591 lines
16 KiB
C
591 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Power supply driver for testing.
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*
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* Copyright 2010 Anton Vorontsov <cbouatmailru@gmail.com>
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*
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* Dynamic module parameter code from the Virtual Battery Driver
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* Copyright (C) 2008 Pylone, Inc.
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* By: Masashi YOKOTA <yokota@pylone.jp>
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* Originally found here:
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* http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/power_supply.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <generated/utsrelease.h>
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enum test_power_id {
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TEST_AC,
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TEST_BATTERY,
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TEST_USB,
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TEST_POWER_NUM,
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};
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static int ac_online = 1;
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static int usb_online = 1;
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static int battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
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static int battery_health = POWER_SUPPLY_HEALTH_GOOD;
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static int battery_present = 1; /* true */
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static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION;
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static int battery_capacity = 50;
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static int battery_voltage = 3300;
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static int battery_charge_counter = -1000;
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static int battery_current = -1600;
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static bool module_initialized;
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static int test_power_get_ac_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = ac_online;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int test_power_get_usb_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = usb_online;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int test_power_get_battery_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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switch (psp) {
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case POWER_SUPPLY_PROP_MODEL_NAME:
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val->strval = "Test battery";
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break;
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case POWER_SUPPLY_PROP_MANUFACTURER:
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val->strval = "Linux";
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break;
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case POWER_SUPPLY_PROP_SERIAL_NUMBER:
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val->strval = UTS_RELEASE;
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break;
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case POWER_SUPPLY_PROP_STATUS:
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val->intval = battery_status;
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break;
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case POWER_SUPPLY_PROP_CHARGE_TYPE:
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val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
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break;
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case POWER_SUPPLY_PROP_HEALTH:
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val->intval = battery_health;
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break;
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case POWER_SUPPLY_PROP_PRESENT:
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val->intval = battery_present;
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break;
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case POWER_SUPPLY_PROP_TECHNOLOGY:
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val->intval = battery_technology;
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break;
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case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
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val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
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break;
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case POWER_SUPPLY_PROP_CAPACITY:
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case POWER_SUPPLY_PROP_CHARGE_NOW:
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val->intval = battery_capacity;
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break;
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case POWER_SUPPLY_PROP_CHARGE_COUNTER:
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val->intval = battery_charge_counter;
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break;
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case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
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case POWER_SUPPLY_PROP_CHARGE_FULL:
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val->intval = 100;
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break;
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case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
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case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
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val->intval = 3600;
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break;
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case POWER_SUPPLY_PROP_TEMP:
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val->intval = 26;
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break;
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case POWER_SUPPLY_PROP_VOLTAGE_NOW:
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val->intval = battery_voltage;
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break;
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case POWER_SUPPLY_PROP_CURRENT_AVG:
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case POWER_SUPPLY_PROP_CURRENT_NOW:
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val->intval = battery_current;
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break;
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default:
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pr_info("%s: some properties deliberately report errors.\n",
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__func__);
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return -EINVAL;
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}
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return 0;
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}
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static enum power_supply_property test_power_ac_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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};
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static enum power_supply_property test_power_battery_props[] = {
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POWER_SUPPLY_PROP_STATUS,
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POWER_SUPPLY_PROP_CHARGE_TYPE,
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POWER_SUPPLY_PROP_HEALTH,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_TECHNOLOGY,
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POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
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POWER_SUPPLY_PROP_CHARGE_FULL,
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POWER_SUPPLY_PROP_CHARGE_NOW,
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POWER_SUPPLY_PROP_CHARGE_COUNTER,
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POWER_SUPPLY_PROP_CAPACITY,
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POWER_SUPPLY_PROP_CAPACITY_LEVEL,
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POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
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POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
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POWER_SUPPLY_PROP_MODEL_NAME,
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POWER_SUPPLY_PROP_MANUFACTURER,
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POWER_SUPPLY_PROP_SERIAL_NUMBER,
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POWER_SUPPLY_PROP_TEMP,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CURRENT_AVG,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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};
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static char *test_power_ac_supplied_to[] = {
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"test_battery",
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};
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static struct power_supply *test_power_supplies[TEST_POWER_NUM];
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static const struct power_supply_desc test_power_desc[] = {
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[TEST_AC] = {
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.name = "test_ac",
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.type = POWER_SUPPLY_TYPE_MAINS,
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.properties = test_power_ac_props,
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.num_properties = ARRAY_SIZE(test_power_ac_props),
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.get_property = test_power_get_ac_property,
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},
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[TEST_BATTERY] = {
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.name = "test_battery",
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.type = POWER_SUPPLY_TYPE_BATTERY,
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.properties = test_power_battery_props,
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.num_properties = ARRAY_SIZE(test_power_battery_props),
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.get_property = test_power_get_battery_property,
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},
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[TEST_USB] = {
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.name = "test_usb",
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.type = POWER_SUPPLY_TYPE_USB,
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.properties = test_power_ac_props,
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.num_properties = ARRAY_SIZE(test_power_ac_props),
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.get_property = test_power_get_usb_property,
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},
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};
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static const struct power_supply_config test_power_configs[] = {
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{
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/* test_ac */
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.supplied_to = test_power_ac_supplied_to,
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.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
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}, {
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/* test_battery */
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}, {
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/* test_usb */
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.supplied_to = test_power_ac_supplied_to,
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.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
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},
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};
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static int __init test_power_init(void)
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{
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int i;
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int ret;
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BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_supplies));
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BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_configs));
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for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
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test_power_supplies[i] = power_supply_register(NULL,
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&test_power_desc[i],
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&test_power_configs[i]);
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if (IS_ERR(test_power_supplies[i])) {
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pr_err("%s: failed to register %s\n", __func__,
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test_power_desc[i].name);
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ret = PTR_ERR(test_power_supplies[i]);
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goto failed;
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}
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}
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module_initialized = true;
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return 0;
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failed:
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while (--i >= 0)
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power_supply_unregister(test_power_supplies[i]);
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return ret;
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}
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module_init(test_power_init);
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static void __exit test_power_exit(void)
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{
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int i;
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/* Let's see how we handle changes... */
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ac_online = 0;
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usb_online = 0;
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battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
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for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
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power_supply_changed(test_power_supplies[i]);
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pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
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__func__);
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ssleep(10);
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for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
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power_supply_unregister(test_power_supplies[i]);
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module_initialized = false;
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}
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module_exit(test_power_exit);
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#define MAX_KEYLENGTH 256
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struct battery_property_map {
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int value;
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char const *key;
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};
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static struct battery_property_map map_ac_online[] = {
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{ 0, "off" },
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{ 1, "on" },
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{ -1, NULL },
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};
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static struct battery_property_map map_status[] = {
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{ POWER_SUPPLY_STATUS_CHARGING, "charging" },
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{ POWER_SUPPLY_STATUS_DISCHARGING, "discharging" },
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{ POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" },
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{ POWER_SUPPLY_STATUS_FULL, "full" },
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{ -1, NULL },
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};
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static struct battery_property_map map_health[] = {
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{ POWER_SUPPLY_HEALTH_GOOD, "good" },
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{ POWER_SUPPLY_HEALTH_OVERHEAT, "overheat" },
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{ POWER_SUPPLY_HEALTH_DEAD, "dead" },
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{ POWER_SUPPLY_HEALTH_OVERVOLTAGE, "overvoltage" },
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{ POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure" },
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{ -1, NULL },
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};
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static struct battery_property_map map_present[] = {
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{ 0, "false" },
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{ 1, "true" },
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{ -1, NULL },
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};
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static struct battery_property_map map_technology[] = {
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{ POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" },
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{ POWER_SUPPLY_TECHNOLOGY_LION, "LION" },
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{ POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" },
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{ POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" },
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{ POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" },
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{ POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" },
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{ -1, NULL },
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};
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static int map_get_value(struct battery_property_map *map, const char *key,
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int def_val)
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{
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char buf[MAX_KEYLENGTH];
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int cr;
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strscpy(buf, key, MAX_KEYLENGTH);
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cr = strnlen(buf, MAX_KEYLENGTH) - 1;
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if (cr < 0)
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return def_val;
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if (buf[cr] == '\n')
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buf[cr] = '\0';
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while (map->key) {
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if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0)
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return map->value;
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map++;
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}
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return def_val;
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}
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static const char *map_get_key(struct battery_property_map *map, int value,
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const char *def_key)
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{
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while (map->key) {
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if (map->value == value)
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return map->key;
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map++;
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}
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return def_key;
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}
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static inline void signal_power_supply_changed(struct power_supply *psy)
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{
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if (module_initialized)
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power_supply_changed(psy);
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}
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static int param_set_ac_online(const char *key, const struct kernel_param *kp)
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{
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ac_online = map_get_value(map_ac_online, key, ac_online);
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signal_power_supply_changed(test_power_supplies[TEST_AC]);
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return 0;
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}
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static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
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{
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return sprintf(buffer, "%s\n",
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map_get_key(map_ac_online, ac_online, "unknown"));
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}
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static int param_set_usb_online(const char *key, const struct kernel_param *kp)
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{
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usb_online = map_get_value(map_ac_online, key, usb_online);
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signal_power_supply_changed(test_power_supplies[TEST_USB]);
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return 0;
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}
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static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
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{
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return sprintf(buffer, "%s\n",
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map_get_key(map_ac_online, usb_online, "unknown"));
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}
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static int param_set_battery_status(const char *key,
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const struct kernel_param *kp)
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{
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battery_status = map_get_value(map_status, key, battery_status);
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signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
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return 0;
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}
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static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
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{
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return sprintf(buffer, "%s\n",
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map_get_key(map_ac_online, battery_status, "unknown"));
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}
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static int param_set_battery_health(const char *key,
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const struct kernel_param *kp)
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{
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battery_health = map_get_value(map_health, key, battery_health);
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signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
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return 0;
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}
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static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
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{
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return sprintf(buffer, "%s\n",
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map_get_key(map_ac_online, battery_health, "unknown"));
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}
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static int param_set_battery_present(const char *key,
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const struct kernel_param *kp)
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{
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battery_present = map_get_value(map_present, key, battery_present);
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signal_power_supply_changed(test_power_supplies[TEST_AC]);
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return 0;
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}
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static int param_get_battery_present(char *buffer,
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const struct kernel_param *kp)
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{
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return sprintf(buffer, "%s\n",
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map_get_key(map_ac_online, battery_present, "unknown"));
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}
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static int param_set_battery_technology(const char *key,
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const struct kernel_param *kp)
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{
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battery_technology = map_get_value(map_technology, key,
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battery_technology);
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signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
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return 0;
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}
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static int param_get_battery_technology(char *buffer,
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const struct kernel_param *kp)
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{
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return sprintf(buffer, "%s\n",
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map_get_key(map_ac_online, battery_technology,
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"unknown"));
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}
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static int param_set_battery_capacity(const char *key,
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const struct kernel_param *kp)
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{
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int tmp;
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if (1 != sscanf(key, "%d", &tmp))
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return -EINVAL;
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battery_capacity = tmp;
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signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
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return 0;
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}
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#define param_get_battery_capacity param_get_int
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static int param_set_battery_voltage(const char *key,
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const struct kernel_param *kp)
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{
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int tmp;
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if (1 != sscanf(key, "%d", &tmp))
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return -EINVAL;
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battery_voltage = tmp;
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signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
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return 0;
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}
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#define param_get_battery_voltage param_get_int
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static int param_set_battery_charge_counter(const char *key,
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const struct kernel_param *kp)
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{
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int tmp;
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if (1 != sscanf(key, "%d", &tmp))
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return -EINVAL;
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battery_charge_counter = tmp;
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signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
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return 0;
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}
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#define param_get_battery_charge_counter param_get_int
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static int param_set_battery_current(const char *key,
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const struct kernel_param *kp)
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{
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int tmp;
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if (1 != sscanf(key, "%d", &tmp))
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return -EINVAL;
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battery_current = tmp;
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signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
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return 0;
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}
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#define param_get_battery_current param_get_int
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static const struct kernel_param_ops param_ops_ac_online = {
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.set = param_set_ac_online,
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.get = param_get_ac_online,
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};
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static const struct kernel_param_ops param_ops_usb_online = {
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.set = param_set_usb_online,
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.get = param_get_usb_online,
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};
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static const struct kernel_param_ops param_ops_battery_status = {
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.set = param_set_battery_status,
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.get = param_get_battery_status,
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|
};
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|
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static const struct kernel_param_ops param_ops_battery_present = {
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.set = param_set_battery_present,
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.get = param_get_battery_present,
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|
};
|
|
|
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static const struct kernel_param_ops param_ops_battery_technology = {
|
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.set = param_set_battery_technology,
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.get = param_get_battery_technology,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_health = {
|
|
.set = param_set_battery_health,
|
|
.get = param_get_battery_health,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_capacity = {
|
|
.set = param_set_battery_capacity,
|
|
.get = param_get_battery_capacity,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_voltage = {
|
|
.set = param_set_battery_voltage,
|
|
.get = param_get_battery_voltage,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_charge_counter = {
|
|
.set = param_set_battery_charge_counter,
|
|
.get = param_get_battery_charge_counter,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_current = {
|
|
.set = param_set_battery_current,
|
|
.get = param_get_battery_current,
|
|
};
|
|
|
|
#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);
|
|
#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);
|
|
|
|
|
|
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_param(battery_charge_counter, battery_charge_counter, 0644);
|
|
MODULE_PARM_DESC(battery_charge_counter,
|
|
"battery charge counter (microampere-hours)");
|
|
|
|
module_param(battery_current, battery_current, 0644);
|
|
MODULE_PARM_DESC(battery_current, "battery current (milliampere)");
|
|
|
|
MODULE_DESCRIPTION("Power supply driver for testing");
|
|
MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
|
|
MODULE_LICENSE("GPL");
|