lkml.org 
[lkml]   [2022]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v10 0/5] media: atmel: atmel-isc: implement media controller
From
Hi Eugen,

On 22/06/2022 14:25, Eugen.Hristev@microchip.com wrote:
> On 6/22/22 2:53 PM, Hans Verkuil wrote:
>> Hi Eugen,
>>
>> On 03/05/2022 11:51, Eugen Hristev wrote:
>>> This series is a split from the series :
>>> [PATCH v9 00/13] media: atmel: atmel-isc: implement media controller
>>> and it includes the media controller part.
>>> previous fixes were sent on a different patch series.
>>>
>>> As discussed on the ML, moving forward with having the media link validate at
>>> start/stop streaming call.
>>> I will test the patch :
>>> [RFC PATCHv2] vb2: add support for (un)prepare_streaming queue ops
>>> afterwards, but that patch requires moving my logic to the new vb2 callbacks.
>>
>> I'm looking at merging this series, but I would like to have the output of
>> 'v4l2-compliance -m /dev/mediaX' to verify that the MC links etc. is all
>> correct.
>
> Hello Hans,
>
> Please have a look at attached file . Unless you want me to add the
> whole output to the e-mail ?

No, this is fine, thank you!

>
> I also added output of media-ctl -p for your convenience.
> the subdev2 is a device and driver that is not upstream and has some
> compliance issues, they are reported by the v4l2-compliance tool, but
> they should not affect this series, it's a synopsys driver that was
> rejected on mainline a few years ago, I took it for internal usage, but
> it's not cleaned up nor worked a lot upon.

OK, good to know.

From the compliance output:

v4l2-compliance 1.22.1, 32 bits, 32-bit time_t

This is an old v4l2-compliance version. Compile it directly from the
v4l-utils git repo and check the output again.

Compliance test for atmel_isc_commo device /dev/media0:

As you can see, the driver name is cut off. Isn't 'atmel-isc'
a better name?

>
>>
>> And one more question which may have been answered already in the past:
>>
>> Changing to the MC will break existing applications, doesn't it? Or did I
>> miss something?
>>
>
> The existing applications will have to configure the pipeline now. It
> will no longer work by configuring just the top video node /dev/video0 .
> They would have to use media-ctl for it, something similar with this set
> of commands:
>
> media-ctl -d /dev/media0 --set-v4l2 '"imx219
> 1-0010":0[fmt:SRGGB10_1X10/1920x1080]'
> media-ctl -d /dev/media0 --set-v4l2
> '"dw-csi.0":0[fmt:SRGGB10_1X10/1920x1080]'
> media-ctl -d /dev/media0 --set-v4l2 '"csi2dc":0[fmt:SRGGB10_1X10/1920x1080]'
> media-ctl -d /dev/media0 --set-v4l2
> '"atmel_isc_scaler":0[fmt:SRGGB10_1X10/1920x1080]'

I'd like to see this documented in a new
Documentation/admin-guide/media/atmel-isc.rst file. That can be a new patch.

Regards,

Hans

>
> Thank you for taking care of this !
>
> Eugen
>
>> Regards,
>>
>> Hans
>>
>>>
>>> Full series history:
>>>
>>> Changes in v10:
>>> -> split the series into this first fixes part.
>>> -> moved IO_MC addition from first patch to the second patch on the driver changes
>>> -> edited commit messages
>>> -> DT nodes now disabled by default.
>>>
>>> Changes in v9:
>>> -> kernel robot reported isc_link_validate is not static, changed to static.
>>>
>>> Changes in v8:
>>> -> scaler: modified crop bounds to have the exact source size
>>>
>>> Changes in v7:
>>> -> scaler: modified crop bounds to have maximum isc size
>>> -> format propagation: did small changes as per Jacopo review
>>>
>>>
>>> Changes in v6:
>>> -> worked a bit on scaler, added try crop and other changes as per Jacopo review
>>> -> worked on isc-base enum_fmt , reworked as per Jacopo review
>>>
>>> Changes in v5:
>>> -> removed patch that removed the 'stop' variable as it was still required
>>> -> added two new trivial patches
>>> -> reworked some parts of the scaler and format propagation after discussions with Jacopo
>>>
>>>
>>> Changes in v4:
>>> -> as reviewed by Hans, added new patch to remove the 'stop' variable and reworked
>>> one patch that was using it
>>> -> as reviewed by Jacopo, reworked some parts of the media controller implementation
>>>
>>>
>>> Changes in v3:
>>> - change in bindings, small fixes in csi2dc driver and conversion to mc
>>> for the isc-base.
>>> - removed some MAINTAINERS patches and used patterns in MAINTAINERS
>>>
>>> Changes in v2:
>>> - integrated many changes suggested by Jacopo in the review of the v1 series.
>>> - add a few new patches
>>>
>>> Eugen Hristev (5):
>>> media: atmel: atmel-isc: prepare for media controller support
>>> media: atmel: atmel-isc: implement media controller
>>> ARM: dts: at91: sama7g5: add nodes for video capture
>>> ARM: configs: at91: sama7: add xisc and csi2dc
>>> ARM: multi_v7_defconfig: add atmel video pipeline modules
>>>
>>> arch/arm/boot/dts/sama7g5.dtsi | 51 ++
>>> arch/arm/configs/multi_v7_defconfig | 3 +
>>> arch/arm/configs/sama7_defconfig | 2 +
>>> drivers/media/platform/atmel/Makefile | 2 +-
>>> drivers/media/platform/atmel/atmel-isc-base.c | 485 +++++++++---------
>>> .../media/platform/atmel/atmel-isc-scaler.c | 267 ++++++++++
>>> drivers/media/platform/atmel/atmel-isc.h | 50 +-
>>> .../media/platform/atmel/atmel-sama5d2-isc.c | 34 +-
>>> .../media/platform/atmel/atmel-sama7g5-isc.c | 32 +-
>>> 9 files changed, 685 insertions(+), 241 deletions(-)
>>> create mode 100644 drivers/media/platform/atmel/atmel-isc-scaler.c
>>>
>>
>

\
 
 \ /
  Last update: 2022-06-22 15:38    [W:0.123 / U:0.236 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site