LCOV - code coverage report
Current view: top level - drivers/gpu/drm - drm_fourcc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 25 64 39.1 %
Date: 2023-03-27 20:00:47 Functions: 6 9 66.7 %

          Line data    Source code
       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           0 : uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
      42             : {
      43           0 :         uint32_t fmt = DRM_FORMAT_INVALID;
      44             : 
      45           0 :         switch (bpp) {
      46             :         case 1:
      47           0 :                 if (depth == 1)
      48           0 :                         fmt = DRM_FORMAT_C1;
      49             :                 break;
      50             : 
      51             :         case 2:
      52           0 :                 if (depth == 2)
      53           0 :                         fmt = DRM_FORMAT_C2;
      54             :                 break;
      55             : 
      56             :         case 4:
      57           0 :                 if (depth == 4)
      58           0 :                         fmt = DRM_FORMAT_C4;
      59             :                 break;
      60             : 
      61             :         case 8:
      62           0 :                 if (depth == 8)
      63           0 :                         fmt = DRM_FORMAT_C8;
      64             :                 break;
      65             : 
      66             :         case 16:
      67           0 :                 switch (depth) {
      68             :                 case 15:
      69           0 :                         fmt = DRM_FORMAT_XRGB1555;
      70           0 :                         break;
      71             :                 case 16:
      72           0 :                         fmt = DRM_FORMAT_RGB565;
      73           0 :                         break;
      74             :                 default:
      75             :                         break;
      76             :                 }
      77             :                 break;
      78             : 
      79             :         case 24:
      80           0 :                 if (depth == 24)
      81           0 :                         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           0 :         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           0 : uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
     120             :                                      uint32_t bpp, uint32_t depth)
     121             : {
     122           0 :         uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth);
     123             : 
     124           0 :         if (dev->mode_config.quirk_addfb_prefer_host_byte_order) {
     125           0 :                 if (fmt == DRM_FORMAT_XRGB8888)
     126           0 :                         fmt = DRM_FORMAT_HOST_XRGB8888;
     127           0 :                 if (fmt == DRM_FORMAT_ARGB8888)
     128           0 :                         fmt = DRM_FORMAT_HOST_ARGB8888;
     129           0 :                 if (fmt == DRM_FORMAT_RGB565)
     130           0 :                         fmt = DRM_FORMAT_HOST_RGB565;
     131           0 :                 if (fmt == DRM_FORMAT_XRGB1555)
     132           0 :                         fmt = DRM_FORMAT_HOST_XRGB1555;
     133             :         }
     134             : 
     135           0 :         if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp &&
     136             :             fmt == DRM_FORMAT_XRGB2101010)
     137           0 :                 fmt = DRM_FORMAT_XBGR2101010;
     138             : 
     139           0 :         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          44 : 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       10503 :         for (i = 0; i < ARRAY_SIZE(formats); ++i) {
     318       10502 :                 if (formats[i].format == format)
     319         189 :                         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         146 : const struct drm_format_info *drm_format_info(u32 format)
     337             : {
     338             :         const struct drm_format_info *info;
     339             : 
     340         146 :         info = __drm_format_info(format);
     341         146 :         WARN_ON(!info);
     342         146 :         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          43 : drm_get_format_info(struct drm_device *dev,
     357             :                     const struct drm_mode_fb_cmd2 *mode_cmd)
     358             : {
     359          43 :         const struct drm_format_info *info = NULL;
     360             : 
     361          43 :         if (dev->mode_config.funcs->get_format_info)
     362           0 :                 info = dev->mode_config.funcs->get_format_info(mode_cmd);
     363             : 
     364          43 :         if (!info)
     365          43 :                 info = drm_format_info(mode_cmd->pixel_format);
     366             : 
     367          43 :         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          18 : unsigned int drm_format_info_block_width(const struct drm_format_info *info,
     380             :                                          int plane)
     381             : {
     382          18 :         if (!info || plane < 0 || plane >= info->num_planes)
     383             :                 return 0;
     384             : 
     385         411 :         if (!info->block_w[plane])
     386             :                 return 1;
     387          45 :         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          18 : unsigned int drm_format_info_block_height(const struct drm_format_info *info,
     400             :                                           int plane)
     401             : {
     402          18 :         if (!info || plane < 0 || plane >= info->num_planes)
     403             :                 return 0;
     404             : 
     405         411 :         if (!info->block_h[plane])
     406             :                 return 1;
     407          45 :         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           0 : unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane)
     420             : {
     421           0 :         if (!info || plane < 0 || plane >= info->num_planes)
     422             :                 return 0;
     423             : 
     424           0 :         return info->char_per_block[plane] * 8 /
     425           0 :                (drm_format_info_block_width(info, plane) *
     426           0 :                 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         219 : uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
     441             :                                    int plane, unsigned int buffer_width)
     442             : {
     443         219 :         if (!info || plane < 0 || plane >= info->num_planes)
     444             :                 return 0;
     445             : 
     446        1010 :         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);

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