RFC gpiolib: add bias support
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Cover letter [RFC PATCH 0/7] gpiolib: add bias support
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I have not introduced a
gpiod_set_bias()because I think the only place to setup this is in the device tree. It's useless to setup a bias pull up if there is an external pull up on the board.
Hi Ludovic
I have a use case where having gpiod_set_bias() would be good. The DLN2 is a USB device, which offers GPIO, I2C, and SPI services on its pins. It is a hot pluggable device, and i'm using it on Intel machines, making it double hard to use with Device Tree.
It would be good to be able to set the pull up/down on the GPIO pins, probably from a small kernel module which calls gpiod_set_bias(), or via /sysfs.
Andrew