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 #define MAX_FB_BUFFER 4 23 24 #define DEFAULT_WIN 0 25 26 struct drm_crtc_state; 27 struct drm_display_mode; 28 29 #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc, base) 30 #define to_exynos_plane(x) container_of(x, struct exynos_drm_plane, base) 31 32 /* this enumerates display type. */ 33 enum exynos_drm_output_type { 34 EXYNOS_DISPLAY_TYPE_NONE, 35 /* RGB or CPU Interface. */ 36 EXYNOS_DISPLAY_TYPE_LCD, 37 /* HDMI Interface. */ 38 EXYNOS_DISPLAY_TYPE_HDMI, 39 /* Virtual Display Interface. */ 40 EXYNOS_DISPLAY_TYPE_VIDI, 41 }; 42 43 struct exynos_drm_rect { 44 unsigned int x, y; 45 unsigned int w, h; 46 }; 47 48 /* 49 * Exynos drm plane state structure. 50 * 51 * @base: plane_state object (contains drm_framebuffer pointer) 52 * @src: rectangle of the source image data to be displayed (clipped to 53 * visible part). 54 * @crtc: rectangle of the target image position on hardware screen 55 * (clipped to visible part). 56 * @h_ratio: horizontal scaling ratio, 16.16 fixed point 57 * @v_ratio: vertical scaling ratio, 16.16 fixed point 58 * 59 * this structure consists plane state data that will be applied to hardware 60 * specific overlay info. 61 */ 62 63 struct exynos_drm_plane_state { 64 struct drm_plane_state base; 65 struct exynos_drm_rect crtc; 66 struct exynos_drm_rect src; 67 unsigned int h_ratio; 68 unsigned int v_ratio; 69 }; 70 71 static inline struct exynos_drm_plane_state * 72 to_exynos_plane_state(struct drm_plane_state *state) 73 { 74 return container_of(state, struct exynos_drm_plane_state, base); 75 } 76 77 /* 78 * Exynos drm common overlay structure. 79 * 80 * @base: plane object 81 * @index: hardware index of the overlay layer 82 * 83 * this structure is common to exynos SoC and its contents would be copied 84 * to hardware specific overlay info. 85 */ 86 87 struct exynos_drm_plane { 88 struct drm_plane base; 89 const struct exynos_drm_plane_config *config; 90 unsigned int index; 91 }; 92 93 #define EXYNOS_DRM_PLANE_CAP_DOUBLE (1 << 0) 94 #define EXYNOS_DRM_PLANE_CAP_SCALE (1 << 1) 95 #define EXYNOS_DRM_PLANE_CAP_ZPOS (1 << 2) 96 #define EXYNOS_DRM_PLANE_CAP_TILE (1 << 3) 97 #define EXYNOS_DRM_PLANE_CAP_PIX_BLEND (1 << 4) 98 #define EXYNOS_DRM_PLANE_CAP_WIN_BLEND (1 << 5) 99 100 /* 101 * Exynos DRM plane configuration structure. 102 * 103 * @zpos: initial z-position of the plane. 104 * @type: type of the plane (primary, cursor or overlay). 105 * @pixel_formats: supported pixel formats. 106 * @num_pixel_formats: number of elements in 'pixel_formats'. 107 * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*) 108 */ 109 110 struct exynos_drm_plane_config { 111 unsigned int zpos; 112 enum drm_plane_type type; 113 const uint32_t *pixel_formats; 114 unsigned int num_pixel_formats; 115 unsigned int capabilities; 116 }; 117 118 /* 119 * Exynos drm crtc ops 120 * 121 * @enable: enable the device 122 * @disable: disable the device 123 * @enable_vblank: specific driver callback for enabling vblank interrupt. 124 * @disable_vblank: specific driver callback for disabling vblank interrupt. 125 * @mode_valid: specific driver callback for mode validation 126 * @atomic_check: validate state 127 * @atomic_begin: prepare device to receive an update 128 * @atomic_flush: mark the end of device update 129 * @update_plane: apply hardware specific overlay data to registers. 130 * @disable_plane: disable hardware specific overlay. 131 * @te_handler: trigger to transfer video image at the tearing effect 132 * synchronization signal if there is a page flip request. 133 */ 134 struct exynos_drm_crtc; 135 struct exynos_drm_crtc_ops { 136 void (*enable)(struct exynos_drm_crtc *crtc); 137 void (*disable)(struct exynos_drm_crtc *crtc); 138 int (*enable_vblank)(struct exynos_drm_crtc *crtc); 139 void (*disable_vblank)(struct exynos_drm_crtc *crtc); 140 enum drm_mode_status (*mode_valid)(struct exynos_drm_crtc *crtc, 141 const struct drm_display_mode *mode); 142 bool (*mode_fixup)(struct exynos_drm_crtc *crtc, 143 const struct drm_display_mode *mode, 144 struct drm_display_mode *adjusted_mode); 145 int (*atomic_check)(struct exynos_drm_crtc *crtc, 146 struct drm_crtc_state *state); 147 void (*atomic_begin)(struct exynos_drm_crtc *crtc); 148 void (*update_plane)(struct exynos_drm_crtc *crtc, 149 struct exynos_drm_plane *plane); 150 void (*disable_plane)(struct exynos_drm_crtc *crtc, 151 struct exynos_drm_plane *plane); 152 void (*atomic_flush)(struct exynos_drm_crtc *crtc); 153 void (*te_handler)(struct exynos_drm_crtc *crtc); 154 }; 155 156 struct exynos_drm_clk { 157 void (*enable)(struct exynos_drm_clk *clk, bool enable); 158 }; 159 160 /* 161 * Exynos specific crtc structure. 162 * 163 * @base: crtc object. 164 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI. 165 * @ops: pointer to callbacks for exynos drm specific functionality 166 * @ctx: A pointer to the crtc's implementation specific context 167 * @pipe_clk: A pointer to the crtc's pipeline clock. 168 */ 169 struct exynos_drm_crtc { 170 struct drm_crtc base; 171 enum exynos_drm_output_type type; 172 const struct exynos_drm_crtc_ops *ops; 173 void *ctx; 174 struct exynos_drm_clk *pipe_clk; 175 bool i80_mode : 1; 176 }; 177 178 static inline void exynos_drm_pipe_clk_enable(struct exynos_drm_crtc *crtc, 179 bool enable) 180 { 181 if (crtc->pipe_clk) 182 crtc->pipe_clk->enable(crtc->pipe_clk, enable); 183 } 184 185 struct drm_exynos_file_private { 186 /* for g2d api */ 187 struct list_head inuse_cmdlist; 188 struct list_head event_list; 189 struct list_head userptr_list; 190 }; 191 192 /* 193 * Exynos drm private structure. 194 * 195 * @pending: the crtcs that have pending updates to finish 196 * @lock: protect access to @pending 197 * @wait: wait an atomic commit to finish 198 */ 199 struct exynos_drm_private { 200 struct drm_fb_helper *fb_helper; 201 202 struct device *g2d_dev; 203 struct device *dma_dev; 204 void *mapping; 205 206 /* for atomic commit */ 207 u32 pending; 208 spinlock_t lock; 209 wait_queue_head_t wait; 210 }; 211 212 static inline struct device *to_dma_dev(struct drm_device *dev) 213 { 214 struct exynos_drm_private *priv = dev->dev_private; 215 216 return priv->dma_dev; 217 } 218 219 static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) 220 { 221 struct exynos_drm_private *priv = drm_dev->dev_private; 222 223 return priv->mapping ? true : false; 224 } 225 226 int exynos_drm_register_dma(struct drm_device *drm, struct device *dev); 227 void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev); 228 void exynos_drm_cleanup_dma(struct drm_device *drm); 229 230 #ifdef CONFIG_DRM_EXYNOS_DPI 231 struct drm_encoder *exynos_dpi_probe(struct device *dev); 232 int exynos_dpi_remove(struct drm_encoder *encoder); 233 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder); 234 #else 235 static inline struct drm_encoder * 236 exynos_dpi_probe(struct device *dev) { return NULL; } 237 static inline int exynos_dpi_remove(struct drm_encoder *encoder) 238 { 239 return 0; 240 } 241 static inline int exynos_dpi_bind(struct drm_device *dev, 242 struct drm_encoder *encoder) 243 { 244 return 0; 245 } 246 #endif 247 248 #ifdef CONFIG_DRM_EXYNOS_FIMC 249 int exynos_drm_check_fimc_device(struct device *dev); 250 #else 251 static inline int exynos_drm_check_fimc_device(struct device *dev) 252 { 253 return 0; 254 } 255 #endif 256 257 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state, 258 bool nonblock); 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 vidi_driver; 269 extern struct platform_driver g2d_driver; 270 extern struct platform_driver fimc_driver; 271 extern struct platform_driver rotator_driver; 272 extern struct platform_driver scaler_driver; 273 extern struct platform_driver gsc_driver; 274 extern struct platform_driver mic_driver; 275 #endif 276