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ACPI: SBS: Add sysfs alarm 

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Alexey Starikovskiy 2007-09-26 19:44:00 +04:00 committed by Len Brown
parent 66e4b72bfa
commit 8bd9553206
1 changed files with 32 additions and 4 deletions
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36
drivers/acpi/sbs.c
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@ -386,8 +386,6 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
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 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery)
return ret;
}
#endif
static int acpi_ac_get_present(struct acpi_sbs *sbs)
{
int result;
@ -438,6 +434,36 @@ static int acpi_ac_get_present(struct acpi_sbs *sbs)
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 @@ static int acpi_battery_add(struct acpi_sbs *sbs, int id)
}
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 int acpi_battery_add(struct acpi_sbs *sbs, int id)
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) {