ACPI: SBS: Add sysfs alarm
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index aae65e8..90fd09c 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -386,8 +386,6 @@
return result;
}
-#ifdef CONFIG_ACPI_PROCFS
-
static int acpi_battery_get_alarm(struct acpi_battery *battery)
{
return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
@@ -424,8 +422,6 @@
return ret;
}
-#endif
-
static int acpi_ac_get_present(struct acpi_sbs *sbs)
{
int result;
@@ -438,6 +434,36 @@
return result;
}
+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));
+ acpi_battery_get_alarm(battery);
+ return sprintf(buf, "%d\n", battery->alarm_capacity *
+ acpi_battery_scale(battery) * 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_capacity = x /
+ (1000 * acpi_battery_scale(battery));
+ if (battery->present)
+ 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,
+};
+
/* --------------------------------------------------------------------------
FS Interface (/proc/acpi)
-------------------------------------------------------------------------- */
@@ -782,6 +808,7 @@
}
battery->bat.get_property = acpi_sbs_battery_get_property;
result = power_supply_register(&sbs->device->dev, &battery->bat);
+ device_create_file(battery->bat.dev, &alarm_attr);
printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
battery->name, sbs->battery->present ? "present" : "absent");
@@ -791,6 +818,7 @@
static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
{
if (sbs->battery[id].bat.dev)
+ device_remove_file(sbs->battery[id].bat.dev, &alarm_attr);
power_supply_unregister(&sbs->battery[id].bat);
#ifdef CONFIG_ACPI_PROCFS
if (sbs->battery[id].proc_entry) {
