From: Anton Vorontsov <avorontsov@ru.mvista.com>
To: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Cc: linuxppc-dev@ozlabs.org, dbrownell@users.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: Re: Ang: Re: [PATCH 0/2] Setting GPIOs simultaneously
Date: Tue, 4 Aug 2009 19:33:07 +0400 [thread overview]
Message-ID: <20090804153307.GA27107@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <OFC7025845.8BE60C98-ONC1257608.0051D318-C1257608.00525388@transmode.se>
On Tue, Aug 04, 2009 at 04:59:13PM +0200, Joakim Tjernlund wrote:
[...]
> hmm, this looks promising. Can I write my own board-specific-csm
> and attach it to the SPI CS engine?
Yes, you'd able to do it, but there is no such thing as SPI CS
engine, yet.
See the two options of how we can implement it:
http://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg34738.html
Grant said that he like option "2.", but also said that we might
want to modify SPI requests (messages) before sending the data to
the outside world. I think that the option "1." fits better for
this task. Which means that implementation should be quite
trivial -- just another spi master driver.
> [...] the 8xxx SPI driver only looks for gpio functions.
Yes, and we should consider removing the gpio stuff too.
> Perhaps this is something that you are working on?
No, I don't need the feature right now (i.e. no board that I'm
working on needs this). But I know how to implement it (see the
link above).
--
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2
next prev parent reply other threads:[~2009-08-04 15:33 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-13 15:19 [PATCH 0/2] Setting GPIOs simultaneously Anton Vorontsov
2009-07-13 15:19 ` [PATCH 1/2] gpiolib: Implement gpio_set_values_sync() Anton Vorontsov
2009-07-13 15:19 ` [PATCH 2/2] powerpc/qe: Implement set_sync() callback for QE GPIOs Anton Vorontsov
2009-07-13 16:01 ` [PATCH 0/2] Setting GPIOs simultaneously Joakim Tjernlund
2009-07-13 17:34 ` Anton Vorontsov
2009-07-13 19:59 ` Joakim Tjernlund
2009-07-13 22:20 ` Anton Vorontsov
2009-07-14 21:20 ` Ang: " Joakim Tjernlund
2009-07-14 22:09 ` Anton Vorontsov
2009-08-04 13:38 ` Joakim Tjernlund
2009-08-04 14:22 ` Anton Vorontsov
2009-08-04 14:59 ` Joakim Tjernlund
2009-08-04 15:33 ` Anton Vorontsov [this message]
[not found] ` <OFF188389D.68E638A2-ONC12575F2.00568C5B-C12575F2.0057FC95@LocalDomain>
2009-07-13 17:17 ` Joakim Tjernlund
2009-11-05 14:49 ` Kumar Gala
2009-11-05 14:58 ` Anton Vorontsov
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