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path: root/drivers/gpio/gpio-virtio.c
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2022-01-14virtio: wrap config->reset callsMichael S. Tsirkin1-1/+1
This will enable cleanups down the road. The idea is to disable cbs, then add "flush_queued_cbs" callback as a parameter, this way drivers can flush any work queued after callbacks have been disabled. Signed-off-by: Michael S. Tsirkin <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Michael S. Tsirkin <[email protected]>
2021-12-21gpio: virtio: remove timeoutVincent Whitchurch1-5/+1
The driver imposes an arbitrary one second timeout on virtio requests, but the specification doesn't prevent the virtio device from taking longer to process requests, so remove this timeout to support all systems and device implementations. Fixes: 3a29355a22c0275fe86 ("gpio: Add virtio-gpio driver") Signed-off-by: Vincent Whitchurch <[email protected]> Acked-by: Michael S. Tsirkin <[email protected]> Acked-by: Viresh Kumar <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2021-11-15gpio: virtio: remove unneeded semicolonYang Li1-1/+1
Eliminate the following coccicheck warning: ./drivers/gpio/gpio-virtio.c:437:2-3: Unneeded semicolon Reported-by: Abaci Robot <[email protected]> Signed-off-by: Yang Li <[email protected]> Acked-by: Viresh Kumar <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2021-11-04gpio: virtio: Add IRQ supportViresh Kumar1-4/+298
This patch adds IRQ support for the virtio GPIO driver. Note that this uses the irq_bus_lock/unlock() callbacks, since those operations over virtio may sleep. Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Viresh Kumar <[email protected]> Acked-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2021-08-31gpio: virtio: Fix sparse warningsViresh Kumar1-21/+20
Fix warnings reported by sparse, related to type mismatch between u16 and __le16. Reported-by: kernel test robot <[email protected]> Fixes: 3a29355a22c0 ("gpio: Add virtio-gpio driver") Signed-off-by: Viresh Kumar <[email protected]> Acked-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2021-08-23gpio: Add virtio-gpio driverViresh Kumar1-0/+375
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" <[email protected]>. Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Viresh Kumar <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
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