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
  95 /*
  96  * Exynos DRM plane configuration structure.
  97  *
  98  * @zpos: initial z-position of the plane.
  99  * @type: type of the plane (primary, cursor or overlay).
 100  * @pixel_formats: supported pixel formats.
 101  * @num_pixel_formats: number of elements in 'pixel_formats'.
 102  * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*)
 103  */
 104
 105 struct exynos_drm_plane_config {
 106         unsigned int zpos;
 107         enum drm_plane_type type;
 108         const uint32_t *pixel_formats;
 109         unsigned int num_pixel_formats;
 110         unsigned int capabilities;
 111 };
 112
 113 /*
 114  * Exynos drm crtc ops
 115  *
 116  * @enable: enable the device
 117  * @disable: disable the device
 118  * @commit: set current hw specific display mode to hw.
 119  * @enable_vblank: specific driver callback for enabling vblank interrupt.
 120  * @disable_vblank: specific driver callback for disabling vblank interrupt.
 121  * @atomic_check: validate state
 122  * @atomic_begin: prepare device to receive an update
 123  * @atomic_flush: mark the end of device update
 124  * @update_plane: apply hardware specific overlay data to registers.
 125  * @disable_plane: disable hardware specific overlay.
 126  * @te_handler: trigger to transfer video image at the tearing effect
 127  *      synchronization signal if there is a page flip request.
 128  */
 129 struct exynos_drm_crtc;
 130 struct exynos_drm_crtc_ops {
 131         void (*enable)(struct exynos_drm_crtc *crtc);
 132         void (*disable)(struct exynos_drm_crtc *crtc);
 133         void (*commit)(struct exynos_drm_crtc *crtc);
 134         int (*enable_vblank)(struct exynos_drm_crtc *crtc);
 135         void (*disable_vblank)(struct exynos_drm_crtc *crtc);
 136         int (*atomic_check)(struct exynos_drm_crtc *crtc,
 137                             struct drm_crtc_state *state);
 138         void (*atomic_begin)(struct exynos_drm_crtc *crtc);
 139         void (*update_plane)(struct exynos_drm_crtc *crtc,
 140                              struct exynos_drm_plane *plane);
 141         void (*disable_plane)(struct exynos_drm_crtc *crtc,
 142                               struct exynos_drm_plane *plane);
 143         void (*atomic_flush)(struct exynos_drm_crtc *crtc);
 144         void (*te_handler)(struct exynos_drm_crtc *crtc);
 145 };
 146
 147 struct exynos_drm_clk {
 148         void (*enable)(struct exynos_drm_clk *clk, bool enable);
 149 };
 150
 151 /*
 152  * Exynos specific crtc structure.
 153  *
 154  * @base: crtc object.
 155  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 156  * @pipe: a crtc index created at load() with a new crtc object creation
 157  *      and the crtc object would be set to private->crtc array
 158  *      to get a crtc object corresponding to this pipe from private->crtc
 159  *      array when irq interrupt occurred. the reason of using this pipe is that
 160  *      drm framework doesn't support multiple irq yet.
 161  *      we can refer to the crtc to current hardware interrupt occurred through
 162  *      this pipe value.
 163  * @enabled: if the crtc is enabled or not
 164  * @event: vblank event that is currently queued for flip
 165  * @wait_update: wait all pending planes updates to finish
 166  * @pending_update: number of pending plane updates in this crtc
 167  * @ops: pointer to callbacks for exynos drm specific functionality
 168  * @ctx: A pointer to the crtc's implementation specific context
 169  */
 170 struct exynos_drm_crtc {
 171         struct drm_crtc                 base;
 172         enum exynos_drm_output_type     type;
 173         unsigned int                    pipe;
 174         const struct exynos_drm_crtc_ops        *ops;
 175         void                            *ctx;
 176         struct exynos_drm_clk           *pipe_clk;
 177 };
 178
 179 static inline void exynos_drm_pipe_clk_enable(struct exynos_drm_crtc *crtc,
 180                                               bool enable)
 181 {
 182         if (crtc->pipe_clk)
 183                 crtc->pipe_clk->enable(crtc->pipe_clk, enable);
 184 }
 185
 186 struct exynos_drm_g2d_private {
 187         struct device           *dev;
 188         struct list_head        inuse_cmdlist;
 189         struct list_head        event_list;
 190         struct list_head        userptr_list;
 191 };
 192
 193 struct drm_exynos_file_private {
 194         struct exynos_drm_g2d_private   *g2d_priv;
 195         struct device                   *ipp_dev;
 196 };
 197
 198 /*
 199  * Exynos drm private structure.
 200  *
 201  * @da_start: start address to device address space.
 202  *      with iommu, device address space starts from this address
 203  *      otherwise default one.
 204  * @da_space_size: size of device address space.
 205  *      if 0 then default value is used for it.
 206  * @pipe: the pipe number for this crtc/manager.
 207  * @pending: the crtcs that have pending updates to finish
 208  * @lock: protect access to @pending
 209  * @wait: wait an atomic commit to finish
 210  */
 211 struct exynos_drm_private {
 212         struct drm_fb_helper *fb_helper;
 213
 214         /*
 215          * created crtc object would be contained at this array and
 216          * this array is used to be aware of which crtc did it request vblank.
 217          */
 218         struct drm_crtc *crtc[MAX_CRTC];
 219
 220         struct device *dma_dev;
 221         void *mapping;
 222
 223         unsigned int pipe;
 224
 225         /* for atomic commit */
 226         u32                     pending;
 227         spinlock_t              lock;
 228         wait_queue_head_t       wait;
 229 };
 230
 231 static inline struct exynos_drm_crtc *
 232 exynos_drm_crtc_from_pipe(struct drm_device *dev, int pipe)
 233 {
 234         struct exynos_drm_private *private = dev->dev_private;
 235
 236         return to_exynos_crtc(private->crtc[pipe]);
 237 }
 238
 239 static inline struct device *to_dma_dev(struct drm_device *dev)
 240 {
 241         struct exynos_drm_private *priv = dev->dev_private;
 242
 243         return priv->dma_dev;
 244 }
 245
 246 /*
 247  * Exynos drm sub driver structure.
 248  *
 249  * @list: sub driver has its own list object to register to exynos drm driver.
 250  * @dev: pointer to device object for subdrv device driver.
 251  * @drm_dev: pointer to drm_device and this pointer would be set
 252  *      when sub driver calls exynos_drm_subdrv_register().
 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  */
 260 struct exynos_drm_subdrv {
 261         struct list_head list;
 262         struct device *dev;
 263         struct drm_device *drm_dev;
 264
 265         int (*probe)(struct drm_device *drm_dev, struct device *dev);
 266         void (*remove)(struct drm_device *drm_dev, struct device *dev);
 267         int (*open)(struct drm_device *drm_dev, struct device *dev,
 268                         struct drm_file *file);
 269         void (*close)(struct drm_device *drm_dev, struct device *dev,
 270                         struct drm_file *file);
 271 };
 272
 273  /* This function would be called by non kms drivers such as g2d and ipp. */
 274 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 275
 276 /* this function removes subdrv list from exynos drm driver */
 277 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 278
 279 int exynos_drm_device_subdrv_probe(struct drm_device *dev);
 280 int exynos_drm_device_subdrv_remove(struct drm_device *dev);
 281 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 282 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 283
 284 #ifdef CONFIG_DRM_EXYNOS_DPI
 285 struct drm_encoder *exynos_dpi_probe(struct device *dev);
 286 int exynos_dpi_remove(struct drm_encoder *encoder);
 287 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
 288 #else
 289 static inline struct drm_encoder *
 290 exynos_dpi_probe(struct device *dev) { return NULL; }
 291 static inline int exynos_dpi_remove(struct drm_encoder *encoder)
 292 {
 293         return 0;
 294 }
 295 static inline int exynos_dpi_bind(struct drm_device *dev,
 296                                   struct drm_encoder *encoder)
 297 {
 298         return 0;
 299 }
 300 #endif
 301
 302 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
 303                          bool nonblock);
 304
 305
 306 extern struct platform_driver fimd_driver;
 307 extern struct platform_driver exynos5433_decon_driver;
 308 extern struct platform_driver decon_driver;
 309 extern struct platform_driver dp_driver;
 310 extern struct platform_driver dsi_driver;
 311 extern struct platform_driver mixer_driver;
 312 extern struct platform_driver hdmi_driver;
 313 extern struct platform_driver vidi_driver;
 314 extern struct platform_driver g2d_driver;
 315 extern struct platform_driver fimc_driver;
 316 extern struct platform_driver rotator_driver;
 317 extern struct platform_driver gsc_driver;
 318 extern struct platform_driver ipp_driver;
 319 extern struct platform_driver mic_driver;
 320 #endif