Commit ab144f0b authored by Derek Lai's avatar Derek Lai Committed by Alex Deucher
Browse files

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



[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: default avatarNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: default avatarDerek Lai <Derek.Lai@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 49947b90

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+19 −2
Original line number Diff line number Diff line
@@ -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;



			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;

drivers/gpu/drm/amd/display/dc/dc.h

+1 −1
Original line number Diff line number Diff line
@@ -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;