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path: root/drivers/power/ds2760_battery.c
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Diffstat (limited to 'drivers/power/ds2760_battery.c')
-rw-r--r--drivers/power/ds2760_battery.c42
1 files changed, 33 insertions, 9 deletions
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index a52d4a11652d..520b5c49ff30 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -62,6 +62,10 @@ static unsigned int cache_time = 1000;
module_param(cache_time, uint, 0644);
MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
+static unsigned int pmod_enabled;
+module_param(pmod_enabled, bool, 0644);
+MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
+
/* Some batteries have their rated capacity stored a N * 10 mAh, while
* others use an index into this table. */
static int rated_capacities[] = {
@@ -259,6 +263,17 @@ static void ds2760_battery_update_status(struct ds2760_device_info *di)
power_supply_changed(&di->bat);
}
+static void ds2760_battery_write_status(struct ds2760_device_info *di,
+ char status)
+{
+ if (status == di->raw[DS2760_STATUS_REG])
+ return;
+
+ w1_ds2760_write(di->w1_dev, &status, DS2760_STATUS_WRITE_REG, 1);
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+}
+
static void ds2760_battery_work(struct work_struct *work)
{
struct ds2760_device_info *di = container_of(work,
@@ -342,9 +357,9 @@ static enum power_supply_property ds2760_battery_props[] = {
static int ds2760_battery_probe(struct platform_device *pdev)
{
+ char status;
int retval = 0;
struct ds2760_device_info *di;
- struct ds2760_platform_data *pdata;
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di) {
@@ -354,14 +369,13 @@ static int ds2760_battery_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, di);
- pdata = pdev->dev.platform_data;
- di->dev = &pdev->dev;
- di->w1_dev = pdev->dev.parent;
- di->bat.name = dev_name(&pdev->dev);
- di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
- di->bat.properties = ds2760_battery_props;
- di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
- di->bat.get_property = ds2760_battery_get_property;
+ di->dev = &pdev->dev;
+ di->w1_dev = pdev->dev.parent;
+ di->bat.name = dev_name(&pdev->dev);
+ di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+ di->bat.properties = ds2760_battery_props;
+ di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
+ di->bat.get_property = ds2760_battery_get_property;
di->bat.external_power_changed =
ds2760_battery_external_power_changed;
@@ -373,6 +387,16 @@ static int ds2760_battery_probe(struct platform_device *pdev)
goto batt_failed;
}
+ /* enable sleep mode feature */
+ ds2760_battery_read_status(di);
+ status = di->raw[DS2760_STATUS_REG];
+ if (pmod_enabled)
+ status |= DS2760_STATUS_PMOD;
+ else
+ status &= ~DS2760_STATUS_PMOD;
+
+ ds2760_battery_write_status(di, status);
+
INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
if (!di->monitor_wqueue) {