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 * Useful in fbdev emulation code, since that deals in those values. 40 */ 41 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 42 { 43 uint32_t fmt = DRM_FORMAT_INVALID; 44 45 switch (bpp) { 46 case 1: 47 if (depth == 1) 48 fmt = DRM_FORMAT_C1; 49 break; 50 51 case 2: 52 if (depth == 2) 53 fmt = DRM_FORMAT_C2; 54 break; 55 56 case 4: 57 if (depth == 4) 58 fmt = DRM_FORMAT_C4; 59 break; 60 61 case 8: 62 if (depth == 8) 63 fmt = DRM_FORMAT_C8; 64 break; 65 66 case 16: 67 switch (depth) { 68 case 15: 69 fmt = DRM_FORMAT_XRGB1555; 70 break; 71 case 16: 72 fmt = DRM_FORMAT_RGB565; 73 break; 74 default: 75 break; 76 } 77 break; 78 79 case 24: 80 if (depth == 24) 81 fmt = DRM_FORMAT_RGB888; 82 break; 83 84 case 32: 85 switch (depth) { 86 case 24: 87 fmt = DRM_FORMAT_XRGB8888; 88 break; 89 case 30: 90 fmt = DRM_FORMAT_XRGB2101010; 91 break; 92 case 32: 93 fmt = DRM_FORMAT_ARGB8888; 94 break; 95 default: 96 break; 97 } 98 break; 99 100 default: 101 break; 102 } 103 104 return fmt; 105 } 106 EXPORT_SYMBOL(drm_mode_legacy_fb_format); 107 108 /** 109 * drm_driver_legacy_fb_format - compute drm fourcc code from legacy description 110 * @dev: DRM device 111 * @bpp: bits per pixels 112 * @depth: bit depth per pixel 113 * 114 * Computes a drm fourcc pixel format code for the given @bpp/@depth values. 115 * Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config, 116 * and depending on the &drm_mode_config.quirk_addfb_prefer_host_byte_order flag 117 * it returns little endian byte order or host byte order framebuffer formats. 118 */ 119 uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, 120 uint32_t bpp, uint32_t depth) 121 { 122 uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth); 123 124 if (dev->mode_config.quirk_addfb_prefer_host_byte_order) { 125 if (fmt == DRM_FORMAT_XRGB8888) 126 fmt = DRM_FORMAT_HOST_XRGB8888; 127 if (fmt == DRM_FORMAT_ARGB8888) 128 fmt = DRM_FORMAT_HOST_ARGB8888; 129 if (fmt == DRM_FORMAT_RGB565) 130 fmt = DRM_FORMAT_HOST_RGB565; 131 if (fmt == DRM_FORMAT_XRGB1555) 132 fmt = DRM_FORMAT_HOST_XRGB1555; 133 } 134 135 if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp && 136 fmt == DRM_FORMAT_XRGB2101010) 137 fmt = DRM_FORMAT_XBGR2101010; 138 139 return fmt; 140 } 141 EXPORT_SYMBOL(drm_driver_legacy_fb_format); 142 143 /* 144 * Internal function to query information for a given format. See 145 * drm_format_info() for the public API. 146 */ 147 const struct drm_format_info *__drm_format_info(u32 format) 148 { 149 static const struct drm_format_info formats[] = { 150 { .format = DRM_FORMAT_C1, .depth = 1, .num_planes = 1, 151 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 152 { .format = DRM_FORMAT_C2, .depth = 2, .num_planes = 1, 153 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 154 { .format = DRM_FORMAT_C4, .depth = 4, .num_planes = 1, 155 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 156 { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_color_indexed = true }, 157 { .format = DRM_FORMAT_D1, .depth = 1, .num_planes = 1, 158 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 159 { .format = DRM_FORMAT_D2, .depth = 2, .num_planes = 1, 160 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 161 { .format = DRM_FORMAT_D4, .depth = 4, .num_planes = 1, 162 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 163 { .format = DRM_FORMAT_D8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 164 { .format = DRM_FORMAT_R1, .depth = 1, .num_planes = 1, 165 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 166 { .format = DRM_FORMAT_R2, .depth = 2, .num_planes = 1, 167 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 168 { .format = DRM_FORMAT_R4, .depth = 4, .num_planes = 1, 169 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, 170 { .format = DRM_FORMAT_R8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 171 { .format = DRM_FORMAT_R10, .depth = 10, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 172 { .format = DRM_FORMAT_R12, .depth = 12, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 173 { .format = DRM_FORMAT_RGB332, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 174 { .format = DRM_FORMAT_BGR233, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, 175 { .format = DRM_FORMAT_XRGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 176 { .format = DRM_FORMAT_XBGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 177 { .format = DRM_FORMAT_RGBX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 178 { .format = DRM_FORMAT_BGRX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 179 { .format = DRM_FORMAT_ARGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 180 { .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 181 { .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 182 { .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 183 { .format = DRM_FORMAT_XRGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 184 { .format = DRM_FORMAT_XBGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 185 { .format = DRM_FORMAT_RGBX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 186 { .format = DRM_FORMAT_BGRX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 187 { .format = DRM_FORMAT_ARGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 188 { .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 189 { .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 190 { .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 191 { .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 192 { .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 193 #ifdef __BIG_ENDIAN 194 { .format = DRM_FORMAT_XRGB1555 | DRM_FORMAT_BIG_ENDIAN, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 195 { .format = DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 }, 196 #endif 197 { .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 }, 198 { .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 }, 199 { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 200 { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 201 { .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 202 { .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 203 { .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 204 { .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 205 { .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 206 { .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 207 { .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 208 { .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 }, 209 { .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 210 { .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 211 { .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 212 { .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 213 { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 214 { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 215 { .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 216 { .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 217 { .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 218 { .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 219 { .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 220 { .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 221 { .format = DRM_FORMAT_AXBXGXRX106106106106, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 222 { .format = DRM_FORMAT_XRGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 223 { .format = DRM_FORMAT_XBGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, 224 { .format = DRM_FORMAT_ARGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 225 { .format = DRM_FORMAT_ABGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 226 { .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 227 { .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 228 { .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 229 { .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 230 { .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 231 { .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, 232 { .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, 233 { .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, 234 { .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, 235 { .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, 236 { .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 237 { .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 238 { .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 239 { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 240 { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 241 { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 242 { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 243 { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, 244 { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 245 { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 246 { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 247 { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 248 { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 249 { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 250 { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 251 { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 252 { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 253 { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 254 { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 255 { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 256 { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 257 { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, 258 { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 259 { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 260 { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true }, 261 { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 262 { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 263 { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, 264 { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1, 265 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 266 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 267 { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1, 268 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 269 .hsub = 2, .vsub = 2, .is_yuv = true }, 270 { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1, 271 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 272 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true }, 273 { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1, 274 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 }, 275 .hsub = 2, .vsub = 2, .is_yuv = true }, 276 { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2, 277 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 278 .hsub = 2, .vsub = 2, .is_yuv = true}, 279 { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2, 280 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 281 .hsub = 2, .vsub = 2, .is_yuv = true}, 282 { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2, 283 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, 284 .hsub = 2, .vsub = 2, .is_yuv = true}, 285 { .format = DRM_FORMAT_P210, .depth = 0, 286 .num_planes = 2, .char_per_block = { 2, 4, 0 }, 287 .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 288 .vsub = 1, .is_yuv = true }, 289 { .format = DRM_FORMAT_VUY101010, .depth = 0, 290 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1, 291 .is_yuv = true }, 292 { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0, 293 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 294 .is_yuv = true }, 295 { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0, 296 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, 297 .is_yuv = true }, 298 { .format = DRM_FORMAT_NV15, .depth = 0, 299 .num_planes = 2, .char_per_block = { 5, 5, 0 }, 300 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, 301 .vsub = 2, .is_yuv = true }, 302 { .format = DRM_FORMAT_Q410, .depth = 0, 303 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 304 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 305 .vsub = 1, .is_yuv = true }, 306 { .format = DRM_FORMAT_Q401, .depth = 0, 307 .num_planes = 3, .char_per_block = { 2, 2, 2 }, 308 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1, 309 .vsub = 1, .is_yuv = true }, 310 { .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2, 311 .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 }, 312 .hsub = 2, .vsub = 2, .is_yuv = true}, 313 }; 314 315 unsigned int i; 316 317 for (i = 0; i < ARRAY_SIZE(formats); ++i) { 318 if (formats[i].format == format) 319 return &formats[i]; 320 } 321 322 return NULL; 323 } 324 325 /** 326 * drm_format_info - query information for a given format 327 * @format: pixel format (DRM_FORMAT_*) 328 * 329 * The caller should only pass a supported pixel format to this function. 330 * Unsupported pixel formats will generate a warning in the kernel log. 331 * 332 * Returns: 333 * The instance of struct drm_format_info that describes the pixel format, or 334 * NULL if the format is unsupported. 335 */ 336 const struct drm_format_info *drm_format_info(u32 format) 337 { 338 const struct drm_format_info *info; 339 340 info = __drm_format_info(format); 341 WARN_ON(!info); 342 return info; 343 } 344 EXPORT_SYMBOL(drm_format_info); 345 346 /** 347 * drm_get_format_info - query information for a given framebuffer configuration 348 * @dev: DRM device 349 * @mode_cmd: metadata from the userspace fb creation request 350 * 351 * Returns: 352 * The instance of struct drm_format_info that describes the pixel format, or 353 * NULL if the format is unsupported. 354 */ 355 const struct drm_format_info * 356 drm_get_format_info(struct drm_device *dev, 357 const struct drm_mode_fb_cmd2 *mode_cmd) 358 { 359 const struct drm_format_info *info = NULL; 360 361 if (dev->mode_config.funcs->get_format_info) 362 info = dev->mode_config.funcs->get_format_info(mode_cmd); 363 364 if (!info) 365 info = drm_format_info(mode_cmd->pixel_format); 366 367 return info; 368 } 369 EXPORT_SYMBOL(drm_get_format_info); 370 371 /** 372 * drm_format_info_block_width - width in pixels of block. 373 * @info: pixel format info 374 * @plane: plane index 375 * 376 * Returns: 377 * The width in pixels of a block, depending on the plane index. 378 */ 379 unsigned int drm_format_info_block_width(const struct drm_format_info *info, 380 int plane) 381 { 382 if (!info || plane < 0 || plane >= info->num_planes) 383 return 0; 384 385 if (!info->block_w[plane]) 386 return 1; 387 return info->block_w[plane]; 388 } 389 EXPORT_SYMBOL(drm_format_info_block_width); 390 391 /** 392 * drm_format_info_block_height - height in pixels of a block 393 * @info: pixel format info 394 * @plane: plane index 395 * 396 * Returns: 397 * The height in pixels of a block, depending on the plane index. 398 */ 399 unsigned int drm_format_info_block_height(const struct drm_format_info *info, 400 int plane) 401 { 402 if (!info || plane < 0 || plane >= info->num_planes) 403 return 0; 404 405 if (!info->block_h[plane]) 406 return 1; 407 return info->block_h[plane]; 408 } 409 EXPORT_SYMBOL(drm_format_info_block_height); 410 411 /** 412 * drm_format_info_bpp - number of bits per pixel 413 * @info: pixel format info 414 * @plane: plane index 415 * 416 * Returns: 417 * The actual number of bits per pixel, depending on the plane index. 418 */ 419 unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane) 420 { 421 if (!info || plane < 0 || plane >= info->num_planes) 422 return 0; 423 424 return info->char_per_block[plane] * 8 / 425 (drm_format_info_block_width(info, plane) * 426 drm_format_info_block_height(info, plane)); 427 } 428 EXPORT_SYMBOL(drm_format_info_bpp); 429 430 /** 431 * drm_format_info_min_pitch - computes the minimum required pitch in bytes 432 * @info: pixel format info 433 * @plane: plane index 434 * @buffer_width: buffer width in pixels 435 * 436 * Returns: 437 * The minimum required pitch in bytes for a buffer by taking into consideration 438 * the pixel format information and the buffer width. 439 */ 440 uint64_t drm_format_info_min_pitch(const struct drm_format_info *info, 441 int plane, unsigned int buffer_width) 442 { 443 if (!info || plane < 0 || plane >= info->num_planes) 444 return 0; 445 446 return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane], 447 drm_format_info_block_width(info, plane) * 448 drm_format_info_block_height(info, plane)); 449 } 450 EXPORT_SYMBOL(drm_format_info_min_pitch); 451