Re: [RFC] Move some soc-camera drivers to staging in preparation for removal

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Hi Laurent,

On Mon, 22 Feb 2016, Laurent Pinchart wrote:

[snip]

> As far as I know Renesas (or at least the kernel upstream team) doesn't care. 
> The driver is only used on five SH boards, I'd also say it can be removed.

[snip]

> > >> - atmel-isi: ATMEL Image Sensor Interface (ISI)
> > >> 
> > >>   I believe this is still actively maintained. Would someone be willing
> > >>   to convert this? It doesn't look like a complex driver.
> 
> That would be nice, I would like to avoid dropping this one.

Thanks for clarifying the state of the CEU driver. I did say, that I am 
fine with dropping soc-camera gradually, and I stay with that. But I see 
now, that at least two drivers want to stay active: Atmel ISI and PXA270. 
One possibility is of course to make them independent drivers. If people 
are prepared to invest work into that - sure, would be great! If we 
however decide to keep soc-camera, I could propose the following: IIUC, 
the largest problem is sensor drivers, that cannot be reused for other 
non-soc-camera bridge drivers. The thing is, out of all the sensor drivers 
currently under drivers/media/i2c/soc_camera only a couple are in use on 
those active PXA270 and Atmel boards. I could propose the following:

1. Remove all bridge drivers, that noone cares about.
2. If anyone ever needs to use any of soc-camera-associated sensor 
   drivers, take them out of soc-camera and _remove_ any soc-camera 
   dependencies
3. If any soc-camera boards will need that specific driver, which in 
   itself is already unlikely, we'll have to fix that by teaching 
   soc-camera to work with generic sensor drivers!

Thanks
Guennadi
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