diff options
Diffstat (limited to 'drivers/power/olpc_battery.c')
| -rw-r--r-- | drivers/power/olpc_battery.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c index 58e419299cd..8fefe5a7355 100644 --- a/drivers/power/olpc_battery.c +++ b/drivers/power/olpc_battery.c @@ -10,7 +10,9 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/types.h> #include <linux/err.h> +#include <linux/device.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/jiffies.h> @@ -231,6 +233,14 @@ static int olpc_bat_get_property(struct power_supply *psy, if (ret) return ret; break; + case POWER_SUPPLY_PROP_CHARGE_TYPE: + if (ec_byte & BAT_STAT_TRICKLE) + val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + else if (ec_byte & BAT_STAT_CHARGING) + val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST; + else + val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; + break; case POWER_SUPPLY_PROP_PRESENT: val->intval = !!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)); @@ -276,6 +286,14 @@ static int olpc_bat_get_property(struct power_supply *psy, return ret; val->intval = ec_byte; break; + case POWER_SUPPLY_PROP_CAPACITY_LEVEL: + if (ec_byte & BAT_STAT_FULL) + val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL; + else if (ec_byte & BAT_STAT_LOW) + val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW; + else + val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; + break; case POWER_SUPPLY_PROP_TEMP: ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) @@ -315,12 +333,14 @@ static int olpc_bat_get_property(struct power_supply *psy, static enum power_supply_property olpc_bat_props[] = { POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CHARGE_TYPE, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_VOLTAGE_AVG, POWER_SUPPLY_PROP_CURRENT_AVG, POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_CAPACITY_LEVEL, POWER_SUPPLY_PROP_TEMP, POWER_SUPPLY_PROP_TEMP_AMBIENT, POWER_SUPPLY_PROP_MANUFACTURER, @@ -370,6 +390,29 @@ static struct bin_attribute olpc_bat_eeprom = { .read = olpc_bat_eeprom_read, }; +/* Allow userspace to see the specific error value pulled from the EC */ + +static ssize_t olpc_bat_error_read(struct device *dev, + struct device_attribute *attr, char *buf) +{ + uint8_t ec_byte; + ssize_t ret; + + ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", ec_byte); +} + +static struct device_attribute olpc_bat_error = { + .attr = { + .name = "error", + .mode = S_IRUGO, + }, + .show = olpc_bat_error_read, +}; + /********************************************************************* * Initialisation *********************************************************************/ @@ -433,8 +476,14 @@ static int __init olpc_bat_init(void) if (ret) goto eeprom_failed; + ret = device_create_file(olpc_bat.dev, &olpc_bat_error); + if (ret) + goto error_failed; + goto success; +error_failed: + device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom); eeprom_failed: power_supply_unregister(&olpc_bat); battery_failed: @@ -447,6 +496,7 @@ success: static void __exit olpc_bat_exit(void) { + device_remove_file(olpc_bat.dev, &olpc_bat_error); device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom); power_supply_unregister(&olpc_bat); power_supply_unregister(&olpc_ac); |