power: Make test_power driver more dynamic.
In 2008 Masashi YOKOTA <yokota@pylone.jp> created the virtual battery driver found here: http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2 It found use out of tree, but was never merged upstream. Since then the test_power driver has been merged, which provides very similar functionality. This patch extends the test_power driver to be more dynamic at runtime, by merging portions of the Virtual Battery Driver by Masashi YOKOTA. With this patch, I can tweak the values in: /sys/module/test_power/parameters/* and watch the behavior of the gnome power managment daemon or other battery UI software. CC: Anton Vorontsov <cbouatmailru@gmail.com> CC: Akihiro MAEDA <sola.1980.a@gmail.com> CC: Masashi YOKOTA <yokota@pylone.jp> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This commit is contained in:
John Stultz
Anton Vorontsov
Родитель
73c244a8a5
Коммит
f17ef9b2da
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@ -3,6 +3,12 @@
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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@ -15,8 +21,12 @@
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#include <linux/delay.h>
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#include <linux/vermagic.h>
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static int test_power_ac_online = 1;
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static int test_power_battery_status = POWER_SUPPLY_STATUS_CHARGING;
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static int ac_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 test_power_get_ac_property(struct power_supply *psy,
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enum power_supply_property psp,
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@ -24,7 +34,7 @@ static int test_power_get_ac_property(struct power_supply *psy,
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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 = test_power_ac_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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@ -47,22 +57,30 @@ static int test_power_get_battery_property(struct power_supply *psy,
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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 = test_power_battery_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 = POWER_SUPPLY_HEALTH_GOOD;
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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 = POWER_SUPPLY_TECHNOLOGY_LION;
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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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val->intval = 50;
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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_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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@ -84,9 +102,11 @@ 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_EMPTY,
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POWER_SUPPLY_PROP_CHARGE_NOW,
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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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@ -118,6 +138,7 @@ static struct power_supply test_power_supplies[] = {
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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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@ -145,8 +166,8 @@ static void __exit test_power_exit(void)
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int i;
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/* Let's see how we handle changes... */
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test_power_ac_online = 0;
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test_power_battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
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ac_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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@ -158,6 +179,241 @@ static void __exit test_power_exit(void)
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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, "on" },
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{ 1, "off" },
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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 (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 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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power_supply_changed(&test_power_supplies[0]);
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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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strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
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return strlen(buffer);
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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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power_supply_changed(&test_power_supplies[1]);
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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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strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
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return strlen(buffer);
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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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power_supply_changed(&test_power_supplies[1]);
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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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strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
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return strlen(buffer);
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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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power_supply_changed(&test_power_supplies[0]);
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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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strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
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return strlen(buffer);
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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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power_supply_changed(&test_power_supplies[1]);
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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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strcpy(buffer,
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map_get_key(map_technology, battery_technology, "unknown"));
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return strlen(buffer);
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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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power_supply_changed(&test_power_supplies[1]);
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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 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 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 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 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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static 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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static 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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#define param_check_ac_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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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(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_DESCRIPTION("Power supply driver for testing");
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MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
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MODULE_LICENSE("GPL");
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