/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  v4l2 uvc internal API header
 *
 *  Some commonly needed functions for uvc drivers
 */

#ifndef __LINUX_V4L2_UVC_H
#define __LINUX_V4L2_UVC_H

/* ------------------------------------------------------------------------
 * GUIDs
 */
#define UVC_GUID_UVC_CAMERA \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
#define UVC_GUID_UVC_OUTPUT \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
#define UVC_GUID_UVC_PROCESSING \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
#define UVC_GUID_UVC_SELECTOR \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
#define UVC_GUID_EXT_GPIO_CONTROLLER \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03}

#define UVC_GUID_FORMAT_MJPEG \
	{ 'M',  'J',  'P',  'G', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_YUY2 \
	{ 'Y',  'U',  'Y',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_YUY2_ISIGHT \
	{ 'Y',  'U',  'Y',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_NV12 \
	{ 'N',  'V',  '1',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_YV12 \
	{ 'Y',  'V',  '1',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_I420 \
	{ 'I',  '4',  '2',  '0', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_UYVY \
	{ 'U',  'Y',  'V',  'Y', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y800 \
	{ 'Y',  '8',  '0',  '0', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y8 \
	{ 'Y',  '8',  ' ',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y10 \
	{ 'Y',  '1',  '0',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y12 \
	{ 'Y',  '1',  '2',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y16 \
	{ 'Y',  '1',  '6',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_BY8 \
	{ 'B',  'Y',  '8',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_BA81 \
	{ 'B',  'A',  '8',  '1', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_GBRG \
	{ 'G',  'B',  'R',  'G', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_GRBG \
	{ 'G',  'R',  'B',  'G', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_RGGB \
	{ 'R',  'G',  'G',  'B', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_BG16 \
	{ 'B',  'G',  '1',  '6', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_GB16 \
	{ 'G',  'B',  '1',  '6', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_RG16 \
	{ 'R',  'G',  '1',  '6', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_GR16 \
	{ 'G',  'R',  '1',  '6', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_RGBP \
	{ 'R',  'G',  'B',  'P', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_BGR3 \
	{ 0x7d, 0xeb, 0x36, 0xe4, 0x4f, 0x52, 0xce, 0x11, \
	 0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}
#define UVC_GUID_FORMAT_M420 \
	{ 'M',  '4',  '2',  '0', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}

#define UVC_GUID_FORMAT_H264 \
	{ 'H',  '2',  '6',  '4', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_H265 \
	{ 'H',  '2',  '6',  '5', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y8I \
	{ 'Y',  '8',  'I',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y12I \
	{ 'Y',  '1',  '2',  'I', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Z16 \
	{ 'Z',  '1',  '6',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_RW10 \
	{ 'R',  'W',  '1',  '0', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_INVZ \
	{ 'I',  'N',  'V',  'Z', 0x90, 0x2d, 0x58, 0x4a, \
	 0x92, 0x0b, 0x77, 0x3f, 0x1f, 0x2c, 0x55, 0x6b}
#define UVC_GUID_FORMAT_INZI \
	{ 'I',  'N',  'Z',  'I', 0x66, 0x1a, 0x42, 0xa2, \
	 0x90, 0x65, 0xd0, 0x18, 0x14, 0xa8, 0xef, 0x8a}
#define UVC_GUID_FORMAT_INVI \
	{ 'I',  'N',  'V',  'I', 0xdb, 0x57, 0x49, 0x5e, \
	 0x8e, 0x3f, 0xf4, 0x79, 0x53, 0x2b, 0x94, 0x6f}
#define UVC_GUID_FORMAT_CNF4 \
	{ 'C',  ' ',  ' ',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}

#define UVC_GUID_FORMAT_D3DFMT_L8 \
	{0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_KSMEDIA_L8_IR \
	{0x32, 0x00, 0x00, 0x00, 0x02, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}

#define UVC_GUID_FORMAT_HEVC \
	{ 'H',  'E',  'V',  'C', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}

/* ------------------------------------------------------------------------
 * Video formats
 */

struct uvc_format_desc {
	char *name;
	u8 guid[16];
	u32 fcc;
};

static struct uvc_format_desc uvc_fmts[] = {
	{
		.name		= "YUV 4:2:2 (YUYV)",
		.guid		= UVC_GUID_FORMAT_YUY2,
		.fcc		= V4L2_PIX_FMT_YUYV,
	},
	{
		.name		= "YUV 4:2:2 (YUYV)",
		.guid		= UVC_GUID_FORMAT_YUY2_ISIGHT,
		.fcc		= V4L2_PIX_FMT_YUYV,
	},
	{
		.name		= "YUV 4:2:0 (NV12)",
		.guid		= UVC_GUID_FORMAT_NV12,
		.fcc		= V4L2_PIX_FMT_NV12,
	},
	{
		.name		= "MJPEG",
		.guid		= UVC_GUID_FORMAT_MJPEG,
		.fcc		= V4L2_PIX_FMT_MJPEG,
	},
	{
		.name		= "YVU 4:2:0 (YV12)",
		.guid		= UVC_GUID_FORMAT_YV12,
		.fcc		= V4L2_PIX_FMT_YVU420,
	},
	{
		.name		= "YUV 4:2:0 (I420)",
		.guid		= UVC_GUID_FORMAT_I420,
		.fcc		= V4L2_PIX_FMT_YUV420,
	},
	{
		.name		= "YUV 4:2:0 (M420)",
		.guid		= UVC_GUID_FORMAT_M420,
		.fcc		= V4L2_PIX_FMT_M420,
	},
	{
		.name		= "YUV 4:2:2 (UYVY)",
		.guid		= UVC_GUID_FORMAT_UYVY,
		.fcc		= V4L2_PIX_FMT_UYVY,
	},
	{
		.name		= "Greyscale 8-bit (Y800)",
		.guid		= UVC_GUID_FORMAT_Y800,
		.fcc		= V4L2_PIX_FMT_GREY,
	},
	{
		.name		= "Greyscale 8-bit (Y8  )",
		.guid		= UVC_GUID_FORMAT_Y8,
		.fcc		= V4L2_PIX_FMT_GREY,
	},
	{
		.name		= "Greyscale 8-bit (D3DFMT_L8)",
		.guid		= UVC_GUID_FORMAT_D3DFMT_L8,
		.fcc		= V4L2_PIX_FMT_GREY,
	},
	{
		.name		= "IR 8-bit (L8_IR)",
		.guid		= UVC_GUID_FORMAT_KSMEDIA_L8_IR,
		.fcc		= V4L2_PIX_FMT_GREY,
	},
	{
		.name		= "Greyscale 10-bit (Y10 )",
		.guid		= UVC_GUID_FORMAT_Y10,
		.fcc		= V4L2_PIX_FMT_Y10,
	},
	{
		.name		= "Greyscale 12-bit (Y12 )",
		.guid		= UVC_GUID_FORMAT_Y12,
		.fcc		= V4L2_PIX_FMT_Y12,
	},
	{
		.name		= "Greyscale 16-bit (Y16 )",
		.guid		= UVC_GUID_FORMAT_Y16,
		.fcc		= V4L2_PIX_FMT_Y16,
	},
	{
		.name		= "BGGR Bayer (BY8 )",
		.guid		= UVC_GUID_FORMAT_BY8,
		.fcc		= V4L2_PIX_FMT_SBGGR8,
	},
	{
		.name		= "BGGR Bayer (BA81)",
		.guid		= UVC_GUID_FORMAT_BA81,
		.fcc		= V4L2_PIX_FMT_SBGGR8,
	},
	{
		.name		= "GBRG Bayer (GBRG)",
		.guid		= UVC_GUID_FORMAT_GBRG,
		.fcc		= V4L2_PIX_FMT_SGBRG8,
	},
	{
		.name		= "GRBG Bayer (GRBG)",
		.guid		= UVC_GUID_FORMAT_GRBG,
		.fcc		= V4L2_PIX_FMT_SGRBG8,
	},
	{
		.name		= "RGGB Bayer (RGGB)",
		.guid		= UVC_GUID_FORMAT_RGGB,
		.fcc		= V4L2_PIX_FMT_SRGGB8,
	},
	{
		.name		= "RGB565",
		.guid		= UVC_GUID_FORMAT_RGBP,
		.fcc		= V4L2_PIX_FMT_RGB565,
	},
	{
		.name		= "BGR 8:8:8 (BGR3)",
		.guid		= UVC_GUID_FORMAT_BGR3,
		.fcc		= V4L2_PIX_FMT_BGR24,
	},
	{
		.name		= "H.264",
		.guid		= UVC_GUID_FORMAT_H264,
		.fcc		= V4L2_PIX_FMT_H264,
	},
	{
		.name		= "H.265",
		.guid		= UVC_GUID_FORMAT_H265,
		.fcc		= V4L2_PIX_FMT_HEVC,
	},
	{
		.name		= "Greyscale 8 L/R (Y8I)",
		.guid		= UVC_GUID_FORMAT_Y8I,
		.fcc		= V4L2_PIX_FMT_Y8I,
	},
	{
		.name		= "Greyscale 12 L/R (Y12I)",
		.guid		= UVC_GUID_FORMAT_Y12I,
		.fcc		= V4L2_PIX_FMT_Y12I,
	},
	{
		.name		= "Depth data 16-bit (Z16)",
		.guid		= UVC_GUID_FORMAT_Z16,
		.fcc		= V4L2_PIX_FMT_Z16,
	},
	{
		.name		= "Bayer 10-bit (SRGGB10P)",
		.guid		= UVC_GUID_FORMAT_RW10,
		.fcc		= V4L2_PIX_FMT_SRGGB10P,
	},
	{
		.name		= "Bayer 16-bit (SBGGR16)",
		.guid		= UVC_GUID_FORMAT_BG16,
		.fcc		= V4L2_PIX_FMT_SBGGR16,
	},
	{
		.name		= "Bayer 16-bit (SGBRG16)",
		.guid		= UVC_GUID_FORMAT_GB16,
		.fcc		= V4L2_PIX_FMT_SGBRG16,
	},
	{
		.name		= "Bayer 16-bit (SRGGB16)",
		.guid		= UVC_GUID_FORMAT_RG16,
		.fcc		= V4L2_PIX_FMT_SRGGB16,
	},
	{
		.name		= "Bayer 16-bit (SGRBG16)",
		.guid		= UVC_GUID_FORMAT_GR16,
		.fcc		= V4L2_PIX_FMT_SGRBG16,
	},
	{
		.name		= "Depth data 16-bit (Z16)",
		.guid		= UVC_GUID_FORMAT_INVZ,
		.fcc		= V4L2_PIX_FMT_Z16,
	},
	{
		.name		= "Greyscale 10-bit (Y10 )",
		.guid		= UVC_GUID_FORMAT_INVI,
		.fcc		= V4L2_PIX_FMT_Y10,
	},
	{
		.name		= "IR:Depth 26-bit (INZI)",
		.guid		= UVC_GUID_FORMAT_INZI,
		.fcc		= V4L2_PIX_FMT_INZI,
	},
	{
		.name		= "4-bit Depth Confidence (Packed)",
		.guid		= UVC_GUID_FORMAT_CNF4,
		.fcc		= V4L2_PIX_FMT_CNF4,
	},
	{
		.name		= "HEVC",
		.guid		= UVC_GUID_FORMAT_HEVC,
		.fcc		= V4L2_PIX_FMT_HEVC,
	},
};

static inline struct uvc_format_desc *uvc_format_by_guid(const u8 guid[16])
{
	unsigned int len = ARRAY_SIZE(uvc_fmts);
	unsigned int i;

	for (i = 0; i < len; ++i) {
		if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
			return &uvc_fmts[i];
	}

	return NULL;
}

#endif /* __LINUX_V4L2_UVC_H */