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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>
This commit is contained in:
Sascha Silbe 2010-12-10 23:05:19 +01:00 committed by Anton Vorontsov
parent c566d299f9
commit b202a5e6c9
1 changed files with 54 additions and 0 deletions
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54
drivers/power/olpc_battery.c
View File

@ -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,