[PATCH 02/17] drm/amd/display: Set FixRate bit in VSIF V3

[Eryk Brol]

From: "AMD\\ramini" <Reza.Amini at 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.Amini at amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo at amd.com>
Acked-by: Eryk Brol <eryk.brol at 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