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