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 (defaults to 2) |
157 | * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) |
158 | */ |
159 | static inline u8 DIV_TO_REG(int val) |
160 | { |
161 | return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1; |
162 | } |
163 | #define DIV_FROM_REG(val) (1 << (val)) |
164 | |
165 | /* |
166 | * For each registered chip, we need to keep some data in memory. |
167 | * The structure is dynamically allocated. |
168 | */ |
169 | struct sis5595_data { |
170 | unsigned short addr; |
171 | const char *name; |
172 | struct device *hwmon_dev; |
173 | struct mutex lock; |
174 | |
175 | struct mutex update_lock; |
176 | bool valid; /* true if following fields are valid */ |
177 | unsigned long last_updated; /* In jiffies */ |
178 | char maxins; /* == 3 if temp enabled, otherwise == 4 */ |
179 | u8 revision; /* Reg. value */ |
180 | |
181 | u8 in[5]; /* Register value */ |
182 | u8 in_max[5]; /* Register value */ |
183 | u8 in_min[5]; /* Register value */ |
184 | u8 fan[2]; /* Register value */ |
185 | u8 fan_min[2]; /* Register value */ |
186 | s8 temp; /* Register value */ |
187 | s8 temp_over; /* Register value */ |
188 | s8 temp_hyst; /* Register value */ |
189 | u8 fan_div[2]; /* Register encoding, shifted right */ |
190 | u16 alarms; /* Register encoding, combined */ |
191 | }; |
192 | |
193 | static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ |
194 | |
195 | /* ISA access must be locked explicitly. */ |
196 | static int sis5595_read_value(struct sis5595_data *data, u8 reg) |
197 | { |
198 | int res; |
199 | |
200 | mutex_lock(&data->lock); |
201 | outb_p(value: reg, port: data->addr + SIS5595_ADDR_REG_OFFSET); |
202 | res = inb_p(port: data->addr + SIS5595_DATA_REG_OFFSET); |
203 | mutex_unlock(lock: &data->lock); |
204 | return res; |
205 | } |
206 | |
207 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value) |
208 | { |
209 | mutex_lock(&data->lock); |
210 | outb_p(value: reg, port: data->addr + SIS5595_ADDR_REG_OFFSET); |
211 | outb_p(value, port: data->addr + SIS5595_DATA_REG_OFFSET); |
212 | mutex_unlock(lock: &data->lock); |
213 | } |
214 | |
215 | static struct sis5595_data *sis5595_update_device(struct device *dev) |
216 | { |
217 | struct sis5595_data *data = dev_get_drvdata(dev); |
218 | int i; |
219 | |
220 | mutex_lock(&data->update_lock); |
221 | |
222 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
223 | || !data->valid) { |
224 | |
225 | for (i = 0; i <= data->maxins; i++) { |
226 | data->in[i] = |
227 | sis5595_read_value(data, SIS5595_REG_IN(i)); |
228 | data->in_min[i] = |
229 | sis5595_read_value(data, |
230 | SIS5595_REG_IN_MIN(i)); |
231 | data->in_max[i] = |
232 | sis5595_read_value(data, |
233 | SIS5595_REG_IN_MAX(i)); |
234 | } |
235 | for (i = 0; i < 2; i++) { |
236 | data->fan[i] = |
237 | sis5595_read_value(data, SIS5595_REG_FAN(i)); |
238 | data->fan_min[i] = |
239 | sis5595_read_value(data, |
240 | SIS5595_REG_FAN_MIN(i)); |
241 | } |
242 | if (data->maxins == 3) { |
243 | data->temp = |
244 | sis5595_read_value(data, SIS5595_REG_TEMP); |
245 | data->temp_over = |
246 | sis5595_read_value(data, SIS5595_REG_TEMP_OVER); |
247 | data->temp_hyst = |
248 | sis5595_read_value(data, SIS5595_REG_TEMP_HYST); |
249 | } |
250 | i = sis5595_read_value(data, SIS5595_REG_FANDIV); |
251 | data->fan_div[0] = (i >> 4) & 0x03; |
252 | data->fan_div[1] = i >> 6; |
253 | data->alarms = |
254 | sis5595_read_value(data, SIS5595_REG_ALARM1) | |
255 | (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8); |
256 | data->last_updated = jiffies; |
257 | data->valid = true; |
258 | } |
259 | |
260 | mutex_unlock(lock: &data->update_lock); |
261 | |
262 | return data; |
263 | } |
264 | |
265 | /* 4 Voltages */ |
266 | static ssize_t in_show(struct device *dev, struct device_attribute *da, |
267 | char *buf) |
268 | { |
269 | struct sis5595_data *data = sis5595_update_device(dev); |
270 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
271 | int nr = attr->index; |
272 | return sprintf(buf, fmt: "%d\n" , IN_FROM_REG(data->in[nr])); |
273 | } |
274 | |
275 | static ssize_t in_min_show(struct device *dev, struct device_attribute *da, |
276 | char *buf) |
277 | { |
278 | struct sis5595_data *data = sis5595_update_device(dev); |
279 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
280 | int nr = attr->index; |
281 | return sprintf(buf, fmt: "%d\n" , IN_FROM_REG(data->in_min[nr])); |
282 | } |
283 | |
284 | static ssize_t in_max_show(struct device *dev, struct device_attribute *da, |
285 | char *buf) |
286 | { |
287 | struct sis5595_data *data = sis5595_update_device(dev); |
288 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
289 | int nr = attr->index; |
290 | return sprintf(buf, fmt: "%d\n" , IN_FROM_REG(data->in_max[nr])); |
291 | } |
292 | |
293 | static ssize_t in_min_store(struct device *dev, struct device_attribute *da, |
294 | const char *buf, size_t count) |
295 | { |
296 | struct sis5595_data *data = dev_get_drvdata(dev); |
297 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
298 | int nr = attr->index; |
299 | unsigned long val; |
300 | int err; |
301 | |
302 | err = kstrtoul(s: buf, base: 10, res: &val); |
303 | if (err) |
304 | return err; |
305 | |
306 | mutex_lock(&data->update_lock); |
307 | data->in_min[nr] = IN_TO_REG(val); |
308 | sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), value: data->in_min[nr]); |
309 | mutex_unlock(lock: &data->update_lock); |
310 | return count; |
311 | } |
312 | |
313 | static ssize_t in_max_store(struct device *dev, struct device_attribute *da, |
314 | const char *buf, size_t count) |
315 | { |
316 | struct sis5595_data *data = dev_get_drvdata(dev); |
317 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
318 | int nr = attr->index; |
319 | unsigned long val; |
320 | int err; |
321 | |
322 | err = kstrtoul(s: buf, base: 10, res: &val); |
323 | if (err) |
324 | return err; |
325 | |
326 | mutex_lock(&data->update_lock); |
327 | data->in_max[nr] = IN_TO_REG(val); |
328 | sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), value: data->in_max[nr]); |
329 | mutex_unlock(lock: &data->update_lock); |
330 | return count; |
331 | } |
332 | |
333 | static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0); |
334 | static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); |
335 | static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); |
336 | static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1); |
337 | static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); |
338 | static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); |
339 | static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2); |
340 | static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); |
341 | static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); |
342 | static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3); |
343 | static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); |
344 | static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); |
345 | static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4); |
346 | static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); |
347 | static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); |
348 | |
349 | /* Temperature */ |
350 | static ssize_t temp1_input_show(struct device *dev, |
351 | struct device_attribute *attr, char *buf) |
352 | { |
353 | struct sis5595_data *data = sis5595_update_device(dev); |
354 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(val: data->temp)); |
355 | } |
356 | |
357 | static ssize_t temp1_max_show(struct device *dev, struct device_attribute *attr, |
358 | char *buf) |
359 | { |
360 | struct sis5595_data *data = sis5595_update_device(dev); |
361 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(val: data->temp_over)); |
362 | } |
363 | |
364 | static ssize_t temp1_max_store(struct device *dev, |
365 | struct device_attribute *attr, const char *buf, |
366 | size_t count) |
367 | { |
368 | struct sis5595_data *data = dev_get_drvdata(dev); |
369 | long val; |
370 | int err; |
371 | |
372 | err = kstrtol(s: buf, base: 10, res: &val); |
373 | if (err) |
374 | return err; |
375 | |
376 | mutex_lock(&data->update_lock); |
377 | data->temp_over = TEMP_TO_REG(val); |
378 | sis5595_write_value(data, SIS5595_REG_TEMP_OVER, value: data->temp_over); |
379 | mutex_unlock(lock: &data->update_lock); |
380 | return count; |
381 | } |
382 | |
383 | static ssize_t temp1_max_hyst_show(struct device *dev, |
384 | struct device_attribute *attr, char *buf) |
385 | { |
386 | struct sis5595_data *data = sis5595_update_device(dev); |
387 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(val: data->temp_hyst)); |
388 | } |
389 | |
390 | static ssize_t temp1_max_hyst_store(struct device *dev, |
391 | struct device_attribute *attr, |
392 | const char *buf, size_t count) |
393 | { |
394 | struct sis5595_data *data = dev_get_drvdata(dev); |
395 | long val; |
396 | int err; |
397 | |
398 | err = kstrtol(s: buf, base: 10, res: &val); |
399 | if (err) |
400 | return err; |
401 | |
402 | mutex_lock(&data->update_lock); |
403 | data->temp_hyst = TEMP_TO_REG(val); |
404 | sis5595_write_value(data, SIS5595_REG_TEMP_HYST, value: data->temp_hyst); |
405 | mutex_unlock(lock: &data->update_lock); |
406 | return count; |
407 | } |
408 | |
409 | static DEVICE_ATTR_RO(temp1_input); |
410 | static DEVICE_ATTR_RW(temp1_max); |
411 | static DEVICE_ATTR_RW(temp1_max_hyst); |
412 | |
413 | /* 2 Fans */ |
414 | static ssize_t fan_show(struct device *dev, struct device_attribute *da, |
415 | char *buf) |
416 | { |
417 | struct sis5595_data *data = sis5595_update_device(dev); |
418 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
419 | int nr = attr->index; |
420 | return sprintf(buf, fmt: "%d\n" , FAN_FROM_REG(val: data->fan[nr], |
421 | DIV_FROM_REG(data->fan_div[nr]))); |
422 | } |
423 | |
424 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *da, |
425 | char *buf) |
426 | { |
427 | struct sis5595_data *data = sis5595_update_device(dev); |
428 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
429 | int nr = attr->index; |
430 | return sprintf(buf, fmt: "%d\n" , FAN_FROM_REG(val: data->fan_min[nr], |
431 | DIV_FROM_REG(data->fan_div[nr]))); |
432 | } |
433 | |
434 | static ssize_t fan_min_store(struct device *dev, struct device_attribute *da, |
435 | const char *buf, size_t count) |
436 | { |
437 | struct sis5595_data *data = dev_get_drvdata(dev); |
438 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
439 | int nr = attr->index; |
440 | unsigned long val; |
441 | int err; |
442 | |
443 | err = kstrtoul(s: buf, base: 10, res: &val); |
444 | if (err) |
445 | return err; |
446 | |
447 | mutex_lock(&data->update_lock); |
448 | data->fan_min[nr] = FAN_TO_REG(rpm: val, DIV_FROM_REG(data->fan_div[nr])); |
449 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), value: data->fan_min[nr]); |
450 | mutex_unlock(lock: &data->update_lock); |
451 | return count; |
452 | } |
453 | |
454 | static ssize_t fan_div_show(struct device *dev, struct device_attribute *da, |
455 | char *buf) |
456 | { |
457 | struct sis5595_data *data = sis5595_update_device(dev); |
458 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
459 | int nr = attr->index; |
460 | return sprintf(buf, fmt: "%d\n" , DIV_FROM_REG(data->fan_div[nr])); |
461 | } |
462 | |
463 | /* |
464 | * Note: we save and restore the fan minimum here, because its value is |
465 | * determined in part by the fan divisor. This follows the principle of |
466 | * least surprise; the user doesn't expect the fan minimum to change just |
467 | * because the divisor changed. |
468 | */ |
469 | static ssize_t fan_div_store(struct device *dev, struct device_attribute *da, |
470 | const char *buf, size_t count) |
471 | { |
472 | struct sis5595_data *data = dev_get_drvdata(dev); |
473 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
474 | int nr = attr->index; |
475 | unsigned long min; |
476 | int reg; |
477 | unsigned long val; |
478 | int err; |
479 | |
480 | err = kstrtoul(s: buf, base: 10, res: &val); |
481 | if (err) |
482 | return err; |
483 | |
484 | mutex_lock(&data->update_lock); |
485 | min = FAN_FROM_REG(val: data->fan_min[nr], |
486 | DIV_FROM_REG(data->fan_div[nr])); |
487 | reg = sis5595_read_value(data, SIS5595_REG_FANDIV); |
488 | |
489 | switch (val) { |
490 | case 1: |
491 | data->fan_div[nr] = 0; |
492 | break; |
493 | case 2: |
494 | data->fan_div[nr] = 1; |
495 | break; |
496 | case 4: |
497 | data->fan_div[nr] = 2; |
498 | break; |
499 | case 8: |
500 | data->fan_div[nr] = 3; |
501 | break; |
502 | default: |
503 | dev_err(dev, |
504 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n" , |
505 | val); |
506 | mutex_unlock(lock: &data->update_lock); |
507 | return -EINVAL; |
508 | } |
509 | |
510 | switch (nr) { |
511 | case 0: |
512 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); |
513 | break; |
514 | case 1: |
515 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); |
516 | break; |
517 | } |
518 | sis5595_write_value(data, SIS5595_REG_FANDIV, value: reg); |
519 | data->fan_min[nr] = |
520 | FAN_TO_REG(rpm: min, DIV_FROM_REG(data->fan_div[nr])); |
521 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), value: data->fan_min[nr]); |
522 | mutex_unlock(lock: &data->update_lock); |
523 | return count; |
524 | } |
525 | |
526 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
527 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); |
528 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); |
529 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); |
530 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
531 | static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); |
532 | |
533 | /* Alarms */ |
534 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
535 | char *buf) |
536 | { |
537 | struct sis5595_data *data = sis5595_update_device(dev); |
538 | return sprintf(buf, fmt: "%d\n" , data->alarms); |
539 | } |
540 | static DEVICE_ATTR_RO(alarms); |
541 | |
542 | static ssize_t alarm_show(struct device *dev, struct device_attribute *da, |
543 | char *buf) |
544 | { |
545 | struct sis5595_data *data = sis5595_update_device(dev); |
546 | int nr = to_sensor_dev_attr(da)->index; |
547 | return sprintf(buf, fmt: "%u\n" , (data->alarms >> nr) & 1); |
548 | } |
549 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
550 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); |
551 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); |
552 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); |
553 | static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 15); |
554 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); |
555 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); |
556 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 15); |
557 | |
558 | static ssize_t name_show(struct device *dev, struct device_attribute *attr, |
559 | char *buf) |
560 | { |
561 | struct sis5595_data *data = dev_get_drvdata(dev); |
562 | return sprintf(buf, fmt: "%s\n" , data->name); |
563 | } |
564 | static DEVICE_ATTR_RO(name); |
565 | |
566 | static struct attribute *sis5595_attributes[] = { |
567 | &sensor_dev_attr_in0_input.dev_attr.attr, |
568 | &sensor_dev_attr_in0_min.dev_attr.attr, |
569 | &sensor_dev_attr_in0_max.dev_attr.attr, |
570 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
571 | &sensor_dev_attr_in1_input.dev_attr.attr, |
572 | &sensor_dev_attr_in1_min.dev_attr.attr, |
573 | &sensor_dev_attr_in1_max.dev_attr.attr, |
574 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
575 | &sensor_dev_attr_in2_input.dev_attr.attr, |
576 | &sensor_dev_attr_in2_min.dev_attr.attr, |
577 | &sensor_dev_attr_in2_max.dev_attr.attr, |
578 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
579 | &sensor_dev_attr_in3_input.dev_attr.attr, |
580 | &sensor_dev_attr_in3_min.dev_attr.attr, |
581 | &sensor_dev_attr_in3_max.dev_attr.attr, |
582 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
583 | |
584 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
585 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
586 | &sensor_dev_attr_fan1_div.dev_attr.attr, |
587 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
588 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
589 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
590 | &sensor_dev_attr_fan2_div.dev_attr.attr, |
591 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
592 | |
593 | &dev_attr_alarms.attr, |
594 | &dev_attr_name.attr, |
595 | NULL |
596 | }; |
597 | |
598 | static const struct attribute_group sis5595_group = { |
599 | .attrs = sis5595_attributes, |
600 | }; |
601 | |
602 | static struct attribute *sis5595_attributes_in4[] = { |
603 | &sensor_dev_attr_in4_input.dev_attr.attr, |
604 | &sensor_dev_attr_in4_min.dev_attr.attr, |
605 | &sensor_dev_attr_in4_max.dev_attr.attr, |
606 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
607 | NULL |
608 | }; |
609 | |
610 | static const struct attribute_group sis5595_group_in4 = { |
611 | .attrs = sis5595_attributes_in4, |
612 | }; |
613 | |
614 | static struct attribute *sis5595_attributes_temp1[] = { |
615 | &dev_attr_temp1_input.attr, |
616 | &dev_attr_temp1_max.attr, |
617 | &dev_attr_temp1_max_hyst.attr, |
618 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
619 | NULL |
620 | }; |
621 | |
622 | static const struct attribute_group sis5595_group_temp1 = { |
623 | .attrs = sis5595_attributes_temp1, |
624 | }; |
625 | |
626 | /* Called when we have found a new SIS5595. */ |
627 | static void sis5595_init_device(struct sis5595_data *data) |
628 | { |
629 | u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG); |
630 | if (!(config & 0x01)) |
631 | sis5595_write_value(data, SIS5595_REG_CONFIG, |
632 | value: (config & 0xf7) | 0x01); |
633 | } |
634 | |
635 | /* This is called when the module is loaded */ |
636 | static int sis5595_probe(struct platform_device *pdev) |
637 | { |
638 | int err = 0; |
639 | int i; |
640 | struct sis5595_data *data; |
641 | struct resource *res; |
642 | char val; |
643 | |
644 | /* Reserve the ISA region */ |
645 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
646 | if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT, |
647 | DRIVER_NAME)) |
648 | return -EBUSY; |
649 | |
650 | data = devm_kzalloc(dev: &pdev->dev, size: sizeof(struct sis5595_data), |
651 | GFP_KERNEL); |
652 | if (!data) |
653 | return -ENOMEM; |
654 | |
655 | mutex_init(&data->lock); |
656 | mutex_init(&data->update_lock); |
657 | data->addr = res->start; |
658 | data->name = DRIVER_NAME; |
659 | platform_set_drvdata(pdev, data); |
660 | |
661 | /* |
662 | * Check revision and pin registers to determine whether 4 or 5 voltages |
663 | */ |
664 | data->revision = s_bridge->revision; |
665 | /* 4 voltages, 1 temp */ |
666 | data->maxins = 3; |
667 | if (data->revision >= REV2MIN) { |
668 | pci_read_config_byte(dev: s_bridge, SIS5595_PIN_REG, val: &val); |
669 | if (!(val & 0x80)) |
670 | /* 5 voltages, no temps */ |
671 | data->maxins = 4; |
672 | } |
673 | |
674 | /* Initialize the SIS5595 chip */ |
675 | sis5595_init_device(data); |
676 | |
677 | /* A few vars need to be filled upon startup */ |
678 | for (i = 0; i < 2; i++) { |
679 | data->fan_min[i] = sis5595_read_value(data, |
680 | SIS5595_REG_FAN_MIN(i)); |
681 | } |
682 | |
683 | /* Register sysfs hooks */ |
684 | err = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &sis5595_group); |
685 | if (err) |
686 | return err; |
687 | if (data->maxins == 4) { |
688 | err = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_in4); |
689 | if (err) |
690 | goto exit_remove_files; |
691 | } else { |
692 | err = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_temp1); |
693 | if (err) |
694 | goto exit_remove_files; |
695 | } |
696 | |
697 | data->hwmon_dev = hwmon_device_register(dev: &pdev->dev); |
698 | if (IS_ERR(ptr: data->hwmon_dev)) { |
699 | err = PTR_ERR(ptr: data->hwmon_dev); |
700 | goto exit_remove_files; |
701 | } |
702 | |
703 | return 0; |
704 | |
705 | exit_remove_files: |
706 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group); |
707 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_in4); |
708 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_temp1); |
709 | return err; |
710 | } |
711 | |
712 | static void sis5595_remove(struct platform_device *pdev) |
713 | { |
714 | struct sis5595_data *data = platform_get_drvdata(pdev); |
715 | |
716 | hwmon_device_unregister(dev: data->hwmon_dev); |
717 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group); |
718 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_in4); |
719 | sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &sis5595_group_temp1); |
720 | } |
721 | |
722 | static const struct pci_device_id sis5595_pci_ids[] = { |
723 | { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, |
724 | { 0, } |
725 | }; |
726 | |
727 | MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); |
728 | |
729 | static int blacklist[] = { |
730 | PCI_DEVICE_ID_SI_540, |
731 | PCI_DEVICE_ID_SI_550, |
732 | PCI_DEVICE_ID_SI_630, |
733 | PCI_DEVICE_ID_SI_645, |
734 | PCI_DEVICE_ID_SI_730, |
735 | PCI_DEVICE_ID_SI_735, |
736 | PCI_DEVICE_ID_SI_5511, /* |
737 | * 5513 chip has the 0008 device but |
738 | * that ID shows up in other chips so we |
739 | * use the 5511 ID for recognition |
740 | */ |
741 | PCI_DEVICE_ID_SI_5597, |
742 | PCI_DEVICE_ID_SI_5598, |
743 | 0 }; |
744 | |
745 | static int sis5595_device_add(unsigned short address) |
746 | { |
747 | struct resource res = { |
748 | .start = address, |
749 | .end = address + SIS5595_EXTENT - 1, |
750 | .name = DRIVER_NAME, |
751 | .flags = IORESOURCE_IO, |
752 | }; |
753 | int err; |
754 | |
755 | err = acpi_check_resource_conflict(res: &res); |
756 | if (err) |
757 | goto exit; |
758 | |
759 | pdev = platform_device_alloc(DRIVER_NAME, id: address); |
760 | if (!pdev) { |
761 | err = -ENOMEM; |
762 | pr_err("Device allocation failed\n" ); |
763 | goto exit; |
764 | } |
765 | |
766 | err = platform_device_add_resources(pdev, res: &res, num: 1); |
767 | if (err) { |
768 | pr_err("Device resource addition failed (%d)\n" , err); |
769 | goto exit_device_put; |
770 | } |
771 | |
772 | err = platform_device_add(pdev); |
773 | if (err) { |
774 | pr_err("Device addition failed (%d)\n" , err); |
775 | goto exit_device_put; |
776 | } |
777 | |
778 | return 0; |
779 | |
780 | exit_device_put: |
781 | platform_device_put(pdev); |
782 | exit: |
783 | return err; |
784 | } |
785 | |
786 | static struct platform_driver sis5595_driver = { |
787 | .driver = { |
788 | .name = DRIVER_NAME, |
789 | }, |
790 | .probe = sis5595_probe, |
791 | .remove_new = sis5595_remove, |
792 | }; |
793 | |
794 | static int sis5595_pci_probe(struct pci_dev *dev, |
795 | const struct pci_device_id *id) |
796 | { |
797 | u16 address; |
798 | u8 enable; |
799 | int *i, err; |
800 | |
801 | for (i = blacklist; *i != 0; i++) { |
802 | struct pci_dev *d; |
803 | d = pci_get_device(PCI_VENDOR_ID_SI, device: *i, NULL); |
804 | if (d) { |
805 | dev_err(&d->dev, |
806 | "Looked for SIS5595 but found unsupported device %.4x\n" , |
807 | *i); |
808 | pci_dev_put(dev: d); |
809 | return -ENODEV; |
810 | } |
811 | } |
812 | |
813 | force_addr &= ~(SIS5595_EXTENT - 1); |
814 | if (force_addr) { |
815 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n" , force_addr); |
816 | pci_write_config_word(dev, SIS5595_BASE_REG, val: force_addr); |
817 | } |
818 | |
819 | err = pci_read_config_word(dev, SIS5595_BASE_REG, val: &address); |
820 | if (err != PCIBIOS_SUCCESSFUL) { |
821 | dev_err(&dev->dev, "Failed to read ISA address\n" ); |
822 | return -ENODEV; |
823 | } |
824 | |
825 | address &= ~(SIS5595_EXTENT - 1); |
826 | if (!address) { |
827 | dev_err(&dev->dev, |
828 | "Base address not set - upgrade BIOS or use force_addr=0xaddr\n" ); |
829 | return -ENODEV; |
830 | } |
831 | if (force_addr && address != force_addr) { |
832 | /* doesn't work for some chips? */ |
833 | dev_err(&dev->dev, "Failed to force ISA address\n" ); |
834 | return -ENODEV; |
835 | } |
836 | |
837 | err = pci_read_config_byte(dev, SIS5595_ENABLE_REG, val: &enable); |
838 | if (err != PCIBIOS_SUCCESSFUL) { |
839 | dev_err(&dev->dev, "Failed to read enable register\n" ); |
840 | return -ENODEV; |
841 | } |
842 | if (!(enable & 0x80)) { |
843 | err = pci_write_config_byte(dev, SIS5595_ENABLE_REG, val: enable | 0x80); |
844 | if (err != PCIBIOS_SUCCESSFUL) |
845 | goto enable_fail; |
846 | |
847 | err = pci_read_config_byte(dev, SIS5595_ENABLE_REG, val: &enable); |
848 | if (err != PCIBIOS_SUCCESSFUL) |
849 | goto enable_fail; |
850 | |
851 | /* doesn't work for some chips! */ |
852 | if (!(enable & 0x80)) |
853 | goto enable_fail; |
854 | } |
855 | |
856 | if (platform_driver_register(&sis5595_driver)) { |
857 | dev_dbg(&dev->dev, "Failed to register sis5595 driver\n" ); |
858 | goto exit; |
859 | } |
860 | |
861 | s_bridge = pci_dev_get(dev); |
862 | /* Sets global pdev as a side effect */ |
863 | if (sis5595_device_add(address)) |
864 | goto exit_unregister; |
865 | |
866 | /* |
867 | * Always return failure here. This is to allow other drivers to bind |
868 | * to this pci device. We don't really want to have control over the |
869 | * pci device, we only wanted to read as few register values from it. |
870 | */ |
871 | return -ENODEV; |
872 | |
873 | enable_fail: |
874 | dev_err(&dev->dev, "Failed to enable HWM device\n" ); |
875 | goto exit; |
876 | |
877 | exit_unregister: |
878 | pci_dev_put(dev); |
879 | platform_driver_unregister(&sis5595_driver); |
880 | exit: |
881 | return -ENODEV; |
882 | } |
883 | |
884 | static struct pci_driver sis5595_pci_driver = { |
885 | .name = DRIVER_NAME, |
886 | .id_table = sis5595_pci_ids, |
887 | .probe = sis5595_pci_probe, |
888 | }; |
889 | |
890 | static int __init sm_sis5595_init(void) |
891 | { |
892 | return pci_register_driver(&sis5595_pci_driver); |
893 | } |
894 | |
895 | static void __exit sm_sis5595_exit(void) |
896 | { |
897 | pci_unregister_driver(dev: &sis5595_pci_driver); |
898 | if (s_bridge != NULL) { |
899 | platform_device_unregister(pdev); |
900 | platform_driver_unregister(&sis5595_driver); |
901 | pci_dev_put(dev: s_bridge); |
902 | s_bridge = NULL; |
903 | } |
904 | } |
905 | |
906 | MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>" ); |
907 | MODULE_DESCRIPTION("SiS 5595 Sensor device" ); |
908 | MODULE_LICENSE("GPL" ); |
909 | |
910 | module_init(sm_sis5595_init); |
911 | module_exit(sm_sis5595_exit); |
912 | |