linux-kernel - Re: [PATCH 8/9] bq27x00: Add miscdevice for each battery with ioctl for reading registers

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Date:	Sun, 27 Nov 2011 11:54:16 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Anton Vorontsov <cbouatmailru@...il.com>
Cc:	Pali Roh??r <pali.rohar@...il.com>, linux-kernel@...r.kernel.org,
	Lars-Peter Clausen <lars@...afoo.de>,
	syed rafiuddin <rafiuddin.sayed@...il.com>,
	Rodolfo Giometti <giometti@...ux.it>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: [PATCH 8/9] bq27x00: Add miscdevice for each battery with
 ioctl for reading registers

On Sat, Nov 26, 2011 at 02:04:48AM +0400, Anton Vorontsov wrote:

> What would be more practical, is to allow I2C core to provide
> userspace interface even for already bound I2C devices.

> That could be some kind of CONFIG_I2C_UNSAFE_DEBUG: when
> selected I2C core would allow access to all I2C devices. But still,
> the niche for such a feature is tiny, so I doubt that it is worth
> doing at all.

I don't know if it's applicable here but if this is a device that has
registers that fit within regmap then the regmap API provides a debugfs
interface for dumping the register map as standard.
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