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revert-mm-fix-blkdev-size-calculation-in-generic_write_checks
[linux-2.6/linux-trees-mm.git] / drivers / hwmon / f71882fg.c
blobad61ade50c9ff060a9e0273f43b24748698dc26b
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 <linux/acpi.h>
31 #include <asm/io.h>
32
33 #define DRVNAME "f71882fg"
34
35 #define SIO_F71882FG_LD_HWM 0x04 /* Hardware monitor logical device*/
36 #define SIO_UNLOCK_KEY 0x87 /* Key to enable Super-I/O */
37 #define SIO_LOCK_KEY 0xAA /* Key to diasble Super-I/O */
38
39 #define SIO_REG_LDSEL 0x07 /* Logical device select */
40 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
41 #define SIO_REG_DEVREV 0x22 /* Device revision */
42 #define SIO_REG_MANID 0x23 /* Fintek ID (2 bytes) */
43 #define SIO_REG_ENABLE 0x30 /* Logical device enable */
44 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
45
46 #define SIO_FINTEK_ID 0x1934 /* Manufacturers ID */
47 #define SIO_F71882_ID 0x0541 /* Chipset ID */
48
49 #define REGION_LENGTH 8
50 #define ADDR_REG_OFFSET 5
51 #define DATA_REG_OFFSET 6
52
53 #define F71882FG_REG_PECI 0x0A
54
55 #define F71882FG_REG_IN_STATUS 0x12
56 #define F71882FG_REG_IN_BEEP 0x13
57 #define F71882FG_REG_IN(nr) (0x20 + (nr))
58 #define F71882FG_REG_IN1_HIGH 0x32
59
60 #define F71882FG_REG_FAN(nr) (0xA0 + (16 * (nr)))
61 #define F71882FG_REG_FAN_STATUS 0x92
62 #define F71882FG_REG_FAN_BEEP 0x93
63
64 #define F71882FG_REG_TEMP(nr) (0x72 + 2 * (nr))
65 #define F71882FG_REG_TEMP_OVT(nr) (0x82 + 2 * (nr))
66 #define F71882FG_REG_TEMP_HIGH(nr) (0x83 + 2 * (nr))
67 #define F71882FG_REG_TEMP_STATUS 0x62
68 #define F71882FG_REG_TEMP_BEEP 0x63
69 #define F71882FG_REG_TEMP_HYST1 0x6C
70 #define F71882FG_REG_TEMP_HYST23 0x6D
71 #define F71882FG_REG_TEMP_TYPE 0x6B
72 #define F71882FG_REG_TEMP_DIODE_OPEN 0x6F
73
74 #define F71882FG_REG_START 0x01
75
76 #define FAN_MIN_DETECT 366 /* Lowest detectable fanspeed */
77
78 static struct platform_device *f71882fg_pdev = NULL;
79
80 /* Super-I/O Function prototypes */
81 static inline int superio_inb(int base, int reg);
82 static inline int superio_inw(int base, int reg);
83 static inline void superio_enter(int base);
84 static inline void superio_select(int base, int ld);
85 static inline void superio_exit(int base);
86
87 static inline u16 fan_from_reg ( u16 reg );
88
89 struct f71882fg_data {
90 unsigned short addr;
91 struct device *hwmon_dev;
92
93 struct mutex update_lock;
94 char valid; /* !=0 if following fields are valid */
95 unsigned long last_updated; /* In jiffies */
96 unsigned long last_limits; /* In jiffies */
97
98 /* Register Values */
99 u8 in[9];
100 u8 in1_max;
101 u8 in_status;
102 u8 in_beep;
103 u16 fan[4];
104 u8 fan_status;
105 u8 fan_beep;
106 u8 temp[3];
107 u8 temp_ovt[3];
108 u8 temp_high[3];
109 u8 temp_hyst[3];
110 u8 temp_type[3];
111 u8 temp_status;
112 u8 temp_beep;
113 u8 temp_diode_open;
114 };
115
116 static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg);
117 static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg);
118 static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val);
119
120 /* Sysfs in*/
121 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
122 char *buf);
123 static ssize_t show_in_max(struct device *dev, struct device_attribute
124 *devattr, char *buf);
125 static ssize_t store_in_max(struct device *dev, struct device_attribute
126 *devattr, const char *buf, size_t count);
127 static ssize_t show_in_beep(struct device *dev, struct device_attribute
128 *devattr, char *buf);
129 static ssize_t store_in_beep(struct device *dev, struct device_attribute
130 *devattr, const char *buf, size_t count);
131 static ssize_t show_in_alarm(struct device *dev, struct device_attribute
132 *devattr, char *buf);
133 /* Sysfs Fan */
134 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
135 char *buf);
136 static ssize_t show_fan_beep(struct device *dev, struct device_attribute
137 *devattr, char *buf);
138 static ssize_t store_fan_beep(struct device *dev, struct device_attribute
139 *devattr, const char *buf, size_t count);
140 static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
141 *devattr, char *buf);
142 /* Sysfs Temp */
143 static ssize_t show_temp(struct device *dev, struct device_attribute
144 *devattr, char *buf);
145 static ssize_t show_temp_max(struct device *dev, struct device_attribute
146 *devattr, char *buf);
147 static ssize_t store_temp_max(struct device *dev, struct device_attribute
148 *devattr, const char *buf, size_t count);
149 static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
150 *devattr, char *buf);
151 static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
152 *devattr, const char *buf, size_t count);
153 static ssize_t show_temp_crit(struct device *dev, struct device_attribute
154 *devattr, char *buf);
155 static ssize_t store_temp_crit(struct device *dev, struct device_attribute
156 *devattr, const char *buf, size_t count);
157 static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
158 *devattr, char *buf);
159 static ssize_t show_temp_type(struct device *dev, struct device_attribute
160 *devattr, char *buf);
161 static ssize_t show_temp_beep(struct device *dev, struct device_attribute
162 *devattr, char *buf);
163 static ssize_t store_temp_beep(struct device *dev, struct device_attribute
164 *devattr, const char *buf, size_t count);
165 static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
166 *devattr, char *buf);
167 static ssize_t show_temp_fault(struct device *dev, struct device_attribute
168 *devattr, char *buf);
169 /* Sysfs misc */
170 static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
171 char *buf);
172
173 static int __devinit f71882fg_probe(struct platform_device * pdev);
174 static int __devexit f71882fg_remove(struct platform_device *pdev);
175 static int __init f71882fg_init(void);
176 static int __init f71882fg_find(int sioaddr, unsigned short *address);
177 static int __init f71882fg_device_add(unsigned short address);
178 static void __exit f71882fg_exit(void);
179
180 static struct platform_driver f71882fg_driver = {
181 .driver = {
182 .owner = THIS_MODULE,
183 .name = DRVNAME,
184 },
185 .probe = f71882fg_probe,
186 .remove = __devexit_p(f71882fg_remove),
187 };
188
189 static struct device_attribute f71882fg_dev_attr[] =
190 {
191 __ATTR( name, S_IRUGO, show_name, NULL ),
192 };
193
194 static struct sensor_device_attribute f71882fg_in_temp_attr[] =
195 {
196 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
197 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
198 SENSOR_ATTR(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max, 1),
199 SENSOR_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep, 1),
200 SENSOR_ATTR(in1_alarm, S_IRUGO, show_in_alarm, NULL, 1),
201 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
202 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
203 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
204 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
205 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
206 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
207 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
208 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
209 SENSOR_ATTR(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
210 store_temp_max, 0),
211 SENSOR_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
212 store_temp_max_hyst, 0),
213 SENSOR_ATTR(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
214 store_temp_crit, 0),
215 SENSOR_ATTR(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 0),
216 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
217 SENSOR_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_temp_beep,
218 store_temp_beep, 0),
219 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0),
220 SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
221 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
222 SENSOR_ATTR(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
223 store_temp_max, 1),
224 SENSOR_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
225 store_temp_max_hyst, 1),
226 SENSOR_ATTR(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
227 store_temp_crit, 1),
228 SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1),
229 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
230 SENSOR_ATTR(temp2_beep, S_IRUGO|S_IWUSR, show_temp_beep,
231 store_temp_beep, 1),
232 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 1),
233 SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
234 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
235 SENSOR_ATTR(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
236 store_temp_max, 2),
237 SENSOR_ATTR(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
238 store_temp_max_hyst, 2),
239 SENSOR_ATTR(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
240 store_temp_crit, 2),
241 SENSOR_ATTR(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 2),
242 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
243 SENSOR_ATTR(temp3_beep, S_IRUGO|S_IWUSR, show_temp_beep,
244 store_temp_beep, 2),
245 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 2),
246 SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2)
247 };
248
249 static struct sensor_device_attribute f71882fg_fan_attr[] =
250 {
251 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
252 SENSOR_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_fan_beep,
253 store_fan_beep, 0),
254 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0),
255 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
256 SENSOR_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_fan_beep,
257 store_fan_beep, 1),
258 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1),
259 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
260 SENSOR_ATTR(fan3_beep, S_IRUGO|S_IWUSR, show_fan_beep,
261 store_fan_beep, 2),
262 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2),
263 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
264 SENSOR_ATTR(fan4_beep, S_IRUGO|S_IWUSR, show_fan_beep,
265 store_fan_beep, 3),
266 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3)
267 };
268
269
270 /* Super I/O functions */
271 static inline int superio_inb(int base, int reg)
272 {
273 outb(reg, base);
274 return inb(base + 1);
275 }
276
277 static int superio_inw(int base, int reg)
278 {
279 int val;
280 outb(reg++, base);
281 val = inb(base + 1) << 8;
282 outb(reg, base);
283 val |= inb(base + 1);
284 return val;
285 }
286
287 static inline void superio_enter(int base)
288 {
289 /* according to the datasheet the key must be send twice! */
290 outb( SIO_UNLOCK_KEY, base);
291 outb( SIO_UNLOCK_KEY, base);
292 }
293
294 static inline void superio_select( int base, int ld)
295 {
296 outb(SIO_REG_LDSEL, base);
297 outb(ld, base + 1);
298 }
299
300 static inline void superio_exit(int base)
301 {
302 outb(SIO_LOCK_KEY, base);
303 }
304
305 static inline u16 fan_from_reg(u16 reg)
306 {
307 return reg ? (1500000 / reg) : 0;
308 }
309
310 static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg)
311 {
312 u8 val;
313
314 outb(reg, data->addr + ADDR_REG_OFFSET);
315 val = inb(data->addr + DATA_REG_OFFSET);
316
317 return val;
318 }
319
320 static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg)
321 {
322 u16 val;
323
324 outb(reg++, data->addr + ADDR_REG_OFFSET);
325 val = inb(data->addr + DATA_REG_OFFSET) << 8;
326 outb(reg, data->addr + ADDR_REG_OFFSET);
327 val |= inb(data->addr + DATA_REG_OFFSET);
328
329 return val;
330 }
331
332 static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val)
333 {
334 outb(reg, data->addr + ADDR_REG_OFFSET);
335 outb(val, data->addr + DATA_REG_OFFSET);
336 }
337
338 static struct f71882fg_data *f71882fg_update_device(struct device * dev)
339 {
340 struct f71882fg_data *data = dev_get_drvdata(dev);
341 int nr, reg, reg2;
342
343 mutex_lock(&data->update_lock);
344
345 /* Update once every 60 seconds */
346 if ( time_after(jiffies, data->last_limits + 60 * HZ ) ||
347 !data->valid) {
348 data->in1_max = f71882fg_read8(data, F71882FG_REG_IN1_HIGH);
349 data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP);
350
351 /* Get High & boundary temps*/
352 for (nr = 0; nr < 3; nr++) {
353 data->temp_ovt[nr] = f71882fg_read8(data,
354 F71882FG_REG_TEMP_OVT(nr));
355 data->temp_high[nr] = f71882fg_read8(data,
356 F71882FG_REG_TEMP_HIGH(nr));
357 }
358
359 /* Have to hardcode hyst*/
360 data->temp_hyst[0] = f71882fg_read8(data,
361 F71882FG_REG_TEMP_HYST1) >> 4;
362 /* Hyst temps 2 & 3 stored in same register */
363 reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
364 data->temp_hyst[1] = reg & 0x0F;
365 data->temp_hyst[2] = reg >> 4;
366
367 /* Have to hardcode type, because temp1 is special */
368 reg = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
369 reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
370 if ((reg2 & 0x03) == 0x01)
371 data->temp_type[0] = 6 /* PECI */;
372 else if ((reg2 & 0x03) == 0x02)
373 data->temp_type[0] = 5 /* AMDSI */;
374 else
375 data->temp_type[0] = (reg & 0x02) ? 2 : 4;
376
377 data->temp_type[1] = (reg & 0x04) ? 2 : 4;
378 data->temp_type[2] = (reg & 0x08) ? 2 : 4;
379
380 data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP);
381
382 data->fan_beep = f71882fg_read8(data, F71882FG_REG_FAN_BEEP);
383
384 data->last_limits = jiffies;
385 }
386
387 /* Update every second */
388 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
389 data->temp_status = f71882fg_read8(data,
390 F71882FG_REG_TEMP_STATUS);
391 data->temp_diode_open = f71882fg_read8(data,
392 F71882FG_REG_TEMP_DIODE_OPEN);
393 for (nr = 0; nr < 3; nr++)
394 data->temp[nr] = f71882fg_read8(data,
395 F71882FG_REG_TEMP(nr));
396
397 data->fan_status = f71882fg_read8(data,
398 F71882FG_REG_FAN_STATUS);
399 for (nr = 0; nr < 4; nr++)
400 data->fan[nr] = f71882fg_read16(data,
401 F71882FG_REG_FAN(nr));
402
403 data->in_status = f71882fg_read8(data,
404 F71882FG_REG_IN_STATUS);
405 for (nr = 0; nr < 9; nr++)
406 data->in[nr] = f71882fg_read8(data,
407 F71882FG_REG_IN(nr));
408
409 data->last_updated = jiffies;
410 data->valid = 1;
411 }
412
413 mutex_unlock(&data->update_lock);
414
415 return data;
416 }
417
418 /* Sysfs Interface */
419 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
420 char *buf)
421 {
422 struct f71882fg_data *data = f71882fg_update_device(dev);
423 int nr = to_sensor_dev_attr(devattr)->index;
424 int speed = fan_from_reg(data->fan[nr]);
425
426 if (speed == FAN_MIN_DETECT)
427 speed = 0;
428
429 return sprintf(buf, "%d\n", speed);
430 }
431
432 static ssize_t show_fan_beep(struct device *dev, struct device_attribute
433 *devattr, char *buf)
434 {
435 struct f71882fg_data *data = f71882fg_update_device(dev);
436 int nr = to_sensor_dev_attr(devattr)->index;
437
438 if (data->fan_beep & (1 << nr))
439 return sprintf(buf, "1\n");
440 else
441 return sprintf(buf, "0\n");
442 }
443
444 static ssize_t store_fan_beep(struct device *dev, struct device_attribute
445 *devattr, const char *buf, size_t count)
446 {
447 struct f71882fg_data *data = dev_get_drvdata(dev);
448 int nr = to_sensor_dev_attr(devattr)->index;
449 int val = simple_strtoul(buf, NULL, 10);
450
451 mutex_lock(&data->update_lock);
452 if (val)
453 data->fan_beep |= 1 << nr;
454 else
455 data->fan_beep &= ~(1 << nr);
456
457 f71882fg_write8(data, F71882FG_REG_FAN_BEEP, data->fan_beep);
458 mutex_unlock(&data->update_lock);
459
460 return count;
461 }
462
463 static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
464 *devattr, char *buf)
465 {
466 struct f71882fg_data *data = f71882fg_update_device(dev);
467 int nr = to_sensor_dev_attr(devattr)->index;
468
469 if (data->fan_status & (1 << nr))
470 return sprintf(buf, "1\n");
471 else
472 return sprintf(buf, "0\n");
473 }
474
475 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
476 char *buf)
477 {
478 struct f71882fg_data *data = f71882fg_update_device(dev);
479 int nr = to_sensor_dev_attr(devattr)->index;
480
481 return sprintf(buf, "%d\n", data->in[nr] * 8);
482 }
483
484 static ssize_t show_in_max(struct device *dev, struct device_attribute
485 *devattr, char *buf)
486 {
487 struct f71882fg_data *data = f71882fg_update_device(dev);
488
489 return sprintf(buf, "%d\n", data->in1_max * 8);
490 }
491
492 static ssize_t store_in_max(struct device *dev, struct device_attribute
493 *devattr, const char *buf, size_t count)
494 {
495 struct f71882fg_data *data = dev_get_drvdata(dev);
496 int val = simple_strtoul(buf, NULL, 10) / 8;
497
498 if (val > 255)
499 val = 255;
500
501 mutex_lock(&data->update_lock);
502 f71882fg_write8(data, F71882FG_REG_IN1_HIGH, val);
503 data->in1_max = val;
504 mutex_unlock(&data->update_lock);
505
506 return count;
507 }
508
509 static ssize_t show_in_beep(struct device *dev, struct device_attribute
510 *devattr, char *buf)
511 {
512 struct f71882fg_data *data = f71882fg_update_device(dev);
513 int nr = to_sensor_dev_attr(devattr)->index;
514
515 if (data->in_beep & (1 << nr))
516 return sprintf(buf, "1\n");
517 else
518 return sprintf(buf, "0\n");
519 }
520
521 static ssize_t store_in_beep(struct device *dev, struct device_attribute
522 *devattr, const char *buf, size_t count)
523 {
524 struct f71882fg_data *data = dev_get_drvdata(dev);
525 int nr = to_sensor_dev_attr(devattr)->index;
526 int val = simple_strtoul(buf, NULL, 10);
527
528 mutex_lock(&data->update_lock);
529 if (val)
530 data->in_beep |= 1 << nr;
531 else
532 data->in_beep &= ~(1 << nr);
533
534 f71882fg_write8(data, F71882FG_REG_IN_BEEP, data->in_beep);
535 mutex_unlock(&data->update_lock);
536
537 return count;
538 }
539
540 static ssize_t show_in_alarm(struct device *dev, struct device_attribute
541 *devattr, char *buf)
542 {
543 struct f71882fg_data *data = f71882fg_update_device(dev);
544 int nr = to_sensor_dev_attr(devattr)->index;
545
546 if (data->in_status & (1 << nr))
547 return sprintf(buf, "1\n");
548 else
549 return sprintf(buf, "0\n");
550 }
551
552 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
553 char *buf)
554 {
555 struct f71882fg_data *data = f71882fg_update_device(dev);
556 int nr = to_sensor_dev_attr(devattr)->index;
557
558 return sprintf(buf, "%d\n", data->temp[nr] * 1000);
559 }
560
561 static ssize_t show_temp_max(struct device *dev, struct device_attribute
562 *devattr, char *buf)
563 {
564 struct f71882fg_data *data = f71882fg_update_device(dev);
565 int nr = to_sensor_dev_attr(devattr)->index;
566
567 return sprintf(buf, "%d\n", data->temp_high[nr] * 1000);
568 }
569
570 static ssize_t store_temp_max(struct device *dev, struct device_attribute
571 *devattr, const char *buf, size_t count)
572 {
573 struct f71882fg_data *data = dev_get_drvdata(dev);
574 int nr = to_sensor_dev_attr(devattr)->index;
575 int val = simple_strtoul(buf, NULL, 10) / 1000;
576
577 if (val > 255)
578 val = 255;
579
580 mutex_lock(&data->update_lock);
581 f71882fg_write8(data, F71882FG_REG_TEMP_HIGH(nr), val);
582 data->temp_high[nr] = val;
583 mutex_unlock(&data->update_lock);
584
585 return count;
586 }
587
588 static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
589 *devattr, char *buf)
590 {
591 struct f71882fg_data *data = f71882fg_update_device(dev);
592 int nr = to_sensor_dev_attr(devattr)->index;
593
594 return sprintf(buf, "%d\n",
595 (data->temp_high[nr] - data->temp_hyst[nr]) * 1000);
596 }
597
598 static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
599 *devattr, const char *buf, size_t count)
600 {
601 struct f71882fg_data *data = dev_get_drvdata(dev);
602 int nr = to_sensor_dev_attr(devattr)->index;
603 int val = simple_strtoul(buf, NULL, 10) / 1000;
604 ssize_t ret = count;
605
606 mutex_lock(&data->update_lock);
607
608 /* convert abs to relative and check */
609 val = data->temp_high[nr] - val;
610 if (val < 0 || val > 15) {
611 ret = -EINVAL;
612 goto store_temp_max_hyst_exit;
613 }
614
615 data->temp_hyst[nr] = val;
616
617 /* convert value to register contents */
618 switch (nr) {
619 case 0:
620 val = val << 4;
621 break;
622 case 1:
623 val = val | (data->temp_hyst[2] << 4);
624 break;
625 case 2:
626 val = data->temp_hyst[1] | (val << 4);
627 break;
628 }
629
630 f71882fg_write8(data, nr ? F71882FG_REG_TEMP_HYST23 :
631 F71882FG_REG_TEMP_HYST1, val);
632
633 store_temp_max_hyst_exit:
634 mutex_unlock(&data->update_lock);
635 return ret;
636 }
637
638 static ssize_t show_temp_crit(struct device *dev, struct device_attribute
639 *devattr, char *buf)
640 {
641 struct f71882fg_data *data = f71882fg_update_device(dev);
642 int nr = to_sensor_dev_attr(devattr)->index;
643
644 return sprintf(buf, "%d\n", data->temp_ovt[nr] * 1000);
645 }
646
647 static ssize_t store_temp_crit(struct device *dev, struct device_attribute
648 *devattr, const char *buf, size_t count)
649 {
650 struct f71882fg_data *data = dev_get_drvdata(dev);
651 int nr = to_sensor_dev_attr(devattr)->index;
652 int val = simple_strtoul(buf, NULL, 10) / 1000;
653
654 if (val > 255)
655 val = 255;
656
657 mutex_lock(&data->update_lock);
658 f71882fg_write8(data, F71882FG_REG_TEMP_OVT(nr), val);
659 data->temp_ovt[nr] = val;
660 mutex_unlock(&data->update_lock);
661
662 return count;
663 }
664
665 static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
666 *devattr, char *buf)
667 {
668 struct f71882fg_data *data = f71882fg_update_device(dev);
669 int nr = to_sensor_dev_attr(devattr)->index;
670
671 return sprintf(buf, "%d\n",
672 (data->temp_ovt[nr] - data->temp_hyst[nr]) * 1000);
673 }
674
675 static ssize_t show_temp_type(struct device *dev, struct device_attribute
676 *devattr, char *buf)
677 {
678 struct f71882fg_data *data = f71882fg_update_device(dev);
679 int nr = to_sensor_dev_attr(devattr)->index;
680
681 return sprintf(buf, "%d\n", data->temp_type[nr]);
682 }
683
684 static ssize_t show_temp_beep(struct device *dev, struct device_attribute
685 *devattr, char *buf)
686 {
687 struct f71882fg_data *data = f71882fg_update_device(dev);
688 int nr = to_sensor_dev_attr(devattr)->index;
689
690 if (data->temp_beep & (1 << (nr + 1)))
691 return sprintf(buf, "1\n");
692 else
693 return sprintf(buf, "0\n");
694 }
695
696 static ssize_t store_temp_beep(struct device *dev, struct device_attribute
697 *devattr, const char *buf, size_t count)
698 {
699 struct f71882fg_data *data = dev_get_drvdata(dev);
700 int nr = to_sensor_dev_attr(devattr)->index;
701 int val = simple_strtoul(buf, NULL, 10);
702
703 mutex_lock(&data->update_lock);
704 if (val)
705 data->temp_beep |= 1 << (nr + 1);
706 else
707 data->temp_beep &= ~(1 << (nr + 1));
708
709 f71882fg_write8(data, F71882FG_REG_TEMP_BEEP, data->temp_beep);
710 mutex_unlock(&data->update_lock);
711
712 return count;
713 }
714
715 static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
716 *devattr, char *buf)
717 {
718 struct f71882fg_data *data = f71882fg_update_device(dev);
719 int nr = to_sensor_dev_attr(devattr)->index;
720
721 if (data->temp_status & (1 << (nr + 1)))
722 return sprintf(buf, "1\n");
723 else
724 return sprintf(buf, "0\n");
725 }
726
727 static ssize_t show_temp_fault(struct device *dev, struct device_attribute
728 *devattr, char *buf)
729 {
730 struct f71882fg_data *data = f71882fg_update_device(dev);
731 int nr = to_sensor_dev_attr(devattr)->index;
732
733 if (data->temp_diode_open & (1 << (nr + 1)))
734 return sprintf(buf, "1\n");
735 else
736 return sprintf(buf, "0\n");
737 }
738
739 static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
740 char *buf)
741 {
742 return sprintf(buf, DRVNAME "\n");
743 }
744
745
746 static int __devinit f71882fg_probe(struct platform_device * pdev)
747 {
748 struct f71882fg_data *data;
749 int err, i;
750 u8 start_reg;
751
752 if (!(data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL)))
753 return -ENOMEM;
754
755 data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
756 mutex_init(&data->update_lock);
757 platform_set_drvdata(pdev, data);
758
759 /* Register sysfs interface files */
760 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++) {
761 err = device_create_file(&pdev->dev, &f71882fg_dev_attr[i]);
762 if (err)
763 goto exit_unregister_sysfs;
764 }
765
766 start_reg = f71882fg_read8(data, F71882FG_REG_START);
767 if (start_reg & 0x01) {
768 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++) {
769 err = device_create_file(&pdev->dev,
770 &f71882fg_in_temp_attr[i].dev_attr);
771 if (err)
772 goto exit_unregister_sysfs;
773 }
774 }
775
776 if (start_reg & 0x02) {
777 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++) {
778 err = device_create_file(&pdev->dev,
779 &f71882fg_fan_attr[i].dev_attr);
780 if (err)
781 goto exit_unregister_sysfs;
782 }
783 }
784
785 data->hwmon_dev = hwmon_device_register(&pdev->dev);
786 if (IS_ERR(data->hwmon_dev)) {
787 err = PTR_ERR(data->hwmon_dev);
788 goto exit_unregister_sysfs;
789 }
790
791 return 0;
792
793 exit_unregister_sysfs:
794 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
795 device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
796
797 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
798 device_remove_file(&pdev->dev,
799 &f71882fg_in_temp_attr[i].dev_attr);
800
801 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
802 device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
803
804 kfree(data);
805
806 return err;
807 }
808
809 static int __devexit f71882fg_remove(struct platform_device *pdev)
810 {
811 int i;
812 struct f71882fg_data *data = platform_get_drvdata(pdev);
813
814 platform_set_drvdata(pdev, NULL);
815 hwmon_device_unregister(data->hwmon_dev);
816
817 for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
818 device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
819
820 for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
821 device_remove_file(&pdev->dev,
822 &f71882fg_in_temp_attr[i].dev_attr);
823
824 for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
825 device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
826
827 kfree(data);
828
829 return 0;
830 }
831
832 static int __init f71882fg_find(int sioaddr, unsigned short *address)
833 {
834 int err = -ENODEV;
835 u16 devid;
836 u8 start_reg;
837 struct f71882fg_data data;
838
839 superio_enter(sioaddr);
840
841 devid = superio_inw(sioaddr, SIO_REG_MANID);
842 if (devid != SIO_FINTEK_ID) {
843 printk(KERN_INFO DRVNAME ": Not a Fintek device\n");
844 goto exit;
845 }
846
847 devid = superio_inw(sioaddr, SIO_REG_DEVID);
848 if (devid != SIO_F71882_ID) {
849 printk(KERN_INFO DRVNAME ": Unsupported Fintek device\n");
850 goto exit;
851 }
852
853 superio_select(sioaddr, SIO_F71882FG_LD_HWM);
854 if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
855 printk(KERN_WARNING DRVNAME ": Device not activated\n");
856 goto exit;
857 }
858
859 *address = superio_inw(sioaddr, SIO_REG_ADDR);
860 if (*address == 0)
861 {
862 printk(KERN_WARNING DRVNAME ": Base address not set\n");
863 goto exit;
864 }
865 *address &= ~(REGION_LENGTH - 1); /* Ignore 3 LSB */
866
867 data.addr = *address;
868 start_reg = f71882fg_read8(&data, F71882FG_REG_START);
869 if (!(start_reg & 0x03)) {
870 printk(KERN_WARNING DRVNAME
871 ": Hardware monitoring not activated\n");
872 goto exit;
873 }
874
875 err = 0;
876 printk(KERN_INFO DRVNAME ": Found F71882FG chip at %#x, revision %d\n",
877 (unsigned int)*address,
878 (int)superio_inb(sioaddr, SIO_REG_DEVREV));
879 exit:
880 superio_exit(sioaddr);
881 return err;
882 }
883
884 static int __init f71882fg_device_add(unsigned short address)
885 {
886 struct resource res = {
887 .start = address,
888 .end = address + REGION_LENGTH - 1,
889 .flags = IORESOURCE_IO,
890 };
891 int err;
892
893 f71882fg_pdev = platform_device_alloc(DRVNAME, address);
894 if (!f71882fg_pdev)
895 return -ENOMEM;
896
897 res.name = f71882fg_pdev->name;
898 err = acpi_check_resource_conflict(&res);
899 if (err)
900 return err;
901
902 err = platform_device_add_resources(f71882fg_pdev, &res, 1);
903 if (err) {
904 printk(KERN_ERR DRVNAME ": Device resource addition failed\n");
905 goto exit_device_put;
906 }
907
908 err = platform_device_add(f71882fg_pdev);
909 if (err) {
910 printk(KERN_ERR DRVNAME ": Device addition failed\n");
911 goto exit_device_put;
912 }
913
914 return 0;
915
916 exit_device_put:
917 platform_device_put(f71882fg_pdev);
918
919 return err;
920 }
921
922 static int __init f71882fg_init(void)
923 {
924 int err = -ENODEV;
925 unsigned short address;
926
927 if (f71882fg_find(0x2e, &address) && f71882fg_find(0x4e, &address))
928 goto exit;
929
930 if ((err = platform_driver_register(&f71882fg_driver)))
931 goto exit;
932
933 if ((err = f71882fg_device_add(address)))
934 goto exit_driver;
935
936 return 0;
937
938 exit_driver:
939 platform_driver_unregister(&f71882fg_driver);
940 exit:
941 return err;
942 }
943
944 static void __exit f71882fg_exit(void)
945 {
946 platform_device_unregister(f71882fg_pdev);
947 platform_driver_unregister(&f71882fg_driver);
948 }
949
950 MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver");
951 MODULE_AUTHOR("Hans Edgington (hans@edgington.nl)");
952 MODULE_LICENSE("GPL");
953
954 module_init(f71882fg_init);
955 module_exit(f71882fg_exit);
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