linux-kernel - Re: [PATCH 1/2] leds: cpcap: new driver

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Message-ID: <20170411201903.GA14911@amd>
Date:   Tue, 11 Apr 2017 22:19:03 +0200
From:   Pavel Machek <pavel@....cz>
To:     Sebastian Reichel <sre@...nel.org>
Cc:     Tony Lindgren <tony@...mide.com>,
        Richard Purdie <rpurdie@...ys.net>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] leds: cpcap: new driver

Hi!

> On Mon, Mar 06, 2017 at 11:11:47PM +0100, Pavel Machek wrote:
> > > Motorola CPCAP is a PMIC found in multiple smartphones.
> > > This driver adds support for the chip's LED controllers.
> > > It has explicit support for all controllers used by the
> > > Droid 4. Since no datasheets are available the other
> > > available controllers are not supported until somebody
> > > verified, that the register layout matches.
> > 
> > This of course leads me to two questions:
> > 
> > 1) Where can I get Droid 4?
> 
> I got a used one on Ebay for 42€ incl. shipping & customs. The trick
> is clicking the worldwide option, since they are pretty expensive in
> EU (they only exist with US LTE modem, so they were not sold here
> officially).
> 
> > 2) How well is it supported?
> 
> UART + WLAN works with mainline master branch. As written by Tony
> we have a couple of patches ready for 4.12. Big open tasks are the
> cameras and the modems. Cameras are handled via co-processor in the
> stock system (that's about all I know about them so far) and modems are
> connected via USB + GPIOs (and for the 2G/3G modem an additional UART).
> LTE modem support seems simple (USB-CDC based), but does not work
> in EU and 2G/3G looks like much work. Modem voice support will be
> simpler than on N900, though (data goes directly to the audio codec).
> Speaking about audio codec: I'm currently working on that.

Thanks for all the information. It looks like a nice and powerful
machine, but I'm looking for a phone, first. (I'd actually like
something smaller than n900, preferably 3 times smaller... but... as
long as it calls it will have to do :-) ).

Best regards,
								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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