Commit 11fffe45 authored by John Barberiz's avatar John Barberiz Committed by Alex Deucher
Browse files

drm/amd/display: Add passive dongle support for HPD Rearch 



Add HPD delay timer support to
1. Single/dual link DVI.
2. DP to HDMI passive dongle
3. DP to DVI passive dongle.

Signed-off-by: default avatarJohn Barberiz <jbarberi@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 88ac3dda

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

+5 −2
Original line number Diff line number Diff line
@@ -2358,11 +2358,14 @@ void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable) 
	core_dc->hwss.set_avmute(pipe_ctx, enable);

}



void dc_link_disable_hpd_filter(struct dc_link *link)

void dc_link_enable_hpd_filter(struct dc_link *link, bool enable)

{

	struct gpio *hpd;



	if (!link->is_hpd_filter_disabled) {

	if (enable) {

		link->is_hpd_filter_disabled = false;

		program_hpd_filter(link);

	} else {

		link->is_hpd_filter_disabled = true;

		/* Obtain HPD handle */

		hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service);

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

+1 −1
Original line number Diff line number Diff line
@@ -197,7 +197,7 @@ bool dc_link_dp_set_test_pattern( 
	const unsigned char *p_custom_pattern,

	unsigned int cust_pattern_size);



void dc_link_disable_hpd_filter(struct dc_link *link);

void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);



/*

 * DPCD access interfaces