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power: supply: core: fix charge_behaviour formatting

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This property is documented to have a special format which exposes all
available behaviours and the currently active one at the same time. For
this special format some helpers are provided.

When the charge_behaviour property was added in
1b0b6cc803 ("power: supply: add charge_behaviour attributes"), it did
not update the default logic in in power_supply_sysfs.c to use the
format helpers. Thus by default only the currently active behaviour
is printed. This fixes the default logic to follow the documented
format.

There is currently only one in-tree drivers exposing charge behaviours -
thinkpad_acpi, which is not affected by the change, as it directly uses
the helpers and does not use the power_supply_sysfs.c logic.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20240303-power_supply-charge_behaviour_prop-v2-3-8ebb0a7c2409@weissschuh.net
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Thomas Weißschuh 2024-03-03 16:31:15 +01:00 committed by Sebastian Reichel
parent 521d75b417
commit 4e61f1e9d5
2 changed files with 21 additions and 0 deletions
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20
drivers/power/supply/power_supply_sysfs.c
View File

@ -271,6 +271,23 @@ static ssize_t power_supply_show_usb_type(struct device *dev,
return count;
}
static ssize_t power_supply_show_charge_behaviour(struct device *dev,
struct power_supply *psy,
union power_supply_propval *value,
char *buf)
{
int ret;
ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
value);
if (ret < 0)
return ret;
return power_supply_charge_behaviour_show(dev, psy->desc->charge_behaviours,
value->intval, buf);
}
static ssize_t power_supply_show_property(struct device *dev,
struct device_attribute *attr,
char *buf) {
@ -303,6 +320,9 @@ static ssize_t power_supply_show_property(struct device *dev,
ret = power_supply_show_usb_type(dev, psy->desc,
&value, buf);
break;
case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
ret = power_supply_show_charge_behaviour(dev, psy, &value, buf);
break;
case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
ret = sysfs_emit(buf, "%s\n", value.strval);
break;

1
include/linux/power_supply.h
View File

@ -242,6 +242,7 @@ struct power_supply_config {
struct power_supply_desc {
const char *name;
enum power_supply_type type;
u8 charge_behaviours;
const enum power_supply_usb_type *usb_types;
size_t num_usb_types;
const enum power_supply_property *properties;