From: Yi-Ling Chen <yi-ling.ch...@amd.com>
[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.ch...@amd.com>
Reviewed-by: Aric Cyr <aric....@amd.com>
Acked-by: Anson Jacob <anson.ja...@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 10 ++++++----
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 0f91280883a6..33e83c033284 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -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);
}
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h
b/drivers/gpu/drm/amd/display/dc/dc.h
index a70697898025..6470eee8e212 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -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
--
2.25.1
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