * @bpp: pixel size.(in bit)
  94  * @pixel_format: fourcc pixel format of this overlay
  95  * @dma_addr: array of bus(accessed by dma) address to the memory region
  96  *            allocated for a overlay.
  97  * @vaddr: array of virtual memory addresss to this overlay.
  98  * @zpos: order of overlay layer(z position).
  99  * @default_win: a window to be enabled.
 100  * @color_key: color key on or off.
 101  * @index_color: if using color key feature then this value would be used
 102  *                      as index color.
 103  * @local_path: in case of lcd type, local path mode on or off.
 104  * @transparency: transparency on or off.
 105  * @activated: activated or not.
 106  *
 107  * this structure is common to exynos SoC and its contents would be copied
 108  * to hardware specific overlay info.
 109  */
 110 struct exynos_drm_overlay {
 111         unsigned int fb_x;
 112         unsigned int fb_y;
 113         unsigned int fb_width;
 114         unsigned int fb_height;
 115         unsigned int src_width;
 116         unsigned int src_height;
 117         unsigned int crtc_x;
 118         unsigned int crtc_y;
 119         unsigned int crtc_width;
 120         unsigned int crtc_height;
 121         unsigned int mode_width;
 122         unsigned int mode_height;
 123         unsigned int refresh;
 124         unsigned int scan_flag;
 125         unsigned int bpp;
 126         unsigned int pitch;
 127         uint32_t pixel_format;
 128         dma_addr_t dma_addr[MAX_FB_BUFFER];
 129         void __iomem *vaddr[MAX_FB_BUFFER];
 130         int zpos;
 131
 132         bool default_win;
 133         bool color_key;
 134         unsigned int index_color;
 135         bool local_path;
 136         bool transparency;
 137         bool activated;
 138 };
 139
 140 /*
 141  * Exynos DRM Display Structure.
 142  *      - this structure is common to analog tv, digital tv and lcd panel.
 143  *
 144  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 145  * @is_connected: check for that display is connected or not.
 146  * @get_edid: get edid modes from display driver.
 147  * @get_panel: get panel object from display driver.
 148  * @check_timing: check if timing is valid or not.
 149  * @power_on: display device on or off.
 150  */
 151 struct exynos_drm_display_ops {
 152         enum exynos_drm_output_type type;
 153         bool (*is_connected)(struct device *dev);
 154         int (*get_edid)(struct device *dev, struct drm_connector *connector,
 155                                 u8 *edid, int len);
 156         void *(*get_panel)(struct device *dev);
 157         int (*check_timing)(struct device *dev, void *timing);
 158         int (*power_on)(struct device *dev, int mode);
 159 };
 160
 161 /*
 162  * Exynos drm manager ops
 163  *
 164  * @dpms: control device power.
 165  * @apply: set timing, vblank and overlay data to registers.
 166  * @mode_fixup: fix mode data comparing to hw specific display mode.
 167  * @mode_set: convert drm_display_mode to hw specific display mode and
 168  *            would be called by encoder->mode_set().
 169  * @get_max_resol: get maximum resolution to specific hardware.
 170  * @commit: set current hw specific display mode to hw.
 171  * @enable_vblank: specific driver callback for enabling vblank interrupt.
 172  * @disable_vblank: specific driver callback for disabling vblank interrupt.
 173  */
 174 struct exynos_drm_manager_ops {
 175         void (*dpms)(struct device *subdrv_dev, int mode);
 176         void (*apply)(struct device *subdrv_dev);
 177         void (*mode_fixup)(struct device *subdrv_dev,
 178                                 struct drm_connector *connector,
 179                                 const struct drm_display_mode *mode,
 180                                 struct drm_display_mode *adjusted_mode);
 181         void (*mode_set)(struct device *subdrv_dev, void *mode);
 182         void (*get_max_resol)(struct device *subdrv_dev, unsigned int *width,
 183                                 unsigned int *height);
 184         void (*commit)(struct device *subdrv_dev);
 185         int (*enable_vblank)(struct device *subdrv_dev);
 186         void (*disable_vblank)(struct device *subdrv_dev);
 187 };
 188
 189 /*
 190  * Exynos drm common manager structure.
 191  *
 192  * @dev: pointer to device object for subdrv device driver.
 193  *      sub drivers such as display controller or hdmi driver,
 194  *      have their own device object.
 195  * @ops: pointer to callbacks for exynos drm specific framebuffer.
 196  *      these callbacks should be set by specific drivers such fimd
 197  *      or hdmi driver and are used to control hardware global registers.
 198  * @overlay_ops: pointer to callbacks for exynos drm specific framebuffer.
 199  *      these callbacks should be set by specific drivers such fimd
 200  *      or hdmi driver and are used to control hardware overlay reigsters.
 201  * @display: pointer to callbacks for exynos drm specific framebuffer.
 202  *      these callbacks should be set by specific drivers such fimd
 203  *      or hdmi driver and are used to control display devices such as
 204  *      analog tv, digital tv and lcd panel and also get timing data for them.
 205  */
 206 struct exynos_drm_manager {
 207         struct device *dev;
 208         int pipe;
 209         struct exynos_drm_manager_ops *ops;
 210         struct exynos_drm_overlay_ops *overlay_ops;
 211         struct exynos_drm_display_ops *display_ops;
 212 };
 213
 214 struct exynos_drm_g2d_private {
 215         struct device           *dev;
 216         struct list_head        inuse_cmdlist;
 217         struct list_head        event_list;
 218         struct list_head        gem_list;
 219         unsigned int            gem_nr;
 220 };
 221
 222 struct drm_exynos_file_private {
 223         struct exynos_drm_g2d_private   *g2d_priv;
 224 };
 225
 226 /*
 227  * Exynos drm private structure.
 228  */
 229 struct exynos_drm_private {
 230         struct drm_fb_helper *fb_helper;
 231
 232         /* list head for new event to be added. */
 233         struct list_head pageflip_event_list;
 234
 235         /*
 236          * created crtc object would be contained at this array and
 237          * this array is used to be aware of which crtc did it request vblank.
 238          */
 239         struct drm_crtc *crtc[MAX_CRTC];
 240         struct drm_property *plane_zpos_property;
 241         struct drm_property *crtc_mode_property;
 242 };
 243
 244 /*
 245  * Exynos drm sub driver structure.
 246  *
 247  * @list: sub driver has its own list object to register to exynos drm driver.
 248  * @dev: pointer to device object for subdrv device driver.
 249  * @drm_dev: pointer to drm_device and this pointer would be set
 250  *      when sub driver calls exynos_drm_subdrv_register().
 251  * @manager: subdrv has its own manager to control a hardware appropriately
 252  *      and we can access a hardware drawing on this manager.
 253  * @probe: this callback would be called by exynos drm driver after
 254  *      subdrv is registered to it.
 255  * @remove: this callback is used to release resources created
 256  *      by probe callback.
 257  * @open: this would be called with drm device file open.
 258  * @close: this would be called with drm device file close.
 259  * @encoder: encoder object owned by this sub driver.
 260  * @connector: connector object owned by this sub driver.
 261  */
 262 struct exynos_drm_subdrv {
 263         struct list_head list;
 264         struct device *dev;
 265         struct drm_device *drm_dev;
 266         struct exynos_drm_manager *manager;
 267
 268         int (*probe)(struct drm_device *drm_dev, struct device *dev);
 269         void (*remove)(struct drm_device *dev);
 270         int (*open)(struct drm_device *drm_dev, struct device *dev,
 271                         struct drm_file *file);
 272         void (*close)(struct drm_device *drm_dev, struct device *dev,
 273                         struct drm_file *file);
 274
 275         struct drm_encoder *encoder;
 276         struct drm_connector *connector;
 277 };
 278
 279 /*
 280  * this function calls a probe callback registered to sub driver list and
 281  * create its own encoder and connector and then set drm_device object
 282  * to global one.
 283  */
 284 int exynos_drm_device_register(struct drm_device *dev);
 285 /*
 286  * this function calls a remove callback registered to sub driver list and
 287  * destroy its own encoder and connetor.
 288  */
 289 int exynos_drm_device_unregister(struct drm_device *dev);
 290
 291 /*
 292  * this function would be called by sub drivers such as display controller
 293  * or hdmi driver to register this sub driver object to exynos drm driver
 294  * and when a sub driver is registered to exynos drm driver a probe callback
 295  * of the sub driver is called and creates its own encoder and connector.
 296  */
 297 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 298
 299 /* this function removes subdrv list from exynos drm driver */
 300 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 301
 302 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 303 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 304
 305 extern struct platform_driver fimd_driver;
 306 extern struct platform_driver hdmi_driver;
 307 extern struct platform_driver mixer_driver;
 308 extern struct platform_driver exynos_drm_common_hdmi_driver;
 309 extern struct platform_driver vidi_driver;
 310 extern struct platform_driver g2d_driver;
 311 #endif