From: Nemesa Garg <nemesa.garg@intel.com>
To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
dri-devel@lists.freedesktop.org
Cc: Nemesa Garg <nemesa.garg@intel.com>
Subject: [PATCH 1/2] drm/dp: Define DSC bpp delta DPCD fields
Date: Mon, 20 Apr 2026 16:56:10 +0530 [thread overview]
Message-ID: <20260420112611.1481530-2-nemesa.garg@intel.com> (raw)
In-Reply-To: <20260420112611.1481530-1-nemesa.garg@intel.com>
Add DP_DSC_MAX_BPP_DELTA and related field and mask helper
macros for RGB/YCbCr444 delta and YCbCr420 delta encoding.
Signed-off-by: Nemesa Garg <nemesa.garg@intel.com>
---
include/drm/display/drm_dp.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h
index 8b15d3eeb716..2afd33d90a0e 100644
--- a/include/drm/display/drm_dp.h
+++ b/include/drm/display/drm_dp.h
@@ -354,9 +354,15 @@
# define DP_DSC_20_PER_DP_DSC_SINK (1 << 1)
# define DP_DSC_24_PER_DP_DSC_SINK (1 << 2)
-#define DP_DSC_BITS_PER_PIXEL_INC 0x06F
+#define MIN_DSC_BPP_DELTA_444 16
+#define MIN_DSC_BPP_DELTA_420 12
+#define BPP_DELTA_SHIFT_420 5
+
+#define DP_DSC_MAX_BPP_DELTA 0x06E
# define DP_DSC_RGB_YCbCr444_MAX_BPP_DELTA_MASK 0x1f
# define DP_DSC_RGB_YCbCr420_MAX_BPP_DELTA_MASK 0xe0
+
+#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
# define DP_DSC_BITS_PER_PIXEL_1_4 0x2
--
2.25.1
next prev parent reply other threads:[~2026-04-20 11:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-20 11:26 [PATCH 0/2] DSC max delta bpp support Nemesa Garg
2026-04-20 11:26 ` Nemesa Garg [this message]
2026-04-21 6:34 ` [PATCH 1/2] drm/dp: Define DSC bpp delta DPCD fields Nautiyal, Ankit K
2026-04-20 11:26 ` [PATCH 2/2] drm/i915/dp: Decode DSC max delta bpp from sink DPCD Nemesa Garg
2026-04-21 10:50 ` Nautiyal, Ankit K
2026-04-20 22:34 ` ✓ CI.KUnit: success for DSC max delta bpp support Patchwork
2026-04-20 23:21 ` ✓ Xe.CI.BAT: " Patchwork
2026-04-21 2:15 ` ✗ Xe.CI.FULL: failure " Patchwork
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