gpio: pca954x: Add vcc regulator and enable it

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Some i2c gpio devices are connected to a switchable power supply
which needs to be enabled prior to probing the device. This patch
allows the drive to enable the devices vcc regulator prior to probing.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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Phil Reid 2016-07-29 11:39:55 +08:00 • committed by Linus Walleij

parent 65053e1a77

commit e23efa3111

1 changed files with 32 additions and 9 deletions

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41

drivers/gpio/gpio-pca953x.c

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