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drm/amd/display: add config option for eDP hotplug detection

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[Why]
Some custom platforms use eDP hotplug events to notify panel
capability changes that should be reported

[How]
Add a DC config option that unblocks eDP hotplug events

Signed-off-by: Yi-Ling Chen <Yi-Ling.Chen2@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yi-Ling Chen
2021-06-01 03:21:47 +08:00
committed by Alex Deucher
parent 2631ac1ac3
commit 5ab991ba34
2 changed files with 7 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@@ -904,9 +904,10 @@ static bool dc_link_detect_helper(struct dc_link *link,
if (dc_is_virtual_signal(link->connector_signal))
return false;
if ((link->connector_signal == SIGNAL_TYPE_LVDS ||
link->connector_signal == SIGNAL_TYPE_EDP) &&
link->local_sink) {
if (((link->connector_signal == SIGNAL_TYPE_LVDS ||
link->connector_signal == SIGNAL_TYPE_EDP) &&
(!link->dc->config.allow_edp_hotplug_detection)) &&
link->local_sink) {
// need to re-write OUI and brightness in resume case
if (link->connector_signal == SIGNAL_TYPE_EDP) {
dpcd_set_source_specific_data(link);
@@ -1501,7 +1502,8 @@ static bool dc_link_construct(struct dc_link *link,
link->connector_signal = SIGNAL_TYPE_EDP;
if (link->hpd_gpio) {
link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
if (!link->dc->config.allow_edp_hotplug_detection)
link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
link->irq_source_hpd_rx =
dal_irq_get_rx_source(link->hpd_gpio);
}

1
drivers/gpu/drm/amd/display/dc/dc.h
View File

@@ -303,6 +303,7 @@ struct dc_config {
bool multi_mon_pp_mclk_switch;
bool disable_dmcu;
bool enable_4to1MPC;
bool allow_edp_hotplug_detection;
#if defined(CONFIG_DRM_AMD_DC_DCN)
bool clamp_min_dcfclk;
#endif