linux-kernel - Re: [PATCH v6 0/8] ptp: IEEE 1588 hardware clock support

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Message-ID: <20100924131407.GA3113@riccoc20.at.omicron.at>
Date:	Fri, 24 Sep 2010 15:14:07 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux-kernel@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-api@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Lameter <cl@...ux.com>,
	David Miller <davem@...emloft.net>,
	John Stultz <johnstul@...ibm.com>,
	Krzysztof Halasa <khc@...waw.pl>,
	Peter Zijlstra <peterz@...radead.org>,
	Rodolfo Giometti <giometti@...ux.it>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v6 0/8] ptp: IEEE 1588 hardware clock support

On Thu, Sep 23, 2010 at 09:36:54PM +0100, Alan Cox wrote:
> Drop the clockid_t and swap it for a file handle like a proper Unix or
> Linux interface. The rest is much the same
> 
> 	fd = open /sys/class/timesource/[whatever]
> 
> 	various queries you may want to do to check the name etc
> 
> 	fclock_adjtime(fd, ...)

Okay, but lets extend the story:

	clock_getttime(fd, ...);

	clock_settime(fd, ...);

	timer_create(fd, ...);

Can you agree to that as well?

(We would need to ensure that 'fd' avoids the range 0 to MAX_CLOCKS).

Richard
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