Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2071835
Tested: This is one of a series of patch sets to enable Arm SystemReady IR
support in the kernel for NXP i.MX8 platforms. This set updates GPIO
support. It has been tested via simple boot tests and by using the
kernel GPIO tools to verify pins are being identified and can be used.
commit eff5cdd745a68863a73095b0b4d62d15e0d9d902
Author: Viresh Kumar <viresh.kumar@linaro.org>
Date: Thu Oct 21 16:34:19 2021 +0530
gpio: virtio: Add IRQ support
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 <linus.walleij@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
(cherry picked from commit eff5cdd745a68863a73095b0b4d62d15e0d9d902)
Signed-off-by: Al Stone <ahs3@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2071835
Tested: This is one of a series of patch sets to enable Arm SystemReady IR
support in the kernel for NXP i.MX8 platforms. This set updates GPIO
support. It has been tested via simple boot tests and by using the
kernel GPIO tools to verify pins are being identified and can be used.
commit 3e4d9a485029aa9e172dab5420abe775fd86f8e8
Author: Vincent Whitchurch <vincent.whitchurch@axis.com>
Date: Mon Dec 20 14:06:56 2021 +0100
gpio: virtio: remove timeout
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 <vincent.whitchurch@axis.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
(cherry picked from commit 3e4d9a485029aa9e172dab5420abe775fd86f8e8)
Signed-off-by: Al Stone <ahs3@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2071835
Tested: This is one of a series of patch sets to enable Arm SystemReady IR
support in the kernel for NXP i.MX8 platforms. This set updates GPIO
support. It has been tested via simple boot tests and by using the
kernel GPIO tools to verify pins are being identified and can be used.
commit 17395d7742baa4737e9d3b4672cc3d10e5970998
Author: Viresh Kumar <viresh.kumar@linaro.org>
Date: Tue Aug 31 10:59:25 2021 +0530
gpio: virtio: Fix sparse warnings
Fix warnings reported by sparse, related to type mismatch between u16
and __le16.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 3a29355a22c0 ("gpio: Add virtio-gpio driver")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
(cherry picked from commit 17395d7742baa4737e9d3b4672cc3d10e5970998)
Signed-off-by: Al Stone <ahs3@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2071835
Tested: This is one of a series of patch sets to enable Arm SystemReady IR
support in the kernel for NXP i.MX8 platforms. This set updates GPIO
support. It has been tested via simple boot tests and by using the
kernel GPIO tools to verify pins are being identified and can be used.
commit 3a29355a22c0275fe864100794fee58a73175d93
Author: Viresh Kumar <viresh.kumar@linaro.org>
Date: Thu Aug 19 10:00:22 2021 +0530
gpio: Add virtio-gpio driver
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>
(cherry picked from commit 3a29355a22c0275fe864100794fee58a73175d93)
Signed-off-by: Al Stone <ahs3@redhat.com>
Al Stone