Attachment 141087 Details for Bug 105880 – Add support for LVDS

[patch] Add support for LVDS

0001-drm-amdgpu-display-add-support-for-LVDS.patch (text/plain), 9.62 KB, created by Alex Deucher on 2018-08-14 21:01:08 UTC

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Creator: Alex Deucher

Created: 2018-08-14 21:01:08 UTC

Size: 9.62 KB

patch

obsolete

>From da275061a87d1a495af10251c9b7d648ff04de98 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Tue, 14 Aug 2018 14:53:52 -0500
>Subject: [PATCH] drm/amdgpu/display: add support for LVDS
>
>This adds support for LVDS displays.
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>---
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c  |  2 ++
> drivers/gpu/drm/amd/display/dc/core/dc_link.c      | 31 ++++++++++++++++++++
> .../gpu/drm/amd/display/dc/dce/dce_link_encoder.c  | 34 ++++++++++++++++++++++
> .../gpu/drm/amd/display/dc/dce/dce_link_encoder.h  |  7 +++++
> .../drm/amd/display/dc/dce/dce_stream_encoder.c    | 25 ++++++++++++++++
> .../gpu/drm/amd/display/dc/inc/hw/link_encoder.h   |  4 +++
> .../gpu/drm/amd/display/dc/inc/hw/stream_encoder.h |  4 +++
> drivers/gpu/drm/amd/display/include/signal_types.h |  5 ++++
> 8 files changed, 112 insertions(+)
>
>diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>index 971f9c06bad6..b54fbcc7b10c 100644
>--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>@@ -3376,6 +3376,8 @@ static int to_drm_connector_type(enum signal_type st)
> 		return DRM_MODE_CONNECTOR_HDMIA;
> 	case SIGNAL_TYPE_EDP:
> 		return DRM_MODE_CONNECTOR_eDP;
>+	case SIGNAL_TYPE_LVDS:
>+		return DRM_MODE_CONNECTOR_LVDS;
> 	case SIGNAL_TYPE_RGB:
> 		return DRM_MODE_CONNECTOR_VGA;
> 	case SIGNAL_TYPE_DISPLAY_PORT:
>diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
>index 981f7cbd31cc..dde63bfbaf1b 100644
>--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
>+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
>@@ -1087,6 +1087,9 @@ static bool construct(
> 					dal_irq_get_rx_source(hpd_gpio);
> 		}
> 		break;
>+	case CONNECTOR_ID_LVDS:
>+		link->connector_signal = SIGNAL_TYPE_LVDS;
>+		break;
> 	default:
> 		DC_LOG_WARNING("Unsupported Connector type:%d!\n", link->link_id.id);
> 		goto create_fail;
>@@ -1920,6 +1923,25 @@ static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
> 		dal_ddc_service_read_scdc_data(link->ddc);
> }
> 
>+static void enable_link_lvds(struct pipe_ctx *pipe_ctx)
>+{
>+	struct dc_stream_state *stream = pipe_ctx->stream;
>+	struct dc_link *link = stream->sink->link;
>+
>+	if (stream->phy_pix_clk == 0)
>+		stream->phy_pix_clk = stream->timing.pix_clk_khz;
>+
>+	memset(&stream->sink->link->cur_link_settings, 0,
>+			sizeof(struct dc_link_settings));
>+
>+	link->link_enc->funcs->enable_lvds_output(
>+			link->link_enc,
>+			pipe_ctx->clock_source->id,
>+			pipe_ctx->stream->signal,
>+			stream->phy_pix_clk);
>+
>+}
>+
> /****************************enable_link***********************************/
> static enum dc_status enable_link(
> 		struct dc_state *state,
>@@ -1943,6 +1965,10 @@ static enum dc_status enable_link(
> 		enable_link_hdmi(pipe_ctx);
> 		status = DC_OK;
> 		break;
>+	case SIGNAL_TYPE_LVDS:
>+		enable_link_lvds(pipe_ctx);
>+		status = DC_OK;
>+		break;
> 	case SIGNAL_TYPE_VIRTUAL:
> 		status = DC_OK;
> 		break;
>@@ -2492,6 +2518,11 @@ void core_link_enable_stream(
> 			(pipe_ctx->stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK) ?
> 			true : false);
> 
>+	if (dc_is_lvds_signal(pipe_ctx->stream->signal))
>+		pipe_ctx->stream_res.stream_enc->funcs->lvds_set_stream_attribute(
>+			pipe_ctx->stream_res.stream_enc,
>+			&stream->timing);
>+
> 	resource_build_info_frame(pipe_ctx);
> 	core_dc->hwss.update_info_frame(pipe_ctx);
> 
>diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
>index eff7d22d78fb..0b3ec4cc901b 100644
>--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
>+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
>@@ -102,6 +102,7 @@ static const struct link_encoder_funcs dce110_lnk_enc_funcs = {
> 	.enable_tmds_output = dce110_link_encoder_enable_tmds_output,
> 	.enable_dp_output = dce110_link_encoder_enable_dp_output,
> 	.enable_dp_mst_output = dce110_link_encoder_enable_dp_mst_output,
>+	.enable_lvds_output = dce110_link_encoder_enable_lvds_output,
> 	.disable_output = dce110_link_encoder_disable_output,
> 	.dp_set_lane_settings = dce110_link_encoder_dp_set_lane_settings,
> 	.dp_set_phy_pattern = dce110_link_encoder_dp_set_phy_pattern,
>@@ -955,6 +956,39 @@ void dce110_link_encoder_enable_tmds_output(
> 	}
> }
> 
>+/* TODO: still need depth or just pass in adjusted pixel clock? */
>+void dce110_link_encoder_enable_lvds_output(
>+	struct link_encoder *enc,
>+	enum clock_source_id clock_source,
>+	enum signal_type signal,
>+	uint32_t pixel_clock)
>+{
>+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
>+	struct bp_transmitter_control cntl = { 0 };
>+	enum bp_result result;
>+
>+	/* Enable the PHY */
>+	cntl.connector_obj_id = enc110->base.connector;
>+	cntl.action = TRANSMITTER_CONTROL_ENABLE;
>+	cntl.engine_id = enc->preferred_engine;
>+	cntl.transmitter = enc110->base.transmitter;
>+	cntl.pll_id = clock_source;
>+	cntl.signal = signal;
>+	cntl.lanes_number = 4;
>+
>+	cntl.hpd_sel = enc110->base.hpd_source;
>+
>+	cntl.pixel_clock = pixel_clock;
>+
>+	result = link_transmitter_control(enc110, &cntl);
>+
>+	if (result != BP_RESULT_OK) {
>+		DC_LOG_ERROR("%s: Failed to execute VBIOS command table!\n",
>+			__func__);
>+		BREAK_TO_DEBUGGER();
>+	}
>+}
>+
> /* enables DP PHY output */
> void dce110_link_encoder_enable_dp_output(
> 	struct link_encoder *enc,
>diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h
>index 347069461a22..087401bac13d 100644
>--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h
>+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h
>@@ -225,6 +225,13 @@ void dce110_link_encoder_enable_dp_mst_output(
> 	const struct dc_link_settings *link_settings,
> 	enum clock_source_id clock_source);
> 
>+/* enables LVDS PHY output */
>+void dce110_link_encoder_enable_lvds_output(
>+	struct link_encoder *enc,
>+	enum clock_source_id clock_source,
>+	enum signal_type signal,
>+	uint32_t pixel_clock);
>+
> /* disable PHY output */
> void dce110_link_encoder_disable_output(
> 	struct link_encoder *enc,
>diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
>index b139b4017820..8fbe5211c68f 100644
>--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
>+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
>@@ -674,6 +674,29 @@ static void dce110_stream_encoder_dvi_set_stream_attribute(
> 	dce110_stream_encoder_set_stream_attribute_helper(enc110, crtc_timing);
> }
> 
>+/* setup stream encoder in LVDS mode */
>+static void dce110_stream_encoder_lvds_set_stream_attribute(
>+	struct stream_encoder *enc,
>+	struct dc_crtc_timing *crtc_timing)
>+{
>+	struct dce110_stream_encoder *enc110 = DCE110STRENC_FROM_STRENC(enc);
>+	struct bp_encoder_control cntl = {0};
>+
>+	cntl.action = ENCODER_CONTROL_SETUP;
>+	cntl.engine_id = enc110->base.id;
>+	cntl.signal = SIGNAL_TYPE_LVDS;
>+	cntl.enable_dp_audio = false;
>+	cntl.pixel_clock = crtc_timing->pix_clk_khz;
>+	cntl.lanes_number = LANE_COUNT_FOUR;
>+
>+	if (enc110->base.bp->funcs->encoder_control(
>+			enc110->base.bp, &cntl) != BP_RESULT_OK)
>+		return;
>+
>+	ASSERT(crtc_timing->pixel_encoding == PIXEL_ENCODING_RGB);
>+	ASSERT(crtc_timing->display_color_depth == COLOR_DEPTH_888);
>+}
>+
> static void dce110_stream_encoder_set_mst_bandwidth(
> 	struct stream_encoder *enc,
> 	struct fixed31_32 avg_time_slots_per_mtp)
>@@ -1564,6 +1587,8 @@ static const struct stream_encoder_funcs dce110_str_enc_funcs = {
> 		dce110_stream_encoder_hdmi_set_stream_attribute,
> 	.dvi_set_stream_attribute =
> 		dce110_stream_encoder_dvi_set_stream_attribute,
>+	.lvds_set_stream_attribute =
>+		dce110_stream_encoder_lvds_set_stream_attribute,
> 	.set_mst_bandwidth =
> 		dce110_stream_encoder_set_mst_bandwidth,
> 	.update_hdmi_info_packets =
>diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h b/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h
>index cf6df2e7beb2..881cc4079afe 100644
>--- a/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h
>+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h
>@@ -131,6 +131,10 @@ struct link_encoder_funcs {
> 	void (*enable_dp_mst_output)(struct link_encoder *enc,
> 		const struct dc_link_settings *link_settings,
> 		enum clock_source_id clock_source);
>+	void (*enable_lvds_output)(struct link_encoder *enc,
>+		enum clock_source_id clock_source,
>+		enum signal_type signal,
>+		uint32_t pixel_clock);
> 	void (*disable_output)(struct link_encoder *link_enc,
> 		enum signal_type signal);
> 	void (*dp_set_lane_settings)(struct link_encoder *enc,
>diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h b/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h
>index cfa7ec9517ae..53a9b64df11a 100644
>--- a/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h
>+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h
>@@ -101,6 +101,10 @@ struct stream_encoder_funcs {
> 		struct dc_crtc_timing *crtc_timing,
> 		bool is_dual_link);
> 
>+	void (*lvds_set_stream_attribute)(
>+		struct stream_encoder *enc,
>+		struct dc_crtc_timing *crtc_timing);
>+
> 	void (*set_mst_bandwidth)(
> 		struct stream_encoder *enc,
> 		struct fixed31_32 avg_time_slots_per_mtp);
>diff --git a/drivers/gpu/drm/amd/display/include/signal_types.h b/drivers/gpu/drm/amd/display/include/signal_types.h
>index 199c5db67cbc..03476b142d8e 100644
>--- a/drivers/gpu/drm/amd/display/include/signal_types.h
>+++ b/drivers/gpu/drm/amd/display/include/signal_types.h
>@@ -68,6 +68,11 @@ static inline bool dc_is_embedded_signal(enum signal_type signal)
> 	return (signal == SIGNAL_TYPE_EDP || signal == SIGNAL_TYPE_LVDS);
> }
> 
>+static inline bool dc_is_lvds_signal(enum signal_type signal)
>+{
>+	return (signal == SIGNAL_TYPE_LVDS);
>+}
>+
> static inline bool dc_is_dvi_signal(enum signal_type signal)
> {
> 	switch (signal) {
>-- 
>2.13.6
>

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