1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * sis5595.c - Part of lm_sensors, Linux kernel modules |
4 | * for hardware monitoring |
5 | * |
6 | * Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, |
7 | * Kyösti Mälkki <kmalkki@cc.hut.fi>, and |
8 | * Mark D. Studebaker <mdsxyz123@yahoo.com> |
9 | * Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with |
10 | * the help of Jean Delvare <jdelvare@suse.de> |
11 | */ |
12 | |
13 | /* |
14 | * SiS southbridge has a LM78-like chip integrated on the same IC. |
15 | * This driver is a customized copy of lm78.c |
16 | * |
17 | * Supports following revisions: |
18 | * Version PCI ID PCI Revision |
19 | * 1 1039/0008 AF or less |
20 | * 2 1039/0008 B0 or greater |
21 | * |
22 | * Note: these chips contain a 0008 device which is incompatible with the |
23 | * 5595. We recognize these by the presence of the listed |
24 | * "blacklist" PCI ID and refuse to load. |
25 | * |
26 | * NOT SUPPORTED PCI ID BLACKLIST PCI ID |
27 | * 540 0008 0540 |
28 | * 550 0008 0550 |
29 | * 5513 0008 5511 |
30 | * 5581 0008 5597 |
31 | * 5582 0008 5597 |
32 | * 5597 0008 5597 |
33 | * 5598 0008 5597/5598 |
34 | * 630 0008 0630 |
35 | * 645 0008 0645 |
36 | * 730 0008 0730 |
37 | * 735 0008 0735 |
38 | */ |
39 | |
40 | #define DRIVER_NAME "sis5595" |
41 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
42 | |
43 | #include <linux/module.h> |
44 | #include <linux/slab.h> |
45 | #include <linux/ioport.h> |
46 | #include <linux/pci.h> |
47 | #include <linux/platform_device.h> |
48 | #include <linux/hwmon.h> |
49 | #include <linux/hwmon-sysfs.h> |
50 | #include <linux/err.h> |
51 | #include <linux/init.h> |
52 | #include <linux/jiffies.h> |
53 | #include <linux/mutex.h> |
54 | #include <linux/sysfs.h> |
55 | #include <linux/acpi.h> |
56 | #include <linux/io.h> |
57 | |
58 | /* |
59 | * If force_addr is set to anything different from 0, we forcibly enable |
60 | * the device at the given address. |
61 | */ |
62 | static u16 force_addr; |
63 | module_param(force_addr, ushort, 0); |
64 | MODULE_PARM_DESC(force_addr, |
65 | "Initialize the base address of the sensors" ); |
66 | |
67 | static struct platform_device *pdev; |
68 | |
69 | /* Many SIS5595 constants specified below */ |
70 | |
71 | /* Length of ISA address segment */ |
72 | #define SIS5595_EXTENT 8 |
73 | /* PCI Config Registers */ |
74 | #define SIS5595_BASE_REG 0x68 |
75 | #define SIS5595_PIN_REG 0x7A |
76 | #define SIS5595_ENABLE_REG 0x7B |
77 | |
78 | /* Where are the ISA address/data registers relative to the base address */ |
79 | #define SIS5595_ADDR_REG_OFFSET 5 |
80 | #define SIS5595_DATA_REG_OFFSET 6 |
81 | |
82 | /* The SIS5595 registers */ |
83 | #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) |
84 | #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) |
85 | #define SIS5595_REG_IN(nr) (0x20 + (nr)) |
86 | |
87 | #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) |
88 | #define SIS5595_REG_FAN(nr) (0x28 + (nr)) |
89 | |
90 | /* |
91 | * On the first version of the chip, the temp registers are separate. |
92 | * On the second version, |
93 | * TEMP pin is shared with IN4, configured in PCI register 0x7A. |
94 | * The registers are the same as well. |
95 | * OVER and HYST are really MAX and MIN. |
96 | */ |
97 | |
98 | #define REV2MIN 0xb0 |
99 | #define SIS5595_REG_TEMP (((data->revision) >= REV2MIN) ? \ |
100 | SIS5595_REG_IN(4) : 0x27) |
101 | #define SIS5595_REG_TEMP_OVER (((data->revision) >= REV2MIN) ? \ |
102 | SIS5595_REG_IN_MAX(4) : 0x39) |
103 | #define SIS5595_REG_TEMP_HYST (((data->revision) >= REV2MIN) ? \ |
104 | SIS5595_REG_IN_MIN(4) : 0x3a) |
105 | |
106 | #define SIS5595_REG_CONFIG 0x40 |
107 | #define SIS5595_REG_ALARM1 0x41 |
108 | #define SIS5595_REG_ALARM2 0x42 |
109 | #define SIS5595_REG_FANDIV 0x47 |
110 | |
111 | /* |
112 | * Conversions. Limit checking is only done on the TO_REG |
113 | * variants. |
114 | */ |
115 | |
116 | /* |
117 | * IN: mV, (0V to 4.08V) |
118 | * REG: 16mV/bit |
119 | */ |
120 | static inline u8 IN_TO_REG(unsigned long val) |
121 | { |
122 | unsigned long nval = clamp_val(val, 0, 4080); |
123 | return (nval + 8) / 16; |
124 | } |
125 | #define IN_FROM_REG(val) ((val) * 16) |
126 | |
127 | static inline u8 FAN_TO_REG(long rpm, int div) |
128 | { |
129 | if (rpm <= 0) |
130 | return 255; |
131 | if (rpm > 1350000) |
132 | return 1; |
133 | return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
134 | } |
135 | |
136 | static inline int FAN_FROM_REG(u8 val, int div) |
137 | { |
138 | return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div); |
139 | } |
140 | |
141 | /* |
142 | * TEMP: mC (-54.12C to +157.53C) |
143 | * REG: 0.83C/bit + 52.12, two's complement |
144 | */ |
145 | static inline int TEMP_FROM_REG(s8 val) |
146 | { |
147 | return val * 830 + 52120; |
148 | } |
149 | static inline s8 TEMP_TO_REG(long val) |
150 | { |
151 | int nval = clamp_val(val, -54120, 157530) ; |
152 | return nval < 0 ? (nval - 5212 - 415) / 830 : (nval - 5212 + 415) / 830; |
153 | } |
154 | |
155 | /* |
156 | * FAN DIV: 1, 2, 4, or 8 |
157 | * REG: 0, 1, 2, or 3 (respectively) |
158 | */ |
159 | #define DIV_FROM_REG(val) (1 << (val)) |
160 | |
161 | /* |
162 | * For each registered chip, we need to keep some data in memory. |
163 | * The structure is dynamically allocated. |
164 | */ |
165 | struct sis5595_data { |
166 | unsigned short addr; |
167 | const char *name; |
168 | struct device *hwmon_dev; |
169 | struct mutex lock; |
170 | |
171 | struct mutex update_lock; |
172 | bool valid; /* true if following fields are valid */ |
173 | unsigned long last_updated; /* In jiffies */ |
174 | char maxins; /* == 3 if temp enabled, otherwise == 4 */ |
175 | u8 revision; /* Reg. value */ |
176 | |
177 | u8 in[5]; /* Register value */ |
178 | u8 in_max[5]; /* Register value */ |
179 | u8 in_min[5]; /* Register value */ |
180 | u8 fan[2]; /* Register value */ |
181 | u8 fan_min[2]; /* Register value */ |
182 | s8 temp; /* Register value */ |
183 | s8 temp_over; /* Register value */ |
184 | s8 temp_hyst; /* Register value */ |
185 | u8 fan_div[2]; /* Register encoding, shifted right */ |
186 | u16 alarms; /* Register encoding, combined */ |
187 | }; |
188 | |
189 | static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ |
190 | |
191 | /* ISA access must be locked explicitly. */ |
192 | static int sis5595_read_value(struct sis5595_data *data, u8 reg) |
193 | { |
194 | int res; |
195 | |
196 | mutex_lock(&data->lock); |
197 | outb_p(value: reg, port: data->addr + SIS5595_ADDR_REG_OFFSET); |
198 | res = inb_p(port: data->addr + SIS5595_DATA_REG_OFFSET); |
199 | mutex_unlock(lock: &data->lock); |
200 | return res; |
201 | } |
202 | |
203 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value) |
204 | { |
205 | mutex_lock(&data->lock); |
206 | outb_p(value: reg, port: data->addr + SIS5595_ADDR_REG_OFFSET); |
207 | outb_p(value, port: data->addr + SIS5595_DATA_REG_OFFSET); |
208 | mutex_unlock(lock: &data->lock); |
209 | } |
210 | |
211 | static struct sis5595_data *sis5595_update_device(struct device *dev) |
212 | { |
213 | struct sis5595_data *data = dev_get_drvdata(dev); |
214 | int i; |
215 | |
216 | mutex_lock(&data->update_lock); |
217 | |
218 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
219 | || !data->valid) { |
220 | |
221 | for (i = 0; i <= data->maxins; i++) { |
222 | data->in[i] = |
223 | sis5595_read_value(data, SIS5595_REG_IN(i)); |
224 | data->in_min[i] = |
225 | sis5595_read_value(data, |
226 | SIS5595_REG_IN_MIN(i)); |
227 | data->in_max[i] = |
228 | sis5595_read_value(data, |
229 | SIS5595_REG_IN_MAX(i)); |
230 | } |
231 | for (i = 0; i < 2; i++) { |
232 | data->fan[i] = |
233 | sis5595_read_value(data, SIS5595_REG_FAN(i)); |
234 | data->fan_min[i] = |
235 | sis5595_read_value(data, |
236 | SIS5595_REG_FAN_MIN(i)); |
237 | } |
238 | if (data->maxins == 3) { |
239 | data->temp = |
240 | sis5595_read_value(data, SIS5595_REG_TEMP); |
241 | data->temp_over = |
242 | sis5595_read_value(data, SIS5595_REG_TEMP_OVER); |
243 | data->temp_hyst = |
244 | sis5595_read_value(data, SIS5595_REG_TEMP_HYST); |
245 | } |
246 | i = sis5595_read_value(data, SIS5595_REG_FANDIV); |
247 | data->fan_div[0] = (i >> 4) & 0x03; |
248 | data->fan_div[1] = i >> 6; |
249 | data->alarms = |
250 | sis5595_read_value(data, SIS5595_REG_ALARM1) | |
251 | (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8); |
252 | data->last_updated = jiffies; |
253 | data->valid = true; |
254 | } |
255 | |
256 | mutex_unlock(lock: &data->update_lock); |
257 | |
258 | return data; |
259 | } |
260 | |
261 | /* 4 Voltages */ |
262 | static ssize_t in_show(struct device *dev, struct device_attribute *da, |
263 | char *buf) |
264 | { |
265 | struct sis5595_data *data = sis5595_update_device(dev); |
266 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
267 | int nr = attr->index; |
268 | return sprintf(buf, fmt: "%d\n" , IN_FROM_REG(data->in[nr])); |
269 | } |
270 | |
271 | static ssize_t in_min_show(struct device *dev, struct device_attribute *da, |
272 | char *buf) |
273 | { |
274 | struct sis5595_data *data = sis5595_update_device(dev); |
275 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
276 | int nr = attr->index; |
277 | return sprintf(buf, fmt: "%d\n" , IN_FROM_REG(data->in_min[nr])); |
278 | } |
279 | |
280 | static ssize_t in_max_show(struct device *dev, struct device_attribute *da, |
281 | char *buf) |
282 | { |
283 | struct sis5595_data *data = sis5595_update_device(dev); |
284 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
285 | int nr = attr->index; |
286 | return sprintf(buf, fmt: "%d\n" , IN_FROM_REG(data->in_max[nr])); |
287 | } |
288 | |
289 | static ssize_t in_min_store(struct device *dev, struct device_attribute *da, |
290 | const char *buf, size_t count) |
291 | { |
292 | struct sis5595_data *data = dev_get_drvdata(dev); |
293 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
294 | int nr = attr->index; |
295 | unsigned long val; |
296 | int err; |
297 | |
298 | err = kstrtoul(s: buf, base: 10, res: &val); |
299 | if (err) |
300 | return err; |
301 | |
302 | mutex_lock(&data->update_lock); |
303 | data->in_min[nr] = IN_TO_REG(val); |
304 | sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), value: data->in_min[nr]); |
305 | mutex_unlock(lock: &data->update_lock); |
306 | return count; |
307 | } |
308 | |
309 | static ssize_t in_max_store(struct device *dev, struct device_attribute *da, |
310 | const char *buf, size_t count) |
311 | { |
312 | struct sis5595_data *data = dev_get_drvdata(dev); |
313 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
314 | int nr = attr->index; |
315 | unsigned long val; |
316 | int err; |
317 | |
318 | err = kstrtoul(s: buf, base: 10, res: &val); |
319 | if (err) |
320 | return err; |
321 | |
322 | mutex_lock(&data->update_lock); |
323 | data->in_max[nr] = IN_TO_REG(val); |
324 | sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), value: data->in_max[nr]); |
325 | mutex_unlock(lock: &data->update_lock); |
326 | return count; |
327 | } |
328 | |
329 | static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0); |
330 | static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); |
331 | static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); |
332 | static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1); |
333 | static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); |
334 | static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); |
335 | static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2); |
336 | static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); |
337 | static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); |
338 | static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3); |
339 | static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); |
340 | static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); |
341 | static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4); |
342 | static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); |
343 | static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); |
344 | |
345 | /* Temperature */ |
346 | static ssize_t temp1_input_show(struct device *dev, |
347 | struct device_attribute *attr, char *buf) |
348 | { |
349 | struct sis5595_data *data = sis5595_update_device(dev); |
350 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(val: data->temp)); |
351 | } |
352 | |
353 | static ssize_t temp1_max_show(struct device *dev, struct device_attribute *attr, |
354 | char *buf) |
355 | { |
356 | struct sis5595_data *data = sis5595_update_device(dev); |
357 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(val: data->temp_over)); |
358 | } |
359 | |
360 | static ssize_t temp1_max_store(struct device *dev, |
361 | struct device_attribute *attr, const char *buf, |
362 | size_t count) |
363 | { |
364 | struct sis5595_data *data = dev_get_drvdata(dev); |
365 | long val; |
366 | int err; |
367 | |
368 | err = kstrtol(s: buf, base: 10, res: &val); |
369 | if (err) |
370 | return err; |
371 | |
372 | mutex_lock(&data->update_lock); |
373 | data->temp_over = TEMP_TO_REG(val); |
374 | sis5595_write_value(data, SIS5595_REG_TEMP_OVER, value: data->temp_over); |
375 | mutex_unlock(lock: &data->update_lock); |
376 | return count; |
377 | } |
378 | |
379 | static ssize_t temp1_max_hyst_show(struct device *dev, |
380 | struct device_attribute *attr, char *buf) |
381 | { |
382 | struct sis5595_data *data = sis5595_update_device(dev); |
383 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(val: data->temp_hyst)); |
384 | } |
385 | |
386 | static ssize_t temp1_max_hyst_store(struct device *dev, |
387 | struct device_attribute *attr, |
388 | const char *buf, size_t count) |
389 | { |
390 | struct sis5595_data *data = dev_get_drvdata(dev); |
391 | long val; |
392 | int err; |
393 | |
394 | err = kstrtol(s: buf, base: 10, res: &val); |
395 | if (err) |
396 | return err; |
397 | |
398 | mutex_lock(&data->update_lock); |
399 | data->temp_hyst = TEMP_TO_REG(val); |
400 | sis5595_write_value(data, SIS5595_REG_TEMP_HYST, value: data->temp_hyst); |
401 | mutex_unlock(lock: &data->update_lock); |
402 | return count; |
403 | } |
404 | |
405 | static DEVICE_ATTR_RO(temp1_input); |
406 | static DEVICE_ATTR_RW(temp1_max); |
407 | static DEVICE_ATTR_RW(temp1_max_hyst); |
408 | |
409 | /* 2 Fans */ |
410 | static ssize_t fan_show(struct device *dev, struct device_attribute *da, |
411 | char *buf) |
412 | { |
413 | struct sis5595_data *data = sis5595_update_device(dev); |
414 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
415 | int nr = attr->index; |
416 | return sprintf(buf, fmt: "%d\n" , FAN_FROM_REG(val: data->fan[nr], |
417 | DIV_FROM_REG(data->fan_div[nr]))); |
418 | } |
419 | |
420 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *da, |
421 | char *buf) |
422 | { |
423 | struct sis5595_data *data = sis5595_update_device(dev); |
424 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
425 | int nr = attr->index; |
426 | return sprintf(buf, fmt: "%d\n" , FAN_FROM_REG(val: data->fan_min[nr], |
427 | DIV_FROM_REG(data->fan_div[nr]))); |
428 | } |
429 | |
430 | static ssize_t fan_min_store(struct device *dev, struct device_attribute *da, |
431 | const char *buf, size_t count) |
432 | { |
433 | struct sis5595_data *data = dev_get_drvdata(dev); |
434 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
435 | int nr = attr->index; |
436 | unsigned long val; |
437 | int err; |
438 | |
439 | err = kstrtoul(s: buf, base: 10, res: &val); |
440 | if (err) |
441 | return err; |
442 | |
443 | mutex_lock(&data->update_lock); |
444 | data->fan_min[nr] = FAN_TO_REG(rpm: val, DIV_FROM_REG(data->fan_div[nr])); |
445 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), value: data->fan_min[nr]); |
446 | mutex_unlock(lock: &data->update_lock); |
447 | return count; |
448 | } |
449 | |
450 | static ssize_t fan_div_show(struct device *dev, struct device_attribute *da, |
451 | char *buf) |
452 | { |
453 | struct sis5595_data *data = sis5595_update_device(dev); |
454 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
455 | int nr = attr->index; |
456 | return sprintf(buf, fmt: "%d\n" , DIV_FROM_REG(data->fan_div[nr])); |
457 | } |
458 | |
459 | /* |
460 | * Note: we save and restore the fan minimum here, because its value is |
461 | * determined in part by the fan divisor. This follows the principle of |
462 | * least surprise; the user doesn't expect the fan minimum to change just |
463 | * because the divisor changed. |
464 | */ |
465 | static ssize_t fan_div_store(struct device *dev, struct device_attribute *da, |
466 | const char *buf, size_t count) |
467 | { |
468 | struct sis5595_data *data = dev_get_drvdata(dev); |
469 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
470 | int nr = attr->index; |
471 | unsigned long min; |
472 | int reg; |
473 | unsigned long val; |
474 | int err; |
475 | |
476 | err = kstrtoul(s: buf, base: 10, res: &val); |
477 | if (err) |
478 | return err; |
479 | |
480 | mutex_lock(&data->update_lock); |
481 | min = FAN_FROM_REG(val: data->fan_min[nr], |
482 | DIV_FROM_REG(data->fan_div[nr])); |
483 | reg = sis5595_read_value(data, SIS5595_REG_FANDIV); |
484 | |
485 | switch (val) { |
486 | case 1: |
487 | data->fan_div[nr] = 0; |
488 | break; |
489 | case 2: |
490 | data->fan_div[nr] = 1; |
491 | break; |
492 | case 4: |
493 | data->fan_div[nr] = 2; |
494 | break; |
495 | case 8: |
496 | data->fan_div[nr] = 3; |
497 | break; |
498 | default: |
499 | dev_err(dev, |
500 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n" , |
501 | val); |
502 | mutex_unlock(lock: &data->update_lock); |
503 | return -EINVAL; |
504 | } |
505 | |
506 | switch (nr) { |
507 | case 0: |
508 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); |
509 | break; |
510 | case 1: |
511 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); |
512 | break; |
513 | } |
514 | sis5595_write_value(data, SIS5595_REG_FANDIV, value: reg); |
515 | data->fan_min[nr] = |
516 | FAN_TO_REG(rpm: min, DIV_FROM_REG(data->fan_div[nr])); |
517 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), value: data->fan_min[nr]); |
518 | mutex_unlock(lock: &data->update_lock); |
519 | return count; |
520 | } |
521 | |
522 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
523 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); |
524 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); |
525 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); |
526 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
527 | static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); |
528 | |
529 | /* Alarms */ |
530 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
531 | char *buf) |
532 | { |
533 | struct sis5595_data *data = sis5595_update_device(dev); |
534 | return sprintf(buf, fmt: "%d\n" , data->alarms); |
535 | } |
536 | static DEVICE_ATTR_RO(alarms); |
537 | |
538 | static ssize_t alarm_show(struct device *dev, struct device_attribute *da, |
539 | char *buf) |
540 | { |
541 | struct sis5595_data *data = sis5595_update_device(dev); |
542 | int nr = to_sensor_dev_attr(da)->index; |
543 | return sprintf(buf, fmt: "%u\n" , (data->alarms >> nr) & 1); |
544 | } |
545 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
546 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); |
547 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); |
548 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); |
549 | static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 15); |
550 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); |
551 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); |
552 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 15); |
553 | |
554 | static ssize_t name_show(struct device *dev, struct device_attribute *attr, |
555 | char *buf) |
556 | { |
557 | struct sis5595_data *data = dev_get_drvdata(dev); |
558 | return sprintf(buf, fmt: "%s\n" , data->name); |
559 | } |
560 | static DEVICE_ATTR_RO(name); |
561 | |
562 | static struct attribute *sis5595_attributes[] = { |
563 | &sensor_dev_attr_in0_input.dev_attr.attr, |
564 | &sensor_dev_attr_in0_min.dev_attr.attr, |
565 | &sensor_dev_attr_in0_max.dev_attr.attr, |
566 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
567 | &sensor_dev_attr_in1_input.dev_attr.attr, |
568 | &sensor_dev_attr_in1_min.dev_attr.attr, |
569 | &sensor_dev_attr_in1_max.dev_attr.attr, |
570 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
571 | &sensor_dev_attr_in2_input.dev_attr.attr, |
572 | &sensor_dev_attr_in2_min.dev_attr.attr, |
573 | &sensor_dev_attr_in2_max.dev_attr.attr, |
574 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
575 | &sensor_dev_attr_in3_input.dev_attr.attr, |
576 | &sensor_dev_attr_in3_min.dev_attr.attr, |
577 | &sensor_dev_attr_in3_max.dev_attr.attr, |
578 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
579 | |
580 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
581 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
582 | &sensor_dev_attr_fan1_div.dev_attr.attr, |
583 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
584 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
585 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
586 | &sensor_dev_attr_fan2_div.dev_attr.attr, |
587 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
588 | |
589 | &dev_attr_alarms.attr, |
590 | &dev_attr_name.attr, |
591 | NULL |
592 | }; |
593 | |
594 | static const struct attribute_group sis5595_group = { |
595 | .attrs = sis5595_attributes, |
596 | }; |
597 | |
598 | static struct attribute *sis5595_attributes_in4[] = { |
599 | &sensor_dev_attr_in4_input.dev_attr.attr, |
600 | &sensor_dev_attr_in4_min.dev_attr.attr, |
601 | &sensor_dev_attr_in4_max.dev_attr.attr, |
602 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
603 | NULL |
604 | }; |
605 | |
606 | static const struct attribute_group sis5595_group_in4 = { |
607 | .attrs = sis5595_attributes_in4, |
608 | }; |
609 | |
610 | static struct attribute *sis5595_attributes_temp1[] = { |
611 | &dev_attr_temp1_input.attr, |
612 | &dev_attr_temp1_max.attr, |
613 | &dev_attr_temp1_max_hyst.attr, |
614 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
615 | NULL |
616 | }; |
617 | |
618 | static const struct attribute_group sis5595_group_temp1 = { |
619 | .attrs = sis5595_attributes_temp1, |
620 | }; |
621 | |
622 | /* Called when we have found a new SIS5595. */ |
623 | static void sis5595_init_device(struct sis5595_data *data) |
624 | { |
625 | u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG); |
626 | if (!(config & 0x01)) |
627 | sis5595_write_value(data, SIS5595_REG_CONFIG, |
628 | value: (config & 0xf7) | 0x01); |
629 | } |
630 | |
631 | /* This is called when the module is loaded */ |
632 | static int sis5595_probe(struct platform_device *pdev) |
633 | { |
634 | int err = 0; |
635 | int i; |
636 | struct sis5595_data *data; |
637 | struct resource *res; |
638 | char val; |
639 | |
640 | /* Reserve the ISA region */ |
641 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
642 | if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT, |
643 | DRIVER_NAME)) |
644 | return -EBUSY; |
645 | |
646 | data = devm_kzalloc(dev: &pdev->dev, size: sizeof(struct sis5595_data), |
647 | GFP_KERNEL); |
648 | if (!data) |
649 | return -ENOMEM; |
650 | |
651 | mutex_init(&data->lock); |
652 | mutex_init(&data->update_lock); |
653 | data->addr = res->start; |
654 | data->name = DRIVER_NAME; |
655 | platform_set_drvdata(pdev, data); |
656 | |
657 | /* |
658 | * Check revision and pin registers to determine whether 4 or 5 voltages |
659 | */ |
660 | data->revision = s_bridge->revision; |
661 | /* 4 voltages, 1 temp */ |
662 | data->maxins = 3; |
663 | if (data->revision >= REV2MIN) { |
664 | pci_read_config_byte(dev: s_bridge, SIS5595_PIN_REG, val: &val); |
665 | if (!(val & 0x80)) |
666 | /* 5 voltages, no temps */ |
667 | data->maxins = 4; |
668 | } |
669 | |
670 | /* Initialize the SIS5595 chip */ |
671 | sis5595_init_device(data); |
672 | |
673 | /* A few vars need to be filled upon startup */ |
674 | for (i = 0; i < 2; i++) { |
675 | data->fan_min[i] = sis5595_read_value(data, |
676 | SIS5595_REG_FAN_MIN(i)); |
677 | } |
678 | |
679 | /* Register sysfs hooks */ |
680 | err = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &sis5595_group); |
681 | if (err) |
682 | return err; |
683 | if (data->maxins == 4) { |
684 | err = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_in4); |
685 | if (err) |
686 | goto exit_remove_files; |
687 | } else { |
688 | err = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_temp1); |
689 | if (err) |
690 | goto exit_remove_files; |
691 | } |
692 | |
693 | data->hwmon_dev = hwmon_device_register(dev: &pdev->dev); |
694 | if (IS_ERR(ptr: data->hwmon_dev)) { |
695 | err = PTR_ERR(ptr: data->hwmon_dev); |
696 | goto exit_remove_files; |
697 | } |
698 | |
699 | return 0; |
700 | |
701 | exit_remove_files: |
702 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group); |
703 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_in4); |
704 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_temp1); |
705 | return err; |
706 | } |
707 | |
708 | static void sis5595_remove(struct platform_device *pdev) |
709 | { |
710 | struct sis5595_data *data = platform_get_drvdata(pdev); |
711 | |
712 | hwmon_device_unregister(dev: data->hwmon_dev); |
713 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group); |
714 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_in4); |
715 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_temp1); |
716 | } |
717 | |
718 | static const struct pci_device_id sis5595_pci_ids[] = { |
719 | { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, |
720 | { 0, } |
721 | }; |
722 | |
723 | MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); |
724 | |
725 | static int blacklist[] = { |
726 | PCI_DEVICE_ID_SI_540, |
727 | PCI_DEVICE_ID_SI_550, |
728 | PCI_DEVICE_ID_SI_630, |
729 | PCI_DEVICE_ID_SI_645, |
730 | PCI_DEVICE_ID_SI_730, |
731 | PCI_DEVICE_ID_SI_735, |
732 | PCI_DEVICE_ID_SI_5511, /* |
733 | * 5513 chip has the 0008 device but |
734 | * that ID shows up in other chips so we |
735 | * use the 5511 ID for recognition |
736 | */ |
737 | PCI_DEVICE_ID_SI_5597, |
738 | PCI_DEVICE_ID_SI_5598, |
739 | 0 }; |
740 | |
741 | static int sis5595_device_add(unsigned short address) |
742 | { |
743 | struct resource res = { |
744 | .start = address, |
745 | .end = address + SIS5595_EXTENT - 1, |
746 | .name = DRIVER_NAME, |
747 | .flags = IORESOURCE_IO, |
748 | }; |
749 | int err; |
750 | |
751 | err = acpi_check_resource_conflict(res: &res); |
752 | if (err) |
753 | goto exit; |
754 | |
755 | pdev = platform_device_alloc(DRIVER_NAME, id: address); |
756 | if (!pdev) { |
757 | err = -ENOMEM; |
758 | pr_err("Device allocation failed\n" ); |
759 | goto exit; |
760 | } |
761 | |
762 | err = platform_device_add_resources(pdev, res: &res, num: 1); |
763 | if (err) { |
764 | pr_err("Device resource addition failed (%d)\n" , err); |
765 | goto exit_device_put; |
766 | } |
767 | |
768 | err = platform_device_add(pdev); |
769 | if (err) { |
770 | pr_err("Device addition failed (%d)\n" , err); |
771 | goto exit_device_put; |
772 | } |
773 | |
774 | return 0; |
775 | |
776 | exit_device_put: |
777 | platform_device_put(pdev); |
778 | exit: |
779 | return err; |
780 | } |
781 | |
782 | static struct platform_driver sis5595_driver = { |
783 | .driver = { |
784 | .name = DRIVER_NAME, |
785 | }, |
786 | .probe = sis5595_probe, |
787 | .remove_new = sis5595_remove, |
788 | }; |
789 | |
790 | static int sis5595_pci_probe(struct pci_dev *dev, |
791 | const struct pci_device_id *id) |
792 | { |
793 | u16 address; |
794 | u8 enable; |
795 | int *i, err; |
796 | |
797 | for (i = blacklist; *i != 0; i++) { |
798 | struct pci_dev *d; |
799 | d = pci_get_device(PCI_VENDOR_ID_SI, device: *i, NULL); |
800 | if (d) { |
801 | dev_err(&d->dev, |
802 | "Looked for SIS5595 but found unsupported device %.4x\n" , |
803 | *i); |
804 | pci_dev_put(dev: d); |
805 | return -ENODEV; |
806 | } |
807 | } |
808 | |
809 | force_addr &= ~(SIS5595_EXTENT - 1); |
810 | if (force_addr) { |
811 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n" , force_addr); |
812 | pci_write_config_word(dev, SIS5595_BASE_REG, val: force_addr); |
813 | } |
814 | |
815 | err = pci_read_config_word(dev, SIS5595_BASE_REG, val: &address); |
816 | if (err != PCIBIOS_SUCCESSFUL) { |
817 | dev_err(&dev->dev, "Failed to read ISA address\n" ); |
818 | return -ENODEV; |
819 | } |
820 | |
821 | address &= ~(SIS5595_EXTENT - 1); |
822 | if (!address) { |
823 | dev_err(&dev->dev, |
824 | "Base address not set - upgrade BIOS or use force_addr=0xaddr\n" ); |
825 | return -ENODEV; |
826 | } |
827 | if (force_addr && address != force_addr) { |
828 | /* doesn't work for some chips? */ |
829 | dev_err(&dev->dev, "Failed to force ISA address\n" ); |
830 | return -ENODEV; |
831 | } |
832 | |
833 | err = pci_read_config_byte(dev, SIS5595_ENABLE_REG, val: &enable); |
834 | if (err != PCIBIOS_SUCCESSFUL) { |
835 | dev_err(&dev->dev, "Failed to read enable register\n" ); |
836 | return -ENODEV; |
837 | } |
838 | if (!(enable & 0x80)) { |
839 | err = pci_write_config_byte(dev, SIS5595_ENABLE_REG, val: enable | 0x80); |
840 | if (err != PCIBIOS_SUCCESSFUL) |
841 | goto enable_fail; |
842 | |
843 | err = pci_read_config_byte(dev, SIS5595_ENABLE_REG, val: &enable); |
844 | if (err != PCIBIOS_SUCCESSFUL) |
845 | goto enable_fail; |
846 | |
847 | /* doesn't work for some chips! */ |
848 | if (!(enable & 0x80)) |
849 | goto enable_fail; |
850 | } |
851 | |
852 | if (platform_driver_register(&sis5595_driver)) { |
853 | dev_dbg(&dev->dev, "Failed to register sis5595 driver\n" ); |
854 | goto exit; |
855 | } |
856 | |
857 | s_bridge = pci_dev_get(dev); |
858 | /* Sets global pdev as a side effect */ |
859 | if (sis5595_device_add(address)) |
860 | goto exit_unregister; |
861 | |
862 | /* |
863 | * Always return failure here. This is to allow other drivers to bind |
864 | * to this pci device. We don't really want to have control over the |
865 | * pci device, we only wanted to read as few register values from it. |
866 | */ |
867 | return -ENODEV; |
868 | |
869 | enable_fail: |
870 | dev_err(&dev->dev, "Failed to enable HWM device\n" ); |
871 | goto exit; |
872 | |
873 | exit_unregister: |
874 | pci_dev_put(dev); |
875 | platform_driver_unregister(&sis5595_driver); |
876 | exit: |
877 | return -ENODEV; |
878 | } |
879 | |
880 | static struct pci_driver sis5595_pci_driver = { |
881 | .name = DRIVER_NAME, |
882 | .id_table = sis5595_pci_ids, |
883 | .probe = sis5595_pci_probe, |
884 | }; |
885 | |
886 | static int __init sm_sis5595_init(void) |
887 | { |
888 | return pci_register_driver(&sis5595_pci_driver); |
889 | } |
890 | |
891 | static void __exit sm_sis5595_exit(void) |
892 | { |
893 | pci_unregister_driver(dev: &sis5595_pci_driver); |
894 | if (s_bridge != NULL) { |
895 | platform_device_unregister(pdev); |
896 | platform_driver_unregister(&sis5595_driver); |
897 | pci_dev_put(dev: s_bridge); |
898 | s_bridge = NULL; |
899 | } |
900 | } |
901 | |
902 | MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>" ); |
903 | MODULE_DESCRIPTION("SiS 5595 Sensor device" ); |
904 | MODULE_LICENSE("GPL" ); |
905 | |
906 | module_init(sm_sis5595_init); |
907 | module_exit(sm_sis5595_exit); |
908 | |