linux-kernel - Re: Using regmap_update_bits to update a write only register

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Message-ID: <20150307110628.GH28806@sirena.org.uk>
Date:	Sat, 7 Mar 2015 11:06:28 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Daniel Baluta <daniel.baluta@...il.com>
Cc:	Lars-Peter Clausen <lars@...afoo.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Using regmap_update_bits to update a write only register

On Fri, Mar 06, 2015 at 09:48:16PM +0200, Daniel Baluta wrote:

> I cannot test is right now because I don't have access to the physical device.
> Is there a way to use to test the regmap API without an I2C/SPI device?

You should be able to create a MMIO regmap on a block of memory.

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