[alsa-devel] [GIT PULL FOR 2.6.39] Media controller and OMAP3 ISP driver

Laurent Pinchart laurent.pinchart at ideasonboard.com
Sat Mar 5 21:48:05 CET 2011


Hi Mauro,

On Saturday 05 March 2011 19:22:28 Mauro Carvalho Chehab wrote:
> Em 05-03-2011 10:02, Laurent Pinchart escreveu:
> > Hi Mauro,
> > 
> > Thanks for the review. Let me address all your concerns in a single mail.
> > 
> > - ioctl numbers
> > 
> > I'll send you a patch that reserves a range in Documentation/ioctl/ioctl-
> > number.txt and update include/linux/media.h accordingly.
> 
> Ok, thanks.

"media: Pick a free ioctls range" at the top of the 
http://git.linuxtv.org/pinchartl/media.git?a=shortlog;h=refs/heads/media-2.6.39-0005-
omap3isp branch

> > - private ioctls
> > 
> > As already explained by David, the private ioctls are used to control
> > advanced device features that can't be handled by V4L2 controls at the
> > moment (such as setting a gamma correction table). Using those ioctls is
> > not mandatory, and the device will work correctly without them (albeit
> > with a non optimal image quality).
> > 
> > David said he will submit a patch to document the ioctls.
> 
> Ok.

Working on that.

> > - media bus formats
> > 
> > As Hans explained, there's no 1:1 relationship between media bus formats
> > and pixel formats.
> 
> Yet, there are some relationship between them. See my comments on my
> previous email.

Let's continue the discussion in the mail thread.

> > - FOURCC and media bus codes documentation
> > 
> > I forgot to document some of them. I'll send a new patch that adds the
> > missing documentation.
> 
> Ok.

"v4l: Add documentation for the 12 bits bayer pixel formats"
"v4l: Fix 12 bits bayer media bus format documentation"

in the 
http://git.linuxtv.org/pinchartl/media.git?a=shortlog;h=refs/heads/media-2.6.39-0004-
v4l-misc branch.

> > Is there any other issue I need to address ?
> 
> Nothing else, in the patches I've analysed so far. I'll take a look at the
> remaining omap3isp after receiving the documentation for the private
> ioctl's.
> 
> > My understanding is that there's
> > no need to rebase the existing patches, is that correct ?
> 
> Yes, it is correct. Just send the new patches to be applied at the end of
> the series. I'll eventually reorder them if needed to avoid breaking git
> bisect.

Please squash "v4l: Add documentation for the 12 bits bayer pixel formats" 
with "v4l: Add 12 bits bayer pixel formats" and "v4l: Fix 12 bits bayer media 
bus format documentation" with "v4l: Add missing 12 bits bayer media bus 
formats" when applying to keep the history clean. You can discard the commit 
message of the two new patches.

-- 
Regards,

Laurent Pinchart


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