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input: keyboard: rk_keys: add wake lock

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New version Android will never call EPOLLWAKEUP or EVIOCSSUSPENDBLOCK.
So we need add wake lock in driver.

Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
This commit is contained in:
Huang, Tao
2015-05-19 10:56:23 +08:00
parent 3d5bfb827c
commit 50b9a50e3e
1 changed files with 9 additions and 0 deletions
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9
drivers/input/keyboard/rk_keys.c
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@@ -23,6 +23,7 @@
#include <linux/input.h>
#include <linux/adc.h>
#include <linux/slab.h>
#include <linux/wakelock.h>
#include <linux/iio/iio.h>
#include <linux/iio/machine.h>
@@ -50,6 +51,7 @@
#define DEBOUNCE_JIFFIES (10 / (MSEC_PER_SEC / HZ)) /* 10ms */
#define ADC_SAMPLE_JIFFIES (100 / (MSEC_PER_SEC / HZ)) /* 100ms */
#define WAKE_LOCK_JIFFIES (1 * HZ) /* 1s */
enum rk_key_type {
TYPE_GPIO = 1,
@@ -75,6 +77,7 @@ struct rk_keys_drvdata {
bool in_suspend;
int result;
int rep;
struct wake_lock wake_lock;
struct input_dev *input;
struct delayed_work adc_poll_work;
struct iio_channel *chan;
@@ -160,6 +163,8 @@ static irqreturn_t keys_isr(int irq, void *dev_id)
input_event(input, EV_KEY, button->code, button->state);
input_sync(input);
}
if (button->wakeup)
wake_lock_timeout(&pdata->wake_lock, WAKE_LOCK_JIFFIES);
mod_timer(&button->timer, jiffies + DEBOUNCE_JIFFIES);
return IRQ_HANDLED;
@@ -371,6 +376,8 @@ static int keys_probe(struct platform_device *pdev)
input_set_capability(input, EV_KEY, button->code);
}
wake_lock_init(&ddata->wake_lock, WAKE_LOCK_SUSPEND, input->name);
for (i = 0; i < ddata->nbuttons; i++) {
struct rk_keys_button *button = &ddata->button[i];
@@ -443,6 +450,7 @@ static int keys_probe(struct platform_device *pdev)
fail2:
device_init_wakeup(dev, 0);
fail1:
wake_lock_destroy(&ddata->wake_lock);
while (--i >= 0)
del_timer_sync(&ddata->button[i].timer);
fail0:
@@ -464,6 +472,7 @@ static int keys_remove(struct platform_device *pdev)
if (ddata->chan)
cancel_delayed_work_sync(&ddata->adc_poll_work);
input_unregister_device(input);
wake_lock_destroy(&ddata->wake_lock);
sinput_dev = NULL;
spdata = NULL;