1 /* 2 * Copyright (c) 2016 Laurent Pinchart <laurent.pinchart@ideasonboard.com> 3 * 4 * DRM core format related functions 5 * 6 * Permission to use, copy, modify, distribute, and sell this software and its 7 * documentation for any purpose is hereby granted without fee, provided that 8 * the above copyright notice appear in all copies and that both that copyright 9 * notice and this permission notice appear in supporting documentation, and 10 * that the name of the copyright holders not be used in advertising or 11 * publicity pertaining to distribution of the software without specific, 12 * written prior permission. The copyright holders make no representations 13 * about the suitability of this software for any purpose. It is provided "as 14 * is" without express or implied warranty. 15 * 16 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 18 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 22 * OF THIS SOFTWARE. 23 */ 24 25 #include <linux/bug.h> 26 #include <linux/ctype.h> 27 #include <linux/export.h> 28 #include <linux/kernel.h> 29 30 #include <drm/drm_device.h> 31 #include <drm/drm_fourcc.h> 32 33 /** 34 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description 35 * @bpp: bits per pixels 36 * @depth: bit depth per pixel 37 * 38 * Computes a drm fourcc pixel format code for the given @bpp/@depth values. 39 */ 40 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 41 { 42 uint32_t fmt = DRM_FORMAT_INVALID; 43 44 switch (bpp) { 45 case 1: 46 if (depth == 1) 47 fmt = DRM_FORMAT_C1; 48 break; 49 50 case 2: 51 if (depth == 2) 52 fmt = DRM_FORMAT_C2; 53 break; 54 55 case 4: 56 if (depth == 4) 57 fmt = DRM_FORMAT_C4; 58 break; 59 60 case 8: 61 if (depth == 8) 62 fmt = DRM_FORMAT_C8; 63 break; 64 65 case 16: 66 switch (depth) { 67 case 15: 68 fmt = DRM_FORMAT_XRGB1555; 69 break; 70 case 16: 71 fmt = DRM_FORMAT_RGB565; 72 break; 73 default: 74 break; 75 } 76 break; 77 78 case 24: 79 if (depth == 24) 80 fmt = DRM_FORMAT_RGB888; 81 break; 82 83 case 32: 84 switch (depth) { 85 case 24: 86 fmt = DRM_FORMAT_XRGB8888; 87 break; 88 case 30: 89 fmt = DRM_FORMAT_XRGB2101010; 90 break; 91 case 32: 92 fmt = DRM_FORMAT_ARGB8888; 93 break; 94 default: 95 break; 96 } 97 break; 98 99 default: 100 break; 101 } 102 103 return fmt; 104 } 105 EXPORT_SYMBOL(drm_mode_legacy_fb_format); 106 107 /** 108 * drm_driver_legacy_fb_format - compute drm fourcc code from legacy description 109 * @dev: DRM device 110 * @bpp: bits per pixels 111 * @depth: bit depth per pixel 112 * 113 * Computes a drm fourcc pixel format code for the given @bpp/@depth values. 114 * Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config, 115 * and depending on the &drm_mode_config.quirk_addfb_prefer_host_byte_order flag 116 * it returns little endian byte order or host byte order framebuffer formats. 117 */ 118 uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, 119 uint32_t bpp, uint32_t depth) 120 { 121 uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth); 122 123 if (dev->mode_config.quirk_addfb_prefer_host_byte_order) { 124 if (fmt == DRM_FORMAT_XRGB8888) 125 fmt = DRM_FORMAT_HOST_XRGB8888; 126 if (fmt == DRM_FORMAT_ARGB8888) 127 fmt = DRM_FORMAT_HOST_ARGB8888; 128 if (fmt == DRM_FORMAT_RGB565) 129 fmt = DRM_FORMAT_HOST_RGB565; 130 if (fmt == DRM_FORMAT_XRGB1555) 131 fmt = DRM_FORMAT_HOST_XRGB1555; 132 } 133 134 if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp && 135 fmt == DRM_FORMAT_XRGB2101010) 136 fmt = DRM_FORMAT_XBGR2101010; 137 138 return fmt; 139 } 140 EXPORT_SYMBOL(drm_driver_legacy_fb_format); 141 142 /** 143 * drm_driver_color_mode_format - Compute DRM 4CC code from color mode 144 * @dev: DRM device 145 * @color_mode: command-line color mode 146 * 147 * Computes a DRM 4CC pixel format code for the given color mode using 148 * drm_driver_color_mode(). The color mode is in the format used and the 149 * kernel command line. It specifies the number of bits per pixel 150 * and color depth in a single value. 151 * 152 * Useful in fbdev emulation code, since that deals in those values. The 153 * helper does not consider YUV or other complicated formats. This means 154 * only legacy formats are supported (fmt->depth is a legacy field), but 155 * the framebuffer emulation can only deal with such formats, specifically 156 * RGB/BGA formats. 157 */ 158 uint32_t drm_driver_color_mode_format(struct drm_device *dev, unsigned int color_mode) 159 { 160 switch (color_mode) { 161 case 15: 162 return drm_driver_legacy_fb_format(dev, 16, 15); 163 case 32: 164 return drm_driver_legacy_fb_format(dev, 32, 24); 165 default: 166 return drm_driver_legacy_fb_format(dev, color_mode, color_mode); 167 } 168 } 169 EXPORT_SYMBOL(drm_driver_color_mode_format); 170 171 /* 172 * Internal function to query information for a given format. See 173 * drm_format_info() for the public API. 174 */ 175 const struct drm_format_info *__drm_format_info(u32 format) 176 { 177 static const struct drm_format_info formats[] = { 178 { .format = DRM_FORMAT_C1, .depth = 1, .num_planes = 1, 179 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 180 { .format = DRM_FORMAT_C2, .depth = 2, .num_planes = 1, 181 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 182 { .format = DRM_FORMAT_C4, .depth = 4, .num_planes = 1, 183 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 184 { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 185 { .format = DRM_FORMAT_D1, .depth = 1, .num_planes = 1, 186 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 187 { .format = DRM_FORMAT_D2, .depth = 2, .num_planes = 1, 188 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 189 { .format = DRM_FORMAT_D4, .depth = 4, .num_planes = 1, 190 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 191 { .format = DRM_FORMAT_D8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 192 { .format = DRM_FORMAT_R1, .depth = 1, .num_planes = 1, 193 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 194 { .format = DRM_FORMAT_R2, .depth = 2, .num_planes = 1, 195 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 196 { .format = DRM_FORMAT_R4, .depth = 4, .num_planes = 1, 197 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 198 { .format = DRM_FORMAT_R8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 199 { .format = DRM_FORMAT_R10, .depth = 10, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 200 { .format = DRM_FORMAT_R12, .depth = 12, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 201 { .format = DRM_FORMAT_RGB332, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 202 { .format = DRM_FORMAT_BGR233, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 203 { .format = DRM_FORMAT_XRGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 204 { .format = DRM_FORMAT_XBGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 205 { .format = DRM_FORMAT_RGBX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 206 { .format = DRM_FORMAT_BGRX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 207 { .format = DRM_FORMAT_ARGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 208 { .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 209 { .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 210 { .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 211 { .format = DRM_FORMAT_XRGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 212 { .format = DRM_FORMAT_XBGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 213 { .format = DRM_FORMAT_RGBX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 214 { .format = DRM_FORMAT_BGRX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 215 { .format = DRM_FORMAT_ARGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 216 { .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 217 { .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 218 { .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 219 { .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 220 { .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 221 #ifdef __BIG_ENDIAN 222 { .format = DRM_FORMAT_XRGB1555 | DRM_FORMAT_BIG_ENDIAN, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 223 { .format = DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 224 #endif 225 { .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 }, 226 { .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 }, 227 { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 228 { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 229 { .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 230 { .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 231 { .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 232 { .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 233 { .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 234 { .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 235 { .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 236 { .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 237 { .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 238 { .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 239 { .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 240 { .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 241 { .format = DRM_FORMAT_RGB161616, .depth = 0, 242 .num_planes = 1, .char_per_block = { 6, 0, 0 }, 243 .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 }, 244 .hsub = 1, .vsub = 1, .has_alpha = false }, 245 { .format = DRM_FORMAT_BGR161616, .depth = 0, 246 .num_planes = 1, .char_per_block = { 6, 0, 0 }, 247 .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 }, 248 .hsub = 1, .vsub = 1, .has_alpha = false }, 249 { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 250 { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 251 { .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 252 { .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 253 { .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 254 { .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 255 { .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 256 { .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 257 { .format = DRM_FORMAT_AXBXGXRX106106106106, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 258 { .format = DRM_FORMAT_XRGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 259 { .format = DRM_FORMAT_XBGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 260 { .format = DRM_FORMAT_ARGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 261 { .format = DRM_FORMAT_ABGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 262 { .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 263 { .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 264 { .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 265 { .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 266 { .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 267 { .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 268 { .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, 269 { .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, 270 { .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, 271 { .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, 272 { .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 273 { .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 274 { .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 275 { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 276 { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 277 { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 278 { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 279 { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 280 { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 281 { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 282 { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 283 { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 284 { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 285 { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 286 { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 287 { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 288 { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 289 { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 290 { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 291 { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 292 { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 293 { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 294 { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 295 { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 296 { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 297 { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 298 { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 299 { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 300 { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1, 301 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 302 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 303 { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1, 304 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 305 .hsub = 2, .vsub = 2, .is_yuv = true }, 306 { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1, 307 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 308 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 309 { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1, 310 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 311 .hsub = 2, .vsub = 2, .is_yuv = true }, 312 { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2, 313 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 314 .hsub = 2, .vsub = 2, .is_yuv = true}, 315 { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2, 316 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 317 .hsub = 2, .vsub = 2, .is_yuv = true}, 318 { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2, 319 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 320 .hsub = 2, .vsub = 2, .is_yuv = true}, 321 { .format = DRM_FORMAT_P210, .depth = 0, 322 .num_planes = 2, .char_per_block = { 2, 4, 0 }, 323 .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 324 .vsub = 1, .is_yuv = true }, 325 { .format = DRM_FORMAT_VUY101010, .depth = 0, 326 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1, 327 .is_yuv = true }, 328 { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0, 329 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 330 .is_yuv = true }, 331 { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0, 332 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 333 .is_yuv = true }, 334 { .format = DRM_FORMAT_NV15, .depth = 0, 335 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 336 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 337 .vsub = 2, .is_yuv = true }, 338 { .format = DRM_FORMAT_NV20, .depth = 0, 339 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 340 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 341 .vsub = 1, .is_yuv = true }, 342 { .format = DRM_FORMAT_NV30, .depth = 0, 343 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 344 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1, 345 .vsub = 1, .is_yuv = true }, 346 { .format = DRM_FORMAT_Q410, .depth = 0, 347 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 348 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 349 .vsub = 1, .is_yuv = true }, 350 { .format = DRM_FORMAT_Q401, .depth = 0, 351 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 352 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 353 .vsub = 1, .is_yuv = true }, 354 { .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2, 355 .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 }, 356 .hsub = 2, .vsub = 2, .is_yuv = true}, 357 { .format = DRM_FORMAT_S010, .depth = 0, .num_planes = 3, 358 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 359 .hsub = 2, .vsub = 2, .is_yuv = true}, 360 { .format = DRM_FORMAT_S210, .depth = 0, .num_planes = 3, 361 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 362 .hsub = 2, .vsub = 1, .is_yuv = true}, 363 { .format = DRM_FORMAT_S410, .depth = 0, .num_planes = 3, 364 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 365 .hsub = 1, .vsub = 1, .is_yuv = true}, 366 { .format = DRM_FORMAT_S012, .depth = 0, .num_planes = 3, 367 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 368 .hsub = 2, .vsub = 2, .is_yuv = true}, 369 { .format = DRM_FORMAT_S212, .depth = 0, .num_planes = 3, 370 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 371 .hsub = 2, .vsub = 1, .is_yuv = true}, 372 { .format = DRM_FORMAT_S412, .depth = 0, .num_planes = 3, 373 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 374 .hsub = 1, .vsub = 1, .is_yuv = true}, 375 { .format = DRM_FORMAT_S016, .depth = 0, .num_planes = 3, 376 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 377 .hsub = 2, .vsub = 2, .is_yuv = true}, 378 { .format = DRM_FORMAT_S216, .depth = 0, .num_planes = 3, 379 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 380 .hsub = 2, .vsub = 1, .is_yuv = true}, 381 { .format = DRM_FORMAT_S416, .depth = 0, .num_planes = 3, 382 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 383 .hsub = 1, .vsub = 1, .is_yuv = true}, 384 }; 385 386 unsigned int i; 387 388 for (i = 0; i < ARRAY_SIZE(formats); ++i) { 389 if (formats[i].format == format) 390 return &formats[i]; 391 } 392 393 return NULL; 394 } 395 396 /** 397 * drm_format_info - query information for a given format 398 * @format: pixel format (DRM_FORMAT_*) 399 * 400 * The caller should only pass a supported pixel format to this function. 401 * Unsupported pixel formats will generate a warning in the kernel log. 402 * 403 * Returns: 404 * The instance of struct drm_format_info that describes the pixel format, or 405 * NULL if the format is unsupported. 406 */ 407 const struct drm_format_info *drm_format_info(u32 format) 408 { 409 const struct drm_format_info *info; 410 411 info = __drm_format_info(format); 412 WARN_ON(!info); 413 return info; 414 } 415 EXPORT_SYMBOL(drm_format_info); 416 417 /** 418 * drm_get_format_info - query information for a given framebuffer configuration 419 * @dev: DRM device 420 * @pixel_format: pixel format (DRM_FORMAT_*) 421 * @modifier: modifier 422 * 423 * Returns: 424 * The instance of struct drm_format_info that describes the pixel format, or 425 * NULL if the format is unsupported. 426 */ 427 const struct drm_format_info * 428 drm_get_format_info(struct drm_device *dev, 429 u32 pixel_format, u64 modifier) 430 { 431 const struct drm_format_info *info = NULL; 432 433 if (dev->mode_config.funcs->get_format_info) 434 info = dev->mode_config.funcs->get_format_info(pixel_format, 435 modifier); 436 437 if (!info) 438 info = drm_format_info(pixel_format); 439 440 return info; 441 } 442 EXPORT_SYMBOL(drm_get_format_info); 443 444 /** 445 * drm_format_info_block_width - width in pixels of block. 446 * @info: pixel format info 447 * @plane: plane index 448 * 449 * Returns: 450 * The width in pixels of a block, depending on the plane index. 451 */ 452 unsigned int drm_format_info_block_width(const struct drm_format_info *info, 453 int plane) 454 { 455 if (!info || plane < 0 || plane >= info->num_planes) 456 return 0; 457 458 if (!info->block_w[plane]) 459 return 1; 460 return info->block_w[plane]; 461 } 462 EXPORT_SYMBOL(drm_format_info_block_width); 463 464 /** 465 * drm_format_info_block_height - height in pixels of a block 466 * @info: pixel format info 467 * @plane: plane index 468 * 469 * Returns: 470 * The height in pixels of a block, depending on the plane index. 471 */ 472 unsigned int drm_format_info_block_height(const struct drm_format_info *info, 473 int plane) 474 { 475 if (!info || plane < 0 || plane >= info->num_planes) 476 return 0; 477 478 if (!info->block_h[plane]) 479 return 1; 480 return info->block_h[plane]; 481 } 482 EXPORT_SYMBOL(drm_format_info_block_height); 483 484 /** 485 * drm_format_info_bpp - number of bits per pixel 486 * @info: pixel format info 487 * @plane: plane index 488 * 489 * Returns: 490 * The actual number of bits per pixel, depending on the plane index. 491 */ 492 unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane) 493 { 494 if (!info || plane < 0 || plane >= info->num_planes) 495 return 0; 496 497 return info->char_per_block[plane] * 8 / 498 (drm_format_info_block_width(info, plane) * 499 drm_format_info_block_height(info, plane)); 500 } 501 EXPORT_SYMBOL(drm_format_info_bpp); 502 503 /** 504 * drm_format_info_min_pitch - computes the minimum required pitch in bytes 505 * @info: pixel format info 506 * @plane: plane index 507 * @buffer_width: buffer width in pixels 508 * 509 * Returns: 510 * The minimum required pitch in bytes for a buffer by taking into consideration 511 * the pixel format information and the buffer width. 512 */ 513 uint64_t drm_format_info_min_pitch(const struct drm_format_info *info, 514 int plane, unsigned int buffer_width) 515 { 516 if (!info || plane < 0 || plane >= info->num_planes) 517 return 0; 518 519 return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane], 520 drm_format_info_block_width(info, plane) * 521 drm_format_info_block_height(info, plane)); 522 } 523 EXPORT_SYMBOL(drm_format_info_min_pitch); 524