From: tony@atomide•com (Tony Lindgren)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 3/3] omap: add hwspinlock device
Date: Fri, 22 Oct 2010 10:28:10 -0700 [thread overview]
Message-ID: <20101022172809.GB17595@atomide.com> (raw)
In-Reply-To: <20101022170330.GC9445@angua.secretlab.ca>
* Grant Likely <grant.likely@secretlab•ca> [101022 09:54]:
> On Fri, Oct 22, 2010 at 09:56:13AM -0700, Tony Lindgren wrote:
> > * Ohad Ben-Cohen <ohad@wizery•com> [101020 12:12]:
> > > On Wed, Oct 20, 2010 at 8:37 PM, Kevin Hilman
> > > <khilman@deeprootsystems•com> wrote:
> > > >> Let's take the i2c-omap for example.
> > > >>
> > > >> It sounds like it must have a predefined hwspinlock, but what if:
> > > >>
> > > >> 1. It will use omap_hwspinlock_request() to dynamically allocate a hwspinlock
> > > >> 2. Obviously, the hwspinlock id number must be communicated to the M3
> > > >> BIOS, so the i2c-omap will publish that id using a small shared memory
> > > >> entry that will be allocated for this sole purpose
> > > >> 3. we will make sure that 1+2 completes before the remote processor is
> > > >> taken out of reset
> >
> > Guys, let's try to come up with a generic interface for this instead of
> > polluting the device drivers with more omap specific interfaces.
> >
> > We really want to keep the drivers generic and platform independent.
> >
> > Sure we still have some omap specific stuff in the drivers, like
> > cpu_is_omapxxxx, and omap specific dma calls, but those will be going
> > away.
> >
> > Unless somebody has better ideas, I suggest we pass a lock function
> > in the platform_data to the drivers that need it, and do the omap
> > specific nasty stuff in the platform code.
>
> For those of you going to plumbers, I'll put this on the embedded
> microconference agenda when we're talking about common infrastructure.
Great, thanks.
Tony
next prev parent reply other threads:[~2010-10-22 17:28 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-18 7:44 [PATCH 0/3] Add OMAP hardware spinlock misc driver Ohad Ben-Cohen
2010-10-18 7:44 ` [PATCH 1/3] drivers: misc: add omap_hwspinlock driver Ohad Ben-Cohen
2010-10-19 15:46 ` Greg KH
2010-10-19 20:18 ` Ohad Ben-Cohen
2010-10-19 16:58 ` Kevin Hilman
2010-10-19 20:21 ` Ohad Ben-Cohen
2010-10-19 17:01 ` Grant Likely
2010-10-19 20:43 ` Ohad Ben-Cohen
2010-10-19 20:58 ` Arnd Bergmann
2010-10-19 21:57 ` Ohad Ben-Cohen
2010-10-19 17:16 ` Kevin Hilman
2010-10-20 13:00 ` Ohad Ben-Cohen
2010-10-20 18:18 ` Kevin Hilman
2010-10-19 17:21 ` Arnd Bergmann
2010-10-19 20:51 ` Ohad Ben-Cohen
2010-10-19 21:08 ` Arnd Bergmann
2010-10-20 22:43 ` Ohad Ben-Cohen
2010-10-21 9:04 ` Arnd Bergmann
2010-10-21 10:13 ` Ohad Ben-Cohen
2010-10-21 12:02 ` Arnd Bergmann
2010-10-22 17:00 ` Tony Lindgren
2010-10-18 7:44 ` [PATCH 2/3] OMAP4: hwmod data: Add hwspinlock Ohad Ben-Cohen
2010-10-18 7:44 ` [PATCH 3/3] omap: add hwspinlock device Ohad Ben-Cohen
2010-10-19 17:03 ` Kevin Hilman
2010-10-19 17:05 ` Grant Likely
2010-10-19 21:02 ` Ohad Ben-Cohen
2010-10-19 23:12 ` Grant Likely
2010-10-20 14:09 ` Ohad Ben-Cohen
2010-10-20 15:51 ` Grant Likely
2010-10-19 23:53 ` Kevin Hilman
2010-10-20 1:20 ` Ryan Mallon
2010-10-20 14:38 ` Ohad Ben-Cohen
2010-10-20 15:55 ` Grant Likely
2010-10-20 18:37 ` Kevin Hilman
2010-10-20 19:21 ` Ohad Ben-Cohen
2010-10-20 23:58 ` Kevin Hilman
2010-10-21 6:11 ` Ohad Ben-Cohen
2010-10-21 8:36 ` Kamoolkar, Mugdha
2010-10-21 9:06 ` Ohad Ben-Cohen
2010-10-22 9:59 ` Kamoolkar, Mugdha
2010-10-22 11:16 ` Ohad Ben-Cohen
2010-10-21 12:26 ` Kanigeri, Hari
2010-10-22 10:14 ` Kamoolkar, Mugdha
2010-10-22 16:56 ` Tony Lindgren
2010-10-22 17:03 ` Grant Likely
2010-10-22 17:28 ` Tony Lindgren [this message]
2010-10-24 17:54 ` Ohad Ben-Cohen
2010-10-25 19:02 ` Tony Lindgren
2010-10-26 11:54 ` Ohad Ben-Cohen
2010-10-26 19:06 ` Tony Lindgren
2010-10-18 12:46 ` [PATCH 0/3] Add OMAP hardware spinlock misc driver Peter Zijlstra
2010-10-18 13:35 ` Russell King - ARM Linux
2010-10-18 13:43 ` Peter Zijlstra
2010-10-18 14:28 ` Ohad Ben-Cohen
2010-10-18 14:33 ` Peter Zijlstra
2010-10-18 14:39 ` Ohad Ben-Cohen
2010-10-18 15:27 ` Catalin Marinas
2010-10-18 15:32 ` Peter Zijlstra
2010-10-18 15:35 ` Ohad Ben-Cohen
2010-10-18 15:48 ` Peter Zijlstra
2010-10-18 15:51 ` Catalin Marinas
2010-10-18 15:58 ` Peter Zijlstra
2010-10-19 23:31 ` Daniel Walker
2010-10-20 6:13 ` Ohad Ben-Cohen
2010-10-20 10:00 ` Ohad Ben-Cohen
2010-10-20 22:29 ` Bryan Huntsman
2010-10-20 9:53 ` Russell King - ARM Linux
2010-10-20 22:15 ` Daniel Walker
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=20101022172809.GB17595@atomide.com \
--to=tony@atomide$(echo .)com \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/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