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x86: fix bootup crash in native_read_tsc()
[wrt350n-kernel.git] / drivers / hwmon / f71882fg.c
blob6db74434a02e98ecb00d1067c2236b23863ad9f5
1 /***************************************************************************
2 * Copyright (C) 2006 by Hans Edgington <hans@edgington.nl> *
3 * Copyright (C) 2007 by Hans de Goede <j.w.r.degoede@hhs.nl> *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/slab.h>
24 #include <linux/jiffies.h>
25 #include <linux/platform_device.h>
26 #include <linux/hwmon.h>
27 #include <linux/hwmon-sysfs.h>
28 #include <linux/err.h>
29 #include <linux/mutex.h>
30 #include <asm/io.h>
31
32 #define DRVNAME "f71882fg"
33
34 #define SIO_F71882FG_LD_HWM 0x04 /* Hardware monitor logical device*/
35 #define SIO_UNLOCK_KEY 0x87 /* Key to enable Super-I/O */
36 #define SIO_LOCK_KEY 0xAA /* Key to diasble Super-I/O */
37
38 #define SIO_REG_LDSEL 0x07 /* Logical device select */
39 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
40 #define SIO_REG_DEVREV 0x22 /* Device revision */
41 #define SIO_REG_MANID 0x23 /* Fintek ID (2 bytes) */
42 #define SIO_REG_ENABLE 0x30 /* Logical device enable */
43 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
44
45 #define SIO_FINTEK_ID 0x1934 /* Manufacturers ID */
46 #define SIO_F71882_ID 0x0541 /* Chipset ID */
47
48 #define REGION_LENGTH 8
49 #define ADDR_REG_OFFSET 5
50 #define DATA_REG_OFFSET 6
51
52 #define F71882FG_REG_PECI 0x0A
53
54 #define F71882FG_REG_IN_STATUS 0x12
55 #define F71882FG_REG_IN_BEEP 0x13
56 #define F71882FG_REG_IN(nr) (0x20 + (nr))
57 #define F71882FG_REG_IN1_HIGH 0x32
58
59 #define F71882FG_REG_FAN(nr) (0xA0 + (16 * (nr)))
60 #define F71882FG_REG_FAN_STATUS 0x92
61 #define F71882FG_REG_FAN_BEEP 0x93
62
63 #define F71882FG_REG_TEMP(nr) (0x72 + 2 * (nr))
64 #define F71882FG_REG_TEMP_OVT(nr) (0x82 + 2 * (nr))
65 #define F71882FG_REG_TEMP_HIGH(nr) (0x83 + 2 * (nr))
66 #define F71882FG_REG_TEMP_STATUS 0x62
67 #define F71882FG_REG_TEMP_BEEP 0x63
68 #define F71882FG_REG_TEMP_HYST1 0x6C
69 #define F71882FG_REG_TEMP_HYST23 0x6D
70 #define F71882FG_REG_TEMP_TYPE 0x6B
71 #define F71882FG_REG_TEMP_DIODE_OPEN 0x6F
72
73 #define F71882FG_REG_START 0x01
74
75 #define FAN_MIN_DETECT 366 /* Lowest detectable fanspeed */
76
77 static struct platform_device *f71882fg_pdev = NULL;
78
79 /* Super-I/O Function prototypes */
80 static inline int superio_inb(int base, int reg);
81 static inline int superio_inw(int base, int reg);
82 static inline void superio_enter(int base);
83 static inline void superio_select(int base, int ld);
84 static inline void superio_exit(int base);
85
86 static inline u16 fan_from_reg ( u16 reg );
87
88 struct f71882fg_data {
89 unsigned short addr;
90 struct device *hwmon_dev;
91
92 struct mutex update_lock;
93 char valid; /* !=0 if following fields are valid */
94 unsigned long last_updated; /* In jiffies */
95 unsigned long last_limits; /* In jiffies */
96
97 /* Register Values */
98 u8 in[9];
99 u8 in1_max;
100 u8 in_status;
101 u8 in_beep;
102 u16 fan[4];
103 u8 fan_status;
104 u8 fan_beep;
105 u8 temp[3];
106 u8 temp_ovt[3];
107 u8 temp_high[3];
108 u8 temp_hyst[3];
109 u8 temp_type[3];
110 u8 temp_status;
111 u8 temp_beep;
112 u8 temp_diode_open;
113 };
114
115 static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg);
116 static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg);
117 static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val);
118
119 /* Sysfs in*/
120 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
121 char *buf);
122 static ssize_t show_in_max(struct device *dev, struct device_attribute
123 *devattr, char *buf);
124 static ssize_t store_in_max(struct device *dev, struct device_attribute
125 *devattr, const char *buf, size_t count);
126 static ssize_t show_in_beep(struct device *dev, struct device_attribute
127 *devattr, char *buf);
128 static ssize_t store_in_beep(struct device *dev, struct device_attribute
129 *devattr, const char *buf, size_t count);
130 static ssize_t show_in_alarm(struct device *dev, struct device_attribute
131 *devattr, char *buf);
132 /* Sysfs Fan */
133 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
134 char *buf);
135 static ssize_t show_fan_beep(struct device *dev, struct device_attribute
136 *devattr, char *buf);
137 static ssize_t store_fan_beep(struct device *dev, struct device_attribute
138 *devattr, const char *buf, size_t count);
139 static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
140 *devattr, char *buf);
141 /* Sysfs Temp */
142 static ssize_t show_temp(struct device *dev, struct device_attribute
143 *devattr, char *buf);
144 static ssize_t show_temp_max(struct device *dev, struct device_attribute
145 *devattr, char *buf);
146 static ssize_t store_temp_max(struct device *dev, struct device_attribute
147 *devattr, const char *buf, size_t count);
148 static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
149 *devattr, char *buf);
150 static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
151 *devattr, const char *buf, size_t count);
152 static ssize_t show_temp_crit(struct device *dev, struct device_attribute
153 *devattr, char *buf);
154 static ssize_t store_temp_crit(struct device *dev, struct device_attribute
155 *devattr, const char *buf, size_t count);
156 static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
157 *devattr, char *buf);
158 static ssize_t show_temp_type(struct device *dev, struct device_attribute
159 *devattr, char *buf);
160 static ssize_t show_temp_beep(struct device *dev, struct device_attribute
161 *devattr, char *buf);
162 static ssize_t store_temp_beep(struct device *dev, struct device_attribute
163 *devattr, const char *buf, size_t count);
164 static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
165 *devattr, char *buf);
166 static ssize_t show_temp_fault(struct device *dev, struct device_attribute
167 *devattr, char *buf);
168 /* Sysfs misc */
169 static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
170 char *buf);
171
172 static int __devinit f71882fg_probe(struct platform_device * pdev);
173 static int __devexit f71882fg_remove(struct platform_device *pdev);
174 static int __init f71882fg_init(void);
175 static int __init f71882fg_find(int sioaddr, unsigned short *address);
176 static int __init f71882fg_device_add(unsigned short address);
177 static void __exit f71882fg_exit(void);
178
179 static struct platform_driver f71882fg_driver = {
180 .driver = {
181 .owner = THIS_MODULE,
182 .name = DRVNAME,
183 },
184 .probe = f71882fg_probe,
185 .remove = __devexit_p(f71882fg_remove),
186 };
187
188 static struct device_attribute f71882fg_dev_attr[] =
189 {
190 __ATTR( name, S_IRUGO, show_name, NULL ),
191 };
192
193 static struct sensor_device_attribute f71882fg_in_temp_attr[] =
194 {
195 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
196 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
197 SENSOR_ATTR(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max, 1),
198 SENSOR_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep, 1),
199 SENSOR_ATTR(in1_alarm, S_IRUGO, show_in_alarm, NULL, 1),
200 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
201 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
202 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
203 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
204 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
205 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
206 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
207 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
208 SENSOR_ATTR(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
209 store_temp_max, 0),
210 SENSOR_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
211 store_temp_max_hyst, 0),
212 SENSOR_ATTR(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
213 store_temp_crit, 0),
214 SENSOR_ATTR(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 0),
215 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
216 SENSOR_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_temp_beep,
217 store_temp_beep, 0),
218 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0),
219 SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
220 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
221 SENSOR_ATTR(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
222 store_temp_max, 1),
223 SENSOR_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
224 store_temp_max_hyst, 1),
225 SENSOR_ATTR(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
226 store_temp_crit, 1),
227 SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1),
228 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
229 SENSOR_ATTR(temp2_beep, S_IRUGO|S_IWUSR, show_temp_beep,
230 store_temp_beep, 1),
231 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 1),
232 SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
233 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
234 SENSOR_ATTR(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
235 store_temp_max, 2),
236 SENSOR_ATTR(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
237 store_temp_max_hyst, 2),
238 SENSOR_ATTR(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
239 store_temp_crit, 2),
240 SENSOR_ATTR(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 2),
241 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
242 SENSOR_ATTR(temp3_beep, S_IRUGO|S_IWUSR, show_temp_beep,
243 store_temp_beep, 2),
244 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 2),
245 SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2)
246 };
247
248 static struct sensor_device_attribute f71882fg_fan_attr[] =
249 {
250 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
251 SENSOR_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_fan_beep,
252 store_fan_beep, 0),
253 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0),
254 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
255 SENSOR_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_fan_beep,
256 store_fan_beep, 1),
257 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1),
258 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
259 SENSOR_ATTR(fan3_beep, S_IRUGO|S_IWUSR, show_fan_beep,
260 store_fan_beep, 2),
261 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2),
262 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
263 SENSOR_ATTR(fan4_beep, S_IRUGO|S_IWUSR, show_fan_beep,
264 store_fan_beep, 3),
265 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3)
266 };
267
268
269 /* Super I/O functions */
270 static inline int superio_inb(int base, int reg)
271 {
272 outb(reg, base);
273 return inb(base + 1);
274 }
275
276 static int superio_inw(int base, int reg)
277 {
278 int val;
279 outb(reg++, base);
280 val = inb(base + 1) << 8;
281 outb(reg, base);
282 val |= inb(base + 1);
283 return val;
284 }
285
286 static inline void superio_enter(int base)
287 {
288 /* according to the datasheet the key must be send twice! */
289 outb( SIO_UNLOCK_KEY, base);
290 outb( SIO_UNLOCK_KEY, base);
291 }
292
293 static inline void superio_select( int base, int ld)
294 {
295 outb(SIO_REG_LDSEL, base);
296 outb(ld, base + 1);
297 }
298
299 static inline void superio_exit(int base)
300 {
301 outb(SIO_LOCK_KEY, base);
302 }
303
304 static inline u16 fan_from_reg(u16 reg)
305 {
306 return reg ? (1500000 / reg) : 0;
307 }
308
309 static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg)
310 {
311 u8 val;
312
313 outb(reg, data->addr + ADDR_REG_OFFSET);
314 val = inb(data->addr + DATA_REG_OFFSET);
315
316 return val;
317 }
318
319 static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg)
320 {
321 u16 val;
322
323 outb(reg++, data->addr + ADDR_REG_OFFSET);
324 val = inb(data->addr + DATA_REG_OFFSET) << 8;
325 outb(reg, data->addr + ADDR_REG_OFFSET);
326 val |= inb(data->addr + DATA_REG_OFFSET);
327
328 return val;
329 }
330
331 static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val)
332 {
333 outb(reg, data->addr + ADDR_REG_OFFSET);
334 outb(val, data->addr + DATA_REG_OFFSET);
335 }
336
337 static struct f71882fg_data *f71882fg_update_device(struct device * dev)
338 {
339 struct f71882fg_data *data = dev_get_drvdata(dev);
340 int nr, reg, reg2;
341
342 mutex_lock(&data->update_lock);
343
344 /* Update once every 60 seconds */
345 if ( time_after(jiffies, data->last_limits + 60 * HZ ) ||
346 !data->valid) {
347 data->in1_max = f71882fg_read8(data, F71882FG_REG_IN1_HIGH);
348 data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP);
349
350 /* Get High & boundary temps*/
351 for (nr = 0; nr < 3; nr++) {
352 data->temp_ovt[nr] = f71882fg_read8(data,
353 F71882FG_REG_TEMP_OVT(nr));
354 data->temp_high[nr] = f71882fg_read8(data,
355 F71882FG_REG_TEMP_HIGH(nr));
356 }
357
358 /* Have to hardcode hyst*/
359 data->temp_hyst[0] = f71882fg_read8(data,
360 F71882FG_REG_TEMP_HYST1) >> 4;
361 /* Hyst temps 2 & 3 stored in same register */
362 reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
363 data->temp_hyst[1] = reg & 0x0F;
364 data->temp_hyst[2] = reg >> 4;
365
366 /* Have to hardcode type, because temp1 is special */
367 reg = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
368 reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
369 if ((reg2 & 0x03) == 0x01)
370 data->temp_type[0] = 6 /* PECI */;
371 else if ((reg2 & 0x03) == 0x02)
372 data->temp_type[0] = 5 /* AMDSI */;
373 else
374 data->temp_type[0] = (reg & 0x02) ? 2 : 4;
375
376 data->temp_type[1] = (reg & 0x04) ? 2 : 4;
377 data->temp_type[2] = (reg & 0x08) ? 2 : 4;
378
379 data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP);
380
381 data->fan_beep = f71882fg_read8(data, F71882FG_REG_FAN_BEEP);
382
383 data->last_limits = jiffies;
384 }
385
386 /* Update every second */
387 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
388 data->temp_status = f71882fg_read8(data,
389 F71882FG_REG_TEMP_STATUS);
390 data->temp_diode_open = f71882fg_read8(data,
391 F71882FG_REG_TEMP_DIODE_OPEN);
392 for (nr = 0; nr < 3; nr++)
393 data->temp[nr] = f71882fg_read8(data,
394 F71882FG_REG_TEMP(nr));
395
396 data->fan_status = f71882fg_read8(data,
397 F71882FG_REG_FAN_STATUS);
398 for (nr = 0; nr < 4; nr++)
399 data->fan[nr] = f71882fg_read16(data,
400 F71882FG_REG_FAN(nr));
401
402 data->in_status = f71882fg_read8(data,
403 F71882FG_REG_IN_STATUS);
404 for (nr = 0; nr < 9; nr++)
405 data->in[nr] = f71882fg_read8(data,
406 F71882FG_REG_IN(nr));
407
408 data->last_updated = jiffies;
409 data->valid = 1;
410 }
411
412 mutex_unlock(&data->update_lock);
413
414 return data;
415 }
416
417 /* Sysfs Interface */
418 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
419 char *buf)
420 {
421 struct f71882fg_data *data = f71882fg_update_device(dev);
422 int nr = to_sensor_dev_attr(devattr)->index;
423 int speed = fan_from_reg(data->fan[nr]);
424
425 if (speed == FAN_MIN_DETECT)
426 speed = 0;
427
428 return sprintf(buf, "%d\n", speed);
429 }
430
431 static ssize_t show_fan_beep(struct device *dev, struct device_attribute
432 *devattr, char *buf)
433 {
434 struct f71882fg_data *data = f71882fg_update_device(dev);
435 int nr = to_sensor_dev_attr(devattr)->index;
436
437 if (data->fan_beep & (1 << nr))
438 return sprintf(buf, "1\n");
439 else
440 return sprintf(buf, "0\n");
441 }
442
443 static ssize_t store_fan_beep(struct device *dev, struct device_attribute
444 *devattr, const char *buf, size_t count)
445 {
446 struct f71882fg_data *data = dev_get_drvdata(dev);
447 int nr = to_sensor_dev_attr(devattr)->index;
448 int val = simple_strtoul(buf, NULL, 10);
449
450 mutex_lock(&data->update_lock);
451 if (val)
452 data->fan_beep |= 1 << nr;
453 else
454 data->fan_beep &= ~(1 << nr);
455
456 f71882fg_write8(data, F71882FG_REG_FAN_BEEP, data->fan_beep);
457 mutex_unlock(&data->update_lock);
458
459 return count;
460 }
461
462 static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
463 *devattr, char *buf)
464 {
465 struct f71882fg_data *data = f71882fg_update_device(dev);
466 int nr = to_sensor_dev_attr(devattr)->index;
467
468 if (data->fan_status & (1 << nr))
469 return sprintf(buf, "1\n");
470 else
471 return sprintf(buf, "0\n");
472 }
473
474 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
475 char *buf)
476 {
477 struct f71882fg_data *data = f71882fg_update_device(dev);
478 int nr = to_sensor_dev_attr(devattr)->index;
479
480 return sprintf(buf, "%d\n", data->in[nr] * 8);
481 }
482
483 static ssize_t show_in_max(struct device *dev, struct device_attribute
484 *devattr, char *buf)
485 {
486 struct f71882fg_data *data = f71882fg_update_device(dev);
487
488 return sprintf(buf, "%d\n", data->in1_max * 8);
489 }
490
491 static ssize_t store_in_max(struct device *dev, struct device_attribute
492 *devattr, const char *buf, size_t count)
493 {
494 struct f71882fg_data *data = dev_get_drvdata(dev);
495 int val = simple_strtoul(buf, NULL, 10) / 8;
496
497 if (val > 255)
498 val = 255;
499
500 mutex_lock(&data->update_lock);
501 f71882fg_write8(data, F71882FG_REG_IN1_HIGH, val);
502 data->in1_max = val;
503 mutex_unlock(&data->update_lock);
504
505 return count;
506 }
507
508 static ssize_t show_in_beep(struct device *dev, struct device_attribute
509 *devattr, char *buf)
510 {
511 struct f71882fg_data *data = f71882fg_update_device(dev);
512 int nr = to_sensor_dev_attr(devattr)->index;
513
514 if (data->in_beep & (1 << nr))
515 return sprintf(buf, "1\n");
516 else
517 return sprintf(buf, "0\n");
518 }
519
520 static ssize_t store_in_beep(struct device *dev, struct device_attribute
521 *devattr, const char *buf, size_t count)
522 {
523 struct f71882fg_data *data = dev_get_drvdata(dev);
524 int nr = to_sensor_dev_attr(devattr)->index;
525 int val = simple_strtoul(buf, NULL, 10);
526
527 mutex_lock(&data->update_lock);
528 if (val)
529 data->in_beep |= 1 << nr;
530 else
531 data->in_beep &= ~(1 << nr);
532
533 f71882fg_write8(data, F71882FG_REG_IN_BEEP, data->in_beep);
534 mutex_unlock(&data->update_lock);
535
536 return count;
537 }
538
539 static ssize_t show_in_alarm(struct device *dev, struct device_attribute
540 *devattr, char *buf)
541 {
542 struct f71882fg_data *data = f71882fg_update_device(dev);
543 int nr = to_sensor_dev_attr(devattr)->index;
544
545 if (data->in_status & (1 << nr))
546 return sprintf(buf, "1\n");
547 else
548 return sprintf(buf, "0\n");
549 }
550
551 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
552 char *buf)
553 {
554 struct f71882fg_data *data = f71882fg_update_device(dev);
555 int nr = to_sensor_dev_attr(devattr)->index;
556
557 return sprintf(buf, "%d\n", data->temp[nr] * 1000);
558 }
559
560 static ssize_t show_temp_max(struct device *dev, struct device_attribute
561 *devattr, char *buf)
562 {
563 struct f71882fg_data *data = f71882fg_update_device(dev);
564 int nr = to_sensor_dev_attr(devattr)->index;
565
566 return sprintf(buf, "%d\n", data->temp_high[nr] * 1000);
567 }
568
569 static ssize_t store_temp_max(struct device *dev, struct device_attribute
570 *devattr, const char *buf, size_t count)
571 {
572 struct f71882fg_data *data = dev_get_drvdata(dev);
573 int nr = to_sensor_dev_attr(devattr)->index;
574 int val = simple_strtoul(buf, NULL, 10) / 1000;
575
576 if (val > 255)
577 val = 255;
578
579 mutex_lock(&data->update_lock);
580 f71882fg_write8(data, F71882FG_REG_TEMP_HIGH(nr), val);
581 data->temp_high[nr] = val;
582 mutex_unlock(&data->update_lock);
583
584 return count;
585 }
586
587 static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
588 *devattr, char *buf)
589 {
590 struct f71882fg_data *data = f71882fg_update_device(dev);
591 int nr = to_sensor_dev_attr(devattr)->index;
592
593 return sprintf(buf, "%d\n",
594 (data->temp_high[nr] - data->temp_hyst[nr]) * 1000);
595 }
596
597 static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
598 *devattr, const char *buf, size_t count)
599 {
600 struct f71882fg_data *data = dev_get_drvdata(dev);
601 int nr = to_sensor_dev_attr(devattr)->index;
602 int val = simple_strtoul(buf, NULL, 10) / 1000;
603 ssize_t ret = count;
604
605 mutex_lock(&data->update_lock);
606
607 /* convert abs to relative and check */
608 val = data->temp_high[nr] - val;
609 if (val < 0 || val > 15) {
610 ret = -EINVAL;
611 goto store_temp_max_hyst_exit;
612 }
613
614 data->temp_hyst[nr] = val;
615
616 /* convert value to register contents */
617 switch (nr) {
618 case 0:
619 val = val << 4;
620 break;
621 case 1:
622 val = val | (data->temp_hyst[2] << 4);
623 break;
624 case 2:
625 val = data->temp_hyst[1] | (val << 4);
626 break;
627 }
628
629 f71882fg_write8(data, nr ? F71882FG_REG_TEMP_HYST23 :
630 F71882FG_REG_TEMP_HYST1, val);
631
632 store_temp_max_hyst_exit:
633 mutex_unlock(&data->update_lock);
634 return ret;
635 }
636
637 static ssize_t show_temp_crit(struct device *dev, struct device_attribute
638 *devattr, char *buf)
639 {
640 struct f71882fg_data *data = f71882fg_update_device(dev);
641 int nr = to_sensor_dev_attr(devattr)->index;
642
643 return sprintf(buf, "%d\n", data->temp_ovt[nr] * 1000);
644 }
645
646 static ssize_t store_temp_crit(struct device *dev, struct device_attribute
647 *devattr, const char *buf, size_t count)
648 {
649 struct f71882fg_data *data = dev_get_drvdata(dev);
650 int nr = to_sensor_dev_attr(devattr)->index;
651 int val = simple_strtoul(buf, NULL, 10) / 1000;
652
653 if (val > 255)
654 val = 255;
655
656 mutex_lock(&data->update_lock);
657 f71882fg_write8(data, F71882FG_REG_TEMP_OVT(nr), val);
658 data->temp_ovt[nr] = val;
659 mutex_unlock(&data->update_lock);
660
661 return count;
662 }
663
664 static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
665 *devattr, char *buf)
666 {
667 struct f71882fg_data *data = f71882fg_update_device(dev);
668 int nr = to_sensor_dev_attr(devattr)->index;
669
670 return sprintf(buf, "%d\n",
671 (data->temp_ovt[nr] - data->temp_hyst[nr]) * 1000);
672 }
673
674 static ssize_t show_temp_type(struct device *dev, struct device_attribute
675 *devattr, char *buf)
676 {
677 struct f71882fg_data *data = f71882fg_update_device(dev);
678 int nr = to_sensor_dev_attr(devattr)->index;
679
680 return sprintf(buf, "%d\n", data->temp_type[nr]);
681 }
682
683 static ssize_t show_temp_beep(struct device *dev, struct device_attribute
684 *devattr, char *buf)
685 {
686 struct f71882fg_data *data = f71882fg_update_device(dev);
687 int nr = to_sensor_dev_attr(devattr)->index;
688
689 if (data->temp_beep & (1 << (nr + 1)))
690 return sprintf(buf, "1\n");
691 else
692 return sprintf(buf, "0\n");
693 }
694
695 static ssize_t store_temp_beep(struct device *dev, struct device_attribute
696 *devattr, const char *buf, size_t count)
697 {
698 struct f71882fg_data *data = dev_get_drvdata(dev);
699 int nr = to_sensor_dev_attr(devattr)->index;
700 int val = simple_strtoul(buf, NULL, 10);
701
702 mutex_lock(&data->update_lock);
703 if (val)
704 data->temp_beep |= 1 << (nr + 1);
705 else
706 data->temp_beep &= ~(1 << (nr + 1));
707
708 f71882fg_write8(data, F71882FG_REG_TEMP_BEEP, data->temp_beep);
709 mutex_unlock(&data->update_lock);
710
711 return count;
712 }
713
714 static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
715 *devattr, char *buf)
716 {
717 struct f71882fg_data *data = f71882fg_update_device(dev);
718 int nr = to_sensor_dev_attr(devattr)->index;
719
720 if (data->temp_status & (1 << (nr + 1)))
721 return sprintf(buf, "1\n");
722 else
723 return sprintf(buf, "0\n");
724 }
725
726 static ssize_t show_temp_fault(struct device *dev, struct device_attribute
727 *devattr, char *buf)
728 {
729 struct f71882fg_data *data = f71882fg_update_device(dev);
730 int nr = to_sensor_dev_attr(devattr)->index;
731
732 if (data->temp_diode_open & (1 << (nr + 1)))
733 return sprintf(buf, "1\n");
734 else
735 return sprintf(buf, "0\n");
736 }
737
738 static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
739 char *buf)
740 {
741 return sprintf(buf, DRVNAME "\n");
742 }
743
744
745 static int __devinit f71882fg_probe(struct platform_device * pdev)
746 {
747 struct f71882fg_data *data;
748 int err, i;
749 u8 start_reg;
750
751 if (!(data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL)))
752 return -ENOMEM;
753
754 data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
755 mutex_init(&data->update_lock);
756 platform_set_drvdata(pdev, data);
757
758 /* Register sysfs interface files */
759 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++) {
760 err = device_create_file(&pdev->dev, &f71882fg_dev_attr[i]);
761 if (err)
762 goto exit_unregister_sysfs;
763 }
764
765 start_reg = f71882fg_read8(data, F71882FG_REG_START);
766 if (start_reg & 0x01) {
767 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++) {
768 err = device_create_file(&pdev->dev,
769 &f71882fg_in_temp_attr[i].dev_attr);
770 if (err)
771 goto exit_unregister_sysfs;
772 }
773 }
774
775 if (start_reg & 0x02) {
776 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++) {
777 err = device_create_file(&pdev->dev,
778 &f71882fg_fan_attr[i].dev_attr);
779 if (err)
780 goto exit_unregister_sysfs;
781 }
782 }
783
784 data->hwmon_dev = hwmon_device_register(&pdev->dev);
785 if (IS_ERR(data->hwmon_dev)) {
786 err = PTR_ERR(data->hwmon_dev);
787 goto exit_unregister_sysfs;
788 }
789
790 return 0;
791
792 exit_unregister_sysfs:
793 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
794 device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
795
796 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
797 device_remove_file(&pdev->dev,
798 &f71882fg_in_temp_attr[i].dev_attr);
799
800 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
801 device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
802
803 kfree(data);
804
805 return err;
806 }
807
808 static int __devexit f71882fg_remove(struct platform_device *pdev)
809 {
810 int i;
811 struct f71882fg_data *data = platform_get_drvdata(pdev);
812
813 platform_set_drvdata(pdev, NULL);
814 hwmon_device_unregister(data->hwmon_dev);
815
816 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
817 device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
818
819 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
820 device_remove_file(&pdev->dev,
821 &f71882fg_in_temp_attr[i].dev_attr);
822
823 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
824 device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
825
826 kfree(data);
827
828 return 0;
829 }
830
831 static int __init f71882fg_find(int sioaddr, unsigned short *address)
832 {
833 int err = -ENODEV;
834 u16 devid;
835 u8 start_reg;
836 struct f71882fg_data data;
837
838 superio_enter(sioaddr);
839
840 devid = superio_inw(sioaddr, SIO_REG_MANID);
841 if (devid != SIO_FINTEK_ID) {
842 printk(KERN_INFO DRVNAME ": Not a Fintek device\n");
843 goto exit;
844 }
845
846 devid = superio_inw(sioaddr, SIO_REG_DEVID);
847 if (devid != SIO_F71882_ID) {
848 printk(KERN_INFO DRVNAME ": Unsupported Fintek device\n");
849 goto exit;
850 }
851
852 superio_select(sioaddr, SIO_F71882FG_LD_HWM);
853 if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
854 printk(KERN_WARNING DRVNAME ": Device not activated\n");
855 goto exit;
856 }
857
858 *address = superio_inw(sioaddr, SIO_REG_ADDR);
859 if (*address == 0)
860 {
861 printk(KERN_WARNING DRVNAME ": Base address not set\n");
862 goto exit;
863 }
864 *address &= ~(REGION_LENGTH - 1); /* Ignore 3 LSB */
865
866 data.addr = *address;
867 start_reg = f71882fg_read8(&data, F71882FG_REG_START);
868 if (!(start_reg & 0x03)) {
869 printk(KERN_WARNING DRVNAME
870 ": Hardware monitoring not activated\n");
871 goto exit;
872 }
873
874 err = 0;
875 printk(KERN_INFO DRVNAME ": Found F71882FG chip at %#x, revision %d\n",
876 (unsigned int)*address,
877 (int)superio_inb(sioaddr, SIO_REG_DEVREV));
878 exit:
879 superio_exit(sioaddr);
880 return err;
881 }
882
883 static int __init f71882fg_device_add(unsigned short address)
884 {
885 struct resource res = {
886 .start = address,
887 .end = address + REGION_LENGTH - 1,
888 .flags = IORESOURCE_IO,
889 };
890 int err;
891
892 f71882fg_pdev = platform_device_alloc(DRVNAME, address);
893 if (!f71882fg_pdev)
894 return -ENOMEM;
895
896 res.name = f71882fg_pdev->name;
897 err = platform_device_add_resources(f71882fg_pdev, &res, 1);
898 if (err) {
899 printk(KERN_ERR DRVNAME ": Device resource addition failed\n");
900 goto exit_device_put;
901 }
902
903 err = platform_device_add(f71882fg_pdev);
904 if (err) {
905 printk(KERN_ERR DRVNAME ": Device addition failed\n");
906 goto exit_device_put;
907 }
908
909 return 0;
910
911 exit_device_put:
912 platform_device_put(f71882fg_pdev);
913
914 return err;
915 }
916
917 static int __init f71882fg_init(void)
918 {
919 int err = -ENODEV;
920 unsigned short address;
921
922 if (f71882fg_find(0x2e, &address) && f71882fg_find(0x4e, &address))
923 goto exit;
924
925 if ((err = platform_driver_register(&f71882fg_driver)))
926 goto exit;
927
928 if ((err = f71882fg_device_add(address)))
929 goto exit_driver;
930
931 return 0;
932
933 exit_driver:
934 platform_driver_unregister(&f71882fg_driver);
935 exit:
936 return err;
937 }
938
939 static void __exit f71882fg_exit(void)
940 {
941 platform_device_unregister(f71882fg_pdev);
942 platform_driver_unregister(&f71882fg_driver);
943 }
944
945 MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver");
946 MODULE_AUTHOR("Hans Edgington (hans@edgington.nl)");
947 MODULE_LICENSE("GPL");
948
949 module_init(f71882fg_init);
950 module_exit(f71882fg_exit);
WRT350N Kernel Patches