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Renato Lui Geh authored
This patch adds a new functionality of reading gain values from the ad778x chips. This value is stored in the chip's state struct and is updated whenever a read or write call is performed on the driver. Signed-off-by: Renato Lui Geh <renatogeh@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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