From: Greg KH <gregkh@linuxfoundation.org>
To: Marcus Lorentzon <marcus.xm.lorentzon@stericsson.com>
Cc: arnd@arndb.de, marcus.lorentzon@linaro.org,
Daniel Vetter <daniel.vetter@ffwll.ch>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Subject: Re: Multiple parents in device driver model and Common Display Framework (CDF)
Date: Tue, 12 Feb 2013 14:02:09 -0800 [thread overview]
Message-ID: <20130212220209.GA23856@kroah.com> (raw)
In-Reply-To: <511A5A15.4000306@stericsson.com>
On Tue, Feb 12, 2013 at 04:04:53PM +0100, Marcus Lorentzon wrote:
> 3) Daniel V hinted that multiple parents (or multiple busses) is
> something that has been discussed as a limitation of device driver
> model before. And that maybe now was the time to fix that or at
> least sort out how to handle it.
No, it's the other way around, we have discussed ways about having
multiple drivers control a single device at the same time. The
"multiple parents" issue has come up a number of times with the power
management people, but they solved this by keeping a separate tree of
how to properly control and walk things to handle power domains and the
like.
sorry,
greg k-h
next prev parent reply other threads:[~2013-02-12 22:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-12 15:04 Multiple parents in device driver model and Common Display Framework (CDF) Marcus Lorentzon
2013-02-12 15:53 ` Tomi Valkeinen
2013-02-12 17:06 ` Marcus Lorentzon
2013-02-12 18:08 ` Tomi Valkeinen
2013-02-12 22:02 ` Greg KH [this message]
2013-02-12 22:20 ` Marcus Lorentzon
2013-02-12 22:29 ` Greg KH
2013-02-13 0:17 ` Arnd Bergmann
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