1 files changed, 531 insertions, 0 deletions

diff --git a/drivers/power/test_power.c b/drivers/power/test_power.c
new file mode 100644
index 000000000..f986e0cca
--- /dev/null
+++ b/drivers/power/test_power.c
@@ -0,0 +1,531 @@
+/*
+ * Power supply driver for testing.
+ *
+ * Copyright 2010  Anton Vorontsov <cbouatmailru@gmail.com>
+ *
+ * Dynamic module parameter code from the Virtual Battery Driver
+ * Copyright (C) 2008 Pylone, Inc.
+ * By: Masashi YOKOTA <yokota@pylone.jp>
+ * Originally found here:
+ * http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2
+ *
+ * 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>
+
+enum test_power_id {
+	TEST_AC,
+	TEST_BATTERY,
+	TEST_USB,
+	TEST_POWER_NUM,
+};
+
+static int ac_online			= 1;
+static int usb_online			= 1;
+static int battery_status		= POWER_SUPPLY_STATUS_DISCHARGING;
+static int battery_health		= POWER_SUPPLY_HEALTH_GOOD;
+static int battery_present		= 1; /* true */
+static int battery_technology		= POWER_SUPPLY_TECHNOLOGY_LION;
+static int battery_capacity		= 50;
+static int battery_voltage		= 3300;
+
+static bool module_initialized;
+
+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 = ac_online;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int test_power_get_usb_property(struct power_supply *psy,
+				      enum power_supply_property psp,
+				      union power_supply_propval *val)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = usb_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 = battery_status;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+		break;
+	case POWER_SUPPLY_PROP_HEALTH:
+		val->intval = battery_health;
+		break;
+	case POWER_SUPPLY_PROP_PRESENT:
+		val->intval = battery_present;
+		break;
+	case POWER_SUPPLY_PROP_TECHNOLOGY:
+		val->intval = battery_technology;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+		val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY:
+	case POWER_SUPPLY_PROP_CHARGE_NOW:
+		val->intval = battery_capacity;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+	case POWER_SUPPLY_PROP_CHARGE_FULL:
+		val->intval = 100;
+		break;
+	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+	case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
+		val->intval = 3600;
+		break;
+	case POWER_SUPPLY_PROP_TEMP:
+		val->intval = 26;
+		break;
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		val->intval = battery_voltage;
+		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_PRESENT,
+	POWER_SUPPLY_PROP_TECHNOLOGY,
+	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+	POWER_SUPPLY_PROP_CHARGE_FULL,
+	POWER_SUPPLY_PROP_CHARGE_NOW,
+	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,
+	POWER_SUPPLY_PROP_TEMP,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+static char *test_power_ac_supplied_to[] = {
+	"test_battery",
+};
+
+static struct power_supply *test_power_supplies[TEST_POWER_NUM];
+
+static const struct power_supply_desc test_power_desc[] = {
+	[TEST_AC] = {
+		.name = "test_ac",
+		.type = POWER_SUPPLY_TYPE_MAINS,
+		.properties = test_power_ac_props,
+		.num_properties = ARRAY_SIZE(test_power_ac_props),
+		.get_property = test_power_get_ac_property,
+	},
+	[TEST_BATTERY] = {
+		.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,
+	},
+	[TEST_USB] = {
+		.name = "test_usb",
+		.type = POWER_SUPPLY_TYPE_USB,
+		.properties = test_power_ac_props,
+		.num_properties = ARRAY_SIZE(test_power_ac_props),
+		.get_property = test_power_get_usb_property,
+	},
+};
+
+static const struct power_supply_config test_power_configs[] = {
+	{
+		/* test_ac */
+		.supplied_to = test_power_ac_supplied_to,
+		.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
+	}, {
+		/* test_battery */
+	}, {
+		/* test_usb */
+		.supplied_to = test_power_ac_supplied_to,
+		.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
+	},
+};
+
+static int __init test_power_init(void)
+{
+	int i;
+	int ret;
+
+	BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_supplies));
+	BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_configs));
+
+	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
+		test_power_supplies[i] = power_supply_register(NULL,
+						&test_power_desc[i],
+						&test_power_configs[i]);
+		if (IS_ERR(test_power_supplies[i])) {
+			pr_err("%s: failed to register %s\n", __func__,
+				test_power_desc[i].name);
+			ret = PTR_ERR(test_power_supplies[i]);
+			goto failed;
+		}
+	}
+
+	module_initialized = true;
+	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... */
+	ac_online = 0;
+	usb_online = 0;
+	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_initialized = false;
+}
+module_exit(test_power_exit);
+
+
+
+#define MAX_KEYLENGTH 256
+struct battery_property_map {
+	int value;
+	char const *key;
+};
+
+static struct battery_property_map map_ac_online[] = {
+	{ 0,  "off"  },
+	{ 1,  "on" },
+	{ -1, NULL  },
+};
+
+static struct battery_property_map map_status[] = {
+	{ POWER_SUPPLY_STATUS_CHARGING,     "charging"     },
+	{ POWER_SUPPLY_STATUS_DISCHARGING,  "discharging"  },
+	{ POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" },
+	{ POWER_SUPPLY_STATUS_FULL,         "full"         },
+	{ -1,                               NULL           },
+};
+
+static struct battery_property_map map_health[] = {
+	{ POWER_SUPPLY_HEALTH_GOOD,           "good"        },
+	{ POWER_SUPPLY_HEALTH_OVERHEAT,       "overheat"    },
+	{ POWER_SUPPLY_HEALTH_DEAD,           "dead"        },
+	{ POWER_SUPPLY_HEALTH_OVERVOLTAGE,    "overvoltage" },
+	{ POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure"     },
+	{ -1,                                 NULL          },
+};
+
+static struct battery_property_map map_present[] = {
+	{ 0,  "false" },
+	{ 1,  "true"  },
+	{ -1, NULL    },
+};
+
+static struct battery_property_map map_technology[] = {
+	{ POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" },
+	{ POWER_SUPPLY_TECHNOLOGY_LION, "LION" },
+	{ POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" },
+	{ POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" },
+	{ POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" },
+	{ POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" },
+	{ -1,				NULL   },
+};
+
+
+static int map_get_value(struct battery_property_map *map, const char *key,
+				int def_val)
+{
+	char buf[MAX_KEYLENGTH];
+	int cr;
+
+	strncpy(buf, key, MAX_KEYLENGTH);
+	buf[MAX_KEYLENGTH-1] = '\0';
+
+	cr = strnlen(buf, MAX_KEYLENGTH) - 1;
+	if (buf[cr] == '\n')
+		buf[cr] = '\0';
+
+	while (map->key) {
+		if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0)
+			return map->value;
+		map++;
+	}
+
+	return def_val;
+}
+
+
+static const char *map_get_key(struct battery_property_map *map, int value,
+				const char *def_key)
+{
+	while (map->key) {
+		if (map->value == value)
+			return map->key;
+		map++;
+	}
+
+	return def_key;
+}
+
+static inline void signal_power_supply_changed(struct power_supply *psy)
+{
+	if (module_initialized)
+		power_supply_changed(psy);
+}
+
+static int param_set_ac_online(const char *key, const struct kernel_param *kp)
+{
+	ac_online = map_get_value(map_ac_online, key, ac_online);
+	signal_power_supply_changed(test_power_supplies[TEST_AC]);
+	return 0;
+}
+
+static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
+{
+	strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
+	return strlen(buffer);
+}
+
+static int param_set_usb_online(const char *key, const struct kernel_param *kp)
+{
+	usb_online = map_get_value(map_ac_online, key, usb_online);
+	signal_power_supply_changed(test_power_supplies[TEST_USB]);
+	return 0;
+}
+
+static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
+{
+	strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown"));
+	return strlen(buffer);
+}
+
+static int param_set_battery_status(const char *key,
+					const struct kernel_param *kp)
+{
+	battery_status = map_get_value(map_status, key, battery_status);
+	signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+	return 0;
+}
+
+static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
+{
+	strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
+	return strlen(buffer);
+}
+
+static int param_set_battery_health(const char *key,
+					const struct kernel_param *kp)
+{
+	battery_health = map_get_value(map_health, key, battery_health);
+	signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+	return 0;
+}
+
+static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
+{
+	strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
+	return strlen(buffer);
+}
+
+static int param_set_battery_present(const char *key,
+					const struct kernel_param *kp)
+{
+	battery_present = map_get_value(map_present, key, battery_present);
+	signal_power_supply_changed(test_power_supplies[TEST_AC]);
+	return 0;
+}
+
+static int param_get_battery_present(char *buffer,
+					const struct kernel_param *kp)
+{
+	strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
+	return strlen(buffer);
+}
+
+static int param_set_battery_technology(const char *key,
+					const struct kernel_param *kp)
+{
+	battery_technology = map_get_value(map_technology, key,
+						battery_technology);
+	signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+	return 0;
+}
+
+static int param_get_battery_technology(char *buffer,
+					const struct kernel_param *kp)
+{
+	strcpy(buffer,
+		map_get_key(map_technology, battery_technology, "unknown"));
+	return strlen(buffer);
+}
+
+static int param_set_battery_capacity(const char *key,
+					const struct kernel_param *kp)
+{
+	int tmp;
+
+	if (1 != sscanf(key, "%d", &tmp))
+		return -EINVAL;
+
+	battery_capacity = tmp;
+	signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+	return 0;
+}
+
+#define param_get_battery_capacity param_get_int
+
+static int param_set_battery_voltage(const char *key,
+					const struct kernel_param *kp)
+{
+	int tmp;
+
+	if (1 != sscanf(key, "%d", &tmp))
+		return -EINVAL;
+
+	battery_voltage = tmp;
+	signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+	return 0;
+}
+
+#define param_get_battery_voltage param_get_int
+
+static struct kernel_param_ops param_ops_ac_online = {
+	.set = param_set_ac_online,
+	.get = param_get_ac_online,
+};
+
+static struct kernel_param_ops param_ops_usb_online = {
+	.set = param_set_usb_online,
+	.get = param_get_usb_online,
+};
+
+static struct kernel_param_ops param_ops_battery_status = {
+	.set = param_set_battery_status,
+	.get = param_get_battery_status,
+};
+
+static struct kernel_param_ops param_ops_battery_present = {
+	.set = param_set_battery_present,
+	.get = param_get_battery_present,
+};
+
+static struct kernel_param_ops param_ops_battery_technology = {
+	.set = param_set_battery_technology,
+	.get = param_get_battery_technology,
+};
+
+static struct kernel_param_ops param_ops_battery_health = {
+	.set = param_set_battery_health,
+	.get = param_get_battery_health,
+};
+
+static struct kernel_param_ops param_ops_battery_capacity = {
+	.set = param_set_battery_capacity,
+	.get = param_get_battery_capacity,
+};
+
+static struct kernel_param_ops param_ops_battery_voltage = {
+	.set = param_set_battery_voltage,
+	.get = param_get_battery_voltage,
+};
+
+#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);
+#define param_check_battery_present(name, p) __param_check(name, p, void);
+#define param_check_battery_technology(name, p) __param_check(name, p, void);
+#define param_check_battery_health(name, p) __param_check(name, p, void);
+#define param_check_battery_capacity(name, p) __param_check(name, p, void);
+#define param_check_battery_voltage(name, p) __param_check(name, p, void);
+
+
+module_param(ac_online, ac_online, 0644);
+MODULE_PARM_DESC(ac_online, "AC charging state <on|off>");
+
+module_param(usb_online, usb_online, 0644);
+MODULE_PARM_DESC(usb_online, "USB charging state <on|off>");
+
+module_param(battery_status, battery_status, 0644);
+MODULE_PARM_DESC(battery_status,
+	"battery status <charging|discharging|not-charging|full>");
+
+module_param(battery_present, battery_present, 0644);
+MODULE_PARM_DESC(battery_present,
+	"battery presence state <good|overheat|dead|overvoltage|failure>");
+
+module_param(battery_technology, battery_technology, 0644);
+MODULE_PARM_DESC(battery_technology,
+	"battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>");
+
+module_param(battery_health, battery_health, 0644);
+MODULE_PARM_DESC(battery_health,
+	"battery health state <good|overheat|dead|overvoltage|failure>");
+
+module_param(battery_capacity, battery_capacity, 0644);
+MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");
+
+module_param(battery_voltage, battery_voltage, 0644);
+MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)");
+
+MODULE_DESCRIPTION("Power supply driver for testing");
+MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
+MODULE_LICENSE("GPL");