From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Refer to Documentation/power_supply_class.txt for interface description.
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Len Brown <[EMAIL PROTECTED]>
---
drivers/acpi/ac.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 47 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 26d7070..a08ecbb 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -29,6 +29,12 @@
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+
+#if defined(CONFIG_POWER_SUPPLY) || defined(CONFIG_POWER_SUPPLY_MODULE)
+#define ENABLE_POWER_SUPPLY
+#include <linux/power_supply.h>
+#endif
+
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
@@ -72,16 +78,42 @@ static struct acpi_driver acpi_ac_driver = {
};
struct acpi_ac {
+#ifdef ENABLE_POWER_SUPPLY
+ struct power_supply charger;
+#endif
struct acpi_device * device;
unsigned long state;
};
+#define to_acpi_ac(x) container_of(x, struct acpi_ac, charger);
+
static const struct file_operations acpi_ac_fops = {
.open = acpi_ac_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
+#ifdef ENABLE_POWER_SUPPLY
+static int get_ac_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct acpi_ac *ac = to_acpi_ac(psy);
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = ac->state;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+#endif
/* --------------------------------------------------------------------------
AC Adapter Management
@@ -208,6 +240,9 @@ static void acpi_ac_notify(acpi_handle handle, u32 event,
void *data)
acpi_bus_generate_netlink_event(device->pnp.device_class,
device->dev.bus_id, event,
(u32) ac->state);
+#ifdef ENABLE_POWER_SUPPLY
+ kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
+#endif
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -244,7 +279,14 @@ static int acpi_ac_add(struct acpi_device *device)
result = acpi_ac_add_fs(device);
if (result)
goto end;
-
+#ifdef ENABLE_POWER_SUPPLY
+ ac->charger.name = acpi_device_bid(device);
+ ac->charger.type = POWER_SUPPLY_TYPE_MAINS;
+ ac->charger.properties = ac_props;
+ ac->charger.num_properties = ARRAY_SIZE(ac_props);
+ ac->charger.get_property = get_ac_property;
+ power_supply_register(&ac->device->dev, &ac->charger);
+#endif
status = acpi_install_notify_handler(device->handle,
ACPI_ALL_NOTIFY, acpi_ac_notify,
ac);
@@ -279,7 +321,10 @@ static int acpi_ac_remove(struct acpi_device *device, int
type)
status = acpi_remove_notify_handler(device->handle,
ACPI_ALL_NOTIFY, acpi_ac_notify);
-
+#ifdef ENABLE_POWER_SUPPLY
+ if (ac->charger.dev)
+ power_supply_unregister(&ac->charger);
+#endif
acpi_ac_remove_fs(device);
kfree(ac);
--
1.5.3.1.27.g57543
-
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
