Commit 724a4b40 authored by Chris Park's avatar Chris Park Committed by Alex Deucher
Browse files

drm/amd/display: Implement HDMI Read Request 



[Why]
Read Request provides alterative method to polling to
the HDMI sinks that support it.

[How]
Implement Read Request where interrupt can be generated
by the sink.

Reviewed-by: default avatarJoshua Aberback <joshua.aberback@amd.com>
Signed-off-by: default avatarChris Park <chris.park@amd.com>
Signed-off-by: default avatarZaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: default avatarMark Broadworth <mark.broadworth@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent f53d0f48

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

+1 −0
Original line number Diff line number Diff line
@@ -1436,6 +1436,7 @@ struct dc_scratch_space { 
	enum signal_type connector_signal;

	enum dc_irq_source irq_source_hpd;

	enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse  */

	enum dc_irq_source irq_source_read_request;/* Read Request */



	bool is_hpd_filter_disabled;

	bool dp_ss_off;

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

+1 −0
Original line number Diff line number Diff line
@@ -210,6 +210,7 @@ struct dc_edid_caps { 


	bool edid_hdmi;

	bool hdr_supported;

	bool rr_capable;



	struct dc_panel_patch panel_patch;

};

drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c

+14 −0
Original line number Diff line number Diff line
@@ -411,6 +411,20 @@ enum dc_irq_source dal_irq_get_rx_source( 
	}

}



enum dc_irq_source dal_irq_get_read_request(

	const struct gpio *irq)

{

	enum gpio_id id = dal_gpio_get_id(irq);



	switch (id) {

	case GPIO_ID_HPD:

		return (enum dc_irq_source)(DC_IRQ_SOURCE_DCI2C_RR_DDC1 +

			dal_gpio_get_enum(irq));

	default:

		return DC_IRQ_SOURCE_INVALID;

	}

}



enum gpio_result dal_irq_setup_hpd_filter(

	struct gpio *irq,

	struct gpio_hpd_config *config)

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

+7 −0
Original line number Diff line number Diff line
@@ -168,6 +168,13 @@ enum dc_irq_source { 
	DC_IRQ_SOURCE_DC5_VLINE2,

	DC_IRQ_SOURCE_DC6_VLINE2,



	DC_IRQ_SOURCE_DCI2C_RR_DDC1,

	DC_IRQ_SOURCE_DCI2C_RR_DDC2,

	DC_IRQ_SOURCE_DCI2C_RR_DDC3,

	DC_IRQ_SOURCE_DCI2C_RR_DDC4,

	DC_IRQ_SOURCE_DCI2C_RR_DDC5,

	DC_IRQ_SOURCE_DCI2C_RR_DDC6,



	DAL_IRQ_SOURCES_NUMBER

};

drivers/gpu/drm/amd/display/dc/link/link_factory.c

+4 −0
Original line number Diff line number Diff line
@@ -464,6 +464,7 @@ static bool construct_phy(struct dc_link *link, 


	link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;

	link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID;

	link->irq_source_read_request = DC_IRQ_SOURCE_INVALID;

	link->link_status.dpcd_caps = &link->dpcd_caps;



	link->dc = init_params->dc;
@@ -514,6 +515,9 @@ static bool construct_phy(struct dc_link *link, 
	case CONNECTOR_ID_HDMI_TYPE_A:

		link->connector_signal = SIGNAL_TYPE_HDMI_TYPE_A;



		if (link->hpd_gpio)

			link->irq_source_read_request =

					dal_irq_get_read_request(link->hpd_gpio);

		break;

	case CONNECTOR_ID_SINGLE_LINK_DVID:

	case CONNECTOR_ID_SINGLE_LINK_DVII: