diff options
| author |   Sascha Silbe <sascha-pgp@silbe.org> | 2010-12-10 23:05:19 +0100 |
|---|---|---|
| committer |   Anton Vorontsov <cbouatmailru@gmail.com> | 2011-01-12 20:28:45 +0300 |
| commit | b202a5e6c94d8c43ade5adb97e87734cc4f4f228 (patch) | |
| tree | fd850aa811ca98470c01226dec256a30ea010949 /drivers/power | |
| parent | olpc_battery: Ambient temperature is not available on XO-1.5 (diff) | |
| download | linux-dev-b202a5e6c94d8c43ade5adb97e87734cc4f4f228.tar.xz linux-dev-b202a5e6c94d8c43ade5adb97e87734cc4f4f228.zip | |
olpc_battery: Add support for CHARGE_FULL_DESIGN
Some user space software (read: UPower) uses CHARGE_FULL_DESIGN for internal
calculations. The design capacity of the OLPC batteries is effectively fixed
and only needs to be exported.
Signed-off-by: Sascha Silbe <sascha-pgp@silbe.org>
Signed-off-by: Paul Fox <pgf@laptop.org>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/olpc_battery.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c index 0cd4f15e3013..663b73023eaf 100644 --- a/drivers/power/olpc_battery.c +++ b/drivers/power/olpc_battery.c @@ -201,6 +201,54 @@ static int olpc_bat_get_tech(union power_supply_propval *val) return ret; } +static int olpc_bat_get_charge_full_design(union power_supply_propval *val) +{ + uint8_t ec_byte; + union power_supply_propval tech; + int ret, mfr; + + 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 = 3000000*.8; + break; + default: + return -EIO; + } + break; + + case POWER_SUPPLY_TECHNOLOGY_LiFe: + switch (mfr) { + case 1: /* Gold Peak */ + val->intval = 2800000; + break; + case 2: /* BYD */ + val->intval = 3100000; + break; + default: + return -EIO; + } + break; + + default: + return -EIO; + } + + return ret; +} + /********************************************************************* * Battery properties *********************************************************************/ @@ -294,6 +342,11 @@ static int olpc_bat_get_property(struct power_supply *psy, else val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; break; + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + ret = olpc_bat_get_charge_full_design(val); + if (ret) + return ret; + break; case POWER_SUPPLY_PROP_TEMP: ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) @@ -341,6 +394,7 @@ static enum power_supply_property olpc_xo1_bat_props[] = { POWER_SUPPLY_PROP_CURRENT_AVG, POWER_SUPPLY_PROP_CAPACITY, POWER_SUPPLY_PROP_CAPACITY_LEVEL, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_TEMP, POWER_SUPPLY_PROP_TEMP_AMBIENT, POWER_SUPPLY_PROP_MANUFACTURER, |