mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-08-23 10:45:57 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/dp: Add max bpp delta computation constants

Browse Source 
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
This commit is contained in:
Nemesa Garg
2026-06-23 15:12:35 +05:30
committed by Ankit Nautiyal
parent ce7999a272
commit 16bc193d78
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
include/drm/display/drm_dp.h
View File

@@ -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