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@@ -48,12 +48,6 @@ static LIST_HEAD(input_handler_list);
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static struct input_handler *input_table[8];
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-#ifdef CONFIG_PROC_FS
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-static struct proc_dir_entry *proc_bus_input_dir;
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-static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
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-static int input_devices_state;
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-#endif
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-
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void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
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{
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struct input_handle *handle;
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@@ -312,6 +306,7 @@ static struct input_device_id *input_match_device(struct input_device_id *id, st
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return NULL;
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}
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+
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/*
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* Input hotplugging interface - loading event handlers based on
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* device bitfields.
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@@ -428,6 +423,177 @@ static void input_call_hotplug(char *verb, struct input_dev *dev)
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#endif
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+#ifdef CONFIG_PROC_FS
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+
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+static struct proc_dir_entry *proc_bus_input_dir;
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+static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
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+static int input_devices_state;
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+
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+static inline void input_wakeup_procfs_readers(void)
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+{
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+ input_devices_state++;
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+ wake_up(&input_devices_poll_wait);
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+}
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+
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+static unsigned int input_devices_poll(struct file *file, poll_table *wait)
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+{
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+ int state = input_devices_state;
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+ poll_wait(file, &input_devices_poll_wait, wait);
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+ if (state != input_devices_state)
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+ return POLLIN | POLLRDNORM;
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+ return 0;
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+}
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+
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+#define SPRINTF_BIT_B(bit, name, max) \
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+ do { \
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+ len += sprintf(buf + len, "B: %s", name); \
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+ for (i = NBITS(max) - 1; i >= 0; i--) \
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+ if (dev->bit[i]) break; \
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+ for (; i >= 0; i--) \
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+ len += sprintf(buf + len, "%lx ", dev->bit[i]); \
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+ len += sprintf(buf + len, "\n"); \
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+ } while (0)
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+
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+#define SPRINTF_BIT_B2(bit, name, max, ev) \
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+ do { \
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+ if (test_bit(ev, dev->evbit)) \
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+ SPRINTF_BIT_B(bit, name, max); \
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+ } while (0)
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+
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+static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
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+{
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+ struct input_dev *dev;
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+ struct input_handle *handle;
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+
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+ off_t at = 0;
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+ int i, len, cnt = 0;
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+
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+ list_for_each_entry(dev, &input_dev_list, node) {
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+
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+ len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
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+ dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
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+
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+ len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
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+ len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
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+ len += sprintf(buf + len, "H: Handlers=");
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+
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+ list_for_each_entry(handle, &dev->h_list, d_node)
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+ len += sprintf(buf + len, "%s ", handle->name);
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+
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+ len += sprintf(buf + len, "\n");
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+
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+ SPRINTF_BIT_B(evbit, "EV=", EV_MAX);
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+ SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY);
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+ SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL);
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+ SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS);
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+ SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC);
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+ SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED);
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+ SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND);
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+ SPRINTF_BIT_B2(ffbit, "FF=", FF_MAX, EV_FF);
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+
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+ len += sprintf(buf + len, "\n");
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+
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+ at += len;
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+
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+ if (at >= pos) {
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+ if (!*start) {
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+ *start = buf + (pos - (at - len));
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+ cnt = at - pos;
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+ } else cnt += len;
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+ buf += len;
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+ if (cnt >= count)
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+ break;
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+ }
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+ }
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+
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+ if (&dev->node == &input_dev_list)
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+ *eof = 1;
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+
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+ return (count > cnt) ? cnt : count;
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+}
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+
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+static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
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+{
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+ struct input_handler *handler;
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+
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+ off_t at = 0;
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+ int len = 0, cnt = 0;
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+ int i = 0;
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+
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+ list_for_each_entry(handler, &input_handler_list, node) {
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+
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+ if (handler->fops)
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+ len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
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+ i++, handler->name, handler->minor);
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+ else
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+ len = sprintf(buf, "N: Number=%d Name=%s\n",
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+ i++, handler->name);
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+
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+ at += len;
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+
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+ if (at >= pos) {
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+ if (!*start) {
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+ *start = buf + (pos - (at - len));
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+ cnt = at - pos;
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+ } else cnt += len;
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+ buf += len;
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+ if (cnt >= count)
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+ break;
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+ }
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+ }
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+ if (&handler->node == &input_handler_list)
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+ *eof = 1;
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+
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+ return (count > cnt) ? cnt : count;
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+}
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+
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+static struct file_operations input_fileops;
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+
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+static int __init input_proc_init(void)
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+{
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+ struct proc_dir_entry *entry;
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+
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+ proc_bus_input_dir = proc_mkdir("input", proc_bus);
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+ if (!proc_bus_input_dir)
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+ return -ENOMEM;
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+
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+ proc_bus_input_dir->owner = THIS_MODULE;
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+
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+ entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
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+ if (!entry)
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+ goto fail1;
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+
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+ entry->owner = THIS_MODULE;
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+ input_fileops = *entry->proc_fops;
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+ entry->proc_fops = &input_fileops;
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+ entry->proc_fops->poll = input_devices_poll;
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+
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+ entry = create_proc_read_entry("handlers", 0, proc_bus_input_dir, input_handlers_read, NULL);
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+ if (!entry)
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+ goto fail2;
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+
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+ entry->owner = THIS_MODULE;
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+
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+ return 0;
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+
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+ fail2: remove_proc_entry("devices", proc_bus_input_dir);
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+ fail1: remove_proc_entry("input", proc_bus);
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+ return -ENOMEM;
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+}
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+
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+static void input_proc_exit(void)
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+{
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+ remove_proc_entry("devices", proc_bus_input_dir);
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+ remove_proc_entry("handlers", proc_bus_input_dir);
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+ remove_proc_entry("input", proc_bus);
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+}
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+
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+#else /* !CONFIG_PROC_FS */
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+static inline void input_wakeup_procfs_readers(void) { }
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+static inline int input_proc_init(void) { return 0; }
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+static inline void input_proc_exit(void) { }
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+#endif
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+
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void input_register_device(struct input_dev *dev)
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{
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struct input_handle *handle;
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@@ -464,10 +630,7 @@ void input_register_device(struct input_dev *dev)
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input_call_hotplug("add", dev);
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#endif
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-#ifdef CONFIG_PROC_FS
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- input_devices_state++;
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- wake_up(&input_devices_poll_wait);
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-#endif
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+ input_wakeup_procfs_readers();
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}
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void input_unregister_device(struct input_dev *dev)
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@@ -491,10 +654,7 @@ void input_unregister_device(struct input_dev *dev)
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list_del_init(&dev->node);
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-#ifdef CONFIG_PROC_FS
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- input_devices_state++;
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- wake_up(&input_devices_poll_wait);
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-#endif
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+ input_wakeup_procfs_readers();
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}
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void input_register_handler(struct input_handler *handler)
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@@ -518,10 +678,7 @@ void input_register_handler(struct input_handler *handler)
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if ((handle = handler->connect(handler, dev, id)))
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input_link_handle(handle);
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-#ifdef CONFIG_PROC_FS
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- input_devices_state++;
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- wake_up(&input_devices_poll_wait);
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-#endif
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+ input_wakeup_procfs_readers();
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}
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void input_unregister_handler(struct input_handler *handler)
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@@ -540,10 +697,7 @@ void input_unregister_handler(struct input_handler *handler)
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if (handler->fops != NULL)
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input_table[handler->minor >> 5] = NULL;
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-#ifdef CONFIG_PROC_FS
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- input_devices_state++;
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- wake_up(&input_devices_poll_wait);
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-#endif
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+ input_wakeup_procfs_readers();
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}
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static int input_open_file(struct inode *inode, struct file *file)
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@@ -582,190 +736,43 @@ static struct file_operations input_fops = {
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.open = input_open_file,
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};
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-#ifdef CONFIG_PROC_FS
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-
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-#define SPRINTF_BIT_B(bit, name, max) \
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- do { \
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- len += sprintf(buf + len, "B: %s", name); \
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- for (i = NBITS(max) - 1; i >= 0; i--) \
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- if (dev->bit[i]) break; \
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- for (; i >= 0; i--) \
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- len += sprintf(buf + len, "%lx ", dev->bit[i]); \
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- len += sprintf(buf + len, "\n"); \
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- } while (0)
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-
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-#define SPRINTF_BIT_B2(bit, name, max, ev) \
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- do { \
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- if (test_bit(ev, dev->evbit)) \
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- SPRINTF_BIT_B(bit, name, max); \
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- } while (0)
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-
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-
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-static unsigned int input_devices_poll(struct file *file, poll_table *wait)
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-{
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- int state = input_devices_state;
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- poll_wait(file, &input_devices_poll_wait, wait);
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- if (state != input_devices_state)
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- return POLLIN | POLLRDNORM;
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- return 0;
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-}
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+struct class *input_class;
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-static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
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+static int __init input_init(void)
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{
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- struct input_dev *dev;
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- struct input_handle *handle;
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-
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- off_t at = 0;
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- int i, len, cnt = 0;
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-
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- list_for_each_entry(dev, &input_dev_list, node) {
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-
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- len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
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- dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
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-
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- len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
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- len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
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- len += sprintf(buf + len, "H: Handlers=");
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-
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- list_for_each_entry(handle, &dev->h_list, d_node)
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- len += sprintf(buf + len, "%s ", handle->name);
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-
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- len += sprintf(buf + len, "\n");
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-
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- SPRINTF_BIT_B(evbit, "EV=", EV_MAX);
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- SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY);
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- SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL);
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- SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS);
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- SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC);
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- SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED);
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- SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND);
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- SPRINTF_BIT_B2(ffbit, "FF=", FF_MAX, EV_FF);
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-
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- len += sprintf(buf + len, "\n");
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-
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- at += len;
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+ int err;
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- if (at >= pos) {
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- if (!*start) {
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- *start = buf + (pos - (at - len));
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- cnt = at - pos;
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- } else cnt += len;
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- buf += len;
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- if (cnt >= count)
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- break;
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- }
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+ input_class = class_create(THIS_MODULE, "input");
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+ if (IS_ERR(input_class)) {
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+ printk(KERN_ERR "input: unable to register input class\n");
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+ return PTR_ERR(input_class);
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}
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- if (&dev->node == &input_dev_list)
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- *eof = 1;
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-
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- return (count > cnt) ? cnt : count;
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-}
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-
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-static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
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-{
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- struct input_handler *handler;
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-
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- off_t at = 0;
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- int len = 0, cnt = 0;
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- int i = 0;
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-
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- list_for_each_entry(handler, &input_handler_list, node) {
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-
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- if (handler->fops)
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- len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
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- i++, handler->name, handler->minor);
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- else
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- len = sprintf(buf, "N: Number=%d Name=%s\n",
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- i++, handler->name);
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-
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- at += len;
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+ err = input_proc_init();
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+ if (err)
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+ goto fail1;
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- if (at >= pos) {
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- if (!*start) {
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- *start = buf + (pos - (at - len));
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- cnt = at - pos;
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- } else cnt += len;
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- buf += len;
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- if (cnt >= count)
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- break;
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- }
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+ err = register_chrdev(INPUT_MAJOR, "input", &input_fops);
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+ if (err) {
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+ printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
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+ goto fail2;
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}
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- if (&handler->node == &input_handler_list)
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- *eof = 1;
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-
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- return (count > cnt) ? cnt : count;
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-}
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-
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-static struct file_operations input_fileops;
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-static int __init input_proc_init(void)
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-{
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- struct proc_dir_entry *entry;
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+ err = devfs_mk_dir("input");
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+ if (err)
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+ goto fail3;
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- proc_bus_input_dir = proc_mkdir("input", proc_bus);
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- if (proc_bus_input_dir == NULL)
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- return -ENOMEM;
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- proc_bus_input_dir->owner = THIS_MODULE;
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- entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
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- if (entry == NULL) {
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- remove_proc_entry("input", proc_bus);
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- return -ENOMEM;
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- }
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- entry->owner = THIS_MODULE;
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- input_fileops = *entry->proc_fops;
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|
|
- 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);
|
|
|
- return -ENOMEM;
|
|
|
- }
|
|
|
- entry->owner = THIS_MODULE;
|
|
|
return 0;
|
|
|
-}
|
|
|
-#else /* !CONFIG_PROC_FS */
|
|
|
-static inline int input_proc_init(void) { return 0; }
|
|
|
-#endif
|
|
|
|
|
|
-struct class *input_class;
|
|
|
-
|
|
|
-static int __init input_init(void)
|
|
|
-{
|
|
|
- int retval = -ENOMEM;
|
|
|
-
|
|
|
- input_class = class_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_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);
|
|
|
- }
|
|
|
- return retval;
|
|
|
+ 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);
|