From: Andreas Werner <andy@wernerandy.de>
To: Felipe Balbi <balbi@ti.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: regmap different register size
Date: Tue, 26 May 2015 21:27:07 +0200 [thread overview]
Message-ID: <20150526192707.GA28895@wernerandy.de> (raw)
In-Reply-To: <20150526190039.GX26599@saruman.tx.rr.com>
On Tue, May 26, 2015 at 02:00:39PM -0500, Felipe Balbi wrote:
> Hi,
>
> On Tue, May 26, 2015 at 08:54:25PM +0200, Andreas Werner wrote:
> > i have a question regarding regmap usage.
> >
> > I have a i2c multifunction device which does have a register and value
> > width of 8bits except the revision register. The revision can only be
> > read by a i2c block transfer.
>
> read revision during probe using i2c block transfer, cache the value in
> your own driver structure and all subsequent reads just return the
> cached value. Everything else should be ok via regmap. This is first
> thing that came to mind, maybe there's a better way.
>
> --
> balbi
This is what I want to do yes and i think this would be the only way to do it
because there is no mechanism to handle different register sizes with regmap.
Regards
Andy
prev parent reply other threads:[~2015-05-26 19:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-26 18:54 regmap different register size Andreas Werner
2015-05-26 19:00 ` Felipe Balbi
2015-05-26 19:27 ` Andreas Werner [this message]
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