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 }; 78 79 /* 80 * Exynos drm crtc ops 81 * 82 * @enable: enable the device 83 * @disable: disable the device 84 * @mode_fixup: fix mode data before applying it 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 * @update_plane: apply hardware specific overlay data to registers. 91 * @disable_plane: disable hardware specific overlay. 92 * @te_handler: trigger to transfer video image at the tearing effect 93 * synchronization signal if there is a page flip request. 94 * @clock_enable: optional function enabling/disabling display domain clock, 95 * called from exynos-dp driver before powering up (with 96 * 'enable' argument as true) and after powering down (with 97 * 'enable' as false). 98 */ 99 struct exynos_drm_crtc; 100 struct exynos_drm_crtc_ops { 101 void (*enable)(struct exynos_drm_crtc *crtc); 102 void (*disable)(struct exynos_drm_crtc *crtc); 103 bool (*mode_fixup)(struct exynos_drm_crtc *crtc, 104 const struct drm_display_mode *mode, 105 struct drm_display_mode *adjusted_mode); 106 void (*commit)(struct exynos_drm_crtc *crtc); 107 int (*enable_vblank)(struct exynos_drm_crtc *crtc); 108 void (*disable_vblank)(struct exynos_drm_crtc *crtc); 109 void (*wait_for_vblank)(struct exynos_drm_crtc *crtc); 110 void (*update_plane)(struct exynos_drm_crtc *crtc, 111 struct exynos_drm_plane *plane); 112 void (*disable_plane)(struct exynos_drm_crtc *crtc, 113 struct exynos_drm_plane *plane); 114 void (*te_handler)(struct exynos_drm_crtc *crtc); 115 void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable); 116 }; 117 118 /* 119 * Exynos specific crtc structure. 120 * 121 * @base: crtc object. 122 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI. 123 * @pipe: a crtc index created at load() with a new crtc object creation 124 * and the crtc object would be set to private->crtc array 125 * to get a crtc object corresponding to this pipe from private->crtc 126 * array when irq interrupt occurred. the reason of using this pipe is that 127 * drm framework doesn't support multiple irq yet. 128 * we can refer to the crtc to current hardware interrupt occurred through 129 * this pipe value. 130 * @enabled: if the crtc is enabled or not 131 * @event: vblank event that is currently queued for flip 132 * @ops: pointer to callbacks for exynos drm specific functionality 133 * @ctx: A pointer to the crtc's implementation specific context 134 */ 135 struct exynos_drm_crtc { 136 struct drm_crtc base; 137 enum exynos_drm_output_type type; 138 unsigned int pipe; 139 bool enabled; 140 wait_queue_head_t pending_flip_queue; 141 struct drm_pending_vblank_event *event; 142 const struct exynos_drm_crtc_ops *ops; 143 void *ctx; 144 }; 145 146 struct exynos_drm_g2d_private { 147 struct device *dev; 148 struct list_head inuse_cmdlist; 149 struct list_head event_list; 150 struct list_head userptr_list; 151 }; 152 153 struct drm_exynos_file_private { 154 struct exynos_drm_g2d_private *g2d_priv; 155 struct device *ipp_dev; 156 }; 157 158 /* 159 * Exynos drm private structure. 160 * 161 * @da_start: start address to device address space. 162 * with iommu, device address space starts from this address 163 * otherwise default one. 164 * @da_space_size: size of device address space. 165 * if 0 then default value is used for it. 166 * @pipe: the pipe number for this crtc/manager. 167 */ 168 struct exynos_drm_private { 169 struct drm_fb_helper *fb_helper; 170 171 /* 172 * created crtc object would be contained at this array and 173 * this array is used to be aware of which crtc did it request vblank. 174 */ 175 struct drm_crtc *crtc[MAX_CRTC]; 176 struct drm_property *plane_zpos_property; 177 178 unsigned long da_start; 179 unsigned long da_space_size; 180 181 unsigned int pipe; 182 }; 183 184 /* 185 * Exynos drm sub driver structure. 186 * 187 * @list: sub driver has its own list object to register to exynos drm driver. 188 * @dev: pointer to device object for subdrv device driver. 189 * @drm_dev: pointer to drm_device and this pointer would be set 190 * when sub driver calls exynos_drm_subdrv_register(). 191 * @probe: this callback would be called by exynos drm driver after 192 * subdrv is registered to it. 193 * @remove: this callback is used to release resources created 194 * by probe callback. 195 * @open: this would be called with drm device file open. 196 * @close: this would be called with drm device file close. 197 */ 198 struct exynos_drm_subdrv { 199 struct list_head list; 200 struct device *dev; 201 struct drm_device *drm_dev; 202 203 int (*probe)(struct drm_device *drm_dev, struct device *dev); 204 void (*remove)(struct drm_device *drm_dev, struct device *dev); 205 int (*open)(struct drm_device *drm_dev, struct device *dev, 206 struct drm_file *file); 207 void (*close)(struct drm_device *drm_dev, struct device *dev, 208 struct drm_file *file); 209 }; 210 211 /* This function would be called by non kms drivers such as g2d and ipp. */ 212 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv); 213 214 /* this function removes subdrv list from exynos drm driver */ 215 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv); 216 217 int exynos_drm_device_subdrv_probe(struct drm_device *dev); 218 int exynos_drm_device_subdrv_remove(struct drm_device *dev); 219 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file); 220 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file); 221 222 #ifdef CONFIG_DRM_EXYNOS_DPI 223 struct drm_encoder *exynos_dpi_probe(struct device *dev); 224 int exynos_dpi_remove(struct drm_encoder *encoder); 225 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder); 226 #else 227 static inline struct drm_encoder * 228 exynos_dpi_probe(struct device *dev) { return NULL; } 229 static inline int exynos_dpi_remove(struct drm_encoder *encoder) 230 { 231 return 0; 232 } 233 static inline int exynos_dpi_bind(struct drm_device *dev, 234 struct drm_encoder *encoder) 235 { 236 return 0; 237 } 238 #endif 239 240 241 extern struct platform_driver fimd_driver; 242 extern struct platform_driver exynos5433_decon_driver; 243 extern struct platform_driver decon_driver; 244 extern struct platform_driver dp_driver; 245 extern struct platform_driver dsi_driver; 246 extern struct platform_driver mixer_driver; 247 extern struct platform_driver hdmi_driver; 248 extern struct platform_driver exynos_drm_common_hdmi_driver; 249 extern struct platform_driver vidi_driver; 250 extern struct platform_driver g2d_driver; 251 extern struct platform_driver fimc_driver; 252 extern struct platform_driver rotator_driver; 253 extern struct platform_driver gsc_driver; 254 extern struct platform_driver ipp_driver; 255 extern struct platform_driver mic_driver; 256 #endif 257