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From: marex@denx.de (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] IIO: Add basic MXS LRADC driver
Date: Tue, 10 Jul 2012 12:45:22 +0200	[thread overview]
Message-ID: <201207101245.23047.marex@denx.de> (raw)
In-Reply-To: <201207101241.24151.jbe@pengutronix.de>

Dear Juergen Beisert,

[...]

> > >> But wait, you're getting interrupts on channel 0. Doesn't seem quite
> > >> right. Did you happen to poke into the code and see where the issue
> > >> might be?
> > > 
> > > No yet. But if you think this is not the intended behaviour of your
> > > driver I will do a deeper look.
> > 
> > I don't know the hardware, but from what I've seen in the driver this
> > behavior looks correct. When reading a physical channel the channel will
> > be mapped to the first free virtual channel, afterward it is unmapped
> > again.
> 
> Makes sense.
> 
> > So if you are only reading a single channel it will always be mapped to
> > first virtual channel. If you'd be using buffered mode and read multiple
> > channels at once you'll probably get multiple interrupts on different
> > virtual channels.
> 
> So, the driver's behaviour is intended. Sorry for the noise.

Heh, my own driver confused me. I really better get back to this thing, I even 
have the touchscreen part in the works. Sorry for the confusion.

> Regards,
> Juergen

Best regards,
Marek Vasut

      reply	other threads:[~2012-07-10 10:45 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-04  2:15 [PATCH] IIO: Add basic MXS LRADC driver Marek Vasut
2012-07-04  4:30 ` Wolfgang Denk
2012-07-04  8:35 ` Lars-Peter Clausen
2012-07-04 23:48   ` Marek Vasut
2012-07-05  8:33     ` Lars-Peter Clausen
2012-07-05 19:53       ` Marek Vasut
2012-07-19 14:23       ` Marek Vasut
2012-07-19 14:33         ` Lars-Peter Clausen
2012-07-19 15:15           ` Marek Vasut
2012-07-19 19:26           ` Marek Vasut
2012-07-20  2:18             ` Marek Vasut
2012-07-20  8:39               ` Robert Schwebel
2012-07-20 11:32                 ` Marek Vasut
2012-07-20 14:09               ` Lars-Peter Clausen
2012-07-22 19:48                 ` Jonathan Cameron
2012-07-20 14:11             ` Lars-Peter Clausen
2012-07-20 15:12               ` Marek Vasut
2012-07-09  9:19 ` Juergen Beisert
2012-07-09  9:52   ` Lars-Peter Clausen
2012-07-09 10:03   ` Marek Vasut
2012-07-10  9:20     ` Juergen Beisert
2012-07-10  9:26       ` Marek Vasut
2012-07-10  9:49         ` Juergen Beisert
2012-07-10 10:08           ` Marek Vasut
2012-07-10 10:26             ` Juergen Beisert
2012-07-10 10:35               ` Lars-Peter Clausen
2012-07-10 10:41                 ` Juergen Beisert
2012-07-10 10:45                   ` Marek Vasut [this message]

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