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 <drm/drmP.h>
  19 #include <linux/module.h>
  20
  21 #define MAX_CRTC        3
  22 #define MAX_PLANE       5
  23 #define MAX_FB_BUFFER   4
  24
  25 #define DEFAULT_WIN     0
  26
  27 #define to_exynos_crtc(x)       container_of(x, struct exynos_drm_crtc, base)
  28 #define to_exynos_plane(x)      container_of(x, struct exynos_drm_plane, base)
  29
  30 /* this enumerates display type. */
  31 enum exynos_drm_output_type {
  32         EXYNOS_DISPLAY_TYPE_NONE,
  33         /* RGB or CPU Interface. */
  34         EXYNOS_DISPLAY_TYPE_LCD,
  35         /* HDMI Interface. */
  36         EXYNOS_DISPLAY_TYPE_HDMI,
  37         /* Virtual Display Interface. */
  38         EXYNOS_DISPLAY_TYPE_VIDI,
  39 };
  40
  41 struct exynos_drm_rect {
  42         unsigned int x, y;
  43         unsigned int w, h;
  44 };
  45
  46 /*
  47  * Exynos drm plane state structure.
  48  *
  49  * @base: plane_state object (contains drm_framebuffer pointer)
  50  * @src: rectangle of the source image data to be displayed (clipped to
  51  *       visible part).
  52  * @crtc: rectangle of the target image position on hardware screen
  53  *       (clipped to visible part).
  54  * @h_ratio: horizontal scaling ratio, 16.16 fixed point
  55  * @v_ratio: vertical scaling ratio, 16.16 fixed point
  56  *
  57  * this structure consists plane state data that will be applied to hardware
  58  * specific overlay info.
  59  */
  60
  61 struct exynos_drm_plane_state {
  62         struct drm_plane_state base;
  63         struct exynos_drm_rect crtc;
  64         struct exynos_drm_rect src;
  65         unsigned int h_ratio;
  66         unsigned int v_ratio;
  67 };
  68
  69 static inline struct exynos_drm_plane_state *
  70 to_exynos_plane_state(struct drm_plane_state *state)
  71 {
  72         return container_of(state, struct exynos_drm_plane_state, base);
  73 }
  74
  75 /*
  76  * Exynos drm common overlay structure.
  77  *
  78  * @base: plane object
  79  * @index: hardware index of the overlay layer
  80  *
  81  * this structure is common to exynos SoC and its contents would be copied
  82  * to hardware specific overlay info.
  83  */
  84
  85 struct exynos_drm_plane {
  86         struct drm_plane base;
  87         const struct exynos_drm_plane_config *config;
  88         unsigned int index;
  89 };
  90
  91 #define EXYNOS_DRM_PLANE_CAP_DOUBLE     (1 << 0)
  92 #define EXYNOS_DRM_PLANE_CAP_SCALE      (1 << 1)
  93 #define EXYNOS_DRM_PLANE_CAP_ZPOS       (1 << 2)
  94 #define EXYNOS_DRM_PLANE_CAP_TILE       (1 << 3)
  95
  96 /*
  97  * Exynos DRM plane configuration structure.
  98  *
  99  * @zpos: initial z-position of the plane.
 100  * @type: type of the plane (primary, cursor or overlay).
 101  * @pixel_formats: supported pixel formats.
 102  * @num_pixel_formats: number of elements in 'pixel_formats'.
 103  * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*)
 104  */
 105
 106 struct exynos_drm_plane_config {
 107         unsigned int zpos;
 108         enum drm_plane_type type;
 109         const uint32_t *pixel_formats;
 110         unsigned int num_pixel_formats;
 111         unsigned int capabilities;
 112 };
 113
 114 /*
 115  * Exynos drm crtc ops
 116  *
 117  * @enable: enable the device
 118  * @disable: disable the device
 119  * @enable_vblank: specific driver callback for enabling vblank interrupt.
 120  * @disable_vblank: specific driver callback for disabling vblank interrupt.
 121  * @mode_valid: specific driver callback for mode validation
 122  * @atomic_check: validate state
 123  * @atomic_begin: prepare device to receive an update
 124  * @atomic_flush: mark the end of device update
 125  * @update_plane: apply hardware specific overlay data to registers.
 126  * @disable_plane: disable hardware specific overlay.
 127  * @te_handler: trigger to transfer video image at the tearing effect
 128  *      synchronization signal if there is a page flip request.
 129  */
 130 struct exynos_drm_crtc;
 131 struct exynos_drm_crtc_ops {
 132         void (*enable)(struct exynos_drm_crtc *crtc);
 133         void (*disable)(struct exynos_drm_crtc *crtc);
 134         int (*enable_vblank)(struct exynos_drm_crtc *crtc);
 135         void (*disable_vblank)(struct exynos_drm_crtc *crtc);
 136         u32 (*get_vblank_counter)(struct exynos_drm_crtc *crtc);
 137         enum drm_mode_status (*mode_valid)(struct exynos_drm_crtc *crtc,
 138                 const struct drm_display_mode *mode);
 139         int (*atomic_check)(struct exynos_drm_crtc *crtc,
 140                             struct drm_crtc_state *state);
 141         void (*atomic_begin)(struct exynos_drm_crtc *crtc);
 142         void (*update_plane)(struct exynos_drm_crtc *crtc,
 143                              struct exynos_drm_plane *plane);
 144         void (*disable_plane)(struct exynos_drm_crtc *crtc,
 145                               struct exynos_drm_plane *plane);
 146         void (*atomic_flush)(struct exynos_drm_crtc *crtc);
 147         void (*te_handler)(struct exynos_drm_crtc *crtc);
 148 };
 149
 150 struct exynos_drm_clk {
 151         void (*enable)(struct exynos_drm_clk *clk, bool enable);
 152 };
 153
 154 /*
 155  * Exynos specific crtc structure.
 156  *
 157  * @base: crtc object.
 158  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 159  * @ops: pointer to callbacks for exynos drm specific functionality
 160  * @ctx: A pointer to the crtc's implementation specific context
 161  * @pipe_clk: A pointer to the crtc's pipeline clock.
 162  */
 163 struct exynos_drm_crtc {
 164         struct drm_crtc                 base;
 165         enum exynos_drm_output_type     type;
 166         const struct exynos_drm_crtc_ops        *ops;
 167         void                            *ctx;
 168         struct exynos_drm_clk           *pipe_clk;
 169         bool                            i80_mode : 1;
 170 };
 171
 172 static inline void exynos_drm_pipe_clk_enable(struct exynos_drm_crtc *crtc,
 173                                               bool enable)
 174 {
 175         if (crtc->pipe_clk)
 176                 crtc->pipe_clk->enable(crtc->pipe_clk, enable);
 177 }
 178
 179 struct exynos_drm_g2d_private {
 180         struct device           *dev;
 181         struct list_head        inuse_cmdlist;
 182         struct list_head        event_list;
 183         struct list_head        userptr_list;
 184 };
 185
 186 struct drm_exynos_file_private {
 187         struct exynos_drm_g2d_private   *g2d_priv;
 188         struct device                   *ipp_dev;
 189 };
 190
 191 /*
 192  * Exynos drm private structure.
 193  *
 194  * @da_start: start address to device address space.
 195  *      with iommu, device address space starts from this address
 196  *      otherwise default one.
 197  * @da_space_size: size of device address space.
 198  *      if 0 then default value is used for it.
 199  * @pending: the crtcs that have pending updates to finish
 200  * @lock: protect access to @pending
 201  * @wait: wait an atomic commit to finish
 202  */
 203 struct exynos_drm_private {
 204         struct drm_fb_helper *fb_helper;
 205         struct drm_atomic_state *suspend_state;
 206
 207         struct device *dma_dev;
 208         void *mapping;
 209
 210         /* for atomic commit */
 211         u32                     pending;
 212         spinlock_t              lock;
 213         wait_queue_head_t       wait;
 214 };
 215
 216 static inline struct device *to_dma_dev(struct drm_device *dev)
 217 {
 218         struct exynos_drm_private *priv = dev->dev_private;
 219
 220         return priv->dma_dev;
 221 }
 222
 223 /*
 224  * Exynos drm sub driver structure.
 225  *
 226  * @list: sub driver has its own list object to register to exynos drm driver.
 227  * @dev: pointer to device object for subdrv device driver.
 228  * @drm_dev: pointer to drm_device and this pointer would be set
 229  *      when sub driver calls exynos_drm_subdrv_register().
 230  * @probe: this callback would be called by exynos drm driver after
 231  *     subdrv is registered to it.
 232  * @remove: this callback is used to release resources created
 233  *     by probe callback.
 234  * @open: this would be called with drm device file open.
 235  * @close: this would be called with drm device file close.
 236  */
 237 struct exynos_drm_subdrv {
 238         struct list_head list;
 239         struct device *dev;
 240         struct drm_device *drm_dev;
 241
 242         int (*probe)(struct drm_device *drm_dev, struct device *dev);
 243         void (*remove)(struct drm_device *drm_dev, struct device *dev);
 244         int (*open)(struct drm_device *drm_dev, struct device *dev,
 245                         struct drm_file *file);
 246         void (*close)(struct drm_device *drm_dev, struct device *dev,
 247                         struct drm_file *file);
 248 };
 249
 250  /* This function would be called by non kms drivers such as g2d and ipp. */
 251 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 252
 253 /* this function removes subdrv list from exynos drm driver */
 254 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 255
 256 int exynos_drm_device_subdrv_probe(struct drm_device *dev);
 257 int exynos_drm_device_subdrv_remove(struct drm_device *dev);
 258 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 259 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 260
 261 #ifdef CONFIG_DRM_EXYNOS_DPI
 262 struct drm_encoder *exynos_dpi_probe(struct device *dev);
 263 int exynos_dpi_remove(struct drm_encoder *encoder);
 264 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
 265 #else
 266 static inline struct drm_encoder *
 267 exynos_dpi_probe(struct device *dev) { return NULL; }
 268 static inline int exynos_dpi_remove(struct drm_encoder *encoder)
 269 {
 270         return 0;
 271 }
 272 static inline int exynos_dpi_bind(struct drm_device *dev,
 273                                   struct drm_encoder *encoder)
 274 {
 275         return 0;
 276 }
 277 #endif
 278
 279 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
 280                          bool nonblock);
 281 int exynos_atomic_check(struct drm_device *dev, struct drm_atomic_state *state);
 282
 283
 284 extern struct platform_driver fimd_driver;
 285 extern struct platform_driver exynos5433_decon_driver;
 286 extern struct platform_driver decon_driver;
 287 extern struct platform_driver dp_driver;
 288 extern struct platform_driver dsi_driver;
 289 extern struct platform_driver mixer_driver;
 290 extern struct platform_driver hdmi_driver;
 291 extern struct platform_driver vidi_driver;
 292 extern struct platform_driver g2d_driver;
 293 extern struct platform_driver fimc_driver;
 294 extern struct platform_driver rotator_driver;
 295 extern struct platform_driver gsc_driver;
 296 extern struct platform_driver ipp_driver;
 297 extern struct platform_driver mic_driver;
 298 #endif