dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

ACPI: Battery: Add bit flags 

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 14:31:24 +04:00 committed by Len Brown
parent 61c39bb354
commit 7b3bcc4a1a
1 changed files with 14 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/acpi/battery.c
View File

@ -88,10 +88,13 @@ static const struct acpi_device_id battery_device_ids[] = {
MODULE_DEVICE_TABLE(acpi, battery_device_ids);
/* 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.
*/
#define QUIRK_SIGNED16_CURRENT 0x0001
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_QUIRK_SIGNED16_CURRENT,
};
struct acpi_battery {
struct mutex lock;
@ -118,8 +121,7 @@ struct acpi_battery {
char oem_info[32];
int state;
int power_unit;
u8 alarm_present;
long quirks;
unsigned long flags;
};
#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
@ -399,7 +401,7 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
battery->update_time = jiffies;
kfree(buffer.pointer);
if ((battery->quirks & QUIRK_SIGNED16_CURRENT) &&
if (test_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags) &&
battery->rate_now != -1)
battery->rate_now = abs((s16)battery->rate_now);
@ -412,7 +414,8 @@ 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)|| !battery->alarm_present)
if (!acpi_battery_present(battery)||
!test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags))
return -ENODEV;
arg0.integer.value = battery->alarm;
@ -437,10 +440,10 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
/* 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);
@ -510,9 +513,8 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
static void acpi_battery_quirks(struct acpi_battery *battery)
{
battery->quirks = 0;
if (dmi_name_in_vendors("Acer") && battery->power_unit) {
battery->quirks |= QUIRK_SIGNED16_CURRENT;
set_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags);
}
}