linux-kernel - Re: [PATCH] rtc-ds1307: True SMBus compatibility

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Message-ID: <9ae48b020901070743x1a5eaf72k5314cd969dc580ef@mail.gmail.com>
Date:	Wed, 7 Jan 2009 07:43:18 -0800
From:	"Ed Swierk" <eswierk@...stanetworks.com>
To:	"Jean Delvare" <khali@...ux-fr.org>
Cc:	linux-i2c@...r.kernel.org, "David Brownell" <david-b@...bell.net>,
	"Alessandro Zummo" <a.zummo@...ertech.it>,
	linux-kernel@...r.kernel.org,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"BARRE Sebastien" <sbarre@...lcc.com>
Subject: Re: [PATCH] rtc-ds1307: True SMBus compatibility

On Wed, Jan 7, 2009 at 7:27 AM, Jean Delvare <khali@...ux-fr.org> wrote:
> Did you try 0x4a (as i2c-amd8111 is using)?

Yes, it returns an error, as do all the other unsupported commands.

> So, you have the datasheet... Is this something you would be allowed to
> share with me?

Unfortunately not; we acquired it under an NDA.

>> I could change the ds1307 driver to check whether the controller
>> supports i2c block commands and fall back to emulation only if they
>> are not available. Would that address your concerns?
>
> Yes, that would. Same thing the eeprom or lm93 drivers are doing, to
> only name a few of them. Should be fairly easy.

OK, will do.

--Ed
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