1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * vt8231.c - Part of lm_sensors, Linux kernel modules |
4 | * for hardware monitoring |
5 | * |
6 | * Copyright (c) 2005 Roger Lucas <vt8231@hiddenengine.co.uk> |
7 | * Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> |
8 | * Aaron M. Marsh <amarsh@sdf.lonestar.org> |
9 | */ |
10 | |
11 | /* |
12 | * Supports VIA VT8231 South Bridge embedded sensors |
13 | */ |
14 | |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
16 | |
17 | #include <linux/module.h> |
18 | #include <linux/init.h> |
19 | #include <linux/slab.h> |
20 | #include <linux/pci.h> |
21 | #include <linux/jiffies.h> |
22 | #include <linux/platform_device.h> |
23 | #include <linux/hwmon.h> |
24 | #include <linux/hwmon-sysfs.h> |
25 | #include <linux/err.h> |
26 | #include <linux/mutex.h> |
27 | #include <linux/acpi.h> |
28 | #include <linux/io.h> |
29 | |
30 | static int force_addr; |
31 | module_param(force_addr, int, 0); |
32 | MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors" ); |
33 | |
34 | static struct platform_device *pdev; |
35 | |
36 | #define VT8231_EXTENT 0x80 |
37 | #define VT8231_BASE_REG 0x70 |
38 | #define VT8231_ENABLE_REG 0x74 |
39 | |
40 | #define DRIVER_NAME "vt8231" |
41 | |
42 | /* |
43 | * The VT8231 registers |
44 | * |
45 | * The reset value for the input channel configuration is used (Reg 0x4A=0x07) |
46 | * which sets the selected inputs marked with '*' below if multiple options are |
47 | * possible: |
48 | * |
49 | * Voltage Mode Temperature Mode |
50 | * Sensor Linux Id Linux Id VIA Id |
51 | * -------- -------- -------- ------ |
52 | * CPU Diode N/A temp1 0 |
53 | * UIC1 in0 temp2 * 1 |
54 | * UIC2 in1 * temp3 2 |
55 | * UIC3 in2 * temp4 3 |
56 | * UIC4 in3 * temp5 4 |
57 | * UIC5 in4 * temp6 5 |
58 | * 3.3V in5 N/A |
59 | * |
60 | * Note that the BIOS may set the configuration register to a different value |
61 | * to match the motherboard configuration. |
62 | */ |
63 | |
64 | /* fans numbered 0-1 */ |
65 | #define VT8231_REG_FAN_MIN(nr) (0x3b + (nr)) |
66 | #define VT8231_REG_FAN(nr) (0x29 + (nr)) |
67 | |
68 | /* Voltage inputs numbered 0-5 */ |
69 | |
70 | static const u8 regvolt[] = { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 }; |
71 | static const u8 regvoltmax[] = { 0x3d, 0x2b, 0x2d, 0x2f, 0x31, 0x33 }; |
72 | static const u8 regvoltmin[] = { 0x3e, 0x2c, 0x2e, 0x30, 0x32, 0x34 }; |
73 | |
74 | /* |
75 | * Temperatures are numbered 1-6 according to the Linux kernel specification. |
76 | * |
77 | * In the VIA datasheet, however, the temperatures are numbered from zero. |
78 | * Since it is important that this driver can easily be compared to the VIA |
79 | * datasheet, we will use the VIA numbering within this driver and map the |
80 | * kernel sysfs device name to the VIA number in the sysfs callback. |
81 | */ |
82 | |
83 | #define VT8231_REG_TEMP_LOW01 0x49 |
84 | #define VT8231_REG_TEMP_LOW25 0x4d |
85 | |
86 | static const u8 regtemp[] = { 0x1f, 0x21, 0x22, 0x23, 0x24, 0x25 }; |
87 | static const u8 regtempmax[] = { 0x39, 0x3d, 0x2b, 0x2d, 0x2f, 0x31 }; |
88 | static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 }; |
89 | |
90 | #define TEMP_FROM_REG(reg) (((253 * 4 - (reg)) * 550 + 105) / 210) |
91 | #define TEMP_MAXMIN_FROM_REG(reg) (((253 - (reg)) * 2200 + 105) / 210) |
92 | #define TEMP_MAXMIN_TO_REG(val) (253 - ((val) * 210 + 1100) / 2200) |
93 | |
94 | #define VT8231_REG_CONFIG 0x40 |
95 | #define VT8231_REG_ALARM1 0x41 |
96 | #define VT8231_REG_ALARM2 0x42 |
97 | #define VT8231_REG_FANDIV 0x47 |
98 | #define VT8231_REG_UCH_CONFIG 0x4a |
99 | #define VT8231_REG_TEMP1_CONFIG 0x4b |
100 | #define VT8231_REG_TEMP2_CONFIG 0x4c |
101 | |
102 | /* |
103 | * temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux |
104 | * numbering |
105 | */ |
106 | #define ISTEMP(i, ch_config) ((i) == 0 ? 1 : \ |
107 | ((ch_config) >> ((i)+1)) & 0x01) |
108 | /* voltages 0-5 */ |
109 | #define ISVOLT(i, ch_config) ((i) == 5 ? 1 : \ |
110 | !(((ch_config) >> ((i)+2)) & 0x01)) |
111 | |
112 | #define DIV_FROM_REG(val) (1 << (val)) |
113 | |
114 | /* |
115 | * NB The values returned here are NOT temperatures. The calibration curves |
116 | * for the thermistor curves are board-specific and must go in the |
117 | * sensors.conf file. Temperature sensors are actually ten bits, but the |
118 | * VIA datasheet only considers the 8 MSBs obtained from the regtemp[] |
119 | * register. The temperature value returned should have a magnitude of 3, |
120 | * so we use the VIA scaling as the "true" scaling and use the remaining 2 |
121 | * LSBs as fractional precision. |
122 | * |
123 | * All the on-chip hardware temperature comparisons for the alarms are only |
124 | * 8-bits wide, and compare against the 8 MSBs of the temperature. The bits |
125 | * in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are |
126 | * ignored. |
127 | */ |
128 | |
129 | /* |
130 | ****** FAN RPM CONVERSIONS ******** |
131 | * This chip saturates back at 0, not at 255 like many the other chips. |
132 | * So, 0 means 0 RPM |
133 | */ |
134 | static inline u8 FAN_TO_REG(long rpm, int div) |
135 | { |
136 | if (rpm <= 0 || rpm > 1310720) |
137 | return 0; |
138 | return clamp_val(1310720 / (rpm * div), 1, 255); |
139 | } |
140 | |
141 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : 1310720 / ((val) * (div))) |
142 | |
143 | struct vt8231_data { |
144 | unsigned short addr; |
145 | const char *name; |
146 | |
147 | struct mutex update_lock; |
148 | struct device *hwmon_dev; |
149 | bool valid; /* true if following fields are valid */ |
150 | unsigned long last_updated; /* In jiffies */ |
151 | |
152 | u8 in[6]; /* Register value */ |
153 | u8 in_max[6]; /* Register value */ |
154 | u8 in_min[6]; /* Register value */ |
155 | u16 temp[6]; /* Register value 10 bit, right aligned */ |
156 | u8 temp_max[6]; /* Register value */ |
157 | u8 temp_min[6]; /* Register value */ |
158 | u8 fan[2]; /* Register value */ |
159 | u8 fan_min[2]; /* Register value */ |
160 | u8 fan_div[2]; /* Register encoding, shifted right */ |
161 | u16 alarms; /* Register encoding */ |
162 | u8 uch_config; |
163 | }; |
164 | |
165 | static struct pci_dev *s_bridge; |
166 | |
167 | static inline int vt8231_read_value(struct vt8231_data *data, u8 reg) |
168 | { |
169 | return inb_p(port: data->addr + reg); |
170 | } |
171 | |
172 | static inline void vt8231_write_value(struct vt8231_data *data, u8 reg, |
173 | u8 value) |
174 | { |
175 | outb_p(value, port: data->addr + reg); |
176 | } |
177 | |
178 | static struct vt8231_data *vt8231_update_device(struct device *dev) |
179 | { |
180 | struct vt8231_data *data = dev_get_drvdata(dev); |
181 | int i; |
182 | u16 low; |
183 | |
184 | mutex_lock(&data->update_lock); |
185 | |
186 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
187 | || !data->valid) { |
188 | for (i = 0; i < 6; i++) { |
189 | if (ISVOLT(i, data->uch_config)) { |
190 | data->in[i] = vt8231_read_value(data, |
191 | reg: regvolt[i]); |
192 | data->in_min[i] = vt8231_read_value(data, |
193 | reg: regvoltmin[i]); |
194 | data->in_max[i] = vt8231_read_value(data, |
195 | reg: regvoltmax[i]); |
196 | } |
197 | } |
198 | for (i = 0; i < 2; i++) { |
199 | data->fan[i] = vt8231_read_value(data, |
200 | VT8231_REG_FAN(i)); |
201 | data->fan_min[i] = vt8231_read_value(data, |
202 | VT8231_REG_FAN_MIN(i)); |
203 | } |
204 | |
205 | low = vt8231_read_value(data, VT8231_REG_TEMP_LOW01); |
206 | low = (low >> 6) | ((low & 0x30) >> 2) |
207 | | (vt8231_read_value(data, VT8231_REG_TEMP_LOW25) << 4); |
208 | for (i = 0; i < 6; i++) { |
209 | if (ISTEMP(i, data->uch_config)) { |
210 | data->temp[i] = (vt8231_read_value(data, |
211 | reg: regtemp[i]) << 2) |
212 | | ((low >> (2 * i)) & 0x03); |
213 | data->temp_max[i] = vt8231_read_value(data, |
214 | reg: regtempmax[i]); |
215 | data->temp_min[i] = vt8231_read_value(data, |
216 | reg: regtempmin[i]); |
217 | } |
218 | } |
219 | |
220 | i = vt8231_read_value(data, VT8231_REG_FANDIV); |
221 | data->fan_div[0] = (i >> 4) & 0x03; |
222 | data->fan_div[1] = i >> 6; |
223 | data->alarms = vt8231_read_value(data, VT8231_REG_ALARM1) | |
224 | (vt8231_read_value(data, VT8231_REG_ALARM2) << 8); |
225 | |
226 | /* Set alarm flags correctly */ |
227 | if (!data->fan[0] && data->fan_min[0]) |
228 | data->alarms |= 0x40; |
229 | else if (data->fan[0] && !data->fan_min[0]) |
230 | data->alarms &= ~0x40; |
231 | |
232 | if (!data->fan[1] && data->fan_min[1]) |
233 | data->alarms |= 0x80; |
234 | else if (data->fan[1] && !data->fan_min[1]) |
235 | data->alarms &= ~0x80; |
236 | |
237 | data->last_updated = jiffies; |
238 | data->valid = true; |
239 | } |
240 | |
241 | mutex_unlock(lock: &data->update_lock); |
242 | |
243 | return data; |
244 | } |
245 | |
246 | /* following are the sysfs callback functions */ |
247 | static ssize_t in_show(struct device *dev, struct device_attribute *attr, |
248 | char *buf) |
249 | { |
250 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
251 | int nr = sensor_attr->index; |
252 | struct vt8231_data *data = vt8231_update_device(dev); |
253 | |
254 | return sprintf(buf, fmt: "%d\n" , ((data->in[nr] - 3) * 10000) / 958); |
255 | } |
256 | |
257 | static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, |
258 | char *buf) |
259 | { |
260 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
261 | int nr = sensor_attr->index; |
262 | struct vt8231_data *data = vt8231_update_device(dev); |
263 | |
264 | return sprintf(buf, fmt: "%d\n" , ((data->in_min[nr] - 3) * 10000) / 958); |
265 | } |
266 | |
267 | static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, |
268 | char *buf) |
269 | { |
270 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
271 | int nr = sensor_attr->index; |
272 | struct vt8231_data *data = vt8231_update_device(dev); |
273 | |
274 | return sprintf(buf, fmt: "%d\n" , (((data->in_max[nr] - 3) * 10000) / 958)); |
275 | } |
276 | |
277 | static ssize_t in_min_store(struct device *dev, struct device_attribute *attr, |
278 | const char *buf, size_t count) |
279 | { |
280 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
281 | int nr = sensor_attr->index; |
282 | struct vt8231_data *data = dev_get_drvdata(dev); |
283 | unsigned long val; |
284 | int err; |
285 | |
286 | err = kstrtoul(s: buf, base: 10, res: &val); |
287 | if (err) |
288 | return err; |
289 | |
290 | mutex_lock(&data->update_lock); |
291 | data->in_min[nr] = clamp_val(((val * 958) / 10000) + 3, 0, 255); |
292 | vt8231_write_value(data, reg: regvoltmin[nr], value: data->in_min[nr]); |
293 | mutex_unlock(lock: &data->update_lock); |
294 | return count; |
295 | } |
296 | |
297 | static ssize_t in_max_store(struct device *dev, struct device_attribute *attr, |
298 | const char *buf, size_t count) |
299 | { |
300 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
301 | int nr = sensor_attr->index; |
302 | struct vt8231_data *data = dev_get_drvdata(dev); |
303 | unsigned long val; |
304 | int err; |
305 | |
306 | err = kstrtoul(s: buf, base: 10, res: &val); |
307 | if (err) |
308 | return err; |
309 | |
310 | mutex_lock(&data->update_lock); |
311 | data->in_max[nr] = clamp_val(((val * 958) / 10000) + 3, 0, 255); |
312 | vt8231_write_value(data, reg: regvoltmax[nr], value: data->in_max[nr]); |
313 | mutex_unlock(lock: &data->update_lock); |
314 | return count; |
315 | } |
316 | |
317 | /* Special case for input 5 as this has 3.3V scaling built into the chip */ |
318 | static ssize_t in5_input_show(struct device *dev, |
319 | struct device_attribute *attr, char *buf) |
320 | { |
321 | struct vt8231_data *data = vt8231_update_device(dev); |
322 | |
323 | return sprintf(buf, fmt: "%d\n" , |
324 | (((data->in[5] - 3) * 10000 * 54) / (958 * 34))); |
325 | } |
326 | |
327 | static ssize_t in5_min_show(struct device *dev, struct device_attribute *attr, |
328 | char *buf) |
329 | { |
330 | struct vt8231_data *data = vt8231_update_device(dev); |
331 | |
332 | return sprintf(buf, fmt: "%d\n" , |
333 | (((data->in_min[5] - 3) * 10000 * 54) / (958 * 34))); |
334 | } |
335 | |
336 | static ssize_t in5_max_show(struct device *dev, struct device_attribute *attr, |
337 | char *buf) |
338 | { |
339 | struct vt8231_data *data = vt8231_update_device(dev); |
340 | |
341 | return sprintf(buf, fmt: "%d\n" , |
342 | (((data->in_max[5] - 3) * 10000 * 54) / (958 * 34))); |
343 | } |
344 | |
345 | static ssize_t in5_min_store(struct device *dev, |
346 | struct device_attribute *attr, const char *buf, |
347 | size_t count) |
348 | { |
349 | struct vt8231_data *data = dev_get_drvdata(dev); |
350 | unsigned long val; |
351 | int err; |
352 | |
353 | err = kstrtoul(s: buf, base: 10, res: &val); |
354 | if (err) |
355 | return err; |
356 | |
357 | mutex_lock(&data->update_lock); |
358 | data->in_min[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
359 | 0, 255); |
360 | vt8231_write_value(data, reg: regvoltmin[5], value: data->in_min[5]); |
361 | mutex_unlock(lock: &data->update_lock); |
362 | return count; |
363 | } |
364 | |
365 | static ssize_t in5_max_store(struct device *dev, |
366 | struct device_attribute *attr, const char *buf, |
367 | size_t count) |
368 | { |
369 | struct vt8231_data *data = dev_get_drvdata(dev); |
370 | unsigned long val; |
371 | int err; |
372 | |
373 | err = kstrtoul(s: buf, base: 10, res: &val); |
374 | if (err) |
375 | return err; |
376 | |
377 | mutex_lock(&data->update_lock); |
378 | data->in_max[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
379 | 0, 255); |
380 | vt8231_write_value(data, reg: regvoltmax[5], value: data->in_max[5]); |
381 | mutex_unlock(lock: &data->update_lock); |
382 | return count; |
383 | } |
384 | |
385 | static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0); |
386 | static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); |
387 | static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); |
388 | static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1); |
389 | static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); |
390 | static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); |
391 | static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2); |
392 | static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); |
393 | static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); |
394 | static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3); |
395 | static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); |
396 | static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); |
397 | static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4); |
398 | static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); |
399 | static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); |
400 | |
401 | static DEVICE_ATTR_RO(in5_input); |
402 | static DEVICE_ATTR_RW(in5_min); |
403 | static DEVICE_ATTR_RW(in5_max); |
404 | |
405 | /* Temperatures */ |
406 | static ssize_t temp1_input_show(struct device *dev, |
407 | struct device_attribute *attr, char *buf) |
408 | { |
409 | struct vt8231_data *data = vt8231_update_device(dev); |
410 | return sprintf(buf, fmt: "%d\n" , data->temp[0] * 250); |
411 | } |
412 | |
413 | static ssize_t temp1_max_show(struct device *dev, struct device_attribute *attr, |
414 | char *buf) |
415 | { |
416 | struct vt8231_data *data = vt8231_update_device(dev); |
417 | return sprintf(buf, fmt: "%d\n" , data->temp_max[0] * 1000); |
418 | } |
419 | |
420 | static ssize_t temp1_max_hyst_show(struct device *dev, |
421 | struct device_attribute *attr, char *buf) |
422 | { |
423 | struct vt8231_data *data = vt8231_update_device(dev); |
424 | return sprintf(buf, fmt: "%d\n" , data->temp_min[0] * 1000); |
425 | } |
426 | |
427 | static ssize_t temp1_max_store(struct device *dev, |
428 | struct device_attribute *attr, const char *buf, |
429 | size_t count) |
430 | { |
431 | struct vt8231_data *data = dev_get_drvdata(dev); |
432 | long val; |
433 | int err; |
434 | |
435 | err = kstrtol(s: buf, base: 10, res: &val); |
436 | if (err) |
437 | return err; |
438 | |
439 | mutex_lock(&data->update_lock); |
440 | data->temp_max[0] = clamp_val((val + 500) / 1000, 0, 255); |
441 | vt8231_write_value(data, reg: regtempmax[0], value: data->temp_max[0]); |
442 | mutex_unlock(lock: &data->update_lock); |
443 | return count; |
444 | } |
445 | static ssize_t temp1_max_hyst_store(struct device *dev, |
446 | struct device_attribute *attr, |
447 | const char *buf, size_t count) |
448 | { |
449 | struct vt8231_data *data = dev_get_drvdata(dev); |
450 | long val; |
451 | int err; |
452 | |
453 | err = kstrtol(s: buf, base: 10, res: &val); |
454 | if (err) |
455 | return err; |
456 | |
457 | mutex_lock(&data->update_lock); |
458 | data->temp_min[0] = clamp_val((val + 500) / 1000, 0, 255); |
459 | vt8231_write_value(data, reg: regtempmin[0], value: data->temp_min[0]); |
460 | mutex_unlock(lock: &data->update_lock); |
461 | return count; |
462 | } |
463 | |
464 | static ssize_t temp_show(struct device *dev, struct device_attribute *attr, |
465 | char *buf) |
466 | { |
467 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
468 | int nr = sensor_attr->index; |
469 | struct vt8231_data *data = vt8231_update_device(dev); |
470 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(data->temp[nr])); |
471 | } |
472 | |
473 | static ssize_t temp_max_show(struct device *dev, |
474 | struct device_attribute *attr, char *buf) |
475 | { |
476 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
477 | int nr = sensor_attr->index; |
478 | struct vt8231_data *data = vt8231_update_device(dev); |
479 | return sprintf(buf, fmt: "%d\n" , TEMP_MAXMIN_FROM_REG(data->temp_max[nr])); |
480 | } |
481 | |
482 | static ssize_t temp_min_show(struct device *dev, |
483 | struct device_attribute *attr, char *buf) |
484 | { |
485 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
486 | int nr = sensor_attr->index; |
487 | struct vt8231_data *data = vt8231_update_device(dev); |
488 | return sprintf(buf, fmt: "%d\n" , TEMP_MAXMIN_FROM_REG(data->temp_min[nr])); |
489 | } |
490 | |
491 | static ssize_t temp_max_store(struct device *dev, |
492 | struct device_attribute *attr, const char *buf, |
493 | size_t count) |
494 | { |
495 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
496 | int nr = sensor_attr->index; |
497 | struct vt8231_data *data = dev_get_drvdata(dev); |
498 | long val; |
499 | int err; |
500 | |
501 | err = kstrtol(s: buf, base: 10, res: &val); |
502 | if (err) |
503 | return err; |
504 | |
505 | mutex_lock(&data->update_lock); |
506 | data->temp_max[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
507 | vt8231_write_value(data, reg: regtempmax[nr], value: data->temp_max[nr]); |
508 | mutex_unlock(lock: &data->update_lock); |
509 | return count; |
510 | } |
511 | static ssize_t temp_min_store(struct device *dev, |
512 | struct device_attribute *attr, const char *buf, |
513 | size_t count) |
514 | { |
515 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
516 | int nr = sensor_attr->index; |
517 | struct vt8231_data *data = dev_get_drvdata(dev); |
518 | long val; |
519 | int err; |
520 | |
521 | err = kstrtol(s: buf, base: 10, res: &val); |
522 | if (err) |
523 | return err; |
524 | |
525 | mutex_lock(&data->update_lock); |
526 | data->temp_min[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
527 | vt8231_write_value(data, reg: regtempmin[nr], value: data->temp_min[nr]); |
528 | mutex_unlock(lock: &data->update_lock); |
529 | return count; |
530 | } |
531 | |
532 | /* |
533 | * Note that these map the Linux temperature sensor numbering (1-6) to the VIA |
534 | * temperature sensor numbering (0-5) |
535 | */ |
536 | |
537 | static DEVICE_ATTR_RO(temp1_input); |
538 | static DEVICE_ATTR_RW(temp1_max); |
539 | static DEVICE_ATTR_RW(temp1_max_hyst); |
540 | |
541 | static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); |
542 | static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); |
543 | static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_min, 1); |
544 | static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2); |
545 | static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2); |
546 | static SENSOR_DEVICE_ATTR_RW(temp3_max_hyst, temp_min, 2); |
547 | static SENSOR_DEVICE_ATTR_RO(temp4_input, temp, 3); |
548 | static SENSOR_DEVICE_ATTR_RW(temp4_max, temp_max, 3); |
549 | static SENSOR_DEVICE_ATTR_RW(temp4_max_hyst, temp_min, 3); |
550 | static SENSOR_DEVICE_ATTR_RO(temp5_input, temp, 4); |
551 | static SENSOR_DEVICE_ATTR_RW(temp5_max, temp_max, 4); |
552 | static SENSOR_DEVICE_ATTR_RW(temp5_max_hyst, temp_min, 4); |
553 | static SENSOR_DEVICE_ATTR_RO(temp6_input, temp, 5); |
554 | static SENSOR_DEVICE_ATTR_RW(temp6_max, temp_max, 5); |
555 | static SENSOR_DEVICE_ATTR_RW(temp6_max_hyst, temp_min, 5); |
556 | |
557 | /* Fans */ |
558 | static ssize_t fan_show(struct device *dev, struct device_attribute *attr, |
559 | char *buf) |
560 | { |
561 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
562 | int nr = sensor_attr->index; |
563 | struct vt8231_data *data = vt8231_update_device(dev); |
564 | return sprintf(buf, fmt: "%d\n" , FAN_FROM_REG(data->fan[nr], |
565 | DIV_FROM_REG(data->fan_div[nr]))); |
566 | } |
567 | |
568 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
569 | char *buf) |
570 | { |
571 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
572 | int nr = sensor_attr->index; |
573 | struct vt8231_data *data = vt8231_update_device(dev); |
574 | return sprintf(buf, fmt: "%d\n" , FAN_FROM_REG(data->fan_min[nr], |
575 | DIV_FROM_REG(data->fan_div[nr]))); |
576 | } |
577 | |
578 | static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, |
579 | char *buf) |
580 | { |
581 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
582 | int nr = sensor_attr->index; |
583 | struct vt8231_data *data = vt8231_update_device(dev); |
584 | return sprintf(buf, fmt: "%d\n" , DIV_FROM_REG(data->fan_div[nr])); |
585 | } |
586 | |
587 | static ssize_t fan_min_store(struct device *dev, |
588 | struct device_attribute *attr, const char *buf, |
589 | size_t count) |
590 | { |
591 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
592 | int nr = sensor_attr->index; |
593 | struct vt8231_data *data = dev_get_drvdata(dev); |
594 | unsigned long val; |
595 | int err; |
596 | |
597 | err = kstrtoul(s: buf, base: 10, res: &val); |
598 | if (err) |
599 | return err; |
600 | |
601 | mutex_lock(&data->update_lock); |
602 | data->fan_min[nr] = FAN_TO_REG(rpm: val, DIV_FROM_REG(data->fan_div[nr])); |
603 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), value: data->fan_min[nr]); |
604 | mutex_unlock(lock: &data->update_lock); |
605 | return count; |
606 | } |
607 | |
608 | static ssize_t fan_div_store(struct device *dev, |
609 | struct device_attribute *attr, const char *buf, |
610 | size_t count) |
611 | { |
612 | struct vt8231_data *data = dev_get_drvdata(dev); |
613 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
614 | unsigned long val; |
615 | int nr = sensor_attr->index; |
616 | int old = vt8231_read_value(data, VT8231_REG_FANDIV); |
617 | long min = FAN_FROM_REG(data->fan_min[nr], |
618 | DIV_FROM_REG(data->fan_div[nr])); |
619 | int err; |
620 | |
621 | err = kstrtoul(s: buf, base: 10, res: &val); |
622 | if (err) |
623 | return err; |
624 | |
625 | mutex_lock(&data->update_lock); |
626 | switch (val) { |
627 | case 1: |
628 | data->fan_div[nr] = 0; |
629 | break; |
630 | case 2: |
631 | data->fan_div[nr] = 1; |
632 | break; |
633 | case 4: |
634 | data->fan_div[nr] = 2; |
635 | break; |
636 | case 8: |
637 | data->fan_div[nr] = 3; |
638 | break; |
639 | default: |
640 | dev_err(dev, |
641 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n" , |
642 | val); |
643 | mutex_unlock(lock: &data->update_lock); |
644 | return -EINVAL; |
645 | } |
646 | |
647 | /* Correct the fan minimum speed */ |
648 | data->fan_min[nr] = FAN_TO_REG(rpm: min, DIV_FROM_REG(data->fan_div[nr])); |
649 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), value: data->fan_min[nr]); |
650 | |
651 | old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); |
652 | vt8231_write_value(data, VT8231_REG_FANDIV, value: old); |
653 | mutex_unlock(lock: &data->update_lock); |
654 | return count; |
655 | } |
656 | |
657 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
658 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); |
659 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); |
660 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); |
661 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
662 | static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); |
663 | |
664 | /* Alarms */ |
665 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
666 | char *buf) |
667 | { |
668 | struct vt8231_data *data = vt8231_update_device(dev); |
669 | return sprintf(buf, fmt: "%d\n" , data->alarms); |
670 | } |
671 | static DEVICE_ATTR_RO(alarms); |
672 | |
673 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
674 | char *buf) |
675 | { |
676 | int bitnr = to_sensor_dev_attr(attr)->index; |
677 | struct vt8231_data *data = vt8231_update_device(dev); |
678 | return sprintf(buf, fmt: "%u\n" , (data->alarms >> bitnr) & 1); |
679 | } |
680 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); |
681 | static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 11); |
682 | static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 0); |
683 | static SENSOR_DEVICE_ATTR_RO(temp4_alarm, alarm, 1); |
684 | static SENSOR_DEVICE_ATTR_RO(temp5_alarm, alarm, 3); |
685 | static SENSOR_DEVICE_ATTR_RO(temp6_alarm, alarm, 8); |
686 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 11); |
687 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 0); |
688 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 1); |
689 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); |
690 | static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8); |
691 | static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 2); |
692 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); |
693 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); |
694 | |
695 | static ssize_t name_show(struct device *dev, struct device_attribute |
696 | *devattr, char *buf) |
697 | { |
698 | struct vt8231_data *data = dev_get_drvdata(dev); |
699 | return sprintf(buf, fmt: "%s\n" , data->name); |
700 | } |
701 | static DEVICE_ATTR_RO(name); |
702 | |
703 | static struct attribute *vt8231_attributes_temps[6][5] = { |
704 | { |
705 | &dev_attr_temp1_input.attr, |
706 | &dev_attr_temp1_max_hyst.attr, |
707 | &dev_attr_temp1_max.attr, |
708 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
709 | NULL |
710 | }, { |
711 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
712 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, |
713 | &sensor_dev_attr_temp2_max.dev_attr.attr, |
714 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
715 | NULL |
716 | }, { |
717 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
718 | &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, |
719 | &sensor_dev_attr_temp3_max.dev_attr.attr, |
720 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
721 | NULL |
722 | }, { |
723 | &sensor_dev_attr_temp4_input.dev_attr.attr, |
724 | &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, |
725 | &sensor_dev_attr_temp4_max.dev_attr.attr, |
726 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, |
727 | NULL |
728 | }, { |
729 | &sensor_dev_attr_temp5_input.dev_attr.attr, |
730 | &sensor_dev_attr_temp5_max_hyst.dev_attr.attr, |
731 | &sensor_dev_attr_temp5_max.dev_attr.attr, |
732 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, |
733 | NULL |
734 | }, { |
735 | &sensor_dev_attr_temp6_input.dev_attr.attr, |
736 | &sensor_dev_attr_temp6_max_hyst.dev_attr.attr, |
737 | &sensor_dev_attr_temp6_max.dev_attr.attr, |
738 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, |
739 | NULL |
740 | } |
741 | }; |
742 | |
743 | static const struct attribute_group vt8231_group_temps[6] = { |
744 | { .attrs = vt8231_attributes_temps[0] }, |
745 | { .attrs = vt8231_attributes_temps[1] }, |
746 | { .attrs = vt8231_attributes_temps[2] }, |
747 | { .attrs = vt8231_attributes_temps[3] }, |
748 | { .attrs = vt8231_attributes_temps[4] }, |
749 | { .attrs = vt8231_attributes_temps[5] }, |
750 | }; |
751 | |
752 | static struct attribute *vt8231_attributes_volts[6][5] = { |
753 | { |
754 | &sensor_dev_attr_in0_input.dev_attr.attr, |
755 | &sensor_dev_attr_in0_min.dev_attr.attr, |
756 | &sensor_dev_attr_in0_max.dev_attr.attr, |
757 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
758 | NULL |
759 | }, { |
760 | &sensor_dev_attr_in1_input.dev_attr.attr, |
761 | &sensor_dev_attr_in1_min.dev_attr.attr, |
762 | &sensor_dev_attr_in1_max.dev_attr.attr, |
763 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
764 | NULL |
765 | }, { |
766 | &sensor_dev_attr_in2_input.dev_attr.attr, |
767 | &sensor_dev_attr_in2_min.dev_attr.attr, |
768 | &sensor_dev_attr_in2_max.dev_attr.attr, |
769 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
770 | NULL |
771 | }, { |
772 | &sensor_dev_attr_in3_input.dev_attr.attr, |
773 | &sensor_dev_attr_in3_min.dev_attr.attr, |
774 | &sensor_dev_attr_in3_max.dev_attr.attr, |
775 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
776 | NULL |
777 | }, { |
778 | &sensor_dev_attr_in4_input.dev_attr.attr, |
779 | &sensor_dev_attr_in4_min.dev_attr.attr, |
780 | &sensor_dev_attr_in4_max.dev_attr.attr, |
781 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
782 | NULL |
783 | }, { |
784 | &dev_attr_in5_input.attr, |
785 | &dev_attr_in5_min.attr, |
786 | &dev_attr_in5_max.attr, |
787 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
788 | NULL |
789 | } |
790 | }; |
791 | |
792 | static const struct attribute_group vt8231_group_volts[6] = { |
793 | { .attrs = vt8231_attributes_volts[0] }, |
794 | { .attrs = vt8231_attributes_volts[1] }, |
795 | { .attrs = vt8231_attributes_volts[2] }, |
796 | { .attrs = vt8231_attributes_volts[3] }, |
797 | { .attrs = vt8231_attributes_volts[4] }, |
798 | { .attrs = vt8231_attributes_volts[5] }, |
799 | }; |
800 | |
801 | static struct attribute *vt8231_attributes[] = { |
802 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
803 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
804 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
805 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
806 | &sensor_dev_attr_fan1_div.dev_attr.attr, |
807 | &sensor_dev_attr_fan2_div.dev_attr.attr, |
808 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
809 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
810 | &dev_attr_alarms.attr, |
811 | &dev_attr_name.attr, |
812 | NULL |
813 | }; |
814 | |
815 | static const struct attribute_group vt8231_group = { |
816 | .attrs = vt8231_attributes, |
817 | }; |
818 | |
819 | static void vt8231_init_device(struct vt8231_data *data) |
820 | { |
821 | vt8231_write_value(data, VT8231_REG_TEMP1_CONFIG, value: 0); |
822 | vt8231_write_value(data, VT8231_REG_TEMP2_CONFIG, value: 0); |
823 | } |
824 | |
825 | static int vt8231_probe(struct platform_device *pdev) |
826 | { |
827 | struct resource *res; |
828 | struct vt8231_data *data; |
829 | int err = 0, i; |
830 | |
831 | /* Reserve the ISA region */ |
832 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
833 | if (!devm_request_region(&pdev->dev, res->start, VT8231_EXTENT, |
834 | DRIVER_NAME)) { |
835 | dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n" , |
836 | (unsigned long)res->start, (unsigned long)res->end); |
837 | return -ENODEV; |
838 | } |
839 | |
840 | data = devm_kzalloc(dev: &pdev->dev, size: sizeof(struct vt8231_data), GFP_KERNEL); |
841 | if (!data) |
842 | return -ENOMEM; |
843 | |
844 | platform_set_drvdata(pdev, data); |
845 | data->addr = res->start; |
846 | data->name = DRIVER_NAME; |
847 | |
848 | mutex_init(&data->update_lock); |
849 | vt8231_init_device(data); |
850 | |
851 | /* Register sysfs hooks */ |
852 | err = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &vt8231_group); |
853 | if (err) |
854 | return err; |
855 | |
856 | /* Must update device information to find out the config field */ |
857 | data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG); |
858 | |
859 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) { |
860 | if (ISTEMP(i, data->uch_config)) { |
861 | err = sysfs_create_group(kobj: &pdev->dev.kobj, |
862 | grp: &vt8231_group_temps[i]); |
863 | if (err) |
864 | goto exit_remove_files; |
865 | } |
866 | } |
867 | |
868 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) { |
869 | if (ISVOLT(i, data->uch_config)) { |
870 | err = sysfs_create_group(kobj: &pdev->dev.kobj, |
871 | grp: &vt8231_group_volts[i]); |
872 | if (err) |
873 | goto exit_remove_files; |
874 | } |
875 | } |
876 | |
877 | data->hwmon_dev = hwmon_device_register(dev: &pdev->dev); |
878 | if (IS_ERR(ptr: data->hwmon_dev)) { |
879 | err = PTR_ERR(ptr: data->hwmon_dev); |
880 | goto exit_remove_files; |
881 | } |
882 | return 0; |
883 | |
884 | exit_remove_files: |
885 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
886 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &vt8231_group_volts[i]); |
887 | |
888 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) |
889 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &vt8231_group_temps[i]); |
890 | |
891 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &vt8231_group); |
892 | return err; |
893 | } |
894 | |
895 | static void vt8231_remove(struct platform_device *pdev) |
896 | { |
897 | struct vt8231_data *data = platform_get_drvdata(pdev); |
898 | int i; |
899 | |
900 | hwmon_device_unregister(dev: data->hwmon_dev); |
901 | |
902 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
903 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &vt8231_group_volts[i]); |
904 | |
905 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) |
906 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &vt8231_group_temps[i]); |
907 | |
908 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &vt8231_group); |
909 | } |
910 | |
911 | |
912 | static struct platform_driver vt8231_driver = { |
913 | .driver = { |
914 | .name = DRIVER_NAME, |
915 | }, |
916 | .probe = vt8231_probe, |
917 | .remove_new = vt8231_remove, |
918 | }; |
919 | |
920 | static const struct pci_device_id vt8231_pci_ids[] = { |
921 | { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) }, |
922 | { 0, } |
923 | }; |
924 | |
925 | MODULE_DEVICE_TABLE(pci, vt8231_pci_ids); |
926 | |
927 | static int vt8231_device_add(unsigned short address) |
928 | { |
929 | struct resource res = { |
930 | .start = address, |
931 | .end = address + VT8231_EXTENT - 1, |
932 | .name = DRIVER_NAME, |
933 | .flags = IORESOURCE_IO, |
934 | }; |
935 | int err; |
936 | |
937 | err = acpi_check_resource_conflict(res: &res); |
938 | if (err) |
939 | goto exit; |
940 | |
941 | pdev = platform_device_alloc(DRIVER_NAME, id: address); |
942 | if (!pdev) { |
943 | err = -ENOMEM; |
944 | pr_err("Device allocation failed\n" ); |
945 | goto exit; |
946 | } |
947 | |
948 | err = platform_device_add_resources(pdev, res: &res, num: 1); |
949 | if (err) { |
950 | pr_err("Device resource addition failed (%d)\n" , err); |
951 | goto exit_device_put; |
952 | } |
953 | |
954 | err = platform_device_add(pdev); |
955 | if (err) { |
956 | pr_err("Device addition failed (%d)\n" , err); |
957 | goto exit_device_put; |
958 | } |
959 | |
960 | return 0; |
961 | |
962 | exit_device_put: |
963 | platform_device_put(pdev); |
964 | exit: |
965 | return err; |
966 | } |
967 | |
968 | static int vt8231_pci_probe(struct pci_dev *dev, |
969 | const struct pci_device_id *id) |
970 | { |
971 | u16 address, val; |
972 | int ret; |
973 | |
974 | if (force_addr) { |
975 | address = force_addr & 0xff00; |
976 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n" , |
977 | address); |
978 | |
979 | ret = pci_write_config_word(dev, VT8231_BASE_REG, val: address | 1); |
980 | if (ret != PCIBIOS_SUCCESSFUL) |
981 | return -ENODEV; |
982 | } |
983 | |
984 | pci_read_config_word(dev, VT8231_BASE_REG, val: &val); |
985 | if (val == (u16)~0) |
986 | return -ENODEV; |
987 | |
988 | address = val & ~(VT8231_EXTENT - 1); |
989 | if (address == 0) { |
990 | dev_err(&dev->dev, "base address not set - upgrade BIOS or use force_addr=0xaddr\n" ); |
991 | return -ENODEV; |
992 | } |
993 | |
994 | pci_read_config_word(dev, VT8231_ENABLE_REG, val: &val); |
995 | if (val == (u16)~0) |
996 | return -ENODEV; |
997 | |
998 | if (!(val & 0x0001)) { |
999 | dev_warn(&dev->dev, "enabling sensors\n" ); |
1000 | ret = pci_write_config_word(dev, VT8231_ENABLE_REG, val: val | 0x1); |
1001 | if (ret != PCIBIOS_SUCCESSFUL) |
1002 | return -ENODEV; |
1003 | } |
1004 | |
1005 | if (platform_driver_register(&vt8231_driver)) |
1006 | goto exit; |
1007 | |
1008 | /* Sets global pdev as a side effect */ |
1009 | if (vt8231_device_add(address)) |
1010 | goto exit_unregister; |
1011 | |
1012 | /* |
1013 | * Always return failure here. This is to allow other drivers to bind |
1014 | * to this pci device. We don't really want to have control over the |
1015 | * pci device, we only wanted to read as few register values from it. |
1016 | */ |
1017 | |
1018 | /* |
1019 | * We do, however, mark ourselves as using the PCI device to stop it |
1020 | * getting unloaded. |
1021 | */ |
1022 | s_bridge = pci_dev_get(dev); |
1023 | return -ENODEV; |
1024 | |
1025 | exit_unregister: |
1026 | platform_driver_unregister(&vt8231_driver); |
1027 | exit: |
1028 | return -ENODEV; |
1029 | } |
1030 | |
1031 | static struct pci_driver vt8231_pci_driver = { |
1032 | .name = DRIVER_NAME, |
1033 | .id_table = vt8231_pci_ids, |
1034 | .probe = vt8231_pci_probe, |
1035 | }; |
1036 | |
1037 | static int __init sm_vt8231_init(void) |
1038 | { |
1039 | return pci_register_driver(&vt8231_pci_driver); |
1040 | } |
1041 | |
1042 | static void __exit sm_vt8231_exit(void) |
1043 | { |
1044 | pci_unregister_driver(dev: &vt8231_pci_driver); |
1045 | if (s_bridge != NULL) { |
1046 | platform_device_unregister(pdev); |
1047 | platform_driver_unregister(&vt8231_driver); |
1048 | pci_dev_put(dev: s_bridge); |
1049 | s_bridge = NULL; |
1050 | } |
1051 | } |
1052 | |
1053 | MODULE_AUTHOR("Roger Lucas <vt8231@hiddenengine.co.uk>" ); |
1054 | MODULE_DESCRIPTION("VT8231 sensors" ); |
1055 | MODULE_LICENSE("GPL" ); |
1056 | |
1057 | module_init(sm_vt8231_init); |
1058 | module_exit(sm_vt8231_exit); |
1059 | |