diff options
Diffstat (limited to 'drivers/power/olpc_battery.c')
| -rw-r--r-- | drivers/power/olpc_battery.c | 71 |
1 files changed, 63 insertions, 8 deletions
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c index 7385092f9bc..1ec810ada5e 100644 --- a/drivers/power/olpc_battery.c +++ b/drivers/power/olpc_battery.c @@ -17,6 +17,7 @@ #include <linux/power_supply.h> #include <linux/jiffies.h> #include <linux/sched.h> +#include <linux/olpc-ec.h> #include <asm/olpc.h> @@ -231,11 +232,9 @@ static int olpc_bat_get_charge_full_design(union power_supply_propval *val) case POWER_SUPPLY_TECHNOLOGY_LiFe: switch (mfr) { - case 1: /* Gold Peak */ - val->intval = 2800000; - break; + case 1: /* Gold Peak, fall through */ case 2: /* BYD */ - val->intval = 3100000; + val->intval = 2800000; break; default: return -EIO; @@ -267,6 +266,55 @@ static int olpc_bat_get_charge_now(union power_supply_propval *val) return 0; } +static int olpc_bat_get_voltage_max_design(union power_supply_propval *val) +{ + uint8_t ec_byte; + union power_supply_propval tech; + int mfr; + int ret; + + ret = olpc_bat_get_tech(&tech); + if (ret) + return ret; + + ec_byte = BAT_ADDR_MFR_TYPE; + ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1); + if (ret) + return ret; + + mfr = ec_byte >> 4; + + switch (tech.intval) { + case POWER_SUPPLY_TECHNOLOGY_NiMH: + switch (mfr) { + case 1: /* Gold Peak */ + val->intval = 6000000; + break; + default: + return -EIO; + } + break; + + case POWER_SUPPLY_TECHNOLOGY_LiFe: + switch (mfr) { + case 1: /* Gold Peak */ + val->intval = 6400000; + break; + case 2: /* BYD */ + val->intval = 6500000; + break; + default: + return -EIO; + } + break; + + default: + return -EIO; + } + + return ret; +} + /********************************************************************* * Battery properties *********************************************************************/ @@ -401,6 +449,11 @@ static int olpc_bat_get_property(struct power_supply *psy, sprintf(bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf)); val->strval = bat_serial; break; + case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: + ret = olpc_bat_get_voltage_max_design(val); + if (ret) + return ret; + break; default: ret = -EINVAL; break; @@ -428,6 +481,7 @@ static enum power_supply_property olpc_xo1_bat_props[] = { POWER_SUPPLY_PROP_MANUFACTURER, POWER_SUPPLY_PROP_SERIAL_NUMBER, POWER_SUPPLY_PROP_CHARGE_COUNTER, + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, }; /* XO-1.5 does not have ambient temperature property */ @@ -449,6 +503,7 @@ static enum power_supply_property olpc_xo15_bat_props[] = { POWER_SUPPLY_PROP_MANUFACTURER, POWER_SUPPLY_PROP_SERIAL_NUMBER, POWER_SUPPLY_PROP_CHARGE_COUNTER, + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, }; /* EEPROM reading goes completely around the power_supply API, sadly */ @@ -543,7 +598,7 @@ static int olpc_battery_suspend(struct platform_device *pdev, return 0; } -static int __devinit olpc_battery_probe(struct platform_device *pdev) +static int olpc_battery_probe(struct platform_device *pdev) { int ret; uint8_t status; @@ -604,7 +659,7 @@ battery_failed: return ret; } -static int __devexit olpc_battery_remove(struct platform_device *pdev) +static int olpc_battery_remove(struct platform_device *pdev) { device_remove_file(olpc_bat.dev, &olpc_bat_error); device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom); @@ -613,7 +668,7 @@ static int __devexit olpc_battery_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id olpc_battery_ids[] __devinitconst = { +static const struct of_device_id olpc_battery_ids[] = { { .compatible = "olpc,xo1-battery" }, {} }; @@ -626,7 +681,7 @@ static struct platform_driver olpc_battery_driver = { .of_match_table = olpc_battery_ids, }, .probe = olpc_battery_probe, - .remove = __devexit_p(olpc_battery_remove), + .remove = olpc_battery_remove, .suspend = olpc_battery_suspend, }; |