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drm/amd/display: Allow individual control of eDP hotplug support

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[Why]
Second eDP can send display off notification through HPD
but DC isn't hooked up to handle. Some primary eDP panels
will toggle on/off incorrectly if it's enabled generically.

[How]
Extend the debug option to allow individually enabling hotplug
either the first eDP or the second eDP in a dual eDP system.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Derek Lai <Derek.Lai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Derek Lai 2022-05-05 17:59:49 +08:00 committed by Alex Deucher
parent 49947b906a
commit ab144f0b4a
2 changed files with 20 additions and 3 deletions
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21
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -1605,8 +1605,25 @@ static bool dc_link_construct_legacy(struct dc_link *link,
if (link->hpd_gpio) {
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);
switch (link->dc->config.allow_edp_hotplug_detection) {
case 1: // only the 1st eDP handles hotplug
if (link->link_index == 0)
link->irq_source_hpd_rx =
dal_irq_get_rx_source(link->hpd_gpio);
else
link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
break;
case 2: // only the 2nd eDP handles hotplug
if (link->link_index == 1)
link->irq_source_hpd_rx =
dal_irq_get_rx_source(link->hpd_gpio);
else
link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
break;
default:
break;
}
}
break;

2
drivers/gpu/drm/amd/display/dc/dc.h
View File

@ -329,7 +329,7 @@ struct dc_config {
bool disable_dmcu;
bool enable_4to1MPC;
bool enable_windowed_mpo_odm;
bool allow_edp_hotplug_detection;
uint32_t allow_edp_hotplug_detection;
bool clamp_min_dcfclk;
uint64_t vblank_alignment_dto_params;
uint8_t vblank_alignment_max_frame_time_diff;