linux-kernel - Re: [PATCH 1/3] regmap: Properly round reg_bytes and val

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Message-ID: <20120128011403.GA6669@pengutronix.de>
Date:	Sat, 28 Jan 2012 02:14:03 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	Liam Girdwood <lrg@...com>,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH 1/3] regmap: Properly round reg_bytes and val_bytes

On Fri, Jan 27, 2012 at 04:28:37PM +0000, Mark Brown wrote:
> On Fri, Jan 27, 2012 at 04:10:21PM +0100, Wolfram Sang wrote:
> > For the upcoming 2/6-format, we don't see debugfs output otherwise,
> > since the current division results in 0. I'd think 10/14 is broken
> > currently, too.
> 
> This looks good but could you please rebase on top of topic/core, it
> conflicts with the support for padding bytes.  It's not really entirely
> incorrect, the bytes values aren't terribly well defined for register
> sizes that aren't integer numbers of bytes as they were never intended
> to be used then.  The assumption did leak out into debugfs though.

I wondered if you'd save reg_bits and val_bits there (converting to *_bytes
when needed), you could replace all the format_x_y-functions with a few generic
functions doing (reg << y) | val. Unsure if it is worth it...

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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