From: Peter Korsgaard <jacmet@sunsite•dk>
To: Johnny Hung <johnny.hacking@gmail•com>
Cc: linuxppc-dev@lists•ozlabs.org, linux-embedded@vger•kernel.org
Subject: Re: GPIO driver for MPC8313.
Date: Wed, 23 Sep 2009 13:04:32 +0200 [thread overview]
Message-ID: <87r5txrkfz.fsf@macbook.be.48ers.dk> (raw)
In-Reply-To: <cb9ecdfa0909230352w77a37f59h3c7f1e146121f9f6@mail.gmail.com> (Johnny Hung's message of "Wed\, 23 Sep 2009 18\:52\:24 +0800")
>>>>> "Johnny" == Johnny Hung <johnny.hacking@gmail•com> writes:
Johnny> Thanks, got it. BTW, how to trigger GPIO level in user space
Johnny> application? I also found
Johnny> arch/powerpc/platforms/52xx/mpc52xx_gpio.c is a good
Johnny> example. Any reply is appreciate.
Through sysfs. See 'Sysfs Interface for Userspace' section of
Documentation/gpio.txt
--
Bye, Peter Korsgaard
next prev parent reply other threads:[~2009-09-23 11:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-23 3:55 GPIO driver for MPC8313 Johnny Hung
2009-09-23 6:57 ` Peter Korsgaard
2009-09-23 10:52 ` Johnny Hung
2009-09-23 11:04 ` Peter Korsgaard [this message]
2009-09-23 15:20 ` Johnny Hung
2009-09-28 2:43 ` Johnny Hung
2009-09-28 5:16 ` Peter Korsgaard
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