power_supply: Add test_power driver
Just a handy driver that is used for testing purposes.
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
diff --git a/drivers/power/test_power.c b/drivers/power/test_power.c
new file mode 100644
index 0000000..0cd9f67
--- /dev/null
+++ b/drivers/power/test_power.c
@@ -0,0 +1,163 @@
+/*
+ * Power supply driver for testing.
+ *
+ * Copyright 2010 Anton Vorontsov <cbouatmailru@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/vermagic.h>
+
+static int test_power_ac_online = 1;
+static int test_power_battery_status = POWER_SUPPLY_STATUS_CHARGING;
+
+static int test_power_get_ac_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = test_power_ac_online;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int test_power_get_battery_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = "Test battery";
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = "Linux";
+ break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ val->strval = UTS_RELEASE;
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = test_power_battery_status;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = 50;
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
+ val->intval = 3600;
+ break;
+ default:
+ pr_info("%s: some properties deliberately report errors.\n",
+ __func__);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property test_power_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property test_power_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_EMPTY,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+};
+
+static char *test_power_ac_supplied_to[] = {
+ "test_battery",
+};
+
+static struct power_supply test_power_supplies[] = {
+ {
+ .name = "test_ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .supplied_to = test_power_ac_supplied_to,
+ .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
+ .properties = test_power_ac_props,
+ .num_properties = ARRAY_SIZE(test_power_ac_props),
+ .get_property = test_power_get_ac_property,
+ }, {
+ .name = "test_battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = test_power_battery_props,
+ .num_properties = ARRAY_SIZE(test_power_battery_props),
+ .get_property = test_power_get_battery_property,
+ },
+};
+
+static int __init test_power_init(void)
+{
+ int i;
+ int ret;
+
+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
+ ret = power_supply_register(NULL, &test_power_supplies[i]);
+ if (ret) {
+ pr_err("%s: failed to register %s\n", __func__,
+ test_power_supplies[i].name);
+ goto failed;
+ }
+ }
+
+ return 0;
+failed:
+ while (--i >= 0)
+ power_supply_unregister(&test_power_supplies[i]);
+ return ret;
+}
+module_init(test_power_init);
+
+static void __exit test_power_exit(void)
+{
+ int i;
+
+ /* Let's see how we handle changes... */
+ test_power_ac_online = 0;
+ test_power_battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
+ power_supply_changed(&test_power_supplies[i]);
+ pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
+ __func__);
+ ssleep(10);
+
+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
+ power_supply_unregister(&test_power_supplies[i]);
+}
+module_exit(test_power_exit);
+
+MODULE_DESCRIPTION("Power supply driver for testing");
+MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
+MODULE_LICENSE("GPL");