mtk-20170518/package/kernel/gpio-button-hotplug/src, branch reboot

kernel: gpio-button-hotplug: Add missing ONESHOT flag to threaded IRQ request

2016-03-03T20:24:47+00:00

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 

SVN-Revision: 48894

kernel: gpio-button-hotplug: update to use threaded irq's

2016-02-12T08:29:11+00:00

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 
Signed-off-by: Tim Harvey 

SVN-Revision: 48696

gpio-button-hotplug: handle EPROBE_DEFER and other errors

2015-07-26T15:52:17+00:00

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 

SVN-Revision: 46502

gpio-button-hotplug: remove #ifdef CONFIG_HOTPLUG, it is gone in newer kernels (fixes #16413)

2014-05-23T22:13:10+00:00

Signed-off-by: Felix Fietkau 

SVN-Revision: 40838

gpio-button-hotplug: add wwan button

2014-01-14T23:11:10+00:00

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 

SVN-Revision: 39290

gpio-button-hotplug: fix crash on remove

2013-12-17T19:05:03+00:00

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 

SVN-Revision: 39124

gpio-button-hotplug: add irq mode to driver

2013-12-09T17:29:39+00:00

Signed-off-by: John Crispin 

SVN-Revision: 39021

gpio-button-hotplug: add support for sliding switches

2013-11-11T12:19:06+00:00

Signed-off-by: John Crispin 

SVN-Revision: 38725

gpio-button-hotplug: add support for power buttons

2013-10-28T13:45:57+00:00

Signed-off-by: John Crispin 

SVN-Revision: 38557

gpio-button-hotplug: debounce the initial button state, the first reads at boot time might be wrong

2013-08-05T10:32:13+00:00

Signed-off-by: Felix Fietkau 

SVN-Revision: 37702