Commit | Line | Data |
---|---|---|
a1e50fd4 AV |
1 | /* |
2 | * Power supply driver for testing. | |
3 | * | |
4 | * Copyright 2010 Anton Vorontsov <cbouatmailru@gmail.com> | |
5 | * | |
f17ef9b2 JS |
6 | * Dynamic module parameter code from the Virtual Battery Driver |
7 | * Copyright (C) 2008 Pylone, Inc. | |
8 | * By: Masashi YOKOTA <yokota@pylone.jp> | |
9 | * Originally found here: | |
10 | * http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2 | |
11 | * | |
a1e50fd4 AV |
12 | * This program is free software; you can redistribute it and/or modify |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | */ | |
16 | ||
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 | ||
a30067bb KK |
24 | enum test_power_id { |
25 | TEST_AC, | |
26 | TEST_BATTERY, | |
27 | TEST_USB, | |
28 | TEST_POWER_NUM, | |
29 | }; | |
30 | ||
f17ef9b2 | 31 | static int ac_online = 1; |
73847375 | 32 | static int usb_online = 1; |
f17ef9b2 JS |
33 | static int battery_status = POWER_SUPPLY_STATUS_DISCHARGING; |
34 | static int battery_health = POWER_SUPPLY_HEALTH_GOOD; | |
35 | static int battery_present = 1; /* true */ | |
36 | static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION; | |
37 | static int battery_capacity = 50; | |
85a392d4 | 38 | static int battery_voltage = 3300; |
a1e50fd4 | 39 | |
9239ebcf AG |
40 | static bool module_initialized; |
41 | ||
a1e50fd4 AV |
42 | static int test_power_get_ac_property(struct power_supply *psy, |
43 | enum power_supply_property psp, | |
44 | union power_supply_propval *val) | |
45 | { | |
46 | switch (psp) { | |
47 | case POWER_SUPPLY_PROP_ONLINE: | |
f17ef9b2 | 48 | val->intval = ac_online; |
a1e50fd4 AV |
49 | break; |
50 | default: | |
51 | return -EINVAL; | |
52 | } | |
53 | return 0; | |
54 | } | |
55 | ||
73847375 DES |
56 | static int test_power_get_usb_property(struct power_supply *psy, |
57 | enum power_supply_property psp, | |
58 | union power_supply_propval *val) | |
59 | { | |
60 | switch (psp) { | |
61 | case POWER_SUPPLY_PROP_ONLINE: | |
62 | val->intval = usb_online; | |
63 | break; | |
64 | default: | |
65 | return -EINVAL; | |
66 | } | |
67 | return 0; | |
68 | } | |
69 | ||
a1e50fd4 AV |
70 | static int test_power_get_battery_property(struct power_supply *psy, |
71 | enum power_supply_property psp, | |
72 | union power_supply_propval *val) | |
73 | { | |
74 | switch (psp) { | |
75 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
76 | val->strval = "Test battery"; | |
77 | break; | |
78 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
79 | val->strval = "Linux"; | |
80 | break; | |
81 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: | |
82 | val->strval = UTS_RELEASE; | |
83 | break; | |
84 | case POWER_SUPPLY_PROP_STATUS: | |
f17ef9b2 | 85 | val->intval = battery_status; |
a1e50fd4 AV |
86 | break; |
87 | case POWER_SUPPLY_PROP_CHARGE_TYPE: | |
88 | val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST; | |
89 | break; | |
90 | case POWER_SUPPLY_PROP_HEALTH: | |
f17ef9b2 JS |
91 | val->intval = battery_health; |
92 | break; | |
93 | case POWER_SUPPLY_PROP_PRESENT: | |
94 | val->intval = battery_present; | |
a1e50fd4 AV |
95 | break; |
96 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
f17ef9b2 | 97 | val->intval = battery_technology; |
a1e50fd4 AV |
98 | break; |
99 | case POWER_SUPPLY_PROP_CAPACITY_LEVEL: | |
100 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
101 | break; | |
102 | case POWER_SUPPLY_PROP_CAPACITY: | |
f17ef9b2 JS |
103 | case POWER_SUPPLY_PROP_CHARGE_NOW: |
104 | val->intval = battery_capacity; | |
105 | break; | |
106 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
107 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
108 | val->intval = 100; | |
a1e50fd4 AV |
109 | break; |
110 | case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: | |
111 | case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: | |
112 | val->intval = 3600; | |
113 | break; | |
85a392d4 DES |
114 | case POWER_SUPPLY_PROP_TEMP: |
115 | val->intval = 26; | |
116 | break; | |
117 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
118 | val->intval = battery_voltage; | |
119 | break; | |
a1e50fd4 AV |
120 | default: |
121 | pr_info("%s: some properties deliberately report errors.\n", | |
122 | __func__); | |
123 | return -EINVAL; | |
124 | } | |
125 | return 0; | |
126 | } | |
127 | ||
128 | static enum power_supply_property test_power_ac_props[] = { | |
129 | POWER_SUPPLY_PROP_ONLINE, | |
130 | }; | |
131 | ||
132 | static enum power_supply_property test_power_battery_props[] = { | |
133 | POWER_SUPPLY_PROP_STATUS, | |
134 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
135 | POWER_SUPPLY_PROP_HEALTH, | |
f17ef9b2 | 136 | POWER_SUPPLY_PROP_PRESENT, |
a1e50fd4 | 137 | POWER_SUPPLY_PROP_TECHNOLOGY, |
f17ef9b2 | 138 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, |
a1e50fd4 | 139 | POWER_SUPPLY_PROP_CHARGE_FULL, |
f17ef9b2 | 140 | POWER_SUPPLY_PROP_CHARGE_NOW, |
a1e50fd4 AV |
141 | POWER_SUPPLY_PROP_CAPACITY, |
142 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, | |
143 | POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, | |
144 | POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, | |
145 | POWER_SUPPLY_PROP_MODEL_NAME, | |
146 | POWER_SUPPLY_PROP_MANUFACTURER, | |
147 | POWER_SUPPLY_PROP_SERIAL_NUMBER, | |
85a392d4 DES |
148 | POWER_SUPPLY_PROP_TEMP, |
149 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
a1e50fd4 AV |
150 | }; |
151 | ||
152 | static char *test_power_ac_supplied_to[] = { | |
153 | "test_battery", | |
154 | }; | |
155 | ||
156 | static struct power_supply test_power_supplies[] = { | |
a30067bb | 157 | [TEST_AC] = { |
a1e50fd4 AV |
158 | .name = "test_ac", |
159 | .type = POWER_SUPPLY_TYPE_MAINS, | |
a1e50fd4 AV |
160 | .properties = test_power_ac_props, |
161 | .num_properties = ARRAY_SIZE(test_power_ac_props), | |
162 | .get_property = test_power_get_ac_property, | |
a30067bb KK |
163 | }, |
164 | [TEST_BATTERY] = { | |
a1e50fd4 AV |
165 | .name = "test_battery", |
166 | .type = POWER_SUPPLY_TYPE_BATTERY, | |
167 | .properties = test_power_battery_props, | |
168 | .num_properties = ARRAY_SIZE(test_power_battery_props), | |
169 | .get_property = test_power_get_battery_property, | |
a30067bb KK |
170 | }, |
171 | [TEST_USB] = { | |
73847375 DES |
172 | .name = "test_usb", |
173 | .type = POWER_SUPPLY_TYPE_USB, | |
73847375 DES |
174 | .properties = test_power_ac_props, |
175 | .num_properties = ARRAY_SIZE(test_power_ac_props), | |
176 | .get_property = test_power_get_usb_property, | |
a1e50fd4 AV |
177 | }, |
178 | }; | |
179 | ||
2dc9215d KK |
180 | static const struct power_supply_config test_power_configs[] = { |
181 | { | |
182 | /* test_ac */ | |
183 | .supplied_to = test_power_ac_supplied_to, | |
184 | .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to), | |
185 | }, { | |
186 | /* test_battery */ | |
187 | }, { | |
188 | /* test_usb */ | |
189 | .supplied_to = test_power_ac_supplied_to, | |
190 | .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to), | |
191 | }, | |
192 | }; | |
f17ef9b2 | 193 | |
a1e50fd4 AV |
194 | static int __init test_power_init(void) |
195 | { | |
196 | int i; | |
197 | int ret; | |
198 | ||
a30067bb | 199 | BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_supplies)); |
2dc9215d | 200 | BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_configs)); |
a30067bb | 201 | |
a1e50fd4 | 202 | for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) { |
2dc9215d KK |
203 | ret = power_supply_register(NULL, &test_power_supplies[i], |
204 | &test_power_configs[i]); | |
a1e50fd4 AV |
205 | if (ret) { |
206 | pr_err("%s: failed to register %s\n", __func__, | |
207 | test_power_supplies[i].name); | |
208 | goto failed; | |
209 | } | |
210 | } | |
211 | ||
9239ebcf | 212 | module_initialized = true; |
a1e50fd4 AV |
213 | return 0; |
214 | failed: | |
215 | while (--i >= 0) | |
216 | power_supply_unregister(&test_power_supplies[i]); | |
217 | return ret; | |
218 | } | |
219 | module_init(test_power_init); | |
220 | ||
221 | static void __exit test_power_exit(void) | |
222 | { | |
223 | int i; | |
224 | ||
225 | /* Let's see how we handle changes... */ | |
f17ef9b2 | 226 | ac_online = 0; |
73847375 | 227 | usb_online = 0; |
f17ef9b2 | 228 | battery_status = POWER_SUPPLY_STATUS_DISCHARGING; |
a1e50fd4 AV |
229 | for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) |
230 | power_supply_changed(&test_power_supplies[i]); | |
231 | pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n", | |
232 | __func__); | |
233 | ssleep(10); | |
234 | ||
235 | for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) | |
236 | power_supply_unregister(&test_power_supplies[i]); | |
9239ebcf AG |
237 | |
238 | module_initialized = false; | |
a1e50fd4 AV |
239 | } |
240 | module_exit(test_power_exit); | |
241 | ||
f17ef9b2 JS |
242 | |
243 | ||
244 | #define MAX_KEYLENGTH 256 | |
245 | struct battery_property_map { | |
246 | int value; | |
247 | char const *key; | |
248 | }; | |
249 | ||
250 | static struct battery_property_map map_ac_online[] = { | |
9239ebcf AG |
251 | { 0, "off" }, |
252 | { 1, "on" }, | |
f17ef9b2 JS |
253 | { -1, NULL }, |
254 | }; | |
255 | ||
256 | static struct battery_property_map map_status[] = { | |
257 | { POWER_SUPPLY_STATUS_CHARGING, "charging" }, | |
258 | { POWER_SUPPLY_STATUS_DISCHARGING, "discharging" }, | |
259 | { POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" }, | |
260 | { POWER_SUPPLY_STATUS_FULL, "full" }, | |
261 | { -1, NULL }, | |
262 | }; | |
263 | ||
264 | static struct battery_property_map map_health[] = { | |
265 | { POWER_SUPPLY_HEALTH_GOOD, "good" }, | |
266 | { POWER_SUPPLY_HEALTH_OVERHEAT, "overheat" }, | |
267 | { POWER_SUPPLY_HEALTH_DEAD, "dead" }, | |
268 | { POWER_SUPPLY_HEALTH_OVERVOLTAGE, "overvoltage" }, | |
269 | { POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure" }, | |
270 | { -1, NULL }, | |
271 | }; | |
272 | ||
273 | static struct battery_property_map map_present[] = { | |
274 | { 0, "false" }, | |
275 | { 1, "true" }, | |
276 | { -1, NULL }, | |
277 | }; | |
278 | ||
279 | static struct battery_property_map map_technology[] = { | |
280 | { POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" }, | |
281 | { POWER_SUPPLY_TECHNOLOGY_LION, "LION" }, | |
282 | { POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" }, | |
283 | { POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" }, | |
284 | { POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" }, | |
285 | { POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" }, | |
286 | { -1, NULL }, | |
287 | }; | |
288 | ||
289 | ||
290 | static int map_get_value(struct battery_property_map *map, const char *key, | |
291 | int def_val) | |
292 | { | |
293 | char buf[MAX_KEYLENGTH]; | |
294 | int cr; | |
295 | ||
296 | strncpy(buf, key, MAX_KEYLENGTH); | |
297 | buf[MAX_KEYLENGTH-1] = '\0'; | |
298 | ||
299 | cr = strnlen(buf, MAX_KEYLENGTH) - 1; | |
300 | if (buf[cr] == '\n') | |
301 | buf[cr] = '\0'; | |
302 | ||
303 | while (map->key) { | |
304 | if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0) | |
305 | return map->value; | |
306 | map++; | |
307 | } | |
308 | ||
309 | return def_val; | |
310 | } | |
311 | ||
312 | ||
313 | static const char *map_get_key(struct battery_property_map *map, int value, | |
314 | const char *def_key) | |
315 | { | |
316 | while (map->key) { | |
317 | if (map->value == value) | |
318 | return map->key; | |
319 | map++; | |
320 | } | |
321 | ||
322 | return def_key; | |
323 | } | |
324 | ||
9239ebcf AG |
325 | static inline void signal_power_supply_changed(struct power_supply *psy) |
326 | { | |
327 | if (module_initialized) | |
328 | power_supply_changed(psy); | |
329 | } | |
330 | ||
f17ef9b2 JS |
331 | static int param_set_ac_online(const char *key, const struct kernel_param *kp) |
332 | { | |
333 | ac_online = map_get_value(map_ac_online, key, ac_online); | |
a30067bb | 334 | signal_power_supply_changed(&test_power_supplies[TEST_AC]); |
f17ef9b2 JS |
335 | return 0; |
336 | } | |
337 | ||
338 | static int param_get_ac_online(char *buffer, const struct kernel_param *kp) | |
339 | { | |
340 | strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown")); | |
341 | return strlen(buffer); | |
342 | } | |
343 | ||
73847375 DES |
344 | static int param_set_usb_online(const char *key, const struct kernel_param *kp) |
345 | { | |
346 | usb_online = map_get_value(map_ac_online, key, usb_online); | |
a30067bb | 347 | signal_power_supply_changed(&test_power_supplies[TEST_USB]); |
73847375 DES |
348 | return 0; |
349 | } | |
350 | ||
351 | static int param_get_usb_online(char *buffer, const struct kernel_param *kp) | |
352 | { | |
353 | strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown")); | |
354 | return strlen(buffer); | |
355 | } | |
356 | ||
f17ef9b2 JS |
357 | static int param_set_battery_status(const char *key, |
358 | const struct kernel_param *kp) | |
359 | { | |
360 | battery_status = map_get_value(map_status, key, battery_status); | |
a30067bb | 361 | signal_power_supply_changed(&test_power_supplies[TEST_BATTERY]); |
f17ef9b2 JS |
362 | return 0; |
363 | } | |
364 | ||
365 | static int param_get_battery_status(char *buffer, const struct kernel_param *kp) | |
366 | { | |
367 | strcpy(buffer, map_get_key(map_status, battery_status, "unknown")); | |
368 | return strlen(buffer); | |
369 | } | |
370 | ||
371 | static int param_set_battery_health(const char *key, | |
372 | const struct kernel_param *kp) | |
373 | { | |
374 | battery_health = map_get_value(map_health, key, battery_health); | |
a30067bb | 375 | signal_power_supply_changed(&test_power_supplies[TEST_BATTERY]); |
f17ef9b2 JS |
376 | return 0; |
377 | } | |
378 | ||
379 | static int param_get_battery_health(char *buffer, const struct kernel_param *kp) | |
380 | { | |
381 | strcpy(buffer, map_get_key(map_health, battery_health, "unknown")); | |
382 | return strlen(buffer); | |
383 | } | |
384 | ||
385 | static int param_set_battery_present(const char *key, | |
386 | const struct kernel_param *kp) | |
387 | { | |
388 | battery_present = map_get_value(map_present, key, battery_present); | |
a30067bb | 389 | signal_power_supply_changed(&test_power_supplies[TEST_AC]); |
f17ef9b2 JS |
390 | return 0; |
391 | } | |
392 | ||
393 | static int param_get_battery_present(char *buffer, | |
394 | const struct kernel_param *kp) | |
395 | { | |
396 | strcpy(buffer, map_get_key(map_present, battery_present, "unknown")); | |
397 | return strlen(buffer); | |
398 | } | |
399 | ||
400 | static int param_set_battery_technology(const char *key, | |
401 | const struct kernel_param *kp) | |
402 | { | |
403 | battery_technology = map_get_value(map_technology, key, | |
404 | battery_technology); | |
a30067bb | 405 | signal_power_supply_changed(&test_power_supplies[TEST_BATTERY]); |
f17ef9b2 JS |
406 | return 0; |
407 | } | |
408 | ||
409 | static int param_get_battery_technology(char *buffer, | |
410 | const struct kernel_param *kp) | |
411 | { | |
412 | strcpy(buffer, | |
413 | map_get_key(map_technology, battery_technology, "unknown")); | |
414 | return strlen(buffer); | |
415 | } | |
416 | ||
417 | static int param_set_battery_capacity(const char *key, | |
418 | const struct kernel_param *kp) | |
419 | { | |
420 | int tmp; | |
421 | ||
422 | if (1 != sscanf(key, "%d", &tmp)) | |
423 | return -EINVAL; | |
424 | ||
425 | battery_capacity = tmp; | |
a30067bb | 426 | signal_power_supply_changed(&test_power_supplies[TEST_BATTERY]); |
f17ef9b2 JS |
427 | return 0; |
428 | } | |
429 | ||
430 | #define param_get_battery_capacity param_get_int | |
431 | ||
85a392d4 DES |
432 | static int param_set_battery_voltage(const char *key, |
433 | const struct kernel_param *kp) | |
434 | { | |
435 | int tmp; | |
436 | ||
437 | if (1 != sscanf(key, "%d", &tmp)) | |
438 | return -EINVAL; | |
439 | ||
440 | battery_voltage = tmp; | |
a30067bb | 441 | signal_power_supply_changed(&test_power_supplies[TEST_BATTERY]); |
85a392d4 DES |
442 | return 0; |
443 | } | |
444 | ||
445 | #define param_get_battery_voltage param_get_int | |
446 | ||
f17ef9b2 JS |
447 | static struct kernel_param_ops param_ops_ac_online = { |
448 | .set = param_set_ac_online, | |
449 | .get = param_get_ac_online, | |
450 | }; | |
451 | ||
73847375 DES |
452 | static struct kernel_param_ops param_ops_usb_online = { |
453 | .set = param_set_usb_online, | |
454 | .get = param_get_usb_online, | |
455 | }; | |
456 | ||
f17ef9b2 JS |
457 | static struct kernel_param_ops param_ops_battery_status = { |
458 | .set = param_set_battery_status, | |
459 | .get = param_get_battery_status, | |
460 | }; | |
461 | ||
462 | static struct kernel_param_ops param_ops_battery_present = { | |
463 | .set = param_set_battery_present, | |
464 | .get = param_get_battery_present, | |
465 | }; | |
466 | ||
467 | static struct kernel_param_ops param_ops_battery_technology = { | |
468 | .set = param_set_battery_technology, | |
469 | .get = param_get_battery_technology, | |
470 | }; | |
471 | ||
472 | static struct kernel_param_ops param_ops_battery_health = { | |
473 | .set = param_set_battery_health, | |
474 | .get = param_get_battery_health, | |
475 | }; | |
476 | ||
477 | static struct kernel_param_ops param_ops_battery_capacity = { | |
478 | .set = param_set_battery_capacity, | |
479 | .get = param_get_battery_capacity, | |
480 | }; | |
481 | ||
85a392d4 DES |
482 | static struct kernel_param_ops param_ops_battery_voltage = { |
483 | .set = param_set_battery_voltage, | |
484 | .get = param_get_battery_voltage, | |
485 | }; | |
f17ef9b2 JS |
486 | |
487 | #define param_check_ac_online(name, p) __param_check(name, p, void); | |
73847375 | 488 | #define param_check_usb_online(name, p) __param_check(name, p, void); |
f17ef9b2 JS |
489 | #define param_check_battery_status(name, p) __param_check(name, p, void); |
490 | #define param_check_battery_present(name, p) __param_check(name, p, void); | |
491 | #define param_check_battery_technology(name, p) __param_check(name, p, void); | |
492 | #define param_check_battery_health(name, p) __param_check(name, p, void); | |
493 | #define param_check_battery_capacity(name, p) __param_check(name, p, void); | |
85a392d4 | 494 | #define param_check_battery_voltage(name, p) __param_check(name, p, void); |
f17ef9b2 JS |
495 | |
496 | ||
497 | module_param(ac_online, ac_online, 0644); | |
498 | MODULE_PARM_DESC(ac_online, "AC charging state <on|off>"); | |
499 | ||
73847375 DES |
500 | module_param(usb_online, usb_online, 0644); |
501 | MODULE_PARM_DESC(usb_online, "USB charging state <on|off>"); | |
502 | ||
f17ef9b2 JS |
503 | module_param(battery_status, battery_status, 0644); |
504 | MODULE_PARM_DESC(battery_status, | |
505 | "battery status <charging|discharging|not-charging|full>"); | |
506 | ||
507 | module_param(battery_present, battery_present, 0644); | |
508 | MODULE_PARM_DESC(battery_present, | |
509 | "battery presence state <good|overheat|dead|overvoltage|failure>"); | |
510 | ||
511 | module_param(battery_technology, battery_technology, 0644); | |
512 | MODULE_PARM_DESC(battery_technology, | |
513 | "battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>"); | |
514 | ||
515 | module_param(battery_health, battery_health, 0644); | |
516 | MODULE_PARM_DESC(battery_health, | |
517 | "battery health state <good|overheat|dead|overvoltage|failure>"); | |
518 | ||
519 | module_param(battery_capacity, battery_capacity, 0644); | |
520 | MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)"); | |
521 | ||
85a392d4 DES |
522 | module_param(battery_voltage, battery_voltage, 0644); |
523 | MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)"); | |
f17ef9b2 | 524 | |
a1e50fd4 AV |
525 | MODULE_DESCRIPTION("Power supply driver for testing"); |
526 | MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>"); | |
527 | MODULE_LICENSE("GPL"); |