#include <linux/random.h>
#include <linux/major.h>
#include <linux/proc_fs.h>
-#include <linux/kobject_uevent.h>
+#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/poll.h>
#include <linux/device.h>
-#include <linux/devfs_fs_kernel.h>
+#include <linux/mutex.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
MODULE_DESCRIPTION("Input core");
MODULE_LICENSE("GPL");
+EXPORT_SYMBOL(input_allocate_device);
EXPORT_SYMBOL(input_register_device);
EXPORT_SYMBOL(input_unregister_device);
EXPORT_SYMBOL(input_register_handler);
EXPORT_SYMBOL(input_accept_process);
EXPORT_SYMBOL(input_flush_device);
EXPORT_SYMBOL(input_event);
-EXPORT_SYMBOL(input_class);
+EXPORT_SYMBOL_GPL(input_class);
#define INPUT_DEVICES 256
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;
break;
+ case EV_SW:
+
+ if (code > SW_MAX || !test_bit(code, dev->swbit) || !!test_bit(code, dev->sw) == value)
+ return;
+
+ change_bit(code, dev->sw);
+
+ break;
+
case EV_ABS:
if (code > ABS_MAX || !test_bit(code, dev->absbit))
if (code > SND_MAX || !test_bit(code, dev->sndbit))
return;
+ if (!!test_bit(code, dev->snd) != !!value)
+ change_bit(code, dev->snd);
+
if (dev->event) dev->event(dev, type, code, value);
break;
int input_open_device(struct input_handle *handle)
{
+ struct input_dev *dev = handle->dev;
+ int err;
+
+ err = mutex_lock_interruptible(&dev->mutex);
+ if (err)
+ return err;
+
handle->open++;
- if (handle->dev->open)
- return handle->dev->open(handle->dev);
- return 0;
+
+ if (!dev->users++ && dev->open)
+ err = dev->open(dev);
+
+ if (err)
+ handle->open--;
+
+ mutex_unlock(&dev->mutex);
+
+ return err;
}
int input_flush_device(struct input_handle* handle, struct file* file)
void input_close_device(struct input_handle *handle)
{
+ struct input_dev *dev = handle->dev;
+
input_release_device(handle);
- if (handle->dev->close)
- handle->dev->close(handle->dev);
+
+ mutex_lock(&dev->mutex);
+
+ if (!--dev->users && dev->close)
+ dev->close(dev);
handle->open--;
+
+ mutex_unlock(&dev->mutex);
}
static void input_link_handle(struct input_handle *handle)
for (; id->flags || id->driver_info; id++) {
if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
- if (id->id.bustype != dev->id.bustype)
+ if (id->bustype != dev->id.bustype)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
- if (id->id.vendor != dev->id.vendor)
+ if (id->vendor != dev->id.vendor)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
- if (id->id.product != dev->id.product)
+ if (id->product != dev->id.product)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
- if (id->id.version != dev->id.version)
+ if (id->version != dev->id.version)
continue;
MATCH_BIT(evbit, EV_MAX);
MATCH_BIT(ledbit, LED_MAX);
MATCH_BIT(sndbit, SND_MAX);
MATCH_BIT(ffbit, FF_MAX);
+ MATCH_BIT(swbit, SW_MAX);
return id;
}
return NULL;
}
-/*
- * Input hotplugging interface - loading event handlers based on
- * device bitfields.
- */
+#ifdef CONFIG_PROC_FS
-#ifdef CONFIG_HOTPLUG
+static struct proc_dir_entry *proc_bus_input_dir;
+static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
+static int input_devices_state;
-/*
- * Input hotplugging invokes what /proc/sys/kernel/hotplug says
- * (normally /sbin/hotplug) when input devices get added or removed.
- *
- * This invokes a user mode policy agent, typically helping to load driver
- * or other modules, configure the device, and more. Drivers can provide
- * a MODULE_DEVICE_TABLE to help with module loading subtasks.
- *
- */
+static inline void input_wakeup_procfs_readers(void)
+{
+ input_devices_state++;
+ wake_up(&input_devices_poll_wait);
+}
-#define SPRINTF_BIT_A(bit, name, max) \
- do { \
- envp[i++] = scratch; \
- scratch += sprintf(scratch, name); \
- for (j = NBITS(max) - 1; j >= 0; j--) \
- if (dev->bit[j]) break; \
- for (; j >= 0; j--) \
- scratch += sprintf(scratch, "%lx ", dev->bit[j]); \
- scratch++; \
- } while (0)
+static unsigned int input_proc_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;
+}
-#define SPRINTF_BIT_A2(bit, name, max, ev) \
- do { \
- if (test_bit(ev, dev->evbit)) \
- SPRINTF_BIT_A(bit, name, max); \
- } while (0)
+static struct list_head *list_get_nth_element(struct list_head *list, loff_t *pos)
+{
+ struct list_head *node;
+ loff_t i = 0;
+
+ list_for_each(node, list)
+ if (i++ == *pos)
+ return node;
+
+ return NULL;
+}
-static void input_call_hotplug(char *verb, struct input_dev *dev)
+static struct list_head *list_get_next_element(struct list_head *list, struct list_head *element, loff_t *pos)
{
- char *argv[3], **envp, *buf, *scratch;
- int i = 0, j, value;
+ if (element->next == list)
+ return NULL;
- if (!hotplug_path[0]) {
- printk(KERN_ERR "input.c: calling hotplug without a hotplug agent defined\n");
- return;
- }
- if (in_interrupt()) {
- printk(KERN_ERR "input.c: calling hotplug from interrupt\n");
- return;
- }
- if (!current->fs->root) {
- printk(KERN_WARNING "input.c: calling hotplug without valid filesystem\n");
- return;
- }
- if (!(envp = (char **) kmalloc(20 * sizeof(char *), GFP_KERNEL))) {
- printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
- return;
- }
- if (!(buf = kmalloc(1024, GFP_KERNEL))) {
- kfree (envp);
- printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
- return;
- }
+ ++(*pos);
+ return element->next;
+}
- argv[0] = hotplug_path;
- argv[1] = "input";
- argv[2] = NULL;
+static void *input_devices_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ /* acquire lock here ... Yes, we do need locking, I knowi, I know... */
- envp[i++] = "HOME=/";
- envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
+ return list_get_nth_element(&input_dev_list, pos);
+}
- scratch = buf;
+static void *input_devices_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ return list_get_next_element(&input_dev_list, v, pos);
+}
- envp[i++] = scratch;
- scratch += sprintf(scratch, "ACTION=%s", verb) + 1;
+static void input_devices_seq_stop(struct seq_file *seq, void *v)
+{
+ /* release lock here */
+}
- envp[i++] = scratch;
- scratch += sprintf(scratch, "PRODUCT=%x/%x/%x/%x",
- dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version) + 1;
+static void input_seq_print_bitmap(struct seq_file *seq, const char *name,
+ unsigned long *bitmap, int max)
+{
+ int i;
- if (dev->name) {
- envp[i++] = scratch;
- scratch += sprintf(scratch, "NAME=%s", dev->name) + 1;
- }
+ for (i = NBITS(max) - 1; i > 0; i--)
+ if (bitmap[i])
+ break;
- if (dev->phys) {
- envp[i++] = scratch;
- scratch += sprintf(scratch, "PHYS=%s", dev->phys) + 1;
- }
+ seq_printf(seq, "B: %s=", name);
+ for (; i >= 0; i--)
+ seq_printf(seq, "%lx%s", bitmap[i], i > 0 ? " " : "");
+ seq_putc(seq, '\n');
+}
+
+static int input_devices_seq_show(struct seq_file *seq, void *v)
+{
+ struct input_dev *dev = container_of(v, struct input_dev, node);
+ const char *path = kobject_get_path(&dev->cdev.kobj, GFP_KERNEL);
+ struct input_handle *handle;
+
+ seq_printf(seq, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
+ dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
+
+ 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, "H: Handlers=");
+
+ list_for_each_entry(handle, &dev->h_list, d_node)
+ seq_printf(seq, "%s ", handle->name);
+ seq_putc(seq, '\n');
+
+ input_seq_print_bitmap(seq, "EV", dev->evbit, EV_MAX);
+ if (test_bit(EV_KEY, dev->evbit))
+ input_seq_print_bitmap(seq, "KEY", dev->keybit, KEY_MAX);
+ if (test_bit(EV_REL, dev->evbit))
+ input_seq_print_bitmap(seq, "REL", dev->relbit, REL_MAX);
+ if (test_bit(EV_ABS, dev->evbit))
+ input_seq_print_bitmap(seq, "ABS", dev->absbit, ABS_MAX);
+ if (test_bit(EV_MSC, dev->evbit))
+ input_seq_print_bitmap(seq, "MSC", dev->mscbit, MSC_MAX);
+ if (test_bit(EV_LED, dev->evbit))
+ input_seq_print_bitmap(seq, "LED", dev->ledbit, LED_MAX);
+ if (test_bit(EV_SND, dev->evbit))
+ input_seq_print_bitmap(seq, "SND", dev->sndbit, SND_MAX);
+ if (test_bit(EV_FF, dev->evbit))
+ input_seq_print_bitmap(seq, "FF", dev->ffbit, FF_MAX);
+ if (test_bit(EV_SW, dev->evbit))
+ input_seq_print_bitmap(seq, "SW", dev->swbit, SW_MAX);
+
+ seq_putc(seq, '\n');
+
+ kfree(path);
+ return 0;
+}
- SPRINTF_BIT_A(evbit, "EV=", EV_MAX);
- SPRINTF_BIT_A2(keybit, "KEY=", KEY_MAX, EV_KEY);
- SPRINTF_BIT_A2(relbit, "REL=", REL_MAX, EV_REL);
- SPRINTF_BIT_A2(absbit, "ABS=", ABS_MAX, EV_ABS);
- SPRINTF_BIT_A2(mscbit, "MSC=", MSC_MAX, EV_MSC);
- SPRINTF_BIT_A2(ledbit, "LED=", LED_MAX, EV_LED);
- SPRINTF_BIT_A2(sndbit, "SND=", SND_MAX, EV_SND);
- SPRINTF_BIT_A2(ffbit, "FF=", FF_MAX, EV_FF);
+static struct seq_operations input_devices_seq_ops = {
+ .start = input_devices_seq_start,
+ .next = input_devices_seq_next,
+ .stop = input_devices_seq_stop,
+ .show = input_devices_seq_show,
+};
- envp[i++] = NULL;
+static int input_proc_devices_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &input_devices_seq_ops);
+}
-#ifdef INPUT_DEBUG
- printk(KERN_DEBUG "input.c: calling %s %s [%s %s %s %s %s]\n",
- argv[0], argv[1], envp[0], envp[1], envp[2], envp[3], envp[4]);
-#endif
+static struct file_operations input_devices_fileops = {
+ .owner = THIS_MODULE,
+ .open = input_proc_devices_open,
+ .poll = input_proc_devices_poll,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
- value = call_usermodehelper(argv [0], argv, envp, 0);
+static void *input_handlers_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ /* acquire lock here ... Yes, we do need locking, I knowi, I know... */
+ seq->private = (void *)(unsigned long)*pos;
+ return list_get_nth_element(&input_handler_list, pos);
+}
- kfree(buf);
- kfree(envp);
+static void *input_handlers_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ seq->private = (void *)(unsigned long)(*pos + 1);
+ return list_get_next_element(&input_handler_list, v, pos);
+}
-#ifdef INPUT_DEBUG
- if (value != 0)
- printk(KERN_DEBUG "input.c: hotplug returned %d\n", value);
-#endif
+static void input_handlers_seq_stop(struct seq_file *seq, void *v)
+{
+ /* release lock here */
+}
+
+static int input_handlers_seq_show(struct seq_file *seq, void *v)
+{
+ struct input_handler *handler = container_of(v, struct input_handler, node);
+
+ seq_printf(seq, "N: Number=%ld Name=%s",
+ (unsigned long)seq->private, handler->name);
+ if (handler->fops)
+ seq_printf(seq, " Minor=%d", handler->minor);
+ seq_putc(seq, '\n');
+
+ return 0;
+}
+static struct seq_operations input_handlers_seq_ops = {
+ .start = input_handlers_seq_start,
+ .next = input_handlers_seq_next,
+ .stop = input_handlers_seq_stop,
+ .show = input_handlers_seq_show,
+};
+
+static int input_proc_handlers_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &input_handlers_seq_ops);
}
+static struct file_operations input_handlers_fileops = {
+ .owner = THIS_MODULE,
+ .open = input_proc_handlers_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+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)
+ return -ENOMEM;
+
+ proc_bus_input_dir->owner = THIS_MODULE;
+
+ entry = create_proc_entry("devices", 0, proc_bus_input_dir);
+ if (!entry)
+ goto fail1;
+
+ entry->owner = THIS_MODULE;
+ entry->proc_fops = &input_devices_fileops;
+
+ entry = create_proc_entry("handlers", 0, proc_bus_input_dir);
+ if (!entry)
+ goto fail2;
+
+ entry->owner = THIS_MODULE;
+ entry->proc_fops = &input_handlers_fileops;
+
+ return 0;
+
+ fail2: remove_proc_entry("devices", proc_bus_input_dir);
+ fail1: remove_proc_entry("input", proc_bus);
+ return -ENOMEM;
+}
+
+static void 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)
+#define INPUT_DEV_STRING_ATTR_SHOW(name) \
+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; \
+} \
+static CLASS_DEVICE_ATTR(name, S_IRUGO, input_dev_show_##name, NULL);
+
+INPUT_DEV_STRING_ATTR_SHOW(name);
+INPUT_DEV_STRING_ATTR_SHOW(phys);
+INPUT_DEV_STRING_ATTR_SHOW(uniq);
+
+static int input_print_modalias_bits(char *buf, int size,
+ char name, unsigned long *bm,
+ unsigned int min_bit, unsigned int max_bit)
+{
+ int len = 0, i;
+
+ len += snprintf(buf, max(size, 0), "%c", name);
+ for (i = min_bit; i < max_bit; i++)
+ if (bm[LONG(i)] & BIT(i))
+ len += snprintf(buf + len, max(size - len, 0), "%X,", i);
+ return len;
+}
+
+static int input_print_modalias(char *buf, int size, struct input_dev *id,
+ int add_cr)
+{
+ int len;
+
+ len = snprintf(buf, max(size, 0),
+ "input:b%04Xv%04Xp%04Xe%04X-",
+ id->id.bustype, id->id.vendor,
+ id->id.product, id->id.version);
+
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'e', id->evbit, 0, EV_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'k', id->keybit, KEY_MIN_INTERESTING, KEY_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'r', id->relbit, 0, REL_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'a', id->absbit, 0, ABS_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'm', id->mscbit, 0, MSC_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'l', id->ledbit, 0, LED_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 's', id->sndbit, 0, SND_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'f', id->ffbit, 0, FF_MAX);
+ len += input_print_modalias_bits(buf + len, size - len,
+ 'w', id->swbit, 0, SW_MAX);
+
+ if (add_cr)
+ len += snprintf(buf + len, max(size - len, 0), "\n");
+
+ return len;
+}
+
+static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf)
+{
+ struct input_dev *id = to_input_dev(dev);
+ ssize_t len;
+
+ len = input_print_modalias(buf, PAGE_SIZE, id, 1);
+
+ return min_t(int, len, PAGE_SIZE);
+}
+static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
+
+static struct attribute *input_dev_attrs[] = {
+ &class_device_attr_name.attr,
+ &class_device_attr_phys.attr,
+ &class_device_attr_uniq.attr,
+ &class_device_attr_modalias.attr,
+ NULL
+};
+
+static struct attribute_group input_dev_attr_group = {
+ .attrs = input_dev_attrs,
+};
+
+#define INPUT_DEV_ID_ATTR(name) \
+static ssize_t input_dev_show_id_##name(struct class_device *dev, char *buf) \
+{ \
+ struct input_dev *input_dev = to_input_dev(dev); \
+ return scnprintf(buf, PAGE_SIZE, "%04x\n", input_dev->id.name); \
+} \
+static CLASS_DEVICE_ATTR(name, S_IRUGO, input_dev_show_id_##name, NULL);
+
+INPUT_DEV_ID_ATTR(bustype);
+INPUT_DEV_ID_ATTR(vendor);
+INPUT_DEV_ID_ATTR(product);
+INPUT_DEV_ID_ATTR(version);
+
+static struct attribute *input_dev_id_attrs[] = {
+ &class_device_attr_bustype.attr,
+ &class_device_attr_vendor.attr,
+ &class_device_attr_product.attr,
+ &class_device_attr_version.attr,
+ NULL
+};
+
+static struct attribute_group input_dev_id_attr_group = {
+ .name = "id",
+ .attrs = input_dev_id_attrs,
+};
+
+static int input_print_bitmap(char *buf, int buf_size, unsigned long *bitmap,
+ int max, int add_cr)
+{
+ int i;
+ int len = 0;
+
+ for (i = NBITS(max) - 1; i > 0; i--)
+ if (bitmap[i])
+ break;
+
+ for (; i >= 0; i--)
+ len += snprintf(buf + len, max(buf_size - len, 0),
+ "%lx%s", bitmap[i], i > 0 ? " " : "");
+
+ if (add_cr)
+ len += snprintf(buf + len, max(buf_size - len, 0), "\n");
+
+ return len;
+}
+
+#define INPUT_DEV_CAP_ATTR(ev, bm) \
+static ssize_t input_dev_show_cap_##bm(struct class_device *dev, char *buf) \
+{ \
+ struct input_dev *input_dev = to_input_dev(dev); \
+ int len = input_print_bitmap(buf, PAGE_SIZE, \
+ input_dev->bm##bit, ev##_MAX, 1); \
+ return min_t(int, len, PAGE_SIZE); \
+} \
+static CLASS_DEVICE_ATTR(bm, S_IRUGO, input_dev_show_cap_##bm, NULL);
+
+INPUT_DEV_CAP_ATTR(EV, ev);
+INPUT_DEV_CAP_ATTR(KEY, key);
+INPUT_DEV_CAP_ATTR(REL, rel);
+INPUT_DEV_CAP_ATTR(ABS, abs);
+INPUT_DEV_CAP_ATTR(MSC, msc);
+INPUT_DEV_CAP_ATTR(LED, led);
+INPUT_DEV_CAP_ATTR(SND, snd);
+INPUT_DEV_CAP_ATTR(FF, ff);
+INPUT_DEV_CAP_ATTR(SW, sw);
+
+static struct attribute *input_dev_caps_attrs[] = {
+ &class_device_attr_ev.attr,
+ &class_device_attr_key.attr,
+ &class_device_attr_rel.attr,
+ &class_device_attr_abs.attr,
+ &class_device_attr_msc.attr,
+ &class_device_attr_led.attr,
+ &class_device_attr_snd.attr,
+ &class_device_attr_ff.attr,
+ &class_device_attr_sw.attr,
+ NULL
+};
+
+static struct attribute_group input_dev_caps_attr_group = {
+ .name = "capabilities",
+ .attrs = input_dev_caps_attrs,
+};
+
+static void input_dev_release(struct class_device *class_dev)
+{
+ struct input_dev *dev = to_input_dev(class_dev);
+
+ kfree(dev);
+ module_put(THIS_MODULE);
+}
+
+/*
+ * Input uevent interface - loading event handlers based on
+ * device bitfields.
+ */
+static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index,
+ char *buffer, int buffer_size, int *cur_len,
+ const char *name, unsigned long *bitmap, int max)
+{
+ if (*cur_index >= num_envp - 1)
+ return -ENOMEM;
+
+ envp[*cur_index] = buffer + *cur_len;
+
+ *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), name);
+ if (*cur_len >= buffer_size)
+ return -ENOMEM;
+
+ *cur_len += input_print_bitmap(buffer + *cur_len,
+ max(buffer_size - *cur_len, 0),
+ bitmap, max, 0) + 1;
+ if (*cur_len > buffer_size)
+ return -ENOMEM;
+
+ (*cur_index)++;
+ return 0;
+}
+
+static int input_add_uevent_modalias_var(char **envp, int num_envp, int *cur_index,
+ char *buffer, int buffer_size, int *cur_len,
+ struct input_dev *dev)
{
+ if (*cur_index >= num_envp - 1)
+ return -ENOMEM;
+
+ envp[*cur_index] = buffer + *cur_len;
+
+ *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0),
+ "MODALIAS=");
+ if (*cur_len >= buffer_size)
+ return -ENOMEM;
+
+ *cur_len += input_print_modalias(buffer + *cur_len,
+ max(buffer_size - *cur_len, 0),
+ dev, 0) + 1;
+ if (*cur_len > buffer_size)
+ return -ENOMEM;
+
+ (*cur_index)++;
+ return 0;
+}
+
+#define INPUT_ADD_HOTPLUG_VAR(fmt, val...) \
+ do { \
+ int err = add_uevent_var(envp, num_envp, &i, \
+ buffer, buffer_size, &len, \
+ fmt, val); \
+ if (err) \
+ return err; \
+ } while (0)
+
+#define INPUT_ADD_HOTPLUG_BM_VAR(name, bm, max) \
+ do { \
+ int err = input_add_uevent_bm_var(envp, num_envp, &i, \
+ buffer, buffer_size, &len, \
+ name, bm, max); \
+ if (err) \
+ return err; \
+ } while (0)
+
+#define INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev) \
+ do { \
+ int err = input_add_uevent_modalias_var(envp, \
+ num_envp, &i, \
+ buffer, buffer_size, &len, \
+ dev); \
+ if (err) \
+ return err; \
+ } while (0)
+
+static int input_dev_uevent(struct class_device *cdev, char **envp,
+ int num_envp, char *buffer, int buffer_size)
+{
+ struct input_dev *dev = to_input_dev(cdev);
+ int i = 0;
+ int len = 0;
+
+ INPUT_ADD_HOTPLUG_VAR("PRODUCT=%x/%x/%x/%x",
+ dev->id.bustype, dev->id.vendor,
+ dev->id.product, dev->id.version);
+ if (dev->name)
+ INPUT_ADD_HOTPLUG_VAR("NAME=\"%s\"", dev->name);
+ if (dev->phys)
+ INPUT_ADD_HOTPLUG_VAR("PHYS=\"%s\"", dev->phys);
+ if (dev->uniq)
+ INPUT_ADD_HOTPLUG_VAR("UNIQ=\"%s\"", dev->uniq);
+
+ INPUT_ADD_HOTPLUG_BM_VAR("EV=", dev->evbit, EV_MAX);
+ if (test_bit(EV_KEY, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("KEY=", dev->keybit, KEY_MAX);
+ if (test_bit(EV_REL, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("REL=", dev->relbit, REL_MAX);
+ if (test_bit(EV_ABS, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("ABS=", dev->absbit, ABS_MAX);
+ if (test_bit(EV_MSC, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("MSC=", dev->mscbit, MSC_MAX);
+ if (test_bit(EV_LED, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("LED=", dev->ledbit, LED_MAX);
+ if (test_bit(EV_SND, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("SND=", dev->sndbit, SND_MAX);
+ if (test_bit(EV_FF, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("FF=", dev->ffbit, FF_MAX);
+ if (test_bit(EV_SW, dev->evbit))
+ INPUT_ADD_HOTPLUG_BM_VAR("SW=", dev->swbit, SW_MAX);
+
+ INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev);
+
+ envp[i] = NULL;
+ return 0;
+}
+
+struct class input_class = {
+ .name = "input",
+ .release = input_dev_release,
+ .uevent = input_dev_uevent,
+};
+
+struct input_dev *input_allocate_device(void)
+{
+ struct input_dev *dev;
+
+ dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
+ if (dev) {
+ dev->dynalloc = 1;
+ dev->cdev.class = &input_class;
+ class_device_initialize(&dev->cdev);
+ INIT_LIST_HEAD(&dev->h_list);
+ INIT_LIST_HEAD(&dev->node);
+ }
+
+ return dev;
+}
+
+int input_register_device(struct input_dev *dev)
+{
+ static atomic_t input_no = ATOMIC_INIT(0);
struct input_handle *handle;
struct input_handler *handler;
struct input_device_id *id;
+ const char *path;
+ int error;
+
+ if (!dev->dynalloc) {
+ printk(KERN_WARNING "input: device %s is statically allocated, will not register\n"
+ "Please convert to input_allocate_device() or contact dtor_core@ameritech.net\n",
+ dev->name ? dev->name : "<Unknown>");
+ return -EINVAL;
+ }
+ mutex_init(&dev->mutex);
set_bit(EV_SYN, dev->evbit);
/*
INIT_LIST_HEAD(&dev->h_list);
list_add_tail(&dev->node, &input_dev_list);
+ dev->cdev.class = &input_class;
+ snprintf(dev->cdev.class_id, sizeof(dev->cdev.class_id),
+ "input%ld", (unsigned long) atomic_inc_return(&input_no) - 1);
+
+ 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;
+
+ __module_get(THIS_MODULE);
+
+ 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);
-#ifdef CONFIG_HOTPLUG
- input_call_hotplug("add", dev);
-#endif
+ input_wakeup_procfs_readers();
-#ifdef CONFIG_PROC_FS
- input_devices_state++;
- wake_up(&input_devices_poll_wait);
-#endif
+ 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;
}
void input_unregister_device(struct input_dev *dev)
handle->handler->disconnect(handle);
}
-#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
+ 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);
+ class_device_unregister(&dev->cdev);
+
+ input_wakeup_procfs_readers();
}
void input_register_handler(struct input_handler *handler)
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
+ input_wakeup_procfs_readers();
}
void input_unregister_handler(struct input_handler *handler)
if (handler->fops != NULL)
input_table[handler->minor >> 5] = NULL;
-#ifdef CONFIG_PROC_FS
- input_devices_state++;
- wake_up(&input_devices_poll_wait);
-#endif
+ 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;
+ const struct file_operations *old_fops, *new_fops = NULL;
int err;
/* No load-on-demand here? */
.open = input_open_file,
};
-#ifdef CONFIG_PROC_FS
-
-#define SPRINTF_BIT_B(bit, name, max) \
- do { \
- len += sprintf(buf + len, "B: %s", name); \
- for (i = NBITS(max) - 1; i >= 0; i--) \
- if (dev->bit[i]) break; \
- for (; i >= 0; i--) \
- len += sprintf(buf + len, "%lx ", dev->bit[i]); \
- len += sprintf(buf + len, "\n"); \
- } while (0)
-
-#define SPRINTF_BIT_B2(bit, name, max, ev) \
- do { \
- if (test_bit(ev, dev->evbit)) \
- 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)
+static int __init input_init(void)
{
- struct input_dev *dev;
- struct input_handle *handle;
-
- off_t at = 0;
- int i, len, cnt = 0;
-
- list_for_each_entry(dev, &input_dev_list, node) {
-
- len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
- dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
-
- len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
- len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
- len += sprintf(buf + len, "H: Handlers=");
+ int err;
- list_for_each_entry(handle, &dev->h_list, d_node)
- len += sprintf(buf + len, "%s ", handle->name);
-
- len += sprintf(buf + len, "\n");
-
- SPRINTF_BIT_B(evbit, "EV=", EV_MAX);
- SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY);
- SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL);
- SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS);
- SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC);
- SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED);
- SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND);
- SPRINTF_BIT_B2(ffbit, "FF=", FF_MAX, EV_FF);
-
- len += sprintf(buf + len, "\n");
-
- at += len;
-
- if (at >= pos) {
- if (!*start) {
- *start = buf + (pos - (at - len));
- cnt = at - pos;
- } else cnt += len;
- buf += len;
- if (cnt >= count)
- break;
- }
+ err = class_register(&input_class);
+ if (err) {
+ printk(KERN_ERR "input: unable to register input_dev class\n");
+ return err;
}
- if (&dev->node == &input_dev_list)
- *eof = 1;
-
- return (count > cnt) ? cnt : count;
-}
+ err = input_proc_init();
+ if (err)
+ goto fail1;
-static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
-{
- struct input_handler *handler;
-
- off_t at = 0;
- int len = 0, cnt = 0;
- int i = 0;
-
- list_for_each_entry(handler, &input_handler_list, node) {
-
- if (handler->fops)
- len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
- i++, handler->name, handler->minor);
- else
- len = sprintf(buf, "N: Number=%d Name=%s\n",
- i++, handler->name);
-
- at += len;
-
- if (at >= pos) {
- if (!*start) {
- *start = buf + (pos - (at - len));
- cnt = at - pos;
- } else cnt += len;
- buf += len;
- if (cnt >= count)
- break;
- }
+ err = register_chrdev(INPUT_MAJOR, "input", &input_fops);
+ if (err) {
+ printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
+ goto fail2;
}
- if (&handler->node == &input_handler_list)
- *eof = 1;
-
- return (count > cnt) ? cnt : count;
-}
-
-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)
- 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;
- }
- entry->owner = THIS_MODULE;
- 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);
- return -ENOMEM;
- }
- entry->owner = THIS_MODULE;
return 0;
-}
-#else /* !CONFIG_PROC_FS */
-static inline int input_proc_init(void) { return 0; }
-#endif
-
-struct class_simple *input_class;
-
-static int __init input_init(void)
-{
- int retval = -ENOMEM;
- input_class = class_simple_create(THIS_MODULE, "input");
- if (IS_ERR(input_class))
- 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_simple_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_simple_destroy(input_class);
- }
- return retval;
+ fail2: input_proc_exit();
+ fail1: class_unregister(&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);
-
- devfs_remove("input");
+ input_proc_exit();
unregister_chrdev(INPUT_MAJOR, "input");
- class_simple_destroy(input_class);
+ class_unregister(&input_class);
}
subsys_initcall(input_init);
git://git.onelab.eu / linux-2.6.git / blobdiff