git.openwrt.org Git - openwrt/staging/xback.git/blob

   1 From f5c7dd20b383a4ab8212736b37940a4339d80e33 Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Mon, 12 Apr 2021 17:27:43 +0100
   4 Subject: [PATCH] vc4/kms: vc4_plane: Support 2020 colourspace for yuv
   5  planes
   6
   7 https://gist.github.com/popcornmix/6b3e23103c60170b02b148e0ba5d6ed7
   8
   9 is the script used to generate the 601, 709 and 2020 colourspaces.
  10 I've regenetated the existing ones using script so it is reprocable
  11 but there are lsb dfferences compared to values here (copied from spec)
  12 whose origin is now lost.
  13
  14 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
  15 ---
  16  drivers/gpu/drm/vc4/vc4_plane.c | 19 ++++++++++---------
  17  drivers/gpu/drm/vc4/vc4_regs.h  | 18 ++++++++++++------
  18  2 files changed, 22 insertions(+), 15 deletions(-)
  19
  20 --- a/drivers/gpu/drm/vc4/vc4_plane.c
  21 +++ b/drivers/gpu/drm/vc4/vc4_plane.c
  22 @@ -644,10 +644,10 @@ static const u32 colorspace_coeffs[2][DR
  23                         SCALER_CSC1_ITR_R_709_3,
  24                         SCALER_CSC2_ITR_R_709_3,
  25                 }, {
  26 -                       /* BT2020. Not supported yet - copy 601 */
  27 -                       SCALER_CSC0_ITR_R_601_5,
  28 -                       SCALER_CSC1_ITR_R_601_5,
  29 -                       SCALER_CSC2_ITR_R_601_5,
  30 +                       /* BT2020 */
  31 +                       SCALER_CSC0_ITR_R_2020,
  32 +                       SCALER_CSC1_ITR_R_2020,
  33 +                       SCALER_CSC2_ITR_R_2020,
  34                 }
  35         }, {
  36                 /* Full range */
  37 @@ -662,10 +662,10 @@ static const u32 colorspace_coeffs[2][DR
  38                         SCALER_CSC1_ITR_R_709_3_FR,
  39                         SCALER_CSC2_ITR_R_709_3_FR,
  40                 }, {
  41 -                       /* BT2020. Not supported yet - copy JFIF */
  42 -                       SCALER_CSC0_JPEG_JFIF,
  43 -                       SCALER_CSC1_JPEG_JFIF,
  44 -                       SCALER_CSC2_JPEG_JFIF,
  45 +                       /* BT2020 */
  46 +                       SCALER_CSC0_ITR_R_2020_FR,
  47 +                       SCALER_CSC1_ITR_R_2020_FR,
  48 +                       SCALER_CSC2_ITR_R_2020_FR,
  49                 }
  50         }
  51  };
  52 @@ -1487,7 +1487,8 @@ struct drm_plane *vc4_plane_init(struct
  53
  54         drm_plane_create_color_properties(plane,
  55                                           BIT(DRM_COLOR_YCBCR_BT601) |
  56 -                                         BIT(DRM_COLOR_YCBCR_BT709),
  57 +                                         BIT(DRM_COLOR_YCBCR_BT709) |
  58 +                                         BIT(DRM_COLOR_YCBCR_BT2020),
  59                                           BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
  60                                           BIT(DRM_COLOR_YCBCR_FULL_RANGE),
  61                                           DRM_COLOR_YCBCR_BT709,
  62 --- a/drivers/gpu/drm/vc4/vc4_regs.h
  63 +++ b/drivers/gpu/drm/vc4/vc4_regs.h
  64 @@ -975,8 +975,10 @@ enum hvs_pixel_format {
  65  #define SCALER_CSC0_COEF_CR_OFS_SHIFT          0
  66  #define SCALER_CSC0_ITR_R_601_5                        0x00f00000
  67  #define SCALER_CSC0_ITR_R_709_3                        0x00f00000
  68 +#define SCALER_CSC0_ITR_R_2020                 0x00f00000
  69  #define SCALER_CSC0_JPEG_JFIF                  0x00000000
  70  #define SCALER_CSC0_ITR_R_709_3_FR             0x00000000
  71 +#define SCALER_CSC0_ITR_R_2020_FR              0x00000000
  72
  73  /* S2.8 contribution of Cb to Green */
  74  #define SCALER_CSC1_COEF_CB_GRN_MASK           VC4_MASK(31, 22)
  75 @@ -991,9 +993,11 @@ enum hvs_pixel_format {
  76  #define SCALER_CSC1_COEF_CR_BLU_MASK           VC4_MASK(1, 0)
  77  #define SCALER_CSC1_COEF_CR_BLU_SHIFT          0
  78  #define SCALER_CSC1_ITR_R_601_5                        0xe73304a8
  79 -#define SCALER_CSC1_ITR_R_709_3                        0xf2b784a8
  80 -#define SCALER_CSC1_JPEG_JFIF                  0xea34a400
  81 -#define SCALER_CSC1_ITR_R_709_3_FR             0xe23d0400
  82 +#define SCALER_CSC1_ITR_R_709_3                        0xf27784a8
  83 +#define SCALER_CSC1_ITR_R_2020                 0xf43594a8
  84 +#define SCALER_CSC1_JPEG_JFIF                  0xea349400
  85 +#define SCALER_CSC1_ITR_R_709_3_FR             0xf4388400
  86 +#define SCALER_CSC1_ITR_R_2020_FR              0xf5b6d400
  87
  88  /* S2.8 contribution of Cb to Red */
  89  #define SCALER_CSC2_COEF_CB_RED_MASK           VC4_MASK(29, 20)
  90 @@ -1004,10 +1008,12 @@ enum hvs_pixel_format {
  91  /* S2.8 contribution of Cb to Blue */
  92  #define SCALER_CSC2_COEF_CB_BLU_MASK           VC4_MASK(19, 10)
  93  #define SCALER_CSC2_COEF_CB_BLU_SHIFT          10
  94 -#define SCALER_CSC2_ITR_R_601_5                        0x00066204
  95 -#define SCALER_CSC2_ITR_R_709_3                        0x00072a1c
  96 -#define SCALER_CSC2_JPEG_JFIF                  0x000599c5
  97 +#define SCALER_CSC2_ITR_R_601_5                        0x00066604
  98 +#define SCALER_CSC2_ITR_R_709_3                        0x00072e1d
  99 +#define SCALER_CSC2_ITR_R_2020                 0x0006b624
 100 +#define SCALER_CSC2_JPEG_JFIF                  0x00059dc6
 101  #define SCALER_CSC2_ITR_R_709_3_FR             0x00064ddb
 102 +#define SCALER_CSC2_ITR_R_2020_FR              0x0005e5e2
 103
 104  #define SCALER_TPZ0_VERT_RECALC                        BIT(31)
 105  #define SCALER_TPZ0_SCALE_MASK                 VC4_MASK(28, 8)