linux-toradex.git/drivers/input/keyboard/gpio_keys.c, branch v3.4.52 Linux kernel for Apalis and Colibri modules Input: gpio_keys - add support for interrupt only keys 2012-03-20T00:56:18+00:00 Laxman Dewangan ldewangan@nvidia.com 2012-03-20T00:54:31+00:00 d8ee4a1c90529ed06e1aa43d034986649f7b670b Some of buttons, like power-on key or onkey, may only generate interrupts when pressed and not actually be mapped as gpio in the system. Allow setting gpio to invalid value and specify IRQ instead to support such keys. The debounce timer is used not to debounce but to ignore new IRQs coming while button is kept pressed. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
Some of buttons, like power-on key or onkey, may only generate interrupts
when pressed and not actually be mapped as gpio in the system. Allow
setting gpio to invalid value and specify IRQ instead to support such
keys. The debounce timer is used not to debounce but to ignore new IRQs
coming while button is kept pressed.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - consolidate key destructor code 2012-03-20T00:56:14+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2012-03-19T06:36:30+00:00 a16ca23935afc0d72215b139720bd07df3162a9f Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: revert "gpio_keys - switch to using threaded IRQs" 2012-03-20T00:56:04+00:00 David Jander david@protonic.nl 2012-03-19T06:36:29+00:00 6709c9a5d8c53092cbe89128df4e0a549e93133b request_any_context_irq() should handle the case when using GPIO expanders that themselves use threaded IRQs, and so the premise of change 7e2ecdf438bb479e2b4667fc16b1a84d6348da04 is incorrect. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
request_any_context_irq() should handle the case when using GPIO expanders
that themselves use threaded IRQs, and so the premise of change
7e2ecdf438bb479e2b4667fc16b1a84d6348da04 is incorrect.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - constify platform data 2012-03-20T00:55:45+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2012-03-19T06:36:29+00:00 d9080921aa32c70a95476ce387e973787b892591 The platform data should not be altered and therefore should be accessed through const pointers. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
The platform data should not be altered and therefore should be
accessed through const pointers.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - use of_property_read_u32() 2011-09-21T05:46:32+00:00 Tobias Klauser tklauser@distanz.ch 2011-09-09T18:09:50+00:00 cca84699a079a91b0a0cb4f2da8548e56859376a Use the of_property_read_u32() helper function to retrieve u32 values from the device tree. Also do not pass the len parameter to of_get_property if it isn't checked afterwards. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
Use the of_property_read_u32() helper function to retrieve u32 values
from the device tree. Also do not pass the len parameter to
of_get_property if it isn't checked afterwards.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - return proper error code if memory allocation fails 2011-07-30T19:19:02+00:00 Tobias Klauser tklauser@distanz.ch 2011-07-30T19:08:10+00:00 1f4bb066433322f6f189b084ceebdfb4add77292 Return -ENOMEM if kzalloc fails in gpio_keys_get_devtree_pdata(). Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
Return -ENOMEM if kzalloc fails in gpio_keys_get_devtree_pdata().

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - switch to using SIMPLE_DEV_PM_OPS 2011-07-10T23:08:32+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2011-07-09T19:41:46+00:00 bdda82162837a20e591ac01b306dc8f052270510 This reduces amount #ifdeds in the code. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
This reduces amount #ifdeds in the code.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - add support for device-tree platform data 2011-07-10T23:08:28+00:00 David Jander david@protonic.nl 2011-07-09T19:41:46+00:00 fd05d08920b54d189aa247c5c5701a08e539ed0b This patch enables fetching configuration data, which is normally provided via platform_data, from the device-tree instead. If the device is configured from device-tree data, the platform_data struct is not used, and button data needs to be allocated dynamically. Big part of this patch deals with confining pdata usage to the probe function, to make this possible. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
This patch enables fetching configuration data, which is normally provided
via platform_data, from the device-tree instead.

If the device is configured from device-tree data, the platform_data struct
is not used, and button data needs to be allocated dynamically. Big part of
this patch deals with confining pdata usage to the probe function, to make
this possible.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - fix a memory leak 2011-06-29T07:22:47+00:00 Axel Lin axel.lin@gmail.com 2011-06-28T21:23:30+00:00 1638207910019368253fc4c4a930c49ce2e98432 Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: gpio_keys - move to late_initcall 2011-06-27T19:44:05+00:00 David Jander david@protonic.nl 2011-06-23T08:30:09+00:00 b23302052d96a3945e4c72aca77b5fd28884c353 Initialize gpio_keys driver at late_initcall level, to give it a chance to work with GPIO expanders that might not be ready yet if we initialize the driver at module_init time. This is strictly a band-aid until there is a better way to specify inter-device dependencies. Signed-off-by: David Jander <david@protonic.nl> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 
Initialize gpio_keys driver at late_initcall level, to give it a chance to
work with GPIO expanders that might not be ready yet if we initialize the
driver at module_init time.

This is strictly a band-aid until there is a better way to specify
inter-device dependencies.

Signed-off-by: David Jander <david@protonic.nl>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>