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Message-Id: <20241211-power-supply-extensions-v6-2-9d9dc3f3d387@weissschuh.net>
Date: Wed, 11 Dec 2024 20:57:56 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Sebastian Reichel <sre@...nel.org>, Armin Wolf <W_Armin@....de>,
Hans de Goede <hdegoede@...hat.com>,
Thomas Weißschuh <thomas@...ssschuh.net>,
Benson Leung <bleung@...omium.org>, Guenter Roeck <groeck@...omium.org>
Cc: linux-kernel@...r.kernel.org, chrome-platform@...ts.linux.dev,
linux-pm@...r.kernel.org,
Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH v6 2/4] power: supply: test-power: implement a power supply
extension
Allow easy testing of the new power supply extension functionality.
Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
drivers/power/supply/test_power.c | 111 ++++++++++++++++++++++++++++++++++++++
1 file changed, 111 insertions(+)
diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
index 442ceb7795e1d84e34da2801d228d53fb67e08d9..66f9ef52e0f3e6e6e6bebcfd438c2acd421284ec 100644
--- a/drivers/power/supply/test_power.c
+++ b/drivers/power/supply/test_power.c
@@ -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@...il.com>");
MODULE_LICENSE("GPL");
--
2.47.1
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