Commit 99267ce7 authored by Eric Bernstein's avatar Eric Bernstein Committed by Alex Deucher
Browse files

drm/amd/display: Stereo 3D support in VSC 



[Why]
Need to add strere 3D information in VSC

[How]
Update mod_build_vsc_infopacket with stereo info

Signed-off-by: default avatarEric Bernstein <eric.bernstein@amd.com>
Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2806aca6

drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c

+54 −4
Original line number Diff line number Diff line
@@ -48,9 +48,12 @@ static void mod_build_vsc_infopacket(const struct dc_stream_state *stream, 
	unsigned int i;

	unsigned int pixelEncoding = 0;

	unsigned int colorimetryFormat = 0;

	bool stereo3dSupport = false;



	if (stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE && stream->view_format != VIEW_3D_FORMAT_NONE)

	if (stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE && stream->view_format != VIEW_3D_FORMAT_NONE) {

		vscPacketRevision = 1;

		stereo3dSupport = true;

	}



	/*VSC packet set to 2 when DP revision >= 1.2*/

	if (stream->psr_version != 0)
@@ -94,12 +97,59 @@ static void mod_build_vsc_infopacket(const struct dc_stream_state *stream, 
		info_packet->hb2 = 0x01;	// 01h = Revision number. VSC SDP supporting 3D stereo only

		info_packet->hb3 = 0x01;	// 01h = VSC SDP supporting 3D stereo only (HB2 = 01h).



		if (stream->timing.timing_3d_format == TIMING_3D_FORMAT_INBAND_FA)

			info_packet->sb[0] = 0x1;



		info_packet->valid = true;

	}



	if (stereo3dSupport) {

		/* ==============================================================================================================|

		 * A. STEREO 3D

		 * ==============================================================================================================|

		 * VSC Payload (1 byte) From DP1.2 spec

		 *

		 * Bits 3:0 (Stereo Interface Method Code)  |  Bits 7:4 (Stereo Interface Method Specific Parameter)

		 * -----------------------------------------------------------------------------------------------------

		 * 0 = Non Stereo Video                     |  Must be set to 0x0

		 * -----------------------------------------------------------------------------------------------------

		 * 1 = Frame/Field Sequential               |  0x0: L + R view indication based on MISC1 bit 2:1

		 *                                          |  0x1: Right when Stereo Signal = 1

		 *                                          |  0x2: Left when Stereo Signal = 1

		 *                                          |  (others reserved)

		 * -----------------------------------------------------------------------------------------------------

		 * 2 = Stacked Frame                        |  0x0: Left view is on top and right view on bottom

		 *                                          |  (others reserved)

		 * -----------------------------------------------------------------------------------------------------

		 * 3 = Pixel Interleaved                    |  0x0: horiz interleaved, right view pixels on even lines

		 *                                          |  0x1: horiz interleaved, right view pixels on odd lines

		 *                                          |  0x2: checker board, start with left view pixel

		 *                                          |  0x3: vertical interleaved, start with left view pixels

		 *                                          |  0x4: vertical interleaved, start with right view pixels

		 *                                          |  (others reserved)

		 * -----------------------------------------------------------------------------------------------------

		 * 4 = Side-by-side                         |  0x0: left half represents left eye view

		 *                                          |  0x1: left half represents right eye view

		 */

		switch (stream->timing.timing_3d_format) {

		case TIMING_3D_FORMAT_HW_FRAME_PACKING:

		case TIMING_3D_FORMAT_SW_FRAME_PACKING:

		case TIMING_3D_FORMAT_TOP_AND_BOTTOM:

		case TIMING_3D_FORMAT_TB_SW_PACKED:

			info_packet->sb[0] = 0x02; // Stacked Frame, Left view is on top and right view on bottom.

			break;

		case TIMING_3D_FORMAT_DP_HDMI_INBAND_FA:

		case TIMING_3D_FORMAT_INBAND_FA:

			info_packet->sb[0] = 0x01; // Frame/Field Sequential, L + R view indication based on MISC1 bit 2:1

			break;

		case TIMING_3D_FORMAT_SIDE_BY_SIDE:

		case TIMING_3D_FORMAT_SBS_SW_PACKED:

			info_packet->sb[0] = 0x04; // Side-by-side

			break;

		default:

			info_packet->sb[0] = 0x00; // No Stereo Video, Shall be cleared to 0x0.

			break;

		}



	}



	/* 05h = VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/Colorimetry Format indication.

	 *   Added in DP1.3, a DP Source device is allowed to indicate the pixel encoding/colorimetry

	 *   format to the DP Sink device with VSC SDP only when the DP Sink device supports it

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