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_Y8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 279 { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 280 { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 281 { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 282 { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 283 { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 284 { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 285 { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 286 { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 287 { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 288 { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 289 { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 290 { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 291 { .format = DRM_FORMAT_XVUY2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 292 { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 293 { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 294 { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 295 { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 296 { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 297 { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 298 { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 299 { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 300 { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 301 { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 302 { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1, 303 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 304 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 305 { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1, 306 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 307 .hsub = 2, .vsub = 2, .is_yuv = true }, 308 { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1, 309 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 310 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 311 { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1, 312 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 313 .hsub = 2, .vsub = 2, .is_yuv = true }, 314 { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2, 315 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 316 .hsub = 2, .vsub = 2, .is_yuv = true}, 317 { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2, 318 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 319 .hsub = 2, .vsub = 2, .is_yuv = true}, 320 { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2, 321 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 322 .hsub = 2, .vsub = 2, .is_yuv = true}, 323 { .format = DRM_FORMAT_P210, .depth = 0, 324 .num_planes = 2, .char_per_block = { 2, 4, 0 }, 325 .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 326 .vsub = 1, .is_yuv = true }, 327 { .format = DRM_FORMAT_VUY101010, .depth = 0, 328 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1, 329 .is_yuv = true }, 330 { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0, 331 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 332 .is_yuv = true }, 333 { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0, 334 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 335 .is_yuv = true }, 336 { .format = DRM_FORMAT_NV15, .depth = 0, 337 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 338 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 339 .vsub = 2, .is_yuv = true }, 340 { .format = DRM_FORMAT_NV20, .depth = 0, 341 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 342 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 343 .vsub = 1, .is_yuv = true }, 344 { .format = DRM_FORMAT_NV30, .depth = 0, 345 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 346 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1, 347 .vsub = 1, .is_yuv = true }, 348 { .format = DRM_FORMAT_Q410, .depth = 0, 349 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 350 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 351 .vsub = 1, .is_yuv = true }, 352 { .format = DRM_FORMAT_Q401, .depth = 0, 353 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 354 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 355 .vsub = 1, .is_yuv = true }, 356 { .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2, 357 .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 }, 358 .hsub = 2, .vsub = 2, .is_yuv = true}, 359 { .format = DRM_FORMAT_P230, .depth = 0, .num_planes = 2, 360 .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 }, 361 .hsub = 2, .vsub = 1, .is_yuv = true }, 362 { .format = DRM_FORMAT_S010, .depth = 0, .num_planes = 3, 363 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 364 .hsub = 2, .vsub = 2, .is_yuv = true}, 365 { .format = DRM_FORMAT_S210, .depth = 0, .num_planes = 3, 366 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 367 .hsub = 2, .vsub = 1, .is_yuv = true}, 368 { .format = DRM_FORMAT_S410, .depth = 0, .num_planes = 3, 369 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 370 .hsub = 1, .vsub = 1, .is_yuv = true}, 371 { .format = DRM_FORMAT_S012, .depth = 0, .num_planes = 3, 372 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 373 .hsub = 2, .vsub = 2, .is_yuv = true}, 374 { .format = DRM_FORMAT_S212, .depth = 0, .num_planes = 3, 375 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 376 .hsub = 2, .vsub = 1, .is_yuv = true}, 377 { .format = DRM_FORMAT_S412, .depth = 0, .num_planes = 3, 378 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 379 .hsub = 1, .vsub = 1, .is_yuv = true}, 380 { .format = DRM_FORMAT_S016, .depth = 0, .num_planes = 3, 381 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 382 .hsub = 2, .vsub = 2, .is_yuv = true}, 383 { .format = DRM_FORMAT_S216, .depth = 0, .num_planes = 3, 384 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 385 .hsub = 2, .vsub = 1, .is_yuv = true}, 386 { .format = DRM_FORMAT_S416, .depth = 0, .num_planes = 3, 387 .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, 388 .hsub = 1, .vsub = 1, .is_yuv = true}, 389 { .format = DRM_FORMAT_XYYY2101010, .depth = 0, .num_planes = 1, 390 .char_per_block = { 4, 0, 0 }, .block_w = { 3, 0, 0 }, .block_h = { 1, 0, 0 }, 391 .hsub = 1, .vsub = 1, .is_yuv = true }, 392 { .format = DRM_FORMAT_T430, .depth = 0, .num_planes = 3, 393 .char_per_block = { 4, 4, 4 }, .block_w = { 3, 3, 3 }, .block_h = { 1, 1, 1 }, 394 .hsub = 1, .vsub = 1, .is_yuv = true }, 395 }; 396 397 unsigned int i; 398 399 for (i = 0; i < ARRAY_SIZE(formats); ++i) { 400 if (formats[i].format == format) 401 return &formats[i]; 402 } 403 404 return NULL; 405 } 406 407 /** 408 * drm_format_info - query information for a given format 409 * @format: pixel format (DRM_FORMAT_*) 410 * 411 * The caller should only pass a supported pixel format to this function. 412 * Unsupported pixel formats will generate a warning in the kernel log. 413 * 414 * Returns: 415 * The instance of struct drm_format_info that describes the pixel format, or 416 * NULL if the format is unsupported. 417 */ 418 const struct drm_format_info *drm_format_info(u32 format) 419 { 420 const struct drm_format_info *info; 421 422 info = __drm_format_info(format); 423 WARN_ON(!info); 424 return info; 425 } 426 EXPORT_SYMBOL(drm_format_info); 427 428 /** 429 * drm_get_format_info - query information for a given framebuffer configuration 430 * @dev: DRM device 431 * @pixel_format: pixel format (DRM_FORMAT_*) 432 * @modifier: modifier 433 * 434 * Returns: 435 * The instance of struct drm_format_info that describes the pixel format, or 436 * NULL if the format is unsupported. 437 */ 438 const struct drm_format_info * 439 drm_get_format_info(struct drm_device *dev, 440 u32 pixel_format, u64 modifier) 441 { 442 const struct drm_format_info *info = NULL; 443 444 if (dev->mode_config.funcs->get_format_info) 445 info = dev->mode_config.funcs->get_format_info(pixel_format, 446 modifier); 447 448 if (!info) 449 info = drm_format_info(pixel_format); 450 451 return info; 452 } 453 EXPORT_SYMBOL(drm_get_format_info); 454 455 /** 456 * drm_format_info_block_width - width in pixels of block. 457 * @info: pixel format info 458 * @plane: plane index 459 * 460 * Returns: 461 * The width in pixels of a block, depending on the plane index. 462 */ 463 unsigned int drm_format_info_block_width(const struct drm_format_info *info, 464 int plane) 465 { 466 if (!info || plane < 0 || plane >= info->num_planes) 467 return 0; 468 469 if (!info->block_w[plane]) 470 return 1; 471 return info->block_w[plane]; 472 } 473 EXPORT_SYMBOL(drm_format_info_block_width); 474 475 /** 476 * drm_format_info_block_height - height in pixels of a block 477 * @info: pixel format info 478 * @plane: plane index 479 * 480 * Returns: 481 * The height in pixels of a block, depending on the plane index. 482 */ 483 unsigned int drm_format_info_block_height(const struct drm_format_info *info, 484 int plane) 485 { 486 if (!info || plane < 0 || plane >= info->num_planes) 487 return 0; 488 489 if (!info->block_h[plane]) 490 return 1; 491 return info->block_h[plane]; 492 } 493 EXPORT_SYMBOL(drm_format_info_block_height); 494 495 /** 496 * drm_format_info_bpp - number of bits per pixel 497 * @info: pixel format info 498 * @plane: plane index 499 * 500 * Returns: 501 * The actual number of bits per pixel, depending on the plane index. 502 */ 503 unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane) 504 { 505 unsigned int block_size; 506 507 if (!info || plane < 0 || plane >= info->num_planes) 508 return 0; 509 510 block_size = drm_format_info_block_width(info, plane) * 511 drm_format_info_block_height(info, plane); 512 513 if (info->char_per_block[plane] * 8 % block_size) { 514 pr_warn("unable to return an integer bpp\n"); 515 return 0; 516 } 517 518 return info->char_per_block[plane] * 8 / block_size; 519 } 520 EXPORT_SYMBOL(drm_format_info_bpp); 521 522 /** 523 * drm_format_info_min_pitch - computes the minimum required pitch in bytes 524 * @info: pixel format info 525 * @plane: plane index 526 * @buffer_width: buffer width in pixels 527 * 528 * Returns: 529 * The minimum required pitch in bytes for a buffer by taking into consideration 530 * the pixel format information and the buffer width. 531 */ 532 uint64_t drm_format_info_min_pitch(const struct drm_format_info *info, 533 int plane, unsigned int buffer_width) 534 { 535 if (!info || plane < 0 || plane >= info->num_planes) 536 return 0; 537 538 return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane], 539 drm_format_info_block_width(info, plane) * 540 drm_format_info_block_height(info, plane)); 541 } 542 EXPORT_SYMBOL(drm_format_info_min_pitch); 543