From: Anton Vorontsov <avorontsov@ru•mvista.com>
To: Kumar Gala <galak@kernel•crashing.org>
Cc: David Brownell <dbrownell@users•sourceforge.net>,
Greg Kroah-Hartman <greg@kroah•com>,
linux-usb@vger•kernel.org, linux-kernel@vger•kernel.org,
linuxppc-dev@ozlabs•org,
Andrew Morton <akpm@linux-foundation•org>,
Li Yang <leoli@freescale•com>, Timur Tabi <timur@freescale•com>
Subject: Re: [PATCH 2/4] powerpc/qe: new call to revert a gpio to a dedicated function
Date: Wed, 24 Sep 2008 15:42:31 +0400 [thread overview]
Message-ID: <20080924114231.GA8469@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <B8BAAB1F-10B5-419D-84A7-F724A7E77F41@kernel.crashing.org>
On Tue, Sep 23, 2008 at 11:07:00PM -0500, Kumar Gala wrote:
>
> On Sep 23, 2008, at 7:03 PM, Anton Vorontsov wrote:
>
>> qe_gpio_set_dedicated() is a platform specific function, which is used
>> to revert a pin to a dedicated function. Caller should have already
>> obtained the gpio via gpio_request().
>>
>> This is needed to support Freescale USB Host Controller.
>>
>> Signed-off-by: Anton Vorontsov <avorontsov@ru•mvista.com>
>> ---
>> arch/powerpc/include/asm/qe.h | 1 +
>> arch/powerpc/sysdev/qe_lib/gpio.c | 46 ++++++++++++++++++++++++++++
>> +++++++++
>> 2 files changed, 47 insertions(+), 0 deletions(-)
>
> what do you mean by dedicated function.. be a bit clearer in the commit
> log.
This term is from the QE spec, I didn't invent anything. ;-)
"Each pin in the I/O ports can be configured as a general-purpose
I/O signal or as a dedicated peripheral interface signal. ...many
dedicated peripheral functions are multiplexed onto the ports."
> Also, does this depend on gpio_to_chip() patch?
Yeah, the point of exported gpio_to_chip is to let us write
this function.
Thanks!
--
Anton Vorontsov
email: cbouatmailru@gmail•com
irc://irc.freenode.net/bd2
next prev parent reply other threads:[~2008-09-24 11:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-24 0:02 [PATCH 0/4] FHCI USB Host support patches Anton Vorontsov
2008-09-24 0:03 ` [PATCH 1/4] gpiolib: make gpio_to_chip() public Anton Vorontsov
2008-09-24 0:03 ` [PATCH 2/4] powerpc/qe: new call to revert a gpio to a dedicated function Anton Vorontsov
2008-09-24 4:07 ` Kumar Gala
2008-09-24 11:42 ` Anton Vorontsov [this message]
2008-09-24 14:00 ` Kumar Gala
2008-09-24 14:11 ` Anton Vorontsov
2008-09-24 18:54 ` David Brownell
2008-09-24 18:54 ` David Brownell
2008-09-24 23:29 ` Anton Vorontsov
2008-09-25 4:13 ` David Brownell
2008-09-24 0:03 ` [PATCH 3/4] USB: Protect hcd.h from multiple inclusions Anton Vorontsov
2008-09-24 3:35 ` David Brownell
2008-09-24 0:03 ` [PATCH 4/4] USB: driver for Freescale QUICC Engine USB Host Controller Anton Vorontsov
-- strict thread matches above, loose matches on Subject: below --
2008-09-24 18:20 [PATCH v3 0/4] FHCI USB Host support patches Anton Vorontsov
2008-09-24 18:21 ` [PATCH 2/4] powerpc/qe: new call to revert a gpio to a dedicated function Anton Vorontsov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080924114231.GA8469@oksana.dev.rtsoft.ru \
--to=avorontsov@ru$(echo .)mvista.com \
--cc=akpm@linux-foundation$(echo .)org \
--cc=dbrownell@users$(echo .)sourceforge.net \
--cc=galak@kernel$(echo .)crashing.org \
--cc=greg@kroah$(echo .)com \
--cc=leoli@freescale$(echo .)com \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linux-usb@vger$(echo .)kernel.org \
--cc=linuxppc-dev@ozlabs$(echo .)org \
--cc=timur@freescale$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox