[PATCH 25/28] drm/amd/display: Add fallback configuration for set DRR in DCN10

[Hamza Mahfooz]

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

Set OTG/OPTC parameters to 0 if something goes wrong on DCN10.

Acked-by: Hamza Mahfooz <hamza.mahf...@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
 .../drm/amd/display/dc/optc/dcn10/dcn10_optc.c    | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.c 
b/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.c
index f109a101d84f..5574bc628053 100644
--- a/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.c
@@ -945,10 +945,19 @@ void optc1_set_drr(
                                OTG_FORCE_LOCK_ON_EVENT, 0,
                                OTG_SET_V_TOTAL_MIN_MASK_EN, 0,
                                OTG_SET_V_TOTAL_MIN_MASK, 0);
-       }
 
-       // Setup manual flow control for EOF via TRIG_A
-       optc->funcs->setup_manual_trigger(optc);
+               // Setup manual flow control for EOF via TRIG_A
+               optc->funcs->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);
+
+               optc->funcs->set_vtotal_min_max(optc, 0, 0);
+       }
 }
 
 void optc1_set_vtotal_min_max(struct timing_generator *optc, int vtotal_min, 
int vtotal_max)
-- 
2.44.0