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authorAlexey Starikovskiy <astarikovskiy@suse.de>2008-01-01 22:27:24 +0300
committerLen Brown <len.brown@intel.com>2008-01-01 22:27:24 +0300
commit97749cd9adbb2985e4b2aee1a59d6b970fe9c3a7 (patch)
tree22e32a16eb78178e4f50963e4f61320b8bf935ab /drivers/acpi/battery.c
parente697789d64f8748cb219d7f5c413c512953802cc (diff)
downloadlinux-97749cd9adbb2985e4b2aee1a59d6b970fe9c3a7.tar.xz
ACPI: Make sysfs interface in ACPI power optional.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9494 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/battery.c')
-rw-r--r--drivers/acpi/battery.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 8f7505d304b5..c4a769d1ba85 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -40,7 +40,9 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
+#ifdef CONFIG_ACPI_SYSFS_POWER
#include <linux/power_supply.h>
+#endif
#define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF
@@ -86,7 +88,9 @@ MODULE_DEVICE_TABLE(acpi, battery_device_ids);
struct acpi_battery {
struct mutex lock;
+#ifdef CONFIG_ACPI_SYSFS_POWER
struct power_supply bat;
+#endif
struct acpi_device *device;
unsigned long update_time;
int current_now;
@@ -117,6 +121,7 @@ inline int acpi_battery_present(struct acpi_battery *battery)
return battery->device->status.battery_present;
}
+#ifdef CONFIG_ACPI_SYSFS_POWER
static int acpi_battery_technology(struct acpi_battery *battery)
{
if (!strcasecmp("NiCd", battery->type))
@@ -222,6 +227,7 @@ static enum power_supply_property energy_battery_props[] = {
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
};
+#endif
#ifdef CONFIG_ACPI_PROCFS_POWER
inline char *acpi_battery_units(struct acpi_battery *battery)
@@ -398,6 +404,7 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
return acpi_battery_set_alarm(battery);
}
+#ifdef CONFIG_ACPI_SYSFS_POWER
static ssize_t acpi_battery_alarm_show(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -429,11 +436,6 @@ static int sysfs_add_battery(struct acpi_battery *battery)
{
int result;
- battery->update_time = 0;
- result = acpi_battery_get_info(battery);
- acpi_battery_init_alarm(battery);
- if (result)
- return result;
if (battery->power_unit) {
battery->bat.properties = charge_battery_props;
battery->bat.num_properties =
@@ -462,18 +464,31 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
power_supply_unregister(&battery->bat);
battery->bat.dev = NULL;
}
+#endif
static int acpi_battery_update(struct acpi_battery *battery)
{
- int result = acpi_battery_get_status(battery);
+ int result;
+ result = acpi_battery_get_status(battery);
if (result)
return result;
+#ifdef CONFIG_ACPI_SYSFS_POWER
if (!acpi_battery_present(battery)) {
sysfs_remove_battery(battery);
+ battery->update_time = 0;
return 0;
}
+#endif
+ if (!battery->update_time) {
+ result = acpi_battery_get_info(battery);
+ if (result)
+ return result;
+ acpi_battery_init_alarm(battery);
+ }
+#ifdef CONFIG_ACPI_SYSFS_POWER
if (!battery->bat.dev)
sysfs_add_battery(battery);
+#endif
return acpi_battery_get_state(battery);
}
@@ -767,9 +782,11 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
acpi_bus_generate_netlink_event(device->pnp.device_class,
device->dev.bus_id, event,
acpi_battery_present(battery));
+#ifdef CONFIG_ACPI_SYSFS_POWER
/* acpi_batter_update could remove power_supply object */
if (battery->bat.dev)
kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE);
+#endif
}
static int acpi_battery_add(struct acpi_device *device)
@@ -828,7 +845,9 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_battery_remove_fs(device);
#endif
+#ifdef CONFIG_ACPI_SYSFS_POWER
sysfs_remove_battery(battery);
+#endif
mutex_destroy(&battery->lock);
kfree(battery);
return 0;