On 11/22/2013 08:49 AM, Antony N. Pavlov wrote:
On Fri, 22 Nov 2013 08:20:08 +0100
Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote:
Hi Antony,
On Fri, Nov 22, 2013 at 12:11:24AM +0400, Antony Pavlov wrote:
Also import related functions gpio_request_one() and
gpio_free_array().
This commit imports code from linux 3.7 as
the more recent linux kernel versions use gpiolib descriptors,
see this commit for details:
commit 372e722ea4dd4ca11c3d04845e11cbc15f32144c
Author: Alexandre Courbot <acourbot@xxxxxxxxxx>
Date: Sun Feb 3 01:29:29 2013 +0900
gpiolib: use descriptors internally
Make sure gpiolib works internally with descriptors and (chip, offset)
pairs instead of using the global integer namespace. This prepares the
ground for the removal of the global gpio_desc[] array and the
introduction of the descriptor-based GPIO API.
Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
What a pitty, we duplicated some work. I created exactly the same patch
recently but haven't posted it yet, shame on me.
I must say "Thanks!" to Sebastian Hesselbarth. It's him who introduced
get_direction callback. His patch conflicted with patch in my local repo.
So I made the decision to post my patch as soon as possible.
I added that callback because I needed it for working on Marvell Berlin
support. Don't expect too fancy stuff, but as soon as I find some time
to work out the Chipidea USB device driver, I'll be posting patches for
Chromecast.
The get_direction callback gives valuable information for unknown HW :P
Sebastian
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