linux-kernel - Re: ipu3-imgu 0000:00:05.0: required queues are disabled

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Date:   Tue, 29 Jan 2019 19:32:12 +0800
From:   Bingbu Cao <bingbu.cao@...ux.intel.com>
To:     Kai Heng Feng <kai.heng.feng@...onical.com>,
        Kieran Bingham <kieran.bingham@...asonboard.com>
Cc:     sakari.ailus@...ux.intel.com, bingbu.cao@...el.com,
        yong.zhi@...el.com, linux-media@...r.kernel.org,
        devel@...verdev.osuosl.org,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        LibCamera Devel <libcamera-devel@...ts.libcamera.org>
Subject: Re: ipu3-imgu 0000:00:05.0: required queues are disabled



On 01/28/2019 11:45 PM, Kai Heng Feng wrote:
> Hi Kieran,
>
>> On Jan 28, 2019, at 4:48 PM, Kieran Bingham <kieran.bingham@...asonboard.com> wrote:
>>
>> Hi Kai-Heng,
>>
>> On 27/01/2019 05:56, Kai-Heng Feng wrote:
>>> Hi,
>>>
>>> We have a bug report [1] that the ipu3 doesn’t work.
>>> Does ipu3 need special userspace to work?
>> Yes, it will need further userspace support to configure the pipeline,
>> and to provide 3A algorithms for white balance, focus, and exposure
>> times to the sensor.
>>
>> We are developing a stack called libcamera [0] to support this, but it's
>> still in active development and not yet ready for use. Fortunately
>> however, IPU3 is one of our primary initial targets.
> Thanks for the info.
Hi, Kai-Heng,

Like Bingham said, for IPU3 some heavy control from the userspace is needed.
libcamera is a very good start.
If you just want to verify the driver firstly, you can use script to take a try.
>> [0] https://www.libcamera.org/
>>
>>> [1] https://bugs.launchpad.net/bugs/1812114
>> I have reported similar information to the launchpad bug entry.
>>
>> It might help if we can get hold of a Dell 7275 sometime although I
>> think Mauro at least has one ?
>>
>> If this is a priority for Canonical, please contact us directly.
> Not really, just raise issues from Launchpad to appropriate mailing list.
>
> Kai-Heng
>
>>> Kai-Heng
>> --
>> Regards
>>
>> Kieran
>