drm/amd/display: only blank dp stream which will be powered off (8d9c07b0) · Commits · 戴 / test

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

+15 −10

Original line number	Diff line number	Diff line
		@@ -1238,7 +1238,7 @@ void dcn10_init_pipes(struct dc dc, struct dc_state context)

		void dcn10_init_hw(struct dc *dc)
		{
		int i;
		int i, j;
		struct abm *abm = dc->res_pool->abm;
		struct dmcu *dmcu = dc->res_pool->dmcu;
		struct dce_hwseq *hws = dc->hwseq;
		@@ -1328,14 +1328,6 @@ void dcn10_init_hw(struct dc *dc)
		uint8_t dpcd_power_state = '\0';
		enum dc_status status = DC_ERROR_UNEXPECTED;

		/* blank all dp streams before power off receiver,
		* this should only impact DP
		*/
		for (i = 0; i < dc->res_pool->stream_enc_count; i++) {
		dc->res_pool->stream_enc[i]->funcs->dp_blank(
		dc->res_pool->stream_enc[i]);
		}

		for (i = 0; i < dc->link_count; i++) {
		if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
		continue;
		@@ -1350,11 +1342,24 @@ void dcn10_init_hw(struct dc *dc)
		/* if any of the displays are lit up turn them off */
		status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
		&dpcd_power_state, sizeof(dpcd_power_state));
		if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0)
		if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
		/* blank dp stream before power off receiver*/
		if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
		unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc);

		for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
		if (fe == dc->res_pool->stream_enc[j]->id) {
		dc->res_pool->stream_enc[j]->funcs->dp_blank(
		dc->res_pool->stream_enc[j]);
		break;
		}
		}
		}
		dp_receiver_power_ctrl(dc->links[i], false);
		}
		}
		}
		}

		/* If taking control over from VBIOS, we may want to optimize our first
		* mode set, so we need to skip powering down pipes until we know which

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