#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/types.h>
+#ifdef CONFIG_ACPI_PROCFS_POWER
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#endif
+#ifdef CONFIG_ACPI_SYSFS_POWER
+#include <linux/power_supply.h>
+#endif
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_AC_COMPONENT 0x00020000
+#define PREFIX "ACPI: "
+
#define ACPI_AC_CLASS "ac_adapter"
-#define ACPI_AC_HID "ACPI0003"
-#define ACPI_AC_DRIVER_NAME "ACPI AC Adapter Driver"
#define ACPI_AC_DEVICE_NAME "AC Adapter"
#define ACPI_AC_FILE_STATE "state"
#define ACPI_AC_NOTIFY_STATUS 0x80
#define ACPI_AC_STATUS_UNKNOWN 0xFF
#define _COMPONENT ACPI_AC_COMPONENT
-ACPI_MODULE_NAME("acpi_ac")
+ACPI_MODULE_NAME("ac");
- MODULE_AUTHOR("Paul Diefenbaugh");
-MODULE_DESCRIPTION(ACPI_AC_DRIVER_NAME);
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION("ACPI AC Adapter Driver");
MODULE_LICENSE("GPL");
+#ifdef CONFIG_ACPI_PROCFS_POWER
+extern struct proc_dir_entry *acpi_lock_ac_dir(void);
+extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
+static int acpi_ac_open_fs(struct inode *inode, struct file *file);
+#endif
+
static int acpi_ac_add(struct acpi_device *device);
static int acpi_ac_remove(struct acpi_device *device, int type);
-static int acpi_ac_open_fs(struct inode *inode, struct file *file);
+static int acpi_ac_resume(struct acpi_device *device);
+static void acpi_ac_notify(struct acpi_device *device, u32 event);
+
+static const struct acpi_device_id ac_device_ids[] = {
+ {"ACPI0003", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, ac_device_ids);
static struct acpi_driver acpi_ac_driver = {
- .name = ACPI_AC_DRIVER_NAME,
+ .name = "ac",
.class = ACPI_AC_CLASS,
- .ids = ACPI_AC_HID,
+ .ids = ac_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = acpi_ac_add,
.remove = acpi_ac_remove,
+ .resume = acpi_ac_resume,
+ .notify = acpi_ac_notify,
},
};
struct acpi_ac {
- acpi_handle handle;
- unsigned long state;
+#ifdef CONFIG_ACPI_SYSFS_POWER
+ struct power_supply charger;
+#endif
+ struct acpi_device * device;
+ unsigned long long state;
};
-static struct file_operations acpi_ac_fops = {
+#define to_acpi_ac(x) container_of(x, struct acpi_ac, charger);
+
+#ifdef CONFIG_ACPI_PROCFS_POWER
+static const struct file_operations acpi_ac_fops = {
+ .owner = THIS_MODULE,
.open = acpi_ac_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
+#endif
+#ifdef CONFIG_ACPI_SYSFS_POWER
+static int get_ac_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct acpi_ac *ac = to_acpi_ac(psy);
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = ac->state;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+static enum power_supply_property ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+#endif
/* --------------------------------------------------------------------------
AC Adapter Management
-------------------------------------------------------------------------- */
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("acpi_ac_get_state");
if (!ac)
- return_VALUE(-EINVAL);
+ return -EINVAL;
- status = acpi_evaluate_integer(ac->handle, "_PSR", NULL, &ac->state);
+ status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL, &ac->state);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error reading AC Adapter state\n"));
+ ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state"));
ac->state = ACPI_AC_STATUS_UNKNOWN;
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
+#ifdef CONFIG_ACPI_PROCFS_POWER
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
static int acpi_ac_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_ac *ac = (struct acpi_ac *)seq->private;
+ struct acpi_ac *ac = seq->private;
- ACPI_FUNCTION_TRACE("acpi_ac_seq_show");
if (!ac)
- return_VALUE(0);
+ return 0;
if (acpi_ac_get_state(ac)) {
seq_puts(seq, "ERROR: Unable to read AC Adapter state\n");
- return_VALUE(0);
+ return 0;
}
seq_puts(seq, "state: ");
break;
}
- return_VALUE(0);
+ return 0;
}
static int acpi_ac_open_fs(struct inode *inode, struct file *file)
{
struct proc_dir_entry *entry = NULL;
- ACPI_FUNCTION_TRACE("acpi_ac_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_ac_dir);
if (!acpi_device_dir(device))
- return_VALUE(-ENODEV);
- acpi_device_dir(device)->owner = THIS_MODULE;
+ return -ENODEV;
}
/* 'state' [R] */
- entry = create_proc_entry(ACPI_AC_FILE_STATE,
- S_IRUGO, acpi_device_dir(device));
+ entry = proc_create_data(ACPI_AC_FILE_STATE,
+ S_IRUGO, acpi_device_dir(device),
+ &acpi_ac_fops, acpi_driver_data(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_AC_FILE_STATE));
- else {
- entry->proc_fops = &acpi_ac_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
-
- return_VALUE(0);
+ return -ENODEV;
+ return 0;
}
static int acpi_ac_remove_fs(struct acpi_device *device)
{
- ACPI_FUNCTION_TRACE("acpi_ac_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_AC_FILE_STATE, acpi_device_dir(device));
acpi_device_dir(device) = NULL;
}
- return_VALUE(0);
+ return 0;
}
+#endif
/* --------------------------------------------------------------------------
Driver Model
-------------------------------------------------------------------------- */
-static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_ac_notify(struct acpi_device *device, u32 event)
{
- struct acpi_ac *ac = (struct acpi_ac *)data;
- struct acpi_device *device = NULL;
+ struct acpi_ac *ac = acpi_driver_data(device);
- ACPI_FUNCTION_TRACE("acpi_ac_notify");
if (!ac)
- return_VOID;
-
- if (acpi_bus_get_device(ac->handle, &device))
- return_VOID;
+ return;
switch (event) {
- case ACPI_AC_NOTIFY_STATUS:
- acpi_ac_get_state(ac);
- acpi_bus_generate_event(device, event, (u32) ac->state);
- break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
- break;
+ case ACPI_AC_NOTIFY_STATUS:
+ case ACPI_NOTIFY_BUS_CHECK:
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ acpi_ac_get_state(ac);
+ acpi_bus_generate_proc_event(device, event, (u32) ac->state);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ dev_name(&device->dev), event,
+ (u32) ac->state);
+ acpi_notifier_call_chain(device, event, (u32) ac->state);
+#ifdef CONFIG_ACPI_SYSFS_POWER
+ kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
+#endif
}
- return_VOID;
+ return;
}
static int acpi_ac_add(struct acpi_device *device)
{
int result = 0;
- acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
- ACPI_FUNCTION_TRACE("acpi_ac_add");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
- ac = kmalloc(sizeof(struct acpi_ac), GFP_KERNEL);
+ ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
if (!ac)
- return_VALUE(-ENOMEM);
- memset(ac, 0, sizeof(struct acpi_ac));
+ return -ENOMEM;
- ac->handle = device->handle;
+ ac->device = device;
strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_AC_CLASS);
- acpi_driver_data(device) = ac;
+ device->driver_data = ac;
result = acpi_ac_get_state(ac);
if (result)
goto end;
+#ifdef CONFIG_ACPI_PROCFS_POWER
result = acpi_ac_add_fs(device);
+#endif
if (result)
goto end;
-
- status = acpi_install_notify_handler(ac->handle,
- ACPI_DEVICE_NOTIFY, acpi_ac_notify,
- ac);
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error installing notify handler\n"));
- result = -ENODEV;
- goto end;
- }
+#ifdef CONFIG_ACPI_SYSFS_POWER
+ ac->charger.name = acpi_device_bid(device);
+ ac->charger.type = POWER_SUPPLY_TYPE_MAINS;
+ ac->charger.properties = ac_props;
+ ac->charger.num_properties = ARRAY_SIZE(ac_props);
+ ac->charger.get_property = get_ac_property;
+ power_supply_register(&ac->device->dev, &ac->charger);
+#endif
printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
end:
if (result) {
+#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_ac_remove_fs(device);
+#endif
kfree(ac);
}
- return_VALUE(result);
+ return result;
+}
+
+static int acpi_ac_resume(struct acpi_device *device)
+{
+ struct acpi_ac *ac;
+ unsigned old_state;
+ if (!device || !acpi_driver_data(device))
+ return -EINVAL;
+ ac = acpi_driver_data(device);
+ old_state = ac->state;
+ if (acpi_ac_get_state(ac))
+ return 0;
+#ifdef CONFIG_ACPI_SYSFS_POWER
+ if (old_state != ac->state)
+ kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
+#endif
+ return 0;
}
static int acpi_ac_remove(struct acpi_device *device, int type)
{
- acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
- ACPI_FUNCTION_TRACE("acpi_ac_remove");
if (!device || !acpi_driver_data(device))
- return_VALUE(-EINVAL);
+ return -EINVAL;
- ac = (struct acpi_ac *)acpi_driver_data(device);
-
- status = acpi_remove_notify_handler(ac->handle,
- ACPI_DEVICE_NOTIFY, acpi_ac_notify);
- if (ACPI_FAILURE(status))
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error removing notify handler\n"));
+ ac = acpi_driver_data(device);
+#ifdef CONFIG_ACPI_SYSFS_POWER
+ if (ac->charger.dev)
+ power_supply_unregister(&ac->charger);
+#endif
+#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_ac_remove_fs(device);
+#endif
kfree(ac);
- return_VALUE(0);
+ return 0;
}
static int __init acpi_ac_init(void)
{
- int result = 0;
+ int result;
- ACPI_FUNCTION_TRACE("acpi_ac_init");
+ if (acpi_disabled)
+ return -ENODEV;
- acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir);
+#ifdef CONFIG_ACPI_PROCFS_POWER
+ acpi_ac_dir = acpi_lock_ac_dir();
if (!acpi_ac_dir)
- return_VALUE(-ENODEV);
- acpi_ac_dir->owner = THIS_MODULE;
+ return -ENODEV;
+#endif
result = acpi_bus_register_driver(&acpi_ac_driver);
if (result < 0) {
- remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
- return_VALUE(-ENODEV);
+#ifdef CONFIG_ACPI_PROCFS_POWER
+ acpi_unlock_ac_dir(acpi_ac_dir);
+#endif
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
static void __exit acpi_ac_exit(void)
{
- ACPI_FUNCTION_TRACE("acpi_ac_exit");
acpi_bus_unregister_driver(&acpi_ac_driver);
- remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
+#ifdef CONFIG_ACPI_PROCFS_POWER
+ acpi_unlock_ac_dir(acpi_ac_dir);
+#endif
- return_VOID;
+ return;
}
module_init(acpi_ac_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff