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 278