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 unsigned int zpos; 68 }; 69 70 static inline struct exynos_drm_plane_state * 71 to_exynos_plane_state(struct drm_plane_state *state) 72 { 73 return container_of(state, struct exynos_drm_plane_state, base); 74 } 75 76 /* 77 * Exynos drm common overlay structure. 78 * 79 * @base: plane object 80 * @index: hardware index of the overlay layer 81 * 82 * this structure is common to exynos SoC and its contents would be copied 83 * to hardware specific overlay info. 84 */ 85 86 struct exynos_drm_plane { 87 struct drm_plane base; 88 const struct exynos_drm_plane_config *config; 89 unsigned int index; 90 struct drm_framebuffer *pending_fb; 91 }; 92 93 #define EXYNOS_DRM_PLANE_CAP_DOUBLE (1 << 0) 94 #define EXYNOS_DRM_PLANE_CAP_SCALE (1 << 1) 95 #define EXYNOS_DRM_PLANE_CAP_ZPOS (1 << 2) 96 97 /* 98 * Exynos DRM plane configuration structure. 99 * 100 * @zpos: initial z-position of the plane. 101 * @type: type of the plane (primary, cursor or overlay). 102 * @pixel_formats: supported pixel formats. 103 * @num_pixel_formats: number of elements in 'pixel_formats'. 104 * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*) 105 */ 106 107 struct exynos_drm_plane_config { 108 unsigned int zpos; 109 enum drm_plane_type type; 110 const uint32_t *pixel_formats; 111 unsigned int num_pixel_formats; 112 unsigned int capabilities; 113 }; 114 115 /* 116 * Exynos drm crtc ops 117 * 118 * @enable: enable the device 119 * @disable: disable the device 120 * @commit: set current hw specific display mode to hw. 121 * @enable_vblank: specific driver callback for enabling vblank interrupt. 122 * @disable_vblank: specific driver callback for disabling vblank interrupt. 123 * @atomic_check: validate state 124 * @atomic_begin: prepare device to receive an update 125 * @atomic_flush: mark the end of device update 126 * @update_plane: apply hardware specific overlay data to registers. 127 * @disable_plane: disable hardware specific overlay. 128 * @te_handler: trigger to transfer video image at the tearing effect 129 * synchronization signal if there is a page flip request. 130 */ 131 struct exynos_drm_crtc; 132 struct exynos_drm_crtc_ops { 133 void (*enable)(struct exynos_drm_crtc *crtc); 134 void (*disable)(struct exynos_drm_crtc *crtc); 135 void (*commit)(struct exynos_drm_crtc *crtc); 136 int (*enable_vblank)(struct exynos_drm_crtc *crtc); 137 void (*disable_vblank)(struct exynos_drm_crtc *crtc); 138 int (*atomic_check)(struct exynos_drm_crtc *crtc, 139 struct drm_crtc_state *state); 140 void (*atomic_begin)(struct exynos_drm_crtc *crtc); 141 void (*update_plane)(struct exynos_drm_crtc *crtc, 142 struct exynos_drm_plane *plane); 143 void (*disable_plane)(struct exynos_drm_crtc *crtc, 144 struct exynos_drm_plane *plane); 145 void (*atomic_flush)(struct exynos_drm_crtc *crtc); 146 void (*te_handler)(struct exynos_drm_crtc *crtc); 147 }; 148 149 struct exynos_drm_clk { 150 void (*enable)(struct exynos_drm_clk *clk, bool enable); 151 }; 152 153 /* 154 * Exynos specific crtc structure. 155 * 156 * @base: crtc object. 157 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI. 158 * @pipe: a crtc index created at load() with a new crtc object creation 159 * and the crtc object would be set to private->crtc array 160 * to get a crtc object corresponding to this pipe from private->crtc 161 * array when irq interrupt occurred. the reason of using this pipe is that 162 * drm framework doesn't support multiple irq yet. 163 * we can refer to the crtc to current hardware interrupt occurred through 164 * this pipe value. 165 * @enabled: if the crtc is enabled or not 166 * @event: vblank event that is currently queued for flip 167 * @wait_update: wait all pending planes updates to finish 168 * @pending_update: number of pending plane updates in this crtc 169 * @ops: pointer to callbacks for exynos drm specific functionality 170 * @ctx: A pointer to the crtc's implementation specific context 171 */ 172 struct exynos_drm_crtc { 173 struct drm_crtc base; 174 enum exynos_drm_output_type type; 175 unsigned int pipe; 176 struct drm_pending_vblank_event *event; 177 wait_queue_head_t wait_update; 178 atomic_t pending_update; 179 const struct exynos_drm_crtc_ops *ops; 180 void *ctx; 181 struct exynos_drm_clk *pipe_clk; 182 }; 183 184 static inline void exynos_drm_pipe_clk_enable(struct exynos_drm_crtc *crtc, 185 bool enable) 186 { 187 if (crtc->pipe_clk) 188 crtc->pipe_clk->enable(crtc->pipe_clk, enable); 189 } 190 191 struct exynos_drm_g2d_private { 192 struct device *dev; 193 struct list_head inuse_cmdlist; 194 struct list_head event_list; 195 struct list_head userptr_list; 196 }; 197 198 struct drm_exynos_file_private { 199 struct exynos_drm_g2d_private *g2d_priv; 200 struct device *ipp_dev; 201 }; 202 203 /* 204 * Exynos drm private structure. 205 * 206 * @da_start: start address to device address space. 207 * with iommu, device address space starts from this address 208 * otherwise default one. 209 * @da_space_size: size of device address space. 210 * if 0 then default value is used for it. 211 * @pipe: the pipe number for this crtc/manager. 212 * @pending: the crtcs that have pending updates to finish 213 * @lock: protect access to @pending 214 * @wait: wait an atomic commit to finish 215 */ 216 struct exynos_drm_private { 217 struct drm_fb_helper *fb_helper; 218 219 /* 220 * created crtc object would be contained at this array and 221 * this array is used to be aware of which crtc did it request vblank. 222 */ 223 struct drm_crtc *crtc[MAX_CRTC]; 224 struct drm_property *plane_zpos_property; 225 226 struct device *dma_dev; 227 unsigned long da_start; 228 unsigned long da_space_size; 229 void *mapping; 230 231 unsigned int pipe; 232 233 /* for atomic commit */ 234 u32 pending; 235 spinlock_t lock; 236 wait_queue_head_t wait; 237 }; 238 239 static inline struct exynos_drm_crtc * 240 exynos_drm_crtc_from_pipe(struct drm_device *dev, int pipe) 241 { 242 struct exynos_drm_private *private = dev->dev_private; 243 244 return to_exynos_crtc(private->crtc[pipe]); 245 } 246 247 static inline struct device *to_dma_dev(struct drm_device *dev) 248 { 249 struct exynos_drm_private *priv = dev->dev_private; 250 251 return priv->dma_dev; 252 } 253 254 /* 255 * Exynos drm sub driver structure. 256 * 257 * @list: sub driver has its own list object to register to exynos drm driver. 258 * @dev: pointer to device object for subdrv device driver. 259 * @drm_dev: pointer to drm_device and this pointer would be set 260 * when sub driver calls exynos_drm_subdrv_register(). 261 * @probe: this callback would be called by exynos drm driver after 262 * subdrv is registered to it. 263 * @remove: this callback is used to release resources created 264 * by probe callback. 265 * @open: this would be called with drm device file open. 266 * @close: this would be called with drm device file close. 267 */ 268 struct exynos_drm_subdrv { 269 struct list_head list; 270 struct device *dev; 271 struct drm_device *drm_dev; 272 273 int (*probe)(struct drm_device *drm_dev, struct device *dev); 274 void (*remove)(struct drm_device *drm_dev, struct device *dev); 275 int (*open)(struct drm_device *drm_dev, struct device *dev, 276 struct drm_file *file); 277 void (*close)(struct drm_device *drm_dev, struct device *dev, 278 struct drm_file *file); 279 }; 280 281 /* This function would be called by non kms drivers such as g2d and ipp. */ 282 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv); 283 284 /* this function removes subdrv list from exynos drm driver */ 285 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv); 286 287 int exynos_drm_device_subdrv_probe(struct drm_device *dev); 288 int exynos_drm_device_subdrv_remove(struct drm_device *dev); 289 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file); 290 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file); 291 292 #ifdef CONFIG_DRM_EXYNOS_DPI 293 struct drm_encoder *exynos_dpi_probe(struct device *dev); 294 int exynos_dpi_remove(struct drm_encoder *encoder); 295 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder); 296 #else 297 static inline struct drm_encoder * 298 exynos_dpi_probe(struct device *dev) { return NULL; } 299 static inline int exynos_dpi_remove(struct drm_encoder *encoder) 300 { 301 return 0; 302 } 303 static inline int exynos_dpi_bind(struct drm_device *dev, 304 struct drm_encoder *encoder) 305 { 306 return 0; 307 } 308 #endif 309 310 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state, 311 bool nonblock); 312 313 314 extern struct platform_driver fimd_driver; 315 extern struct platform_driver exynos5433_decon_driver; 316 extern struct platform_driver decon_driver; 317 extern struct platform_driver dp_driver; 318 extern struct platform_driver dsi_driver; 319 extern struct platform_driver mixer_driver; 320 extern struct platform_driver hdmi_driver; 321 extern struct platform_driver vidi_driver; 322 extern struct platform_driver g2d_driver; 323 extern struct platform_driver fimc_driver; 324 extern struct platform_driver rotator_driver; 325 extern struct platform_driver gsc_driver; 326 extern struct platform_driver ipp_driver; 327 extern struct platform_driver mic_driver; 328 #endif 329