--- /dev/null
+/*
+ * 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");
Code Review / kvmfornfv.git / blobdiff