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drm/amd/display: Disable GSL when enabling phantom pipe 

[Description]
When enabling phantom pipe on a pipe that was previously
using immediate flip, we have to disable GSL or this will
prevent the update from taking place right away on the phantom
pipe when we enable it in FW

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alvin Lee 2022-09-20 19:26:27 -04:00 committed by Alex Deucher
parent dfb3367bd0
commit 40169e2f37
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c
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@ -79,6 +79,8 @@ void hubp32_phantom_hubp_post_enable(struct hubp *hubp)
uint32_t reg_val;
struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);
/* For phantom pipe enable, disable GSL */
REG_UPDATE(DCSURF_FLIP_CONTROL2, SURFACE_GSL_ENABLE, 0);
REG_UPDATE(DCHUBP_CNTL, HUBP_BLANK_EN, 1);
reg_val = REG_READ(DCHUBP_CNTL);
if (reg_val) {