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11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/power_supply.h>
14#include <linux/errno.h>
15#include <linux/delay.h>
16#include <linux/vermagic.h>
17
18static int test_power_ac_online = 1;
19static int test_power_battery_status = POWER_SUPPLY_STATUS_CHARGING;
20
21static int test_power_get_ac_property(struct power_supply *psy,
22 enum power_supply_property psp,
23 union power_supply_propval *val)
24{
25 switch (psp) {
26 case POWER_SUPPLY_PROP_ONLINE:
27 val->intval = test_power_ac_online;
28 break;
29 default:
30 return -EINVAL;
31 }
32 return 0;
33}
34
35static int test_power_get_battery_property(struct power_supply *psy,
36 enum power_supply_property psp,
37 union power_supply_propval *val)
38{
39 switch (psp) {
40 case POWER_SUPPLY_PROP_MODEL_NAME:
41 val->strval = "Test battery";
42 break;
43 case POWER_SUPPLY_PROP_MANUFACTURER:
44 val->strval = "Linux";
45 break;
46 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
47 val->strval = UTS_RELEASE;
48 break;
49 case POWER_SUPPLY_PROP_STATUS:
50 val->intval = test_power_battery_status;
51 break;
52 case POWER_SUPPLY_PROP_CHARGE_TYPE:
53 val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
54 break;
55 case POWER_SUPPLY_PROP_HEALTH:
56 val->intval = POWER_SUPPLY_HEALTH_GOOD;
57 break;
58 case POWER_SUPPLY_PROP_TECHNOLOGY:
59 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
60 break;
61 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
62 val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
63 break;
64 case POWER_SUPPLY_PROP_CAPACITY:
65 val->intval = 50;
66 break;
67 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
68 case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
69 val->intval = 3600;
70 break;
71 default:
72 pr_info("%s: some properties deliberately report errors.\n",
73 __func__);
74 return -EINVAL;
75 }
76 return 0;
77}
78
79static enum power_supply_property test_power_ac_props[] = {
80 POWER_SUPPLY_PROP_ONLINE,
81};
82
83static enum power_supply_property test_power_battery_props[] = {
84 POWER_SUPPLY_PROP_STATUS,
85 POWER_SUPPLY_PROP_CHARGE_TYPE,
86 POWER_SUPPLY_PROP_HEALTH,
87 POWER_SUPPLY_PROP_TECHNOLOGY,
88 POWER_SUPPLY_PROP_CHARGE_FULL,
89 POWER_SUPPLY_PROP_CHARGE_EMPTY,
90 POWER_SUPPLY_PROP_CAPACITY,
91 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
92 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
93 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
94 POWER_SUPPLY_PROP_MODEL_NAME,
95 POWER_SUPPLY_PROP_MANUFACTURER,
96 POWER_SUPPLY_PROP_SERIAL_NUMBER,
97};
98
99static char *test_power_ac_supplied_to[] = {
100 "test_battery",
101};
102
103static struct power_supply test_power_supplies[] = {
104 {
105 .name = "test_ac",
106 .type = POWER_SUPPLY_TYPE_MAINS,
107 .supplied_to = test_power_ac_supplied_to,
108 .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
109 .properties = test_power_ac_props,
110 .num_properties = ARRAY_SIZE(test_power_ac_props),
111 .get_property = test_power_get_ac_property,
112 }, {
113 .name = "test_battery",
114 .type = POWER_SUPPLY_TYPE_BATTERY,
115 .properties = test_power_battery_props,
116 .num_properties = ARRAY_SIZE(test_power_battery_props),
117 .get_property = test_power_get_battery_property,
118 },
119};
120
121static int __init test_power_init(void)
122{
123 int i;
124 int ret;
125
126 for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
127 ret = power_supply_register(NULL, &test_power_supplies[i]);
128 if (ret) {
129 pr_err("%s: failed to register %s\n", __func__,
130 test_power_supplies[i].name);
131 goto failed;
132 }
133 }
134
135 return 0;
136failed:
137 while (--i >= 0)
138 power_supply_unregister(&test_power_supplies[i]);
139 return ret;
140}
141module_init(test_power_init);
142
143static void __exit test_power_exit(void)
144{
145 int i;
146
147
148 test_power_ac_online = 0;
149 test_power_battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
150 for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
151 power_supply_changed(&test_power_supplies[i]);
152 pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
153 __func__);
154 ssleep(10);
155
156 for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
157 power_supply_unregister(&test_power_supplies[i]);
158}
159module_exit(test_power_exit);
160
161MODULE_DESCRIPTION("Power supply driver for testing");
162MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
163MODULE_LICENSE("GPL");
164
