On 3/13/2026 5:22 PM, Ville Syrjälä wrote:
On Wed, Mar 11, 2026 at 05:05:56PM +0530, Ankit Nautiyal wrote:
Add additional DPCDs required to be configured to support VRR with Panel
Replay. These DPCDs are specifically required for configuring Adaptive Sync
SDP and are introduced in DP v2.1.
v2:
- Correct the shift for the bits. (Ville)
- Add DP_PR_ prefix for the PR-related fields.
Signed-off-by: Ankit Nautiyal <[email protected]>
---
include/drm/display/drm_dp.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h
index 8d172863eba3..e6752a92d5dc 100644
--- a/include/drm/display/drm_dp.h
+++ b/include/drm/display/drm_dp.h
@@ -775,6 +775,15 @@
# define DP_PANEL_REPLAY_SU_Y_GRANULARITY_EXTENDED_VAL_SEL_MASK (0xf << 3)
# define DP_PANEL_REPLAY_SU_REGION_SCANLINE_CAPTURE (1 << 7)
+#define PANEL_REPLAY_CONFIG3 0x11a /* DP 2.1 */
+# define DP_PR_AS_SDP_SETUP_TIME_SHIFT 6
+# define DP_PR_AS_SDP_SETUP_TIME_MASK (3 <<
DP_PR_AS_SDP_SETUP_TIME_SHIFT)
+# define DP_PR_AS_SDP_SETUP_TIME_T1 0
+# define DP_PR_AS_SDP_SETUP_TIME_DYNAMIC 1 /* DP 2.1 Table 2-227
*/
+# define DP_PR_AS_SDP_SETUP_TIME_T2 2
The usual rule in drm_dp.h seems to be to define the values
as already shifted.
Hmm.. I think I wanted to represent the 3 setup time config with 0, 1 ,2
which I am using later in switch case.
But to be consistent with the file, I will define the values as already
shifted, we can still use them in switch case I suppose.
Regards,
Ankit
+# define DP_PR_AS_SDP_SETUP_TIME(t) (((t) <<
DP_PR_AS_SDP_SETUP_TIME_SHIFT) & \
+
DP_PR_AS_SDP_SETUP_TIME_MASK)
+
#define DP_PAYLOAD_ALLOCATE_SET 0x1c0
#define DP_PAYLOAD_ALLOCATE_START_TIME_SLOT 0x1c1
#define DP_PAYLOAD_ALLOCATE_TIME_SLOT_COUNT 0x1c2
--
2.45.2
