Hi Hans,
On 8.06.2018 11:13, Hans Verkuil wrote:
> On 05/08/2018 10:46 AM, Todor Tomov wrote:
>> The new format will be called V4L2_PIX_FMT_Y10P.
>> It is similar to the V4L2_PIX_FMT_SBGGR10P family formats
>> but V4L2_PIX_FMT_Y10P is a grayscale format.
>>
>> Signed-off-by: Todor Tomov <todor.tomov@xxxxxxxxxx>
>
> I see no patch adding support for this to a driver. We don't like adding new
> defines without a driver that needs it.
>
> Is it possible to add support for this to a mainlined driver? Or is it going to
> be used by a new driver?
This will be used by a new version of the QComm CAMSS driver. I wanted to get it
reviewed first.
If it is ok, you could take it when the new QComm CAMSS is posted and accepted.
Best regards,
Todor
>
> Regards,
>
> Hans
>
>> ---
>>
>> v2:
>> - doc: improved bit-packed representation: added bit positions for LSB bits;
>> - doc: improved bit-packed representation: added table column widths.
>>
>> Documentation/media/uapi/v4l/pixfmt-y10p.rst | 33 ++++++++++++++++++++++++++++
>> Documentation/media/uapi/v4l/yuv-formats.rst | 1 +
>> drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
>> include/uapi/linux/videodev2.h | 1 +
>> 4 files changed, 36 insertions(+)
>> create mode 100644 Documentation/media/uapi/v4l/pixfmt-y10p.rst
>>
>> diff --git a/Documentation/media/uapi/v4l/pixfmt-y10p.rst b/Documentation/media/uapi/v4l/pixfmt-y10p.rst
>> new file mode 100644
>> index 0000000..13b5713
>> --- /dev/null
>> +++ b/Documentation/media/uapi/v4l/pixfmt-y10p.rst
>> @@ -0,0 +1,33 @@
>> +.. -*- coding: utf-8; mode: rst -*-
>> +
>> +.. _V4L2-PIX-FMT-Y10P:
>> +
>> +******************************
>> +V4L2_PIX_FMT_Y10P ('Y10P')
>> +******************************
>> +
>> +Grey-scale image as a MIPI RAW10 packed array
>> +
>> +
>> +Description
>> +===========
>> +
>> +This is a packed grey-scale image format with a depth of 10 bits per
>> +pixel. Every four consecutive pixels are packed into 5 bytes. Each of
>> +the first 4 bytes contain the 8 high order bits of the pixels, and
>> +the 5th byte contains the 2 least significants bits of each pixel,
>> +in the same order.
>> +
>> +**Bit-packed representation.**
>> +
>> +.. flat-table::
>> + :header-rows: 0
>> + :stub-columns: 0
>> + :widths: 8 8 8 8 64
>> +
>> + * - Y'\ :sub:`00[9:2]`
>> + - Y'\ :sub:`01[9:2]`
>> + - Y'\ :sub:`02[9:2]`
>> + - Y'\ :sub:`03[9:2]`
>> + - Y'\ :sub:`03[1:0]`\ (bits 7--6) Y'\ :sub:`02[1:0]`\ (bits 5--4)
>> + Y'\ :sub:`01[1:0]`\ (bits 3--2) Y'\ :sub:`00[1:0]`\ (bits 1--0)
>> diff --git a/Documentation/media/uapi/v4l/yuv-formats.rst b/Documentation/media/uapi/v4l/yuv-formats.rst
>> index 3334ea4..9ab0592 100644
>> --- a/Documentation/media/uapi/v4l/yuv-formats.rst
>> +++ b/Documentation/media/uapi/v4l/yuv-formats.rst
>> @@ -29,6 +29,7 @@ to brightness information.
>> pixfmt-y10
>> pixfmt-y12
>> pixfmt-y10b
>> + pixfmt-y10p
>> pixfmt-y16
>> pixfmt-y16-be
>> pixfmt-y8i
>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>> index de5d96d..dececea 100644
>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>> @@ -1147,6 +1147,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
>> case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
>> case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
>> case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
>> + case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
>> case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
>> case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
>> case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>> index 600877b..b24ab720 100644
>> --- a/include/uapi/linux/videodev2.h
>> +++ b/include/uapi/linux/videodev2.h
>> @@ -522,6 +522,7 @@ struct v4l2_pix_format {
>>
>> /* Grey bit-packed formats */
>> #define V4L2_PIX_FMT_Y10BPACK v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */
>> +#define V4L2_PIX_FMT_Y10P v4l2_fourcc('Y', '1', '0', 'P') /* 10 Greyscale, MIPI RAW10 packed */
>>
>> /* Palette formats */
>> #define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */
>>
>
