linux-kernel - Re: [PATCH v3 2/5] i2c: mv64xxx: Add support for the Allwinner A31 I2C driver

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Date:	Fri, 7 Mar 2014 11:13:48 +0100
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
	kevin.z.m.zh@...il.com, sunny@...winnertech.com,
	shuge@...winnertech.com, zhuzhenhua@...winnertech.com
Subject: Re: [PATCH v3 2/5] i2c: mv64xxx: Add support for the Allwinner A31
 I2C driver

Hi Wolfram,

On Wed, Mar 05, 2014 at 05:34:30PM +0100, Wolfram Sang wrote:
> On Tue, Mar 04, 2014 at 05:28:38PM +0100, Maxime Ripard wrote:
> > The Allwinner A31 I2C controller is almost identical to the one used in the
> > other Allwinner SoCs, except for the fact that it needs to clear the interrupt
> > by setting the INT_FLAGS bit in the control register, instead of clearing it.
> > 
> > Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> > Reviewed-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
> > Tested-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
> 
> Applied to for-next, thanks!
> 
> Still...
> 
> > +	if (of_device_is_compatible(np, "allwinner,sun6i-a31-i2c"))
> > +		drv_data->irq_clear_inverted = true;
> 
> ... next time an errata is needed, I think it makes sense to refactor all
> these checks into one struct which can be used as match->data directly.

Yep, it makes sense. Thanks!

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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