LXR linux/drivers/gpu/drm/exynos/exynos_drm

   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. */
  31enum 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
  41struct 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
  61struct 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
  69static inline struct exynos_drm_plane_state *
  70to_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
  85struct 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
 106struct 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 */
 130struct exynos_drm_crtc;
 131struct 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
 150struct 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 */
 163struct 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
 172static 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
 179struct 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
 186struct 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 */
 203struct 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
 216static 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 */
 237struct 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. */
 251int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 252
 253/* this function removes subdrv list from exynos drm driver */
 254int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 255
 256int exynos_drm_device_subdrv_probe(struct drm_device *dev);
 257int exynos_drm_device_subdrv_remove(struct drm_device *dev);
 258int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
 259void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
 260
 261#ifdef CONFIG_DRM_EXYNOS_DPI
 262struct drm_encoder *exynos_dpi_probe(struct device *dev);
 263int exynos_dpi_remove(struct drm_encoder *encoder);
 264int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
 265#else
 266static inline struct drm_encoder *
 267exynos_dpi_probe(struct device *dev) { return NULL; }
 268static inline int exynos_dpi_remove(struct drm_encoder *encoder)
 269{
 270        return 0;
 271}
 272static inline int exynos_dpi_bind(struct drm_device *dev,
 273                                  struct drm_encoder *encoder)
 274{
 275        return 0;
 276}
 277#endif
 278
 279int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
 280                         bool nonblock);
 281int exynos_atomic_check(struct drm_device *dev, struct drm_atomic_state *state);
 282
 283
 284extern struct platform_driver fimd_driver;
 285extern struct platform_driver exynos5433_decon_driver;
 286extern struct platform_driver decon_driver;
 287extern struct platform_driver dp_driver;
 288extern struct platform_driver dsi_driver;
 289extern struct platform_driver mixer_driver;
 290extern struct platform_driver hdmi_driver;
 291extern struct platform_driver vidi_driver;
 292extern struct platform_driver g2d_driver;
 293extern struct platform_driver fimc_driver;
 294extern struct platform_driver rotator_driver;
 295extern struct platform_driver gsc_driver;
 296extern struct platform_driver ipp_driver;
 297extern struct platform_driver mic_driver;
 298#endif
 299