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net: Fix recursive descent in __scm_destroy().
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / hwmon / f71882fg.c
blob67067e9a323edba1aecf50bf40c089fc56857436
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 unsigned short force_id;
78 module_param(force_id, ushort, 0);
79 MODULE_PARM_DESC(force_id, "Override the detected device ID");
80
81 static struct platform_device *f71882fg_pdev = NULL;
82
83 /* Super-I/O Function prototypes */
84 static inline int superio_inb(int base, int reg);
85 static inline int superio_inw(int base, int reg);
86 static inline void superio_enter(int base);
87 static inline void superio_select(int base, int ld);
88 static inline void superio_exit(int base);
89
90 struct f71882fg_data {
91 unsigned short addr;
92 struct device *hwmon_dev;
93
94 struct mutex update_lock;
95 char valid; /* !=0 if following fields are valid */
96 unsigned long last_updated; /* In jiffies */
97 unsigned long last_limits; /* In jiffies */
98
99 /* Register Values */
100 u8 in[9];
101 u8 in1_max;
102 u8 in_status;
103 u8 in_beep;
104 u16 fan[4];
105 u8 fan_status;
106 u8 fan_beep;
107 u8 temp[3];
108 u8 temp_ovt[3];
109 u8 temp_high[3];
110 u8 temp_hyst[3];
111 u8 temp_type[3];
112 u8 temp_status;
113 u8 temp_beep;
114 u8 temp_diode_open;
115 };
116
117 /* Sysfs in*/
118 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
119 char *buf);
120 static ssize_t show_in_max(struct device *dev, struct device_attribute
121 *devattr, char *buf);
122 static ssize_t store_in_max(struct device *dev, struct device_attribute
123 *devattr, const char *buf, size_t count);
124 static ssize_t show_in_beep(struct device *dev, struct device_attribute
125 *devattr, char *buf);
126 static ssize_t store_in_beep(struct device *dev, struct device_attribute
127 *devattr, const char *buf, size_t count);
128 static ssize_t show_in_alarm(struct device *dev, struct device_attribute
129 *devattr, char *buf);
130 /* Sysfs Fan */
131 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
132 char *buf);
133 static ssize_t show_fan_beep(struct device *dev, struct device_attribute
134 *devattr, char *buf);
135 static ssize_t store_fan_beep(struct device *dev, struct device_attribute
136 *devattr, const char *buf, size_t count);
137 static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
138 *devattr, char *buf);
139 /* Sysfs Temp */
140 static ssize_t show_temp(struct device *dev, struct device_attribute
141 *devattr, char *buf);
142 static ssize_t show_temp_max(struct device *dev, struct device_attribute
143 *devattr, char *buf);
144 static ssize_t store_temp_max(struct device *dev, struct device_attribute
145 *devattr, const char *buf, size_t count);
146 static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
147 *devattr, char *buf);
148 static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
149 *devattr, const char *buf, size_t count);
150 static ssize_t show_temp_crit(struct device *dev, struct device_attribute
151 *devattr, char *buf);
152 static ssize_t store_temp_crit(struct device *dev, struct device_attribute
153 *devattr, const char *buf, size_t count);
154 static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
155 *devattr, char *buf);
156 static ssize_t show_temp_type(struct device *dev, struct device_attribute
157 *devattr, char *buf);
158 static ssize_t show_temp_beep(struct device *dev, struct device_attribute
159 *devattr, char *buf);
160 static ssize_t store_temp_beep(struct device *dev, struct device_attribute
161 *devattr, const char *buf, size_t count);
162 static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
163 *devattr, char *buf);
164 static ssize_t show_temp_fault(struct device *dev, struct device_attribute
165 *devattr, char *buf);
166 /* Sysfs misc */
167 static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
168 char *buf);
169
170 static int __devinit f71882fg_probe(struct platform_device * pdev);
171 static int __devexit f71882fg_remove(struct platform_device *pdev);
172 static int __init f71882fg_init(void);
173 static int __init f71882fg_find(int sioaddr, unsigned short *address);
174 static int __init f71882fg_device_add(unsigned short address);
175 static void __exit f71882fg_exit(void);
176
177 static struct platform_driver f71882fg_driver = {
178 .driver = {
179 .owner = THIS_MODULE,
180 .name = DRVNAME,
181 },
182 .probe = f71882fg_probe,
183 .remove = __devexit_p(f71882fg_remove),
184 };
185
186 static struct device_attribute f71882fg_dev_attr[] =
187 {
188 __ATTR( name, S_IRUGO, show_name, NULL ),
189 };
190
191 static struct sensor_device_attribute f71882fg_in_temp_attr[] =
192 {
193 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
194 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
195 SENSOR_ATTR(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max, 1),
196 SENSOR_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep, 1),
197 SENSOR_ATTR(in1_alarm, S_IRUGO, show_in_alarm, NULL, 1),
198 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
199 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
200 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
201 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
202 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
203 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
204 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
205 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
206 SENSOR_ATTR(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
207 store_temp_max, 0),
208 SENSOR_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
209 store_temp_max_hyst, 0),
210 SENSOR_ATTR(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
211 store_temp_crit, 0),
212 SENSOR_ATTR(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 0),
213 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
214 SENSOR_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_temp_beep,
215 store_temp_beep, 0),
216 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0),
217 SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
218 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
219 SENSOR_ATTR(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
220 store_temp_max, 1),
221 SENSOR_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
222 store_temp_max_hyst, 1),
223 SENSOR_ATTR(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
224 store_temp_crit, 1),
225 SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1),
226 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
227 SENSOR_ATTR(temp2_beep, S_IRUGO|S_IWUSR, show_temp_beep,
228 store_temp_beep, 1),
229 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 1),
230 SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
231 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
232 SENSOR_ATTR(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
233 store_temp_max, 2),
234 SENSOR_ATTR(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
235 store_temp_max_hyst, 2),
236 SENSOR_ATTR(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
237 store_temp_crit, 2),
238 SENSOR_ATTR(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 2),
239 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
240 SENSOR_ATTR(temp3_beep, S_IRUGO|S_IWUSR, show_temp_beep,
241 store_temp_beep, 2),
242 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 2),
243 SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2)
244 };
245
246 static struct sensor_device_attribute f71882fg_fan_attr[] =
247 {
248 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
249 SENSOR_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_fan_beep,
250 store_fan_beep, 0),
251 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0),
252 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
253 SENSOR_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_fan_beep,
254 store_fan_beep, 1),
255 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1),
256 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
257 SENSOR_ATTR(fan3_beep, S_IRUGO|S_IWUSR, show_fan_beep,
258 store_fan_beep, 2),
259 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2),
260 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
261 SENSOR_ATTR(fan4_beep, S_IRUGO|S_IWUSR, show_fan_beep,
262 store_fan_beep, 3),
263 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3)
264 };
265
266
267 /* Super I/O functions */
268 static inline int superio_inb(int base, int reg)
269 {
270 outb(reg, base);
271 return inb(base + 1);
272 }
273
274 static int superio_inw(int base, int reg)
275 {
276 int val;
277 outb(reg++, base);
278 val = inb(base + 1) << 8;
279 outb(reg, base);
280 val |= inb(base + 1);
281 return val;
282 }
283
284 static inline void superio_enter(int base)
285 {
286 /* according to the datasheet the key must be send twice! */
287 outb( SIO_UNLOCK_KEY, base);
288 outb( SIO_UNLOCK_KEY, base);
289 }
290
291 static inline void superio_select( int base, int ld)
292 {
293 outb(SIO_REG_LDSEL, base);
294 outb(ld, base + 1);
295 }
296
297 static inline void superio_exit(int base)
298 {
299 outb(SIO_LOCK_KEY, base);
300 }
301
302 static inline u16 fan_from_reg(u16 reg)
303 {
304 return reg ? (1500000 / reg) : 0;
305 }
306
307 static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg)
308 {
309 u8 val;
310
311 outb(reg, data->addr + ADDR_REG_OFFSET);
312 val = inb(data->addr + DATA_REG_OFFSET);
313
314 return val;
315 }
316
317 static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg)
318 {
319 u16 val;
320
321 outb(reg++, data->addr + ADDR_REG_OFFSET);
322 val = inb(data->addr + DATA_REG_OFFSET) << 8;
323 outb(reg, data->addr + ADDR_REG_OFFSET);
324 val |= inb(data->addr + DATA_REG_OFFSET);
325
326 return val;
327 }
328
329 static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val)
330 {
331 outb(reg, data->addr + ADDR_REG_OFFSET);
332 outb(val, data->addr + DATA_REG_OFFSET);
333 }
334
335 static struct f71882fg_data *f71882fg_update_device(struct device * dev)
336 {
337 struct f71882fg_data *data = dev_get_drvdata(dev);
338 int nr, reg, reg2;
339
340 mutex_lock(&data->update_lock);
341
342 /* Update once every 60 seconds */
343 if ( time_after(jiffies, data->last_limits + 60 * HZ ) ||
344 !data->valid) {
345 data->in1_max = f71882fg_read8(data, F71882FG_REG_IN1_HIGH);
346 data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP);
347
348 /* Get High & boundary temps*/
349 for (nr = 0; nr < 3; nr++) {
350 data->temp_ovt[nr] = f71882fg_read8(data,
351 F71882FG_REG_TEMP_OVT(nr));
352 data->temp_high[nr] = f71882fg_read8(data,
353 F71882FG_REG_TEMP_HIGH(nr));
354 }
355
356 /* Have to hardcode hyst*/
357 data->temp_hyst[0] = f71882fg_read8(data,
358 F71882FG_REG_TEMP_HYST1) >> 4;
359 /* Hyst temps 2 & 3 stored in same register */
360 reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
361 data->temp_hyst[1] = reg & 0x0F;
362 data->temp_hyst[2] = reg >> 4;
363
364 /* Have to hardcode type, because temp1 is special */
365 reg = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
366 reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
367 if ((reg2 & 0x03) == 0x01)
368 data->temp_type[0] = 6 /* PECI */;
369 else if ((reg2 & 0x03) == 0x02)
370 data->temp_type[0] = 5 /* AMDSI */;
371 else
372 data->temp_type[0] = (reg & 0x02) ? 2 : 4;
373
374 data->temp_type[1] = (reg & 0x04) ? 2 : 4;
375 data->temp_type[2] = (reg & 0x08) ? 2 : 4;
376
377 data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP);
378
379 data->fan_beep = f71882fg_read8(data, F71882FG_REG_FAN_BEEP);
380
381 data->last_limits = jiffies;
382 }
383
384 /* Update every second */
385 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
386 data->temp_status = f71882fg_read8(data,
387 F71882FG_REG_TEMP_STATUS);
388 data->temp_diode_open = f71882fg_read8(data,
389 F71882FG_REG_TEMP_DIODE_OPEN);
390 for (nr = 0; nr < 3; nr++)
391 data->temp[nr] = f71882fg_read8(data,
392 F71882FG_REG_TEMP(nr));
393
394 data->fan_status = f71882fg_read8(data,
395 F71882FG_REG_FAN_STATUS);
396 for (nr = 0; nr < 4; nr++)
397 data->fan[nr] = f71882fg_read16(data,
398 F71882FG_REG_FAN(nr));
399
400 data->in_status = f71882fg_read8(data,
401 F71882FG_REG_IN_STATUS);
402 for (nr = 0; nr < 9; nr++)
403 data->in[nr] = f71882fg_read8(data,
404 F71882FG_REG_IN(nr));
405
406 data->last_updated = jiffies;
407 data->valid = 1;
408 }
409
410 mutex_unlock(&data->update_lock);
411
412 return data;
413 }
414
415 /* Sysfs Interface */
416 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
417 char *buf)
418 {
419 struct f71882fg_data *data = f71882fg_update_device(dev);
420 int nr = to_sensor_dev_attr(devattr)->index;
421 int speed = fan_from_reg(data->fan[nr]);
422
423 if (speed == FAN_MIN_DETECT)
424 speed = 0;
425
426 return sprintf(buf, "%d\n", speed);
427 }
428
429 static ssize_t show_fan_beep(struct device *dev, struct device_attribute
430 *devattr, char *buf)
431 {
432 struct f71882fg_data *data = f71882fg_update_device(dev);
433 int nr = to_sensor_dev_attr(devattr)->index;
434
435 if (data->fan_beep & (1 << nr))
436 return sprintf(buf, "1\n");
437 else
438 return sprintf(buf, "0\n");
439 }
440
441 static ssize_t store_fan_beep(struct device *dev, struct device_attribute
442 *devattr, const char *buf, size_t count)
443 {
444 struct f71882fg_data *data = dev_get_drvdata(dev);
445 int nr = to_sensor_dev_attr(devattr)->index;
446 int val = simple_strtoul(buf, NULL, 10);
447
448 mutex_lock(&data->update_lock);
449 if (val)
450 data->fan_beep |= 1 << nr;
451 else
452 data->fan_beep &= ~(1 << nr);
453
454 f71882fg_write8(data, F71882FG_REG_FAN_BEEP, data->fan_beep);
455 mutex_unlock(&data->update_lock);
456
457 return count;
458 }
459
460 static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
461 *devattr, char *buf)
462 {
463 struct f71882fg_data *data = f71882fg_update_device(dev);
464 int nr = to_sensor_dev_attr(devattr)->index;
465
466 if (data->fan_status & (1 << nr))
467 return sprintf(buf, "1\n");
468 else
469 return sprintf(buf, "0\n");
470 }
471
472 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
473 char *buf)
474 {
475 struct f71882fg_data *data = f71882fg_update_device(dev);
476 int nr = to_sensor_dev_attr(devattr)->index;
477
478 return sprintf(buf, "%d\n", data->in[nr] * 8);
479 }
480
481 static ssize_t show_in_max(struct device *dev, struct device_attribute
482 *devattr, char *buf)
483 {
484 struct f71882fg_data *data = f71882fg_update_device(dev);
485
486 return sprintf(buf, "%d\n", data->in1_max * 8);
487 }
488
489 static ssize_t store_in_max(struct device *dev, struct device_attribute
490 *devattr, const char *buf, size_t count)
491 {
492 struct f71882fg_data *data = dev_get_drvdata(dev);
493 int val = simple_strtoul(buf, NULL, 10) / 8;
494
495 if (val > 255)
496 val = 255;
497
498 mutex_lock(&data->update_lock);
499 f71882fg_write8(data, F71882FG_REG_IN1_HIGH, val);
500 data->in1_max = val;
501 mutex_unlock(&data->update_lock);
502
503 return count;
504 }
505
506 static ssize_t show_in_beep(struct device *dev, struct device_attribute
507 *devattr, char *buf)
508 {
509 struct f71882fg_data *data = f71882fg_update_device(dev);
510 int nr = to_sensor_dev_attr(devattr)->index;
511
512 if (data->in_beep & (1 << nr))
513 return sprintf(buf, "1\n");
514 else
515 return sprintf(buf, "0\n");
516 }
517
518 static ssize_t store_in_beep(struct device *dev, struct device_attribute
519 *devattr, const char *buf, size_t count)
520 {
521 struct f71882fg_data *data = dev_get_drvdata(dev);
522 int nr = to_sensor_dev_attr(devattr)->index;
523 int val = simple_strtoul(buf, NULL, 10);
524
525 mutex_lock(&data->update_lock);
526 if (val)
527 data->in_beep |= 1 << nr;
528 else
529 data->in_beep &= ~(1 << nr);
530
531 f71882fg_write8(data, F71882FG_REG_IN_BEEP, data->in_beep);
532 mutex_unlock(&data->update_lock);
533
534 return count;
535 }
536
537 static ssize_t show_in_alarm(struct device *dev, struct device_attribute
538 *devattr, char *buf)
539 {
540 struct f71882fg_data *data = f71882fg_update_device(dev);
541 int nr = to_sensor_dev_attr(devattr)->index;
542
543 if (data->in_status & (1 << nr))
544 return sprintf(buf, "1\n");
545 else
546 return sprintf(buf, "0\n");
547 }
548
549 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
550 char *buf)
551 {
552 struct f71882fg_data *data = f71882fg_update_device(dev);
553 int nr = to_sensor_dev_attr(devattr)->index;
554
555 return sprintf(buf, "%d\n", data->temp[nr] * 1000);
556 }
557
558 static ssize_t show_temp_max(struct device *dev, struct device_attribute
559 *devattr, char *buf)
560 {
561 struct f71882fg_data *data = f71882fg_update_device(dev);
562 int nr = to_sensor_dev_attr(devattr)->index;
563
564 return sprintf(buf, "%d\n", data->temp_high[nr] * 1000);
565 }
566
567 static ssize_t store_temp_max(struct device *dev, struct device_attribute
568 *devattr, const char *buf, size_t count)
569 {
570 struct f71882fg_data *data = dev_get_drvdata(dev);
571 int nr = to_sensor_dev_attr(devattr)->index;
572 int val = simple_strtoul(buf, NULL, 10) / 1000;
573
574 if (val > 255)
575 val = 255;
576
577 mutex_lock(&data->update_lock);
578 f71882fg_write8(data, F71882FG_REG_TEMP_HIGH(nr), val);
579 data->temp_high[nr] = val;
580 mutex_unlock(&data->update_lock);
581
582 return count;
583 }
584
585 static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
586 *devattr, char *buf)
587 {
588 struct f71882fg_data *data = f71882fg_update_device(dev);
589 int nr = to_sensor_dev_attr(devattr)->index;
590
591 return sprintf(buf, "%d\n",
592 (data->temp_high[nr] - data->temp_hyst[nr]) * 1000);
593 }
594
595 static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
596 *devattr, const char *buf, size_t count)
597 {
598 struct f71882fg_data *data = dev_get_drvdata(dev);
599 int nr = to_sensor_dev_attr(devattr)->index;
600 int val = simple_strtoul(buf, NULL, 10) / 1000;
601 ssize_t ret = count;
602
603 mutex_lock(&data->update_lock);
604
605 /* convert abs to relative and check */
606 val = data->temp_high[nr] - val;
607 if (val < 0 || val > 15) {
608 ret = -EINVAL;
609 goto store_temp_max_hyst_exit;
610 }
611
612 data->temp_hyst[nr] = val;
613
614 /* convert value to register contents */
615 switch (nr) {
616 case 0:
617 val = val << 4;
618 break;
619 case 1:
620 val = val | (data->temp_hyst[2] << 4);
621 break;
622 case 2:
623 val = data->temp_hyst[1] | (val << 4);
624 break;
625 }
626
627 f71882fg_write8(data, nr ? F71882FG_REG_TEMP_HYST23 :
628 F71882FG_REG_TEMP_HYST1, val);
629
630 store_temp_max_hyst_exit:
631 mutex_unlock(&data->update_lock);
632 return ret;
633 }
634
635 static ssize_t show_temp_crit(struct device *dev, struct device_attribute
636 *devattr, char *buf)
637 {
638 struct f71882fg_data *data = f71882fg_update_device(dev);
639 int nr = to_sensor_dev_attr(devattr)->index;
640
641 return sprintf(buf, "%d\n", data->temp_ovt[nr] * 1000);
642 }
643
644 static ssize_t store_temp_crit(struct device *dev, struct device_attribute
645 *devattr, const char *buf, size_t count)
646 {
647 struct f71882fg_data *data = dev_get_drvdata(dev);
648 int nr = to_sensor_dev_attr(devattr)->index;
649 int val = simple_strtoul(buf, NULL, 10) / 1000;
650
651 if (val > 255)
652 val = 255;
653
654 mutex_lock(&data->update_lock);
655 f71882fg_write8(data, F71882FG_REG_TEMP_OVT(nr), val);
656 data->temp_ovt[nr] = val;
657 mutex_unlock(&data->update_lock);
658
659 return count;
660 }
661
662 static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
663 *devattr, char *buf)
664 {
665 struct f71882fg_data *data = f71882fg_update_device(dev);
666 int nr = to_sensor_dev_attr(devattr)->index;
667
668 return sprintf(buf, "%d\n",
669 (data->temp_ovt[nr] - data->temp_hyst[nr]) * 1000);
670 }
671
672 static ssize_t show_temp_type(struct device *dev, struct device_attribute
673 *devattr, char *buf)
674 {
675 struct f71882fg_data *data = f71882fg_update_device(dev);
676 int nr = to_sensor_dev_attr(devattr)->index;
677
678 return sprintf(buf, "%d\n", data->temp_type[nr]);
679 }
680
681 static ssize_t show_temp_beep(struct device *dev, struct device_attribute
682 *devattr, char *buf)
683 {
684 struct f71882fg_data *data = f71882fg_update_device(dev);
685 int nr = to_sensor_dev_attr(devattr)->index;
686
687 if (data->temp_beep & (1 << (nr + 1)))
688 return sprintf(buf, "1\n");
689 else
690 return sprintf(buf, "0\n");
691 }
692
693 static ssize_t store_temp_beep(struct device *dev, struct device_attribute
694 *devattr, const char *buf, size_t count)
695 {
696 struct f71882fg_data *data = dev_get_drvdata(dev);
697 int nr = to_sensor_dev_attr(devattr)->index;
698 int val = simple_strtoul(buf, NULL, 10);
699
700 mutex_lock(&data->update_lock);
701 if (val)
702 data->temp_beep |= 1 << (nr + 1);
703 else
704 data->temp_beep &= ~(1 << (nr + 1));
705
706 f71882fg_write8(data, F71882FG_REG_TEMP_BEEP, data->temp_beep);
707 mutex_unlock(&data->update_lock);
708
709 return count;
710 }
711
712 static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
713 *devattr, char *buf)
714 {
715 struct f71882fg_data *data = f71882fg_update_device(dev);
716 int nr = to_sensor_dev_attr(devattr)->index;
717
718 if (data->temp_status & (1 << (nr + 1)))
719 return sprintf(buf, "1\n");
720 else
721 return sprintf(buf, "0\n");
722 }
723
724 static ssize_t show_temp_fault(struct device *dev, struct device_attribute
725 *devattr, char *buf)
726 {
727 struct f71882fg_data *data = f71882fg_update_device(dev);
728 int nr = to_sensor_dev_attr(devattr)->index;
729
730 if (data->temp_diode_open & (1 << (nr + 1)))
731 return sprintf(buf, "1\n");
732 else
733 return sprintf(buf, "0\n");
734 }
735
736 static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
737 char *buf)
738 {
739 return sprintf(buf, DRVNAME "\n");
740 }
741
742
743 static int __devinit f71882fg_probe(struct platform_device * pdev)
744 {
745 struct f71882fg_data *data;
746 int err, i;
747 u8 start_reg;
748
749 if (!(data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL)))
750 return -ENOMEM;
751
752 data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
753 mutex_init(&data->update_lock);
754 platform_set_drvdata(pdev, data);
755
756 /* Register sysfs interface files */
757 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++) {
758 err = device_create_file(&pdev->dev, &f71882fg_dev_attr[i]);
759 if (err)
760 goto exit_unregister_sysfs;
761 }
762
763 start_reg = f71882fg_read8(data, F71882FG_REG_START);
764 if (start_reg & 0x01) {
765 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++) {
766 err = device_create_file(&pdev->dev,
767 &f71882fg_in_temp_attr[i].dev_attr);
768 if (err)
769 goto exit_unregister_sysfs;
770 }
771 }
772
773 if (start_reg & 0x02) {
774 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++) {
775 err = device_create_file(&pdev->dev,
776 &f71882fg_fan_attr[i].dev_attr);
777 if (err)
778 goto exit_unregister_sysfs;
779 }
780 }
781
782 data->hwmon_dev = hwmon_device_register(&pdev->dev);
783 if (IS_ERR(data->hwmon_dev)) {
784 err = PTR_ERR(data->hwmon_dev);
785 goto exit_unregister_sysfs;
786 }
787
788 return 0;
789
790 exit_unregister_sysfs:
791 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
792 device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
793
794 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
795 device_remove_file(&pdev->dev,
796 &f71882fg_in_temp_attr[i].dev_attr);
797
798 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
799 device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
800
801 kfree(data);
802
803 return err;
804 }
805
806 static int __devexit f71882fg_remove(struct platform_device *pdev)
807 {
808 int i;
809 struct f71882fg_data *data = platform_get_drvdata(pdev);
810
811 platform_set_drvdata(pdev, NULL);
812 hwmon_device_unregister(data->hwmon_dev);
813
814 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
815 device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
816
817 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
818 device_remove_file(&pdev->dev,
819 &f71882fg_in_temp_attr[i].dev_attr);
820
821 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
822 device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
823
824 kfree(data);
825
826 return 0;
827 }
828
829 static int __init f71882fg_find(int sioaddr, unsigned short *address)
830 {
831 int err = -ENODEV;
832 u16 devid;
833 u8 start_reg;
834 struct f71882fg_data data;
835
836 superio_enter(sioaddr);
837
838 devid = superio_inw(sioaddr, SIO_REG_MANID);
839 if (devid != SIO_FINTEK_ID) {
840 printk(KERN_INFO DRVNAME ": Not a Fintek device\n");
841 goto exit;
842 }
843
844 devid = force_id ? force_id : superio_inw(sioaddr, SIO_REG_DEVID);
845 if (devid != SIO_F71882_ID) {
846 printk(KERN_INFO DRVNAME ": Unsupported Fintek device\n");
847 goto exit;
848 }
849
850 superio_select(sioaddr, SIO_F71882FG_LD_HWM);
851 if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
852 printk(KERN_WARNING DRVNAME ": Device not activated\n");
853 goto exit;
854 }
855
856 *address = superio_inw(sioaddr, SIO_REG_ADDR);
857 if (*address == 0)
858 {
859 printk(KERN_WARNING DRVNAME ": Base address not set\n");
860 goto exit;
861 }
862 *address &= ~(REGION_LENGTH - 1); /* Ignore 3 LSB */
863
864 data.addr = *address;
865 start_reg = f71882fg_read8(&data, F71882FG_REG_START);
866 if (!(start_reg & 0x03)) {
867 printk(KERN_WARNING DRVNAME
868 ": Hardware monitoring not activated\n");
869 goto exit;
870 }
871
872 err = 0;
873 printk(KERN_INFO DRVNAME ": Found F71882FG chip at %#x, revision %d\n",
874 (unsigned int)*address,
875 (int)superio_inb(sioaddr, SIO_REG_DEVREV));
876 exit:
877 superio_exit(sioaddr);
878 return err;
879 }
880
881 static int __init f71882fg_device_add(unsigned short address)
882 {
883 struct resource res = {
884 .start = address,
885 .end = address + REGION_LENGTH - 1,
886 .flags = IORESOURCE_IO,
887 };
888 int err;
889
890 f71882fg_pdev = platform_device_alloc(DRVNAME, address);
891 if (!f71882fg_pdev)
892 return -ENOMEM;
893
894 res.name = f71882fg_pdev->name;
895 err = platform_device_add_resources(f71882fg_pdev, &res, 1);
896 if (err) {
897 printk(KERN_ERR DRVNAME ": Device resource addition failed\n");
898 goto exit_device_put;
899 }
900
901 err = platform_device_add(f71882fg_pdev);
902 if (err) {
903 printk(KERN_ERR DRVNAME ": Device addition failed\n");
904 goto exit_device_put;
905 }
906
907 return 0;
908
909 exit_device_put:
910 platform_device_put(f71882fg_pdev);
911
912 return err;
913 }
914
915 static int __init f71882fg_init(void)
916 {
917 int err = -ENODEV;
918 unsigned short address;
919
920 if (f71882fg_find(0x2e, &address) && f71882fg_find(0x4e, &address))
921 goto exit;
922
923 if ((err = platform_driver_register(&f71882fg_driver)))
924 goto exit;
925
926 if ((err = f71882fg_device_add(address)))
927 goto exit_driver;
928
929 return 0;
930
931 exit_driver:
932 platform_driver_unregister(&f71882fg_driver);
933 exit:
934 return err;
935 }
936
937 static void __exit f71882fg_exit(void)
938 {
939 platform_device_unregister(f71882fg_pdev);
940 platform_driver_unregister(&f71882fg_driver);
941 }
942
943 MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver");
944 MODULE_AUTHOR("Hans Edgington (hans@edgington.nl)");
945 MODULE_LICENSE("GPL");
946
947 module_init(f71882fg_init);
948 module_exit(f71882fg_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree