]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commitdiff
drm/amd/display: Add DP YCbCr 4:2:0 support
authorEric Bernstein <eric.bernstein@amd.com>
Thu, 24 May 2018 19:50:27 +0000 (15:50 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 11 Sep 2018 03:42:15 +0000 (22:42 -0500)
[Why]
For supporting DP YCbCr 4:2:0 output.

[How]
Update mod_build_vsc_infopacket to support Pixel
Encoding/Colorimetry Format indication for VSC SDP rev5.

Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c

index 24b6cc1dfc6444a1764e1b3cbe36b73cc508269f..52378fc69079dbf89a95371ac5e139de2d5a3c14 100644 (file)
 #include "mod_info_packet.h"
 #include "core_types.h"
 
+enum ColorimetryRGBDP {
+       ColorimetryRGB_DP_sRGB               = 0,
+       ColorimetryRGB_DP_AdobeRGB           = 3,
+       ColorimetryRGB_DP_P3                 = 4,
+       ColorimetryRGB_DP_CustomColorProfile = 5,
+       ColorimetryRGB_DP_ITU_R_BT2020RGB    = 6,
+};
+enum ColorimetryYCCDP {
+       ColorimetryYCC_DP_ITU601        = 0,
+       ColorimetryYCC_DP_ITU709        = 1,
+       ColorimetryYCC_DP_AdobeYCC      = 5,
+       ColorimetryYCC_DP_ITU2020YCC    = 6,
+       ColorimetryYCC_DP_ITU2020YCbCr  = 7,
+};
+
 static void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
                struct dc_info_packet *info_packet)
 {
        unsigned int vscPacketRevision = 0;
        unsigned int i;
+       unsigned int pixelEncoding = 0;
+       unsigned int colorimetryFormat = 0;
 
        if (stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE && stream->view_format != VIEW_3D_FORMAT_NONE)
                vscPacketRevision = 1;
 
-
        /*VSC packet set to 2 when DP revision >= 1.2*/
        if (stream->psr_version != 0)
                vscPacketRevision = 2;
 
+       if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR420)
+               vscPacketRevision = 5;
 
        /* VSC packet not needed based on the features
         * supported by this DP display
@@ -81,6 +99,175 @@ static void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
 
                info_packet->valid = true;
        }
+
+       /* 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
+        *   (i.e., VSC_SDP_EXTENSION_FOR_COLORIMETRY_SUPPORTED bit in the DPRX_FEATURE_ENUMERATION_LIST
+        *   register (DPCD Address 02210h, bit 3) is set to 1).
+        *   (Requires VSC_SDP_EXTENSION_FOR_COLORIMETRY_SUPPORTED bit set to 1 in DPCD 02210h. This
+        *   DPCD register is exposed in the new Extended Receiver Capability field for DPCD Rev. 1.4
+        *   (and higher). When MISC1. bit 6. is Set to 1, a Source device uses a VSC SDP to indicate
+        *   the Pixel Encoding/Colorimetry Format and that a Sink device must ignore MISC1, bit 7, and
+        *   MISC0, bits 7:1 (MISC1, bit 7. and MISC0, bits 7:1 become “don’t care”).)
+        */
+       if (vscPacketRevision == 0x5) {
+               /* Secondary-data Packet ID = 0 */
+               info_packet->hb0 = 0x00;
+               /* 07h - Packet Type Value indicating Video Stream Configuration packet */
+               info_packet->hb1 = 0x07;
+               /* 05h = VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/Colorimetry Format indication. */
+               info_packet->hb2 = 0x05;
+               /* 13h = VSC SDP supporting 3D stereo, + PSR2, + Pixel Encoding/Colorimetry Format indication (HB2 = 05h). */
+               info_packet->hb3 = 0x13;
+
+               info_packet->valid = true;
+
+               /* Set VSC SDP fields for pixel encoding and colorimetry format from DP 1.3 specs
+                * Data Bytes DB 18~16
+                * Bits 3:0 (Colorimetry Format)        |  Bits 7:4 (Pixel Encoding)
+                * ----------------------------------------------------------------------------------------------------
+                * 0x0 = sRGB                           |  0 = RGB
+                * 0x1 = RGB Wide Gamut Fixed Point
+                * 0x2 = RGB Wide Gamut Floating Point
+                * 0x3 = AdobeRGB
+                * 0x4 = DCI-P3
+                * 0x5 = CustomColorProfile
+                * (others reserved)
+                * ----------------------------------------------------------------------------------------------------
+                * 0x0 = ITU-R BT.601                   |  1 = YCbCr444
+                * 0x1 = ITU-R BT.709
+                * 0x2 = xvYCC601
+                * 0x3 = xvYCC709
+                * 0x4 = sYCC601
+                * 0x5 = AdobeYCC601
+                * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc
+                * 0x7 = ITU-R BT.2020 Y'C'bC'r
+                * (others reserved)
+                * ----------------------------------------------------------------------------------------------------
+                * 0x0 = ITU-R BT.601                   |  2 = YCbCr422
+                * 0x1 = ITU-R BT.709
+                * 0x2 = xvYCC601
+                * 0x3 = xvYCC709
+                * 0x4 = sYCC601
+                * 0x5 = AdobeYCC601
+                * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc
+                * 0x7 = ITU-R BT.2020 Y'C'bC'r
+                * (others reserved)
+                * ----------------------------------------------------------------------------------------------------
+                * 0x0 = ITU-R BT.601                   |  3 = YCbCr420
+                * 0x1 = ITU-R BT.709
+                * 0x2 = xvYCC601
+                * 0x3 = xvYCC709
+                * 0x4 = sYCC601
+                * 0x5 = AdobeYCC601
+                * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc
+                * 0x7 = ITU-R BT.2020 Y'C'bC'r
+                * (others reserved)
+                * ----------------------------------------------------------------------------------------------------
+                * 0x0 =DICOM Part14 Grayscale          |  4 = Yonly
+                * Display Function
+                * (others reserved)
+                */
+
+               /* Set Pixel Encoding */
+               switch (stream->timing.pixel_encoding) {
+               case PIXEL_ENCODING_RGB:
+                       pixelEncoding = 0x0;  /* RGB = 0h */
+                       break;
+               case PIXEL_ENCODING_YCBCR444:
+                       pixelEncoding = 0x1;  /* YCbCr444 = 1h */
+                       break;
+               case PIXEL_ENCODING_YCBCR422:
+                       pixelEncoding = 0x2;  /* YCbCr422 = 2h */
+                       break;
+               case PIXEL_ENCODING_YCBCR420:
+                       pixelEncoding = 0x3;  /* YCbCr420 = 3h */
+                       break;
+               default:
+                       pixelEncoding = 0x0;  /* default RGB = 0h */
+                       break;
+               }
+
+               /* Set Colorimetry format based on pixel encoding */
+               switch (stream->timing.pixel_encoding) {
+               case PIXEL_ENCODING_RGB:
+                       if ((stream->output_color_space == COLOR_SPACE_SRGB) ||
+                                       (stream->output_color_space == COLOR_SPACE_SRGB_LIMITED))
+                               colorimetryFormat = ColorimetryRGB_DP_sRGB;
+                       else if (stream->output_color_space == COLOR_SPACE_ADOBERGB)
+                               colorimetryFormat = ColorimetryRGB_DP_AdobeRGB;
+                       else if ((stream->output_color_space == COLOR_SPACE_2020_RGB_FULLRANGE) ||
+                                       (stream->output_color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE))
+                               colorimetryFormat = ColorimetryRGB_DP_ITU_R_BT2020RGB;
+                       break;
+
+               case PIXEL_ENCODING_YCBCR444:
+               case PIXEL_ENCODING_YCBCR422:
+               case PIXEL_ENCODING_YCBCR420:
+                       /* Note: xvYCC probably not supported correctly here on DP since colorspace translation
+                        * loses distinction between BT601 vs xvYCC601 in translation
+                        */
+                       if (stream->output_color_space == COLOR_SPACE_YCBCR601)
+                               colorimetryFormat = ColorimetryYCC_DP_ITU601;
+                       else if (stream->output_color_space == COLOR_SPACE_YCBCR709)
+                               colorimetryFormat = ColorimetryYCC_DP_ITU709;
+                       else if (stream->output_color_space == COLOR_SPACE_ADOBERGB)
+                               colorimetryFormat = ColorimetryYCC_DP_AdobeYCC;
+                       else if (stream->output_color_space == COLOR_SPACE_2020_YCBCR)
+                               colorimetryFormat = ColorimetryYCC_DP_ITU2020YCbCr;
+                       break;
+
+               default:
+                       colorimetryFormat = ColorimetryRGB_DP_sRGB;
+                       break;
+               }
+
+               info_packet->sb[16] = (pixelEncoding << 4) | colorimetryFormat;
+
+               /* Set color depth */
+               switch (stream->timing.display_color_depth) {
+               case COLOR_DEPTH_666:
+                       /* NOTE: This is actually not valid for YCbCr pixel encoding to have 6 bpc
+                        *       as of DP1.4 spec, but value of 0 probably reserved here for potential future use.
+                        */
+                       info_packet->sb[17] = 0;
+                       break;
+               case COLOR_DEPTH_888:
+                       info_packet->sb[17] = 1;
+                       break;
+               case COLOR_DEPTH_101010:
+                       info_packet->sb[17] = 2;
+                       break;
+               case COLOR_DEPTH_121212:
+                       info_packet->sb[17] = 3;
+                       break;
+               /*case COLOR_DEPTH_141414: -- NO SUCH FORMAT IN DP SPEC */
+               case COLOR_DEPTH_161616:
+                       info_packet->sb[17] = 4;
+                       break;
+               default:
+                       info_packet->sb[17] = 0;
+                       break;
+               }
+
+               /* all YCbCr are always limited range */
+               if ((stream->output_color_space == COLOR_SPACE_SRGB_LIMITED) ||
+                               (stream->output_color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE) ||
+                               (pixelEncoding != 0x0)) {
+                       info_packet->sb[17] |= 0x80; /* DB17 bit 7 set to 1 for CEA timing. */
+               }
+
+               /* Content Type (Bits 2:0)
+                *  0 = Not defined.
+                *  1 = Graphics.
+                *  2 = Photo.
+                *  3 = Video.
+                *  4 = Game.
+                */
+               info_packet->sb[18] = 0;
+       }
+
 }
 
 void mod_build_infopackets(struct info_packet_inputs *inputs,