Hi Sakari,
Thanks for the patch.
On Tuesday 20 December 2011 21:27:59 Sakari Ailus wrote:
> From: Sakari Ailus <sakari.ai...@iki.fi>
>
> Pixelrate is an essential part of the image data parameters. Add this.
> Together, the current parameters also define the frame rate.
>
> Sensors do not have a concept of frame rate; pixelrate is much more
> meaningful in this context. Also, it is best to combine the pixelrate with
> the other format parameters since there are dependencies between them.
>
> Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
> ---
> Documentation/DocBook/media/v4l/subdev-formats.xml | 10 +++++++++-
> include/linux/v4l2-mediabus.h | 4 +++-
> 2 files changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/DocBook/media/v4l/subdev-formats.xml
> b/Documentation/DocBook/media/v4l/subdev-formats.xml index
> 49c532e..a6a6630 100644
> --- a/Documentation/DocBook/media/v4l/subdev-formats.xml
> +++ b/Documentation/DocBook/media/v4l/subdev-formats.xml
> @@ -35,7 +35,15 @@
> </row>
> <row>
> <entry>__u32</entry>
> - <entry><structfield>reserved</structfield>[7]</entry>
> + <entry><structfield>pixelrate</structfield></entry>
> + <entry>Pixel rate in kp/s.
kPix/s or kPixel/s ?
> This clock is the maximum rate at
Is it really a clock ?
> + which pixels are transferred on the bus. The
> + <structfield>pixelrate</structfield> field is
> + read-only.</entry>
Does that mean that userspace isn't required to propagate the value down the
pipeline when configuring it ? I'm fine with that, but it should probably be
documented explictly somewhere to make sure that drivers don't rely on it.
> + </row>
> + <row>
> + <entry>__u32</entry>
> + <entry><structfield>reserved</structfield>[6]</entry>
> <entry>Reserved for future extensions. Applications and drivers must
> set the array to zero.</entry>
> </row>
> diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h
> index 5ea7f75..35c6b96 100644
> --- a/include/linux/v4l2-mediabus.h
> +++ b/include/linux/v4l2-mediabus.h
> @@ -101,6 +101,7 @@ enum v4l2_mbus_pixelcode {
> * @code: data format code (from enum v4l2_mbus_pixelcode)
> * @field: used interlacing type (from enum v4l2_field)
> * @colorspace: colorspace of the data (from enum v4l2_colorspace)
> + * @pixel_clock: pixel clock, in kHz
I think you forgot to update the comment.
> */
> struct v4l2_mbus_framefmt {
> __u32 width;
> @@ -108,7 +109,8 @@ struct v4l2_mbus_framefmt {
> __u32 code;
> __u32 field;
> __u32 colorspace;
> - __u32 reserved[7];
> + __u32 pixelrate;
> + __u32 reserved[6];
> };
>
> #endif
--
Regards,
Laurent Pinchart
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