linux-kernel - Re: Vibrations on Droid 4?

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Message-ID: <20180710133040.GA4391@amd>
Date:   Tue, 10 Jul 2018 15:30:40 +0200
From:   Pavel Machek <pavel@....cz>
To:     Sebastian Reichel <sre@...nel.org>
Cc:     kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, tony@...mide.com, nekit1000@...il.com,
        mpartap@....net, merlijn@...zup.org
Subject: Re: Vibrations on Droid 4?

On Tue 2018-07-10 12:11:47, Sebastian Reichel wrote:
> Hi,
> 
> On Tue, Jul 10, 2018 at 12:02:11AM +0200, Pavel Machek wrote:
> > Hi!
> > 
> > > > Do you have vibrations on d4 working?
> > > > I believe I have required drivers enabled, but no luck:
> > > > 
> > > > user@...uan:/sys/bus/platform/drivers$ ls pwm-vibrator/
> > > > bind  uevent  unbind
> > > > user@...uan:/sys/bus/platform/drivers$ ls omap-dmtimer-pwm/
> > > > bind  uevent  unbind
> > > 
> > > Have you checked probe deferrals?
> > 
> > Not really. Is there easier way to do that than adding printks in the
> > probe function? (I can go through dmesg tommorow).
> 
> Option 1: https://lkml.org/lkml/2018/7/8/63

I tried this methodq, and no luck.

static int pwm_omap_dmtimer_probe(struct platform_device *pdev)

does not seem to be called.

Its parent is gpio@...5d000 , and that one seems to be present.

user@...uan:/sys/bus/platform/devices$ ls 4805d000.gpio
driver				       driver_override  gpio
gpiochip5  modalias  of_node  power  subsystem  uevent

So I'm now confused.

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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