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power: supply: test-power: implement a power supply extension

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Allow easy testing of the new power supply extension functionality.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20241211-power-supply-extensions-v6-2-9d9dc3f3d387@weissschuh.net
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Thomas Weißschuh 2024-12-11 20:57:56 +01:00 committed by Sebastian Reichel
parent 6037802bba
commit 9d76d5de87
1 changed files with 111 additions and 0 deletions
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111
drivers/power/supply/test_power.c
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@ -37,6 +37,7 @@ static int battery_charge_counter = -1000;
static int battery_current = -1600;
static enum power_supply_charge_behaviour battery_charge_behaviour =
POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
static bool battery_extension;
static bool module_initialized;
@ -238,6 +239,85 @@ static const struct power_supply_config test_power_configs[] = {
},
};
static int test_power_battery_extmanufacture_year = 1234;
static int test_power_battery_exttemp_max = 1000;
static const enum power_supply_property test_power_battery_extprops[] = {
POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
POWER_SUPPLY_PROP_TEMP_MAX,
};
static int test_power_battery_extget_property(struct power_supply *psy,
const struct power_supply_ext *ext,
void *ext_data,
enum power_supply_property psp,
union power_supply_propval *val)
{
switch (psp) {
case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
val->intval = test_power_battery_extmanufacture_year;
break;
case POWER_SUPPLY_PROP_TEMP_MAX:
val->intval = test_power_battery_exttemp_max;
break;
default:
return -EINVAL;
}
return 0;
}
static int test_power_battery_extset_property(struct power_supply *psy,
const struct power_supply_ext *ext,
void *ext_data,
enum power_supply_property psp,
const union power_supply_propval *val)
{
switch (psp) {
case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
test_power_battery_extmanufacture_year = val->intval;
break;
case POWER_SUPPLY_PROP_TEMP_MAX:
test_power_battery_exttemp_max = val->intval;
break;
default:
return -EINVAL;
}
return 0;
}
static int test_power_battery_extproperty_is_writeable(struct power_supply *psy,
const struct power_supply_ext *ext,
void *ext_data,
enum power_supply_property psp)
{
return true;
}
static const struct power_supply_ext test_power_battery_ext = {
.properties = test_power_battery_extprops,
.num_properties = ARRAY_SIZE(test_power_battery_extprops),
.get_property = test_power_battery_extget_property,
.set_property = test_power_battery_extset_property,
.property_is_writeable = test_power_battery_extproperty_is_writeable,
};
static void test_power_configure_battery_extension(bool enable)
{
struct power_supply *psy;
psy = test_power_supplies[TEST_BATTERY];
if (enable) {
if (power_supply_register_extension(psy, &test_power_battery_ext, NULL)) {
pr_err("registering battery extension failed\n");
return;
}
} else {
power_supply_unregister_extension(psy, &test_power_battery_ext);
}
battery_extension = enable;
}
static int __init test_power_init(void)
{
int i;
@ -258,6 +338,8 @@ static int __init test_power_init(void)
}
}
test_power_configure_battery_extension(true);
module_initialized = true;
return 0;
failed:
@ -524,6 +606,26 @@ static int param_set_battery_current(const char *key,
#define param_get_battery_current param_get_int
static int param_set_battery_extension(const char *key,
const struct kernel_param *kp)
{
bool prev_battery_extension;
int ret;
prev_battery_extension = battery_extension;
ret = param_set_bool(key, kp);
if (ret)
return ret;
if (prev_battery_extension != battery_extension)
test_power_configure_battery_extension(battery_extension);
return 0;
}
#define param_get_battery_extension param_get_bool
static const struct kernel_param_ops param_ops_ac_online = {
.set = param_set_ac_online,
.get = param_get_ac_online,
@ -574,6 +676,11 @@ static const struct kernel_param_ops param_ops_battery_current = {
.get = param_get_battery_current,
};
static const struct kernel_param_ops param_ops_battery_extension = {
.set = param_set_battery_extension,
.get = param_get_battery_extension,
};
#define param_check_ac_online(name, p) __param_check(name, p, void);
#define param_check_usb_online(name, p) __param_check(name, p, void);
#define param_check_battery_status(name, p) __param_check(name, p, void);
@ -584,6 +691,7 @@ static const struct kernel_param_ops param_ops_battery_current = {
#define param_check_battery_voltage(name, p) __param_check(name, p, void);
#define param_check_battery_charge_counter(name, p) __param_check(name, p, void);
#define param_check_battery_current(name, p) __param_check(name, p, void);
#define param_check_battery_extension(name, p) __param_check(name, p, void);
module_param(ac_online, ac_online, 0644);
@ -621,6 +729,9 @@ MODULE_PARM_DESC(battery_charge_counter,
module_param(battery_current, battery_current, 0644);
MODULE_PARM_DESC(battery_current, "battery current (milliampere)");
module_param(battery_extension, battery_extension, 0644);
MODULE_PARM_DESC(battery_extension, "battery extension");
MODULE_DESCRIPTION("Power supply driver for testing");
MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
MODULE_LICENSE("GPL");