diff options
| author | Paul Hsieh <Paul.Hsieh@amd.com> | 2023-03-07 21:04:28 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-03-22 00:59:29 -0400 |
| commit | 426714f89f7081ce8bf83546219eed6ea1511891 (patch) | |
| tree | c524937b630ad993b657b2b36d1f737314f2424d /drivers/gpu/drm/amd/display/dc | |
| parent | e89d890c1b4a29fd1871f9ce21e9a94720a10e98 (diff) | |
drm/amd/display: power down eDP if eDP not present
[Why]
When init, driver will power up eDP to check eDP
present or not. If eDP not present, driver doesn't
power off eDP VDD cause power consumption.
[How]
If eDP is not present when detection, power off eDP
VDD.
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Paul Hsieh <Paul.Hsieh@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/link_detection.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index 67addedd8956..a131e30fd7d6 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -1227,6 +1227,11 @@ bool link_detect_connection_type(struct dc_link *link, enum dc_connection_type * /* TODO: need to do the actual detection */ } else { *type = dc_connection_none; + if (link->connector_signal == SIGNAL_TYPE_EDP) { + /* eDP is not connected, power down it */ + if (!link->dc->config.edp_no_power_sequencing) + link->dc->hwss.edp_power_control(link, false); + } } return true; |