linux-kernel - Re: i.MX6 MIPI-CSI2 OV5640 Camera testing on Mainline Linux

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 5 Nov 2018 16:32:33 -0600
From:   Adam Ford <aford173@...il.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     jacopo@...ndi.org, steve_longerbeam@...tor.com,
        Jagan Teki <jagan@...rulasolutions.com>,
        p.zabel@...gutronix.de, Fabio Estevam <fabio.estevam@....com>,
        gstreamer-devel@...ts.freedesktop.org, linux-media@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: i.MX6 MIPI-CSI2 OV5640 Camera testing on Mainline Linux

On Mon, Oct 29, 2018 at 8:49 AM Fabio Estevam <festevam@...il.com> wrote:
>
> Hi Adam,
>
> On Sun, Oct 28, 2018 at 3:58 PM Adam Ford <aford173@...il.com> wrote:
>
> > Does anyone know when the media branch get's merged into the mainline
> > kernel?  I assume we're in the merge window with 4.19 just having been
> > released.  Once these have been merged into the mainline, I'll go
> > through and start requesting they get pulled into 4.19 and/or 4.14
> > if/when appropriate.
>
> This should happen in 4.20-rc1, which will probably be out next  Sunday.
I sent an e-mail to stable with a list of a variety of patches for the
ov5640 to be applied to 4.19.y  So far all looks pretty good, but I
think I found on minor bug:

If I attempt to change just the resolution, it doesn't take.

Initial read
media-ctl --get-v4l2 "'ov5640 2-0010':0"
[fmt:UYVY8_2X8/640x480@...0 field:none colorspace:srgb xfer:srgb
ycbcr:601 quantization:full-range]

Change resolution
# media-ctl --set-v4l2 "'ov5640 2-0010':0[fmt:UYVY2X8/720x480 field:none]"

Read it back
# media-ctl --get-v4l2 "'ov5640 2-0010':0"
[fmt:UYVY8_2X8/640x480@...0 field:none colorspace:srgb xfer:srgb
ycbcr:601 quantization:full-range]

However, if I change the resolution AND the format to something other
than UYVY2x8, the resolution changes. I can then change the format
back to UYVY and capture and stream video at 1080p and 720x480.
I can work around this, but I thought I'd mention it.  I was trying to
figure out a patch to apply to the mailing list myself, but I wasn't
able to fix it quickly.

adam
adam