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591 lines
16 KiB
591 lines
16 KiB
// 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 <[email protected]> |
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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 <[email protected]> |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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strncpy(buf, key, MAX_KEYLENGTH); |
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buf[MAX_KEYLENGTH-1] = '\0'; |
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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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|
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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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|
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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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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, |
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}; |
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|
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static const struct kernel_param_ops param_ops_battery_health = { |
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.set = param_set_battery_health, |
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.get = param_get_battery_health, |
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}; |
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|
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static const struct kernel_param_ops param_ops_battery_capacity = { |
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.set = param_set_battery_capacity, |
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.get = param_get_battery_capacity, |
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}; |
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|
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static const struct kernel_param_ops param_ops_battery_voltage = { |
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.set = param_set_battery_voltage, |
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.get = param_get_battery_voltage, |
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}; |
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|
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static const struct kernel_param_ops param_ops_battery_charge_counter = { |
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.set = param_set_battery_charge_counter, |
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.get = param_get_battery_charge_counter, |
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}; |
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static const struct kernel_param_ops param_ops_battery_current = { |
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.set = param_set_battery_current, |
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.get = param_get_battery_current, |
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}; |
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|
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#define param_check_ac_online(name, p) __param_check(name, p, void); |
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#define param_check_usb_online(name, p) __param_check(name, p, void); |
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#define param_check_battery_status(name, p) __param_check(name, p, void); |
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#define param_check_battery_present(name, p) __param_check(name, p, void); |
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#define param_check_battery_technology(name, p) __param_check(name, p, void); |
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#define param_check_battery_health(name, p) __param_check(name, p, void); |
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#define param_check_battery_capacity(name, p) __param_check(name, p, void); |
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#define param_check_battery_voltage(name, p) __param_check(name, p, void); |
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#define param_check_battery_charge_counter(name, p) __param_check(name, p, void); |
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#define param_check_battery_current(name, p) __param_check(name, p, void); |
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module_param(ac_online, ac_online, 0644); |
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MODULE_PARM_DESC(ac_online, "AC charging state <on|off>"); |
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module_param(usb_online, usb_online, 0644); |
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MODULE_PARM_DESC(usb_online, "USB charging state <on|off>"); |
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module_param(battery_status, battery_status, 0644); |
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MODULE_PARM_DESC(battery_status, |
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"battery status <charging|discharging|not-charging|full>"); |
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module_param(battery_present, battery_present, 0644); |
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MODULE_PARM_DESC(battery_present, |
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"battery presence state <good|overheat|dead|overvoltage|failure>"); |
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module_param(battery_technology, battery_technology, 0644); |
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MODULE_PARM_DESC(battery_technology, |
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"battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>"); |
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module_param(battery_health, battery_health, 0644); |
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MODULE_PARM_DESC(battery_health, |
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"battery health state <good|overheat|dead|overvoltage|failure>"); |
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module_param(battery_capacity, battery_capacity, 0644); |
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MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)"); |
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module_param(battery_voltage, battery_voltage, 0644); |
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MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)"); |
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module_param(battery_charge_counter, battery_charge_counter, 0644); |
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MODULE_PARM_DESC(battery_charge_counter, |
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"battery charge counter (microampere-hours)"); |
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module_param(battery_current, battery_current, 0644); |
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MODULE_PARM_DESC(battery_current, "battery current (milliampere)"); |
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MODULE_DESCRIPTION("Power supply driver for testing"); |
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MODULE_AUTHOR("Anton Vorontsov <[email protected]>"); |
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MODULE_LICENSE("GPL");
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