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ACPI: Battery: Add support for _BIX extended info method

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Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexey Starikovskiy 2009-10-15 14:31:44 +04:00 committed by Len Brown
parent 16698857fb
commit c67fcd670b
1 changed files with 58 additions and 10 deletions
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60
drivers/acpi/battery.c
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@ -54,6 +54,7 @@
#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
@ -90,8 +91,10 @@ MODULE_DEVICE_TABLE(acpi, battery_device_ids);
enum {
ACPI_BATTERY_ALARM_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_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,
};
@ -112,6 +115,12 @@ struct acpi_battery {
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;
@ -200,6 +209,9 @@ static int acpi_battery_get_property(struct power_supply *psy,
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;
@ -241,6 +253,7 @@ static enum power_supply_property charge_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,
@ -256,6 +269,7 @@ 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,
@ -307,6 +321,28 @@ static struct acpi_offsets info_offsets[] = {
{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)
@ -352,20 +388,27 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
{
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",
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;
}
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);
@ -414,7 +457,7 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery)
union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
if (!acpi_battery_present(battery)||
if (!acpi_battery_present(battery) ||
!test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags))
return -ENODEV;
@ -592,6 +635,7 @@ static int acpi_battery_print_info(struct seq_file *seq, int result)
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));
@ -843,6 +887,7 @@ static int acpi_battery_add(struct acpi_device *device)
{
int result = 0;
struct acpi_battery *battery = NULL;
acpi_handle handle;
if (!device)
return -EINVAL;
battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
@ -853,6 +898,9 @@ static int acpi_battery_add(struct acpi_device *device)
strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
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);