*/
#include <linux/init.h>
-#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/input.h>
#include <linux/module.h>
/**
* input_event() - report new input event
- * @handle: device that generated the event
+ * @dev: device that generated the event
* @type: type of the event
* @code: event code
* @value: value of the event
}
EXPORT_SYMBOL(input_close_device);
-static void input_link_handle(struct input_handle *handle)
+static int input_fetch_keycode(struct input_dev *dev, int scancode)
{
- list_add_tail(&handle->d_node, &handle->dev->h_list);
- list_add_tail(&handle->h_node, &handle->handler->h_list);
+ switch (dev->keycodesize) {
+ case 1:
+ return ((u8 *)dev->keycode)[scancode];
+
+ case 2:
+ return ((u16 *)dev->keycode)[scancode];
+
+ default:
+ return ((u32 *)dev->keycode)[scancode];
+ }
+}
+
+static int input_default_getkeycode(struct input_dev *dev,
+ int scancode, int *keycode)
+{
+ if (!dev->keycodesize)
+ return -EINVAL;
+
+ if (scancode < 0 || scancode >= dev->keycodemax)
+ return -EINVAL;
+
+ *keycode = input_fetch_keycode(dev, scancode);
+
+ return 0;
+}
+
+static int input_default_setkeycode(struct input_dev *dev,
+ int scancode, int keycode)
+{
+ int old_keycode;
+ int i;
+
+ if (scancode < 0 || scancode >= dev->keycodemax)
+ return -EINVAL;
+
+ if (keycode < 0 || keycode > KEY_MAX)
+ return -EINVAL;
+
+ if (!dev->keycodesize)
+ return -EINVAL;
+
+ if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8)))
+ return -EINVAL;
+
+ switch (dev->keycodesize) {
+ case 1: {
+ u8 *k = (u8 *)dev->keycode;
+ old_keycode = k[scancode];
+ k[scancode] = keycode;
+ break;
+ }
+ case 2: {
+ u16 *k = (u16 *)dev->keycode;
+ old_keycode = k[scancode];
+ k[scancode] = keycode;
+ break;
+ }
+ default: {
+ u32 *k = (u32 *)dev->keycode;
+ old_keycode = k[scancode];
+ k[scancode] = keycode;
+ break;
+ }
+ }
+
+ clear_bit(old_keycode, dev->keybit);
+ set_bit(keycode, dev->keybit);
+
+ for (i = 0; i < dev->keycodemax; i++) {
+ if (input_fetch_keycode(dev, i) == old_keycode) {
+ set_bit(old_keycode, dev->keybit);
+ break; /* Setting the bit twice is useless, so break */
+ }
+ }
+
+ return 0;
}
+
#define MATCH_BIT(bit, max) \
for (i = 0; i < NBITS(max); i++) \
if ((id->bit[i] & dev->bit[i]) != id->bit[i]) \
return NULL;
}
+static int input_attach_handler(struct input_dev *dev, struct input_handler *handler)
+{
+ const struct input_device_id *id;
+ int error;
+
+ if (handler->blacklist && input_match_device(handler->blacklist, dev))
+ return -ENODEV;
+
+ id = input_match_device(handler->id_table, dev);
+ if (!id)
+ return -ENODEV;
+
+ 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->cdev.kobj), error);
+
+ return error;
+}
+
+
#ifdef CONFIG_PROC_FS
static struct proc_dir_entry *proc_bus_input_dir;
seq_printf(seq, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
seq_printf(seq, "P: Phys=%s\n", dev->phys ? dev->phys : "");
seq_printf(seq, "S: Sysfs=%s\n", path ? path : "");
+ seq_printf(seq, "U: Uniq=%s\n", dev->uniq ? dev->uniq : "");
seq_printf(seq, "H: Handlers=");
list_for_each_entry(handle, &dev->h_list, d_node)
return seq_open(file, &input_devices_seq_ops);
}
-static struct file_operations input_devices_fileops = {
+static const struct file_operations input_devices_fileops = {
.owner = THIS_MODULE,
.open = input_proc_devices_open,
.poll = input_proc_devices_poll,
return seq_open(file, &input_handlers_seq_ops);
}
-static struct file_operations input_handlers_fileops = {
+static const struct file_operations input_handlers_fileops = {
.owner = THIS_MODULE,
.open = input_proc_handlers_open,
.read = seq_read,
static ssize_t input_dev_show_##name(struct class_device *dev, char *buf) \
{ \
struct input_dev *input_dev = to_input_dev(dev); \
- int retval; \
- \
- retval = mutex_lock_interruptible(&input_dev->mutex); \
- if (retval) \
- return retval; \
- \
- retval = scnprintf(buf, PAGE_SIZE, \
- "%s\n", input_dev->name ? input_dev->name : ""); \
\
- mutex_unlock(&input_dev->mutex); \
- \
- return retval; \
+ return scnprintf(buf, PAGE_SIZE, "%s\n", \
+ input_dev->name ? input_dev->name : ""); \
} \
static CLASS_DEVICE_ATTR(name, S_IRUGO, input_dev_show_##name, NULL);
.attrs = input_dev_caps_attrs,
};
+static struct attribute_group *input_dev_attr_groups[] = {
+ &input_dev_attr_group,
+ &input_dev_id_attr_group,
+ &input_dev_caps_attr_group,
+ NULL
+};
+
static void input_dev_release(struct class_device *class_dev)
{
struct input_dev *dev = to_input_dev(class_dev);
};
EXPORT_SYMBOL_GPL(input_class);
+/**
+ * input_allocate_device - allocate memory for new input device
+ *
+ * Returns prepared struct input_dev or NULL.
+ *
+ * NOTE: Use input_free_device() to free devices that have not been
+ * registered; input_unregister_device() should be used for already
+ * registered devices.
+ */
struct input_dev *input_allocate_device(void)
{
struct input_dev *dev;
dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
if (dev) {
dev->cdev.class = &input_class;
+ dev->cdev.groups = input_dev_attr_groups;
class_device_initialize(&dev->cdev);
mutex_init(&dev->mutex);
INIT_LIST_HEAD(&dev->h_list);
}
EXPORT_SYMBOL(input_allocate_device);
+/**
+ * input_free_device - free memory occupied by input_dev structure
+ * @dev: input device to free
+ *
+ * This function should only be used if input_register_device()
+ * was not called yet or if it failed. Once device was registered
+ * use input_unregister_device() and memory will be freed once last
+ * refrence to the device is dropped.
+ *
+ * Device should be allocated by input_allocate_device().
+ *
+ * NOTE: If there are references to the input device then memory
+ * will not be freed until last reference is dropped.
+ */
void input_free_device(struct input_dev *dev)
{
- if (dev) {
-
- mutex_lock(&dev->mutex);
- dev->name = dev->phys = dev->uniq = NULL;
- mutex_unlock(&dev->mutex);
-
+ if (dev)
input_put_device(dev);
- }
}
EXPORT_SYMBOL(input_free_device);
+/**
+ * input_set_capability - mark device as capable of a certain event
+ * @dev: device that is capable of emitting or accepting event
+ * @type: type of the event (EV_KEY, EV_REL, etc...)
+ * @code: event code
+ *
+ * In addition to setting up corresponding bit in appropriate capability
+ * bitmap the function also adjusts dev->evbit.
+ */
+void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code)
+{
+ switch (type) {
+ case EV_KEY:
+ __set_bit(code, dev->keybit);
+ break;
+
+ case EV_REL:
+ __set_bit(code, dev->relbit);
+ break;
+
+ case EV_ABS:
+ __set_bit(code, dev->absbit);
+ break;
+
+ case EV_MSC:
+ __set_bit(code, dev->mscbit);
+ break;
+
+ case EV_SW:
+ __set_bit(code, dev->swbit);
+ break;
+
+ case EV_LED:
+ __set_bit(code, dev->ledbit);
+ break;
+
+ case EV_SND:
+ __set_bit(code, dev->sndbit);
+ break;
+
+ case EV_FF:
+ __set_bit(code, dev->ffbit);
+ break;
+
+ default:
+ printk(KERN_ERR
+ "input_set_capability: unknown type %u (code %u)\n",
+ type, code);
+ dump_stack();
+ return;
+ }
+
+ __set_bit(type, dev->evbit);
+}
+EXPORT_SYMBOL(input_set_capability);
+
int input_register_device(struct input_dev *dev)
{
static atomic_t input_no = ATOMIC_INIT(0);
- struct input_handle *handle;
struct input_handler *handler;
- const struct input_device_id *id;
const char *path;
int error;
dev->rep[REP_PERIOD] = 33;
}
+ if (!dev->getkeycode)
+ dev->getkeycode = input_default_getkeycode;
+
+ if (!dev->setkeycode)
+ dev->setkeycode = input_default_setkeycode;
+
list_add_tail(&dev->node, &input_dev_list);
snprintf(dev->cdev.class_id, sizeof(dev->cdev.class_id),
"input%ld", (unsigned long) atomic_inc_return(&input_no) - 1);
+ if (!dev->cdev.dev)
+ dev->cdev.dev = dev->dev.parent;
+
error = class_device_add(&dev->cdev);
if (error)
return error;
- error = sysfs_create_group(&dev->cdev.kobj, &input_dev_attr_group);
- if (error)
- goto fail1;
-
- error = sysfs_create_group(&dev->cdev.kobj, &input_dev_id_attr_group);
- if (error)
- goto fail2;
-
- error = sysfs_create_group(&dev->cdev.kobj, &input_dev_caps_attr_group);
- if (error)
- goto fail3;
-
path = kobject_get_path(&dev->cdev.kobj, GFP_KERNEL);
printk(KERN_INFO "input: %s as %s\n",
dev->name ? dev->name : "Unspecified device", path ? path : "N/A");
kfree(path);
list_for_each_entry(handler, &input_handler_list, node)
- if (!handler->blacklist || !input_match_device(handler->blacklist, dev))
- if ((id = input_match_device(handler->id_table, dev)))
- if ((handle = handler->connect(handler, dev, id))) {
- input_link_handle(handle);
- if (handler->start)
- handler->start(handle);
- }
+ input_attach_handler(dev, handler);
input_wakeup_procfs_readers();
return 0;
-
- fail3: sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group);
- fail2: sysfs_remove_group(&dev->cdev.kobj, &input_dev_attr_group);
- fail1: class_device_del(&dev->cdev);
- return error;
}
EXPORT_SYMBOL(input_register_device);
void input_unregister_device(struct input_dev *dev)
{
- struct list_head *node, *next;
+ struct input_handle *handle, *next;
int code;
for (code = 0; code <= KEY_MAX; code++)
del_timer_sync(&dev->timer);
- list_for_each_safe(node, next, &dev->h_list) {
- struct input_handle * handle = to_handle(node);
- list_del_init(&handle->d_node);
- list_del_init(&handle->h_node);
+ list_for_each_entry_safe(handle, next, &dev->h_list, d_node)
handle->handler->disconnect(handle);
- }
+ WARN_ON(!list_empty(&dev->h_list));
list_del_init(&dev->node);
- sysfs_remove_group(&dev->cdev.kobj, &input_dev_caps_attr_group);
- sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group);
- sysfs_remove_group(&dev->cdev.kobj, &input_dev_attr_group);
-
- mutex_lock(&dev->mutex);
- dev->name = dev->phys = dev->uniq = NULL;
- mutex_unlock(&dev->mutex);
-
class_device_unregister(&dev->cdev);
input_wakeup_procfs_readers();
int input_register_handler(struct input_handler *handler)
{
struct input_dev *dev;
- struct input_handle *handle;
- const struct input_device_id *id;
INIT_LIST_HEAD(&handler->h_list);
list_add_tail(&handler->node, &input_handler_list);
list_for_each_entry(dev, &input_dev_list, node)
- if (!handler->blacklist || !input_match_device(handler->blacklist, dev))
- if ((id = input_match_device(handler->id_table, dev)))
- if ((handle = handler->connect(handler, dev, id))) {
- input_link_handle(handle);
- if (handler->start)
- handler->start(handle);
- }
+ input_attach_handler(dev, handler);
input_wakeup_procfs_readers();
return 0;
void input_unregister_handler(struct input_handler *handler)
{
- struct list_head *node, *next;
+ struct input_handle *handle, *next;
- list_for_each_safe(node, next, &handler->h_list) {
- struct input_handle * handle = to_handle_h(node);
- list_del_init(&handle->h_node);
- list_del_init(&handle->d_node);
+ list_for_each_entry_safe(handle, next, &handler->h_list, h_node)
handler->disconnect(handle);
- }
+ WARN_ON(!list_empty(&handler->h_list));
list_del_init(&handler->node);
}
EXPORT_SYMBOL(input_unregister_handler);
+int input_register_handle(struct input_handle *handle)
+{
+ struct input_handler *handler = handle->handler;
+
+ list_add_tail(&handle->d_node, &handle->dev->h_list);
+ list_add_tail(&handle->h_node, &handler->h_list);
+
+ if (handler->start)
+ handler->start(handle);
+
+ return 0;
+}
+EXPORT_SYMBOL(input_register_handle);
+
+void input_unregister_handle(struct input_handle *handle)
+{
+ list_del_init(&handle->h_node);
+ list_del_init(&handle->d_node);
+}
+EXPORT_SYMBOL(input_unregister_handle);
+
static int input_open_file(struct inode *inode, struct file *file)
{
struct input_handler *handler = input_table[iminor(inode) >> 5];
return err;
}
-static struct file_operations input_fops = {
+static const struct file_operations input_fops = {
.owner = THIS_MODULE,
.open = input_open_file,
};
projects / powerpc.git / blobdiff