diff options
| author | Nemesa Garg <nemesa.garg@intel.com> | 2026-06-23 15:12:35 +0530 |
|---|---|---|
| committer | Ankit Nautiyal <ankit.k.nautiyal@intel.com> | 2026-06-24 09:27:33 +0530 |
| commit | 16bc193d78b00a1ec4eee3aad5afce5724769972 (patch) | |
| tree | c404193aa0357f25b04c5f088768a8944ab1d7ac | |
| parent | ce7999a2722a8c85234fd778735f73dd1a5aa337 (diff) | |
drm/dp: Add max bpp delta computation constants
Define macros used for decoding DSC max bpp delta values
from the sink DPCD. This includes per-format masks for
RGB/YCbCr444 and YCbCr420, as well as definitions for delta
scaling and the YCbCr420 bit shift. Also add version_1 as
suffix to MAX_DELTA_BPP.
v2: Move constants under 0x6E register. [Ankit]
Add mask for Native 422 also. [Ankit]
v3: Rename _DSC_NATIVE4222 to _DSC_NATIVE_YCbCr422. [Ankit]
v4: Move Version_1 edit ti patch_1. [Ankit]
Add shift mask for native also. [sashiko]
Signed-off-by: Nemesa Garg <nemesa.garg@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20260623094236.1586318-4-nemesa.garg@intel.com
| -rw-r--r-- | include/drm/display/drm_dp.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h index 57e8143a1374..7154216e0aff 100644 --- a/include/drm/display/drm_dp.h +++ b/include/drm/display/drm_dp.h @@ -358,6 +358,10 @@ # define DP_DSC_RGB_YCbCr444_MAX_BPP_DELTA_MASK 0x1f # define DP_DSC_NATIVE_YCbCr420_MAX_BPP_DELTA_MASK 0xe0 +# define DP_DSC_BPP_DELTA_444 16 +# define DP_DSC_BPP_DELTA_420 12 +# define DP_DSC_BPP_DELTA_SHIFT_420 5 + #define DP_DSC_BITS_PER_PIXEL_INC 0x06F # define DP_DSC_BITS_PER_PIXEL_1_16 0x0 # define DP_DSC_BITS_PER_PIXEL_1_8 0x1 @@ -365,6 +369,9 @@ # define DP_DSC_BITS_PER_PIXEL_1_2 0x3 # define DP_DSC_BITS_PER_PIXEL_1_1 0x4 # define DP_DSC_BITS_PER_PIXEL_MASK 0x7 +# define DP_DSC_NATIVE_YCbCr422_MAX_BPP_DELTA_MASK 0x78 +# define DP_DSC_BPP_DELTA_NATIVE_SHIFT_422 3 +# define DP_DSC_BPP_DELTA_NATIVE_422 16 #define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */ # define DP_PSR_IS_SUPPORTED 1 |