From: plagnioj@jcrosoft•com (Jean-Christophe PLAGNIOL-VILLARD)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH RFC 1/2] gpio: Add a block GPIO API to gpiolib
Date: Sat, 29 Sep 2012 21:57:54 +0200 [thread overview]
Message-ID: <20120929195754.GC17667@game.jcrosoft.org> (raw)
In-Reply-To: <5065ED4F.5070700@antcom.de>
On 20:32 Fri 28 Sep , Roland Stigge wrote:
> Hi,
>
> On 28/09/12 18:01, Jean-Christophe PLAGNIOL-VILLARD wrote:
> >>Maybe like this, for some struct block *?
> >>
> >>block = set_block_prepare(gc, pins, values, size);
> >>if (block) {
> >> set_block(gc, block);
> >> ...
> >> set_block_unprepare(gc, block);
> >>}
> >>
> >>Would mean that all supported drivers would need to implement those 3
> >>new functions... Need to be careful about not introducing bloat...
> >the prepare is gpiolib specific, it will be a helper to conver a gpio list to
> >a gpio block list
> >
> >I was thinking more
> >
> >block = gpio_block_prepare(pins, size);
> >
> >gpio_block_set_value(pin0, val);
> >gpio_block_set_value(pin1, val);
> >gpio_block_set_value(pin2, val);
> >gpio_block_set(block);
> >
> >andfor get
> >
> >gpio_block_get(block)
> >val = gpio_block_get_value(block, pin0);
> >val = gpio_block_get_value(block, pin1);
> >
> >for the gpio driver ti's transparent
>
> Problem here is that it's only an intermediate format since hardware
> often needs special preparation of the data.
>
> But will evaluate what makes most sense.
the key point here is to avoid to manipualte data each time we call
gpio_block_set
hardware specific will have to be handle at driver level
Best Regards,
J.
next prev parent reply other threads:[~2012-09-29 19:57 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-27 21:22 [PATCH RFC 1/2] gpio: Add a block GPIO API to gpiolib Roland Stigge
2012-09-27 21:22 ` [PATCH RFC 2/2] gpio-max730x: Add block GPIO API Roland Stigge
2012-09-28 2:47 ` [PATCH RFC 1/2] gpio: Add a block GPIO API to gpiolib Jean-Christophe PLAGNIOL-VILLARD
2012-09-28 7:14 ` Roland Stigge
2012-09-28 7:51 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-28 8:51 ` Roland Stigge
2012-09-28 9:08 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-28 9:23 ` Roland Stigge
2012-09-28 10:28 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-28 11:32 ` Roland Stigge
2012-09-28 16:01 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-28 18:32 ` Roland Stigge
2012-09-29 19:57 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2012-09-30 10:34 ` Roland Stigge
2012-09-30 15:11 ` Stijn Devriendt
2012-09-28 9:14 ` Linus Walleij
2012-09-28 9:52 ` Roland Stigge
2012-09-28 11:34 ` Linus Walleij
2012-09-28 12:35 ` Roland Stigge
2012-09-30 9:35 ` Stijn Devriendt
2012-09-30 10:50 ` Roland Stigge
2012-09-30 14:52 ` Stijn Devriendt
2012-09-30 15:09 ` Roland Stigge
2012-09-30 15:19 ` Stijn Devriendt
2012-09-30 15:46 ` Roland Stigge
2012-10-03 23:11 ` Linus Walleij
2012-10-03 23:07 ` Linus Walleij
2012-10-04 20:25 ` Roland Stigge
2012-10-03 19:08 ` Mark Brown
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