diff options
Diffstat (limited to 'drivers/input/evdev.c')
| -rw-r--r-- | drivers/input/evdev.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 1148140d08a1..5598ecb48c5b 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -19,6 +19,9 @@ #include <linux/input.h> #include <linux/major.h> #include <linux/device.h> +#ifdef CONFIG_WAKELOCK +#include <linux/wakelock.h> +#endif #include "input-compat.h" struct evdev { @@ -42,6 +45,10 @@ struct evdev_client { struct fasync_struct *fasync; struct evdev *evdev; struct list_head node; +#ifdef CONFIG_WAKELOCK + struct wake_lock wake_lock; + char name[28]; +#endif }; static struct evdev *evdev_table[EVDEV_MINORS]; @@ -54,6 +61,9 @@ static void evdev_pass_event(struct evdev_client *client, * Interrupts are disabled, just acquire the lock */ spin_lock(&client->buffer_lock); +#ifdef CONFIG_WAKELOCK + wake_lock_timeout(&client->wake_lock, 5 * HZ); +#endif client->buffer[client->head++] = *event; client->head &= EVDEV_BUFFER_SIZE - 1; spin_unlock(&client->buffer_lock); @@ -70,8 +80,15 @@ static void evdev_event(struct input_handle *handle, struct evdev *evdev = handle->private; struct evdev_client *client; struct input_event event; +#ifdef CONFIG_WAKELOCK + struct timespec ts; + ktime_get_ts(&ts); + event.time.tv_sec = ts.tv_sec; + event.time.tv_usec = ts.tv_nsec / NSEC_PER_USEC; +#else do_gettimeofday(&event.time); +#endif event.type = type; event.code = code; event.value = value; @@ -232,6 +249,9 @@ static int evdev_release(struct inode *inode, struct file *file) mutex_unlock(&evdev->mutex); evdev_detach_client(evdev, client); +#ifdef CONFIG_WAKELOCK + wake_lock_destroy(&client->wake_lock); +#endif kfree(client); evdev_close_device(evdev); @@ -268,6 +288,11 @@ static int evdev_open(struct inode *inode, struct file *file) } spin_lock_init(&client->buffer_lock); +#ifdef CONFIG_WAKELOCK + snprintf(client->name, sizeof(client->name), "%s-%d", dev_name(&evdev->dev), + task_tgid_vnr(current)); + wake_lock_init(&client->wake_lock, WAKE_LOCK_SUSPEND, client->name); +#endif client->evdev = evdev; evdev_attach_client(evdev, client); @@ -331,6 +356,10 @@ static int evdev_fetch_next_event(struct evdev_client *client, if (have_event) { *event = client->buffer[client->tail++]; client->tail &= EVDEV_BUFFER_SIZE - 1; +#ifdef CONFIG_WAKELOCK + if (client->head == client->tail) + wake_unlock(&client->wake_lock); +#endif } spin_unlock_irq(&client->buffer_lock); |