* the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_BASENAME ": " fmt
+
#include <linux/init.h>
#include <linux/types.h>
#include <linux/input/mt.h>
* dev->event_lock held and interrupts disabled.
*/
static void input_pass_event(struct input_dev *dev,
+ struct input_handler *src_handler,
unsigned int type, unsigned int code, int value)
{
struct input_handler *handler;
continue;
handler = handle->handler;
+
+ /*
+ * If this is the handler that injected this
+ * particular event we want to skip it to avoid
+ * filters firing again and again.
+ */
+ if (handler == src_handler)
+ continue;
+
if (!handler->filter) {
if (filtered)
break;
if (test_bit(dev->repeat_key, dev->key) &&
is_event_supported(dev->repeat_key, dev->keybit, KEY_MAX)) {
- input_pass_event(dev, EV_KEY, dev->repeat_key, 2);
+ input_pass_event(dev, NULL, EV_KEY, dev->repeat_key, 2);
if (dev->sync) {
/*
* Otherwise assume that the driver will send
* SYN_REPORT once it's done.
*/
- input_pass_event(dev, EV_SYN, SYN_REPORT, 1);
+ input_pass_event(dev, NULL, EV_SYN, SYN_REPORT, 1);
}
if (dev->rep[REP_PERIOD])
#define INPUT_PASS_TO_ALL (INPUT_PASS_TO_HANDLERS | INPUT_PASS_TO_DEVICE)
static int input_handle_abs_event(struct input_dev *dev,
+ struct input_handler *src_handler,
unsigned int code, int *pval)
{
bool is_mt_event;
/* Flush pending "slot" event */
if (is_mt_event && dev->slot != input_abs_get_val(dev, ABS_MT_SLOT)) {
input_abs_set_val(dev, ABS_MT_SLOT, dev->slot);
- input_pass_event(dev, EV_ABS, ABS_MT_SLOT, dev->slot);
+ input_pass_event(dev, src_handler,
+ EV_ABS, ABS_MT_SLOT, dev->slot);
}
return INPUT_PASS_TO_HANDLERS;
}
static void input_handle_event(struct input_dev *dev,
+ struct input_handler *src_handler,
unsigned int type, unsigned int code, int value)
{
int disposition = INPUT_IGNORE_EVENT;
case EV_ABS:
if (is_event_supported(code, dev->absbit, ABS_MAX))
- disposition = input_handle_abs_event(dev, code, &value);
+ disposition = input_handle_abs_event(dev, src_handler,
+ code, &value);
break;
dev->event(dev, type, code, value);
if (disposition & INPUT_PASS_TO_HANDLERS)
- input_pass_event(dev, type, code, value);
+ input_pass_event(dev, src_handler, type, code, value);
}
/**
spin_lock_irqsave(&dev->event_lock, flags);
add_input_randomness(type, code, value);
- input_handle_event(dev, type, code, value);
+ input_handle_event(dev, NULL, type, code, value);
spin_unlock_irqrestore(&dev->event_lock, flags);
}
}
rcu_read_lock();
grab = rcu_dereference(dev->grab);
if (!grab || grab == handle)
- input_handle_event(dev, type, code, value);
+ input_handle_event(dev, handle->handler,
+ type, code, value);
rcu_read_unlock();
spin_unlock_irqrestore(&dev->event_lock, flags);
for (code = 0; code <= KEY_MAX; code++) {
if (is_event_supported(code, dev->keybit, KEY_MAX) &&
__test_and_clear_bit(code, dev->key)) {
- input_pass_event(dev, EV_KEY, code, 0);
+ input_pass_event(dev, NULL, EV_KEY, code, 0);
}
}
- input_pass_event(dev, EV_SYN, SYN_REPORT, 1);
+ input_pass_event(dev, NULL, EV_SYN, SYN_REPORT, 1);
}
}
!is_event_supported(old_keycode, dev->keybit, KEY_MAX) &&
__test_and_clear_bit(old_keycode, dev->key)) {
- input_pass_event(dev, EV_KEY, old_keycode, 0);
+ input_pass_event(dev, NULL, EV_KEY, old_keycode, 0);
if (dev->sync)
- input_pass_event(dev, EV_SYN, SYN_REPORT, 1);
+ input_pass_event(dev, NULL, EV_SYN, SYN_REPORT, 1);
}
out:
error = handler->connect(handler, dev, id);
if (error && error != -ENODEV)
- printk(KERN_ERR
- "input: failed to attach handler %s to device %s, "
- "error: %d\n",
- handler->name, kobject_name(&dev->dev.kobj), error);
+ pr_err("failed to attach handler %s to device %s, error: %d\n",
+ handler->name, kobject_name(&dev->dev.kobj), error);
return error;
}
} \
} while (0)
-#ifdef CONFIG_PM
-static void input_dev_reset(struct input_dev *dev, bool activate)
+static void input_dev_toggle(struct input_dev *dev, bool activate)
{
if (!dev->event)
return;
}
}
+/**
+ * input_reset_device() - reset/restore the state of input device
+ * @dev: input device whose state needs to be reset
+ *
+ * This function tries to reset the state of an opened input device and
+ * bring internal state and state if the hardware in sync with each other.
+ * We mark all keys as released, restore LED state, repeat rate, etc.
+ */
+void input_reset_device(struct input_dev *dev)
+{
+ mutex_lock(&dev->mutex);
+
+ if (dev->users) {
+ input_dev_toggle(dev, true);
+
+ /*
+ * Keys that have been pressed at suspend time are unlikely
+ * to be still pressed when we resume.
+ */
+ spin_lock_irq(&dev->event_lock);
+ input_dev_release_keys(dev);
+ spin_unlock_irq(&dev->event_lock);
+ }
+
+ mutex_unlock(&dev->mutex);
+}
+EXPORT_SYMBOL(input_reset_device);
+
+#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);
+
+ if (input_dev->users)
+ input_dev_toggle(input_dev, false);
+
mutex_unlock(&input_dev->mutex);
return 0;
{
struct input_dev *input_dev = to_input_dev(dev);
- mutex_lock(&input_dev->mutex);
- input_dev_reset(input_dev, true);
-
- /*
- * Keys that have been pressed at suspend time are unlikely
- * to be still pressed when we resume.
- */
- spin_lock_irq(&input_dev->event_lock);
- input_dev_release_keys(input_dev);
- spin_unlock_irq(&input_dev->event_lock);
-
- mutex_unlock(&input_dev->mutex);
+ input_reset_device(input_dev);
return 0;
}
break;
default:
- printk(KERN_ERR
- "input_set_capability: unknown type %u (code %u)\n",
- type, code);
+ pr_err("input_set_capability: unknown type %u (code %u)\n",
+ type, code);
dump_stack();
return;
}
return error;
path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
- printk(KERN_INFO "input: %s as %s\n",
- dev->name ? dev->name : "Unspecified device", path ? path : "N/A");
+ pr_info("%s as %s\n",
+ dev->name ? dev->name : "Unspecified device",
+ path ? path : "N/A");
kfree(path);
error = mutex_lock_interruptible(&input_mutex);
err = class_register(&input_class);
if (err) {
- printk(KERN_ERR "input: unable to register input_dev class\n");
+ pr_err("unable to register input_dev class\n");
return err;
}
err = register_chrdev(INPUT_MAJOR, "input", &input_fops);
if (err) {
- printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
+ pr_err("unable to register char major %d", INPUT_MAJOR);
goto fail2;
}
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / blobdiff