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