From: Michael Hennerich <michael.hennerich@analog.com>
To: broonie@kernel.org, ", linus.walleij"@linaro.org, wsa@the-dreams.de
Cc: linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: question about concurrent regmap i2c usage
Date: Tue, 4 Apr 2017 10:28:23 +0200 [thread overview]
Message-ID: <76471664-425b-c386-3ad8-efeabc2eaf7e@analog.com> (raw)
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
--
Analog Devices GmbH Otl-Aicher Strasse 60-64 80807 München
Sitz der Gesellschaft München, Registergericht München HRB 40368,
Geschäftsführer: Peter Kolberg, Ali Raza Husain, Eileen Wynne
next reply other threads:[~2017-04-04 8:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-04 8:28 Michael Hennerich [this message]
2017-04-04 12:26 ` question about concurrent regmap i2c usage Mark Brown
2017-04-05 6:31 ` Michael Hennerich
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=76471664-425b-c386-3ad8-efeabc2eaf7e@analog.com \
--to=michael.hennerich@analog.com \
--cc=", linus.walleij"@linaro.org \
--cc=broonie@kernel.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=wsa@the-dreams.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).