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 * @mode_fixup: fix mode data before applying it 86 * @commit: set current hw specific display mode to hw. 87 * @enable_vblank: specific driver callback for enabling vblank interrupt. 88 * @disable_vblank: specific driver callback for disabling vblank interrupt. 89 * @wait_for_vblank: wait for vblank interrupt to make sure that 90 * hardware overlay is updated. 91 * @atomic_begin: prepare a window to receive a update 92 * @atomic_flush: mark the end of a window update 93 * @update_plane: apply hardware specific overlay data to registers. 94 * @disable_plane: disable hardware specific overlay. 95 * @te_handler: trigger to transfer video image at the tearing effect 96 * synchronization signal if there is a page flip request. 97 * @clock_enable: optional function enabling/disabling display domain clock, 98 * called from exynos-dp driver before powering up (with 99 * 'enable' argument as true) and after powering down (with 100 * 'enable' as false). 101 */ 102 struct exynos_drm_crtc; 103 struct exynos_drm_crtc_ops { 104 void (*enable)(struct exynos_drm_crtc *crtc); 105 void (*disable)(struct exynos_drm_crtc *crtc); 106 bool (*mode_fixup)(struct exynos_drm_crtc *crtc, 107 const struct drm_display_mode *mode, 108 struct drm_display_mode *adjusted_mode); 109 void (*commit)(struct exynos_drm_crtc *crtc); 110 int (*enable_vblank)(struct exynos_drm_crtc *crtc); 111 void (*disable_vblank)(struct exynos_drm_crtc *crtc); 112 void (*wait_for_vblank)(struct exynos_drm_crtc *crtc); 113 void (*atomic_begin)(struct exynos_drm_crtc *crtc, 114 struct exynos_drm_plane *plane); 115 void (*update_plane)(struct exynos_drm_crtc *crtc, 116 struct exynos_drm_plane *plane); 117 void (*disable_plane)(struct exynos_drm_crtc *crtc, 118 struct exynos_drm_plane *plane); 119 void (*atomic_flush)(struct exynos_drm_crtc *crtc, 120 struct exynos_drm_plane *plane); 121 void (*te_handler)(struct exynos_drm_crtc *crtc); 122 void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable); 123 }; 124 125 /* 126 * Exynos specific crtc structure. 127 * 128 * @base: crtc object. 129 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI. 130 * @pipe: a crtc index created at load() with a new crtc object creation 131 * and the crtc object would be set to private->crtc array 132 * to get a crtc object corresponding to this pipe from private->crtc 133 * array when irq interrupt occurred. the reason of using this pipe is that 134 * drm framework doesn't support multiple irq yet. 135 * we can refer to the crtc to current hardware interrupt occurred through 136 * this pipe value. 137 * @enabled: if the crtc is enabled or not 138 * @event: vblank event that is currently queued for flip 139 * @wait_update: wait all pending planes updates to finish 140 * @pending_update: number of pending plane updates in this crtc 141 * @ops: pointer to callbacks for exynos drm specific functionality 142 * @ctx: A pointer to the crtc's implementation specific context 143 */ 144 struct exynos_drm_crtc { 145 struct drm_crtc base; 146 enum exynos_drm_output_type type; 147 unsigned int pipe; 148 struct drm_pending_vblank_event *event; 149 wait_queue_head_t wait_update; 150 atomic_t pending_update; 151 const struct exynos_drm_crtc_ops *ops; 152 void *ctx; 153 }; 154 155 struct exynos_drm_g2d_private { 156 struct device *dev; 157 struct list_head inuse_cmdlist; 158 struct list_head event_list; 159 struct list_head userptr_list; 160 }; 161 162 struct drm_exynos_file_private { 163 struct exynos_drm_g2d_private *g2d_priv; 164 struct device *ipp_dev; 165 }; 166 167 /* 168 * Exynos drm private structure. 169 * 170 * @da_start: start address to device address space. 171 * with iommu, device address space starts from this address 172 * otherwise default one. 173 * @da_space_size: size of device address space. 174 * if 0 then default value is used for it. 175 * @pipe: the pipe number for this crtc/manager. 176 * @pending: the crtcs that have pending updates to finish 177 * @lock: protect access to @pending 178 * @wait: wait an atomic commit to finish 179 */ 180 struct exynos_drm_private { 181 struct drm_fb_helper *fb_helper; 182 183 /* 184 * created crtc object would be contained at this array and 185 * this array is used to be aware of which crtc did it request vblank. 186 */ 187 struct drm_crtc *crtc[MAX_CRTC]; 188 struct drm_property *plane_zpos_property; 189 190 unsigned long da_start; 191 unsigned long da_space_size; 192 193 unsigned int pipe; 194 195 /* for atomic commit */ 196 u32 pending; 197 spinlock_t lock; 198 wait_queue_head_t wait; 199 }; 200 201 /* 202 * Exynos drm sub driver structure. 203 * 204 * @list: sub driver has its own list object to register to exynos drm driver. 205 * @dev: pointer to device object for subdrv device driver. 206 * @drm_dev: pointer to drm_device and this pointer would be set 207 * when sub driver calls exynos_drm_subdrv_register(). 208 * @probe: this callback would be called by exynos drm driver after 209 * subdrv is registered to it. 210 * @remove: this callback is used to release resources created 211 * by probe callback. 212 * @open: this would be called with drm device file open. 213 * @close: this would be called with drm device file close. 214 */ 215 struct exynos_drm_subdrv { 216 struct list_head list; 217 struct device *dev; 218 struct drm_device *drm_dev; 219 220 int (*probe)(struct drm_device *drm_dev, struct device *dev); 221 void (*remove)(struct drm_device *drm_dev, struct device *dev); 222 int (*open)(struct drm_device *drm_dev, struct device *dev, 223 struct drm_file *file); 224 void (*close)(struct drm_device *drm_dev, struct device *dev, 225 struct drm_file *file); 226 }; 227 228 /* This function would be called by non kms drivers such as g2d and ipp. */ 229 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv); 230 231 /* this function removes subdrv list from exynos drm driver */ 232 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv); 233 234 int exynos_drm_device_subdrv_probe(struct drm_device *dev); 235 int exynos_drm_device_subdrv_remove(struct drm_device *dev); 236 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file); 237 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file); 238 239 #ifdef CONFIG_DRM_EXYNOS_DPI 240 struct drm_encoder *exynos_dpi_probe(struct device *dev); 241 int exynos_dpi_remove(struct drm_encoder *encoder); 242 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder); 243 #else 244 static inline struct drm_encoder * 245 exynos_dpi_probe(struct device *dev) { return NULL; } 246 static inline int exynos_dpi_remove(struct drm_encoder *encoder) 247 { 248 return 0; 249 } 250 static inline int exynos_dpi_bind(struct drm_device *dev, 251 struct drm_encoder *encoder) 252 { 253 return 0; 254 } 255 #endif 256 257 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state, 258 bool async); 259 260 261 extern struct platform_driver fimd_driver; 262 extern struct platform_driver exynos5433_decon_driver; 263 extern struct platform_driver decon_driver; 264 extern struct platform_driver dp_driver; 265 extern struct platform_driver dsi_driver; 266 extern struct platform_driver mixer_driver; 267 extern struct platform_driver hdmi_driver; 268 extern struct platform_driver exynos_drm_common_hdmi_driver; 269 extern struct platform_driver vidi_driver; 270 extern struct platform_driver g2d_driver; 271 extern struct platform_driver fimc_driver; 272 extern struct platform_driver rotator_driver; 273 extern struct platform_driver gsc_driver; 274 extern struct platform_driver ipp_driver; 275 extern struct platform_driver mic_driver; 276 #endif 277