[RFC v4 4/8] v4l2: add support for colorspace conversion API (CSC) for video capture and subdevices

[Dafna Hirschfeld]

On 26.06.20 14:22, Philipp Zabel wrote:
> Hi Dafna,
> 
> On Mon, 2020-06-08 at 12:00 +0200, Hans Verkuil wrote:
> [...]
>>> diff --git a/include/uapi/linux/v4l2-mediabus.h b/include/uapi/linux/v4l2-mediabus.h
>>> index 123a231001a8..0f916278137a 100644
>>> --- a/include/uapi/linux/v4l2-mediabus.h
>>> +++ b/include/uapi/linux/v4l2-mediabus.h
>>> @@ -16,6 +16,8 @@
>>>   #include <linux/types.h>
>>>   #include <linux/videodev2.h>
>>>   
>>> +#define V4L2_MBUS_FRAMEFMT_SET_CSC	0x0001
>>> +
>>>   /**
>>>    * struct v4l2_mbus_framefmt - frame format on the media bus
>>>    * @width:	image width
>>> @@ -36,7 +38,8 @@ struct v4l2_mbus_framefmt {
>>>   	__u16			ycbcr_enc;
>>>   	__u16			quantization;
>>>   	__u16			xfer_func;
>>> -	__u16			reserved[11];
>>> +	__u16			flags;
>>> +	__u16			reserved[10];
>>>   };
> 
> The the flags field should also be added to the kerneldoc comment.

Hi, Which kerneldoc comment do you mean?
I added to the doc of the v4l2-mbus-framefmt:

     * - __u16
       - ``flags``
       - flags See:  :ref:v4l2-mbus-framefmt-flags
  

> 
>>>   
>>>   #ifndef __KERNEL__
>>> diff --git a/include/uapi/linux/v4l2-subdev.h b/include/uapi/linux/v4l2-subdev.h
>>> index 5d2a1dab7911..972e64d8b54e 100644
>>> --- a/include/uapi/linux/v4l2-subdev.h
>>> +++ b/include/uapi/linux/v4l2-subdev.h
>>> @@ -65,6 +65,8 @@ struct v4l2_subdev_crop {
>>>   	__u32 reserved[8];
>>>   };
>>>   
>>> +#define V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC	0x00000001
>>> +#define V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION	0x00000002
>>>   /**
>>>    * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
>>>    * @pad: pad number, as reported by the media API
>>> @@ -77,7 +79,8 @@ struct v4l2_subdev_mbus_code_enum {
>>>   	__u32 index;
>>>   	__u32 code;
>>>   	__u32 which;
>>> -	__u32 reserved[8];
>>> +	__u32 flags;
>>> +	__u32 reserved[7];
>>>   };
> 
> Same as above.

Same questions as above.

Thanks,
Dafna

> 
> regards
> Philipp
>