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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 -- 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
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