[PATCH 2/7] imx/gpio: make gpio_get_value actually work

[Wolfram Sang]

On Mon, Apr 19, 2010 at 10:54:27AM +0200, Uwe Kleine-König wrote:
> Hello,
> 
> On Mon, Apr 19, 2010 at 10:28:13AM +0200, Wolfram Sang wrote:
> > From: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> > 
> > Newer i.MX-variants can route the content of the Sample Status Register to the
> > Data Register, but older ones can't. So, use the Sample Register to be generic.
> > As a drawback, the ability to read back the values of output GPIOs is lost.
> AFAIK the last sentence (that was authored by Wolfram, though the patch
> is mine) is wrong.  I checked mx27 and mx35 specs and both the overview
> and the actual description suggest that reading output values works
> (using PSR aka SSR) when the iomuxer is configured for GPIO.

Might be that I misinterpreted something. Sascha, can you second Uwe?

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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