linux-kernel - Re: [PATCH v2 00/15] staging: vc04

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Message-ID: <45c0e7bbb2ed91ec559cdbf2d19ad80e@suse.de>
Date:   Thu, 16 Nov 2023 12:54:10 +0200
From:   "Ivan T. Ivanov" <iivanov@...e.de>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Stefan Wahren <wahrenst@....net>,
        Umang Jain <umang.jain@...asonboard.com>,
        Peter Robinson <pbrobinson@...il.com>,
        linux-media@...r.kernel.org, kernel-list@...pberrypi.com,
        linux-kernel@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-staging@...ts.linux.dev,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Kieran Bingham <kieran.bingham@...asonboard.com>,
        "Ricardo B . Marliere" <ricardo@...liere.net>,
        Dan Carpenter <error27@...il.com>,
        Guillaume GARDET <guillaume.gardet@...nsuse.org>
Subject: Re: [PATCH v2 00/15] staging: vc04_services: bcm2835-isp support


Hi,

On 2023-11-16 02:50, Laurent Pinchart wrote:
> On Wed, Nov 15, 2023 at 09:57:52PM +0100, Stefan Wahren wrote:
>> Hi Laurent,
>> 
>> [add Ivan & Peter]
>> 
>> Am 15.11.23 um 20:59 schrieb Laurent Pinchart:
>> > Hello,
>> >
>> > On Thu, Nov 09, 2023 at 04:02:52PM -0500, Umang Jain wrote:
>> >> This series aims to upport bcm2835-isp from the RPi kernel.
>> >> It is developed on top of staging-next which comprises many
>> >> VC04 changes for it's de-staging. Hence, the merge of this
>> >> driver is targeted when VC04 is de-staged completely (which I
>> >> have been pushing), but it can be helped getting reviewed meanwhile.
>> >> Hence, the reason for posting the series.
>> >
>> > Related question, what do people think about dropping the legacy
>> > firmware-based bcm2385-camera driver once this gets merged ?
>> > firmware-based camera operation is deprecated by Raspberry Pi, and
>> > doesn't work on the Pi 5
>> 
>> i don't remember exactly, but wasn't the bcm2835-camera required for 
>> Pi
>> Camera V1.3?
> 
> If I'm not mistaken (Dave can correct me), the legacy camera stack 
> works
> only with the Raspberry Pi official camera v1, v2 and HQ modules.
> Raspberry Pi has switched to a new camera stack based on libcamera,
> which works on the Pi Zero 2, Pi 3, Pi 4 and Pi 5. This new stack
> supports the same camera modules as the legacy stack, and many more. 
> The
> legacy stack doesn't work on Pi 5 at all.
> 
>> At the end cannot speak for the users. AFAIK OpenSuSE and Fedora use 
>> the
>> driver.

Guillaume (in CC) is more authoritative about this topic, but as long we 
have
smooth migration plan I am more than happy to switch to proper camera 
driver.

Regards,
Ivan