[PATCH 24/28] drm/amd/display: Add fallback configuration when set DRR

[Hamza Mahfooz]

From: Rodrigo Siqueira <rodrigo.sique...@amd.com>

Set OTG/OPTC parameter to 0 if failed to set DRR.

Acked-by: Hamza Mahfooz <hamza.mahf...@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
 .../gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c    | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c 
b/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c
index 52eab8fccb7f..c4f0e1951427 100644
--- a/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c
@@ -293,9 +293,16 @@ static void optc32_set_drr(
                }
 
                optc->funcs->set_vtotal_min_max(optc, 
params->vertical_total_min - 1, params->vertical_total_max - 1);
-       }
+               optc32_setup_manual_trigger(optc);
+       } else {
+               REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
+                               OTG_SET_V_TOTAL_MIN_MASK, 0,
+                               OTG_V_TOTAL_MIN_SEL, 0,
+                               OTG_V_TOTAL_MAX_SEL, 0,
+                               OTG_FORCE_LOCK_ON_EVENT, 0);
 
-       optc32_setup_manual_trigger(optc);
+               optc->funcs->set_vtotal_min_max(optc, 0, 0);
+       }
 }
 
 static struct timing_generator_funcs dcn32_tg_funcs = {
-- 
2.44.0