diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/ds2760_battery.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c index f439071c2aa..ed0ea5e275c 100644 --- a/drivers/power/ds2760_battery.c +++ b/drivers/power/ds2760_battery.c @@ -66,6 +66,10 @@ static unsigned int pmod_enabled; module_param(pmod_enabled, bool, 0644); MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit"); +static unsigned int rated_capacity; +module_param(rated_capacity, uint, 0644); +MODULE_PARM_DESC(rated_capacity, "rated battery capacity, 10*mAh or index"); + /* Some batteries have their rated capacity stored a N * 10 mAh, while * others use an index into this table. */ static int rated_capacities[] = { @@ -274,6 +278,17 @@ static void ds2760_battery_write_status(struct ds2760_device_info *di, w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1); } +static void ds2760_battery_write_rated_capacity(struct ds2760_device_info *di, + unsigned char rated_capacity) +{ + if (rated_capacity == di->raw[DS2760_RATED_CAPACITY]) + return; + + w1_ds2760_write(di->w1_dev, &rated_capacity, DS2760_RATED_CAPACITY, 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, @@ -399,6 +414,10 @@ static int ds2760_battery_probe(struct platform_device *pdev) ds2760_battery_write_status(di, status); + /* set rated capacity from module param */ + if (rated_capacity) + ds2760_battery_write_rated_capacity(di, rated_capacity); + retval = power_supply_register(&pdev->dev, &di->bat); if (retval) { dev_err(di->dev, "failed to register battery\n"); |