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 | ||
f17ef9b2 | 24 | static int ac_online = 1; |
73847375 | 25 | static int usb_online = 1; |
f17ef9b2 JS |
26 | static int battery_status = POWER_SUPPLY_STATUS_DISCHARGING; |
27 | static int battery_health = POWER_SUPPLY_HEALTH_GOOD; | |
28 | static int battery_present = 1; /* true */ | |
29 | static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION; | |
30 | static int battery_capacity = 50; | |
85a392d4 | 31 | static int battery_voltage = 3300; |
a1e50fd4 | 32 | |
9239ebcf AG |
33 | static bool module_initialized; |
34 | ||
a1e50fd4 AV |
35 | static 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: | |
f17ef9b2 | 41 | val->intval = ac_online; |
a1e50fd4 AV |
42 | break; |
43 | default: | |
44 | return -EINVAL; | |
45 | } | |
46 | return 0; | |
47 | } | |
48 | ||
73847375 DES |
49 | static 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 | ||
a1e50fd4 AV |
63 | static 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: | |
f17ef9b2 | 78 | val->intval = battery_status; |
a1e50fd4 AV |
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: | |
f17ef9b2 JS |
84 | val->intval = battery_health; |
85 | break; | |
86 | case POWER_SUPPLY_PROP_PRESENT: | |
87 | val->intval = battery_present; | |
a1e50fd4 AV |
88 | break; |
89 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
f17ef9b2 | 90 | val->intval = battery_technology; |
a1e50fd4 AV |
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: | |
f17ef9b2 JS |
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; | |
a1e50fd4 AV |
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; | |
85a392d4 DES |
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; | |
a1e50fd4 AV |
113 | default: |
114 | pr_info("%s: some properties deliberately report errors.\n", | |
115 | __func__); | |
116 | return -EINVAL; | |
117 | } | |
118 | return 0; | |
119 | } | |
120 | ||
121 | static enum power_supply_property test_power_ac_props[] = { | |
122 | POWER_SUPPLY_PROP_ONLINE, | |
123 | }; | |
124 | ||
125 | static enum power_supply_property test_power_battery_props[] = { | |
126 | POWER_SUPPLY_PROP_STATUS, | |
127 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
128 | POWER_SUPPLY_PROP_HEALTH, | |
f17ef9b2 | 129 | POWER_SUPPLY_PROP_PRESENT, |
a1e50fd4 | 130 | POWER_SUPPLY_PROP_TECHNOLOGY, |
f17ef9b2 | 131 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, |
a1e50fd4 | 132 | POWER_SUPPLY_PROP_CHARGE_FULL, |
f17ef9b2 | 133 | POWER_SUPPLY_PROP_CHARGE_NOW, |
a1e50fd4 AV |
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, | |
85a392d4 DES |
141 | POWER_SUPPLY_PROP_TEMP, |
142 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
a1e50fd4 AV |
143 | }; |
144 | ||
145 | static char *test_power_ac_supplied_to[] = { | |
146 | "test_battery", | |
147 | }; | |
148 | ||
149 | static 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, | |
73847375 DES |
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, | |
a1e50fd4 AV |
172 | }, |
173 | }; | |
174 | ||
f17ef9b2 | 175 | |
a1e50fd4 AV |
176 | static 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 | ||
9239ebcf | 190 | module_initialized = true; |
a1e50fd4 AV |
191 | return 0; |
192 | failed: | |
193 | while (--i >= 0) | |
194 | power_supply_unregister(&test_power_supplies[i]); | |
195 | return ret; | |
196 | } | |
197 | module_init(test_power_init); | |
198 | ||
199 | static void __exit test_power_exit(void) | |
200 | { | |
201 | int i; | |
202 | ||
203 | /* Let's see how we handle changes... */ | |
f17ef9b2 | 204 | ac_online = 0; |
73847375 | 205 | usb_online = 0; |
f17ef9b2 | 206 | battery_status = POWER_SUPPLY_STATUS_DISCHARGING; |
a1e50fd4 AV |
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]); | |
9239ebcf AG |
215 | |
216 | module_initialized = false; | |
a1e50fd4 AV |
217 | } |
218 | module_exit(test_power_exit); | |
219 | ||
f17ef9b2 JS |
220 | |
221 | ||
222 | #define MAX_KEYLENGTH 256 | |
223 | struct battery_property_map { | |
224 | int value; | |
225 | char const *key; | |
226 | }; | |
227 | ||
228 | static struct battery_property_map map_ac_online[] = { | |
9239ebcf AG |
229 | { 0, "off" }, |
230 | { 1, "on" }, | |
f17ef9b2 JS |
231 | { -1, NULL }, |
232 | }; | |
233 | ||
234 | static 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 | ||
242 | static 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 | ||
251 | static struct battery_property_map map_present[] = { | |
252 | { 0, "false" }, | |
253 | { 1, "true" }, | |
254 | { -1, NULL }, | |
255 | }; | |
256 | ||
257 | static 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 | ||
268 | static 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 | ||
291 | static 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 | ||
9239ebcf AG |
303 | static inline void signal_power_supply_changed(struct power_supply *psy) |
304 | { | |
305 | if (module_initialized) | |
306 | power_supply_changed(psy); | |
307 | } | |
308 | ||
f17ef9b2 JS |
309 | static 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); | |
9239ebcf | 312 | signal_power_supply_changed(&test_power_supplies[0]); |
f17ef9b2 JS |
313 | return 0; |
314 | } | |
315 | ||
316 | static 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 | ||
73847375 DES |
322 | static 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); | |
9239ebcf | 325 | signal_power_supply_changed(&test_power_supplies[2]); |
73847375 DES |
326 | return 0; |
327 | } | |
328 | ||
329 | static 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 | ||
f17ef9b2 JS |
335 | static 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); | |
9239ebcf | 339 | signal_power_supply_changed(&test_power_supplies[1]); |
f17ef9b2 JS |
340 | return 0; |
341 | } | |
342 | ||
343 | static 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 | ||
349 | static 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); | |
9239ebcf | 353 | signal_power_supply_changed(&test_power_supplies[1]); |
f17ef9b2 JS |
354 | return 0; |
355 | } | |
356 | ||
357 | static 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 | ||
363 | static 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); | |
9239ebcf | 367 | signal_power_supply_changed(&test_power_supplies[0]); |
f17ef9b2 JS |
368 | return 0; |
369 | } | |
370 | ||
371 | static 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 | ||
378 | static 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); | |
9239ebcf | 383 | signal_power_supply_changed(&test_power_supplies[1]); |
f17ef9b2 JS |
384 | return 0; |
385 | } | |
386 | ||
387 | static 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 | ||
395 | static 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; | |
9239ebcf | 404 | signal_power_supply_changed(&test_power_supplies[1]); |
f17ef9b2 JS |
405 | return 0; |
406 | } | |
407 | ||
408 | #define param_get_battery_capacity param_get_int | |
409 | ||
85a392d4 DES |
410 | static 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; | |
9239ebcf | 419 | signal_power_supply_changed(&test_power_supplies[1]); |
85a392d4 DES |
420 | return 0; |
421 | } | |
422 | ||
423 | #define param_get_battery_voltage param_get_int | |
424 | ||
f17ef9b2 JS |
425 | static struct kernel_param_ops param_ops_ac_online = { |
426 | .set = param_set_ac_online, | |
427 | .get = param_get_ac_online, | |
428 | }; | |
429 | ||
73847375 DES |
430 | static struct kernel_param_ops param_ops_usb_online = { |
431 | .set = param_set_usb_online, | |
432 | .get = param_get_usb_online, | |
433 | }; | |
434 | ||
f17ef9b2 JS |
435 | static struct kernel_param_ops param_ops_battery_status = { |
436 | .set = param_set_battery_status, | |
437 | .get = param_get_battery_status, | |
438 | }; | |
439 | ||
440 | static struct kernel_param_ops param_ops_battery_present = { | |
441 | .set = param_set_battery_present, | |
442 | .get = param_get_battery_present, | |
443 | }; | |
444 | ||
445 | static struct kernel_param_ops param_ops_battery_technology = { | |
446 | .set = param_set_battery_technology, | |
447 | .get = param_get_battery_technology, | |
448 | }; | |
449 | ||
450 | static struct kernel_param_ops param_ops_battery_health = { | |
451 | .set = param_set_battery_health, | |
452 | .get = param_get_battery_health, | |
453 | }; | |
454 | ||
455 | static struct kernel_param_ops param_ops_battery_capacity = { | |
456 | .set = param_set_battery_capacity, | |
457 | .get = param_get_battery_capacity, | |
458 | }; | |
459 | ||
85a392d4 DES |
460 | static struct kernel_param_ops param_ops_battery_voltage = { |
461 | .set = param_set_battery_voltage, | |
462 | .get = param_get_battery_voltage, | |
463 | }; | |
f17ef9b2 JS |
464 | |
465 | #define param_check_ac_online(name, p) __param_check(name, p, void); | |
73847375 | 466 | #define param_check_usb_online(name, p) __param_check(name, p, void); |
f17ef9b2 JS |
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); | |
85a392d4 | 472 | #define param_check_battery_voltage(name, p) __param_check(name, p, void); |
f17ef9b2 JS |
473 | |
474 | ||
475 | module_param(ac_online, ac_online, 0644); | |
476 | MODULE_PARM_DESC(ac_online, "AC charging state <on|off>"); | |
477 | ||
73847375 DES |
478 | module_param(usb_online, usb_online, 0644); |
479 | MODULE_PARM_DESC(usb_online, "USB charging state <on|off>"); | |
480 | ||
f17ef9b2 JS |
481 | module_param(battery_status, battery_status, 0644); |
482 | MODULE_PARM_DESC(battery_status, | |
483 | "battery status <charging|discharging|not-charging|full>"); | |
484 | ||
485 | module_param(battery_present, battery_present, 0644); | |
486 | MODULE_PARM_DESC(battery_present, | |
487 | "battery presence state <good|overheat|dead|overvoltage|failure>"); | |
488 | ||
489 | module_param(battery_technology, battery_technology, 0644); | |
490 | MODULE_PARM_DESC(battery_technology, | |
491 | "battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>"); | |
492 | ||
493 | module_param(battery_health, battery_health, 0644); | |
494 | MODULE_PARM_DESC(battery_health, | |
495 | "battery health state <good|overheat|dead|overvoltage|failure>"); | |
496 | ||
497 | module_param(battery_capacity, battery_capacity, 0644); | |
498 | MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)"); | |
499 | ||
85a392d4 DES |
500 | module_param(battery_voltage, battery_voltage, 0644); |
501 | MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)"); | |
f17ef9b2 | 502 | |
a1e50fd4 AV |
503 | MODULE_DESCRIPTION("Power supply driver for testing"); |
504 | MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>"); | |
505 | MODULE_LICENSE("GPL"); |