diff options
| author | Stylon Wang <stylon.wang@amd.com> | 2021-07-20 10:58:19 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-07-23 10:09:40 -0400 |
| commit | 7a69ce40aeef448338b313d7a3ee21d2baf24c94 (patch) | |
| tree | c283ce8e0f5b72afb5863e25ca5522bed7b3d9d5 /drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | |
| parent | 1bece222eabeb3d8b10c5f2dadb03b6fb780b050 (diff) | |
drm/amd/display: Fix ASSR regression on embedded panels
[Why]
Regression found in some embedded panels traces back to the earliest
upstreamed ASSR patch. The changed code flow are causing problems
with some panels.
[How]
- Change ASSR enabling code while preserving original code flow
as much as possible
- Simplify the code on guarding with internal display flag
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=213779
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1620
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index cc62124b0b82..f56e061d35bc 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -1811,8 +1811,7 @@ bool perform_link_training_with_retries( */ panel_mode = DP_PANEL_MODE_DEFAULT; } - } else - panel_mode = DP_PANEL_MODE_DEFAULT; + } } #endif @@ -4643,7 +4642,10 @@ enum dp_panel_mode dp_get_panel_mode(struct dc_link *link) } } - if (link->dpcd_caps.panel_mode_edp) { + if (link->dpcd_caps.panel_mode_edp && + (link->connector_signal == SIGNAL_TYPE_EDP || + (link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT && + link->is_internal_display))) { return DP_PANEL_MODE_EDP; } |