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b886d83c | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1236441f | 2 | /* |
5ed04880 GR |
3 | * hwmon.c - part of lm_sensors, Linux kernel modules for hardware monitoring |
4 | * | |
5 | * This file defines the sysfs class "hwmon", for use by sensors drivers. | |
6 | * | |
7 | * Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com> | |
5ed04880 | 8 | */ |
1236441f | 9 | |
c95df1ae JP |
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
11 | ||
d560168b | 12 | #include <linux/bitops.h> |
1236441f MH |
13 | #include <linux/device.h> |
14 | #include <linux/err.h> | |
8c65b4a6 | 15 | #include <linux/gfp.h> |
c9ebbe6f GR |
16 | #include <linux/hwmon.h> |
17 | #include <linux/idr.h> | |
1597b374 | 18 | #include <linux/list.h> |
c9ebbe6f | 19 | #include <linux/module.h> |
2958b1ec | 20 | #include <linux/pci.h> |
c9ebbe6f | 21 | #include <linux/slab.h> |
648cd48c | 22 | #include <linux/string.h> |
d560168b | 23 | #include <linux/thermal.h> |
1236441f | 24 | |
61b8ab2c NC |
25 | #define CREATE_TRACE_POINTS |
26 | #include <trace/events/hwmon.h> | |
27 | ||
1236441f MH |
28 | #define HWMON_ID_PREFIX "hwmon" |
29 | #define HWMON_ID_FORMAT HWMON_ID_PREFIX "%d" | |
30 | ||
bab2243c GR |
31 | struct hwmon_device { |
32 | const char *name; | |
33 | struct device dev; | |
d560168b | 34 | const struct hwmon_chip_info *chip; |
1597b374 | 35 | struct list_head tzdata; |
d560168b GR |
36 | struct attribute_group group; |
37 | const struct attribute_group **groups; | |
bab2243c | 38 | }; |
d560168b | 39 | |
bab2243c GR |
40 | #define to_hwmon_device(d) container_of(d, struct hwmon_device, dev) |
41 | ||
3a412d5e GR |
42 | #define MAX_SYSFS_ATTR_NAME_LENGTH 32 |
43 | ||
d560168b GR |
44 | struct hwmon_device_attribute { |
45 | struct device_attribute dev_attr; | |
46 | const struct hwmon_ops *ops; | |
47 | enum hwmon_sensor_types type; | |
48 | u32 attr; | |
49 | int index; | |
3a412d5e | 50 | char name[MAX_SYSFS_ATTR_NAME_LENGTH]; |
d560168b GR |
51 | }; |
52 | ||
53 | #define to_hwmon_attr(d) \ | |
54 | container_of(d, struct hwmon_device_attribute, dev_attr) | |
3bf8bdcf | 55 | #define to_dev_attr(a) container_of(a, struct device_attribute, attr) |
d560168b GR |
56 | |
57 | /* | |
58 | * Thermal zone information | |
d560168b GR |
59 | */ |
60 | struct hwmon_thermal_data { | |
1597b374 | 61 | struct list_head node; /* hwmon tzdata list entry */ |
3bf8bdcf | 62 | struct device *dev; /* Reference to hwmon device */ |
d560168b | 63 | int index; /* sensor index */ |
1597b374 | 64 | struct thermal_zone_device *tzd;/* thermal zone device */ |
d560168b GR |
65 | }; |
66 | ||
bab2243c | 67 | static ssize_t |
2ab0c6c5 | 68 | name_show(struct device *dev, struct device_attribute *attr, char *buf) |
bab2243c GR |
69 | { |
70 | return sprintf(buf, "%s\n", to_hwmon_device(dev)->name); | |
71 | } | |
2ab0c6c5 | 72 | static DEVICE_ATTR_RO(name); |
bab2243c GR |
73 | |
74 | static struct attribute *hwmon_dev_attrs[] = { | |
75 | &dev_attr_name.attr, | |
76 | NULL | |
77 | }; | |
78 | ||
79 | static umode_t hwmon_dev_name_is_visible(struct kobject *kobj, | |
80 | struct attribute *attr, int n) | |
81 | { | |
82 | struct device *dev = container_of(kobj, struct device, kobj); | |
83 | ||
84 | if (to_hwmon_device(dev)->name == NULL) | |
85 | return 0; | |
86 | ||
87 | return attr->mode; | |
88 | } | |
89 | ||
524703ac | 90 | static const struct attribute_group hwmon_dev_attr_group = { |
bab2243c GR |
91 | .attrs = hwmon_dev_attrs, |
92 | .is_visible = hwmon_dev_name_is_visible, | |
93 | }; | |
94 | ||
95 | static const struct attribute_group *hwmon_dev_attr_groups[] = { | |
96 | &hwmon_dev_attr_group, | |
97 | NULL | |
98 | }; | |
99 | ||
3bf8bdcf GR |
100 | static void hwmon_free_attrs(struct attribute **attrs) |
101 | { | |
102 | int i; | |
103 | ||
104 | for (i = 0; attrs[i]; i++) { | |
105 | struct device_attribute *dattr = to_dev_attr(attrs[i]); | |
106 | struct hwmon_device_attribute *hattr = to_hwmon_attr(dattr); | |
107 | ||
108 | kfree(hattr); | |
109 | } | |
110 | kfree(attrs); | |
111 | } | |
112 | ||
bab2243c GR |
113 | static void hwmon_dev_release(struct device *dev) |
114 | { | |
3bf8bdcf GR |
115 | struct hwmon_device *hwdev = to_hwmon_device(dev); |
116 | ||
117 | if (hwdev->group.attrs) | |
118 | hwmon_free_attrs(hwdev->group.attrs); | |
119 | kfree(hwdev->groups); | |
120 | kfree(hwdev); | |
bab2243c GR |
121 | } |
122 | ||
123 | static struct class hwmon_class = { | |
124 | .name = "hwmon", | |
125 | .owner = THIS_MODULE, | |
126 | .dev_groups = hwmon_dev_attr_groups, | |
127 | .dev_release = hwmon_dev_release, | |
128 | }; | |
1236441f | 129 | |
4ca5f468 | 130 | static DEFINE_IDA(hwmon_ida); |
1236441f | 131 | |
d560168b GR |
132 | /* Thermal zone handling */ |
133 | ||
86430c1a GR |
134 | /* |
135 | * The complex conditional is necessary to avoid a cyclic dependency | |
136 | * between hwmon and thermal_sys modules. | |
137 | */ | |
f3735332 | 138 | #ifdef CONFIG_THERMAL_OF |
d560168b GR |
139 | static int hwmon_thermal_get_temp(void *data, int *temp) |
140 | { | |
141 | struct hwmon_thermal_data *tdata = data; | |
3bf8bdcf | 142 | struct hwmon_device *hwdev = to_hwmon_device(tdata->dev); |
d560168b GR |
143 | int ret; |
144 | long t; | |
145 | ||
3bf8bdcf | 146 | ret = hwdev->chip->ops->read(tdata->dev, hwmon_temp, hwmon_temp_input, |
d560168b GR |
147 | tdata->index, &t); |
148 | if (ret < 0) | |
149 | return ret; | |
150 | ||
151 | *temp = t; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
c9920650 | 156 | static const struct thermal_zone_of_device_ops hwmon_thermal_ops = { |
d560168b GR |
157 | .get_temp = hwmon_thermal_get_temp, |
158 | }; | |
159 | ||
1597b374 GR |
160 | static void hwmon_thermal_remove_sensor(void *data) |
161 | { | |
162 | list_del(data); | |
163 | } | |
164 | ||
3bf8bdcf | 165 | static int hwmon_thermal_add_sensor(struct device *dev, int index) |
d560168b | 166 | { |
1597b374 | 167 | struct hwmon_device *hwdev = to_hwmon_device(dev); |
d560168b | 168 | struct hwmon_thermal_data *tdata; |
47c332de | 169 | struct thermal_zone_device *tzd; |
1597b374 | 170 | int err; |
d560168b GR |
171 | |
172 | tdata = devm_kzalloc(dev, sizeof(*tdata), GFP_KERNEL); | |
173 | if (!tdata) | |
174 | return -ENOMEM; | |
175 | ||
3bf8bdcf | 176 | tdata->dev = dev; |
d560168b GR |
177 | tdata->index = index; |
178 | ||
3bf8bdcf | 179 | tzd = devm_thermal_zone_of_sensor_register(dev, index, tdata, |
47c332de LW |
180 | &hwmon_thermal_ops); |
181 | /* | |
182 | * If CONFIG_THERMAL_OF is disabled, this returns -ENODEV, | |
183 | * so ignore that error but forward any other error. | |
184 | */ | |
185 | if (IS_ERR(tzd) && (PTR_ERR(tzd) != -ENODEV)) | |
186 | return PTR_ERR(tzd); | |
d560168b | 187 | |
1597b374 GR |
188 | err = devm_add_action(dev, hwmon_thermal_remove_sensor, &tdata->node); |
189 | if (err) | |
190 | return err; | |
191 | ||
192 | tdata->tzd = tzd; | |
193 | list_add(&tdata->node, &hwdev->tzdata); | |
194 | ||
d560168b GR |
195 | return 0; |
196 | } | |
44e3ad88 AM |
197 | |
198 | static int hwmon_thermal_register_sensors(struct device *dev) | |
199 | { | |
200 | struct hwmon_device *hwdev = to_hwmon_device(dev); | |
201 | const struct hwmon_chip_info *chip = hwdev->chip; | |
202 | const struct hwmon_channel_info **info = chip->info; | |
203 | void *drvdata = dev_get_drvdata(dev); | |
204 | int i; | |
205 | ||
206 | for (i = 1; info[i]; i++) { | |
207 | int j; | |
208 | ||
209 | if (info[i]->type != hwmon_temp) | |
210 | continue; | |
211 | ||
212 | for (j = 0; info[i]->config[j]; j++) { | |
213 | int err; | |
214 | ||
215 | if (!(info[i]->config[j] & HWMON_T_INPUT) || | |
216 | !chip->ops->is_visible(drvdata, hwmon_temp, | |
217 | hwmon_temp_input, j)) | |
218 | continue; | |
219 | ||
220 | err = hwmon_thermal_add_sensor(dev, j); | |
221 | if (err) | |
222 | return err; | |
223 | } | |
224 | } | |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
1597b374 GR |
229 | static void hwmon_thermal_notify(struct device *dev, int index) |
230 | { | |
231 | struct hwmon_device *hwdev = to_hwmon_device(dev); | |
232 | struct hwmon_thermal_data *tzdata; | |
233 | ||
234 | list_for_each_entry(tzdata, &hwdev->tzdata, node) { | |
235 | if (tzdata->index == index) { | |
236 | thermal_zone_device_update(tzdata->tzd, | |
237 | THERMAL_EVENT_UNSPECIFIED); | |
238 | } | |
239 | } | |
240 | } | |
241 | ||
d560168b | 242 | #else |
44e3ad88 | 243 | static int hwmon_thermal_register_sensors(struct device *dev) |
d560168b GR |
244 | { |
245 | return 0; | |
246 | } | |
1597b374 GR |
247 | |
248 | static void hwmon_thermal_notify(struct device *dev, int index) { } | |
249 | ||
86430c1a | 250 | #endif /* IS_REACHABLE(CONFIG_THERMAL) && ... */ |
d560168b | 251 | |
61b8ab2c NC |
252 | static int hwmon_attr_base(enum hwmon_sensor_types type) |
253 | { | |
4413405f | 254 | if (type == hwmon_in || type == hwmon_intrusion) |
61b8ab2c NC |
255 | return 0; |
256 | return 1; | |
257 | } | |
258 | ||
d560168b GR |
259 | /* sysfs attribute management */ |
260 | ||
261 | static ssize_t hwmon_attr_show(struct device *dev, | |
262 | struct device_attribute *devattr, char *buf) | |
263 | { | |
264 | struct hwmon_device_attribute *hattr = to_hwmon_attr(devattr); | |
265 | long val; | |
266 | int ret; | |
267 | ||
268 | ret = hattr->ops->read(dev, hattr->type, hattr->attr, hattr->index, | |
269 | &val); | |
270 | if (ret < 0) | |
271 | return ret; | |
272 | ||
61b8ab2c NC |
273 | trace_hwmon_attr_show(hattr->index + hwmon_attr_base(hattr->type), |
274 | hattr->name, val); | |
275 | ||
d560168b GR |
276 | return sprintf(buf, "%ld\n", val); |
277 | } | |
278 | ||
e159ab5c GR |
279 | static ssize_t hwmon_attr_show_string(struct device *dev, |
280 | struct device_attribute *devattr, | |
281 | char *buf) | |
282 | { | |
283 | struct hwmon_device_attribute *hattr = to_hwmon_attr(devattr); | |
61b8ab2c | 284 | enum hwmon_sensor_types type = hattr->type; |
5ba6bcbc | 285 | const char *s; |
e159ab5c GR |
286 | int ret; |
287 | ||
288 | ret = hattr->ops->read_string(dev, hattr->type, hattr->attr, | |
289 | hattr->index, &s); | |
290 | if (ret < 0) | |
291 | return ret; | |
292 | ||
61b8ab2c NC |
293 | trace_hwmon_attr_show_string(hattr->index + hwmon_attr_base(type), |
294 | hattr->name, s); | |
295 | ||
e159ab5c GR |
296 | return sprintf(buf, "%s\n", s); |
297 | } | |
298 | ||
d560168b GR |
299 | static ssize_t hwmon_attr_store(struct device *dev, |
300 | struct device_attribute *devattr, | |
301 | const char *buf, size_t count) | |
302 | { | |
303 | struct hwmon_device_attribute *hattr = to_hwmon_attr(devattr); | |
304 | long val; | |
305 | int ret; | |
306 | ||
307 | ret = kstrtol(buf, 10, &val); | |
308 | if (ret < 0) | |
309 | return ret; | |
310 | ||
311 | ret = hattr->ops->write(dev, hattr->type, hattr->attr, hattr->index, | |
312 | val); | |
313 | if (ret < 0) | |
314 | return ret; | |
315 | ||
61b8ab2c NC |
316 | trace_hwmon_attr_store(hattr->index + hwmon_attr_base(hattr->type), |
317 | hattr->name, val); | |
d560168b | 318 | |
61b8ab2c | 319 | return count; |
d560168b GR |
320 | } |
321 | ||
e159ab5c GR |
322 | static bool is_string_attr(enum hwmon_sensor_types type, u32 attr) |
323 | { | |
324 | return (type == hwmon_temp && attr == hwmon_temp_label) || | |
325 | (type == hwmon_in && attr == hwmon_in_label) || | |
326 | (type == hwmon_curr && attr == hwmon_curr_label) || | |
327 | (type == hwmon_power && attr == hwmon_power_label) || | |
328 | (type == hwmon_energy && attr == hwmon_energy_label) || | |
329 | (type == hwmon_humidity && attr == hwmon_humidity_label) || | |
330 | (type == hwmon_fan && attr == hwmon_fan_label); | |
331 | } | |
332 | ||
3bf8bdcf | 333 | static struct attribute *hwmon_genattr(const void *drvdata, |
d560168b GR |
334 | enum hwmon_sensor_types type, |
335 | u32 attr, | |
336 | int index, | |
337 | const char *template, | |
338 | const struct hwmon_ops *ops) | |
339 | { | |
340 | struct hwmon_device_attribute *hattr; | |
341 | struct device_attribute *dattr; | |
342 | struct attribute *a; | |
343 | umode_t mode; | |
3b443def | 344 | const char *name; |
e159ab5c | 345 | bool is_string = is_string_attr(type, attr); |
d560168b GR |
346 | |
347 | /* The attribute is invisible if there is no template string */ | |
348 | if (!template) | |
349 | return ERR_PTR(-ENOENT); | |
350 | ||
351 | mode = ops->is_visible(drvdata, type, attr, index); | |
352 | if (!mode) | |
353 | return ERR_PTR(-ENOENT); | |
354 | ||
0d87116f | 355 | if ((mode & 0444) && ((is_string && !ops->read_string) || |
e159ab5c | 356 | (!is_string && !ops->read))) |
d560168b | 357 | return ERR_PTR(-EINVAL); |
0d87116f | 358 | if ((mode & 0222) && !ops->write) |
d560168b GR |
359 | return ERR_PTR(-EINVAL); |
360 | ||
3bf8bdcf | 361 | hattr = kzalloc(sizeof(*hattr), GFP_KERNEL); |
3a412d5e GR |
362 | if (!hattr) |
363 | return ERR_PTR(-ENOMEM); | |
364 | ||
d560168b | 365 | if (type == hwmon_chip) { |
3b443def | 366 | name = template; |
d560168b | 367 | } else { |
3a412d5e | 368 | scnprintf(hattr->name, sizeof(hattr->name), template, |
d560168b | 369 | index + hwmon_attr_base(type)); |
3a412d5e | 370 | name = hattr->name; |
d560168b GR |
371 | } |
372 | ||
d560168b GR |
373 | hattr->type = type; |
374 | hattr->attr = attr; | |
375 | hattr->index = index; | |
376 | hattr->ops = ops; | |
377 | ||
378 | dattr = &hattr->dev_attr; | |
e159ab5c | 379 | dattr->show = is_string ? hwmon_attr_show_string : hwmon_attr_show; |
d560168b GR |
380 | dattr->store = hwmon_attr_store; |
381 | ||
382 | a = &dattr->attr; | |
383 | sysfs_attr_init(a); | |
384 | a->name = name; | |
385 | a->mode = mode; | |
386 | ||
387 | return a; | |
388 | } | |
389 | ||
f4d325d5 GR |
390 | /* |
391 | * Chip attributes are not attribute templates but actual sysfs attributes. | |
392 | * See hwmon_genattr() for special handling. | |
393 | */ | |
394 | static const char * const hwmon_chip_attrs[] = { | |
d560168b | 395 | [hwmon_chip_temp_reset_history] = "temp_reset_history", |
00d616cf | 396 | [hwmon_chip_in_reset_history] = "in_reset_history", |
9b26947c | 397 | [hwmon_chip_curr_reset_history] = "curr_reset_history", |
b308f5c7 | 398 | [hwmon_chip_power_reset_history] = "power_reset_history", |
d560168b GR |
399 | [hwmon_chip_update_interval] = "update_interval", |
400 | [hwmon_chip_alarms] = "alarms", | |
9f00995e GR |
401 | [hwmon_chip_samples] = "samples", |
402 | [hwmon_chip_curr_samples] = "curr_samples", | |
403 | [hwmon_chip_in_samples] = "in_samples", | |
404 | [hwmon_chip_power_samples] = "power_samples", | |
405 | [hwmon_chip_temp_samples] = "temp_samples", | |
d560168b GR |
406 | }; |
407 | ||
408 | static const char * const hwmon_temp_attr_templates[] = { | |
002c6b54 | 409 | [hwmon_temp_enable] = "temp%d_enable", |
d560168b GR |
410 | [hwmon_temp_input] = "temp%d_input", |
411 | [hwmon_temp_type] = "temp%d_type", | |
412 | [hwmon_temp_lcrit] = "temp%d_lcrit", | |
413 | [hwmon_temp_lcrit_hyst] = "temp%d_lcrit_hyst", | |
414 | [hwmon_temp_min] = "temp%d_min", | |
415 | [hwmon_temp_min_hyst] = "temp%d_min_hyst", | |
416 | [hwmon_temp_max] = "temp%d_max", | |
417 | [hwmon_temp_max_hyst] = "temp%d_max_hyst", | |
418 | [hwmon_temp_crit] = "temp%d_crit", | |
419 | [hwmon_temp_crit_hyst] = "temp%d_crit_hyst", | |
420 | [hwmon_temp_emergency] = "temp%d_emergency", | |
421 | [hwmon_temp_emergency_hyst] = "temp%d_emergency_hyst", | |
422 | [hwmon_temp_alarm] = "temp%d_alarm", | |
423 | [hwmon_temp_lcrit_alarm] = "temp%d_lcrit_alarm", | |
424 | [hwmon_temp_min_alarm] = "temp%d_min_alarm", | |
425 | [hwmon_temp_max_alarm] = "temp%d_max_alarm", | |
426 | [hwmon_temp_crit_alarm] = "temp%d_crit_alarm", | |
427 | [hwmon_temp_emergency_alarm] = "temp%d_emergency_alarm", | |
428 | [hwmon_temp_fault] = "temp%d_fault", | |
429 | [hwmon_temp_offset] = "temp%d_offset", | |
430 | [hwmon_temp_label] = "temp%d_label", | |
431 | [hwmon_temp_lowest] = "temp%d_lowest", | |
432 | [hwmon_temp_highest] = "temp%d_highest", | |
433 | [hwmon_temp_reset_history] = "temp%d_reset_history", | |
434 | }; | |
435 | ||
00d616cf | 436 | static const char * const hwmon_in_attr_templates[] = { |
002c6b54 | 437 | [hwmon_in_enable] = "in%d_enable", |
00d616cf GR |
438 | [hwmon_in_input] = "in%d_input", |
439 | [hwmon_in_min] = "in%d_min", | |
440 | [hwmon_in_max] = "in%d_max", | |
441 | [hwmon_in_lcrit] = "in%d_lcrit", | |
442 | [hwmon_in_crit] = "in%d_crit", | |
443 | [hwmon_in_average] = "in%d_average", | |
444 | [hwmon_in_lowest] = "in%d_lowest", | |
445 | [hwmon_in_highest] = "in%d_highest", | |
446 | [hwmon_in_reset_history] = "in%d_reset_history", | |
447 | [hwmon_in_label] = "in%d_label", | |
448 | [hwmon_in_alarm] = "in%d_alarm", | |
449 | [hwmon_in_min_alarm] = "in%d_min_alarm", | |
450 | [hwmon_in_max_alarm] = "in%d_max_alarm", | |
451 | [hwmon_in_lcrit_alarm] = "in%d_lcrit_alarm", | |
452 | [hwmon_in_crit_alarm] = "in%d_crit_alarm", | |
453 | }; | |
454 | ||
9b26947c | 455 | static const char * const hwmon_curr_attr_templates[] = { |
002c6b54 | 456 | [hwmon_curr_enable] = "curr%d_enable", |
9b26947c GR |
457 | [hwmon_curr_input] = "curr%d_input", |
458 | [hwmon_curr_min] = "curr%d_min", | |
459 | [hwmon_curr_max] = "curr%d_max", | |
460 | [hwmon_curr_lcrit] = "curr%d_lcrit", | |
461 | [hwmon_curr_crit] = "curr%d_crit", | |
462 | [hwmon_curr_average] = "curr%d_average", | |
463 | [hwmon_curr_lowest] = "curr%d_lowest", | |
464 | [hwmon_curr_highest] = "curr%d_highest", | |
465 | [hwmon_curr_reset_history] = "curr%d_reset_history", | |
466 | [hwmon_curr_label] = "curr%d_label", | |
467 | [hwmon_curr_alarm] = "curr%d_alarm", | |
468 | [hwmon_curr_min_alarm] = "curr%d_min_alarm", | |
469 | [hwmon_curr_max_alarm] = "curr%d_max_alarm", | |
470 | [hwmon_curr_lcrit_alarm] = "curr%d_lcrit_alarm", | |
471 | [hwmon_curr_crit_alarm] = "curr%d_crit_alarm", | |
472 | }; | |
473 | ||
b308f5c7 | 474 | static const char * const hwmon_power_attr_templates[] = { |
002c6b54 | 475 | [hwmon_power_enable] = "power%d_enable", |
b308f5c7 GR |
476 | [hwmon_power_average] = "power%d_average", |
477 | [hwmon_power_average_interval] = "power%d_average_interval", | |
478 | [hwmon_power_average_interval_max] = "power%d_interval_max", | |
479 | [hwmon_power_average_interval_min] = "power%d_interval_min", | |
480 | [hwmon_power_average_highest] = "power%d_average_highest", | |
481 | [hwmon_power_average_lowest] = "power%d_average_lowest", | |
482 | [hwmon_power_average_max] = "power%d_average_max", | |
483 | [hwmon_power_average_min] = "power%d_average_min", | |
484 | [hwmon_power_input] = "power%d_input", | |
485 | [hwmon_power_input_highest] = "power%d_input_highest", | |
486 | [hwmon_power_input_lowest] = "power%d_input_lowest", | |
487 | [hwmon_power_reset_history] = "power%d_reset_history", | |
488 | [hwmon_power_accuracy] = "power%d_accuracy", | |
489 | [hwmon_power_cap] = "power%d_cap", | |
490 | [hwmon_power_cap_hyst] = "power%d_cap_hyst", | |
491 | [hwmon_power_cap_max] = "power%d_cap_max", | |
492 | [hwmon_power_cap_min] = "power%d_cap_min", | |
aa7f29b0 | 493 | [hwmon_power_min] = "power%d_min", |
b308f5c7 | 494 | [hwmon_power_max] = "power%d_max", |
aa7f29b0 | 495 | [hwmon_power_lcrit] = "power%d_lcrit", |
b308f5c7 GR |
496 | [hwmon_power_crit] = "power%d_crit", |
497 | [hwmon_power_label] = "power%d_label", | |
498 | [hwmon_power_alarm] = "power%d_alarm", | |
499 | [hwmon_power_cap_alarm] = "power%d_cap_alarm", | |
aa7f29b0 | 500 | [hwmon_power_min_alarm] = "power%d_min_alarm", |
b308f5c7 | 501 | [hwmon_power_max_alarm] = "power%d_max_alarm", |
aa7f29b0 | 502 | [hwmon_power_lcrit_alarm] = "power%d_lcrit_alarm", |
b308f5c7 GR |
503 | [hwmon_power_crit_alarm] = "power%d_crit_alarm", |
504 | }; | |
505 | ||
6bfcca44 | 506 | static const char * const hwmon_energy_attr_templates[] = { |
002c6b54 | 507 | [hwmon_energy_enable] = "energy%d_enable", |
6bfcca44 GR |
508 | [hwmon_energy_input] = "energy%d_input", |
509 | [hwmon_energy_label] = "energy%d_label", | |
510 | }; | |
511 | ||
512 | static const char * const hwmon_humidity_attr_templates[] = { | |
002c6b54 | 513 | [hwmon_humidity_enable] = "humidity%d_enable", |
6bfcca44 GR |
514 | [hwmon_humidity_input] = "humidity%d_input", |
515 | [hwmon_humidity_label] = "humidity%d_label", | |
516 | [hwmon_humidity_min] = "humidity%d_min", | |
517 | [hwmon_humidity_min_hyst] = "humidity%d_min_hyst", | |
518 | [hwmon_humidity_max] = "humidity%d_max", | |
519 | [hwmon_humidity_max_hyst] = "humidity%d_max_hyst", | |
520 | [hwmon_humidity_alarm] = "humidity%d_alarm", | |
521 | [hwmon_humidity_fault] = "humidity%d_fault", | |
522 | }; | |
523 | ||
8faee73f | 524 | static const char * const hwmon_fan_attr_templates[] = { |
002c6b54 | 525 | [hwmon_fan_enable] = "fan%d_enable", |
8faee73f GR |
526 | [hwmon_fan_input] = "fan%d_input", |
527 | [hwmon_fan_label] = "fan%d_label", | |
528 | [hwmon_fan_min] = "fan%d_min", | |
529 | [hwmon_fan_max] = "fan%d_max", | |
530 | [hwmon_fan_div] = "fan%d_div", | |
531 | [hwmon_fan_pulses] = "fan%d_pulses", | |
532 | [hwmon_fan_target] = "fan%d_target", | |
533 | [hwmon_fan_alarm] = "fan%d_alarm", | |
534 | [hwmon_fan_min_alarm] = "fan%d_min_alarm", | |
535 | [hwmon_fan_max_alarm] = "fan%d_max_alarm", | |
536 | [hwmon_fan_fault] = "fan%d_fault", | |
537 | }; | |
538 | ||
f9f7bb3a GR |
539 | static const char * const hwmon_pwm_attr_templates[] = { |
540 | [hwmon_pwm_input] = "pwm%d", | |
541 | [hwmon_pwm_enable] = "pwm%d_enable", | |
542 | [hwmon_pwm_mode] = "pwm%d_mode", | |
543 | [hwmon_pwm_freq] = "pwm%d_freq", | |
544 | }; | |
545 | ||
4413405f DDAG |
546 | static const char * const hwmon_intrusion_attr_templates[] = { |
547 | [hwmon_intrusion_alarm] = "intrusion%d_alarm", | |
548 | [hwmon_intrusion_beep] = "intrusion%d_beep", | |
549 | }; | |
550 | ||
d560168b | 551 | static const char * const *__templates[] = { |
f4d325d5 | 552 | [hwmon_chip] = hwmon_chip_attrs, |
d560168b | 553 | [hwmon_temp] = hwmon_temp_attr_templates, |
00d616cf | 554 | [hwmon_in] = hwmon_in_attr_templates, |
9b26947c | 555 | [hwmon_curr] = hwmon_curr_attr_templates, |
b308f5c7 | 556 | [hwmon_power] = hwmon_power_attr_templates, |
6bfcca44 GR |
557 | [hwmon_energy] = hwmon_energy_attr_templates, |
558 | [hwmon_humidity] = hwmon_humidity_attr_templates, | |
8faee73f | 559 | [hwmon_fan] = hwmon_fan_attr_templates, |
f9f7bb3a | 560 | [hwmon_pwm] = hwmon_pwm_attr_templates, |
4413405f | 561 | [hwmon_intrusion] = hwmon_intrusion_attr_templates, |
d560168b GR |
562 | }; |
563 | ||
564 | static const int __templates_size[] = { | |
f4d325d5 | 565 | [hwmon_chip] = ARRAY_SIZE(hwmon_chip_attrs), |
d560168b | 566 | [hwmon_temp] = ARRAY_SIZE(hwmon_temp_attr_templates), |
00d616cf | 567 | [hwmon_in] = ARRAY_SIZE(hwmon_in_attr_templates), |
9b26947c | 568 | [hwmon_curr] = ARRAY_SIZE(hwmon_curr_attr_templates), |
b308f5c7 | 569 | [hwmon_power] = ARRAY_SIZE(hwmon_power_attr_templates), |
6bfcca44 GR |
570 | [hwmon_energy] = ARRAY_SIZE(hwmon_energy_attr_templates), |
571 | [hwmon_humidity] = ARRAY_SIZE(hwmon_humidity_attr_templates), | |
8faee73f | 572 | [hwmon_fan] = ARRAY_SIZE(hwmon_fan_attr_templates), |
f9f7bb3a | 573 | [hwmon_pwm] = ARRAY_SIZE(hwmon_pwm_attr_templates), |
4413405f | 574 | [hwmon_intrusion] = ARRAY_SIZE(hwmon_intrusion_attr_templates), |
d560168b GR |
575 | }; |
576 | ||
1597b374 GR |
577 | int hwmon_notify_event(struct device *dev, enum hwmon_sensor_types type, |
578 | u32 attr, int channel) | |
579 | { | |
580 | char sattr[MAX_SYSFS_ATTR_NAME_LENGTH]; | |
581 | const char * const *templates; | |
582 | const char *template; | |
583 | int base; | |
584 | ||
585 | if (type >= ARRAY_SIZE(__templates)) | |
586 | return -EINVAL; | |
587 | if (attr >= __templates_size[type]) | |
588 | return -EINVAL; | |
589 | ||
590 | templates = __templates[type]; | |
591 | template = templates[attr]; | |
592 | ||
593 | base = hwmon_attr_base(type); | |
594 | ||
595 | scnprintf(sattr, MAX_SYSFS_ATTR_NAME_LENGTH, template, base + channel); | |
596 | sysfs_notify(&dev->kobj, NULL, sattr); | |
597 | kobject_uevent(&dev->kobj, KOBJ_CHANGE); | |
598 | ||
599 | if (type == hwmon_temp) | |
600 | hwmon_thermal_notify(dev, channel); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | EXPORT_SYMBOL_GPL(hwmon_notify_event); | |
605 | ||
d560168b GR |
606 | static int hwmon_num_channel_attrs(const struct hwmon_channel_info *info) |
607 | { | |
608 | int i, n; | |
609 | ||
610 | for (i = n = 0; info->config[i]; i++) | |
611 | n += hweight32(info->config[i]); | |
612 | ||
613 | return n; | |
614 | } | |
615 | ||
3bf8bdcf | 616 | static int hwmon_genattrs(const void *drvdata, |
d560168b GR |
617 | struct attribute **attrs, |
618 | const struct hwmon_ops *ops, | |
619 | const struct hwmon_channel_info *info) | |
620 | { | |
621 | const char * const *templates; | |
622 | int template_size; | |
623 | int i, aindex = 0; | |
624 | ||
625 | if (info->type >= ARRAY_SIZE(__templates)) | |
626 | return -EINVAL; | |
627 | ||
628 | templates = __templates[info->type]; | |
629 | template_size = __templates_size[info->type]; | |
630 | ||
631 | for (i = 0; info->config[i]; i++) { | |
632 | u32 attr_mask = info->config[i]; | |
633 | u32 attr; | |
634 | ||
635 | while (attr_mask) { | |
636 | struct attribute *a; | |
637 | ||
638 | attr = __ffs(attr_mask); | |
639 | attr_mask &= ~BIT(attr); | |
640 | if (attr >= template_size) | |
641 | return -EINVAL; | |
3bf8bdcf | 642 | a = hwmon_genattr(drvdata, info->type, attr, i, |
d560168b GR |
643 | templates[attr], ops); |
644 | if (IS_ERR(a)) { | |
645 | if (PTR_ERR(a) != -ENOENT) | |
646 | return PTR_ERR(a); | |
647 | continue; | |
648 | } | |
649 | attrs[aindex++] = a; | |
650 | } | |
651 | } | |
652 | return aindex; | |
653 | } | |
654 | ||
655 | static struct attribute ** | |
3bf8bdcf | 656 | __hwmon_create_attrs(const void *drvdata, const struct hwmon_chip_info *chip) |
d560168b GR |
657 | { |
658 | int ret, i, aindex = 0, nattrs = 0; | |
659 | struct attribute **attrs; | |
660 | ||
661 | for (i = 0; chip->info[i]; i++) | |
662 | nattrs += hwmon_num_channel_attrs(chip->info[i]); | |
663 | ||
664 | if (nattrs == 0) | |
665 | return ERR_PTR(-EINVAL); | |
666 | ||
3bf8bdcf | 667 | attrs = kcalloc(nattrs + 1, sizeof(*attrs), GFP_KERNEL); |
d560168b GR |
668 | if (!attrs) |
669 | return ERR_PTR(-ENOMEM); | |
670 | ||
671 | for (i = 0; chip->info[i]; i++) { | |
3bf8bdcf | 672 | ret = hwmon_genattrs(drvdata, &attrs[aindex], chip->ops, |
d560168b | 673 | chip->info[i]); |
3bf8bdcf GR |
674 | if (ret < 0) { |
675 | hwmon_free_attrs(attrs); | |
d560168b | 676 | return ERR_PTR(ret); |
3bf8bdcf | 677 | } |
d560168b GR |
678 | aindex += ret; |
679 | } | |
680 | ||
681 | return attrs; | |
682 | } | |
683 | ||
684 | static struct device * | |
685 | __hwmon_device_register(struct device *dev, const char *name, void *drvdata, | |
686 | const struct hwmon_chip_info *chip, | |
687 | const struct attribute_group **groups) | |
1236441f | 688 | { |
bab2243c | 689 | struct hwmon_device *hwdev; |
d560168b | 690 | struct device *hdev; |
44e3ad88 | 691 | int i, err, id; |
ded2b666 | 692 | |
74d3b641 | 693 | /* Complain about invalid characters in hwmon name attribute */ |
648cd48c | 694 | if (name && (!strlen(name) || strpbrk(name, "-* \t\n"))) |
74d3b641 GR |
695 | dev_warn(dev, |
696 | "hwmon: '%s' is not a valid name attribute, please fix\n", | |
697 | name); | |
648cd48c | 698 | |
4ca5f468 JC |
699 | id = ida_simple_get(&hwmon_ida, 0, 0, GFP_KERNEL); |
700 | if (id < 0) | |
701 | return ERR_PTR(id); | |
1236441f | 702 | |
bab2243c GR |
703 | hwdev = kzalloc(sizeof(*hwdev), GFP_KERNEL); |
704 | if (hwdev == NULL) { | |
705 | err = -ENOMEM; | |
706 | goto ida_remove; | |
707 | } | |
1236441f | 708 | |
d560168b GR |
709 | hdev = &hwdev->dev; |
710 | ||
239552f4 | 711 | if (chip) { |
d560168b | 712 | struct attribute **attrs; |
b2a4cc3a | 713 | int ngroups = 2; /* terminating NULL plus &hwdev->groups */ |
d560168b GR |
714 | |
715 | if (groups) | |
716 | for (i = 0; groups[i]; i++) | |
717 | ngroups++; | |
718 | ||
3bf8bdcf | 719 | hwdev->groups = kcalloc(ngroups, sizeof(*groups), GFP_KERNEL); |
38d8ed65 CIK |
720 | if (!hwdev->groups) { |
721 | err = -ENOMEM; | |
722 | goto free_hwmon; | |
723 | } | |
d560168b | 724 | |
3bf8bdcf | 725 | attrs = __hwmon_create_attrs(drvdata, chip); |
d560168b GR |
726 | if (IS_ERR(attrs)) { |
727 | err = PTR_ERR(attrs); | |
728 | goto free_hwmon; | |
729 | } | |
730 | ||
731 | hwdev->group.attrs = attrs; | |
732 | ngroups = 0; | |
733 | hwdev->groups[ngroups++] = &hwdev->group; | |
734 | ||
735 | if (groups) { | |
736 | for (i = 0; groups[i]; i++) | |
737 | hwdev->groups[ngroups++] = groups[i]; | |
738 | } | |
739 | ||
740 | hdev->groups = hwdev->groups; | |
741 | } else { | |
742 | hdev->groups = groups; | |
743 | } | |
744 | ||
bab2243c | 745 | hwdev->name = name; |
d560168b GR |
746 | hdev->class = &hwmon_class; |
747 | hdev->parent = dev; | |
748 | hdev->of_node = dev ? dev->of_node : NULL; | |
749 | hwdev->chip = chip; | |
750 | dev_set_drvdata(hdev, drvdata); | |
751 | dev_set_name(hdev, HWMON_ID_FORMAT, id); | |
752 | err = device_register(hdev); | |
bab2243c | 753 | if (err) |
d560168b GR |
754 | goto free_hwmon; |
755 | ||
1597b374 GR |
756 | INIT_LIST_HEAD(&hwdev->tzdata); |
757 | ||
c41dd48e | 758 | if (dev && dev->of_node && chip && chip->ops->read && |
d560168b GR |
759 | chip->info[0]->type == hwmon_chip && |
760 | (chip->info[0]->config[0] & HWMON_C_REGISTER_TZ)) { | |
44e3ad88 AM |
761 | err = hwmon_thermal_register_sensors(hdev); |
762 | if (err) { | |
763 | device_unregister(hdev); | |
764 | /* | |
765 | * Don't worry about hwdev; hwmon_dev_release(), called | |
766 | * from device_unregister(), will free it. | |
767 | */ | |
768 | goto ida_remove; | |
d560168b GR |
769 | } |
770 | } | |
bab2243c | 771 | |
d560168b | 772 | return hdev; |
bab2243c | 773 | |
d560168b | 774 | free_hwmon: |
3bf8bdcf | 775 | hwmon_dev_release(hdev); |
bab2243c GR |
776 | ida_remove: |
777 | ida_simple_remove(&hwmon_ida, id); | |
778 | return ERR_PTR(err); | |
779 | } | |
d560168b GR |
780 | |
781 | /** | |
782 | * hwmon_device_register_with_groups - register w/ hwmon | |
783 | * @dev: the parent device | |
784 | * @name: hwmon name attribute | |
785 | * @drvdata: driver data to attach to created device | |
786 | * @groups: List of attribute groups to create | |
787 | * | |
788 | * hwmon_device_unregister() must be called when the device is no | |
789 | * longer needed. | |
790 | * | |
791 | * Returns the pointer to the new device. | |
792 | */ | |
793 | struct device * | |
794 | hwmon_device_register_with_groups(struct device *dev, const char *name, | |
795 | void *drvdata, | |
796 | const struct attribute_group **groups) | |
797 | { | |
8353863a GR |
798 | if (!name) |
799 | return ERR_PTR(-EINVAL); | |
800 | ||
d560168b GR |
801 | return __hwmon_device_register(dev, name, drvdata, NULL, groups); |
802 | } | |
bab2243c | 803 | EXPORT_SYMBOL_GPL(hwmon_device_register_with_groups); |
1236441f | 804 | |
d560168b GR |
805 | /** |
806 | * hwmon_device_register_with_info - register w/ hwmon | |
807 | * @dev: the parent device | |
808 | * @name: hwmon name attribute | |
809 | * @drvdata: driver data to attach to created device | |
3870945a | 810 | * @chip: pointer to hwmon chip information |
848ba0a2 | 811 | * @extra_groups: pointer to list of additional non-standard attribute groups |
d560168b GR |
812 | * |
813 | * hwmon_device_unregister() must be called when the device is no | |
814 | * longer needed. | |
815 | * | |
816 | * Returns the pointer to the new device. | |
817 | */ | |
818 | struct device * | |
819 | hwmon_device_register_with_info(struct device *dev, const char *name, | |
820 | void *drvdata, | |
821 | const struct hwmon_chip_info *chip, | |
848ba0a2 | 822 | const struct attribute_group **extra_groups) |
d560168b | 823 | { |
8353863a GR |
824 | if (!name) |
825 | return ERR_PTR(-EINVAL); | |
826 | ||
239552f4 | 827 | if (chip && (!chip->ops || !chip->ops->is_visible || !chip->info)) |
d560168b GR |
828 | return ERR_PTR(-EINVAL); |
829 | ||
59df4f4e LM |
830 | if (chip && !dev) |
831 | return ERR_PTR(-EINVAL); | |
832 | ||
848ba0a2 | 833 | return __hwmon_device_register(dev, name, drvdata, chip, extra_groups); |
d560168b GR |
834 | } |
835 | EXPORT_SYMBOL_GPL(hwmon_device_register_with_info); | |
836 | ||
bab2243c GR |
837 | /** |
838 | * hwmon_device_register - register w/ hwmon | |
839 | * @dev: the device to register | |
840 | * | |
841 | * hwmon_device_unregister() must be called when the device is no | |
842 | * longer needed. | |
843 | * | |
844 | * Returns the pointer to the new device. | |
845 | */ | |
846 | struct device *hwmon_device_register(struct device *dev) | |
847 | { | |
af1bd36c GR |
848 | dev_warn(dev, |
849 | "hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().\n"); | |
850 | ||
8353863a | 851 | return __hwmon_device_register(dev, NULL, NULL, NULL, NULL); |
1236441f | 852 | } |
839a9eef | 853 | EXPORT_SYMBOL_GPL(hwmon_device_register); |
1236441f MH |
854 | |
855 | /** | |
856 | * hwmon_device_unregister - removes the previously registered class device | |
857 | * | |
1beeffe4 | 858 | * @dev: the class device to destroy |
1236441f | 859 | */ |
1beeffe4 | 860 | void hwmon_device_unregister(struct device *dev) |
1236441f MH |
861 | { |
862 | int id; | |
863 | ||
739cf3a2 | 864 | if (likely(sscanf(dev_name(dev), HWMON_ID_FORMAT, &id) == 1)) { |
1beeffe4 | 865 | device_unregister(dev); |
4ca5f468 | 866 | ida_simple_remove(&hwmon_ida, id); |
1236441f | 867 | } else |
1beeffe4 | 868 | dev_dbg(dev->parent, |
1236441f MH |
869 | "hwmon_device_unregister() failed: bad class ID!\n"); |
870 | } | |
839a9eef | 871 | EXPORT_SYMBOL_GPL(hwmon_device_unregister); |
1236441f | 872 | |
74188cba GR |
873 | static void devm_hwmon_release(struct device *dev, void *res) |
874 | { | |
875 | struct device *hwdev = *(struct device **)res; | |
876 | ||
877 | hwmon_device_unregister(hwdev); | |
878 | } | |
879 | ||
880 | /** | |
881 | * devm_hwmon_device_register_with_groups - register w/ hwmon | |
882 | * @dev: the parent device | |
883 | * @name: hwmon name attribute | |
884 | * @drvdata: driver data to attach to created device | |
885 | * @groups: List of attribute groups to create | |
886 | * | |
887 | * Returns the pointer to the new device. The new device is automatically | |
888 | * unregistered with the parent device. | |
889 | */ | |
890 | struct device * | |
891 | devm_hwmon_device_register_with_groups(struct device *dev, const char *name, | |
892 | void *drvdata, | |
893 | const struct attribute_group **groups) | |
894 | { | |
895 | struct device **ptr, *hwdev; | |
896 | ||
897 | if (!dev) | |
898 | return ERR_PTR(-EINVAL); | |
899 | ||
900 | ptr = devres_alloc(devm_hwmon_release, sizeof(*ptr), GFP_KERNEL); | |
901 | if (!ptr) | |
902 | return ERR_PTR(-ENOMEM); | |
903 | ||
904 | hwdev = hwmon_device_register_with_groups(dev, name, drvdata, groups); | |
905 | if (IS_ERR(hwdev)) | |
906 | goto error; | |
907 | ||
908 | *ptr = hwdev; | |
909 | devres_add(dev, ptr); | |
910 | return hwdev; | |
911 | ||
912 | error: | |
913 | devres_free(ptr); | |
914 | return hwdev; | |
915 | } | |
916 | EXPORT_SYMBOL_GPL(devm_hwmon_device_register_with_groups); | |
917 | ||
d560168b GR |
918 | /** |
919 | * devm_hwmon_device_register_with_info - register w/ hwmon | |
3870945a GR |
920 | * @dev: the parent device |
921 | * @name: hwmon name attribute | |
922 | * @drvdata: driver data to attach to created device | |
923 | * @chip: pointer to hwmon chip information | |
924 | * @groups: pointer to list of driver specific attribute groups | |
d560168b GR |
925 | * |
926 | * Returns the pointer to the new device. The new device is automatically | |
927 | * unregistered with the parent device. | |
928 | */ | |
929 | struct device * | |
930 | devm_hwmon_device_register_with_info(struct device *dev, const char *name, | |
931 | void *drvdata, | |
932 | const struct hwmon_chip_info *chip, | |
933 | const struct attribute_group **groups) | |
934 | { | |
935 | struct device **ptr, *hwdev; | |
936 | ||
937 | if (!dev) | |
938 | return ERR_PTR(-EINVAL); | |
939 | ||
940 | ptr = devres_alloc(devm_hwmon_release, sizeof(*ptr), GFP_KERNEL); | |
941 | if (!ptr) | |
942 | return ERR_PTR(-ENOMEM); | |
943 | ||
944 | hwdev = hwmon_device_register_with_info(dev, name, drvdata, chip, | |
945 | groups); | |
946 | if (IS_ERR(hwdev)) | |
947 | goto error; | |
948 | ||
949 | *ptr = hwdev; | |
950 | devres_add(dev, ptr); | |
951 | ||
952 | return hwdev; | |
953 | ||
954 | error: | |
955 | devres_free(ptr); | |
956 | return hwdev; | |
957 | } | |
958 | EXPORT_SYMBOL_GPL(devm_hwmon_device_register_with_info); | |
959 | ||
74188cba GR |
960 | static int devm_hwmon_match(struct device *dev, void *res, void *data) |
961 | { | |
962 | struct device **hwdev = res; | |
963 | ||
964 | return *hwdev == data; | |
965 | } | |
966 | ||
967 | /** | |
968 | * devm_hwmon_device_unregister - removes a previously registered hwmon device | |
969 | * | |
970 | * @dev: the parent device of the device to unregister | |
971 | */ | |
972 | void devm_hwmon_device_unregister(struct device *dev) | |
973 | { | |
974 | WARN_ON(devres_release(dev, devm_hwmon_release, devm_hwmon_match, dev)); | |
975 | } | |
976 | EXPORT_SYMBOL_GPL(devm_hwmon_device_unregister); | |
977 | ||
2958b1ec JD |
978 | static void __init hwmon_pci_quirks(void) |
979 | { | |
980 | #if defined CONFIG_X86 && defined CONFIG_PCI | |
981 | struct pci_dev *sb; | |
982 | u16 base; | |
983 | u8 enable; | |
984 | ||
985 | /* Open access to 0x295-0x296 on MSI MS-7031 */ | |
986 | sb = pci_get_device(PCI_VENDOR_ID_ATI, 0x436c, NULL); | |
d6dab7dd JD |
987 | if (sb) { |
988 | if (sb->subsystem_vendor == 0x1462 && /* MSI */ | |
989 | sb->subsystem_device == 0x0031) { /* MS-7031 */ | |
990 | pci_read_config_byte(sb, 0x48, &enable); | |
991 | pci_read_config_word(sb, 0x64, &base); | |
992 | ||
993 | if (base == 0 && !(enable & BIT(2))) { | |
994 | dev_info(&sb->dev, | |
995 | "Opening wide generic port at 0x295\n"); | |
996 | pci_write_config_word(sb, 0x64, 0x295); | |
997 | pci_write_config_byte(sb, 0x48, | |
998 | enable | BIT(2)); | |
999 | } | |
2958b1ec | 1000 | } |
d6dab7dd | 1001 | pci_dev_put(sb); |
2958b1ec JD |
1002 | } |
1003 | #endif | |
1004 | } | |
1005 | ||
1236441f MH |
1006 | static int __init hwmon_init(void) |
1007 | { | |
bab2243c GR |
1008 | int err; |
1009 | ||
2958b1ec JD |
1010 | hwmon_pci_quirks(); |
1011 | ||
bab2243c GR |
1012 | err = class_register(&hwmon_class); |
1013 | if (err) { | |
1014 | pr_err("couldn't register hwmon sysfs class\n"); | |
1015 | return err; | |
1236441f MH |
1016 | } |
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | static void __exit hwmon_exit(void) | |
1021 | { | |
bab2243c | 1022 | class_unregister(&hwmon_class); |
1236441f MH |
1023 | } |
1024 | ||
37f54ee5 | 1025 | subsys_initcall(hwmon_init); |
1236441f MH |
1026 | module_exit(hwmon_exit); |
1027 | ||
1236441f MH |
1028 | MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>"); |
1029 | MODULE_DESCRIPTION("hardware monitoring sysfs/class support"); | |
1030 | MODULE_LICENSE("GPL"); | |
1031 |