iio: adc: rockchip_saradc: add voltage notifier so get referenced voltage once at probe

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Add voltage notifier, no need to query regulator voltage for
every saradc read, just get regulator voltage once at probe.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Simon Xue <xxm@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20210810011007.54066-1-xxm@rock-chips.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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David Wu 2021-08-10 09:10:07 +08:00 • committed by Jonathan Cameron

parent b76d26d69e

commit cabd6e9cf2

1 changed files with 40 additions and 7 deletions

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drivers/iio/adc/rockchip_saradc.c

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