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_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 242 { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 243 { .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 244 { .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 245 { .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 246 { .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 247 { .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 248 { .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 249 { .format = DRM_FORMAT_AXBXGXRX106106106106, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 250 { .format = DRM_FORMAT_XRGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 251 { .format = DRM_FORMAT_XBGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 252 { .format = DRM_FORMAT_ARGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 253 { .format = DRM_FORMAT_ABGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 254 { .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 255 { .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 256 { .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 257 { .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 258 { .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 259 { .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 260 { .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, 261 { .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, 262 { .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, 263 { .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, 264 { .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 265 { .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 266 { .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 267 { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 268 { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 269 { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 270 { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 271 { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 272 { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 273 { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 274 { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 275 { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 276 { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 277 { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 278 { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 279 { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 280 { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 281 { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 282 { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 283 { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 284 { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 285 { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 286 { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 287 { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 288 { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 289 { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 290 { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 291 { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 292 { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1, 293 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 294 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 295 { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1, 296 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 297 .hsub = 2, .vsub = 2, .is_yuv = true }, 298 { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1, 299 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 300 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 301 { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1, 302 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 303 .hsub = 2, .vsub = 2, .is_yuv = true }, 304 { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2, 305 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 306 .hsub = 2, .vsub = 2, .is_yuv = true}, 307 { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2, 308 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 309 .hsub = 2, .vsub = 2, .is_yuv = true}, 310 { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2, 311 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 312 .hsub = 2, .vsub = 2, .is_yuv = true}, 313 { .format = DRM_FORMAT_P210, .depth = 0, 314 .num_planes = 2, .char_per_block = { 2, 4, 0 }, 315 .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 316 .vsub = 1, .is_yuv = true }, 317 { .format = DRM_FORMAT_VUY101010, .depth = 0, 318 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1, 319 .is_yuv = true }, 320 { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0, 321 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 322 .is_yuv = true }, 323 { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0, 324 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 325 .is_yuv = true }, 326 { .format = DRM_FORMAT_NV15, .depth = 0, 327 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 328 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 329 .vsub = 2, .is_yuv = true }, 330 { .format = DRM_FORMAT_NV20, .depth = 0, 331 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 332 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 333 .vsub = 1, .is_yuv = true }, 334 { .format = DRM_FORMAT_NV30, .depth = 0, 335 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 336 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1, 337 .vsub = 1, .is_yuv = true }, 338 { .format = DRM_FORMAT_Q410, .depth = 0, 339 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 340 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 341 .vsub = 1, .is_yuv = true }, 342 { .format = DRM_FORMAT_Q401, .depth = 0, 343 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 344 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 345 .vsub = 1, .is_yuv = true }, 346 { .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2, 347 .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 }, 348 .hsub = 2, .vsub = 2, .is_yuv = true}, 349 }; 350 351 unsigned int i; 352 353 for (i = 0; i < ARRAY_SIZE(formats); ++i) { 354 if (formats[i].format == format) 355 return &formats[i]; 356 } 357 358 return NULL; 359 } 360 361 /** 362 * drm_format_info - query information for a given format 363 * @format: pixel format (DRM_FORMAT_*) 364 * 365 * The caller should only pass a supported pixel format to this function. 366 * Unsupported pixel formats will generate a warning in the kernel log. 367 * 368 * Returns: 369 * The instance of struct drm_format_info that describes the pixel format, or 370 * NULL if the format is unsupported. 371 */ 372 const struct drm_format_info *drm_format_info(u32 format) 373 { 374 const struct drm_format_info *info; 375 376 info = __drm_format_info(format); 377 WARN_ON(!info); 378 return info; 379 } 380 EXPORT_SYMBOL(drm_format_info); 381 382 /** 383 * drm_get_format_info - query information for a given framebuffer configuration 384 * @dev: DRM device 385 * @mode_cmd: metadata from the userspace fb creation request 386 * 387 * Returns: 388 * The instance of struct drm_format_info that describes the pixel format, or 389 * NULL if the format is unsupported. 390 */ 391 const struct drm_format_info * 392 drm_get_format_info(struct drm_device *dev, 393 const struct drm_mode_fb_cmd2 *mode_cmd) 394 { 395 const struct drm_format_info *info = NULL; 396 397 if (dev->mode_config.funcs->get_format_info) 398 info = dev->mode_config.funcs->get_format_info(mode_cmd); 399 400 if (!info) 401 info = drm_format_info(mode_cmd->pixel_format); 402 403 return info; 404 } 405 EXPORT_SYMBOL(drm_get_format_info); 406 407 /** 408 * drm_format_info_block_width - width in pixels of block. 409 * @info: pixel format info 410 * @plane: plane index 411 * 412 * Returns: 413 * The width in pixels of a block, depending on the plane index. 414 */ 415 unsigned int drm_format_info_block_width(const struct drm_format_info *info, 416 int plane) 417 { 418 if (!info || plane < 0 || plane >= info->num_planes) 419 return 0; 420 421 if (!info->block_w[plane]) 422 return 1; 423 return info->block_w[plane]; 424 } 425 EXPORT_SYMBOL(drm_format_info_block_width); 426 427 /** 428 * drm_format_info_block_height - height in pixels of a block 429 * @info: pixel format info 430 * @plane: plane index 431 * 432 * Returns: 433 * The height in pixels of a block, depending on the plane index. 434 */ 435 unsigned int drm_format_info_block_height(const struct drm_format_info *info, 436 int plane) 437 { 438 if (!info || plane < 0 || plane >= info->num_planes) 439 return 0; 440 441 if (!info->block_h[plane]) 442 return 1; 443 return info->block_h[plane]; 444 } 445 EXPORT_SYMBOL(drm_format_info_block_height); 446 447 /** 448 * drm_format_info_bpp - number of bits per pixel 449 * @info: pixel format info 450 * @plane: plane index 451 * 452 * Returns: 453 * The actual number of bits per pixel, depending on the plane index. 454 */ 455 unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane) 456 { 457 if (!info || plane < 0 || plane >= info->num_planes) 458 return 0; 459 460 return info->char_per_block[plane] * 8 / 461 (drm_format_info_block_width(info, plane) * 462 drm_format_info_block_height(info, plane)); 463 } 464 EXPORT_SYMBOL(drm_format_info_bpp); 465 466 /** 467 * drm_format_info_min_pitch - computes the minimum required pitch in bytes 468 * @info: pixel format info 469 * @plane: plane index 470 * @buffer_width: buffer width in pixels 471 * 472 * Returns: 473 * The minimum required pitch in bytes for a buffer by taking into consideration 474 * the pixel format information and the buffer width. 475 */ 476 uint64_t drm_format_info_min_pitch(const struct drm_format_info *info, 477 int plane, unsigned int buffer_width) 478 { 479 if (!info || plane < 0 || plane >= info->num_planes) 480 return 0; 481 482 return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane], 483 drm_format_info_block_width(info, plane) * 484 drm_format_info_block_height(info, plane)); 485 } 486 EXPORT_SYMBOL(drm_format_info_min_pitch); 487