1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* exynos_drm_drv.h 3 * 4 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 5 * Authors: 6 * Inki Dae <inki.dae@samsung.com> 7 * Joonyoung Shim <jy0922.shim@samsung.com> 8 * Seung-Woo Kim <sw0312.kim@samsung.com> 9 */ 10 11 #ifndef _EXYNOS_DRM_DRV_H_ 12 #define _EXYNOS_DRM_DRV_H_ 13 14 #include <linux/module.h> 15 16 #include <drm/drm_crtc.h> 17 #include <drm/drm_device.h> 18 #include <drm/drm_plane.h> 19 20 #define MAX_CRTC 3 21 #define MAX_PLANE 5 22 23 #define DEFAULT_WIN 0 24 25 struct drm_crtc_state; 26 struct drm_display_mode; 27 28 #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc, base) 29 #define to_exynos_plane(x) container_of(x, struct exynos_drm_plane, base) 30 31 /* this enumerates display type. */ 32 enum exynos_drm_output_type { 33 EXYNOS_DISPLAY_TYPE_NONE, 34 /* RGB or CPU Interface. */ 35 EXYNOS_DISPLAY_TYPE_LCD, 36 /* HDMI Interface. */ 37 EXYNOS_DISPLAY_TYPE_HDMI, 38 /* Virtual Display Interface. */ 39 EXYNOS_DISPLAY_TYPE_VIDI, 40 }; 41 42 struct exynos_drm_rect { 43 unsigned int x, y; 44 unsigned int w, h; 45 }; 46 47 /* 48 * Exynos drm plane state structure. 49 * 50 * @base: plane_state object (contains drm_framebuffer pointer) 51 * @src: rectangle of the source image data to be displayed (clipped to 52 * visible part). 53 * @crtc: rectangle of the target image position on hardware screen 54 * (clipped to visible part). 55 * @h_ratio: horizontal scaling ratio, 16.16 fixed point 56 * @v_ratio: vertical scaling ratio, 16.16 fixed point 57 * 58 * this structure consists plane state data that will be applied to hardware 59 * specific overlay info. 60 */ 61 62 struct exynos_drm_plane_state { 63 struct drm_plane_state base; 64 struct exynos_drm_rect crtc; 65 struct exynos_drm_rect src; 66 unsigned int h_ratio; 67 unsigned int v_ratio; 68 }; 69 70 static inline struct exynos_drm_plane_state * 71 to_exynos_plane_state(struct drm_plane_state *state) 72 { 73 return container_of(state, struct exynos_drm_plane_state, base); 74 } 75 76 /* 77 * Exynos drm common overlay structure. 78 * 79 * @base: plane object 80 * @index: hardware index of the overlay layer 81 * 82 * this structure is common to exynos SoC and its contents would be copied 83 * to hardware specific overlay info. 84 */ 85 86 struct exynos_drm_plane { 87 struct drm_plane base; 88 const struct exynos_drm_plane_config *config; 89 unsigned int index; 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 #define EXYNOS_DRM_PLANE_CAP_TILE (1 << 3) 96 #define EXYNOS_DRM_PLANE_CAP_PIX_BLEND (1 << 4) 97 #define EXYNOS_DRM_PLANE_CAP_WIN_BLEND (1 << 5) 98 99 /* 100 * Exynos DRM plane configuration structure. 101 * 102 * @zpos: initial z-position of the plane. 103 * @type: type of the plane (primary, cursor or overlay). 104 * @pixel_formats: supported pixel formats. 105 * @num_pixel_formats: number of elements in 'pixel_formats'. 106 * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*) 107 */ 108 109 struct exynos_drm_plane_config { 110 unsigned int zpos; 111 enum drm_plane_type type; 112 const uint32_t *pixel_formats; 113 unsigned int num_pixel_formats; 114 unsigned int capabilities; 115 }; 116 117 /* 118 * Exynos drm crtc ops 119 * 120 * @atomic_enable: enable the device 121 * @atomic_disable: disable the device 122 * @enable_vblank: specific driver callback for enabling vblank interrupt. 123 * @disable_vblank: specific driver callback for disabling vblank interrupt. 124 * @mode_valid: specific driver callback for mode validation 125 * @atomic_check: validate state 126 * @atomic_begin: prepare device to receive an update 127 * @atomic_flush: mark the end of device update 128 * @update_plane: apply hardware specific overlay data to registers. 129 * @disable_plane: disable hardware specific overlay. 130 * @te_handler: trigger to transfer video image at the tearing effect 131 * synchronization signal if there is a page flip request. 132 */ 133 struct exynos_drm_crtc; 134 struct exynos_drm_crtc_ops { 135 void (*atomic_enable)(struct exynos_drm_crtc *crtc); 136 void (*atomic_disable)(struct exynos_drm_crtc *crtc); 137 int (*enable_vblank)(struct exynos_drm_crtc *crtc); 138 void (*disable_vblank)(struct exynos_drm_crtc *crtc); 139 enum drm_mode_status (*mode_valid)(struct exynos_drm_crtc *crtc, 140 const struct drm_display_mode *mode); 141 bool (*mode_fixup)(struct exynos_drm_crtc *crtc, 142 const struct drm_display_mode *mode, 143 struct drm_display_mode *adjusted_mode); 144 int (*atomic_check)(struct exynos_drm_crtc *crtc, 145 struct drm_crtc_state *state); 146 void (*atomic_begin)(struct exynos_drm_crtc *crtc); 147 void (*update_plane)(struct exynos_drm_crtc *crtc, 148 struct exynos_drm_plane *plane); 149 void (*disable_plane)(struct exynos_drm_crtc *crtc, 150 struct exynos_drm_plane *plane); 151 void (*atomic_flush)(struct exynos_drm_crtc *crtc); 152 void (*te_handler)(struct exynos_drm_crtc *crtc); 153 }; 154 155 struct exynos_drm_clk { 156 void (*enable)(struct exynos_drm_clk *clk, bool enable); 157 }; 158 159 /* 160 * Exynos specific crtc structure. 161 * 162 * @base: crtc object. 163 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI. 164 * @ops: pointer to callbacks for exynos drm specific functionality 165 * @ctx: A pointer to the crtc's implementation specific context 166 * @pipe_clk: A pointer to the crtc's pipeline clock. 167 */ 168 struct exynos_drm_crtc { 169 struct drm_crtc base; 170 enum exynos_drm_output_type type; 171 const struct exynos_drm_crtc_ops *ops; 172 void *ctx; 173 struct exynos_drm_clk *pipe_clk; 174 bool i80_mode : 1; 175 }; 176 177 static inline void exynos_drm_pipe_clk_enable(struct exynos_drm_crtc *crtc, 178 bool enable) 179 { 180 if (crtc->pipe_clk) 181 crtc->pipe_clk->enable(crtc->pipe_clk, enable); 182 } 183 184 struct drm_exynos_file_private { 185 /* for g2d api */ 186 struct list_head inuse_cmdlist; 187 struct list_head event_list; 188 struct list_head userptr_list; 189 }; 190 191 /* 192 * Exynos drm private structure. 193 * 194 * @pending: the crtcs that have pending updates to finish 195 * @lock: protect access to @pending 196 * @wait: wait an atomic commit to finish 197 */ 198 struct exynos_drm_private { 199 struct device *g2d_dev; 200 struct device *vidi_dev; 201 void *mapping; 202 203 /* for atomic commit */ 204 u32 pending; 205 spinlock_t lock; 206 wait_queue_head_t wait; 207 }; 208 209 static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) 210 { 211 struct exynos_drm_private *priv = drm_dev->dev_private; 212 213 return priv->mapping ? true : false; 214 } 215 216 int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, 217 void **dma_priv); 218 void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev, 219 void **dma_priv); 220 void exynos_drm_cleanup_dma(struct drm_device *drm); 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 #ifdef CONFIG_DRM_EXYNOS_FIMC 241 int exynos_drm_check_fimc_device(struct device *dev); 242 #else 243 static inline int exynos_drm_check_fimc_device(struct device *dev) 244 { 245 return 0; 246 } 247 #endif 248 249 extern struct platform_driver fimd_driver; 250 extern struct platform_driver exynos5433_decon_driver; 251 extern struct platform_driver decon_driver; 252 extern struct platform_driver dp_driver; 253 extern struct platform_driver dsi_driver; 254 extern struct platform_driver mixer_driver; 255 extern struct platform_driver hdmi_driver; 256 extern struct platform_driver vidi_driver; 257 extern struct platform_driver g2d_driver; 258 extern struct platform_driver fimc_driver; 259 extern struct platform_driver rotator_driver; 260 extern struct platform_driver scaler_driver; 261 extern struct platform_driver gsc_driver; 262 extern struct platform_driver mic_driver; 263 #endif 264