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ACPI: Battery: add sysfs alarm

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Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexey Starikovskiy 2007-09-26 19:43:11 +04:00 committed by Len Brown
parent d738096575
commit 3e58ea0d31
1 changed files with 32 additions and 1 deletions
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33
drivers/acpi/battery.c
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@ -687,6 +687,34 @@ static void acpi_battery_remove_fs(struct acpi_device *device)
}
#endif
static ssize_t acpi_battery_alarm_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
return sprintf(buf, "%d\n", battery->alarm * 1000);
}
static ssize_t acpi_battery_alarm_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long x;
struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
if (sscanf(buf, "%ld\n", &x) == 1)
battery->alarm = x/1000;
if (acpi_battery_present(battery))
acpi_battery_set_alarm(battery);
return count;
}
static struct device_attribute alarm_attr = {
.attr = {.name = "alarm", .mode = 0644, .owner = THIS_MODULE},
.show = acpi_battery_alarm_show,
.store = acpi_battery_alarm_store,
};
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
@ -732,6 +760,7 @@ static int acpi_battery_add(struct acpi_device *device)
battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
battery->bat.get_property = acpi_battery_get_property;
result = power_supply_register(&battery->device->dev, &battery->bat);
result = device_create_file(battery->bat.dev, &alarm_attr);
status = acpi_install_notify_handler(device->handle,
ACPI_ALL_NOTIFY,
acpi_battery_notify, battery);
@ -767,8 +796,10 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
#ifdef CONFIG_ACPI_PROCFS
acpi_battery_remove_fs(device);
#endif
if (battery->bat.dev)
if (battery->bat.dev) {
device_remove_file(battery->bat.dev, &alarm_attr);
power_supply_unregister(&battery->bat);
}
mutex_destroy(&battery->lock);
kfree(battery);
return 0;