drm/amd/display: Rearchitecture HDMI HPD (9a6995ce) · Commits · 戴 / test

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

+32 −0

Original line number	Diff line number	Diff line
		@@ -127,6 +127,8 @@ static bool program_hpd_filter(
		int delay_on_connect_in_ms = 0;
		int delay_on_disconnect_in_ms = 0;

		if (link->is_hpd_filter_disabled)
		return false;
		/* Verify feature is supported */
		switch (link->connector_signal) {
		case SIGNAL_TYPE_DVI_SINGLE_LINK:
		@@ -2346,3 +2348,33 @@ 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)
		{
		struct gpio *hpd;

		if (!link->is_hpd_filter_disabled) {
		link->is_hpd_filter_disabled = true;
		/* Obtain HPD handle */
		hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service);

		if (!hpd)
		return;

		/* Setup HPD filtering */
		if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) {
		struct gpio_hpd_config config;

		config.delay_on_connect = 0;
		config.delay_on_disconnect = 0;

		dal_irq_setup_hpd_filter(hpd, &config);

		dal_gpio_close(hpd);
		} else {
		ASSERT_CRITICAL(false);
		}
		/* Release HPD handle */
		dal_gpio_destroy_irq(&hpd);
		}
		}

+4 −0

Original line number	Diff line number	Diff line
		@@ -64,6 +64,8 @@ struct dc_link {
		enum signal_type connector_signal;
		enum dc_irq_source irq_source_hpd;
		enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse */
		bool is_hpd_filter_disabled;

		/* caps is the same as reported_link_cap. link_traing use
		* reported_link_cap. Will clean up. TODO
		*/
		@@ -195,6 +197,8 @@ 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);

		/*
		* DPCD access interfaces
		*/