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 /*
  42  * Exynos drm common overlay structure.
  43  *
  44  * @base: plane object
  45  * @src_x: offset x on a framebuffer to be displayed.
  46  *      - the unit is screen coordinates.
  47  * @src_y: offset y on a framebuffer to be displayed.
  48  *      - the unit is screen coordinates.
  49  * @src_w: width of a partial image to be displayed from framebuffer.
  50  * @src_h: height of a partial image to be displayed from framebuffer.
  51  * @crtc_x: offset x on hardware screen.
  52  * @crtc_y: offset y on hardware screen.
  53  * @crtc_w: window width to be displayed (hardware screen).
  54  * @crtc_h: window height to be displayed (hardware screen).
  55  * @h_ratio: horizontal scaling ratio, 16.16 fixed point
  56  * @v_ratio: vertical scaling ratio, 16.16 fixed point
  57  * @dma_addr: array of bus(accessed by dma) address to the memory region
  58  *            allocated for a overlay.
  59  * @zpos: order of overlay layer(z position).
  60  *
  61  * this structure is common to exynos SoC and its contents would be copied
  62  * to hardware specific overlay info.
  63  */
  64
  65 struct exynos_drm_plane {
  66         struct drm_plane base;
  67         unsigned int src_x;
  68         unsigned int src_y;
  69         unsigned int src_w;
  70         unsigned int src_h;
  71         unsigned int crtc_x;
  72         unsigned int crtc_y;
  73         unsigned int crtc_w;
  74         unsigned int crtc_h;
  75         unsigned int h_ratio;
  76         unsigned int v_ratio;
  77         dma_addr_t dma_addr[MAX_FB_BUFFER];
  78         unsigned int zpos;
  79         struct drm_framebuffer *pending_fb;
  80 };
  81
  82 /*
  83  * Exynos drm crtc ops
  84  *
  85  * @enable: enable the device
  86  * @disable: disable the device
  87  * @commit: set current hw specific display mode to hw.
  88  * @enable_vblank: specific driver callback for enabling vblank interrupt.
  89  * @disable_vblank: specific driver callback for disabling vblank interrupt.
  90  * @wait_for_vblank: wait for vblank interrupt to make sure that
  91  *      hardware overlay is updated.
  92  * @atomic_check: validate state
  93  * @atomic_begin: prepare a window to receive a update
  94  * @atomic_flush: mark the end of a window update
  95  * @update_plane: apply hardware specific overlay data to registers.
  96  * @disable_plane: disable hardware specific overlay.
  97  * @te_handler: trigger to transfer video image at the tearing effect
  98  *      synchronization signal if there is a page flip request.
  99  * @clock_enable: optional function enabling/disabling display domain clock,
 100  *      called from exynos-dp driver before powering up (with
 101  *      'enable' argument as true) and after powering down (with
 102  *      'enable' as false).
 103  */
 104 struct exynos_drm_crtc;
 105 struct exynos_drm_crtc_ops {
 106         void (*enable)(struct exynos_drm_crtc *crtc);
 107         void (*disable)(struct exynos_drm_crtc *crtc);
 108         void (*commit)(struct exynos_drm_crtc *crtc);
 109         int (*enable_vblank)(struct exynos_drm_crtc *crtc);
 110         void (*disable_vblank)(struct exynos_drm_crtc *crtc);
 111         void (*wait_for_vblank)(struct exynos_drm_crtc *crtc);
 112         int (*atomic_check)(struct exynos_drm_crtc *crtc,
 113                             struct drm_crtc_state *state);
 114         void (*atomic_begin)(struct exynos_drm_crtc *crtc,
 115                               struct exynos_drm_plane *plane);
 116         void (*update_plane)(struct exynos_drm_crtc *crtc,
 117                              struct exynos_drm_plane *plane);
 118         void (*disable_plane)(struct exynos_drm_crtc *crtc,
 119                               struct exynos_drm_plane *plane);
 120         void (*atomic_flush)(struct exynos_drm_crtc *crtc,
 121                               struct exynos_drm_plane *plane);
 122         void (*te_handler)(struct exynos_drm_crtc *crtc);
 123         void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable);
 124 };
 125
 126 /*
 127  * Exynos specific crtc structure.
 128  *
 129  * @base: crtc object.
 130  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 131  * @pipe: a crtc index created at load() with a new crtc object creation
 132  *      and the crtc object would be set to private->crtc array
 133  *      to get a crtc object corresponding to this pipe from private->crtc
 134  *      array when irq interrupt occurred. the reason of using this pipe is that
 135  *      drm framework doesn't support multiple irq yet.
 136  *      we can refer to the crtc to current hardware interrupt occurred through
 137  *      this pipe value.
 138  * @enabled: if the crtc is enabled or not
 139  * @event: vblank event that is currently queued for flip
 140  * @wait_update: wait all pending planes updates to finish
 141  * @pending_update: number of pending plane updates in this crtc
 142  * @ops: pointer to callbacks for exynos drm specific functionality
 143  * @ctx: A pointer to the crtc's implementation specific context
 144  */
 145 struct exynos_drm_crtc {
 146         struct drm_crtc                 base;
 147         enum exynos_drm_output_type     type;
 148         unsigned int                    pipe;
 149         struct drm_pending_vblank_event *event;
 150         wait_queue_head_t               wait_update;
 151         atomic_t                        pending_update;
 152         const struct exynos_drm_crtc_ops        *ops;
 153         void                            *ctx;
 154 };
 155
 156 struct exynos_drm_g2d_private {
 157         struct device           *dev;
 158         struct list_head        inuse_cmdlist;
 159         struct list_head        event_list;
 160         struct list_head        userptr_list;
 161 };
 162
 163 struct drm_exynos_file_private {
 164         struct exynos_drm_g2d_private   *g2d_priv;
 165         struct device                   *ipp_dev;
 166 };
 167
 168 /*
 169  * Exynos drm private structure.
 170  *
 171  * @da_start: start address to device address space.
 172  *      with iommu, device address space starts from this address
 173  *      otherwise default one.
 174  * @da_space_size: size of device address space.
 175  *      if 0 then default value is used for it.
 176  * @pipe: the pipe number for this crtc/manager.
 177  * @pending: the crtcs that have pending updates to finish
 178  * @lock: protect access to @pending
 179  * @wait: wait an atomic commit to finish
 180  */
 181 struct exynos_drm_private {
 182         struct drm_fb_helper *fb_helper;
 183
 184         /*
 185          * created crtc object would be contained at this array and
 186          * this array is used to be aware of which crtc did it request vblank.
 187          */
 188         struct drm_crtc *crtc[MAX_CRTC];
 189         struct drm_property *plane_zpos_property;
 190
 191         unsigned long da_start;
 192         unsigned long da_space_size;
 193
 194         unsigned int pipe;
 195
 196         /* for atomic commit */
 197         u32                     pending;
 198         spinlock_t              lock;
 199         wait_queue_head_t       wait;
 200 };
 201
 202 /*
 203  * Exynos drm sub driver structure.
 204  *
 205  * @list: sub driver has its own list object to register to exynos drm driver.
 206  * @dev: pointer to device object for subdrv device driver.
 207  * @drm_dev: pointer to drm_device and this pointer would be set
 208  *      when sub driver calls exynos_drm_subdrv_register().
 209  * @probe: this callback would be called by exynos drm driver after
 210  *     subdrv is registered to it.
 211  * @remove: this callback is used to release resources created
 212  *     by probe callback.
 213  * @open: this would be called with drm device file open.
 214  * @close: this would be called with drm device file close.
 215  */
 216 struct exynos_drm_subdrv {
 217         struct list_head list;
 218         struct device *dev;
 219         struct drm_device *drm_dev;
 220
 221         int (*probe)(struct drm_device *drm_dev, struct device *dev);
 222         void (*remove)(struct drm_device *drm_dev, struct device *dev);
 223         int (*open)(struct drm_device *drm_dev, struct device *dev,
 224                         struct drm_file *file);
 225         void (*close)(struct drm_device *drm_dev, struct device *dev,
 226                         struct drm_file *file);
 227 };
 228
 229  /* This function would be called by non kms drivers such as g2d and ipp. */
 230 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 231
 232 /* this function removes subdrv list from exynos drm driver */
 233 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 234
 235 int exynos_drm_device_subdrv_probe(struct drm_device *dev);
 236 int exynos_drm_device_subdrv_remove(struct drm_device *dev);
 237 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 238 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 239
 240 #ifdef CONFIG_DRM_EXYNOS_DPI
 241 struct drm_encoder *exynos_dpi_probe(struct device *dev);
 242 int exynos_dpi_remove(struct drm_encoder *encoder);
 243 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
 244 #else
 245 static inline struct drm_encoder *
 246 exynos_dpi_probe(struct device *dev) { return NULL; }
 247 static inline int exynos_dpi_remove(struct drm_encoder *encoder)
 248 {
 249         return 0;
 250 }
 251 static inline int exynos_dpi_bind(struct drm_device *dev,
 252                                   struct drm_encoder *encoder)
 253 {
 254         return 0;
 255 }
 256 #endif
 257
 258 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
 259                          bool async);
 260
 261
 262 extern struct platform_driver fimd_driver;
 263 extern struct platform_driver exynos5433_decon_driver;
 264 extern struct platform_driver decon_driver;
 265 extern struct platform_driver dp_driver;
 266 extern struct platform_driver dsi_driver;
 267 extern struct platform_driver mixer_driver;
 268 extern struct platform_driver hdmi_driver;
 269 extern struct platform_driver exynos_drm_common_hdmi_driver;
 270 extern struct platform_driver vidi_driver;
 271 extern struct platform_driver g2d_driver;
 272 extern struct platform_driver fimc_driver;
 273 extern struct platform_driver rotator_driver;
 274 extern struct platform_driver gsc_driver;
 275 extern struct platform_driver ipp_driver;
 276 extern struct platform_driver mic_driver;
 277 #endif