#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/poll.h>
+#include <linux/gfp.h>
#include <acpi/acpi_drivers.h>
#include <net/netlink.h>
#include <net/genetlink.h>
+#include "internal.h"
+
#define _COMPONENT ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("event");
+#ifdef CONFIG_ACPI_PROC_EVENT
/* Global vars for handling event proc entry */
static DEFINE_SPINLOCK(acpi_system_event_lock);
int event_is_open = 0;
}
static const struct file_operations acpi_system_event_ops = {
+ .owner = THIS_MODULE,
.open = acpi_system_open_event,
.read = acpi_system_read_event,
.release = acpi_system_close_event,
.poll = acpi_system_poll_event,
};
+#endif /* CONFIG_ACPI_PROC_EVENT */
+
+/* ACPI notifier chain */
+static BLOCKING_NOTIFIER_HEAD(acpi_chain_head);
+
+int acpi_notifier_call_chain(struct acpi_device *dev, u32 type, u32 data)
+{
+ struct acpi_bus_event event;
+
+ strcpy(event.device_class, dev->pnp.device_class);
+ strcpy(event.bus_id, dev->pnp.bus_id);
+ event.type = type;
+ event.data = data;
+ return (blocking_notifier_call_chain(&acpi_chain_head, 0, (void *)&event)
+ == NOTIFY_BAD) ? -EINVAL : 0;
+}
+EXPORT_SYMBOL(acpi_notifier_call_chain);
+
+int register_acpi_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&acpi_chain_head, nb);
+}
+EXPORT_SYMBOL(register_acpi_notifier);
+
+int unregister_acpi_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_unregister(&acpi_chain_head, nb);
+}
+EXPORT_SYMBOL(unregister_acpi_notifier);
#ifdef CONFIG_NET
-unsigned int acpi_event_seqnum;
+static unsigned int acpi_event_seqnum;
struct acpi_genl_event {
acpi_device_class device_class;
char bus_id[15];
.name = ACPI_GENL_MCAST_GROUP_NAME,
};
-int acpi_bus_generate_genetlink_event(struct acpi_device *device,
+int acpi_bus_generate_netlink_event(const char *device_class,
+ const char *bus_id,
u8 type, int data)
{
struct sk_buff *skb;
memset(event, 0, sizeof(struct acpi_genl_event));
- strcpy(event->device_class, device->pnp.device_class);
- strcpy(event->bus_id, device->dev.bus_id);
+ strcpy(event->device_class, device_class);
+ strcpy(event->bus_id, bus_id);
event->type = type;
event->data = data;
return result;
}
- result =
- genlmsg_multicast(skb, 0, acpi_event_mcgrp.id, GFP_ATOMIC);
- if (result)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Failed to send a Genetlink message!\n"));
+ genlmsg_multicast(skb, 0, acpi_event_mcgrp.id, GFP_ATOMIC);
return 0;
}
+EXPORT_SYMBOL(acpi_bus_generate_netlink_event);
+
static int acpi_event_genetlink_init(void)
{
int result;
}
#else
-int acpi_bus_generate_genetlink_event(struct acpi_device *device, u8 type,
- int data)
+int acpi_bus_generate_netlink_event(const char *device_class,
+ const char *bus_id,
+ u8 type, int data)
{
return 0;
}
+EXPORT_SYMBOL(acpi_bus_generate_netlink_event);
+
static int acpi_event_genetlink_init(void)
{
return -ENODEV;
static int __init acpi_event_init(void)
{
+#ifdef CONFIG_ACPI_PROC_EVENT
struct proc_dir_entry *entry;
+#endif
int error = 0;
if (acpi_disabled)
printk(KERN_WARNING PREFIX
"Failed to create genetlink family for ACPI event\n");
+#ifdef CONFIG_ACPI_PROC_EVENT
/* 'event' [R] */
- entry = create_proc_entry("event", S_IRUSR, acpi_root_dir);
- if (entry)
- entry->proc_fops = &acpi_system_event_ops;
- else
+ entry = proc_create("event", S_IRUSR, acpi_root_dir,
+ &acpi_system_event_ops);
+ if (!entry)
return -ENODEV;
+#endif
return 0;
}