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 to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc, base) 26 #define to_exynos_plane(x) container_of(x, struct exynos_drm_plane, base) 27 28 /* this enumerates display type. */ 29 enum exynos_drm_output_type { 30 EXYNOS_DISPLAY_TYPE_NONE, 31 /* RGB or CPU Interface. */ 32 EXYNOS_DISPLAY_TYPE_LCD, 33 /* HDMI Interface. */ 34 EXYNOS_DISPLAY_TYPE_HDMI, 35 /* Virtual Display Interface. */ 36 EXYNOS_DISPLAY_TYPE_VIDI, 37 }; 38 39 /* 40 * Exynos drm common overlay structure. 41 * 42 * @base: plane object 43 * @src_x: offset x on a framebuffer to be displayed. 44 * - the unit is screen coordinates. 45 * @src_y: offset y on a framebuffer to be displayed. 46 * - the unit is screen coordinates. 47 * @src_w: width of a partial image to be displayed from framebuffer. 48 * @src_h: height of a partial image to be displayed from framebuffer. 49 * @crtc_x: offset x on hardware screen. 50 * @crtc_y: offset y on hardware screen. 51 * @crtc_w: window width to be displayed (hardware screen). 52 * @crtc_h: window height to be displayed (hardware screen). 53 * @h_ratio: horizontal scaling ratio, 16.16 fixed point 54 * @v_ratio: vertical scaling ratio, 16.16 fixed point 55 * @dma_addr: array of bus(accessed by dma) address to the memory region 56 * allocated for a overlay. 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 dma_addr_t dma_addr[MAX_FB_BUFFER]; 76 unsigned int zpos; 77 struct drm_framebuffer *pending_fb; 78 }; 79 80 /* 81 * Exynos drm crtc ops 82 * 83 * @enable: enable the device 84 * @disable: disable the device 85 * @commit: set current hw specific display mode to hw. 86 * @enable_vblank: specific driver callback for enabling vblank interrupt. 87 * @disable_vblank: specific driver callback for disabling vblank interrupt. 88 * @wait_for_vblank: wait for vblank interrupt to make sure that 89 * hardware overlay is updated. 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 void (*atomic_begin)(struct exynos_drm_crtc *crtc, 110 struct exynos_drm_plane *plane); 111 void (*update_plane)(struct exynos_drm_crtc *crtc, 112 struct exynos_drm_plane *plane); 113 void (*disable_plane)(struct exynos_drm_crtc *crtc, 114 struct exynos_drm_plane *plane); 115 void (*atomic_flush)(struct exynos_drm_crtc *crtc, 116 struct exynos_drm_plane *plane); 117 void (*te_handler)(struct exynos_drm_crtc *crtc); 118 void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable); 119 }; 120 121 /* 122 * Exynos specific crtc structure. 123 * 124 * @base: crtc object. 125 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI. 126 * @pipe: a crtc index created at load() with a new crtc object creation 127 * and the crtc object would be set to private->crtc array 128 * to get a crtc object corresponding to this pipe from private->crtc 129 * array when irq interrupt occurred. the reason of using this pipe is that 130 * drm framework doesn't support multiple irq yet. 131 * we can refer to the crtc to current hardware interrupt occurred through 132 * this pipe value. 133 * @enabled: if the crtc is enabled or not 134 * @event: vblank event that is currently queued for flip 135 * @wait_update: wait all pending planes updates to finish 136 * @pending_update: number of pending plane updates in this crtc 137 * @ops: pointer to callbacks for exynos drm specific functionality 138 * @ctx: A pointer to the crtc's implementation specific context 139 */ 140 struct exynos_drm_crtc { 141 struct drm_crtc base; 142 enum exynos_drm_output_type type; 143 unsigned int pipe; 144 struct drm_pending_vblank_event *event; 145 wait_queue_head_t wait_update; 146 atomic_t pending_update; 147 const struct exynos_drm_crtc_ops *ops; 148 void *ctx; 149 }; 150 151 struct exynos_drm_g2d_private { 152 struct device *dev; 153 struct list_head inuse_cmdlist; 154 struct list_head event_list; 155 struct list_head userptr_list; 156 }; 157 158 struct drm_exynos_file_private { 159 struct exynos_drm_g2d_private *g2d_priv; 160 struct device *ipp_dev; 161 }; 162 163 /* 164 * Exynos drm private structure. 165 * 166 * @da_start: start address to device address space. 167 * with iommu, device address space starts from this address 168 * otherwise default one. 169 * @da_space_size: size of device address space. 170 * if 0 then default value is used for it. 171 * @pipe: the pipe number for this crtc/manager. 172 * @pending: the crtcs that have pending updates to finish 173 * @lock: protect access to @pending 174 * @wait: wait an atomic commit to finish 175 */ 176 struct exynos_drm_private { 177 struct drm_fb_helper *fb_helper; 178 179 /* 180 * created crtc object would be contained at this array and 181 * this array is used to be aware of which crtc did it request vblank. 182 */ 183 struct drm_crtc *crtc[MAX_CRTC]; 184 struct drm_property *plane_zpos_property; 185 186 unsigned long da_start; 187 unsigned long da_space_size; 188 189 unsigned int pipe; 190 191 /* for atomic commit */ 192 u32 pending; 193 spinlock_t lock; 194 wait_queue_head_t wait; 195 }; 196 197 /* 198 * Exynos drm sub driver structure. 199 * 200 * @list: sub driver has its own list object to register to exynos drm driver. 201 * @dev: pointer to device object for subdrv device driver. 202 * @drm_dev: pointer to drm_device and this pointer would be set 203 * when sub driver calls exynos_drm_subdrv_register(). 204 * @probe: this callback would be called by exynos drm driver after 205 * subdrv is registered to it. 206 * @remove: this callback is used to release resources created 207 * by probe callback. 208 * @open: this would be called with drm device file open. 209 * @close: this would be called with drm device file close. 210 */ 211 struct exynos_drm_subdrv { 212 struct list_head list; 213 struct device *dev; 214 struct drm_device *drm_dev; 215 216 int (*probe)(struct drm_device *drm_dev, struct device *dev); 217 void (*remove)(struct drm_device *drm_dev, struct device *dev); 218 int (*open)(struct drm_device *drm_dev, struct device *dev, 219 struct drm_file *file); 220 void (*close)(struct drm_device *drm_dev, struct device *dev, 221 struct drm_file *file); 222 }; 223 224 /* This function would be called by non kms drivers such as g2d and ipp. */ 225 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv); 226 227 /* this function removes subdrv list from exynos drm driver */ 228 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv); 229 230 int exynos_drm_device_subdrv_probe(struct drm_device *dev); 231 int exynos_drm_device_subdrv_remove(struct drm_device *dev); 232 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file); 233 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file); 234 235 #ifdef CONFIG_DRM_EXYNOS_DPI 236 struct drm_encoder *exynos_dpi_probe(struct device *dev); 237 int exynos_dpi_remove(struct drm_encoder *encoder); 238 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder); 239 #else 240 static inline struct drm_encoder * 241 exynos_dpi_probe(struct device *dev) { return NULL; } 242 static inline int exynos_dpi_remove(struct drm_encoder *encoder) 243 { 244 return 0; 245 } 246 static inline int exynos_dpi_bind(struct drm_device *dev, 247 struct drm_encoder *encoder) 248 { 249 return 0; 250 } 251 #endif 252 253 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state, 254 bool async); 255 256 257 extern struct platform_driver fimd_driver; 258 extern struct platform_driver exynos5433_decon_driver; 259 extern struct platform_driver decon_driver; 260 extern struct platform_driver dp_driver; 261 extern struct platform_driver dsi_driver; 262 extern struct platform_driver mixer_driver; 263 extern struct platform_driver hdmi_driver; 264 extern struct platform_driver exynos_drm_common_hdmi_driver; 265 extern struct platform_driver vidi_driver; 266 extern struct platform_driver g2d_driver; 267 extern struct platform_driver fimc_driver; 268 extern struct platform_driver rotator_driver; 269 extern struct platform_driver gsc_driver; 270 extern struct platform_driver ipp_driver; 271 extern struct platform_driver mic_driver; 272 #endif 273