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17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/power_supply.h>
20#include <linux/errno.h>
21#include <linux/delay.h>
22#include <linux/vermagic.h>
23
24static int ac_online = 1;
25static int usb_online = 1;
26static int battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
27static int battery_health = POWER_SUPPLY_HEALTH_GOOD;
28static int battery_present = 1;
29static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION;
30static int battery_capacity = 50;
31static int battery_voltage = 3300;
32
33static bool module_initialized;
34
35static int test_power_get_ac_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_ONLINE:
41 val->intval = ac_online;
42 break;
43 default:
44 return -EINVAL;
45 }
46 return 0;
47}
48
49static int test_power_get_usb_property(struct power_supply *psy,
50 enum power_supply_property psp,
51 union power_supply_propval *val)
52{
53 switch (psp) {
54 case POWER_SUPPLY_PROP_ONLINE:
55 val->intval = usb_online;
56 break;
57 default:
58 return -EINVAL;
59 }
60 return 0;
61}
62
63static int test_power_get_battery_property(struct power_supply *psy,
64 enum power_supply_property psp,
65 union power_supply_propval *val)
66{
67 switch (psp) {
68 case POWER_SUPPLY_PROP_MODEL_NAME:
69 val->strval = "Test battery";
70 break;
71 case POWER_SUPPLY_PROP_MANUFACTURER:
72 val->strval = "Linux";
73 break;
74 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
75 val->strval = UTS_RELEASE;
76 break;
77 case POWER_SUPPLY_PROP_STATUS:
78 val->intval = battery_status;
79 break;
80 case POWER_SUPPLY_PROP_CHARGE_TYPE:
81 val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
82 break;
83 case POWER_SUPPLY_PROP_HEALTH:
84 val->intval = battery_health;
85 break;
86 case POWER_SUPPLY_PROP_PRESENT:
87 val->intval = battery_present;
88 break;
89 case POWER_SUPPLY_PROP_TECHNOLOGY:
90 val->intval = battery_technology;
91 break;
92 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
93 val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
94 break;
95 case POWER_SUPPLY_PROP_CAPACITY:
96 case POWER_SUPPLY_PROP_CHARGE_NOW:
97 val->intval = battery_capacity;
98 break;
99 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
100 case POWER_SUPPLY_PROP_CHARGE_FULL:
101 val->intval = 100;
102 break;
103 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
104 case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
105 val->intval = 3600;
106 break;
107 case POWER_SUPPLY_PROP_TEMP:
108 val->intval = 26;
109 break;
110 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
111 val->intval = battery_voltage;
112 break;
113 default:
114 pr_info("%s: some properties deliberately report errors.\n",
115 __func__);
116 return -EINVAL;
117 }
118 return 0;
119}
120
121static enum power_supply_property test_power_ac_props[] = {
122 POWER_SUPPLY_PROP_ONLINE,
123};
124
125static enum power_supply_property test_power_battery_props[] = {
126 POWER_SUPPLY_PROP_STATUS,
127 POWER_SUPPLY_PROP_CHARGE_TYPE,
128 POWER_SUPPLY_PROP_HEALTH,
129 POWER_SUPPLY_PROP_PRESENT,
130 POWER_SUPPLY_PROP_TECHNOLOGY,
131 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
132 POWER_SUPPLY_PROP_CHARGE_FULL,
133 POWER_SUPPLY_PROP_CHARGE_NOW,
134 POWER_SUPPLY_PROP_CAPACITY,
135 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
136 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
137 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
138 POWER_SUPPLY_PROP_MODEL_NAME,
139 POWER_SUPPLY_PROP_MANUFACTURER,
140 POWER_SUPPLY_PROP_SERIAL_NUMBER,
141 POWER_SUPPLY_PROP_TEMP,
142 POWER_SUPPLY_PROP_VOLTAGE_NOW,
143};
144
145static char *test_power_ac_supplied_to[] = {
146 "test_battery",
147};
148
149static struct power_supply test_power_supplies[] = {
150 {
151 .name = "test_ac",
152 .type = POWER_SUPPLY_TYPE_MAINS,
153 .supplied_to = test_power_ac_supplied_to,
154 .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
155 .properties = test_power_ac_props,
156 .num_properties = ARRAY_SIZE(test_power_ac_props),
157 .get_property = test_power_get_ac_property,
158 }, {
159 .name = "test_battery",
160 .type = POWER_SUPPLY_TYPE_BATTERY,
161 .properties = test_power_battery_props,
162 .num_properties = ARRAY_SIZE(test_power_battery_props),
163 .get_property = test_power_get_battery_property,
164 }, {
165 .name = "test_usb",
166 .type = POWER_SUPPLY_TYPE_USB,
167 .supplied_to = test_power_ac_supplied_to,
168 .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
169 .properties = test_power_ac_props,
170 .num_properties = ARRAY_SIZE(test_power_ac_props),
171 .get_property = test_power_get_usb_property,
172 },
173};
174
175
176static int __init test_power_init(void)
177{
178 int i;
179 int ret;
180
181 for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
182 ret = power_supply_register(NULL, &test_power_supplies[i]);
183 if (ret) {
184 pr_err("%s: failed to register %s\n", __func__,
185 test_power_supplies[i].name);
186 goto failed;
187 }
188 }
189
190 module_initialized = true;
191 return 0;
192failed:
193 while (--i >= 0)
194 power_supply_unregister(&test_power_supplies[i]);
195 return ret;
196}
197module_init(test_power_init);
198
199static void __exit test_power_exit(void)
200{
201 int i;
202
203
204 ac_online = 0;
205 usb_online = 0;
206 battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
207 for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
208 power_supply_changed(&test_power_supplies[i]);
209 pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
210 __func__);
211 ssleep(10);
212
213 for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
214 power_supply_unregister(&test_power_supplies[i]);
215
216 module_initialized = false;
217}
218module_exit(test_power_exit);
219
220
221
222#define MAX_KEYLENGTH 256
223struct battery_property_map {
224 int value;
225 char const *key;
226};
227
228static struct battery_property_map map_ac_online[] = {
229 { 0, "off" },
230 { 1, "on" },
231 { -1, NULL },
232};
233
234static struct battery_property_map map_status[] = {
235 { POWER_SUPPLY_STATUS_CHARGING, "charging" },
236 { POWER_SUPPLY_STATUS_DISCHARGING, "discharging" },
237 { POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" },
238 { POWER_SUPPLY_STATUS_FULL, "full" },
239 { -1, NULL },
240};
241
242static struct battery_property_map map_health[] = {
243 { POWER_SUPPLY_HEALTH_GOOD, "good" },
244 { POWER_SUPPLY_HEALTH_OVERHEAT, "overheat" },
245 { POWER_SUPPLY_HEALTH_DEAD, "dead" },
246 { POWER_SUPPLY_HEALTH_OVERVOLTAGE, "overvoltage" },
247 { POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure" },
248 { -1, NULL },
249};
250
251static struct battery_property_map map_present[] = {
252 { 0, "false" },
253 { 1, "true" },
254 { -1, NULL },
255};
256
257static struct battery_property_map map_technology[] = {
258 { POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" },
259 { POWER_SUPPLY_TECHNOLOGY_LION, "LION" },
260 { POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" },
261 { POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" },
262 { POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" },
263 { POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" },
264 { -1, NULL },
265};
266
267
268static int map_get_value(struct battery_property_map *map, const char *key,
269 int def_val)
270{
271 char buf[MAX_KEYLENGTH];
272 int cr;
273
274 strncpy(buf, key, MAX_KEYLENGTH);
275 buf[MAX_KEYLENGTH-1] = '\0';
276
277 cr = strnlen(buf, MAX_KEYLENGTH) - 1;
278 if (buf[cr] == '\n')
279 buf[cr] = '\0';
280
281 while (map->key) {
282 if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0)
283 return map->value;
284 map++;
285 }
286
287 return def_val;
288}
289
290
291static const char *map_get_key(struct battery_property_map *map, int value,
292 const char *def_key)
293{
294 while (map->key) {
295 if (map->value == value)
296 return map->key;
297 map++;
298 }
299
300 return def_key;
301}
302
303static inline void signal_power_supply_changed(struct power_supply *psy)
304{
305 if (module_initialized)
306 power_supply_changed(psy);
307}
308
309static int param_set_ac_online(const char *key, const struct kernel_param *kp)
310{
311 ac_online = map_get_value(map_ac_online, key, ac_online);
312 signal_power_supply_changed(&test_power_supplies[0]);
313 return 0;
314}
315
316static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
317{
318 strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
319 return strlen(buffer);
320}
321
322static int param_set_usb_online(const char *key, const struct kernel_param *kp)
323{
324 usb_online = map_get_value(map_ac_online, key, usb_online);
325 signal_power_supply_changed(&test_power_supplies[2]);
326 return 0;
327}
328
329static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
330{
331 strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown"));
332 return strlen(buffer);
333}
334
335static int param_set_battery_status(const char *key,
336 const struct kernel_param *kp)
337{
338 battery_status = map_get_value(map_status, key, battery_status);
339 signal_power_supply_changed(&test_power_supplies[1]);
340 return 0;
341}
342
343static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
344{
345 strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
346 return strlen(buffer);
347}
348
349static int param_set_battery_health(const char *key,
350 const struct kernel_param *kp)
351{
352 battery_health = map_get_value(map_health, key, battery_health);
353 signal_power_supply_changed(&test_power_supplies[1]);
354 return 0;
355}
356
357static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
358{
359 strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
360 return strlen(buffer);
361}
362
363static int param_set_battery_present(const char *key,
364 const struct kernel_param *kp)
365{
366 battery_present = map_get_value(map_present, key, battery_present);
367 signal_power_supply_changed(&test_power_supplies[0]);
368 return 0;
369}
370
371static int param_get_battery_present(char *buffer,
372 const struct kernel_param *kp)
373{
374 strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
375 return strlen(buffer);
376}
377
378static int param_set_battery_technology(const char *key,
379 const struct kernel_param *kp)
380{
381 battery_technology = map_get_value(map_technology, key,
382 battery_technology);
383 signal_power_supply_changed(&test_power_supplies[1]);
384 return 0;
385}
386
387static int param_get_battery_technology(char *buffer,
388 const struct kernel_param *kp)
389{
390 strcpy(buffer,
391 map_get_key(map_technology, battery_technology, "unknown"));
392 return strlen(buffer);
393}
394
395static int param_set_battery_capacity(const char *key,
396 const struct kernel_param *kp)
397{
398 int tmp;
399
400 if (1 != sscanf(key, "%d", &tmp))
401 return -EINVAL;
402
403 battery_capacity = tmp;
404 signal_power_supply_changed(&test_power_supplies[1]);
405 return 0;
406}
407
408#define param_get_battery_capacity param_get_int
409
410static int param_set_battery_voltage(const char *key,
411 const struct kernel_param *kp)
412{
413 int tmp;
414
415 if (1 != sscanf(key, "%d", &tmp))
416 return -EINVAL;
417
418 battery_voltage = tmp;
419 signal_power_supply_changed(&test_power_supplies[1]);
420 return 0;
421}
422
423#define param_get_battery_voltage param_get_int
424
425static struct kernel_param_ops param_ops_ac_online = {
426 .set = param_set_ac_online,
427 .get = param_get_ac_online,
428};
429
430static struct kernel_param_ops param_ops_usb_online = {
431 .set = param_set_usb_online,
432 .get = param_get_usb_online,
433};
434
435static struct kernel_param_ops param_ops_battery_status = {
436 .set = param_set_battery_status,
437 .get = param_get_battery_status,
438};
439
440static struct kernel_param_ops param_ops_battery_present = {
441 .set = param_set_battery_present,
442 .get = param_get_battery_present,
443};
444
445static struct kernel_param_ops param_ops_battery_technology = {
446 .set = param_set_battery_technology,
447 .get = param_get_battery_technology,
448};
449
450static struct kernel_param_ops param_ops_battery_health = {
451 .set = param_set_battery_health,
452 .get = param_get_battery_health,
453};
454
455static struct kernel_param_ops param_ops_battery_capacity = {
456 .set = param_set_battery_capacity,
457 .get = param_get_battery_capacity,
458};
459
460static struct kernel_param_ops param_ops_battery_voltage = {
461 .set = param_set_battery_voltage,
462 .get = param_get_battery_voltage,
463};
464
465#define param_check_ac_online(name, p) __param_check(name, p, void);
466#define param_check_usb_online(name, p) __param_check(name, p, void);
467#define param_check_battery_status(name, p) __param_check(name, p, void);
468#define param_check_battery_present(name, p) __param_check(name, p, void);
469#define param_check_battery_technology(name, p) __param_check(name, p, void);
470#define param_check_battery_health(name, p) __param_check(name, p, void);
471#define param_check_battery_capacity(name, p) __param_check(name, p, void);
472#define param_check_battery_voltage(name, p) __param_check(name, p, void);
473
474
475module_param(ac_online, ac_online, 0644);
476MODULE_PARM_DESC(ac_online, "AC charging state <on|off>");
477
478module_param(usb_online, usb_online, 0644);
479MODULE_PARM_DESC(usb_online, "USB charging state <on|off>");
480
481module_param(battery_status, battery_status, 0644);
482MODULE_PARM_DESC(battery_status,
483 "battery status <charging|discharging|not-charging|full>");
484
485module_param(battery_present, battery_present, 0644);
486MODULE_PARM_DESC(battery_present,
487 "battery presence state <good|overheat|dead|overvoltage|failure>");
488
489module_param(battery_technology, battery_technology, 0644);
490MODULE_PARM_DESC(battery_technology,
491 "battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>");
492
493module_param(battery_health, battery_health, 0644);
494MODULE_PARM_DESC(battery_health,
495 "battery health state <good|overheat|dead|overvoltage|failure>");
496
497module_param(battery_capacity, battery_capacity, 0644);
498MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");
499
500module_param(battery_voltage, battery_voltage, 0644);
501MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)");
502
503MODULE_DESCRIPTION("Power supply driver for testing");
504MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
505MODULE_LICENSE("GPL");
506
