Commit 40dd6bd3 authored by Hersen Wu's avatar Hersen Wu Committed by Alex Deucher
Browse files

drm/amd/display: Linux Set/Read link rate and lane count through debugfs 



expose dc function to be called by linux dm

Signed-off-by: default avatarHersen Wu <hersenxs.wu@amd.com>
Reviewed-by: default avatarSun peng Li <Sunpeng.Li@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 1811a51f

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

+65 −0
Original line number Diff line number Diff line
@@ -384,6 +384,71 @@ void dc_stream_set_static_screen_events(struct dc *dc, 
	dc->hwss.set_static_screen_control(pipes_affected, num_pipes_affected, events);

}



void dc_link_set_drive_settings(struct dc *dc,

				struct link_training_settings *lt_settings,

				const struct dc_link *link)

{



	int i;



	for (i = 0; i < dc->link_count; i++) {

		if (dc->links[i] == link)

			break;

	}



	if (i >= dc->link_count)

		ASSERT_CRITICAL(false);



	dc_link_dp_set_drive_settings(dc->links[i], lt_settings);

}



void dc_link_perform_link_training(struct dc *dc,

				   struct dc_link_settings *link_setting,

				   bool skip_video_pattern)

{

	int i;



	for (i = 0; i < dc->link_count; i++)

		dc_link_dp_perform_link_training(

			dc->links[i],

			link_setting,

			skip_video_pattern);

}



void dc_link_set_preferred_link_settings(struct dc *dc,

					 struct dc_link_settings *link_setting,

					 struct dc_link *link)

{

	link->preferred_link_setting = *link_setting;

	dp_retrain_link_dp_test(link, link_setting, false);

}



void dc_link_enable_hpd(const struct dc_link *link)

{

	dc_link_dp_enable_hpd(link);

}



void dc_link_disable_hpd(const struct dc_link *link)

{

	dc_link_dp_disable_hpd(link);

}





void dc_link_set_test_pattern(struct dc_link *link,

			      enum dp_test_pattern test_pattern,

			      const struct link_training_settings *p_link_settings,

			      const unsigned char *p_custom_pattern,

			      unsigned int cust_pattern_size)

{

	if (link != NULL)

		dc_link_dp_set_test_pattern(

			link,

			test_pattern,

			p_link_settings,

			p_custom_pattern,

			cust_pattern_size);

}



static void destruct(struct dc *dc)

{

	dc_release_state(dc->current_state);

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

+17 −0
Original line number Diff line number Diff line
@@ -214,6 +214,23 @@ void dc_link_enable_hpd_filter(struct dc_link *link, bool enable); 
 * DPCD access interfaces

 */



void dc_link_set_drive_settings(struct dc *dc,

				struct link_training_settings *lt_settings,

				const struct dc_link *link);

void dc_link_perform_link_training(struct dc *dc,

				   struct dc_link_settings *link_setting,

				   bool skip_video_pattern);

void dc_link_set_preferred_link_settings(struct dc *dc,

					 struct dc_link_settings *link_setting,

					 struct dc_link *link);

void dc_link_enable_hpd(const struct dc_link *link);

void dc_link_disable_hpd(const struct dc_link *link);

void dc_link_set_test_pattern(struct dc_link *link,

			enum dp_test_pattern test_pattern,

			const struct link_training_settings *p_link_settings,

			const unsigned char *p_custom_pattern,

			unsigned int cust_pattern_size);



bool dc_submit_i2c(

		struct dc *dc,

		uint32_t link_index,

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