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 JS |
24 | static int ac_online = 1; |
25 | static int battery_status = POWER_SUPPLY_STATUS_DISCHARGING; | |
26 | static int battery_health = POWER_SUPPLY_HEALTH_GOOD; | |
27 | static int battery_present = 1; /* true */ | |
28 | static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION; | |
29 | static int battery_capacity = 50; | |
a1e50fd4 AV |
30 | |
31 | static int test_power_get_ac_property(struct power_supply *psy, | |
32 | enum power_supply_property psp, | |
33 | union power_supply_propval *val) | |
34 | { | |
35 | switch (psp) { | |
36 | case POWER_SUPPLY_PROP_ONLINE: | |
f17ef9b2 | 37 | val->intval = ac_online; |
a1e50fd4 AV |
38 | break; |
39 | default: | |
40 | return -EINVAL; | |
41 | } | |
42 | return 0; | |
43 | } | |
44 | ||
45 | static int test_power_get_battery_property(struct power_supply *psy, | |
46 | enum power_supply_property psp, | |
47 | union power_supply_propval *val) | |
48 | { | |
49 | switch (psp) { | |
50 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
51 | val->strval = "Test battery"; | |
52 | break; | |
53 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
54 | val->strval = "Linux"; | |
55 | break; | |
56 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: | |
57 | val->strval = UTS_RELEASE; | |
58 | break; | |
59 | case POWER_SUPPLY_PROP_STATUS: | |
f17ef9b2 | 60 | val->intval = battery_status; |
a1e50fd4 AV |
61 | break; |
62 | case POWER_SUPPLY_PROP_CHARGE_TYPE: | |
63 | val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST; | |
64 | break; | |
65 | case POWER_SUPPLY_PROP_HEALTH: | |
f17ef9b2 JS |
66 | val->intval = battery_health; |
67 | break; | |
68 | case POWER_SUPPLY_PROP_PRESENT: | |
69 | val->intval = battery_present; | |
a1e50fd4 AV |
70 | break; |
71 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
f17ef9b2 | 72 | val->intval = battery_technology; |
a1e50fd4 AV |
73 | break; |
74 | case POWER_SUPPLY_PROP_CAPACITY_LEVEL: | |
75 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
76 | break; | |
77 | case POWER_SUPPLY_PROP_CAPACITY: | |
f17ef9b2 JS |
78 | case POWER_SUPPLY_PROP_CHARGE_NOW: |
79 | val->intval = battery_capacity; | |
80 | break; | |
81 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
82 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
83 | val->intval = 100; | |
a1e50fd4 AV |
84 | break; |
85 | case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: | |
86 | case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: | |
87 | val->intval = 3600; | |
88 | break; | |
89 | default: | |
90 | pr_info("%s: some properties deliberately report errors.\n", | |
91 | __func__); | |
92 | return -EINVAL; | |
93 | } | |
94 | return 0; | |
95 | } | |
96 | ||
97 | static enum power_supply_property test_power_ac_props[] = { | |
98 | POWER_SUPPLY_PROP_ONLINE, | |
99 | }; | |
100 | ||
101 | static enum power_supply_property test_power_battery_props[] = { | |
102 | POWER_SUPPLY_PROP_STATUS, | |
103 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
104 | POWER_SUPPLY_PROP_HEALTH, | |
f17ef9b2 | 105 | POWER_SUPPLY_PROP_PRESENT, |
a1e50fd4 | 106 | POWER_SUPPLY_PROP_TECHNOLOGY, |
f17ef9b2 | 107 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, |
a1e50fd4 | 108 | POWER_SUPPLY_PROP_CHARGE_FULL, |
f17ef9b2 | 109 | POWER_SUPPLY_PROP_CHARGE_NOW, |
a1e50fd4 AV |
110 | POWER_SUPPLY_PROP_CAPACITY, |
111 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, | |
112 | POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, | |
113 | POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, | |
114 | POWER_SUPPLY_PROP_MODEL_NAME, | |
115 | POWER_SUPPLY_PROP_MANUFACTURER, | |
116 | POWER_SUPPLY_PROP_SERIAL_NUMBER, | |
117 | }; | |
118 | ||
119 | static char *test_power_ac_supplied_to[] = { | |
120 | "test_battery", | |
121 | }; | |
122 | ||
123 | static struct power_supply test_power_supplies[] = { | |
124 | { | |
125 | .name = "test_ac", | |
126 | .type = POWER_SUPPLY_TYPE_MAINS, | |
127 | .supplied_to = test_power_ac_supplied_to, | |
128 | .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to), | |
129 | .properties = test_power_ac_props, | |
130 | .num_properties = ARRAY_SIZE(test_power_ac_props), | |
131 | .get_property = test_power_get_ac_property, | |
132 | }, { | |
133 | .name = "test_battery", | |
134 | .type = POWER_SUPPLY_TYPE_BATTERY, | |
135 | .properties = test_power_battery_props, | |
136 | .num_properties = ARRAY_SIZE(test_power_battery_props), | |
137 | .get_property = test_power_get_battery_property, | |
138 | }, | |
139 | }; | |
140 | ||
f17ef9b2 | 141 | |
a1e50fd4 AV |
142 | static int __init test_power_init(void) |
143 | { | |
144 | int i; | |
145 | int ret; | |
146 | ||
147 | for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) { | |
148 | ret = power_supply_register(NULL, &test_power_supplies[i]); | |
149 | if (ret) { | |
150 | pr_err("%s: failed to register %s\n", __func__, | |
151 | test_power_supplies[i].name); | |
152 | goto failed; | |
153 | } | |
154 | } | |
155 | ||
156 | return 0; | |
157 | failed: | |
158 | while (--i >= 0) | |
159 | power_supply_unregister(&test_power_supplies[i]); | |
160 | return ret; | |
161 | } | |
162 | module_init(test_power_init); | |
163 | ||
164 | static void __exit test_power_exit(void) | |
165 | { | |
166 | int i; | |
167 | ||
168 | /* Let's see how we handle changes... */ | |
f17ef9b2 JS |
169 | ac_online = 0; |
170 | battery_status = POWER_SUPPLY_STATUS_DISCHARGING; | |
a1e50fd4 AV |
171 | for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) |
172 | power_supply_changed(&test_power_supplies[i]); | |
173 | pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n", | |
174 | __func__); | |
175 | ssleep(10); | |
176 | ||
177 | for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) | |
178 | power_supply_unregister(&test_power_supplies[i]); | |
179 | } | |
180 | module_exit(test_power_exit); | |
181 | ||
f17ef9b2 JS |
182 | |
183 | ||
184 | #define MAX_KEYLENGTH 256 | |
185 | struct battery_property_map { | |
186 | int value; | |
187 | char const *key; | |
188 | }; | |
189 | ||
190 | static struct battery_property_map map_ac_online[] = { | |
191 | { 0, "on" }, | |
192 | { 1, "off" }, | |
193 | { -1, NULL }, | |
194 | }; | |
195 | ||
196 | static struct battery_property_map map_status[] = { | |
197 | { POWER_SUPPLY_STATUS_CHARGING, "charging" }, | |
198 | { POWER_SUPPLY_STATUS_DISCHARGING, "discharging" }, | |
199 | { POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" }, | |
200 | { POWER_SUPPLY_STATUS_FULL, "full" }, | |
201 | { -1, NULL }, | |
202 | }; | |
203 | ||
204 | static struct battery_property_map map_health[] = { | |
205 | { POWER_SUPPLY_HEALTH_GOOD, "good" }, | |
206 | { POWER_SUPPLY_HEALTH_OVERHEAT, "overheat" }, | |
207 | { POWER_SUPPLY_HEALTH_DEAD, "dead" }, | |
208 | { POWER_SUPPLY_HEALTH_OVERVOLTAGE, "overvoltage" }, | |
209 | { POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure" }, | |
210 | { -1, NULL }, | |
211 | }; | |
212 | ||
213 | static struct battery_property_map map_present[] = { | |
214 | { 0, "false" }, | |
215 | { 1, "true" }, | |
216 | { -1, NULL }, | |
217 | }; | |
218 | ||
219 | static struct battery_property_map map_technology[] = { | |
220 | { POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" }, | |
221 | { POWER_SUPPLY_TECHNOLOGY_LION, "LION" }, | |
222 | { POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" }, | |
223 | { POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" }, | |
224 | { POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" }, | |
225 | { POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" }, | |
226 | { -1, NULL }, | |
227 | }; | |
228 | ||
229 | ||
230 | static int map_get_value(struct battery_property_map *map, const char *key, | |
231 | int def_val) | |
232 | { | |
233 | char buf[MAX_KEYLENGTH]; | |
234 | int cr; | |
235 | ||
236 | strncpy(buf, key, MAX_KEYLENGTH); | |
237 | buf[MAX_KEYLENGTH-1] = '\0'; | |
238 | ||
239 | cr = strnlen(buf, MAX_KEYLENGTH) - 1; | |
240 | if (buf[cr] == '\n') | |
241 | buf[cr] = '\0'; | |
242 | ||
243 | while (map->key) { | |
244 | if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0) | |
245 | return map->value; | |
246 | map++; | |
247 | } | |
248 | ||
249 | return def_val; | |
250 | } | |
251 | ||
252 | ||
253 | static const char *map_get_key(struct battery_property_map *map, int value, | |
254 | const char *def_key) | |
255 | { | |
256 | while (map->key) { | |
257 | if (map->value == value) | |
258 | return map->key; | |
259 | map++; | |
260 | } | |
261 | ||
262 | return def_key; | |
263 | } | |
264 | ||
265 | static int param_set_ac_online(const char *key, const struct kernel_param *kp) | |
266 | { | |
267 | ac_online = map_get_value(map_ac_online, key, ac_online); | |
268 | power_supply_changed(&test_power_supplies[0]); | |
269 | return 0; | |
270 | } | |
271 | ||
272 | static int param_get_ac_online(char *buffer, const struct kernel_param *kp) | |
273 | { | |
274 | strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown")); | |
275 | return strlen(buffer); | |
276 | } | |
277 | ||
278 | static int param_set_battery_status(const char *key, | |
279 | const struct kernel_param *kp) | |
280 | { | |
281 | battery_status = map_get_value(map_status, key, battery_status); | |
282 | power_supply_changed(&test_power_supplies[1]); | |
283 | return 0; | |
284 | } | |
285 | ||
286 | static int param_get_battery_status(char *buffer, const struct kernel_param *kp) | |
287 | { | |
288 | strcpy(buffer, map_get_key(map_status, battery_status, "unknown")); | |
289 | return strlen(buffer); | |
290 | } | |
291 | ||
292 | static int param_set_battery_health(const char *key, | |
293 | const struct kernel_param *kp) | |
294 | { | |
295 | battery_health = map_get_value(map_health, key, battery_health); | |
296 | power_supply_changed(&test_power_supplies[1]); | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static int param_get_battery_health(char *buffer, const struct kernel_param *kp) | |
301 | { | |
302 | strcpy(buffer, map_get_key(map_health, battery_health, "unknown")); | |
303 | return strlen(buffer); | |
304 | } | |
305 | ||
306 | static int param_set_battery_present(const char *key, | |
307 | const struct kernel_param *kp) | |
308 | { | |
309 | battery_present = map_get_value(map_present, key, battery_present); | |
310 | power_supply_changed(&test_power_supplies[0]); | |
311 | return 0; | |
312 | } | |
313 | ||
314 | static int param_get_battery_present(char *buffer, | |
315 | const struct kernel_param *kp) | |
316 | { | |
317 | strcpy(buffer, map_get_key(map_present, battery_present, "unknown")); | |
318 | return strlen(buffer); | |
319 | } | |
320 | ||
321 | static int param_set_battery_technology(const char *key, | |
322 | const struct kernel_param *kp) | |
323 | { | |
324 | battery_technology = map_get_value(map_technology, key, | |
325 | battery_technology); | |
326 | power_supply_changed(&test_power_supplies[1]); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | static int param_get_battery_technology(char *buffer, | |
331 | const struct kernel_param *kp) | |
332 | { | |
333 | strcpy(buffer, | |
334 | map_get_key(map_technology, battery_technology, "unknown")); | |
335 | return strlen(buffer); | |
336 | } | |
337 | ||
338 | static int param_set_battery_capacity(const char *key, | |
339 | const struct kernel_param *kp) | |
340 | { | |
341 | int tmp; | |
342 | ||
343 | if (1 != sscanf(key, "%d", &tmp)) | |
344 | return -EINVAL; | |
345 | ||
346 | battery_capacity = tmp; | |
347 | power_supply_changed(&test_power_supplies[1]); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | #define param_get_battery_capacity param_get_int | |
352 | ||
353 | ||
354 | ||
355 | static struct kernel_param_ops param_ops_ac_online = { | |
356 | .set = param_set_ac_online, | |
357 | .get = param_get_ac_online, | |
358 | }; | |
359 | ||
360 | static struct kernel_param_ops param_ops_battery_status = { | |
361 | .set = param_set_battery_status, | |
362 | .get = param_get_battery_status, | |
363 | }; | |
364 | ||
365 | static struct kernel_param_ops param_ops_battery_present = { | |
366 | .set = param_set_battery_present, | |
367 | .get = param_get_battery_present, | |
368 | }; | |
369 | ||
370 | static struct kernel_param_ops param_ops_battery_technology = { | |
371 | .set = param_set_battery_technology, | |
372 | .get = param_get_battery_technology, | |
373 | }; | |
374 | ||
375 | static struct kernel_param_ops param_ops_battery_health = { | |
376 | .set = param_set_battery_health, | |
377 | .get = param_get_battery_health, | |
378 | }; | |
379 | ||
380 | static struct kernel_param_ops param_ops_battery_capacity = { | |
381 | .set = param_set_battery_capacity, | |
382 | .get = param_get_battery_capacity, | |
383 | }; | |
384 | ||
385 | ||
386 | #define param_check_ac_online(name, p) __param_check(name, p, void); | |
387 | #define param_check_battery_status(name, p) __param_check(name, p, void); | |
388 | #define param_check_battery_present(name, p) __param_check(name, p, void); | |
389 | #define param_check_battery_technology(name, p) __param_check(name, p, void); | |
390 | #define param_check_battery_health(name, p) __param_check(name, p, void); | |
391 | #define param_check_battery_capacity(name, p) __param_check(name, p, void); | |
392 | ||
393 | ||
394 | module_param(ac_online, ac_online, 0644); | |
395 | MODULE_PARM_DESC(ac_online, "AC charging state <on|off>"); | |
396 | ||
397 | module_param(battery_status, battery_status, 0644); | |
398 | MODULE_PARM_DESC(battery_status, | |
399 | "battery status <charging|discharging|not-charging|full>"); | |
400 | ||
401 | module_param(battery_present, battery_present, 0644); | |
402 | MODULE_PARM_DESC(battery_present, | |
403 | "battery presence state <good|overheat|dead|overvoltage|failure>"); | |
404 | ||
405 | module_param(battery_technology, battery_technology, 0644); | |
406 | MODULE_PARM_DESC(battery_technology, | |
407 | "battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>"); | |
408 | ||
409 | module_param(battery_health, battery_health, 0644); | |
410 | MODULE_PARM_DESC(battery_health, | |
411 | "battery health state <good|overheat|dead|overvoltage|failure>"); | |
412 | ||
413 | module_param(battery_capacity, battery_capacity, 0644); | |
414 | MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)"); | |
415 | ||
416 | ||
a1e50fd4 AV |
417 | MODULE_DESCRIPTION("Power supply driver for testing"); |
418 | MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>"); | |
419 | MODULE_LICENSE("GPL"); |