#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/rcupdate.h>
-#include <linux/smp_lock.h>
#include "input-compat.h"
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
* 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;
if (code == ABS_MT_SLOT) {
/*
* "Stage" the event; we'll flush it later, when we
- * get actiual touch data.
+ * get actual touch data.
*/
if (*pval >= 0 && *pval < dev->mtsize)
dev->slot = *pval;
pold = &mtslot->abs[code - ABS_MT_FIRST];
} else {
/*
- * Bypass filtering for multitouch events when
+ * Bypass filtering for multi-touch events when
* not employing slots.
*/
pold = NULL;
/* 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);
}
}
spin_unlock_irq(&dev->event_lock);
}
-static int input_fetch_keycode(struct input_dev *dev, int scancode)
+/**
+ * input_scancode_to_scalar() - converts scancode in &struct input_keymap_entry
+ * @ke: keymap entry containing scancode to be converted.
+ * @scancode: pointer to the location where converted scancode should
+ * be stored.
+ *
+ * This function is used to convert scancode stored in &struct keymap_entry
+ * into scalar form understood by legacy keymap handling methods. These
+ * methods expect scancodes to be represented as 'unsigned int'.
+ */
+int input_scancode_to_scalar(const struct input_keymap_entry *ke,
+ unsigned int *scancode)
+{
+ switch (ke->len) {
+ case 1:
+ *scancode = *((u8 *)ke->scancode);
+ break;
+
+ case 2:
+ *scancode = *((u16 *)ke->scancode);
+ break;
+
+ case 4:
+ *scancode = *((u32 *)ke->scancode);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(input_scancode_to_scalar);
+
+/*
+ * Those routines handle the default case where no [gs]etkeycode() is
+ * defined. In this case, an array indexed by the scancode is used.
+ */
+
+static unsigned int input_fetch_keycode(struct input_dev *dev,
+ unsigned int index)
{
switch (dev->keycodesize) {
- case 1:
- return ((u8 *)dev->keycode)[scancode];
+ case 1:
+ return ((u8 *)dev->keycode)[index];
- case 2:
- return ((u16 *)dev->keycode)[scancode];
+ case 2:
+ return ((u16 *)dev->keycode)[index];
- default:
- return ((u32 *)dev->keycode)[scancode];
+ default:
+ return ((u32 *)dev->keycode)[index];
}
}
static int input_default_getkeycode(struct input_dev *dev,
- unsigned int scancode,
- unsigned int *keycode)
+ struct input_keymap_entry *ke)
{
+ unsigned int index;
+ int error;
+
if (!dev->keycodesize)
return -EINVAL;
- if (scancode >= dev->keycodemax)
+ if (ke->flags & INPUT_KEYMAP_BY_INDEX)
+ index = ke->index;
+ else {
+ error = input_scancode_to_scalar(ke, &index);
+ if (error)
+ return error;
+ }
+
+ if (index >= dev->keycodemax)
return -EINVAL;
- *keycode = input_fetch_keycode(dev, scancode);
+ ke->keycode = input_fetch_keycode(dev, index);
+ ke->index = index;
+ ke->len = sizeof(index);
+ memcpy(ke->scancode, &index, sizeof(index));
return 0;
}
static int input_default_setkeycode(struct input_dev *dev,
- unsigned int scancode,
- unsigned int keycode)
+ const struct input_keymap_entry *ke,
+ unsigned int *old_keycode)
{
- int old_keycode;
+ unsigned int index;
+ int error;
int i;
- if (scancode >= dev->keycodemax)
+ if (!dev->keycodesize)
return -EINVAL;
- if (!dev->keycodesize)
+ if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
+ index = ke->index;
+ } else {
+ error = input_scancode_to_scalar(ke, &index);
+ if (error)
+ return error;
+ }
+
+ if (index >= dev->keycodemax)
return -EINVAL;
- if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8)))
+ if (dev->keycodesize < sizeof(ke->keycode) &&
+ (ke->keycode >> (dev->keycodesize * 8)))
return -EINVAL;
switch (dev->keycodesize) {
case 1: {
u8 *k = (u8 *)dev->keycode;
- old_keycode = k[scancode];
- k[scancode] = keycode;
+ *old_keycode = k[index];
+ k[index] = ke->keycode;
break;
}
case 2: {
u16 *k = (u16 *)dev->keycode;
- old_keycode = k[scancode];
- k[scancode] = keycode;
+ *old_keycode = k[index];
+ k[index] = ke->keycode;
break;
}
default: {
u32 *k = (u32 *)dev->keycode;
- old_keycode = k[scancode];
- k[scancode] = keycode;
+ *old_keycode = k[index];
+ k[index] = ke->keycode;
break;
}
}
- __clear_bit(old_keycode, dev->keybit);
- __set_bit(keycode, dev->keybit);
+ __clear_bit(*old_keycode, dev->keybit);
+ __set_bit(ke->keycode, dev->keybit);
for (i = 0; i < dev->keycodemax; i++) {
- if (input_fetch_keycode(dev, i) == old_keycode) {
- __set_bit(old_keycode, dev->keybit);
+ if (input_fetch_keycode(dev, i) == *old_keycode) {
+ __set_bit(*old_keycode, dev->keybit);
break; /* Setting the bit twice is useless, so break */
}
}
/**
* input_get_keycode - retrieve keycode currently mapped to a given scancode
* @dev: input device which keymap is being queried
- * @scancode: scancode (or its equivalent for device in question) for which
- * keycode is needed
- * @keycode: result
+ * @ke: keymap entry
*
* This function should be called by anyone interested in retrieving current
- * keymap. Presently keyboard and evdev handlers use it.
+ * keymap. Presently evdev handlers use it.
*/
-int input_get_keycode(struct input_dev *dev,
- unsigned int scancode, unsigned int *keycode)
+int input_get_keycode(struct input_dev *dev, struct input_keymap_entry *ke)
{
unsigned long flags;
int retval;
spin_lock_irqsave(&dev->event_lock, flags);
- retval = dev->getkeycode(dev, scancode, keycode);
- spin_unlock_irqrestore(&dev->event_lock, flags);
+ if (dev->getkeycode) {
+ /*
+ * Support for legacy drivers, that don't implement the new
+ * ioctls
+ */
+ u32 scancode = ke->index;
+
+ memcpy(ke->scancode, &scancode, sizeof(scancode));
+ ke->len = sizeof(scancode);
+ retval = dev->getkeycode(dev, scancode, &ke->keycode);
+ } else {
+ retval = dev->getkeycode_new(dev, ke);
+ }
+
+ spin_unlock_irqrestore(&dev->event_lock, flags);
return retval;
}
EXPORT_SYMBOL(input_get_keycode);
/**
- * input_get_keycode - assign new keycode to a given scancode
+ * input_set_keycode - attribute a keycode to a given scancode
* @dev: input device which keymap is being updated
- * @scancode: scancode (or its equivalent for device in question)
- * @keycode: new keycode to be assigned to the scancode
+ * @ke: new keymap entry
*
* This function should be called by anyone needing to update current
* keymap. Presently keyboard and evdev handlers use it.
*/
int input_set_keycode(struct input_dev *dev,
- unsigned int scancode, unsigned int keycode)
+ const struct input_keymap_entry *ke)
{
unsigned long flags;
unsigned int old_keycode;
int retval;
- if (keycode > KEY_MAX)
+ if (ke->keycode > KEY_MAX)
return -EINVAL;
spin_lock_irqsave(&dev->event_lock, flags);
- retval = dev->getkeycode(dev, scancode, &old_keycode);
- if (retval)
- goto out;
+ if (dev->setkeycode) {
+ /*
+ * Support for legacy drivers, that don't implement the new
+ * ioctls
+ */
+ unsigned int scancode;
+
+ retval = input_scancode_to_scalar(ke, &scancode);
+ if (retval)
+ goto out;
+
+ /*
+ * We need to know the old scancode, in order to generate a
+ * keyup effect, if the set operation happens successfully
+ */
+ if (!dev->getkeycode) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ retval = dev->getkeycode(dev, scancode, &old_keycode);
+ if (retval)
+ goto out;
+
+ retval = dev->setkeycode(dev, scancode, ke->keycode);
+ } else {
+ retval = dev->setkeycode_new(dev, ke, &old_keycode);
+ }
- retval = dev->setkeycode(dev, scancode, keycode);
if (retval)
goto out;
!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:
} \
} 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;
}
*
* 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 iby setting ABS_MT_TRACKING_ID to -1.
+ * 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)
{
dev->rep[REP_PERIOD] = 33;
}
- if (!dev->getkeycode)
- dev->getkeycode = input_default_getkeycode;
+ if (!dev->getkeycode && !dev->getkeycode_new)
+ dev->getkeycode_new = input_default_getkeycode;
- if (!dev->setkeycode)
- dev->setkeycode = input_default_setkeycode;
+ if (!dev->setkeycode && !dev->setkeycode_new)
+ dev->setkeycode_new = input_default_setkeycode;
dev_set_name(&dev->dev, "input%ld",
(unsigned long) atomic_inc_return(&input_no) - 1);
static const struct file_operations input_fops = {
.owner = THIS_MODULE,
.open = input_open_file,
+ .llseek = noop_llseek,
};
static int __init input_init(void)
projects / mv-sheeva.git / blobdiff