[Intel-gfx] [RFC 3/6] drm: Add a VSC structure for handling Pixel Encoding/Colorimetry Formats

[Gwan-gyeong Mun]

SDP VSC Header and Data Block follow DP 1.4a spec, section 2.2.5.7.5,
chapter "VSC SDP Payload for Pixel Encoding/Colorimetry Format".

Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
---
 include/drm/drm_dp_helper.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 5db7fb8c8b50..6091d29757af 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -1076,6 +1076,23 @@ struct edp_vsc_psr {
 	u8 DB8_31[24]; /* Reserved */
 } __packed;
 
+struct dp_vsc_sdp {
+	struct dp_sdp_header sdp_header;
+	u8 DB0; /* Stereo Interface */
+	u8 DB1; /* 0 - PSR State; 1 - Update RFB; 2 - CRC Valid */
+	u8 DB2; /* CRC value bits 7:0 of the R or Cr component */
+	u8 DB3; /* CRC value bits 15:8 of the R or Cr component */
+	u8 DB4; /* CRC value bits 7:0 of the G or Y component */
+	u8 DB5; /* CRC value bits 15:8 of the G or Y component */
+	u8 DB6; /* CRC value bits 7:0 of the B or Cb component */
+	u8 DB7; /* CRC value bits 15:8 of the B or Cb component */
+	u8 DB8_15[8];  /* Reserved */
+	u8 DB16; /* Pixel Encoding and Colorimetry Formats */
+	u8 DB17; /* Dynamic Range and Component Bit Depth */
+	u8 DB18; /* Content Type */
+	u8 DB19_31[13]; /* Reserved */
+} __packed;
+
 #define EDP_VSC_PSR_STATE_ACTIVE	(1<<0)
 #define EDP_VSC_PSR_UPDATE_RFB		(1<<1)
 #define EDP_VSC_PSR_CRC_VALUES_VALID	(1<<2)
-- 
2.20.1