Commit 90bb21cb authored by Muhammad Ansari's avatar Muhammad Ansari Committed by Alex Deucher
Browse files

drm/amd/display: Helper function for ALPM initialization 



[WHY]
Needed a helper function for ALPM DPCD initialization

[HOW]
Refactoring to put ALPM initialization in a helper function

Reviewed-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Acked-by: default avatarSolomon Chiu <solomon.chiu@amd.com>
Signed-off-by: default avatarMuhammad Ansari <muansari@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 8a076bbc

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

+17 −10
Original line number Diff line number Diff line
@@ -2734,6 +2734,22 @@ static void enable_link_lvds(struct pipe_ctx *pipe_ctx) 


}



bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable)

{

	bool ret = false;

	union dpcd_alpm_configuration alpm_config;



	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {

		memset(&alpm_config, 0, sizeof(alpm_config));



		alpm_config.bits.ENABLE = (enable ? true : false);

		ret = dm_helpers_dp_write_dpcd(link->ctx, link,

				DP_RECEIVER_ALPM_CONFIG, &alpm_config.raw,

				sizeof(alpm_config.raw));

	}

	return ret;

}



/****************************enable_link***********************************/

static enum dc_status enable_link(

		struct dc_state *state,
@@ -3228,7 +3244,6 @@ bool dc_link_setup_psr(struct dc_link *link, 
	unsigned int panel_inst;

	/* updateSinkPsrDpcdConfig*/

	union dpcd_psr_configuration psr_configuration;

	union dpcd_alpm_configuration alpm_configuration;

	union dpcd_sink_active_vtotal_control_mode vtotal_control = {0};



	psr_context->controllerId = CONTROLLER_ID_UNDEFINED;
@@ -3284,15 +3299,7 @@ bool dc_link_setup_psr(struct dc_link *link, 
		sizeof(psr_configuration.raw));



	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {

		memset(&alpm_configuration, 0, sizeof(alpm_configuration));



		alpm_configuration.bits.ENABLE = 1;

		dm_helpers_dp_write_dpcd(

			link->ctx,

			link,

			DP_RECEIVER_ALPM_CONFIG,

			&alpm_configuration.raw,

			sizeof(alpm_configuration.raw));

		dc_power_alpm_dpcd_enable(link, true);

		psr_context->su_granularity_required =

			psr_config->su_granularity_required;

		psr_context->su_y_granularity =

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

+2 −0
Original line number Diff line number Diff line
@@ -320,6 +320,8 @@ bool dc_link_setup_psr(struct dc_link *dc_link, 
		const struct dc_stream_state *stream, struct psr_config *psr_config,

		struct psr_context *psr_context);



bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable);



void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency);



void dc_link_blank_all_dp_displays(struct dc *dc);