xref: /openbmc/linux/drivers/hwmon/pc87360.c (revision 565d76cb)
1 /*
2  *  pc87360.c - Part of lm_sensors, Linux kernel modules
3  *              for hardware monitoring
4  *  Copyright (C) 2004, 2007 Jean Delvare <khali@linux-fr.org>
5  *
6  *  Copied from smsc47m1.c:
7  *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
8  *
9  *  This program is free software; you can redistribute it and/or modify
10  *  it under the terms of the GNU General Public License as published by
11  *  the Free Software Foundation; either version 2 of the License, or
12  *  (at your option) any later version.
13  *
14  *  This program is distributed in the hope that it will be useful,
15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  *  GNU General Public License for more details.
18  *
19  *  You should have received a copy of the GNU General Public License
20  *  along with this program; if not, write to the Free Software
21  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22  *
23  *  Supports the following chips:
24  *
25  *  Chip        #vin    #fan    #pwm    #temp   devid
26  *  PC87360     -       2       2       -       0xE1
27  *  PC87363     -       2       2       -       0xE8
28  *  PC87364     -       3       3       -       0xE4
29  *  PC87365     11      3       3       2       0xE5
30  *  PC87366     11      3       3       3-4     0xE9
31  *
32  *  This driver assumes that no more than one chip is present, and one of
33  *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
34  */
35 
36 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
37 
38 #include <linux/module.h>
39 #include <linux/init.h>
40 #include <linux/slab.h>
41 #include <linux/jiffies.h>
42 #include <linux/platform_device.h>
43 #include <linux/hwmon.h>
44 #include <linux/hwmon-sysfs.h>
45 #include <linux/hwmon-vid.h>
46 #include <linux/err.h>
47 #include <linux/mutex.h>
48 #include <linux/acpi.h>
49 #include <linux/io.h>
50 
51 static u8 devid;
52 static struct platform_device *pdev;
53 static unsigned short extra_isa[3];
54 static u8 confreg[4];
55 
56 static int init = 1;
57 module_param(init, int, 0);
58 MODULE_PARM_DESC(init,
59  "Chip initialization level:\n"
60  " 0: None\n"
61  "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
62  " 2: Forcibly enable all voltage and temperature channels, except in9\n"
63  " 3: Forcibly enable all voltage and temperature channels, including in9");
64 
65 static unsigned short force_id;
66 module_param(force_id, ushort, 0);
67 MODULE_PARM_DESC(force_id, "Override the detected device ID");
68 
69 /*
70  * Super-I/O registers and operations
71  */
72 
73 #define DEV	0x07	/* Register: Logical device select */
74 #define DEVID	0x20	/* Register: Device ID */
75 #define ACT	0x30	/* Register: Device activation */
76 #define BASE	0x60	/* Register: Base address */
77 
78 #define FSCM	0x09	/* Logical device: fans */
79 #define VLM	0x0d	/* Logical device: voltages */
80 #define TMS	0x0e	/* Logical device: temperatures */
81 #define LDNI_MAX 3
82 static const u8 logdev[LDNI_MAX] = { FSCM, VLM, TMS };
83 
84 #define LD_FAN		0
85 #define LD_IN		1
86 #define LD_TEMP		2
87 
88 static inline void superio_outb(int sioaddr, int reg, int val)
89 {
90 	outb(reg, sioaddr);
91 	outb(val, sioaddr+1);
92 }
93 
94 static inline int superio_inb(int sioaddr, int reg)
95 {
96 	outb(reg, sioaddr);
97 	return inb(sioaddr+1);
98 }
99 
100 static inline void superio_exit(int sioaddr)
101 {
102 	outb(0x02, sioaddr);
103 	outb(0x02, sioaddr+1);
104 }
105 
106 /*
107  * Logical devices
108  */
109 
110 #define PC87360_EXTENT		0x10
111 #define PC87365_REG_BANK	0x09
112 #define NO_BANK			0xff
113 
114 /*
115  * Fan registers and conversions
116  */
117 
118 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
119 #define PC87360_REG_PRESCALE(nr)	(0x00 + 2 * (nr))
120 #define PC87360_REG_PWM(nr)		(0x01 + 2 * (nr))
121 #define PC87360_REG_FAN_MIN(nr)		(0x06 + 3 * (nr))
122 #define PC87360_REG_FAN(nr)		(0x07 + 3 * (nr))
123 #define PC87360_REG_FAN_STATUS(nr)	(0x08 + 3 * (nr))
124 
125 #define FAN_FROM_REG(val,div)		((val) == 0 ? 0: \
126 					 480000 / ((val)*(div)))
127 #define FAN_TO_REG(val,div)		((val) <= 100 ? 0 : \
128 					 480000 / ((val)*(div)))
129 #define FAN_DIV_FROM_REG(val)		(1 << ((val >> 5) & 0x03))
130 #define FAN_STATUS_FROM_REG(val)	((val) & 0x07)
131 
132 #define FAN_CONFIG_MONITOR(val,nr)	(((val) >> (2 + nr * 3)) & 1)
133 #define FAN_CONFIG_CONTROL(val,nr)	(((val) >> (3 + nr * 3)) & 1)
134 #define FAN_CONFIG_INVERT(val,nr)	(((val) >> (4 + nr * 3)) & 1)
135 
136 #define PWM_FROM_REG(val,inv)		((inv) ? 255 - (val) : (val))
137 static inline u8 PWM_TO_REG(int val, int inv)
138 {
139 	if (inv)
140 		val = 255 - val;
141 	if (val < 0)
142 		return 0;
143 	if (val > 255)
144 		return 255;
145 	return val;
146 }
147 
148 /*
149  * Voltage registers and conversions
150  */
151 
152 #define PC87365_REG_IN_CONVRATE		0x07
153 #define PC87365_REG_IN_CONFIG		0x08
154 #define PC87365_REG_IN			0x0B
155 #define PC87365_REG_IN_MIN		0x0D
156 #define PC87365_REG_IN_MAX		0x0C
157 #define PC87365_REG_IN_STATUS		0x0A
158 #define PC87365_REG_IN_ALARMS1		0x00
159 #define PC87365_REG_IN_ALARMS2		0x01
160 #define PC87365_REG_VID			0x06
161 
162 #define IN_FROM_REG(val,ref)		(((val) * (ref) + 128) / 256)
163 #define IN_TO_REG(val,ref)		((val) < 0 ? 0 : \
164 					 (val)*256 >= (ref)*255 ? 255: \
165 					 ((val) * 256 + (ref)/2) / (ref))
166 
167 /*
168  * Temperature registers and conversions
169  */
170 
171 #define PC87365_REG_TEMP_CONFIG		0x08
172 #define PC87365_REG_TEMP		0x0B
173 #define PC87365_REG_TEMP_MIN		0x0D
174 #define PC87365_REG_TEMP_MAX		0x0C
175 #define PC87365_REG_TEMP_CRIT		0x0E
176 #define PC87365_REG_TEMP_STATUS		0x0A
177 #define PC87365_REG_TEMP_ALARMS		0x00
178 
179 #define TEMP_FROM_REG(val)		((val) * 1000)
180 #define TEMP_TO_REG(val)		((val) < -55000 ? -55 : \
181 					 (val) > 127000 ? 127 : \
182 					 (val) < 0 ? ((val) - 500) / 1000 : \
183 					 ((val) + 500) / 1000)
184 
185 /*
186  * Device data
187  */
188 
189 struct pc87360_data {
190 	const char *name;
191 	struct device *hwmon_dev;
192 	struct mutex lock;
193 	struct mutex update_lock;
194 	char valid;		/* !=0 if following fields are valid */
195 	unsigned long last_updated;	/* In jiffies */
196 
197 	int address[3];
198 
199 	u8 fannr, innr, tempnr;
200 
201 	u8 fan[3];		/* Register value */
202 	u8 fan_min[3];		/* Register value */
203 	u8 fan_status[3];	/* Register value */
204 	u8 pwm[3];		/* Register value */
205 	u16 fan_conf;		/* Configuration register values, combined */
206 
207 	u16 in_vref;		/* 1 mV/bit */
208 	u8 in[14];		/* Register value */
209 	u8 in_min[14];		/* Register value */
210 	u8 in_max[14];		/* Register value */
211 	u8 in_crit[3];		/* Register value */
212 	u8 in_status[14];	/* Register value */
213 	u16 in_alarms;		/* Register values, combined, masked */
214 	u8 vid_conf;		/* Configuration register value */
215 	u8 vrm;
216 	u8 vid;			/* Register value */
217 
218 	s8 temp[3];		/* Register value */
219 	s8 temp_min[3];		/* Register value */
220 	s8 temp_max[3];		/* Register value */
221 	s8 temp_crit[3];	/* Register value */
222 	u8 temp_status[3];	/* Register value */
223 	u8 temp_alarms;		/* Register value, masked */
224 };
225 
226 /*
227  * Functions declaration
228  */
229 
230 static int pc87360_probe(struct platform_device *pdev);
231 static int __devexit pc87360_remove(struct platform_device *pdev);
232 
233 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
234 			      u8 reg);
235 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
236 				u8 reg, u8 value);
237 static void pc87360_init_device(struct platform_device *pdev,
238 				int use_thermistors);
239 static struct pc87360_data *pc87360_update_device(struct device *dev);
240 
241 /*
242  * Driver data
243  */
244 
245 static struct platform_driver pc87360_driver = {
246 	.driver = {
247 		.owner	= THIS_MODULE,
248 		.name	= "pc87360",
249 	},
250 	.probe		= pc87360_probe,
251 	.remove		= __devexit_p(pc87360_remove),
252 };
253 
254 /*
255  * Sysfs stuff
256  */
257 
258 static ssize_t show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
259 {
260 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
261 	struct pc87360_data *data = pc87360_update_device(dev);
262 	return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
263 		       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
264 }
265 static ssize_t show_fan_min(struct device *dev, struct device_attribute *devattr, char *buf)
266 {
267 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
268 	struct pc87360_data *data = pc87360_update_device(dev);
269 	return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
270 		       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
271 }
272 static ssize_t show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
273 {
274 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
275 	struct pc87360_data *data = pc87360_update_device(dev);
276 	return sprintf(buf, "%u\n",
277 		       FAN_DIV_FROM_REG(data->fan_status[attr->index]));
278 }
279 static ssize_t show_fan_status(struct device *dev, struct device_attribute *devattr, char *buf)
280 {
281 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
282 	struct pc87360_data *data = pc87360_update_device(dev);
283 	return sprintf(buf, "%u\n",
284 		       FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
285 }
286 static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr, const char *buf,
287 	size_t count)
288 {
289 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
290 	struct pc87360_data *data = dev_get_drvdata(dev);
291 	long fan_min = simple_strtol(buf, NULL, 10);
292 
293 	mutex_lock(&data->update_lock);
294 	fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[attr->index]));
295 
296 	/* If it wouldn't fit, change clock divisor */
297 	while (fan_min > 255
298 	    && (data->fan_status[attr->index] & 0x60) != 0x60) {
299 		fan_min >>= 1;
300 		data->fan[attr->index] >>= 1;
301 		data->fan_status[attr->index] += 0x20;
302 	}
303 	data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
304 	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(attr->index),
305 			    data->fan_min[attr->index]);
306 
307 	/* Write new divider, preserve alarm bits */
308 	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(attr->index),
309 			    data->fan_status[attr->index] & 0xF9);
310 	mutex_unlock(&data->update_lock);
311 
312 	return count;
313 }
314 
315 static struct sensor_device_attribute fan_input[] = {
316 	SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
317 	SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
318 	SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
319 };
320 static struct sensor_device_attribute fan_status[] = {
321 	SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
322 	SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
323 	SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
324 };
325 static struct sensor_device_attribute fan_div[] = {
326 	SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
327 	SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
328 	SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
329 };
330 static struct sensor_device_attribute fan_min[] = {
331 	SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
332 	SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
333 	SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
334 };
335 
336 #define FAN_UNIT_ATTRS(X)	\
337 	&fan_input[X].dev_attr.attr,	\
338 	&fan_status[X].dev_attr.attr,	\
339 	&fan_div[X].dev_attr.attr,	\
340 	&fan_min[X].dev_attr.attr
341 
342 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
343 {
344 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
345 	struct pc87360_data *data = pc87360_update_device(dev);
346 	return sprintf(buf, "%u\n",
347 		       PWM_FROM_REG(data->pwm[attr->index],
348 				    FAN_CONFIG_INVERT(data->fan_conf,
349 						      attr->index)));
350 }
351 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf,
352 	size_t count)
353 {
354 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
355 	struct pc87360_data *data = dev_get_drvdata(dev);
356 	long val = simple_strtol(buf, NULL, 10);
357 
358 	mutex_lock(&data->update_lock);
359 	data->pwm[attr->index] = PWM_TO_REG(val,
360 			      FAN_CONFIG_INVERT(data->fan_conf, attr->index));
361 	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
362 			    data->pwm[attr->index]);
363 	mutex_unlock(&data->update_lock);
364 	return count;
365 }
366 
367 static struct sensor_device_attribute pwm[] = {
368 	SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
369 	SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
370 	SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
371 };
372 
373 static struct attribute * pc8736x_fan_attr_array[] = {
374 	FAN_UNIT_ATTRS(0),
375 	FAN_UNIT_ATTRS(1),
376 	FAN_UNIT_ATTRS(2),
377 	&pwm[0].dev_attr.attr,
378 	&pwm[1].dev_attr.attr,
379 	&pwm[2].dev_attr.attr,
380 	NULL
381 };
382 static const struct attribute_group pc8736x_fan_group = {
383 	.attrs = pc8736x_fan_attr_array,
384 };
385 
386 static ssize_t show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
387 {
388 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
389 	struct pc87360_data *data = pc87360_update_device(dev);
390 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
391 		       data->in_vref));
392 }
393 static ssize_t show_in_min(struct device *dev, struct device_attribute *devattr, char *buf)
394 {
395 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
396 	struct pc87360_data *data = pc87360_update_device(dev);
397 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
398 		       data->in_vref));
399 }
400 static ssize_t show_in_max(struct device *dev, struct device_attribute *devattr, char *buf)
401 {
402 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
403 	struct pc87360_data *data = pc87360_update_device(dev);
404 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
405 		       data->in_vref));
406 }
407 static ssize_t show_in_status(struct device *dev, struct device_attribute *devattr, char *buf)
408 {
409 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
410 	struct pc87360_data *data = pc87360_update_device(dev);
411 	return sprintf(buf, "%u\n", data->in_status[attr->index]);
412 }
413 static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr, const char *buf,
414 	size_t count)
415 {
416 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
417 	struct pc87360_data *data = dev_get_drvdata(dev);
418 	long val = simple_strtol(buf, NULL, 10);
419 
420 	mutex_lock(&data->update_lock);
421 	data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
422 	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
423 			    data->in_min[attr->index]);
424 	mutex_unlock(&data->update_lock);
425 	return count;
426 }
427 static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr, const char *buf,
428 	size_t count)
429 {
430 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
431 	struct pc87360_data *data = dev_get_drvdata(dev);
432 	long val = simple_strtol(buf, NULL, 10);
433 
434 	mutex_lock(&data->update_lock);
435 	data->in_max[attr->index] = IN_TO_REG(val,
436 			       data->in_vref);
437 	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
438 			    data->in_max[attr->index]);
439 	mutex_unlock(&data->update_lock);
440 	return count;
441 }
442 
443 static struct sensor_device_attribute in_input[] = {
444 	SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
445 	SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
446 	SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
447 	SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
448 	SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
449 	SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
450 	SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
451 	SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
452 	SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
453 	SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
454 	SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
455 };
456 static struct sensor_device_attribute in_status[] = {
457 	SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
458 	SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
459 	SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
460 	SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
461 	SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
462 	SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
463 	SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
464 	SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
465 	SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
466 	SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
467 	SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
468 };
469 static struct sensor_device_attribute in_min[] = {
470 	SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
471 	SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
472 	SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
473 	SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
474 	SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
475 	SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
476 	SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
477 	SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
478 	SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
479 	SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
480 	SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
481 };
482 static struct sensor_device_attribute in_max[] = {
483 	SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
484 	SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
485 	SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
486 	SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
487 	SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
488 	SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
489 	SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
490 	SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
491 	SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
492 	SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
493 	SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
494 };
495 
496 /* (temp & vin) channel status register alarm bits (pdf sec.11.5.12) */
497 #define CHAN_ALM_MIN	0x02	/* min limit crossed */
498 #define CHAN_ALM_MAX	0x04	/* max limit exceeded */
499 #define TEMP_ALM_CRIT	0x08	/* temp crit exceeded (temp only) */
500 
501 /* show_in_min/max_alarm() reads data from the per-channel status
502    register (sec 11.5.12), not the vin event status registers (sec
503    11.5.2) that (legacy) show_in_alarm() resds (via data->in_alarms) */
504 
505 static ssize_t show_in_min_alarm(struct device *dev,
506 			struct device_attribute *devattr, char *buf)
507 {
508 	struct pc87360_data *data = pc87360_update_device(dev);
509 	unsigned nr = to_sensor_dev_attr(devattr)->index;
510 
511 	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
512 }
513 static ssize_t show_in_max_alarm(struct device *dev,
514 			struct device_attribute *devattr, char *buf)
515 {
516 	struct pc87360_data *data = pc87360_update_device(dev);
517 	unsigned nr = to_sensor_dev_attr(devattr)->index;
518 
519 	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
520 }
521 
522 static struct sensor_device_attribute in_min_alarm[] = {
523 	SENSOR_ATTR(in0_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 0),
524 	SENSOR_ATTR(in1_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 1),
525 	SENSOR_ATTR(in2_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 2),
526 	SENSOR_ATTR(in3_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 3),
527 	SENSOR_ATTR(in4_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 4),
528 	SENSOR_ATTR(in5_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 5),
529 	SENSOR_ATTR(in6_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 6),
530 	SENSOR_ATTR(in7_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 7),
531 	SENSOR_ATTR(in8_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 8),
532 	SENSOR_ATTR(in9_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 9),
533 	SENSOR_ATTR(in10_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 10),
534 };
535 static struct sensor_device_attribute in_max_alarm[] = {
536 	SENSOR_ATTR(in0_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 0),
537 	SENSOR_ATTR(in1_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 1),
538 	SENSOR_ATTR(in2_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 2),
539 	SENSOR_ATTR(in3_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 3),
540 	SENSOR_ATTR(in4_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 4),
541 	SENSOR_ATTR(in5_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 5),
542 	SENSOR_ATTR(in6_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 6),
543 	SENSOR_ATTR(in7_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 7),
544 	SENSOR_ATTR(in8_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 8),
545 	SENSOR_ATTR(in9_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 9),
546 	SENSOR_ATTR(in10_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 10),
547 };
548 
549 #define VIN_UNIT_ATTRS(X) \
550 	&in_input[X].dev_attr.attr,	\
551 	&in_status[X].dev_attr.attr,	\
552 	&in_min[X].dev_attr.attr,	\
553 	&in_max[X].dev_attr.attr,	\
554 	&in_min_alarm[X].dev_attr.attr,	\
555 	&in_max_alarm[X].dev_attr.attr
556 
557 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
558 {
559 	struct pc87360_data *data = pc87360_update_device(dev);
560 	return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
561 }
562 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
563 
564 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
565 {
566 	struct pc87360_data *data = dev_get_drvdata(dev);
567 	return sprintf(buf, "%u\n", data->vrm);
568 }
569 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
570 {
571 	struct pc87360_data *data = dev_get_drvdata(dev);
572 	data->vrm = simple_strtoul(buf, NULL, 10);
573 	return count;
574 }
575 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
576 
577 static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
578 {
579 	struct pc87360_data *data = pc87360_update_device(dev);
580 	return sprintf(buf, "%u\n", data->in_alarms);
581 }
582 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
583 
584 static struct attribute *pc8736x_vin_attr_array[] = {
585 	VIN_UNIT_ATTRS(0),
586 	VIN_UNIT_ATTRS(1),
587 	VIN_UNIT_ATTRS(2),
588 	VIN_UNIT_ATTRS(3),
589 	VIN_UNIT_ATTRS(4),
590 	VIN_UNIT_ATTRS(5),
591 	VIN_UNIT_ATTRS(6),
592 	VIN_UNIT_ATTRS(7),
593 	VIN_UNIT_ATTRS(8),
594 	VIN_UNIT_ATTRS(9),
595 	VIN_UNIT_ATTRS(10),
596 	&dev_attr_cpu0_vid.attr,
597 	&dev_attr_vrm.attr,
598 	&dev_attr_alarms_in.attr,
599 	NULL
600 };
601 static const struct attribute_group pc8736x_vin_group = {
602 	.attrs = pc8736x_vin_attr_array,
603 };
604 
605 static ssize_t show_therm_input(struct device *dev, struct device_attribute *devattr, char *buf)
606 {
607 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
608 	struct pc87360_data *data = pc87360_update_device(dev);
609 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
610 		       data->in_vref));
611 }
612 static ssize_t show_therm_min(struct device *dev, struct device_attribute *devattr, char *buf)
613 {
614 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
615 	struct pc87360_data *data = pc87360_update_device(dev);
616 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
617 		       data->in_vref));
618 }
619 static ssize_t show_therm_max(struct device *dev, struct device_attribute *devattr, char *buf)
620 {
621 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
622 	struct pc87360_data *data = pc87360_update_device(dev);
623 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
624 		       data->in_vref));
625 }
626 static ssize_t show_therm_crit(struct device *dev, struct device_attribute *devattr, char *buf)
627 {
628 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
629 	struct pc87360_data *data = pc87360_update_device(dev);
630 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
631 		       data->in_vref));
632 }
633 static ssize_t show_therm_status(struct device *dev, struct device_attribute *devattr, char *buf)
634 {
635 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
636 	struct pc87360_data *data = pc87360_update_device(dev);
637 	return sprintf(buf, "%u\n", data->in_status[attr->index]);
638 }
639 static ssize_t set_therm_min(struct device *dev, struct device_attribute *devattr, const char *buf,
640 	size_t count)
641 {
642 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
643 	struct pc87360_data *data = dev_get_drvdata(dev);
644 	long val = simple_strtol(buf, NULL, 10);
645 
646 	mutex_lock(&data->update_lock);
647 	data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
648 	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
649 			    data->in_min[attr->index]);
650 	mutex_unlock(&data->update_lock);
651 	return count;
652 }
653 static ssize_t set_therm_max(struct device *dev, struct device_attribute *devattr, const char *buf,
654 	size_t count)
655 {
656 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
657 	struct pc87360_data *data = dev_get_drvdata(dev);
658 	long val = simple_strtol(buf, NULL, 10);
659 
660 	mutex_lock(&data->update_lock);
661 	data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
662 	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
663 			    data->in_max[attr->index]);
664 	mutex_unlock(&data->update_lock);
665 	return count;
666 }
667 static ssize_t set_therm_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
668 	size_t count)
669 {
670 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
671 	struct pc87360_data *data = dev_get_drvdata(dev);
672 	long val = simple_strtol(buf, NULL, 10);
673 
674 	mutex_lock(&data->update_lock);
675 	data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
676 	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
677 			    data->in_crit[attr->index-11]);
678 	mutex_unlock(&data->update_lock);
679 	return count;
680 }
681 
682 /* the +11 term below reflects the fact that VLM units 11,12,13 are
683    used in the chip to measure voltage across the thermistors
684 */
685 static struct sensor_device_attribute therm_input[] = {
686 	SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0+11),
687 	SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1+11),
688 	SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2+11),
689 };
690 static struct sensor_device_attribute therm_status[] = {
691 	SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0+11),
692 	SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1+11),
693 	SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2+11),
694 };
695 static struct sensor_device_attribute therm_min[] = {
696 	SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
697 		    show_therm_min, set_therm_min, 0+11),
698 	SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
699 		    show_therm_min, set_therm_min, 1+11),
700 	SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
701 		    show_therm_min, set_therm_min, 2+11),
702 };
703 static struct sensor_device_attribute therm_max[] = {
704 	SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
705 		    show_therm_max, set_therm_max, 0+11),
706 	SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
707 		    show_therm_max, set_therm_max, 1+11),
708 	SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
709 		    show_therm_max, set_therm_max, 2+11),
710 };
711 static struct sensor_device_attribute therm_crit[] = {
712 	SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
713 		    show_therm_crit, set_therm_crit, 0+11),
714 	SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
715 		    show_therm_crit, set_therm_crit, 1+11),
716 	SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
717 		    show_therm_crit, set_therm_crit, 2+11),
718 };
719 
720 /* show_therm_min/max_alarm() reads data from the per-channel voltage
721    status register (sec 11.5.12) */
722 
723 static ssize_t show_therm_min_alarm(struct device *dev,
724 				struct device_attribute *devattr, char *buf)
725 {
726 	struct pc87360_data *data = pc87360_update_device(dev);
727 	unsigned nr = to_sensor_dev_attr(devattr)->index;
728 
729 	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
730 }
731 static ssize_t show_therm_max_alarm(struct device *dev,
732 				struct device_attribute *devattr, char *buf)
733 {
734 	struct pc87360_data *data = pc87360_update_device(dev);
735 	unsigned nr = to_sensor_dev_attr(devattr)->index;
736 
737 	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
738 }
739 static ssize_t show_therm_crit_alarm(struct device *dev,
740 				struct device_attribute *devattr, char *buf)
741 {
742 	struct pc87360_data *data = pc87360_update_device(dev);
743 	unsigned nr = to_sensor_dev_attr(devattr)->index;
744 
745 	return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
746 }
747 
748 static struct sensor_device_attribute therm_min_alarm[] = {
749 	SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
750 		    show_therm_min_alarm, NULL, 0+11),
751 	SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
752 		    show_therm_min_alarm, NULL, 1+11),
753 	SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
754 		    show_therm_min_alarm, NULL, 2+11),
755 };
756 static struct sensor_device_attribute therm_max_alarm[] = {
757 	SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
758 		    show_therm_max_alarm, NULL, 0+11),
759 	SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
760 		    show_therm_max_alarm, NULL, 1+11),
761 	SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
762 		    show_therm_max_alarm, NULL, 2+11),
763 };
764 static struct sensor_device_attribute therm_crit_alarm[] = {
765 	SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
766 		    show_therm_crit_alarm, NULL, 0+11),
767 	SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
768 		    show_therm_crit_alarm, NULL, 1+11),
769 	SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
770 		    show_therm_crit_alarm, NULL, 2+11),
771 };
772 
773 #define THERM_UNIT_ATTRS(X) \
774 	&therm_input[X].dev_attr.attr,	\
775 	&therm_status[X].dev_attr.attr,	\
776 	&therm_min[X].dev_attr.attr,	\
777 	&therm_max[X].dev_attr.attr,	\
778 	&therm_crit[X].dev_attr.attr,	\
779 	&therm_min_alarm[X].dev_attr.attr, \
780 	&therm_max_alarm[X].dev_attr.attr, \
781 	&therm_crit_alarm[X].dev_attr.attr
782 
783 static struct attribute * pc8736x_therm_attr_array[] = {
784 	THERM_UNIT_ATTRS(0),
785 	THERM_UNIT_ATTRS(1),
786 	THERM_UNIT_ATTRS(2),
787 	NULL
788 };
789 static const struct attribute_group pc8736x_therm_group = {
790 	.attrs = pc8736x_therm_attr_array,
791 };
792 
793 static ssize_t show_temp_input(struct device *dev, struct device_attribute *devattr, char *buf)
794 {
795 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
796 	struct pc87360_data *data = pc87360_update_device(dev);
797 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
798 }
799 static ssize_t show_temp_min(struct device *dev, struct device_attribute *devattr, char *buf)
800 {
801 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
802 	struct pc87360_data *data = pc87360_update_device(dev);
803 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
804 }
805 static ssize_t show_temp_max(struct device *dev, struct device_attribute *devattr, char *buf)
806 {
807 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
808 	struct pc87360_data *data = pc87360_update_device(dev);
809 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
810 }
811 static ssize_t show_temp_crit(struct device *dev, struct device_attribute *devattr, char *buf)
812 {
813 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
814 	struct pc87360_data *data = pc87360_update_device(dev);
815 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[attr->index]));
816 }
817 static ssize_t show_temp_status(struct device *dev, struct device_attribute *devattr, char *buf)
818 {
819 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
820 	struct pc87360_data *data = pc87360_update_device(dev);
821 	return sprintf(buf, "%d\n", data->temp_status[attr->index]);
822 }
823 static ssize_t set_temp_min(struct device *dev, struct device_attribute *devattr, const char *buf,
824 	size_t count)
825 {
826 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
827 	struct pc87360_data *data = dev_get_drvdata(dev);
828 	long val = simple_strtol(buf, NULL, 10);
829 
830 	mutex_lock(&data->update_lock);
831 	data->temp_min[attr->index] = TEMP_TO_REG(val);
832 	pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
833 			    data->temp_min[attr->index]);
834 	mutex_unlock(&data->update_lock);
835 	return count;
836 }
837 static ssize_t set_temp_max(struct device *dev, struct device_attribute *devattr, const char *buf,
838 	size_t count)
839 {
840 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
841 	struct pc87360_data *data = dev_get_drvdata(dev);
842 	long val = simple_strtol(buf, NULL, 10);
843 
844 	mutex_lock(&data->update_lock);
845 	data->temp_max[attr->index] = TEMP_TO_REG(val);
846 	pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
847 			    data->temp_max[attr->index]);
848 	mutex_unlock(&data->update_lock);
849 	return count;
850 }
851 static ssize_t set_temp_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
852 	size_t count)
853 {
854 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
855 	struct pc87360_data *data = dev_get_drvdata(dev);
856 	long val = simple_strtol(buf, NULL, 10);
857 
858 	mutex_lock(&data->update_lock);
859 	data->temp_crit[attr->index] = TEMP_TO_REG(val);
860 	pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
861 			    data->temp_crit[attr->index]);
862 	mutex_unlock(&data->update_lock);
863 	return count;
864 }
865 
866 static struct sensor_device_attribute temp_input[] = {
867 	SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
868 	SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
869 	SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
870 };
871 static struct sensor_device_attribute temp_status[] = {
872 	SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
873 	SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
874 	SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
875 };
876 static struct sensor_device_attribute temp_min[] = {
877 	SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
878 		    show_temp_min, set_temp_min, 0),
879 	SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
880 		    show_temp_min, set_temp_min, 1),
881 	SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
882 		    show_temp_min, set_temp_min, 2),
883 };
884 static struct sensor_device_attribute temp_max[] = {
885 	SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
886 		    show_temp_max, set_temp_max, 0),
887 	SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
888 		    show_temp_max, set_temp_max, 1),
889 	SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
890 		    show_temp_max, set_temp_max, 2),
891 };
892 static struct sensor_device_attribute temp_crit[] = {
893 	SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
894 		    show_temp_crit, set_temp_crit, 0),
895 	SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
896 		    show_temp_crit, set_temp_crit, 1),
897 	SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
898 		    show_temp_crit, set_temp_crit, 2),
899 };
900 
901 static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
902 {
903 	struct pc87360_data *data = pc87360_update_device(dev);
904 	return sprintf(buf, "%u\n", data->temp_alarms);
905 }
906 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
907 
908 /* show_temp_min/max_alarm() reads data from the per-channel status
909    register (sec 12.3.7), not the temp event status registers (sec
910    12.3.2) that show_temp_alarm() reads (via data->temp_alarms) */
911 
912 static ssize_t show_temp_min_alarm(struct device *dev,
913 			struct device_attribute *devattr, char *buf)
914 {
915 	struct pc87360_data *data = pc87360_update_device(dev);
916 	unsigned nr = to_sensor_dev_attr(devattr)->index;
917 
918 	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
919 }
920 static ssize_t show_temp_max_alarm(struct device *dev,
921 			struct device_attribute *devattr, char *buf)
922 {
923 	struct pc87360_data *data = pc87360_update_device(dev);
924 	unsigned nr = to_sensor_dev_attr(devattr)->index;
925 
926 	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
927 }
928 static ssize_t show_temp_crit_alarm(struct device *dev,
929 			struct device_attribute *devattr, char *buf)
930 {
931 	struct pc87360_data *data = pc87360_update_device(dev);
932 	unsigned nr = to_sensor_dev_attr(devattr)->index;
933 
934 	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
935 }
936 
937 static struct sensor_device_attribute temp_min_alarm[] = {
938 	SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
939 	SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
940 	SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
941 };
942 static struct sensor_device_attribute temp_max_alarm[] = {
943 	SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
944 	SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
945 	SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
946 };
947 static struct sensor_device_attribute temp_crit_alarm[] = {
948 	SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
949 	SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
950 	SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
951 };
952 
953 #define TEMP_FAULT	0x40	/* open diode */
954 static ssize_t show_temp_fault(struct device *dev,
955 			struct device_attribute *devattr, char *buf)
956 {
957 	struct pc87360_data *data = pc87360_update_device(dev);
958 	unsigned nr = to_sensor_dev_attr(devattr)->index;
959 
960 	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
961 }
962 static struct sensor_device_attribute temp_fault[] = {
963 	SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
964 	SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
965 	SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
966 };
967 
968 #define TEMP_UNIT_ATTRS(X) \
969 	&temp_input[X].dev_attr.attr,	\
970 	&temp_status[X].dev_attr.attr,	\
971 	&temp_min[X].dev_attr.attr,	\
972 	&temp_max[X].dev_attr.attr,	\
973 	&temp_crit[X].dev_attr.attr,	\
974 	&temp_min_alarm[X].dev_attr.attr, \
975 	&temp_max_alarm[X].dev_attr.attr, \
976 	&temp_crit_alarm[X].dev_attr.attr, \
977 	&temp_fault[X].dev_attr.attr
978 
979 static struct attribute * pc8736x_temp_attr_array[] = {
980 	TEMP_UNIT_ATTRS(0),
981 	TEMP_UNIT_ATTRS(1),
982 	TEMP_UNIT_ATTRS(2),
983 	/* include the few miscellaneous atts here */
984 	&dev_attr_alarms_temp.attr,
985 	NULL
986 };
987 static const struct attribute_group pc8736x_temp_group = {
988 	.attrs = pc8736x_temp_attr_array,
989 };
990 
991 static ssize_t show_name(struct device *dev,
992 			struct device_attribute *devattr, char *buf)
993 {
994 	struct pc87360_data *data = dev_get_drvdata(dev);
995 	return sprintf(buf, "%s\n", data->name);
996 }
997 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
998 
999 /*
1000  * Device detection, registration and update
1001  */
1002 
1003 static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
1004 {
1005 	u16 val;
1006 	int i;
1007 	int nrdev; /* logical device count */
1008 
1009 	/* No superio_enter */
1010 
1011 	/* Identify device */
1012 	val = force_id ? force_id : superio_inb(sioaddr, DEVID);
1013 	switch (val) {
1014 	case 0xE1: /* PC87360 */
1015 	case 0xE8: /* PC87363 */
1016 	case 0xE4: /* PC87364 */
1017 		nrdev = 1;
1018 		break;
1019 	case 0xE5: /* PC87365 */
1020 	case 0xE9: /* PC87366 */
1021 		nrdev = 3;
1022 		break;
1023 	default:
1024 		superio_exit(sioaddr);
1025 		return -ENODEV;
1026 	}
1027 	/* Remember the device id */
1028 	*devid = val;
1029 
1030 	for (i = 0; i < nrdev; i++) {
1031 		/* select logical device */
1032 		superio_outb(sioaddr, DEV, logdev[i]);
1033 
1034 		val = superio_inb(sioaddr, ACT);
1035 		if (!(val & 0x01)) {
1036 			pr_info("Device 0x%02x not activated\n", logdev[i]);
1037 			continue;
1038 		}
1039 
1040 		val = (superio_inb(sioaddr, BASE) << 8)
1041 		    | superio_inb(sioaddr, BASE + 1);
1042 		if (!val) {
1043 			pr_info("Base address not set for device 0x%02x\n",
1044 				logdev[i]);
1045 			continue;
1046 		}
1047 
1048 		addresses[i] = val;
1049 
1050 		if (i==0) { /* Fans */
1051 			confreg[0] = superio_inb(sioaddr, 0xF0);
1052 			confreg[1] = superio_inb(sioaddr, 0xF1);
1053 
1054 			pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
1055 				 (confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
1056 				 (confreg[0] >> 4) & 1);
1057 			pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
1058 				 (confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
1059 				 (confreg[0] >> 7) & 1);
1060 			pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
1061 				 confreg[1] & 1, (confreg[1] >> 1) & 1,
1062 				 (confreg[1] >> 2) & 1);
1063 		} else if (i==1) { /* Voltages */
1064 			/* Are we using thermistors? */
1065 			if (*devid == 0xE9) { /* PC87366 */
1066 				/* These registers are not logical-device
1067 				   specific, just that we won't need them if
1068 				   we don't use the VLM device */
1069 				confreg[2] = superio_inb(sioaddr, 0x2B);
1070 				confreg[3] = superio_inb(sioaddr, 0x25);
1071 
1072 				if (confreg[2] & 0x40) {
1073 					pr_info("Using thermistors for "
1074 						"temperature monitoring\n");
1075 				}
1076 				if (confreg[3] & 0xE0) {
1077 					pr_info("VID inputs routed (mode %u)\n",
1078 						confreg[3] >> 5);
1079 				}
1080 			}
1081 		}
1082 	}
1083 
1084 	superio_exit(sioaddr);
1085 	return 0;
1086 }
1087 
1088 static int __devinit pc87360_probe(struct platform_device *pdev)
1089 {
1090 	int i;
1091 	struct pc87360_data *data;
1092 	int err = 0;
1093 	const char *name = "pc87360";
1094 	int use_thermistors = 0;
1095 	struct device *dev = &pdev->dev;
1096 
1097 	if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
1098 		return -ENOMEM;
1099 
1100 	data->fannr = 2;
1101 	data->innr = 0;
1102 	data->tempnr = 0;
1103 
1104 	switch (devid) {
1105 	case 0xe8:
1106 		name = "pc87363";
1107 		break;
1108 	case 0xe4:
1109 		name = "pc87364";
1110 		data->fannr = 3;
1111 		break;
1112 	case 0xe5:
1113 		name = "pc87365";
1114 		data->fannr = extra_isa[0] ? 3 : 0;
1115 		data->innr = extra_isa[1] ? 11 : 0;
1116 		data->tempnr = extra_isa[2] ? 2 : 0;
1117 		break;
1118 	case 0xe9:
1119 		name = "pc87366";
1120 		data->fannr = extra_isa[0] ? 3 : 0;
1121 		data->innr = extra_isa[1] ? 14 : 0;
1122 		data->tempnr = extra_isa[2] ? 3 : 0;
1123 		break;
1124 	}
1125 
1126 	data->name = name;
1127 	data->valid = 0;
1128 	mutex_init(&data->lock);
1129 	mutex_init(&data->update_lock);
1130 	platform_set_drvdata(pdev, data);
1131 
1132 	for (i = 0; i < LDNI_MAX; i++) {
1133 		if (((data->address[i] = extra_isa[i]))
1134 		 && !request_region(extra_isa[i], PC87360_EXTENT,
1135 		 		    pc87360_driver.driver.name)) {
1136 			dev_err(dev, "Region 0x%x-0x%x already "
1137 				"in use!\n", extra_isa[i],
1138 				extra_isa[i]+PC87360_EXTENT-1);
1139 			for (i--; i >= 0; i--)
1140 				release_region(extra_isa[i], PC87360_EXTENT);
1141 			err = -EBUSY;
1142 			goto ERROR1;
1143 		}
1144 	}
1145 
1146 	/* Retrieve the fans configuration from Super-I/O space */
1147 	if (data->fannr)
1148 		data->fan_conf = confreg[0] | (confreg[1] << 8);
1149 
1150 	/* Use the correct reference voltage
1151 	   Unless both the VLM and the TMS logical devices agree to
1152 	   use an external Vref, the internal one is used. */
1153 	if (data->innr) {
1154 		i = pc87360_read_value(data, LD_IN, NO_BANK,
1155 				       PC87365_REG_IN_CONFIG);
1156 		if (data->tempnr) {
1157 			i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
1158 						PC87365_REG_TEMP_CONFIG);
1159 		}
1160 		data->in_vref = (i&0x02) ? 3025 : 2966;
1161 		dev_dbg(dev, "Using %s reference voltage\n",
1162 			(i&0x02) ? "external" : "internal");
1163 
1164 		data->vid_conf = confreg[3];
1165 		data->vrm = vid_which_vrm();
1166 	}
1167 
1168 	/* Fan clock dividers may be needed before any data is read */
1169 	for (i = 0; i < data->fannr; i++) {
1170 		if (FAN_CONFIG_MONITOR(data->fan_conf, i))
1171 			data->fan_status[i] = pc87360_read_value(data,
1172 					      LD_FAN, NO_BANK,
1173 					      PC87360_REG_FAN_STATUS(i));
1174 	}
1175 
1176 	if (init > 0) {
1177 		if (devid == 0xe9 && data->address[1]) /* PC87366 */
1178 			use_thermistors = confreg[2] & 0x40;
1179 
1180 		pc87360_init_device(pdev, use_thermistors);
1181 	}
1182 
1183 	/* Register all-or-nothing sysfs groups */
1184 
1185 	if (data->innr &&
1186 	    (err = sysfs_create_group(&dev->kobj,
1187 				      &pc8736x_vin_group)))
1188 		goto ERROR3;
1189 
1190 	if (data->innr == 14 &&
1191 	    (err = sysfs_create_group(&dev->kobj,
1192 				      &pc8736x_therm_group)))
1193 		goto ERROR3;
1194 
1195 	/* create device attr-files for varying sysfs groups */
1196 
1197 	if (data->tempnr) {
1198 		for (i = 0; i < data->tempnr; i++) {
1199 			if ((err = device_create_file(dev,
1200 					&temp_input[i].dev_attr))
1201 			    || (err = device_create_file(dev,
1202 					&temp_min[i].dev_attr))
1203 			    || (err = device_create_file(dev,
1204 					&temp_max[i].dev_attr))
1205 			    || (err = device_create_file(dev,
1206 					&temp_crit[i].dev_attr))
1207 			    || (err = device_create_file(dev,
1208 					&temp_status[i].dev_attr))
1209 			    || (err = device_create_file(dev,
1210 					&temp_min_alarm[i].dev_attr))
1211 			    || (err = device_create_file(dev,
1212 					&temp_max_alarm[i].dev_attr))
1213 			    || (err = device_create_file(dev,
1214 					&temp_crit_alarm[i].dev_attr))
1215 			    || (err = device_create_file(dev,
1216 					&temp_fault[i].dev_attr)))
1217 				goto ERROR3;
1218 		}
1219 		if ((err = device_create_file(dev, &dev_attr_alarms_temp)))
1220 			goto ERROR3;
1221 	}
1222 
1223 	for (i = 0; i < data->fannr; i++) {
1224 		if (FAN_CONFIG_MONITOR(data->fan_conf, i)
1225 		    && ((err = device_create_file(dev,
1226 					&fan_input[i].dev_attr))
1227 			|| (err = device_create_file(dev,
1228 					&fan_min[i].dev_attr))
1229 			|| (err = device_create_file(dev,
1230 					&fan_div[i].dev_attr))
1231 			|| (err = device_create_file(dev,
1232 					&fan_status[i].dev_attr))))
1233 			goto ERROR3;
1234 
1235 		if (FAN_CONFIG_CONTROL(data->fan_conf, i)
1236 		    && (err = device_create_file(dev, &pwm[i].dev_attr)))
1237 			goto ERROR3;
1238 	}
1239 
1240 	if ((err = device_create_file(dev, &dev_attr_name)))
1241 		goto ERROR3;
1242 
1243 	data->hwmon_dev = hwmon_device_register(dev);
1244 	if (IS_ERR(data->hwmon_dev)) {
1245 		err = PTR_ERR(data->hwmon_dev);
1246 		goto ERROR3;
1247 	}
1248 	return 0;
1249 
1250 ERROR3:
1251 	device_remove_file(dev, &dev_attr_name);
1252 	/* can still remove groups whose members were added individually */
1253 	sysfs_remove_group(&dev->kobj, &pc8736x_temp_group);
1254 	sysfs_remove_group(&dev->kobj, &pc8736x_fan_group);
1255 	sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1256 	sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1257 	for (i = 0; i < 3; i++) {
1258 		if (data->address[i]) {
1259 			release_region(data->address[i], PC87360_EXTENT);
1260 		}
1261 	}
1262 ERROR1:
1263 	kfree(data);
1264 	return err;
1265 }
1266 
1267 static int __devexit pc87360_remove(struct platform_device *pdev)
1268 {
1269 	struct pc87360_data *data = platform_get_drvdata(pdev);
1270 	int i;
1271 
1272 	hwmon_device_unregister(data->hwmon_dev);
1273 
1274 	device_remove_file(&pdev->dev, &dev_attr_name);
1275 	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_temp_group);
1276 	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_group);
1277 	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_therm_group);
1278 	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_vin_group);
1279 
1280 	for (i = 0; i < 3; i++) {
1281 		if (data->address[i]) {
1282 			release_region(data->address[i], PC87360_EXTENT);
1283 		}
1284 	}
1285 	kfree(data);
1286 
1287 	return 0;
1288 }
1289 
1290 /* ldi is the logical device index
1291    bank is for voltages and temperatures only */
1292 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1293 			      u8 reg)
1294 {
1295 	int res;
1296 
1297 	mutex_lock(&(data->lock));
1298 	if (bank != NO_BANK)
1299 		outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1300 	res = inb_p(data->address[ldi] + reg);
1301 	mutex_unlock(&(data->lock));
1302 
1303 	return res;
1304 }
1305 
1306 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1307 				u8 reg, u8 value)
1308 {
1309 	mutex_lock(&(data->lock));
1310 	if (bank != NO_BANK)
1311 		outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1312 	outb_p(value, data->address[ldi] + reg);
1313 	mutex_unlock(&(data->lock));
1314 }
1315 
1316 /* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
1317 #define CHAN_CNVRTD	0x80	/* new data ready */
1318 #define CHAN_ENA	0x01	/* enabled channel (temp or vin) */
1319 #define CHAN_ALM_ENA	0x10	/* propagate to alarms-reg ?? (chk val!) */
1320 #define CHAN_READY	(CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
1321 
1322 #define TEMP_OTS_OE	0x20	/* OTS Output Enable */
1323 #define VIN_RW1C_MASK	(CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
1324 #define TEMP_RW1C_MASK	(VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
1325 
1326 static void pc87360_init_device(struct platform_device *pdev,
1327 				int use_thermistors)
1328 {
1329 	struct pc87360_data *data = platform_get_drvdata(pdev);
1330 	int i, nr;
1331 	const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1332 	const u8 init_temp[3] = { 2, 2, 1 };
1333 	u8 reg;
1334 
1335 	if (init >= 2 && data->innr) {
1336 		reg = pc87360_read_value(data, LD_IN, NO_BANK,
1337 					 PC87365_REG_IN_CONVRATE);
1338 		dev_info(&pdev->dev, "VLM conversion set to "
1339 			 "1s period, 160us delay\n");
1340 		pc87360_write_value(data, LD_IN, NO_BANK,
1341 				    PC87365_REG_IN_CONVRATE,
1342 				    (reg & 0xC0) | 0x11);
1343 	}
1344 
1345 	nr = data->innr < 11 ? data->innr : 11;
1346 	for (i = 0; i < nr; i++) {
1347 		reg = pc87360_read_value(data, LD_IN, i,
1348 					 PC87365_REG_IN_STATUS);
1349 		dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
1350 		if (init >= init_in[i]) {
1351 			/* Forcibly enable voltage channel */
1352 			if (!(reg & CHAN_ENA)) {
1353 				dev_dbg(&pdev->dev, "Forcibly "
1354 					"enabling in%d\n", i);
1355 				pc87360_write_value(data, LD_IN, i,
1356 						    PC87365_REG_IN_STATUS,
1357 						    (reg & 0x68) | 0x87);
1358 			}
1359 		}
1360 	}
1361 
1362 	/* We can't blindly trust the Super-I/O space configuration bit,
1363 	   most BIOS won't set it properly */
1364 	dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
1365 	for (i = 11; i < data->innr; i++) {
1366 		reg = pc87360_read_value(data, LD_IN, i,
1367 					 PC87365_REG_TEMP_STATUS);
1368 		use_thermistors = use_thermistors || (reg & CHAN_ENA);
1369 		/* thermistors are temp[4-6], measured on vin[11-14] */
1370 		dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
1371 	}
1372 	dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
1373 
1374 	i = use_thermistors ? 2 : 0;
1375 	for (; i < data->tempnr; i++) {
1376 		reg = pc87360_read_value(data, LD_TEMP, i,
1377 					 PC87365_REG_TEMP_STATUS);
1378 		dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i+1, reg);
1379 		if (init >= init_temp[i]) {
1380 			/* Forcibly enable temperature channel */
1381 			if (!(reg & CHAN_ENA)) {
1382 				dev_dbg(&pdev->dev, "Forcibly "
1383 					"enabling temp%d\n", i+1);
1384 				pc87360_write_value(data, LD_TEMP, i,
1385 						    PC87365_REG_TEMP_STATUS,
1386 						    0xCF);
1387 			}
1388 		}
1389 	}
1390 
1391 	if (use_thermistors) {
1392 		for (i = 11; i < data->innr; i++) {
1393 			if (init >= init_in[i]) {
1394 				/* The pin may already be used by thermal
1395 				   diodes */
1396 				reg = pc87360_read_value(data, LD_TEMP,
1397 				      (i-11)/2, PC87365_REG_TEMP_STATUS);
1398 				if (reg & CHAN_ENA) {
1399 					dev_dbg(&pdev->dev, "Skipping "
1400 						"temp%d, pin already in use "
1401 						"by temp%d\n", i-7, (i-11)/2);
1402 					continue;
1403 				}
1404 
1405 				/* Forcibly enable thermistor channel */
1406 				reg = pc87360_read_value(data, LD_IN, i,
1407 							 PC87365_REG_IN_STATUS);
1408 				if (!(reg & CHAN_ENA)) {
1409 					dev_dbg(&pdev->dev, "Forcibly "
1410 						"enabling temp%d\n", i-7);
1411 					pc87360_write_value(data, LD_IN, i,
1412 						PC87365_REG_TEMP_STATUS,
1413 						(reg & 0x60) | 0x8F);
1414 				}
1415 			}
1416 		}
1417 	}
1418 
1419 	if (data->innr) {
1420 		reg = pc87360_read_value(data, LD_IN, NO_BANK,
1421 					 PC87365_REG_IN_CONFIG);
1422 		dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
1423 		if (reg & CHAN_ENA) {
1424 			dev_dbg(&pdev->dev, "Forcibly "
1425 				"enabling monitoring (VLM)\n");
1426 			pc87360_write_value(data, LD_IN, NO_BANK,
1427 					    PC87365_REG_IN_CONFIG,
1428 					    reg & 0xFE);
1429 		}
1430 	}
1431 
1432 	if (data->tempnr) {
1433 		reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1434 					 PC87365_REG_TEMP_CONFIG);
1435 		dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
1436 		if (reg & CHAN_ENA) {
1437 			dev_dbg(&pdev->dev, "Forcibly enabling "
1438 				"monitoring (TMS)\n");
1439 			pc87360_write_value(data, LD_TEMP, NO_BANK,
1440 					    PC87365_REG_TEMP_CONFIG,
1441 					    reg & 0xFE);
1442 		}
1443 
1444 		if (init >= 2) {
1445 			/* Chip config as documented by National Semi. */
1446 			pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1447 			/* We voluntarily omit the bank here, in case the
1448 			   sequence itself matters. It shouldn't be a problem,
1449 			   since nobody else is supposed to access the
1450 			   device at that point. */
1451 			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1452 			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1453 			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1454 			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1455 		}
1456 	}
1457 }
1458 
1459 static void pc87360_autodiv(struct device *dev, int nr)
1460 {
1461 	struct pc87360_data *data = dev_get_drvdata(dev);
1462 	u8 old_min = data->fan_min[nr];
1463 
1464 	/* Increase clock divider if needed and possible */
1465 	if ((data->fan_status[nr] & 0x04) /* overflow flag */
1466 	 || (data->fan[nr] >= 224)) { /* next to overflow */
1467 		if ((data->fan_status[nr] & 0x60) != 0x60) {
1468 			data->fan_status[nr] += 0x20;
1469 			data->fan_min[nr] >>= 1;
1470 			data->fan[nr] >>= 1;
1471 			dev_dbg(dev, "Increasing "
1472 				"clock divider to %d for fan %d\n",
1473 				FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1474 		}
1475 	} else {
1476 		/* Decrease clock divider if possible */
1477 		while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1478 		 && data->fan[nr] < 85 /* bad accuracy */
1479 		 && (data->fan_status[nr] & 0x60) != 0x00) {
1480 			data->fan_status[nr] -= 0x20;
1481 			data->fan_min[nr] <<= 1;
1482 			data->fan[nr] <<= 1;
1483 			dev_dbg(dev, "Decreasing "
1484 				"clock divider to %d for fan %d\n",
1485 				FAN_DIV_FROM_REG(data->fan_status[nr]),
1486 				nr+1);
1487 		}
1488 	}
1489 
1490 	/* Write new fan min if it changed */
1491 	if (old_min != data->fan_min[nr]) {
1492 		pc87360_write_value(data, LD_FAN, NO_BANK,
1493 				    PC87360_REG_FAN_MIN(nr),
1494 				    data->fan_min[nr]);
1495 	}
1496 }
1497 
1498 static struct pc87360_data *pc87360_update_device(struct device *dev)
1499 {
1500 	struct pc87360_data *data = dev_get_drvdata(dev);
1501 	u8 i;
1502 
1503 	mutex_lock(&data->update_lock);
1504 
1505 	if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1506 		dev_dbg(dev, "Data update\n");
1507 
1508 		/* Fans */
1509 		for (i = 0; i < data->fannr; i++) {
1510 			if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1511 				data->fan_status[i] =
1512 					pc87360_read_value(data, LD_FAN,
1513 					NO_BANK, PC87360_REG_FAN_STATUS(i));
1514 				data->fan[i] = pc87360_read_value(data, LD_FAN,
1515 					       NO_BANK, PC87360_REG_FAN(i));
1516 				data->fan_min[i] = pc87360_read_value(data,
1517 						   LD_FAN, NO_BANK,
1518 						   PC87360_REG_FAN_MIN(i));
1519 				/* Change clock divider if needed */
1520 				pc87360_autodiv(dev, i);
1521 				/* Clear bits and write new divider */
1522 				pc87360_write_value(data, LD_FAN, NO_BANK,
1523 						    PC87360_REG_FAN_STATUS(i),
1524 						    data->fan_status[i]);
1525 			}
1526 			if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1527 				data->pwm[i] = pc87360_read_value(data, LD_FAN,
1528 					       NO_BANK, PC87360_REG_PWM(i));
1529 		}
1530 
1531 		/* Voltages */
1532 		for (i = 0; i < data->innr; i++) {
1533 			data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1534 					     PC87365_REG_IN_STATUS);
1535 			/* Clear bits */
1536 			pc87360_write_value(data, LD_IN, i,
1537 					    PC87365_REG_IN_STATUS,
1538 					    data->in_status[i]);
1539 			if ((data->in_status[i] & CHAN_READY) == CHAN_READY) {
1540 				data->in[i] = pc87360_read_value(data, LD_IN,
1541 					      i, PC87365_REG_IN);
1542 			}
1543 			if (data->in_status[i] & CHAN_ENA) {
1544 				data->in_min[i] = pc87360_read_value(data,
1545 						  LD_IN, i,
1546 						  PC87365_REG_IN_MIN);
1547 				data->in_max[i] = pc87360_read_value(data,
1548 						  LD_IN, i,
1549 						  PC87365_REG_IN_MAX);
1550 				if (i >= 11)
1551 					data->in_crit[i-11] =
1552 						pc87360_read_value(data, LD_IN,
1553 						i, PC87365_REG_TEMP_CRIT);
1554 			}
1555 		}
1556 		if (data->innr) {
1557 			data->in_alarms = pc87360_read_value(data, LD_IN,
1558 					  NO_BANK, PC87365_REG_IN_ALARMS1)
1559 					| ((pc87360_read_value(data, LD_IN,
1560 					    NO_BANK, PC87365_REG_IN_ALARMS2)
1561 					    & 0x07) << 8);
1562 			data->vid = (data->vid_conf & 0xE0) ?
1563 				    pc87360_read_value(data, LD_IN,
1564 				    NO_BANK, PC87365_REG_VID) : 0x1F;
1565 		}
1566 
1567 		/* Temperatures */
1568 		for (i = 0; i < data->tempnr; i++) {
1569 			data->temp_status[i] = pc87360_read_value(data,
1570 					       LD_TEMP, i,
1571 					       PC87365_REG_TEMP_STATUS);
1572 			/* Clear bits */
1573 			pc87360_write_value(data, LD_TEMP, i,
1574 					    PC87365_REG_TEMP_STATUS,
1575 					    data->temp_status[i]);
1576 			if ((data->temp_status[i] & CHAN_READY) == CHAN_READY) {
1577 				data->temp[i] = pc87360_read_value(data,
1578 						LD_TEMP, i,
1579 						PC87365_REG_TEMP);
1580 			}
1581 			if (data->temp_status[i] & CHAN_ENA) {
1582 				data->temp_min[i] = pc87360_read_value(data,
1583 						    LD_TEMP, i,
1584 						    PC87365_REG_TEMP_MIN);
1585 				data->temp_max[i] = pc87360_read_value(data,
1586 						    LD_TEMP, i,
1587 						    PC87365_REG_TEMP_MAX);
1588 				data->temp_crit[i] = pc87360_read_value(data,
1589 						     LD_TEMP, i,
1590 						     PC87365_REG_TEMP_CRIT);
1591 			}
1592 		}
1593 		if (data->tempnr) {
1594 			data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1595 					    NO_BANK, PC87365_REG_TEMP_ALARMS)
1596 					    & 0x3F;
1597 		}
1598 
1599 		data->last_updated = jiffies;
1600 		data->valid = 1;
1601 	}
1602 
1603 	mutex_unlock(&data->update_lock);
1604 
1605 	return data;
1606 }
1607 
1608 static int __init pc87360_device_add(unsigned short address)
1609 {
1610 	struct resource res[3];
1611 	int err, i, res_count;
1612 
1613 	pdev = platform_device_alloc("pc87360", address);
1614 	if (!pdev) {
1615 		err = -ENOMEM;
1616 		pr_err("Device allocation failed\n");
1617 		goto exit;
1618 	}
1619 
1620 	memset(res, 0, 3 * sizeof(struct resource));
1621 	res_count = 0;
1622 	for (i = 0; i < 3; i++) {
1623 		if (!extra_isa[i])
1624 			continue;
1625 		res[res_count].start = extra_isa[i];
1626 		res[res_count].end = extra_isa[i] + PC87360_EXTENT - 1;
1627 		res[res_count].name = "pc87360",
1628 		res[res_count].flags = IORESOURCE_IO,
1629 
1630 		err = acpi_check_resource_conflict(&res[res_count]);
1631 		if (err)
1632 			goto exit_device_put;
1633 
1634 		res_count++;
1635 	}
1636 
1637 	err = platform_device_add_resources(pdev, res, res_count);
1638 	if (err) {
1639 		pr_err("Device resources addition failed (%d)\n", err);
1640 		goto exit_device_put;
1641 	}
1642 
1643 	err = platform_device_add(pdev);
1644 	if (err) {
1645 		pr_err("Device addition failed (%d)\n", err);
1646 		goto exit_device_put;
1647 	}
1648 
1649 	return 0;
1650 
1651 exit_device_put:
1652 	platform_device_put(pdev);
1653 exit:
1654 	return err;
1655 }
1656 
1657 static int __init pc87360_init(void)
1658 {
1659 	int err, i;
1660 	unsigned short address = 0;
1661 
1662 	if (pc87360_find(0x2e, &devid, extra_isa)
1663 	 && pc87360_find(0x4e, &devid, extra_isa)) {
1664 		pr_warn("PC8736x not detected, module not inserted\n");
1665 		return -ENODEV;
1666 	}
1667 
1668 	/* Arbitrarily pick one of the addresses */
1669 	for (i = 0; i < 3; i++) {
1670 		if (extra_isa[i] != 0x0000) {
1671 			address = extra_isa[i];
1672 			break;
1673 		}
1674 	}
1675 
1676 	if (address == 0x0000) {
1677 		pr_warn("No active logical device, module not inserted\n");
1678 		return -ENODEV;
1679 	}
1680 
1681 	err = platform_driver_register(&pc87360_driver);
1682 	if (err)
1683 		goto exit;
1684 
1685 	/* Sets global pdev as a side effect */
1686 	err = pc87360_device_add(address);
1687 	if (err)
1688 		goto exit_driver;
1689 
1690 	return 0;
1691 
1692  exit_driver:
1693 	platform_driver_unregister(&pc87360_driver);
1694  exit:
1695 	return err;
1696 }
1697 
1698 static void __exit pc87360_exit(void)
1699 {
1700 	platform_device_unregister(pdev);
1701 	platform_driver_unregister(&pc87360_driver);
1702 }
1703 
1704 
1705 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1706 MODULE_DESCRIPTION("PC8736x hardware monitor");
1707 MODULE_LICENSE("GPL");
1708 
1709 module_init(pc87360_init);
1710 module_exit(pc87360_exit);
1711