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-rw-r--r--drivers/input/input.c64
1 files changed, 63 insertions, 1 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 556539d617a..e828aab7dac 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -11,6 +11,7 @@
*/
#include <linux/init.h>
+#include <linux/types.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/random.h>
@@ -514,7 +515,7 @@ static void input_disconnect_device(struct input_dev *dev)
* that there are no threads in the middle of input_open_device()
*/
mutex_lock(&dev->mutex);
- dev->going_away = 1;
+ dev->going_away = true;
mutex_unlock(&dev->mutex);
spin_lock_irq(&dev->event_lock);
@@ -1259,10 +1260,71 @@ static int input_dev_uevent(struct device *device, struct kobj_uevent_env *env)
return 0;
}
+#define INPUT_DO_TOGGLE(dev, type, bits, on) \
+ do { \
+ int i; \
+ if (!test_bit(EV_##type, dev->evbit)) \
+ break; \
+ for (i = 0; i < type##_MAX; i++) { \
+ if (!test_bit(i, dev->bits##bit) || \
+ !test_bit(i, dev->bits)) \
+ continue; \
+ dev->event(dev, EV_##type, i, on); \
+ } \
+ } while (0)
+
+static void input_dev_reset(struct input_dev *dev, bool activate)
+{
+ if (!dev->event)
+ return;
+
+ INPUT_DO_TOGGLE(dev, LED, led, activate);
+ INPUT_DO_TOGGLE(dev, SND, snd, activate);
+
+ if (activate && test_bit(EV_REP, dev->evbit)) {
+ dev->event(dev, EV_REP, REP_PERIOD, dev->rep[REP_PERIOD]);
+ dev->event(dev, EV_REP, REP_DELAY, dev->rep[REP_DELAY]);
+ }
+}
+
+#ifdef CONFIG_PM
+static int input_dev_suspend(struct device *dev)
+{
+ struct input_dev *input_dev = to_input_dev(dev);
+
+ mutex_lock(&input_dev->mutex);
+ input_dev_reset(input_dev, false);
+ mutex_unlock(&input_dev->mutex);
+
+ return 0;
+}
+
+static int input_dev_resume(struct device *dev)
+{
+ struct input_dev *input_dev = to_input_dev(dev);
+
+ mutex_lock(&input_dev->mutex);
+ input_dev_reset(input_dev, true);
+ mutex_unlock(&input_dev->mutex);
+
+ return 0;
+}
+
+static const struct dev_pm_ops input_dev_pm_ops = {
+ .suspend = input_dev_suspend,
+ .resume = input_dev_resume,
+ .poweroff = input_dev_suspend,
+ .restore = input_dev_resume,
+};
+#endif /* CONFIG_PM */
+
static struct device_type input_dev_type = {
.groups = input_dev_attr_groups,
.release = input_dev_release,
.uevent = input_dev_uevent,
+#ifdef CONFIG_PM
+ .pm = &input_dev_pm_ops,
+#endif
};
static char *input_devnode(struct device *dev, mode_t *mode)