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drm: Add DP1.4 VSC SDP Payload related Data Structures

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It adds new enumeration definitions for VSC SDP Payload for Pixel
Encoding/Colorimetry Format.
And it adds a new drm data structure for DP VSC SDP.

enum dp_colorspace and enum dp_colorimetry correspond "Pixel Encoding and
Colorimetry Formats". enum dp_dynamic_range corresponds "Dynamic Range".
And enum dp_content_type corresponds "Content Type"
All of them are based on DP 1.4 spec [Table 2-117: VSC SDP Payload for
DB16 through DB18].

v3: Add a new drm data structure for DP VSC SDP
v5: Addressed review comments from Uma
    - Add kernel docs for added data structures
    - Rename enum dp_colorspace to dp_pixelformat
    - Polish commit message
    - Fix typos
    - Drop self-explanatory comments

Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200211074657.231405-2-gwan-gyeong.mun@intel.com
This commit is contained in:
Gwan-gyeong Mun 2020-02-11 09:46:40 +02:00 committed by Jani Nikula
parent 8e37d69913
commit e2e4c4e1dc
1 changed files with 130 additions and 0 deletions
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130
include/drm/drm_dp_helper.h
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@ -1209,6 +1209,136 @@ struct dp_sdp {
#define EDP_VSC_PSR_UPDATE_RFB (1<<1)
#define EDP_VSC_PSR_CRC_VALUES_VALID (1<<2)
/**
* enum dp_pixelformat - drm DP Pixel encoding formats
*
* This enum is used to indicate DP VSC SDP Pixel encoding formats.
* It is based on DP 1.4 spec [Table 2-117: VSC SDP Payload for DB16 through
* DB18]
*
* @DP_PIXELFORMAT_RGB: RGB pixel encoding format
* @DP_PIXELFORMAT_YUV444: YCbCr 4:4:4 pixel encoding format
* @DP_PIXELFORMAT_YUV422: YCbCr 4:2:2 pixel encoding format
* @DP_PIXELFORMAT_YUV420: YCbCr 4:2:0 pixel encoding format
* @DP_PIXELFORMAT_Y_ONLY: Y Only pixel encoding format
* @DP_PIXELFORMAT_RAW: RAW pixel encoding format
* @DP_PIXELFORMAT_RESERVED: Reserved pixel encoding format
*/
enum dp_pixelformat {
DP_PIXELFORMAT_RGB = 0,
DP_PIXELFORMAT_YUV444 = 0x1,
DP_PIXELFORMAT_YUV422 = 0x2,
DP_PIXELFORMAT_YUV420 = 0x3,
DP_PIXELFORMAT_Y_ONLY = 0x4,
DP_PIXELFORMAT_RAW = 0x5,
DP_PIXELFORMAT_RESERVED = 0x6,
};
/**
* enum dp_colorimetry - drm DP Colorimetry formats
*
* This enum is used to indicate DP VSC SDP Colorimetry formats.
* It is based on DP 1.4 spec [Table 2-117: VSC SDP Payload for DB16 through
* DB18] and a name of enum member follows DRM_MODE_COLORIMETRY definition.
*
* @DP_COLORIMETRY_DEFAULT: sRGB (IEC 61966-2-1) or
* ITU-R BT.601 colorimetry format
* @DP_COLORIMETRY_RGB_WIDE_FIXED: RGB wide gamut fixed point colorimetry format
* @DP_COLORIMETRY_BT709_YCC: ITU-R BT.709 colorimetry format
* @DP_COLORIMETRY_RGB_WIDE_FLOAT: RGB wide gamut floating point
* (scRGB (IEC 61966-2-2)) colorimetry format
* @DP_COLORIMETRY_XVYCC_601: xvYCC601 colorimetry format
* @DP_COLORIMETRY_OPRGB: OpRGB colorimetry format
* @DP_COLORIMETRY_XVYCC_709: xvYCC709 colorimetry format
* @DP_COLORIMETRY_DCI_P3_RGB: DCI-P3 (SMPTE RP 431-2) colorimetry format
* @DP_COLORIMETRY_SYCC_601: sYCC601 colorimetry format
* @DP_COLORIMETRY_RGB_CUSTOM: RGB Custom Color Profile colorimetry format
* @DP_COLORIMETRY_OPYCC_601: opYCC601 colorimetry format
* @DP_COLORIMETRY_BT2020_RGB: ITU-R BT.2020 R' G' B' colorimetry format
* @DP_COLORIMETRY_BT2020_CYCC: ITU-R BT.2020 Y'c C'bc C'rc colorimetry format
* @DP_COLORIMETRY_BT2020_YCC: ITU-R BT.2020 Y' C'b C'r colorimetry format
*/
enum dp_colorimetry {
DP_COLORIMETRY_DEFAULT = 0,
DP_COLORIMETRY_RGB_WIDE_FIXED = 0x1,
DP_COLORIMETRY_BT709_YCC = 0x1,
DP_COLORIMETRY_RGB_WIDE_FLOAT = 0x2,
DP_COLORIMETRY_XVYCC_601 = 0x2,
DP_COLORIMETRY_OPRGB = 0x3,
DP_COLORIMETRY_XVYCC_709 = 0x3,
DP_COLORIMETRY_DCI_P3_RGB = 0x4,
DP_COLORIMETRY_SYCC_601 = 0x4,
DP_COLORIMETRY_RGB_CUSTOM = 0x5,
DP_COLORIMETRY_OPYCC_601 = 0x5,
DP_COLORIMETRY_BT2020_RGB = 0x6,
DP_COLORIMETRY_BT2020_CYCC = 0x6,
DP_COLORIMETRY_BT2020_YCC = 0x7,
};
/**
* enum dp_dynamic_range - drm DP Dynamic Range
*
* This enum is used to indicate DP VSC SDP Dynamic Range.
* It is based on DP 1.4 spec [Table 2-117: VSC SDP Payload for DB16 through
* DB18]
*
* @DP_DYNAMIC_RANGE_VESA: VESA range
* @DP_DYNAMIC_RANGE_CTA: CTA range
*/
enum dp_dynamic_range {
DP_DYNAMIC_RANGE_VESA = 0,
DP_DYNAMIC_RANGE_CTA = 1,
};
/**
* enum dp_content_type - drm DP Content Type
*
* This enum is used to indicate DP VSC SDP Content Types.
* It is based on DP 1.4 spec [Table 2-117: VSC SDP Payload for DB16 through
* DB18]
* CTA-861-G defines content types and expected processing by a sink device
*
* @DP_CONTENT_TYPE_NOT_DEFINED: Not defined type
* @DP_CONTENT_TYPE_GRAPHICS: Graphics type
* @DP_CONTENT_TYPE_PHOTO: Photo type
* @DP_CONTENT_TYPE_VIDEO: Video type
* @DP_CONTENT_TYPE_GAME: Game type
*/
enum dp_content_type {
DP_CONTENT_TYPE_NOT_DEFINED = 0x00,
DP_CONTENT_TYPE_GRAPHICS = 0x01,
DP_CONTENT_TYPE_PHOTO = 0x02,
DP_CONTENT_TYPE_VIDEO = 0x03,
DP_CONTENT_TYPE_GAME = 0x04,
};
/**
* struct drm_dp_vsc_sdp - drm DP VSC SDP
*
* This structure represents a DP VSC SDP of drm
* It is based on DP 1.4 spec [Table 2-116: VSC SDP Header Bytes] and
* [Table 2-117: VSC SDP Payload for DB16 through DB18]
*
* @sdp_type: secondary-data packet type
* @revision: revision number
* @length: number of valid data bytes
* @pixelformat: pixel encoding format
* @colorimetry: colorimetry format
* @bpc: bit per color
* @dynamic_range: dynamic range information
* @content_type: CTA-861-G defines content types and expected processing by a sink device
*/
struct drm_dp_vsc_sdp {
unsigned char sdp_type;
unsigned char revision;
unsigned char length;
enum dp_pixelformat pixelformat;
enum dp_colorimetry colorimetry;
int bpc;
enum dp_dynamic_range dynamic_range;
enum dp_content_type content_type;
};
int drm_dp_psr_setup_time(const u8 psr_cap[EDP_PSR_RECEIVER_CAP_SIZE]);
static inline int