From 983bcb4cbe259ca6b2e03a6133364681aff1b88b Mon Sep 17 00:00:00 2001 From: "AMD\\ramini" Date: Tue, 24 Nov 2020 17:08:44 -0500 Subject: [PATCH] drm/amd/display: Set FixRate bit in VSIF V3 [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 Reviewed-by: Anthony Koo Acked-by: Eryk Brol Signed-off-by: Alex Deucher --- drivers/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 2decdd8..4762273 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; -- 2.7.4