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drm/amd/display: power down eDP if eDP not present

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[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>
This commit is contained in:
Paul Hsieh 2023-03-07 21:04:28 +08:00 committed by Alex Deucher
parent e89d890c1b
commit 426714f89f
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/display/dc/link/link_detection.c
View File

@ -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;