linux-kernel - Re: [PATCH v2] iio: exynos-adc: add experimental touchscreen support

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Message-ID: <1743122.0WWLup698P@diego>
Date:	Sun, 27 Jul 2014 23:50:51 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	Hartmut Knaack <knaack.h@....de>
Cc:	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-iio@...r.kernel.org,
	kgene.kim@...sung.com, pawel.moll@....com, t.figa@...sung.com,
	linux-kernel@...r.kernel.org, Chanwoo Choi <cw00.choi@...sung.com>,
	kyungmin.park@...sung.com, linux-samsung-soc@...r.kernel.org,
	Jonathan Cameron <jic23@...nel.org>,
	Ben Dooks <ben-linux@...ff.org>, galak@...eaurora.org,
	ch.naveen@...sung.com, linux-input <linux-input@...r.kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: Re: [PATCH v2] iio: exynos-adc: add experimental touchscreen support

Am Sonntag, 27. Juli 2014, 23:10:21 schrieb Hartmut Knaack:
> Arnd Bergmann schrieb:
> > @@ -205,6 +217,9 @@ static void exynos_adc_v1_init_hw(struct exynos_adc
> > *info)> 
> >  	/* Enable 12-bit ADC resolution */
> >  	con1 |= ADC_V1_CON_RES;
> >  	writel(con1, ADC_V1_CON(info->regs));
> > 
> > +
> > +	/* set default touchscreen delay */
> 
> Any information about how many µs/ms it is actually set with this value?

"ADC conversion is delayed by counting this value. Counting clock is pclk."
So, I guess here 10000 pclk ticks.


Heiko

> 
> > +	writel(10000, ADC_V1_DLY(info->regs));
> > 
> >  }
> >  

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