The keycodes are used by some boards.

Signed-off-by: Mathias Kresin <dev@kresin.me>

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

Signed-off-by: Felix Fietkau <nbd@nbd.name>

Without the IRQF_ONESHOT flag in devm_request_threaded_irq() call I get
following error:

  genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq 56
  gpio-keys gpio-keys: failed to request irq:56 for gpio:20

>From kernel/irq/manage.c:

 The interrupt was requested with handler = NULL, so we use the default
 primary handler for it. But it does not have the oneshot flag set. In
 combination with level interrupts this is deadly, because the default
 primary handler just wakes the thread, then the irq lines is reenabled,
 but the device still has the level irq asserted. Rinse and repeat....

 While this works for edge type interrupts, we play it safe and reject
 unconditionally because we can't say for sure which type this interrupt
 really has. The type flags are unreliable as the underlying chip
 implementation can override them.

Signed-off-by: Petr Štetiar <ynezz@true.cz>

SVN-Revision: 48894

Many gpio controllers 'cansleep' due to the fact that they are behind busses
e.g. i2c etc.

Using threaded irq's allows for 'sleep-able' gpio's to be used.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 48696

of_get_gpio_flags() could return an error like EPROBE_DEFER which was
not handled before. This patch takes the code from gpio_keys_polled.c
for error handling and also improves some other unrelated small parts.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 46502

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 44110

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 40838

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 40765

3.3 kernels do not have the required changes which would make
gpio-button-hotplug work, disallow building on those kernels for now.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 39903

The wimax key will be used as a generic wwan key starting with Linux
3.13. The brcm47xx target uses this key for the 3g buttons. Also remove
the ifdef around KEY_WPS_BUTTON, this is in the kernel for a long time
now.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 39290

Don't call gpio_keys_remove recursively. Setting the platform
data to NULL triggered an oops on the second iteration, so there was
no infinate loop.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 39124

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 39021

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 38725

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 38557

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 37702

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 37665

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 37664

TL-WR720N-v3 has a slider switch composed of 2 GPIO buttons which can be
used to swtich between 3 positions.  At leat 1 button is in pressed state
in any of those positions.  Initialize 'last_state' as 0 (released) will
cause the device to automatically enter failsafe mode on every bootup.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

SVN-Revision: 37643

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

SVN-Revision: 37642

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

SVN-Revision: 37641

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 37130

gpio-button-hotplug: improve gpio button debouncing, verify state changes over multiple polls. fixes spurious failsafe triggers (#13784)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 37090

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 37007