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From: Darius <augulis.darius@gmail.com>
To: linux-arm-kernel@lists.arm.linux.org.uk
Cc: i2c@lm-sensors.org
Subject: Re: [i2c] [PATCH V6] I2C driver for IMX
Date: Mon, 16 Jun 2008 11:32:22 +0300	[thread overview]
Message-ID: <g358q6$m2f$1@ger.gmane.org> (raw)
In-Reply-To: <20080615235601.GB30539@fluff.org.uk>

Ben Dooks wrote:
> On Thu, Jun 12, 2008 at 03:16:27PM +0300, Darius wrote:
>>>> +static struct platform_driver i2c_imx_driver = {
>>>> +	.probe	= i2c_imx_probe,
>>>> +	.remove	= i2c_imx_remove,
>>>> +	.driver	= {
>>>> +		.name	= DRIVER_NAME,
>>>> +		.owner	= THIS_MODULE,
>>>> +	}
>>>> +};
>>> No suspend/resume support? See above note on ordering.
>>>
>> There are nothing to do in suspend/resume routines, because no possibility to turn off I2C clock.
>> I2C module itself is disabled every time when data is not transmited.
>> Seems, that there are only few I2C drivers (at91, blackfin, pnx) with suspend/resume suport.
>> Most drivers has not suspend/resume support.
> 
> It depends, does the hardware keep the peripheral state during
> suspend?

yes, all registers remains unchanged.

> 
>> Should I declare empty suspend/resume routines with return 0; only?
> 
> No, the system ignores NULL suspend/resume entries.

also, I'll don't implement suspend, because no reason to do so.
I have next patch version with other your comments corrected.

>  
>> _______________________________________________
>> i2c mailing list
>> i2c@lm-sensors.org
>> http://lists.lm-sensors.org/mailman/listinfo/i2c
> 



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      reply	other threads:[~2008-06-16  8:32 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-20  6:41 [PATCH V6] I2C driver for IMX Darius
2008-06-01 22:09 ` [i2c] " Ben Dooks
2008-06-12 12:16   ` Darius
2008-06-15 23:56     ` Ben Dooks
2008-06-16  8:32       ` Darius [this message]

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