#include <linux/init.h>
#include <linux/types.h>
#include <linux/jiffies.h>
+#include <linux/async.h>
+#include <linux/dmi.h>
+#include <linux/slab.h>
#ifdef CONFIG_ACPI_PROCFS_POWER
#include <linux/proc_fs.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
+#ifdef CONFIG_ACPI_SYSFS_POWER
#include <linux/power_supply.h>
+#endif
+
+#define PREFIX "ACPI: "
#define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF
-#define ACPI_BATTERY_COMPONENT 0x00040000
#define ACPI_BATTERY_CLASS "battery"
#define ACPI_BATTERY_DEVICE_NAME "Battery"
#define ACPI_BATTERY_NOTIFY_STATUS 0x80
#define ACPI_BATTERY_NOTIFY_INFO 0x81
+#define ACPI_BATTERY_NOTIFY_THRESHOLD 0x82
#define _COMPONENT ACPI_BATTERY_COMPONENT
MODULE_DEVICE_TABLE(acpi, battery_device_ids);
+enum {
+ ACPI_BATTERY_ALARM_PRESENT,
+ ACPI_BATTERY_XINFO_PRESENT,
+ /* For buggy DSDTs that report negative 16-bit values for either
+ * charging or discharging current and/or report 0 as 65536
+ * due to bad math.
+ */
+ ACPI_BATTERY_QUIRK_SIGNED16_CURRENT,
+};
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;
+ int rate_now;
int capacity_now;
int voltage_now;
int design_capacity;
int design_voltage;
int design_capacity_warning;
int design_capacity_low;
+ int cycle_count;
+ int measurement_accuracy;
+ int max_sampling_time;
+ int min_sampling_time;
+ int max_averaging_interval;
+ int min_averaging_interval;
int capacity_granularity_1;
int capacity_granularity_2;
int alarm;
char oem_info[32];
int state;
int power_unit;
- u8 alarm_present;
+ unsigned long flags;
};
#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
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))
return POWER_SUPPLY_TECHNOLOGY_NiMH;
if (!strcasecmp("LION", battery->type))
return POWER_SUPPLY_TECHNOLOGY_LION;
- if (!strcasecmp("LI-ION", battery->type))
+ if (!strncasecmp("LI-ION", battery->type, 6))
return POWER_SUPPLY_TECHNOLOGY_LION;
if (!strcasecmp("LiP", battery->type))
return POWER_SUPPLY_TECHNOLOGY_LIPO;
static int acpi_battery_get_state(struct acpi_battery *battery);
+static int acpi_battery_is_charged(struct acpi_battery *battery)
+{
+ /* either charging or discharging */
+ if (battery->state != 0)
+ return 0;
+
+ /* battery not reporting charge */
+ if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN ||
+ battery->capacity_now == 0)
+ return 0;
+
+ /* good batteries update full_charge as the batteries degrade */
+ if (battery->full_charge_capacity == battery->capacity_now)
+ return 1;
+
+ /* fallback to using design values for broken batteries */
+ if (battery->design_capacity == battery->capacity_now)
+ return 1;
+
+ /* we don't do any sort of metric based on percentages */
+ return 0;
+}
+
static int acpi_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
else if (battery->state & 0x02)
val->intval = POWER_SUPPLY_STATUS_CHARGING;
- else if (battery->state == 0)
+ else if (acpi_battery_is_charged(battery))
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = acpi_battery_technology(battery);
break;
+ case POWER_SUPPLY_PROP_CYCLE_COUNT:
+ val->intval = battery->cycle_count;
+ break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = battery->design_voltage * 1000;
break;
val->intval = battery->voltage_now * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
- val->intval = battery->current_now * 1000;
+ case POWER_SUPPLY_PROP_POWER_NOW:
+ val->intval = battery->rate_now * 1000;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
case POWER_SUPPLY_PROP_MANUFACTURER:
val->strval = battery->oem_info;
break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ val->strval = battery->serial_number;
+ break;
default:
return -EINVAL;
}
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CHARGE_NOW,
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
};
static enum power_supply_property energy_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_POWER_NOW,
POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
POWER_SUPPLY_PROP_ENERGY_FULL,
POWER_SUPPLY_PROP_ENERGY_NOW,
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
};
+#endif
#ifdef CONFIG_ACPI_PROCFS_POWER
inline char *acpi_battery_units(struct acpi_battery *battery)
static struct acpi_offsets state_offsets[] = {
{offsetof(struct acpi_battery, state), 0},
- {offsetof(struct acpi_battery, current_now), 0},
+ {offsetof(struct acpi_battery, rate_now), 0},
{offsetof(struct acpi_battery, capacity_now), 0},
{offsetof(struct acpi_battery, voltage_now), 0},
};
{offsetof(struct acpi_battery, oem_info), 1},
};
+static struct acpi_offsets extended_info_offsets[] = {
+ {offsetof(struct acpi_battery, power_unit), 0},
+ {offsetof(struct acpi_battery, design_capacity), 0},
+ {offsetof(struct acpi_battery, full_charge_capacity), 0},
+ {offsetof(struct acpi_battery, technology), 0},
+ {offsetof(struct acpi_battery, design_voltage), 0},
+ {offsetof(struct acpi_battery, design_capacity_warning), 0},
+ {offsetof(struct acpi_battery, design_capacity_low), 0},
+ {offsetof(struct acpi_battery, cycle_count), 0},
+ {offsetof(struct acpi_battery, measurement_accuracy), 0},
+ {offsetof(struct acpi_battery, max_sampling_time), 0},
+ {offsetof(struct acpi_battery, min_sampling_time), 0},
+ {offsetof(struct acpi_battery, max_averaging_interval), 0},
+ {offsetof(struct acpi_battery, min_averaging_interval), 0},
+ {offsetof(struct acpi_battery, capacity_granularity_1), 0},
+ {offsetof(struct acpi_battery, capacity_granularity_2), 0},
+ {offsetof(struct acpi_battery, model_number), 1},
+ {offsetof(struct acpi_battery, serial_number), 1},
+ {offsetof(struct acpi_battery, type), 1},
+ {offsetof(struct acpi_battery, oem_info), 1},
+};
+
static int extract_package(struct acpi_battery *battery,
union acpi_object *package,
struct acpi_offsets *offsets, int num)
strncpy(ptr, element->string.pointer, 32);
else if (element->type == ACPI_TYPE_INTEGER) {
strncpy(ptr, (u8 *)&element->integer.value,
- sizeof(acpi_integer));
- ptr[sizeof(acpi_integer)] = 0;
- } else return -EFAULT;
+ sizeof(u64));
+ ptr[sizeof(u64)] = 0;
+ } else
+ *ptr = 0; /* don't have value */
} else {
- if (element->type == ACPI_TYPE_INTEGER) {
- int *x = (int *)((u8 *)battery +
- offsets[i].offset);
- *x = element->integer.value;
- } else return -EFAULT;
+ int *x = (int *)((u8 *)battery + offsets[i].offset);
+ *x = (element->type == ACPI_TYPE_INTEGER) ?
+ element->integer.value : -1;
}
}
return 0;
{
int result = -EFAULT;
acpi_status status = 0;
+ char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags)?
+ "_BIX" : "_BIF";
+
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
if (!acpi_battery_present(battery))
return 0;
mutex_lock(&battery->lock);
- status = acpi_evaluate_object(battery->device->handle, "_BIF",
- NULL, &buffer);
+ status = acpi_evaluate_object(battery->device->handle, name,
+ NULL, &buffer);
mutex_unlock(&battery->lock);
if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
+ ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", name));
return -ENODEV;
}
-
- result = extract_package(battery, buffer.pointer,
- info_offsets, ARRAY_SIZE(info_offsets));
+ if (test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags))
+ result = extract_package(battery, buffer.pointer,
+ extended_info_offsets,
+ ARRAY_SIZE(extended_info_offsets));
+ else
+ result = extract_package(battery, buffer.pointer,
+ info_offsets, ARRAY_SIZE(info_offsets));
kfree(buffer.pointer);
return result;
}
state_offsets, ARRAY_SIZE(state_offsets));
battery->update_time = jiffies;
kfree(buffer.pointer);
+
+ if (test_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags) &&
+ battery->rate_now != -1)
+ battery->rate_now = abs((s16)battery->rate_now);
+
return result;
}
union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
- if (!acpi_battery_present(battery)|| !battery->alarm_present)
+ if (!acpi_battery_present(battery) ||
+ !test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags))
return -ENODEV;
arg0.integer.value = battery->alarm;
/* See if alarms are supported, and if so, set default */
status = acpi_get_handle(battery->device->handle, "_BTP", &handle);
if (ACPI_FAILURE(status)) {
- battery->alarm_present = 0;
+ clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags);
return 0;
}
- battery->alarm_present = 1;
+ set_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags);
if (!battery->alarm)
battery->alarm = battery->design_capacity_warning;
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)
}
static struct device_attribute alarm_attr = {
- .attr = {.name = "alarm", .mode = 0644, .owner = THIS_MODULE},
+ .attr = {.name = "alarm", .mode = 0644},
.show = acpi_battery_alarm_show,
.store = acpi_battery_alarm_store,
};
{
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 =
power_supply_unregister(&battery->bat);
battery->bat.dev = NULL;
}
+#endif
+
+static void acpi_battery_quirks(struct acpi_battery *battery)
+{
+ if (dmi_name_in_vendors("Acer") && battery->power_unit) {
+ set_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags);
+ }
+}
static int acpi_battery_update(struct acpi_battery *battery)
{
- int result = acpi_battery_get_status(battery);
+ int result, old_present = acpi_battery_present(battery);
+ result = acpi_battery_get_status(battery);
if (result)
return result;
if (!acpi_battery_present(battery)) {
+#ifdef CONFIG_ACPI_SYSFS_POWER
sysfs_remove_battery(battery);
+#endif
+ battery->update_time = 0;
return 0;
}
+ if (!battery->update_time ||
+ old_present != acpi_battery_present(battery)) {
+ result = acpi_battery_get_info(battery);
+ if (result)
+ return result;
+ acpi_battery_quirks(battery);
+ 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);
}
seq_printf(seq, "design capacity low: %d %sh\n",
battery->design_capacity_low,
acpi_battery_units(battery));
+ seq_printf(seq, "cycle count: %i\n", battery->cycle_count);
seq_printf(seq, "capacity granularity 1: %d %sh\n",
battery->capacity_granularity_1,
acpi_battery_units(battery));
else
seq_printf(seq, "charging state: charged\n");
- if (battery->current_now == ACPI_BATTERY_VALUE_UNKNOWN)
+ if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "present rate: unknown\n");
else
seq_printf(seq, "present rate: %d %s\n",
- battery->current_now, acpi_battery_units(battery));
+ battery->rate_now, acpi_battery_units(battery));
if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "remaining capacity: unknown\n");
static struct battery_file {
struct file_operations ops;
mode_t mode;
- char *name;
+ const char *name;
} acpi_battery_file[] = {
FILE_DESCRIPTION_RO(info),
FILE_DESCRIPTION_RO(state),
acpi_battery_dir);
if (!acpi_device_dir(device))
return -ENODEV;
- acpi_device_dir(device)->owner = THIS_MODULE;
}
for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) {
- entry = create_proc_entry(acpi_battery_file[i].name,
- acpi_battery_file[i].mode, acpi_device_dir(device));
+ entry = proc_create_data(acpi_battery_file[i].name,
+ acpi_battery_file[i].mode,
+ acpi_device_dir(device),
+ &acpi_battery_file[i].ops,
+ acpi_driver_data(device));
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_battery_file[i].ops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
}
return 0;
}
Driver Interface
-------------------------------------------------------------------------- */
-static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_battery_notify(struct acpi_device *device, u32 event)
{
- struct acpi_battery *battery = data;
- struct acpi_device *device;
+ struct acpi_battery *battery = acpi_driver_data(device);
+
if (!battery)
return;
- device = battery->device;
acpi_battery_update(battery);
acpi_bus_generate_proc_event(device, event,
acpi_battery_present(battery));
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event,
+ dev_name(&device->dev), event,
acpi_battery_present(battery));
- /* acpi_batter_update could remove power_supply object */
+#ifdef CONFIG_ACPI_SYSFS_POWER
+ /* acpi_battery_update could remove power_supply object */
if (battery->bat.dev)
- kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE);
+ power_supply_changed(&battery->bat);
+#endif
}
static int acpi_battery_add(struct acpi_device *device)
{
int result = 0;
- acpi_status status = 0;
struct acpi_battery *battery = NULL;
+ acpi_handle handle;
if (!device)
return -EINVAL;
battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
battery->device = device;
strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
- acpi_driver_data(device) = battery;
+ device->driver_data = battery;
mutex_init(&battery->lock);
+ if (ACPI_SUCCESS(acpi_get_handle(battery->device->handle,
+ "_BIX", &handle)))
+ set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags);
acpi_battery_update(battery);
#ifdef CONFIG_ACPI_PROCFS_POWER
result = acpi_battery_add_fs(device);
- if (result)
- goto end;
#endif
- status = acpi_install_notify_handler(device->handle,
- ACPI_ALL_NOTIFY,
- acpi_battery_notify, battery);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler"));
- result = -ENODEV;
- goto end;
- }
- printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
- ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
- device->status.battery_present ? "present" : "absent");
- end:
- if (result) {
+ if (!result) {
+ printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
+ ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
+ device->status.battery_present ? "present" : "absent");
+ } else {
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_battery_remove_fs(device);
#endif
static int acpi_battery_remove(struct acpi_device *device, int type)
{
- acpi_status status = 0;
struct acpi_battery *battery = NULL;
if (!device || !acpi_driver_data(device))
return -EINVAL;
battery = acpi_driver_data(device);
- status = acpi_remove_notify_handler(device->handle,
- ACPI_ALL_NOTIFY,
- acpi_battery_notify);
#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;
.name = "battery",
.class = ACPI_BATTERY_CLASS,
.ids = battery_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = acpi_battery_add,
.resume = acpi_battery_resume,
.remove = acpi_battery_remove,
+ .notify = acpi_battery_notify,
},
};
-static int __init acpi_battery_init(void)
+static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie)
{
if (acpi_disabled)
- return -ENODEV;
+ return;
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_battery_dir = acpi_lock_battery_dir();
if (!acpi_battery_dir)
- return -ENODEV;
+ return;
#endif
if (acpi_bus_register_driver(&acpi_battery_driver) < 0) {
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_unlock_battery_dir(acpi_battery_dir);
#endif
- return -ENODEV;
+ return;
}
+ return;
+}
+
+static int __init acpi_battery_init(void)
+{
+ async_schedule(acpi_battery_init_async, NULL);
return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff