From: "AMD\\ramini" <reza.am...@amd.com>
[Why]
Signal FreeSync display that we are in Fixed Rate mode, and
expand the FreeSync range to 1024.
[How]
Set the new bit in SB16:bit0, and augment the min and max
refresh rate with 2 extra bits.
Signed-off-by: AMD\ramini <reza.am...@amd.com>
Reviewed-by: Anthony Koo <anthony....@amd.com>
Acked-by: Eryk Brol <eryk.b...@amd.com>
---
.../gpu/drm/amd/display/modules/freesync/freesync.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index 2decdd8a5e20..4762273b5bb9 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -610,6 +610,7 @@ static void build_vrr_infopacket_data_v3(const struct
mod_vrr_params *vrr,
min_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh
:
(vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? min_refresh
:
+ (vrr->state == VRR_STATE_INACTIVE) ? min_refresh :
max_refresh; // Non-fs case, program nominal range
max_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh
:
@@ -622,11 +623,14 @@ static void build_vrr_infopacket_data_v3(const struct
mod_vrr_params *vrr,
/* PB8 = FreeSync Maximum refresh rate (Hz) */
infopacket->sb[8] = max_programmed & 0xFF;
- /* PB11 : MSB FreeSync Minimum refresh rate [Hz] - bits 15:8 */
- infopacket->sb[11] = (min_programmed >> 8) & 0xFF;
+ /* PB11 : MSB FreeSync Minimum refresh rate [Hz] - bits 9:8 */
+ infopacket->sb[11] = (min_programmed >> 8) & 0x03;
- /* PB12 : MSB FreeSync Maximum refresh rate [Hz] - bits 15:8 */
- infopacket->sb[12] = (max_programmed >> 8) & 0xFF;
+ /* PB12 : MSB FreeSync Maximum refresh rate [Hz] - bits 9:8 */
+ infopacket->sb[12] = (max_programmed >> 8) & 0x03;
+
+ /* PB16 : Reserved bits 7:1, FixedRate bit 0 */
+ infopacket->sb[16] = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? 1 : 0;
//FreeSync HDR
infopacket->sb[9] = 0;
--
2.25.1
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