gpio: Add virtio-gpio driver

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This patch adds a new driver for Virtio based GPIO devices.

This allows a guest VM running Linux to access GPIO lines provided by
the host. It supports all basic operations, except interrupts for the
GPIO lines.

Based on the initial work posted by:
"Enrico Weigelt, metux IT consult" <lkml@metux.net>.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

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This commit is contained in:

Viresh Kumar 2021-08-19 10:00:22 +05:30 • committed by Bartosz Golaszewski

parent d0ef631d40

commit 3a29355a22

6 changed files with 440 additions and 0 deletions

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47

include/uapi/linux/virtio_gpio.h

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1

include/uapi/linux/virtio_ids.h

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