Input: rearrange procfs code to reduce number of #ifdefs
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov
parent
fb2ce3c005
commit
f96b434d3b
|
|
@ -48,12 +48,6 @@ static LIST_HEAD(input_handler_list);
|
|||
|
||||
static struct input_handler *input_table[8];
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
static struct proc_dir_entry *proc_bus_input_dir;
|
||||
static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
|
||||
static int input_devices_state;
|
||||
#endif
|
||||
|
||||
void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
|
||||
{
|
||||
struct input_handle *handle;
|
||||
|
|
@ -312,6 +306,7 @@ static struct input_device_id *input_match_device(struct input_device_id *id, st
|
|||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Input hotplugging interface - loading event handlers based on
|
||||
* device bitfields.
|
||||
|
|
@ -428,162 +423,27 @@ static void input_call_hotplug(char *verb, struct input_dev *dev)
|
|||
|
||||
#endif
|
||||
|
||||
void input_register_device(struct input_dev *dev)
|
||||
{
|
||||
struct input_handle *handle;
|
||||
struct input_handler *handler;
|
||||
struct input_device_id *id;
|
||||
|
||||
set_bit(EV_SYN, dev->evbit);
|
||||
|
||||
init_MUTEX(&dev->sem);
|
||||
|
||||
/*
|
||||
* If delay and period are pre-set by the driver, then autorepeating
|
||||
* is handled by the driver itself and we don't do it in input.c.
|
||||
*/
|
||||
|
||||
init_timer(&dev->timer);
|
||||
if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD]) {
|
||||
dev->timer.data = (long) dev;
|
||||
dev->timer.function = input_repeat_key;
|
||||
dev->rep[REP_DELAY] = 250;
|
||||
dev->rep[REP_PERIOD] = 33;
|
||||
}
|
||||
|
||||
INIT_LIST_HEAD(&dev->h_list);
|
||||
list_add_tail(&dev->node, &input_dev_list);
|
||||
|
||||
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);
|
||||
|
||||
#ifdef CONFIG_HOTPLUG
|
||||
input_call_hotplug("add", dev);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
|
||||
static struct proc_dir_entry *proc_bus_input_dir;
|
||||
static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
|
||||
static int input_devices_state;
|
||||
|
||||
static inline void input_wakeup_procfs_readers(void)
|
||||
{
|
||||
input_devices_state++;
|
||||
wake_up(&input_devices_poll_wait);
|
||||
#endif
|
||||
}
|
||||
|
||||
void input_unregister_device(struct input_dev *dev)
|
||||
static unsigned int input_devices_poll(struct file *file, poll_table *wait)
|
||||
{
|
||||
struct list_head * node, * next;
|
||||
|
||||
if (!dev) return;
|
||||
|
||||
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);
|
||||
handle->handler->disconnect(handle);
|
||||
int state = input_devices_state;
|
||||
poll_wait(file, &input_devices_poll_wait, wait);
|
||||
if (state != input_devices_state)
|
||||
return POLLIN | POLLRDNORM;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_HOTPLUG
|
||||
input_call_hotplug("remove", dev);
|
||||
#endif
|
||||
|
||||
list_del_init(&dev->node);
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
input_devices_state++;
|
||||
wake_up(&input_devices_poll_wait);
|
||||
#endif
|
||||
}
|
||||
|
||||
void input_register_handler(struct input_handler *handler)
|
||||
{
|
||||
struct input_dev *dev;
|
||||
struct input_handle *handle;
|
||||
struct input_device_id *id;
|
||||
|
||||
if (!handler) return;
|
||||
|
||||
INIT_LIST_HEAD(&handler->h_list);
|
||||
|
||||
if (handler->fops != NULL)
|
||||
input_table[handler->minor >> 5] = handler;
|
||||
|
||||
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);
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
input_devices_state++;
|
||||
wake_up(&input_devices_poll_wait);
|
||||
#endif
|
||||
}
|
||||
|
||||
void input_unregister_handler(struct input_handler *handler)
|
||||
{
|
||||
struct list_head * node, * 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);
|
||||
handler->disconnect(handle);
|
||||
}
|
||||
|
||||
list_del_init(&handler->node);
|
||||
|
||||
if (handler->fops != NULL)
|
||||
input_table[handler->minor >> 5] = NULL;
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
input_devices_state++;
|
||||
wake_up(&input_devices_poll_wait);
|
||||
#endif
|
||||
}
|
||||
|
||||
static int input_open_file(struct inode *inode, struct file *file)
|
||||
{
|
||||
struct input_handler *handler = input_table[iminor(inode) >> 5];
|
||||
struct file_operations *old_fops, *new_fops = NULL;
|
||||
int err;
|
||||
|
||||
/* No load-on-demand here? */
|
||||
if (!handler || !(new_fops = fops_get(handler->fops)))
|
||||
return -ENODEV;
|
||||
|
||||
/*
|
||||
* That's _really_ odd. Usually NULL ->open means "nothing special",
|
||||
* not "no device". Oh, well...
|
||||
*/
|
||||
if (!new_fops->open) {
|
||||
fops_put(new_fops);
|
||||
return -ENODEV;
|
||||
}
|
||||
old_fops = file->f_op;
|
||||
file->f_op = new_fops;
|
||||
|
||||
err = new_fops->open(inode, file);
|
||||
|
||||
if (err) {
|
||||
fops_put(file->f_op);
|
||||
file->f_op = fops_get(old_fops);
|
||||
}
|
||||
fops_put(old_fops);
|
||||
return err;
|
||||
}
|
||||
|
||||
static struct file_operations input_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = input_open_file,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
|
||||
#define SPRINTF_BIT_B(bit, name, max) \
|
||||
do { \
|
||||
len += sprintf(buf + len, "B: %s", name); \
|
||||
|
|
@ -600,16 +460,6 @@ static struct file_operations input_fops = {
|
|||
SPRINTF_BIT_B(bit, name, max); \
|
||||
} while (0)
|
||||
|
||||
|
||||
static unsigned int input_devices_poll(struct file *file, poll_table *wait)
|
||||
{
|
||||
int state = input_devices_state;
|
||||
poll_wait(file, &input_devices_poll_wait, wait);
|
||||
if (state != input_devices_state)
|
||||
return POLLIN | POLLRDNORM;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
|
||||
{
|
||||
struct input_dev *dev;
|
||||
|
|
@ -704,68 +554,225 @@ static int __init input_proc_init(void)
|
|||
struct proc_dir_entry *entry;
|
||||
|
||||
proc_bus_input_dir = proc_mkdir("input", proc_bus);
|
||||
if (proc_bus_input_dir == NULL)
|
||||
if (!proc_bus_input_dir)
|
||||
return -ENOMEM;
|
||||
|
||||
proc_bus_input_dir->owner = THIS_MODULE;
|
||||
|
||||
entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
|
||||
if (entry == NULL) {
|
||||
remove_proc_entry("input", proc_bus);
|
||||
return -ENOMEM;
|
||||
}
|
||||
if (!entry)
|
||||
goto fail1;
|
||||
|
||||
entry->owner = THIS_MODULE;
|
||||
input_fileops = *entry->proc_fops;
|
||||
entry->proc_fops = &input_fileops;
|
||||
entry->proc_fops->poll = input_devices_poll;
|
||||
|
||||
entry = create_proc_read_entry("handlers", 0, proc_bus_input_dir, input_handlers_read, NULL);
|
||||
if (entry == NULL) {
|
||||
remove_proc_entry("devices", proc_bus_input_dir);
|
||||
remove_proc_entry("input", proc_bus);
|
||||
if (!entry)
|
||||
goto fail2;
|
||||
|
||||
entry->owner = THIS_MODULE;
|
||||
|
||||
return 0;
|
||||
|
||||
fail2: remove_proc_entry("devices", proc_bus_input_dir);
|
||||
fail1: remove_proc_entry("input", proc_bus);
|
||||
return -ENOMEM;
|
||||
}
|
||||
entry->owner = THIS_MODULE;
|
||||
return 0;
|
||||
|
||||
static void __exit input_proc_exit(void)
|
||||
{
|
||||
remove_proc_entry("devices", proc_bus_input_dir);
|
||||
remove_proc_entry("handlers", proc_bus_input_dir);
|
||||
remove_proc_entry("input", proc_bus);
|
||||
}
|
||||
|
||||
#else /* !CONFIG_PROC_FS */
|
||||
static inline void input_wakeup_procfs_readers(void) { }
|
||||
static inline int input_proc_init(void) { return 0; }
|
||||
static inline void input_proc_exit(void) { }
|
||||
#endif
|
||||
|
||||
void input_register_device(struct input_dev *dev)
|
||||
{
|
||||
struct input_handle *handle;
|
||||
struct input_handler *handler;
|
||||
struct input_device_id *id;
|
||||
|
||||
set_bit(EV_SYN, dev->evbit);
|
||||
|
||||
init_MUTEX(&dev->sem);
|
||||
|
||||
/*
|
||||
* If delay and period are pre-set by the driver, then autorepeating
|
||||
* is handled by the driver itself and we don't do it in input.c.
|
||||
*/
|
||||
|
||||
init_timer(&dev->timer);
|
||||
if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD]) {
|
||||
dev->timer.data = (long) dev;
|
||||
dev->timer.function = input_repeat_key;
|
||||
dev->rep[REP_DELAY] = 250;
|
||||
dev->rep[REP_PERIOD] = 33;
|
||||
}
|
||||
|
||||
INIT_LIST_HEAD(&dev->h_list);
|
||||
list_add_tail(&dev->node, &input_dev_list);
|
||||
|
||||
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);
|
||||
|
||||
#ifdef CONFIG_HOTPLUG
|
||||
input_call_hotplug("add", dev);
|
||||
#endif
|
||||
|
||||
input_wakeup_procfs_readers();
|
||||
}
|
||||
|
||||
void input_unregister_device(struct input_dev *dev)
|
||||
{
|
||||
struct list_head * node, * next;
|
||||
|
||||
if (!dev) return;
|
||||
|
||||
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);
|
||||
handle->handler->disconnect(handle);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_HOTPLUG
|
||||
input_call_hotplug("remove", dev);
|
||||
#endif
|
||||
|
||||
list_del_init(&dev->node);
|
||||
|
||||
input_wakeup_procfs_readers();
|
||||
}
|
||||
|
||||
void input_register_handler(struct input_handler *handler)
|
||||
{
|
||||
struct input_dev *dev;
|
||||
struct input_handle *handle;
|
||||
struct input_device_id *id;
|
||||
|
||||
if (!handler) return;
|
||||
|
||||
INIT_LIST_HEAD(&handler->h_list);
|
||||
|
||||
if (handler->fops != NULL)
|
||||
input_table[handler->minor >> 5] = handler;
|
||||
|
||||
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);
|
||||
|
||||
input_wakeup_procfs_readers();
|
||||
}
|
||||
|
||||
void input_unregister_handler(struct input_handler *handler)
|
||||
{
|
||||
struct list_head * node, * 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);
|
||||
handler->disconnect(handle);
|
||||
}
|
||||
|
||||
list_del_init(&handler->node);
|
||||
|
||||
if (handler->fops != NULL)
|
||||
input_table[handler->minor >> 5] = NULL;
|
||||
|
||||
input_wakeup_procfs_readers();
|
||||
}
|
||||
|
||||
static int input_open_file(struct inode *inode, struct file *file)
|
||||
{
|
||||
struct input_handler *handler = input_table[iminor(inode) >> 5];
|
||||
struct file_operations *old_fops, *new_fops = NULL;
|
||||
int err;
|
||||
|
||||
/* No load-on-demand here? */
|
||||
if (!handler || !(new_fops = fops_get(handler->fops)))
|
||||
return -ENODEV;
|
||||
|
||||
/*
|
||||
* That's _really_ odd. Usually NULL ->open means "nothing special",
|
||||
* not "no device". Oh, well...
|
||||
*/
|
||||
if (!new_fops->open) {
|
||||
fops_put(new_fops);
|
||||
return -ENODEV;
|
||||
}
|
||||
old_fops = file->f_op;
|
||||
file->f_op = new_fops;
|
||||
|
||||
err = new_fops->open(inode, file);
|
||||
|
||||
if (err) {
|
||||
fops_put(file->f_op);
|
||||
file->f_op = fops_get(old_fops);
|
||||
}
|
||||
fops_put(old_fops);
|
||||
return err;
|
||||
}
|
||||
|
||||
static struct file_operations input_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = input_open_file,
|
||||
};
|
||||
|
||||
struct class *input_class;
|
||||
|
||||
static int __init input_init(void)
|
||||
{
|
||||
int retval = -ENOMEM;
|
||||
int err;
|
||||
|
||||
input_class = class_create(THIS_MODULE, "input");
|
||||
if (IS_ERR(input_class))
|
||||
if (IS_ERR(input_class)) {
|
||||
printk(KERN_ERR "input: unable to register input class\n");
|
||||
return PTR_ERR(input_class);
|
||||
input_proc_init();
|
||||
retval = register_chrdev(INPUT_MAJOR, "input", &input_fops);
|
||||
if (retval) {
|
||||
printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
|
||||
remove_proc_entry("devices", proc_bus_input_dir);
|
||||
remove_proc_entry("handlers", proc_bus_input_dir);
|
||||
remove_proc_entry("input", proc_bus);
|
||||
class_destroy(input_class);
|
||||
return retval;
|
||||
}
|
||||
|
||||
retval = devfs_mk_dir("input");
|
||||
if (retval) {
|
||||
remove_proc_entry("devices", proc_bus_input_dir);
|
||||
remove_proc_entry("handlers", proc_bus_input_dir);
|
||||
remove_proc_entry("input", proc_bus);
|
||||
unregister_chrdev(INPUT_MAJOR, "input");
|
||||
class_destroy(input_class);
|
||||
err = input_proc_init();
|
||||
if (err)
|
||||
goto fail1;
|
||||
|
||||
err = register_chrdev(INPUT_MAJOR, "input", &input_fops);
|
||||
if (err) {
|
||||
printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
|
||||
goto fail2;
|
||||
}
|
||||
return retval;
|
||||
|
||||
err = devfs_mk_dir("input");
|
||||
if (err)
|
||||
goto fail3;
|
||||
|
||||
return 0;
|
||||
|
||||
fail3: unregister_chrdev(INPUT_MAJOR, "input");
|
||||
fail2: input_proc_exit();
|
||||
fail1: class_destroy(input_class);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void __exit input_exit(void)
|
||||
{
|
||||
remove_proc_entry("devices", proc_bus_input_dir);
|
||||
remove_proc_entry("handlers", proc_bus_input_dir);
|
||||
remove_proc_entry("input", proc_bus);
|
||||
|
||||
input_proc_exit();
|
||||
devfs_remove("input");
|
||||
unregister_chrdev(INPUT_MAJOR, "input");
|
||||
class_destroy(input_class);
|
||||
|
|
|
|||
Loading…
Reference in New Issue