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Message-ID: <76471664-425b-c386-3ad8-efeabc2eaf7e@analog.com>
Date: Tue, 4 Apr 2017 10:28:23 +0200
From: Michael Hennerich <michael.hennerich@...log.com>
To: <broonie@...nel.org>, <", linus.walleij"@linaro.org>,
<wsa@...-dreams.de>
CC: <linux-gpio@...r.kernel.org>, <linux-i2c@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: question about concurrent regmap i2c usage
Hi Mark,
During the discussion here: https://lkml.org/lkml/2017/4/4/76
A question came up, regarding whether it's recommended to mix regmap_i2c
and plain i2c_smbus or direct adapter transfers.
In this specific case for the i2c MUX portion we need to avoid double
locks, and therefore use un-locked direct adapter transfers.
The same time we also implement a small gpiochip, where we would like to
use regmap to avoid some boilerplate code for the register cache.
What is your thought on this?
--
Greetings,
Michael
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