linux-kernel - Re: [PATCH 1/4] i2c: introduce i2c-cbus driver

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Message-ID: <20120904093142.GB855@harshnoise.musicnaut.iki.fi>
Date:	Tue, 4 Sep 2012 12:31:42 +0300
From:	Aaro Koskinen <aaro.koskinen@....fi>
To:	Felipe Balbi <balbi@...com>
Cc:	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-i2c@...r.kernel.org
Subject: Re: [PATCH 1/4] i2c: introduce i2c-cbus driver

On Tue, Sep 04, 2012 at 12:05:07PM +0300, Felipe Balbi wrote:
> > + * CBUS I2C driver for Nokia Internet Tablets.

[...]

> this version misses the entire IRQ handling we already had on linux-omap
> tree, so it's quite a regression.

There's no interrupts used in plain CBUS protocol/communication I think?

But Retu MFD supports the GPIO IRQ. I added the code for this set. And
the power button driver (patch 4/4) is using this functionality:

# cat /proc/interrupts
[...]
204:         29      GPIO  retu-mfd
224:         29      RETU  retu-pwrbutton

A.
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