media: uapi: Add IPU3 packed Y10 format

Some platforms with an Intel IPU3 have an IR sensor producing 10 bit greyscale format data that is transmitted over a CSI-2 bus to a CIO2 device - this packs the data into 32 bytes per 25 pixels. Add an entry to the uAPI header defining that format.

Daniel Scally committed 4 years ago

Commit b87f5e21 parent 92beb553 files · +16 −2Browse files

Unified · Split

3 files

Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst +13 −1
drivers/media/v4l2-core/v4l2-ioctl.c +1 −0
include/uapi/linux/videodev2.h +2 −1

Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst+13−1

@@ -48,6 +48,17 @@ are often referred to as greyscale formats. · 47 unmodified lines
48	48	- ...
49	49	- ...
50	50
	51	+ * .. _V4L2-PIX-FMT-IPU3-Y10:
	52	+
	53	+ - ``V4L2_PIX_FMT_IPU3_Y10``
	54	+ - 'ip3y'
	55	+
	56	+ - Y'\ :sub:`0`\ [7:0]
	57	+ - Y'\ :sub:`1`\ [5:0] Y'\ :sub:`0`\ [9:8]
	58	+ - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [9:6]
	59	+ - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [9:4]
	60	+ - Y'\ :sub:`3`\ [9:2]
	61	+
51	62	* .. _V4L2-PIX-FMT-Y10:
52	63
53	64	- ``V4L2_PIX_FMT_Y10``
@@ -133,4 +144,5 @@ are often referred to as greyscale formats. · 79 unmodified lines
133	144
134	145	For the Y16 and Y16_BE formats, the actual sampling precision may be lower
135	146	than 16 bits. For example, 10 bits per pixel uses values in the range 0 to
136		− 1023.
	147	+ 1023. For the IPU3_Y10 format 25 pixels are packed into 32 bytes, which
	148	+ leaves the 6 most significant bits of the last byte padded with 0.

drivers/media/v4l2-core/v4l2-ioctl.c+1−0

@@ -1269,6 +1269,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) · 1268 unmodified lines
1269	1269	case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1270	1270	case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1271	1271	case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
	1272	+ case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;
1272	1273	case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1273	1274	case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1274	1275	case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;

include/uapi/linux/videodev2.h+2−1

@@ -569,6 +569,7 @@ struct v4l2_pix_format { · 568 unmodified lines
569	569	/* Grey bit-packed formats */
570	570	#define V4L2_PIX_FMT_Y10BPACK v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */
571	571	#define V4L2_PIX_FMT_Y10P v4l2_fourcc('Y', '1', '0', 'P') /* 10 Greyscale, MIPI RAW10 packed */
	572	+#define V4L2_PIX_FMT_IPU3_Y10 v4l2_fourcc('i', 'p', '3', 'y') /* IPU3 packed 10-bit greyscale */
572	573
573	574	/* Palette formats */
574	575	#define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */
@@ -749,7 +750,7 @@ struct v4l2_pix_format { · 174 unmodified lines
749	750	#define V4L2_PIX_FMT_QC08C v4l2_fourcc('Q', '0', '8', 'C') /* Qualcomm 8-bit compressed */
750	751	#define V4L2_PIX_FMT_QC10C v4l2_fourcc('Q', '1', '0', 'C') /* Qualcomm 10-bit compressed */
751	752
752		−/* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */
	753	+/* 10bit raw packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */
753	754	#define V4L2_PIX_FMT_IPU3_SBGGR10 v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */
754	755	#define V4L2_PIX_FMT_IPU3_SGBRG10 v4l2_fourcc('i', 'p', '3', 'g') /* IPU3 packed 10-bit GBRG bayer */
755	756	#define V4L2_PIX_FMT_IPU3_SGRBG10 v4l2_fourcc('i', 'p', '3', 'G') /* IPU3 packed 10-bit GRBG bayer */