diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/battery.c | 68 |
1 files changed, 58 insertions, 10 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index b2b48f8545c7..1ca0ea77115b 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -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 @@ -90,9 +91,11 @@ 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) @@ -352,22 +388,29 @@ 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", - 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; } @@ -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); |