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1 | /* |
2 | * sis5595.c - Part of lm_sensors, Linux kernel modules |
3 | * for hardware monitoring |
4 | * |
5 | * Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, |
6 | * Kyösti Mälkki <kmalkki@cc.hut.fi>, and |
7 | * Mark D. Studebaker <mdsxyz123@yahoo.com> |
8 | * Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with |
9 | * the help of Jean Delvare <khali@linux-fr.org> |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License as published by |
13 | * the Free Software Foundation; either version 2 of the License, or |
14 | * (at your option) any later version. |
15 | * |
16 | * This program is distributed in the hope that it will be useful, |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
19 | * GNU General Public License for more details. |
20 | * |
21 | * You should have received a copy of the GNU General Public License |
22 | * along with this program; if not, write to the Free Software |
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
24 | */ |
25 | |
26 | /* |
27 | * SiS southbridge has a LM78-like chip integrated on the same IC. |
28 | * This driver is a customized copy of lm78.c |
29 | * |
30 | * Supports following revisions: |
31 | * Version PCI ID PCI Revision |
32 | * 1 1039/0008 AF or less |
33 | * 2 1039/0008 B0 or greater |
34 | * |
35 | * Note: these chips contain a 0008 device which is incompatible with the |
36 | * 5595. We recognize these by the presence of the listed |
37 | * "blacklist" PCI ID and refuse to load. |
38 | * |
39 | * NOT SUPPORTED PCI ID BLACKLIST PCI ID |
40 | * 540 0008 0540 |
41 | * 550 0008 0550 |
42 | * 5513 0008 5511 |
43 | * 5581 0008 5597 |
44 | * 5582 0008 5597 |
45 | * 5597 0008 5597 |
46 | * 5598 0008 5597/5598 |
47 | * 630 0008 0630 |
48 | * 645 0008 0645 |
49 | * 730 0008 0730 |
50 | * 735 0008 0735 |
51 | */ |
52 | |
53 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
54 | |
55 | #include <linux/module.h> |
56 | #include <linux/slab.h> |
57 | #include <linux/ioport.h> |
58 | #include <linux/pci.h> |
59 | #include <linux/platform_device.h> |
60 | #include <linux/hwmon.h> |
61 | #include <linux/hwmon-sysfs.h> |
62 | #include <linux/err.h> |
63 | #include <linux/init.h> |
64 | #include <linux/jiffies.h> |
65 | #include <linux/mutex.h> |
66 | #include <linux/sysfs.h> |
67 | #include <linux/acpi.h> |
68 | #include <linux/io.h> |
69 | |
70 | |
71 | /* |
72 | * If force_addr is set to anything different from 0, we forcibly enable |
73 | * the device at the given address. |
74 | */ |
75 | static u16 force_addr; |
76 | module_param(force_addr, ushort, 0); |
77 | MODULE_PARM_DESC(force_addr, |
78 | "Initialize the base address of the sensors"); |
79 | |
80 | static struct platform_device *pdev; |
81 | |
82 | /* Many SIS5595 constants specified below */ |
83 | |
84 | /* Length of ISA address segment */ |
85 | #define SIS5595_EXTENT 8 |
86 | /* PCI Config Registers */ |
87 | #define SIS5595_BASE_REG 0x68 |
88 | #define SIS5595_PIN_REG 0x7A |
89 | #define SIS5595_ENABLE_REG 0x7B |
90 | |
91 | /* Where are the ISA address/data registers relative to the base address */ |
92 | #define SIS5595_ADDR_REG_OFFSET 5 |
93 | #define SIS5595_DATA_REG_OFFSET 6 |
94 | |
95 | /* The SIS5595 registers */ |
96 | #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) |
97 | #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) |
98 | #define SIS5595_REG_IN(nr) (0x20 + (nr)) |
99 | |
100 | #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) |
101 | #define SIS5595_REG_FAN(nr) (0x28 + (nr)) |
102 | |
103 | /* |
104 | * On the first version of the chip, the temp registers are separate. |
105 | * On the second version, |
106 | * TEMP pin is shared with IN4, configured in PCI register 0x7A. |
107 | * The registers are the same as well. |
108 | * OVER and HYST are really MAX and MIN. |
109 | */ |
110 | |
111 | #define REV2MIN 0xb0 |
112 | #define SIS5595_REG_TEMP (((data->revision) >= REV2MIN) ? \ |
113 | SIS5595_REG_IN(4) : 0x27) |
114 | #define SIS5595_REG_TEMP_OVER (((data->revision) >= REV2MIN) ? \ |
115 | SIS5595_REG_IN_MAX(4) : 0x39) |
116 | #define SIS5595_REG_TEMP_HYST (((data->revision) >= REV2MIN) ? \ |
117 | SIS5595_REG_IN_MIN(4) : 0x3a) |
118 | |
119 | #define SIS5595_REG_CONFIG 0x40 |
120 | #define SIS5595_REG_ALARM1 0x41 |
121 | #define SIS5595_REG_ALARM2 0x42 |
122 | #define SIS5595_REG_FANDIV 0x47 |
123 | |
124 | /* |
125 | * Conversions. Limit checking is only done on the TO_REG |
126 | * variants. |
127 | */ |
128 | |
129 | /* |
130 | * IN: mV, (0V to 4.08V) |
131 | * REG: 16mV/bit |
132 | */ |
133 | static inline u8 IN_TO_REG(unsigned long val) |
134 | { |
135 | unsigned long nval = clamp_val(val, 0, 4080); |
136 | return (nval + 8) / 16; |
137 | } |
138 | #define IN_FROM_REG(val) ((val) * 16) |
139 | |
140 | static inline u8 FAN_TO_REG(long rpm, int div) |
141 | { |
142 | if (rpm <= 0) |
143 | return 255; |
144 | return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
145 | } |
146 | |
147 | static inline int FAN_FROM_REG(u8 val, int div) |
148 | { |
149 | return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div); |
150 | } |
151 | |
152 | /* |
153 | * TEMP: mC (-54.12C to +157.53C) |
154 | * REG: 0.83C/bit + 52.12, two's complement |
155 | */ |
156 | static inline int TEMP_FROM_REG(s8 val) |
157 | { |
158 | return val * 830 + 52120; |
159 | } |
160 | static inline s8 TEMP_TO_REG(int val) |
161 | { |
162 | int nval = clamp_val(val, -54120, 157530) ; |
163 | return nval < 0 ? (nval - 5212 - 415) / 830 : (nval - 5212 + 415) / 830; |
164 | } |
165 | |
166 | /* |
167 | * FAN DIV: 1, 2, 4, or 8 (defaults to 2) |
168 | * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) |
169 | */ |
170 | static inline u8 DIV_TO_REG(int val) |
171 | { |
172 | return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1; |
173 | } |
174 | #define DIV_FROM_REG(val) (1 << (val)) |
175 | |
176 | /* |
177 | * For each registered chip, we need to keep some data in memory. |
178 | * The structure is dynamically allocated. |
179 | */ |
180 | struct sis5595_data { |
181 | unsigned short addr; |
182 | const char *name; |
183 | struct device *hwmon_dev; |
184 | struct mutex lock; |
185 | |
186 | struct mutex update_lock; |
187 | char valid; /* !=0 if following fields are valid */ |
188 | unsigned long last_updated; /* In jiffies */ |
189 | char maxins; /* == 3 if temp enabled, otherwise == 4 */ |
190 | u8 revision; /* Reg. value */ |
191 | |
192 | u8 in[5]; /* Register value */ |
193 | u8 in_max[5]; /* Register value */ |
194 | u8 in_min[5]; /* Register value */ |
195 | u8 fan[2]; /* Register value */ |
196 | u8 fan_min[2]; /* Register value */ |
197 | s8 temp; /* Register value */ |
198 | s8 temp_over; /* Register value */ |
199 | s8 temp_hyst; /* Register value */ |
200 | u8 fan_div[2]; /* Register encoding, shifted right */ |
201 | u16 alarms; /* Register encoding, combined */ |
202 | }; |
203 | |
204 | static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ |
205 | |
206 | static int sis5595_probe(struct platform_device *pdev); |
207 | static int sis5595_remove(struct platform_device *pdev); |
208 | |
209 | static int sis5595_read_value(struct sis5595_data *data, u8 reg); |
210 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value); |
211 | static struct sis5595_data *sis5595_update_device(struct device *dev); |
212 | static void sis5595_init_device(struct sis5595_data *data); |
213 | |
214 | static struct platform_driver sis5595_driver = { |
215 | .driver = { |
216 | .owner = THIS_MODULE, |
217 | .name = "sis5595", |
218 | }, |
219 | .probe = sis5595_probe, |
220 | .remove = sis5595_remove, |
221 | }; |
222 | |
223 | /* 4 Voltages */ |
224 | static ssize_t show_in(struct device *dev, struct device_attribute *da, |
225 | char *buf) |
226 | { |
227 | struct sis5595_data *data = sis5595_update_device(dev); |
228 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
229 | int nr = attr->index; |
230 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); |
231 | } |
232 | |
233 | static ssize_t show_in_min(struct device *dev, struct device_attribute *da, |
234 | char *buf) |
235 | { |
236 | struct sis5595_data *data = sis5595_update_device(dev); |
237 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
238 | int nr = attr->index; |
239 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); |
240 | } |
241 | |
242 | static ssize_t show_in_max(struct device *dev, struct device_attribute *da, |
243 | char *buf) |
244 | { |
245 | struct sis5595_data *data = sis5595_update_device(dev); |
246 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
247 | int nr = attr->index; |
248 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); |
249 | } |
250 | |
251 | static ssize_t set_in_min(struct device *dev, struct device_attribute *da, |
252 | const char *buf, size_t count) |
253 | { |
254 | struct sis5595_data *data = dev_get_drvdata(dev); |
255 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
256 | int nr = attr->index; |
257 | unsigned long val; |
258 | int err; |
259 | |
260 | err = kstrtoul(buf, 10, &val); |
261 | if (err) |
262 | return err; |
263 | |
264 | mutex_lock(&data->update_lock); |
265 | data->in_min[nr] = IN_TO_REG(val); |
266 | sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); |
267 | mutex_unlock(&data->update_lock); |
268 | return count; |
269 | } |
270 | |
271 | static ssize_t set_in_max(struct device *dev, struct device_attribute *da, |
272 | const char *buf, size_t count) |
273 | { |
274 | struct sis5595_data *data = dev_get_drvdata(dev); |
275 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
276 | int nr = attr->index; |
277 | unsigned long val; |
278 | int err; |
279 | |
280 | err = kstrtoul(buf, 10, &val); |
281 | if (err) |
282 | return err; |
283 | |
284 | mutex_lock(&data->update_lock); |
285 | data->in_max[nr] = IN_TO_REG(val); |
286 | sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); |
287 | mutex_unlock(&data->update_lock); |
288 | return count; |
289 | } |
290 | |
291 | #define show_in_offset(offset) \ |
292 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
293 | show_in, NULL, offset); \ |
294 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
295 | show_in_min, set_in_min, offset); \ |
296 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
297 | show_in_max, set_in_max, offset); |
298 | |
299 | show_in_offset(0); |
300 | show_in_offset(1); |
301 | show_in_offset(2); |
302 | show_in_offset(3); |
303 | show_in_offset(4); |
304 | |
305 | /* Temperature */ |
306 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
307 | char *buf) |
308 | { |
309 | struct sis5595_data *data = sis5595_update_device(dev); |
310 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); |
311 | } |
312 | |
313 | static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, |
314 | char *buf) |
315 | { |
316 | struct sis5595_data *data = sis5595_update_device(dev); |
317 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); |
318 | } |
319 | |
320 | static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, |
321 | const char *buf, size_t count) |
322 | { |
323 | struct sis5595_data *data = dev_get_drvdata(dev); |
324 | long val; |
325 | int err; |
326 | |
327 | err = kstrtol(buf, 10, &val); |
328 | if (err) |
329 | return err; |
330 | |
331 | mutex_lock(&data->update_lock); |
332 | data->temp_over = TEMP_TO_REG(val); |
333 | sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over); |
334 | mutex_unlock(&data->update_lock); |
335 | return count; |
336 | } |
337 | |
338 | static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, |
339 | char *buf) |
340 | { |
341 | struct sis5595_data *data = sis5595_update_device(dev); |
342 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); |
343 | } |
344 | |
345 | static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, |
346 | const char *buf, size_t count) |
347 | { |
348 | struct sis5595_data *data = dev_get_drvdata(dev); |
349 | long val; |
350 | int err; |
351 | |
352 | err = kstrtol(buf, 10, &val); |
353 | if (err) |
354 | return err; |
355 | |
356 | mutex_lock(&data->update_lock); |
357 | data->temp_hyst = TEMP_TO_REG(val); |
358 | sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst); |
359 | mutex_unlock(&data->update_lock); |
360 | return count; |
361 | } |
362 | |
363 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); |
364 | static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, |
365 | show_temp_over, set_temp_over); |
366 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, |
367 | show_temp_hyst, set_temp_hyst); |
368 | |
369 | /* 2 Fans */ |
370 | static ssize_t show_fan(struct device *dev, struct device_attribute *da, |
371 | char *buf) |
372 | { |
373 | struct sis5595_data *data = sis5595_update_device(dev); |
374 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
375 | int nr = attr->index; |
376 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
377 | DIV_FROM_REG(data->fan_div[nr]))); |
378 | } |
379 | |
380 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *da, |
381 | char *buf) |
382 | { |
383 | struct sis5595_data *data = sis5595_update_device(dev); |
384 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
385 | int nr = attr->index; |
386 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], |
387 | DIV_FROM_REG(data->fan_div[nr]))); |
388 | } |
389 | |
390 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *da, |
391 | const char *buf, size_t count) |
392 | { |
393 | struct sis5595_data *data = dev_get_drvdata(dev); |
394 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
395 | int nr = attr->index; |
396 | unsigned long val; |
397 | int err; |
398 | |
399 | err = kstrtoul(buf, 10, &val); |
400 | if (err) |
401 | return err; |
402 | |
403 | mutex_lock(&data->update_lock); |
404 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
405 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
406 | mutex_unlock(&data->update_lock); |
407 | return count; |
408 | } |
409 | |
410 | static ssize_t show_fan_div(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, "%d\n", DIV_FROM_REG(data->fan_div[nr])); |
417 | } |
418 | |
419 | /* |
420 | * Note: we save and restore the fan minimum here, because its value is |
421 | * determined in part by the fan divisor. This follows the principle of |
422 | * least surprise; the user doesn't expect the fan minimum to change just |
423 | * because the divisor changed. |
424 | */ |
425 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, |
426 | const char *buf, size_t count) |
427 | { |
428 | struct sis5595_data *data = dev_get_drvdata(dev); |
429 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
430 | int nr = attr->index; |
431 | unsigned long min; |
432 | int reg; |
433 | unsigned long val; |
434 | int err; |
435 | |
436 | err = kstrtoul(buf, 10, &val); |
437 | if (err) |
438 | return err; |
439 | |
440 | mutex_lock(&data->update_lock); |
441 | min = FAN_FROM_REG(data->fan_min[nr], |
442 | DIV_FROM_REG(data->fan_div[nr])); |
443 | reg = sis5595_read_value(data, SIS5595_REG_FANDIV); |
444 | |
445 | switch (val) { |
446 | case 1: |
447 | data->fan_div[nr] = 0; |
448 | break; |
449 | case 2: |
450 | data->fan_div[nr] = 1; |
451 | break; |
452 | case 4: |
453 | data->fan_div[nr] = 2; |
454 | break; |
455 | case 8: |
456 | data->fan_div[nr] = 3; |
457 | break; |
458 | default: |
459 | dev_err(dev, "fan_div value %ld not " |
460 | "supported. Choose one of 1, 2, 4 or 8!\n", val); |
461 | mutex_unlock(&data->update_lock); |
462 | return -EINVAL; |
463 | } |
464 | |
465 | switch (nr) { |
466 | case 0: |
467 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); |
468 | break; |
469 | case 1: |
470 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); |
471 | break; |
472 | } |
473 | sis5595_write_value(data, SIS5595_REG_FANDIV, reg); |
474 | data->fan_min[nr] = |
475 | FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
476 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
477 | mutex_unlock(&data->update_lock); |
478 | return count; |
479 | } |
480 | |
481 | #define show_fan_offset(offset) \ |
482 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
483 | show_fan, NULL, offset - 1); \ |
484 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
485 | show_fan_min, set_fan_min, offset - 1); \ |
486 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ |
487 | show_fan_div, set_fan_div, offset - 1); |
488 | |
489 | show_fan_offset(1); |
490 | show_fan_offset(2); |
491 | |
492 | /* Alarms */ |
493 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
494 | char *buf) |
495 | { |
496 | struct sis5595_data *data = sis5595_update_device(dev); |
497 | return sprintf(buf, "%d\n", data->alarms); |
498 | } |
499 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
500 | |
501 | static ssize_t show_alarm(struct device *dev, struct device_attribute *da, |
502 | char *buf) |
503 | { |
504 | struct sis5595_data *data = sis5595_update_device(dev); |
505 | int nr = to_sensor_dev_attr(da)->index; |
506 | return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); |
507 | } |
508 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); |
509 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); |
510 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); |
511 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); |
512 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 15); |
513 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); |
514 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); |
515 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 15); |
516 | |
517 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, |
518 | char *buf) |
519 | { |
520 | struct sis5595_data *data = dev_get_drvdata(dev); |
521 | return sprintf(buf, "%s\n", data->name); |
522 | } |
523 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
524 | |
525 | static struct attribute *sis5595_attributes[] = { |
526 | &sensor_dev_attr_in0_input.dev_attr.attr, |
527 | &sensor_dev_attr_in0_min.dev_attr.attr, |
528 | &sensor_dev_attr_in0_max.dev_attr.attr, |
529 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
530 | &sensor_dev_attr_in1_input.dev_attr.attr, |
531 | &sensor_dev_attr_in1_min.dev_attr.attr, |
532 | &sensor_dev_attr_in1_max.dev_attr.attr, |
533 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
534 | &sensor_dev_attr_in2_input.dev_attr.attr, |
535 | &sensor_dev_attr_in2_min.dev_attr.attr, |
536 | &sensor_dev_attr_in2_max.dev_attr.attr, |
537 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
538 | &sensor_dev_attr_in3_input.dev_attr.attr, |
539 | &sensor_dev_attr_in3_min.dev_attr.attr, |
540 | &sensor_dev_attr_in3_max.dev_attr.attr, |
541 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
542 | |
543 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
544 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
545 | &sensor_dev_attr_fan1_div.dev_attr.attr, |
546 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
547 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
548 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
549 | &sensor_dev_attr_fan2_div.dev_attr.attr, |
550 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
551 | |
552 | &dev_attr_alarms.attr, |
553 | &dev_attr_name.attr, |
554 | NULL |
555 | }; |
556 | |
557 | static const struct attribute_group sis5595_group = { |
558 | .attrs = sis5595_attributes, |
559 | }; |
560 | |
561 | static struct attribute *sis5595_attributes_in4[] = { |
562 | &sensor_dev_attr_in4_input.dev_attr.attr, |
563 | &sensor_dev_attr_in4_min.dev_attr.attr, |
564 | &sensor_dev_attr_in4_max.dev_attr.attr, |
565 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
566 | NULL |
567 | }; |
568 | |
569 | static const struct attribute_group sis5595_group_in4 = { |
570 | .attrs = sis5595_attributes_in4, |
571 | }; |
572 | |
573 | static struct attribute *sis5595_attributes_temp1[] = { |
574 | &dev_attr_temp1_input.attr, |
575 | &dev_attr_temp1_max.attr, |
576 | &dev_attr_temp1_max_hyst.attr, |
577 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
578 | NULL |
579 | }; |
580 | |
581 | static const struct attribute_group sis5595_group_temp1 = { |
582 | .attrs = sis5595_attributes_temp1, |
583 | }; |
584 | |
585 | /* This is called when the module is loaded */ |
586 | static int sis5595_probe(struct platform_device *pdev) |
587 | { |
588 | int err = 0; |
589 | int i; |
590 | struct sis5595_data *data; |
591 | struct resource *res; |
592 | char val; |
593 | |
594 | /* Reserve the ISA region */ |
595 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
596 | if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT, |
597 | sis5595_driver.driver.name)) |
598 | return -EBUSY; |
599 | |
600 | data = devm_kzalloc(&pdev->dev, sizeof(struct sis5595_data), |
601 | GFP_KERNEL); |
602 | if (!data) |
603 | return -ENOMEM; |
604 | |
605 | mutex_init(&data->lock); |
606 | mutex_init(&data->update_lock); |
607 | data->addr = res->start; |
608 | data->name = "sis5595"; |
609 | platform_set_drvdata(pdev, data); |
610 | |
611 | /* |
612 | * Check revision and pin registers to determine whether 4 or 5 voltages |
613 | */ |
614 | data->revision = s_bridge->revision; |
615 | /* 4 voltages, 1 temp */ |
616 | data->maxins = 3; |
617 | if (data->revision >= REV2MIN) { |
618 | pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); |
619 | if (!(val & 0x80)) |
620 | /* 5 voltages, no temps */ |
621 | data->maxins = 4; |
622 | } |
623 | |
624 | /* Initialize the SIS5595 chip */ |
625 | sis5595_init_device(data); |
626 | |
627 | /* A few vars need to be filled upon startup */ |
628 | for (i = 0; i < 2; i++) { |
629 | data->fan_min[i] = sis5595_read_value(data, |
630 | SIS5595_REG_FAN_MIN(i)); |
631 | } |
632 | |
633 | /* Register sysfs hooks */ |
634 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group); |
635 | if (err) |
636 | return err; |
637 | if (data->maxins == 4) { |
638 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_in4); |
639 | if (err) |
640 | goto exit_remove_files; |
641 | } else { |
642 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_temp1); |
643 | if (err) |
644 | goto exit_remove_files; |
645 | } |
646 | |
647 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
648 | if (IS_ERR(data->hwmon_dev)) { |
649 | err = PTR_ERR(data->hwmon_dev); |
650 | goto exit_remove_files; |
651 | } |
652 | |
653 | return 0; |
654 | |
655 | exit_remove_files: |
656 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
657 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); |
658 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); |
659 | return err; |
660 | } |
661 | |
662 | static int sis5595_remove(struct platform_device *pdev) |
663 | { |
664 | struct sis5595_data *data = platform_get_drvdata(pdev); |
665 | |
666 | hwmon_device_unregister(data->hwmon_dev); |
667 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
668 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); |
669 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); |
670 | |
671 | return 0; |
672 | } |
673 | |
674 | |
675 | /* ISA access must be locked explicitly. */ |
676 | static int sis5595_read_value(struct sis5595_data *data, u8 reg) |
677 | { |
678 | int res; |
679 | |
680 | mutex_lock(&data->lock); |
681 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); |
682 | res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET); |
683 | mutex_unlock(&data->lock); |
684 | return res; |
685 | } |
686 | |
687 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value) |
688 | { |
689 | mutex_lock(&data->lock); |
690 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); |
691 | outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET); |
692 | mutex_unlock(&data->lock); |
693 | } |
694 | |
695 | /* Called when we have found a new SIS5595. */ |
696 | static void sis5595_init_device(struct sis5595_data *data) |
697 | { |
698 | u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG); |
699 | if (!(config & 0x01)) |
700 | sis5595_write_value(data, SIS5595_REG_CONFIG, |
701 | (config & 0xf7) | 0x01); |
702 | } |
703 | |
704 | static struct sis5595_data *sis5595_update_device(struct device *dev) |
705 | { |
706 | struct sis5595_data *data = dev_get_drvdata(dev); |
707 | int i; |
708 | |
709 | mutex_lock(&data->update_lock); |
710 | |
711 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
712 | || !data->valid) { |
713 | |
714 | for (i = 0; i <= data->maxins; i++) { |
715 | data->in[i] = |
716 | sis5595_read_value(data, SIS5595_REG_IN(i)); |
717 | data->in_min[i] = |
718 | sis5595_read_value(data, |
719 | SIS5595_REG_IN_MIN(i)); |
720 | data->in_max[i] = |
721 | sis5595_read_value(data, |
722 | SIS5595_REG_IN_MAX(i)); |
723 | } |
724 | for (i = 0; i < 2; i++) { |
725 | data->fan[i] = |
726 | sis5595_read_value(data, SIS5595_REG_FAN(i)); |
727 | data->fan_min[i] = |
728 | sis5595_read_value(data, |
729 | SIS5595_REG_FAN_MIN(i)); |
730 | } |
731 | if (data->maxins == 3) { |
732 | data->temp = |
733 | sis5595_read_value(data, SIS5595_REG_TEMP); |
734 | data->temp_over = |
735 | sis5595_read_value(data, SIS5595_REG_TEMP_OVER); |
736 | data->temp_hyst = |
737 | sis5595_read_value(data, SIS5595_REG_TEMP_HYST); |
738 | } |
739 | i = sis5595_read_value(data, SIS5595_REG_FANDIV); |
740 | data->fan_div[0] = (i >> 4) & 0x03; |
741 | data->fan_div[1] = i >> 6; |
742 | data->alarms = |
743 | sis5595_read_value(data, SIS5595_REG_ALARM1) | |
744 | (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8); |
745 | data->last_updated = jiffies; |
746 | data->valid = 1; |
747 | } |
748 | |
749 | mutex_unlock(&data->update_lock); |
750 | |
751 | return data; |
752 | } |
753 | |
754 | static DEFINE_PCI_DEVICE_TABLE(sis5595_pci_ids) = { |
755 | { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, |
756 | { 0, } |
757 | }; |
758 | |
759 | MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); |
760 | |
761 | static int blacklist[] = { |
762 | PCI_DEVICE_ID_SI_540, |
763 | PCI_DEVICE_ID_SI_550, |
764 | PCI_DEVICE_ID_SI_630, |
765 | PCI_DEVICE_ID_SI_645, |
766 | PCI_DEVICE_ID_SI_730, |
767 | PCI_DEVICE_ID_SI_735, |
768 | PCI_DEVICE_ID_SI_5511, /* |
769 | * 5513 chip has the 0008 device but |
770 | * that ID shows up in other chips so we |
771 | * use the 5511 ID for recognition |
772 | */ |
773 | PCI_DEVICE_ID_SI_5597, |
774 | PCI_DEVICE_ID_SI_5598, |
775 | 0 }; |
776 | |
777 | static int sis5595_device_add(unsigned short address) |
778 | { |
779 | struct resource res = { |
780 | .start = address, |
781 | .end = address + SIS5595_EXTENT - 1, |
782 | .name = "sis5595", |
783 | .flags = IORESOURCE_IO, |
784 | }; |
785 | int err; |
786 | |
787 | err = acpi_check_resource_conflict(&res); |
788 | if (err) |
789 | goto exit; |
790 | |
791 | pdev = platform_device_alloc("sis5595", address); |
792 | if (!pdev) { |
793 | err = -ENOMEM; |
794 | pr_err("Device allocation failed\n"); |
795 | goto exit; |
796 | } |
797 | |
798 | err = platform_device_add_resources(pdev, &res, 1); |
799 | if (err) { |
800 | pr_err("Device resource addition failed (%d)\n", err); |
801 | goto exit_device_put; |
802 | } |
803 | |
804 | err = platform_device_add(pdev); |
805 | if (err) { |
806 | pr_err("Device addition failed (%d)\n", err); |
807 | goto exit_device_put; |
808 | } |
809 | |
810 | return 0; |
811 | |
812 | exit_device_put: |
813 | platform_device_put(pdev); |
814 | exit: |
815 | return err; |
816 | } |
817 | |
818 | static int sis5595_pci_probe(struct pci_dev *dev, |
819 | const struct pci_device_id *id) |
820 | { |
821 | u16 address; |
822 | u8 enable; |
823 | int *i; |
824 | |
825 | for (i = blacklist; *i != 0; i++) { |
826 | struct pci_dev *d; |
827 | d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); |
828 | if (d) { |
829 | dev_err(&d->dev, |
830 | "Looked for SIS5595 but found unsupported device %.4x\n", |
831 | *i); |
832 | pci_dev_put(d); |
833 | return -ENODEV; |
834 | } |
835 | } |
836 | |
837 | force_addr &= ~(SIS5595_EXTENT - 1); |
838 | if (force_addr) { |
839 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr); |
840 | pci_write_config_word(dev, SIS5595_BASE_REG, force_addr); |
841 | } |
842 | |
843 | if (PCIBIOS_SUCCESSFUL != |
844 | pci_read_config_word(dev, SIS5595_BASE_REG, &address)) { |
845 | dev_err(&dev->dev, "Failed to read ISA address\n"); |
846 | return -ENODEV; |
847 | } |
848 | |
849 | address &= ~(SIS5595_EXTENT - 1); |
850 | if (!address) { |
851 | dev_err(&dev->dev, |
852 | "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
853 | return -ENODEV; |
854 | } |
855 | if (force_addr && address != force_addr) { |
856 | /* doesn't work for some chips? */ |
857 | dev_err(&dev->dev, "Failed to force ISA address\n"); |
858 | return -ENODEV; |
859 | } |
860 | |
861 | if (PCIBIOS_SUCCESSFUL != |
862 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) { |
863 | dev_err(&dev->dev, "Failed to read enable register\n"); |
864 | return -ENODEV; |
865 | } |
866 | if (!(enable & 0x80)) { |
867 | if ((PCIBIOS_SUCCESSFUL != |
868 | pci_write_config_byte(dev, SIS5595_ENABLE_REG, |
869 | enable | 0x80)) |
870 | || (PCIBIOS_SUCCESSFUL != |
871 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) |
872 | || (!(enable & 0x80))) { |
873 | /* doesn't work for some chips! */ |
874 | dev_err(&dev->dev, "Failed to enable HWM device\n"); |
875 | return -ENODEV; |
876 | } |
877 | } |
878 | |
879 | if (platform_driver_register(&sis5595_driver)) { |
880 | dev_dbg(&dev->dev, "Failed to register sis5595 driver\n"); |
881 | goto exit; |
882 | } |
883 | |
884 | s_bridge = pci_dev_get(dev); |
885 | /* Sets global pdev as a side effect */ |
886 | if (sis5595_device_add(address)) |
887 | goto exit_unregister; |
888 | |
889 | /* |
890 | * Always return failure here. This is to allow other drivers to bind |
891 | * to this pci device. We don't really want to have control over the |
892 | * pci device, we only wanted to read as few register values from it. |
893 | */ |
894 | return -ENODEV; |
895 | |
896 | exit_unregister: |
897 | pci_dev_put(dev); |
898 | platform_driver_unregister(&sis5595_driver); |
899 | exit: |
900 | return -ENODEV; |
901 | } |
902 | |
903 | static struct pci_driver sis5595_pci_driver = { |
904 | .name = "sis5595", |
905 | .id_table = sis5595_pci_ids, |
906 | .probe = sis5595_pci_probe, |
907 | }; |
908 | |
909 | static int __init sm_sis5595_init(void) |
910 | { |
911 | return pci_register_driver(&sis5595_pci_driver); |
912 | } |
913 | |
914 | static void __exit sm_sis5595_exit(void) |
915 | { |
916 | pci_unregister_driver(&sis5595_pci_driver); |
917 | if (s_bridge != NULL) { |
918 | platform_device_unregister(pdev); |
919 | platform_driver_unregister(&sis5595_driver); |
920 | pci_dev_put(s_bridge); |
921 | s_bridge = NULL; |
922 | } |
923 | } |
924 | |
925 | MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); |
926 | MODULE_DESCRIPTION("SiS 5595 Sensor device"); |
927 | MODULE_LICENSE("GPL"); |
928 | |
929 | module_init(sm_sis5595_init); |
930 | module_exit(sm_sis5595_exit); |
931 |
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