diff options
Diffstat (limited to 'drivers/acpi/sbs.c')
| -rw-r--r-- | drivers/acpi/sbs.c | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index aae65e8f70f3..90fd09c65f95 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -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) { |