target/linux/layerscape/patches-5.4/805-display-0041-drm-fourcc-add-a-10bits-fully-packed-variant-of-NV12.patch

   1 From 3ef66853a02133244bde79b165d8e5063def5ef4 Mon Sep 17 00:00:00 2001
   2 From: Randy Li <ayaka@soulik.info>
   3 Date: Thu, 10 Jan 2019 03:57:10 +0800
   4 Subject: [PATCH] drm/fourcc: add a 10bits fully packed variant of NV12
   5
   6 This pixel format is a fully packed and 10bits variant of NV12.
   7 A luma pixel would take 10bits in memory, without any
   8 filled bits between pixels in a stride.
   9
  10 Signed-off-by: Randy Li <ayaka@soulik.info>
  11 Signed-off-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
  12 ---
  13  drivers/gpu/drm/drm_fourcc.c  | 3 +++
  14  include/uapi/drm/drm_fourcc.h | 8 ++++++++
  15  2 files changed, 11 insertions(+)
  16
  17 --- a/drivers/gpu/drm/drm_fourcc.c
  18 +++ b/drivers/gpu/drm/drm_fourcc.c
  19 @@ -261,6 +261,9 @@ const struct drm_format_info *__drm_form
  20                 { .format = DRM_FORMAT_P016,            .depth = 0,  .num_planes = 2,
  21                   .char_per_block = { 2, 4, 0 }, .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 },
  22                   .hsub = 2, .vsub = 2, .is_yuv = true},
  23 +               { .format = DRM_FORMAT_NV12_10LE40,     .depth = 0,  .num_planes = 2,
  24 +                 .char_per_block = { 5, 5, 0 }, .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 },
  25 +                 .hsub = 2, .vsub = 2, .is_yuv = true },
  26                 { .format = DRM_FORMAT_P210,            .depth = 0,
  27                   .num_planes = 2, .char_per_block = { 2, 4, 0 },
  28                   .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 }, .hsub = 2,
  29 --- a/include/uapi/drm/drm_fourcc.h
  30 +++ b/include/uapi/drm/drm_fourcc.h
  31 @@ -236,6 +236,14 @@ extern "C" {
  32  #define DRM_FORMAT_NV61                fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
  33  #define DRM_FORMAT_NV24                fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
  34  #define DRM_FORMAT_NV42                fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
  35 +/*
  36 + * A fully packed  2 plane YCbCr
  37 + * Y1 0-9, Y2 10-19, Y3 20-29, Y4 20-39
  38 + * ....
  39 + * U1V1: 0-19, U2V2: 20-39
  40 + */
  41 +#define DRM_FORMAT_NV12_10LE40 fourcc_code('R', 'K', '2', '0') /* 2x2 subsampled Cr:Cb plane */
  42 +
  43
  44  /*
  45   * 2 plane YCbCr MSB aligned