redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

power: supply: twl4030-charger: add writable INPUT_CURRENT_LIMIT property 

Currently, the twl4030 charger defines its own max_current by directly
creating sysfs nodes. It should use the input_current_limit property
which is e.g. used by the bq24257 driver.

This patch adds the input_current_property with the same semantics as
the max_current property. The code to manage the max_current property
is removed by a separate patch.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
hifive-unleashed-5.1
H. Nikolaus Schaller 2017-04-14 20:25:56 +02:00 committed by Sebastian Reichel
parent 6cf62a3b97
commit 3fb319c2cd
1 changed files with 59 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
drivers/power/supply/twl4030_charger.c
View File

@ -922,6 +922,28 @@ static int twl4030_bci_get_property(struct power_supply *psy,
twl4030_bci_state_to_status(state) !=
POWER_SUPPLY_STATUS_NOT_CHARGING;
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
val->intval = -1;
if (psy->desc->type != POWER_SUPPLY_TYPE_USB) {
if (!bci->ac_is_active)
val->intval = bci->ac_cur;
} else {
if (bci->ac_is_active)
val->intval = bci->usb_cur_target;
}
if (val->intval < 0) {
u8 bcictl1;
val->intval = twl4030bci_read_adc_val(TWL4030_BCIIREF1);
if (val->intval < 0)
return val->intval;
ret = twl4030_bci_read(TWL4030_BCICTL1, &bcictl1);
if (ret < 0)
return ret;
val->intval = regval2ua(val->intval, bcictl1 &
TWL4030_CGAIN);
}
break;
default:
return -EINVAL;
}
@ -929,11 +951,44 @@ static int twl4030_bci_get_property(struct power_supply *psy,
return 0;
}
static int twl4030_bci_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct twl4030_bci *bci = dev_get_drvdata(psy->dev.parent);
switch (psp) {
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
if (psy->desc->type == POWER_SUPPLY_TYPE_USB)
bci->usb_cur_target = val->intval;
else
bci->ac_cur = val->intval;
twl4030_charger_update_current(bci);
break;
default:
return -EINVAL;
}
return 0;
}
int twl4030_bci_property_is_writeable(struct power_supply *psy,
enum power_supply_property psp)
{
switch (psp) {
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
return true;
default:
return false;
}
}
static enum power_supply_property twl4030_charger_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
};
#ifdef CONFIG_OF
@ -970,6 +1025,8 @@ static const struct power_supply_desc twl4030_bci_ac_desc = {
.properties = twl4030_charger_props,
.num_properties = ARRAY_SIZE(twl4030_charger_props),
.get_property = twl4030_bci_get_property,
.set_property = twl4030_bci_set_property,
.property_is_writeable = twl4030_bci_property_is_writeable,
};
static const struct power_supply_desc twl4030_bci_usb_desc = {
@ -978,6 +1035,8 @@ static const struct power_supply_desc twl4030_bci_usb_desc = {
.properties = twl4030_charger_props,
.num_properties = ARRAY_SIZE(twl4030_charger_props),
.get_property = twl4030_bci_get_property,
.set_property = twl4030_bci_set_property,
.property_is_writeable = twl4030_bci_property_is_writeable,
};
static int twl4030_bci_probe(struct platform_device *pdev)