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
prev parent 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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