path: root/include/linux/gpio_keys.h
diff options
authorLaxman Dewangan <ldewangan@nvidia.com>2012-03-19 17:54:31 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2012-03-19 17:56:18 -0700
commitd8ee4a1c90529ed06e1aa43d034986649f7b670b (patch)
tree5a9aec5fe8a9b146799842a2dd284495051621e1 /include/linux/gpio_keys.h
parentInput: gpio_keys - consolidate key destructor code (diff)
Input: gpio_keys - add support for interrupt only keys
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>
Diffstat (limited to 'include/linux/gpio_keys.h')
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h
index 004ff33ab38e..a7e977ff4abf 100644
--- a/include/linux/gpio_keys.h
+++ b/include/linux/gpio_keys.h
@@ -6,7 +6,7 @@ struct device;
struct gpio_keys_button {
/* Configuration parameters */
unsigned int code; /* input event code (KEY_*, SW_*) */
- int gpio;
+ int gpio; /* -1 if this key does not support gpio */
int active_low;
const char *desc;
unsigned int type; /* input event type (EV_KEY, EV_SW, EV_ABS) */
@@ -14,6 +14,7 @@ struct gpio_keys_button {
int debounce_interval; /* debounce ticks interval in msecs */
bool can_disable;
int value; /* axis value for EV_ABS */
+ unsigned int irq; /* Irq number in case of interrupt keys */
struct gpio_keys_platform_data {