* the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_BASENAME ": " fmt
+
#include <linux/init.h>
#include <linux/types.h>
- #include <linux/input.h>
+ #include <linux/input/mt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/random.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;
}
}
EXPORT_SYMBOL(input_free_device);
- /**
- * input_mt_create_slots() - create MT input slots
- * @dev: input device supporting MT events and finger tracking
- * @num_slots: number of slots used by the device
- *
- * This function allocates all necessary memory for MT slot handling in the
- * input device, and adds ABS_MT_SLOT to the device capabilities. All slots
- * are initially marked as unused by setting ABS_MT_TRACKING_ID to -1.
- */
- int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots)
- {
- int i;
-
- if (!num_slots)
- return 0;
-
- dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL);
- if (!dev->mt)
- return -ENOMEM;
-
- dev->mtsize = num_slots;
- input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0);
-
- /* Mark slots as 'unused' */
- for (i = 0; i < num_slots; i++)
- dev->mt[i].abs[ABS_MT_TRACKING_ID - ABS_MT_FIRST] = -1;
-
- return 0;
- }
- EXPORT_SYMBOL(input_mt_create_slots);
-
- /**
- * input_mt_destroy_slots() - frees the MT slots of the input device
- * @dev: input device with allocated MT slots
- *
- * This function is only needed in error path as the input core will
- * automatically free the MT slots when the device is destroyed.
- */
- void input_mt_destroy_slots(struct input_dev *dev)
- {
- kfree(dev->mt);
- dev->mt = NULL;
- dev->mtsize = 0;
- }
- EXPORT_SYMBOL(input_mt_destroy_slots);
-
/**
* input_set_capability - mark device as capable of a certain event
* @dev: device that is capable of emitting or accepting event
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;
}
#define ABS_MT_BLOB_ID 0x38 /* Group a set of packets as a blob */
#define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */
#define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */
+ #define ABS_MT_DISTANCE 0x3b /* Contact hover distance */
#ifdef __KERNEL__
/* Implementation details, userspace should not care about these */
#define ABS_MT_FIRST ABS_MT_TOUCH_MAJOR
- #define ABS_MT_LAST ABS_MT_PRESSURE
+ #define ABS_MT_LAST ABS_MT_DISTANCE
#endif
#define ABS_MAX 0x3f
*/
#define MT_TOOL_FINGER 0
#define MT_TOOL_PEN 1
+ #define MT_TOOL_MAX 1
/*
* Values describing the status of a force-feedback effect
#include <linux/timer.h>
#include <linux/mod_devicetable.h>
- /**
- * struct input_mt_slot - represents the state of an input MT slot
- * @abs: holds current values of ABS_MT axes for this slot
- */
- struct input_mt_slot {
- int abs[ABS_MT_LAST - ABS_MT_FIRST + 1];
- };
-
/**
* struct input_dev - represents an input device
* @name: name of the device
* of tracked contacts
* @mtsize: number of MT slots the device uses
* @slot: MT slot currently being transmitted
+ * @trkid: stores MT tracking ID for the current contact
* @absinfo: array of &struct absinfo elements holding information
* about absolute axes (current value, min, max, flat, fuzz,
* resolution)
struct input_mt_slot *mt;
int mtsize;
int slot;
+ int trkid;
struct input_absinfo *absinfo;
int __must_check input_register_device(struct input_dev *);
void input_unregister_device(struct input_dev *);
+void input_reset_device(struct input_dev *);
+
int __must_check input_register_handler(struct input_handler *);
void input_unregister_handler(struct input_handler *);
int input_open_device(struct input_handle *);
void input_close_device(struct input_handle *);
-int input_flush_device(struct input_handle* handle, struct file* file);
+int input_flush_device(struct input_handle *handle, struct file *file);
void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value);
void input_inject_event(struct input_handle *handle, unsigned int type, unsigned int code, int value);
input_event(dev, EV_SYN, SYN_MT_REPORT, 0);
}
- static inline void input_mt_slot(struct input_dev *dev, int slot)
- {
- input_event(dev, EV_ABS, ABS_MT_SLOT, slot);
- }
-
void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code);
/**
int input_ff_create_memless(struct input_dev *dev, void *data,
int (*play_effect)(struct input_dev *, void *, struct ff_effect *));
- int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots);
- void input_mt_destroy_slots(struct input_dev *dev);
-
#endif
#endif
git.samba.org / sfrench / cifs-2.6.git / commitdiff