[PATCH] hwmon: tag super-i/o find functions __init
[linux-2.6.git] / drivers / hwmon / pc87360.c
1 /*
2  *  pc87360.c - Part of lm_sensors, Linux kernel modules
3  *              for hardware monitoring
4  *  Copyright (C) 2004 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 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/slab.h>
39 #include <linux/jiffies.h>
40 #include <linux/i2c.h>
41 #include <linux/i2c-isa.h>
42 #include <linux/i2c-vid.h>
43 #include <linux/hwmon.h>
44 #include <linux/err.h>
45 #include <asm/io.h>
46
47 static u8 devid;
48 static unsigned short address;
49 static unsigned short extra_isa[3];
50 static u8 confreg[4];
51
52 enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
53
54 static int init = 1;
55 module_param(init, int, 0);
56 MODULE_PARM_DESC(init,
57  "Chip initialization level:\n"
58  " 0: None\n"
59  "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
60  " 2: Forcibly enable all voltage and temperature channels, except in9\n"
61  " 3: Forcibly enable all voltage and temperature channels, including in9");
62
63 /*
64  * Super-I/O registers and operations
65  */
66
67 #define DEV     0x07    /* Register: Logical device select */
68 #define DEVID   0x20    /* Register: Device ID */
69 #define ACT     0x30    /* Register: Device activation */
70 #define BASE    0x60    /* Register: Base address */
71
72 #define FSCM    0x09    /* Logical device: fans */
73 #define VLM     0x0d    /* Logical device: voltages */
74 #define TMS     0x0e    /* Logical device: temperatures */
75 static const u8 logdev[3] = { FSCM, VLM, TMS };
76
77 #define LD_FAN          0
78 #define LD_IN           1
79 #define LD_TEMP         2
80
81 static inline void superio_outb(int sioaddr, int reg, int val)
82 {
83         outb(reg, sioaddr);
84         outb(val, sioaddr+1);
85 }
86
87 static inline int superio_inb(int sioaddr, int reg)
88 {
89         outb(reg, sioaddr);
90         return inb(sioaddr+1);
91 }
92
93 static inline void superio_exit(int sioaddr)
94 {
95         outb(0x02, sioaddr);
96         outb(0x02, sioaddr+1);
97 }
98
99 /*
100  * Logical devices
101  */
102
103 #define PC87360_EXTENT          0x10
104 #define PC87365_REG_BANK        0x09
105 #define NO_BANK                 0xff
106
107 /*
108  * Fan registers and conversions
109  */
110
111 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
112 #define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
113 #define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
114 #define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
115 #define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
116 #define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
117
118 #define FAN_FROM_REG(val,div)           ((val) == 0 ? 0: \
119                                          480000 / ((val)*(div)))
120 #define FAN_TO_REG(val,div)             ((val) <= 100 ? 0 : \
121                                          480000 / ((val)*(div)))
122 #define FAN_DIV_FROM_REG(val)           (1 << ((val >> 5) & 0x03))
123 #define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
124
125 #define FAN_CONFIG_MONITOR(val,nr)      (((val) >> (2 + nr * 3)) & 1)
126 #define FAN_CONFIG_CONTROL(val,nr)      (((val) >> (3 + nr * 3)) & 1)
127 #define FAN_CONFIG_INVERT(val,nr)       (((val) >> (4 + nr * 3)) & 1)
128
129 #define PWM_FROM_REG(val,inv)           ((inv) ? 255 - (val) : (val))
130 static inline u8 PWM_TO_REG(int val, int inv)
131 {
132         if (inv)
133                 val = 255 - val;
134         if (val < 0)
135                 return 0;
136         if (val > 255)
137                 return 255;
138         return val;
139 }
140
141 /*
142  * Voltage registers and conversions
143  */
144
145 #define PC87365_REG_IN_CONVRATE         0x07
146 #define PC87365_REG_IN_CONFIG           0x08
147 #define PC87365_REG_IN                  0x0B
148 #define PC87365_REG_IN_MIN              0x0D
149 #define PC87365_REG_IN_MAX              0x0C
150 #define PC87365_REG_IN_STATUS           0x0A
151 #define PC87365_REG_IN_ALARMS1          0x00
152 #define PC87365_REG_IN_ALARMS2          0x01
153 #define PC87365_REG_VID                 0x06
154
155 #define IN_FROM_REG(val,ref)            (((val) * (ref) + 128) / 256)
156 #define IN_TO_REG(val,ref)              ((val) < 0 ? 0 : \
157                                          (val)*256 >= (ref)*255 ? 255: \
158                                          ((val) * 256 + (ref)/2) / (ref))
159
160 /*
161  * Temperature registers and conversions
162  */
163
164 #define PC87365_REG_TEMP_CONFIG         0x08
165 #define PC87365_REG_TEMP                0x0B
166 #define PC87365_REG_TEMP_MIN            0x0D
167 #define PC87365_REG_TEMP_MAX            0x0C
168 #define PC87365_REG_TEMP_CRIT           0x0E
169 #define PC87365_REG_TEMP_STATUS         0x0A
170 #define PC87365_REG_TEMP_ALARMS         0x00
171
172 #define TEMP_FROM_REG(val)              ((val) * 1000)
173 #define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
174                                          (val) > 127000 ? 127 : \
175                                          (val) < 0 ? ((val) - 500) / 1000 : \
176                                          ((val) + 500) / 1000)
177
178 /*
179  * Client data (each client gets its own)
180  */
181
182 struct pc87360_data {
183         struct i2c_client client;
184         struct class_device *class_dev;
185         struct semaphore lock;
186         struct semaphore update_lock;
187         char valid;             /* !=0 if following fields are valid */
188         unsigned long last_updated;     /* In jiffies */
189
190         int address[3];
191
192         u8 fannr, innr, tempnr;
193
194         u8 fan[3];              /* Register value */
195         u8 fan_min[3];          /* Register value */
196         u8 fan_status[3];       /* Register value */
197         u8 pwm[3];              /* Register value */
198         u16 fan_conf;           /* Configuration register values, combined */
199
200         u16 in_vref;            /* 1 mV/bit */
201         u8 in[14];              /* Register value */
202         u8 in_min[14];          /* Register value */
203         u8 in_max[14];          /* Register value */
204         u8 in_crit[3];          /* Register value */
205         u8 in_status[14];       /* Register value */
206         u16 in_alarms;          /* Register values, combined, masked */
207         u8 vid_conf;            /* Configuration register value */
208         u8 vrm;
209         u8 vid;                 /* Register value */
210
211         s8 temp[3];             /* Register value */
212         s8 temp_min[3];         /* Register value */
213         s8 temp_max[3];         /* Register value */
214         s8 temp_crit[3];        /* Register value */
215         u8 temp_status[3];      /* Register value */
216         u8 temp_alarms;         /* Register value, masked */
217 };
218
219 /*
220  * Functions declaration
221  */
222
223 static int pc87360_detect(struct i2c_adapter *adapter);
224 static int pc87360_detach_client(struct i2c_client *client);
225
226 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
227                               u8 reg);
228 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
229                                 u8 reg, u8 value);
230 static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
231 static struct pc87360_data *pc87360_update_device(struct device *dev);
232
233 /*
234  * Driver data (common to all clients)
235  */
236
237 static struct i2c_driver pc87360_driver = {
238         .owner          = THIS_MODULE,
239         .name           = "pc87360",
240         .attach_adapter = pc87360_detect,
241         .detach_client  = pc87360_detach_client,
242 };
243
244 /*
245  * Sysfs stuff
246  */
247
248 static ssize_t set_fan_min(struct device *dev, const char *buf,
249         size_t count, int nr)
250 {
251         struct i2c_client *client = to_i2c_client(dev);
252         struct pc87360_data *data = i2c_get_clientdata(client);
253         long fan_min = simple_strtol(buf, NULL, 10);
254
255         down(&data->update_lock);
256         fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
257
258         /* If it wouldn't fit, change clock divisor */
259         while (fan_min > 255
260             && (data->fan_status[nr] & 0x60) != 0x60) {
261                 fan_min >>= 1;
262                 data->fan[nr] >>= 1;
263                 data->fan_status[nr] += 0x20;
264         }
265         data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
266         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
267                             data->fan_min[nr]);
268
269         /* Write new divider, preserve alarm bits */
270         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
271                             data->fan_status[nr] & 0xF9);
272         up(&data->update_lock);
273
274         return count;
275 }
276
277 #define show_and_set_fan(offset) \
278 static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
279 { \
280         struct pc87360_data *data = pc87360_update_device(dev); \
281         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[offset-1], \
282                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
283 } \
284 static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
285 { \
286         struct pc87360_data *data = pc87360_update_device(dev); \
287         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[offset-1], \
288                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
289 } \
290 static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \
291 { \
292         struct pc87360_data *data = pc87360_update_device(dev); \
293         return sprintf(buf, "%u\n", \
294                        FAN_DIV_FROM_REG(data->fan_status[offset-1])); \
295 } \
296 static ssize_t show_fan##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
297 { \
298         struct pc87360_data *data = pc87360_update_device(dev); \
299         return sprintf(buf, "%u\n", \
300                        FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
301 } \
302 static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
303         size_t count) \
304 { \
305         return set_fan_min(dev, buf, count, offset-1); \
306 } \
307 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
308         show_fan##offset##_input, NULL); \
309 static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
310         show_fan##offset##_min, set_fan##offset##_min); \
311 static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
312         show_fan##offset##_div, NULL); \
313 static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
314         show_fan##offset##_status, NULL);
315 show_and_set_fan(1)
316 show_and_set_fan(2)
317 show_and_set_fan(3)
318
319 #define show_and_set_pwm(offset) \
320 static ssize_t show_pwm##offset(struct device *dev, struct device_attribute *attr, char *buf) \
321 { \
322         struct pc87360_data *data = pc87360_update_device(dev); \
323         return sprintf(buf, "%u\n", \
324                        PWM_FROM_REG(data->pwm[offset-1], \
325                                     FAN_CONFIG_INVERT(data->fan_conf, \
326                                                       offset-1))); \
327 } \
328 static ssize_t set_pwm##offset(struct device *dev, struct device_attribute *attr, const char *buf, \
329         size_t count) \
330 { \
331         struct i2c_client *client = to_i2c_client(dev); \
332         struct pc87360_data *data = i2c_get_clientdata(client); \
333         long val = simple_strtol(buf, NULL, 10); \
334  \
335         down(&data->update_lock); \
336         data->pwm[offset-1] = PWM_TO_REG(val, \
337                               FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
338         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
339                             data->pwm[offset-1]); \
340         up(&data->update_lock); \
341         return count; \
342 } \
343 static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
344         show_pwm##offset, set_pwm##offset);
345 show_and_set_pwm(1)
346 show_and_set_pwm(2)
347 show_and_set_pwm(3)
348
349 #define show_and_set_in(offset) \
350 static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
351 { \
352         struct pc87360_data *data = pc87360_update_device(dev); \
353         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
354                        data->in_vref)); \
355 } \
356 static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
357 { \
358         struct pc87360_data *data = pc87360_update_device(dev); \
359         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
360                        data->in_vref)); \
361 } \
362 static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
363 { \
364         struct pc87360_data *data = pc87360_update_device(dev); \
365         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
366                        data->in_vref)); \
367 } \
368 static ssize_t show_in##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
369 { \
370         struct pc87360_data *data = pc87360_update_device(dev); \
371         return sprintf(buf, "%u\n", data->in_status[offset]); \
372 } \
373 static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
374         size_t count) \
375 { \
376         struct i2c_client *client = to_i2c_client(dev); \
377         struct pc87360_data *data = i2c_get_clientdata(client); \
378         long val = simple_strtol(buf, NULL, 10); \
379  \
380         down(&data->update_lock); \
381         data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
382         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
383                             data->in_min[offset]); \
384         up(&data->update_lock); \
385         return count; \
386 } \
387 static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
388         size_t count) \
389 { \
390         struct i2c_client *client = to_i2c_client(dev); \
391         struct pc87360_data *data = i2c_get_clientdata(client); \
392         long val = simple_strtol(buf, NULL, 10); \
393  \
394         down(&data->update_lock); \
395         data->in_max[offset] = IN_TO_REG(val, \
396                                data->in_vref); \
397         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
398                             data->in_max[offset]); \
399         up(&data->update_lock); \
400         return count; \
401 } \
402 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
403         show_in##offset##_input, NULL); \
404 static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
405         show_in##offset##_min, set_in##offset##_min); \
406 static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
407         show_in##offset##_max, set_in##offset##_max); \
408 static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
409         show_in##offset##_status, NULL);
410 show_and_set_in(0)
411 show_and_set_in(1)
412 show_and_set_in(2)
413 show_and_set_in(3)
414 show_and_set_in(4)
415 show_and_set_in(5)
416 show_and_set_in(6)
417 show_and_set_in(7)
418 show_and_set_in(8)
419 show_and_set_in(9)
420 show_and_set_in(10)
421
422 #define show_and_set_therm(offset) \
423 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
424 { \
425         struct pc87360_data *data = pc87360_update_device(dev); \
426         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset+7], \
427                        data->in_vref)); \
428 } \
429 static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
430 { \
431         struct pc87360_data *data = pc87360_update_device(dev); \
432         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset+7], \
433                        data->in_vref)); \
434 } \
435 static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
436 { \
437         struct pc87360_data *data = pc87360_update_device(dev); \
438         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset+7], \
439                        data->in_vref)); \
440 } \
441 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
442 { \
443         struct pc87360_data *data = pc87360_update_device(dev); \
444         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[offset-4], \
445                        data->in_vref)); \
446 } \
447 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
448 { \
449         struct pc87360_data *data = pc87360_update_device(dev); \
450         return sprintf(buf, "%u\n", data->in_status[offset+7]); \
451 } \
452 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
453         size_t count) \
454 { \
455         struct i2c_client *client = to_i2c_client(dev); \
456         struct pc87360_data *data = i2c_get_clientdata(client); \
457         long val = simple_strtol(buf, NULL, 10); \
458  \
459         down(&data->update_lock); \
460         data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
461         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
462                             data->in_min[offset+7]); \
463         up(&data->update_lock); \
464         return count; \
465 } \
466 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
467         size_t count) \
468 { \
469         struct i2c_client *client = to_i2c_client(dev); \
470         struct pc87360_data *data = i2c_get_clientdata(client); \
471         long val = simple_strtol(buf, NULL, 10); \
472  \
473         down(&data->update_lock); \
474         data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
475         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
476                             data->in_max[offset+7]); \
477         up(&data->update_lock); \
478         return count; \
479 } \
480 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
481         size_t count) \
482 { \
483         struct i2c_client *client = to_i2c_client(dev); \
484         struct pc87360_data *data = i2c_get_clientdata(client); \
485         long val = simple_strtol(buf, NULL, 10); \
486  \
487         down(&data->update_lock); \
488         data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
489         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
490                             data->in_crit[offset-4]); \
491         up(&data->update_lock); \
492         return count; \
493 } \
494 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
495         show_temp##offset##_input, NULL); \
496 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
497         show_temp##offset##_min, set_temp##offset##_min); \
498 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
499         show_temp##offset##_max, set_temp##offset##_max); \
500 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
501         show_temp##offset##_crit, set_temp##offset##_crit); \
502 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
503         show_temp##offset##_status, NULL);
504 show_and_set_therm(4)
505 show_and_set_therm(5)
506 show_and_set_therm(6)
507
508 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
509 {
510         struct pc87360_data *data = pc87360_update_device(dev);
511         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
512 }
513 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
514
515 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
516 {
517         struct pc87360_data *data = pc87360_update_device(dev);
518         return sprintf(buf, "%u\n", data->vrm);
519 }
520 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
521 {
522         struct i2c_client *client = to_i2c_client(dev);
523         struct pc87360_data *data = i2c_get_clientdata(client);
524         data->vrm = simple_strtoul(buf, NULL, 10);
525         return count;
526 }
527 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
528
529 static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
530 {
531         struct pc87360_data *data = pc87360_update_device(dev);
532         return sprintf(buf, "%u\n", data->in_alarms);
533 }
534 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
535
536 #define show_and_set_temp(offset) \
537 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
538 { \
539         struct pc87360_data *data = pc87360_update_device(dev); \
540         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
541 } \
542 static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
543 { \
544         struct pc87360_data *data = pc87360_update_device(dev); \
545         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
546 } \
547 static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
548 { \
549         struct pc87360_data *data = pc87360_update_device(dev); \
550         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
551 }\
552 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
553 { \
554         struct pc87360_data *data = pc87360_update_device(dev); \
555         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
556 }\
557 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
558 { \
559         struct pc87360_data *data = pc87360_update_device(dev); \
560         return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
561 }\
562 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
563         size_t count) \
564 { \
565         struct i2c_client *client = to_i2c_client(dev); \
566         struct pc87360_data *data = i2c_get_clientdata(client); \
567         long val = simple_strtol(buf, NULL, 10); \
568  \
569         down(&data->update_lock); \
570         data->temp_min[offset-1] = TEMP_TO_REG(val); \
571         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
572                             data->temp_min[offset-1]); \
573         up(&data->update_lock); \
574         return count; \
575 } \
576 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
577         size_t count) \
578 { \
579         struct i2c_client *client = to_i2c_client(dev); \
580         struct pc87360_data *data = i2c_get_clientdata(client); \
581         long val = simple_strtol(buf, NULL, 10); \
582  \
583         down(&data->update_lock); \
584         data->temp_max[offset-1] = TEMP_TO_REG(val); \
585         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
586                             data->temp_max[offset-1]); \
587         up(&data->update_lock); \
588         return count; \
589 } \
590 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
591         size_t count) \
592 { \
593         struct i2c_client *client = to_i2c_client(dev); \
594         struct pc87360_data *data = i2c_get_clientdata(client); \
595         long val = simple_strtol(buf, NULL, 10); \
596  \
597         down(&data->update_lock); \
598         data->temp_crit[offset-1] = TEMP_TO_REG(val); \
599         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
600                             data->temp_crit[offset-1]); \
601         up(&data->update_lock); \
602         return count; \
603 } \
604 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
605         show_temp##offset##_input, NULL); \
606 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
607         show_temp##offset##_min, set_temp##offset##_min); \
608 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
609         show_temp##offset##_max, set_temp##offset##_max); \
610 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
611         show_temp##offset##_crit, set_temp##offset##_crit); \
612 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
613         show_temp##offset##_status, NULL);
614 show_and_set_temp(1)
615 show_and_set_temp(2)
616 show_and_set_temp(3)
617
618 static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
619 {
620         struct pc87360_data *data = pc87360_update_device(dev);
621         return sprintf(buf, "%u\n", data->temp_alarms);
622 }
623 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
624
625 /*
626  * Device detection, registration and update
627  */
628
629 static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
630 {
631         u16 val;
632         int i;
633         int nrdev; /* logical device count */
634
635         /* No superio_enter */
636
637         /* Identify device */
638         val = superio_inb(sioaddr, DEVID);
639         switch (val) {
640         case 0xE1: /* PC87360 */
641         case 0xE8: /* PC87363 */
642         case 0xE4: /* PC87364 */
643                 nrdev = 1;
644                 break;
645         case 0xE5: /* PC87365 */
646         case 0xE9: /* PC87366 */
647                 nrdev = 3;
648                 break;
649         default:
650                 superio_exit(sioaddr);
651                 return -ENODEV;
652         }
653         /* Remember the device id */
654         *devid = val;
655
656         for (i = 0; i < nrdev; i++) {
657                 /* select logical device */
658                 superio_outb(sioaddr, DEV, logdev[i]);
659
660                 val = superio_inb(sioaddr, ACT);
661                 if (!(val & 0x01)) {
662                         printk(KERN_INFO "pc87360: Device 0x%02x not "
663                                "activated\n", logdev[i]);
664                         continue;
665                 }
666
667                 val = (superio_inb(sioaddr, BASE) << 8)
668                     | superio_inb(sioaddr, BASE + 1);
669                 if (!val) {
670                         printk(KERN_INFO "pc87360: Base address not set for "
671                                "device 0x%02x\n", logdev[i]);
672                         continue;
673                 }
674
675                 addresses[i] = val;
676
677                 if (i==0) { /* Fans */
678                         confreg[0] = superio_inb(sioaddr, 0xF0);
679                         confreg[1] = superio_inb(sioaddr, 0xF1);
680
681 #ifdef DEBUG
682                         printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
683                                "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
684                                (confreg[0]>>3)&1, (confreg[0]>>4)&1);
685                         printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
686                                "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
687                                (confreg[0]>>6)&1, (confreg[0]>>7)&1);
688                         printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
689                                "ctrl=%d inv=%d\n", confreg[1]&1,
690                                (confreg[1]>>1)&1, (confreg[1]>>2)&1);
691 #endif
692                 } else if (i==1) { /* Voltages */
693                         /* Are we using thermistors? */
694                         if (*devid == 0xE9) { /* PC87366 */
695                                 /* These registers are not logical-device
696                                    specific, just that we won't need them if
697                                    we don't use the VLM device */
698                                 confreg[2] = superio_inb(sioaddr, 0x2B);
699                                 confreg[3] = superio_inb(sioaddr, 0x25);
700
701                                 if (confreg[2] & 0x40) {
702                                         printk(KERN_INFO "pc87360: Using "
703                                                "thermistors for temperature "
704                                                "monitoring\n");
705                                 }
706                                 if (confreg[3] & 0xE0) {
707                                         printk(KERN_INFO "pc87360: VID "
708                                                "inputs routed (mode %u)\n",
709                                                confreg[3] >> 5);
710                                 }
711                         }
712                 }
713         }
714
715         superio_exit(sioaddr);
716         return 0;
717 }
718
719 static int pc87360_detect(struct i2c_adapter *adapter)
720 {
721         int i;
722         struct i2c_client *new_client;
723         struct pc87360_data *data;
724         int err = 0;
725         const char *name = "pc87360";
726         int use_thermistors = 0;
727
728         if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
729                 return -ENOMEM;
730         memset(data, 0x00, sizeof(struct pc87360_data));
731
732         new_client = &data->client;
733         i2c_set_clientdata(new_client, data);
734         new_client->addr = address;
735         init_MUTEX(&data->lock);
736         new_client->adapter = adapter;
737         new_client->driver = &pc87360_driver;
738         new_client->flags = 0;
739
740         data->fannr = 2;
741         data->innr = 0;
742         data->tempnr = 0;
743
744         switch (devid) {
745         case 0xe8:
746                 name = "pc87363";
747                 break;
748         case 0xe4:
749                 name = "pc87364";
750                 data->fannr = 3;
751                 break;
752         case 0xe5:
753                 name = "pc87365";
754                 data->fannr = extra_isa[0] ? 3 : 0;
755                 data->innr = extra_isa[1] ? 11 : 0;
756                 data->tempnr = extra_isa[2] ? 2 : 0;
757                 break;
758         case 0xe9:
759                 name = "pc87366";
760                 data->fannr = extra_isa[0] ? 3 : 0;
761                 data->innr = extra_isa[1] ? 14 : 0;
762                 data->tempnr = extra_isa[2] ? 3 : 0;
763                 break;
764         }
765
766         strcpy(new_client->name, name);
767         data->valid = 0;
768         init_MUTEX(&data->update_lock);
769
770         for (i = 0; i < 3; i++) {
771                 if (((data->address[i] = extra_isa[i]))
772                  && !request_region(extra_isa[i], PC87360_EXTENT,
773                                     pc87360_driver.name)) {
774                         dev_err(&new_client->dev, "Region 0x%x-0x%x already "
775                                 "in use!\n", extra_isa[i],
776                                 extra_isa[i]+PC87360_EXTENT-1);
777                         for (i--; i >= 0; i--)
778                                 release_region(extra_isa[i], PC87360_EXTENT);
779                         err = -EBUSY;
780                         goto ERROR1;
781                 }
782         }
783
784         /* Retrieve the fans configuration from Super-I/O space */
785         if (data->fannr)
786                 data->fan_conf = confreg[0] | (confreg[1] << 8);
787
788         if ((err = i2c_attach_client(new_client)))
789                 goto ERROR2;
790
791         /* Use the correct reference voltage
792            Unless both the VLM and the TMS logical devices agree to
793            use an external Vref, the internal one is used. */
794         if (data->innr) {
795                 i = pc87360_read_value(data, LD_IN, NO_BANK,
796                                        PC87365_REG_IN_CONFIG);
797                 if (data->tempnr) {
798                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
799                                                 PC87365_REG_TEMP_CONFIG);
800                 }
801                 data->in_vref = (i&0x02) ? 3025 : 2966;
802                 dev_dbg(&new_client->dev, "Using %s reference voltage\n",
803                         (i&0x02) ? "external" : "internal");
804
805                 data->vid_conf = confreg[3];
806                 data->vrm = 90;
807         }
808
809         /* Fan clock dividers may be needed before any data is read */
810         for (i = 0; i < data->fannr; i++) {
811                 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
812                         data->fan_status[i] = pc87360_read_value(data,
813                                               LD_FAN, NO_BANK,
814                                               PC87360_REG_FAN_STATUS(i));
815         }
816
817         if (init > 0) {
818                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
819                         use_thermistors = confreg[2] & 0x40;
820
821                 pc87360_init_client(new_client, use_thermistors);
822         }
823
824         /* Register sysfs hooks */
825         data->class_dev = hwmon_device_register(&new_client->dev);
826         if (IS_ERR(data->class_dev)) {
827                 err = PTR_ERR(data->class_dev);
828                 goto ERROR3;
829         }
830
831         if (data->innr) {
832                 device_create_file(&new_client->dev, &dev_attr_in0_input);
833                 device_create_file(&new_client->dev, &dev_attr_in1_input);
834                 device_create_file(&new_client->dev, &dev_attr_in2_input);
835                 device_create_file(&new_client->dev, &dev_attr_in3_input);
836                 device_create_file(&new_client->dev, &dev_attr_in4_input);
837                 device_create_file(&new_client->dev, &dev_attr_in5_input);
838                 device_create_file(&new_client->dev, &dev_attr_in6_input);
839                 device_create_file(&new_client->dev, &dev_attr_in7_input);
840                 device_create_file(&new_client->dev, &dev_attr_in8_input);
841                 device_create_file(&new_client->dev, &dev_attr_in9_input);
842                 device_create_file(&new_client->dev, &dev_attr_in10_input);
843                 device_create_file(&new_client->dev, &dev_attr_in0_min);
844                 device_create_file(&new_client->dev, &dev_attr_in1_min);
845                 device_create_file(&new_client->dev, &dev_attr_in2_min);
846                 device_create_file(&new_client->dev, &dev_attr_in3_min);
847                 device_create_file(&new_client->dev, &dev_attr_in4_min);
848                 device_create_file(&new_client->dev, &dev_attr_in5_min);
849                 device_create_file(&new_client->dev, &dev_attr_in6_min);
850                 device_create_file(&new_client->dev, &dev_attr_in7_min);
851                 device_create_file(&new_client->dev, &dev_attr_in8_min);
852                 device_create_file(&new_client->dev, &dev_attr_in9_min);
853                 device_create_file(&new_client->dev, &dev_attr_in10_min);
854                 device_create_file(&new_client->dev, &dev_attr_in0_max);
855                 device_create_file(&new_client->dev, &dev_attr_in1_max);
856                 device_create_file(&new_client->dev, &dev_attr_in2_max);
857                 device_create_file(&new_client->dev, &dev_attr_in3_max);
858                 device_create_file(&new_client->dev, &dev_attr_in4_max);
859                 device_create_file(&new_client->dev, &dev_attr_in5_max);
860                 device_create_file(&new_client->dev, &dev_attr_in6_max);
861                 device_create_file(&new_client->dev, &dev_attr_in7_max);
862                 device_create_file(&new_client->dev, &dev_attr_in8_max);
863                 device_create_file(&new_client->dev, &dev_attr_in9_max);
864                 device_create_file(&new_client->dev, &dev_attr_in10_max);
865                 device_create_file(&new_client->dev, &dev_attr_in0_status);
866                 device_create_file(&new_client->dev, &dev_attr_in1_status);
867                 device_create_file(&new_client->dev, &dev_attr_in2_status);
868                 device_create_file(&new_client->dev, &dev_attr_in3_status);
869                 device_create_file(&new_client->dev, &dev_attr_in4_status);
870                 device_create_file(&new_client->dev, &dev_attr_in5_status);
871                 device_create_file(&new_client->dev, &dev_attr_in6_status);
872                 device_create_file(&new_client->dev, &dev_attr_in7_status);
873                 device_create_file(&new_client->dev, &dev_attr_in8_status);
874                 device_create_file(&new_client->dev, &dev_attr_in9_status);
875                 device_create_file(&new_client->dev, &dev_attr_in10_status);
876
877                 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
878                 device_create_file(&new_client->dev, &dev_attr_vrm);
879                 device_create_file(&new_client->dev, &dev_attr_alarms_in);
880         }
881
882         if (data->tempnr) {
883                 device_create_file(&new_client->dev, &dev_attr_temp1_input);
884                 device_create_file(&new_client->dev, &dev_attr_temp2_input);
885                 device_create_file(&new_client->dev, &dev_attr_temp1_min);
886                 device_create_file(&new_client->dev, &dev_attr_temp2_min);
887                 device_create_file(&new_client->dev, &dev_attr_temp1_max);
888                 device_create_file(&new_client->dev, &dev_attr_temp2_max);
889                 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
890                 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
891                 device_create_file(&new_client->dev, &dev_attr_temp1_status);
892                 device_create_file(&new_client->dev, &dev_attr_temp2_status);
893
894                 device_create_file(&new_client->dev, &dev_attr_alarms_temp);
895         }
896         if (data->tempnr == 3) {
897                 device_create_file(&new_client->dev, &dev_attr_temp3_input);
898                 device_create_file(&new_client->dev, &dev_attr_temp3_min);
899                 device_create_file(&new_client->dev, &dev_attr_temp3_max);
900                 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
901                 device_create_file(&new_client->dev, &dev_attr_temp3_status);
902         }
903         if (data->innr == 14) {
904                 device_create_file(&new_client->dev, &dev_attr_temp4_input);
905                 device_create_file(&new_client->dev, &dev_attr_temp5_input);
906                 device_create_file(&new_client->dev, &dev_attr_temp6_input);
907                 device_create_file(&new_client->dev, &dev_attr_temp4_min);
908                 device_create_file(&new_client->dev, &dev_attr_temp5_min);
909                 device_create_file(&new_client->dev, &dev_attr_temp6_min);
910                 device_create_file(&new_client->dev, &dev_attr_temp4_max);
911                 device_create_file(&new_client->dev, &dev_attr_temp5_max);
912                 device_create_file(&new_client->dev, &dev_attr_temp6_max);
913                 device_create_file(&new_client->dev, &dev_attr_temp4_crit);
914                 device_create_file(&new_client->dev, &dev_attr_temp5_crit);
915                 device_create_file(&new_client->dev, &dev_attr_temp6_crit);
916                 device_create_file(&new_client->dev, &dev_attr_temp4_status);
917                 device_create_file(&new_client->dev, &dev_attr_temp5_status);
918                 device_create_file(&new_client->dev, &dev_attr_temp6_status);
919         }
920
921         if (data->fannr) {
922                 if (FAN_CONFIG_MONITOR(data->fan_conf, 0)) {
923                         device_create_file(&new_client->dev,
924                                            &dev_attr_fan1_input);
925                         device_create_file(&new_client->dev,
926                                            &dev_attr_fan1_min);
927                         device_create_file(&new_client->dev,
928                                            &dev_attr_fan1_div);
929                         device_create_file(&new_client->dev,
930                                            &dev_attr_fan1_status);
931                 }
932
933                 if (FAN_CONFIG_MONITOR(data->fan_conf, 1)) {
934                         device_create_file(&new_client->dev,
935                                            &dev_attr_fan2_input);
936                         device_create_file(&new_client->dev,
937                                            &dev_attr_fan2_min);
938                         device_create_file(&new_client->dev,
939                                            &dev_attr_fan2_div);
940                         device_create_file(&new_client->dev,
941                                            &dev_attr_fan2_status);
942                 }
943
944                 if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
945                         device_create_file(&new_client->dev, &dev_attr_pwm1);
946                 if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
947                         device_create_file(&new_client->dev, &dev_attr_pwm2);
948         }
949         if (data->fannr == 3) {
950                 if (FAN_CONFIG_MONITOR(data->fan_conf, 2)) {
951                         device_create_file(&new_client->dev,
952                                            &dev_attr_fan3_input);
953                         device_create_file(&new_client->dev,
954                                            &dev_attr_fan3_min);
955                         device_create_file(&new_client->dev,
956                                            &dev_attr_fan3_div);
957                         device_create_file(&new_client->dev,
958                                            &dev_attr_fan3_status);
959                 }
960
961                 if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
962                         device_create_file(&new_client->dev, &dev_attr_pwm3);
963         }
964
965         return 0;
966
967 ERROR3:
968         i2c_detach_client(new_client);
969 ERROR2:
970         for (i = 0; i < 3; i++) {
971                 if (data->address[i]) {
972                         release_region(data->address[i], PC87360_EXTENT);
973                 }
974         }
975 ERROR1:
976         kfree(data);
977         return err;
978 }
979
980 static int pc87360_detach_client(struct i2c_client *client)
981 {
982         struct pc87360_data *data = i2c_get_clientdata(client);
983         int i;
984
985         hwmon_device_unregister(data->class_dev);
986
987         if ((i = i2c_detach_client(client)))
988                 return i;
989
990         for (i = 0; i < 3; i++) {
991                 if (data->address[i]) {
992                         release_region(data->address[i], PC87360_EXTENT);
993                 }
994         }
995         kfree(data);
996
997         return 0;
998 }
999
1000 /* ldi is the logical device index
1001    bank is for voltages and temperatures only */
1002 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1003                               u8 reg)
1004 {
1005         int res;
1006
1007         down(&(data->lock));
1008         if (bank != NO_BANK)
1009                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1010         res = inb_p(data->address[ldi] + reg);
1011         up(&(data->lock));
1012
1013         return res;
1014 }
1015
1016 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1017                                 u8 reg, u8 value)
1018 {
1019         down(&(data->lock));
1020         if (bank != NO_BANK)
1021                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1022         outb_p(value, data->address[ldi] + reg);
1023         up(&(data->lock));
1024 }
1025
1026 static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
1027 {
1028         struct pc87360_data *data = i2c_get_clientdata(client);
1029         int i, nr;
1030         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1031         const u8 init_temp[3] = { 2, 2, 1 };
1032         u8 reg;
1033
1034         if (init >= 2 && data->innr) {
1035                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1036                                          PC87365_REG_IN_CONVRATE);
1037                 dev_info(&client->dev, "VLM conversion set to "
1038                          "1s period, 160us delay\n");
1039                 pc87360_write_value(data, LD_IN, NO_BANK,
1040                                     PC87365_REG_IN_CONVRATE,
1041                                     (reg & 0xC0) | 0x11);
1042         }
1043
1044         nr = data->innr < 11 ? data->innr : 11;
1045         for (i=0; i<nr; i++) {
1046                 if (init >= init_in[i]) {
1047                         /* Forcibly enable voltage channel */
1048                         reg = pc87360_read_value(data, LD_IN, i,
1049                                                  PC87365_REG_IN_STATUS);
1050                         if (!(reg & 0x01)) {
1051                                 dev_dbg(&client->dev, "Forcibly "
1052                                         "enabling in%d\n", i);
1053                                 pc87360_write_value(data, LD_IN, i,
1054                                                     PC87365_REG_IN_STATUS,
1055                                                     (reg & 0x68) | 0x87);
1056                         }
1057                 }
1058         }
1059
1060         /* We can't blindly trust the Super-I/O space configuration bit,
1061            most BIOS won't set it properly */
1062         for (i=11; i<data->innr; i++) {
1063                 reg = pc87360_read_value(data, LD_IN, i,
1064                                          PC87365_REG_TEMP_STATUS);
1065                 use_thermistors = use_thermistors || (reg & 0x01);
1066         }
1067
1068         i = use_thermistors ? 2 : 0;
1069         for (; i<data->tempnr; i++) {
1070                 if (init >= init_temp[i]) {
1071                         /* Forcibly enable temperature channel */
1072                         reg = pc87360_read_value(data, LD_TEMP, i,
1073                                                  PC87365_REG_TEMP_STATUS);
1074                         if (!(reg & 0x01)) {
1075                                 dev_dbg(&client->dev, "Forcibly "
1076                                         "enabling temp%d\n", i+1);
1077                                 pc87360_write_value(data, LD_TEMP, i,
1078                                                     PC87365_REG_TEMP_STATUS,
1079                                                     0xCF);
1080                         }
1081                 }
1082         }
1083
1084         if (use_thermistors) {
1085                 for (i=11; i<data->innr; i++) {
1086                         if (init >= init_in[i]) {
1087                                 /* The pin may already be used by thermal
1088                                    diodes */
1089                                 reg = pc87360_read_value(data, LD_TEMP,
1090                                       (i-11)/2, PC87365_REG_TEMP_STATUS);
1091                                 if (reg & 0x01) {
1092                                         dev_dbg(&client->dev, "Skipping "
1093                                                 "temp%d, pin already in use "
1094                                                 "by temp%d\n", i-7, (i-11)/2);
1095                                         continue;
1096                                 }
1097
1098                                 /* Forcibly enable thermistor channel */
1099                                 reg = pc87360_read_value(data, LD_IN, i,
1100                                                          PC87365_REG_IN_STATUS);
1101                                 if (!(reg & 0x01)) {
1102                                         dev_dbg(&client->dev, "Forcibly "
1103                                                 "enabling temp%d\n", i-7);
1104                                         pc87360_write_value(data, LD_IN, i,
1105                                                 PC87365_REG_TEMP_STATUS,
1106                                                 (reg & 0x60) | 0x8F);
1107                                 }
1108                         }
1109                 }
1110         }
1111
1112         if (data->innr) {
1113                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1114                                          PC87365_REG_IN_CONFIG);
1115                 if (reg & 0x01) {
1116                         dev_dbg(&client->dev, "Forcibly "
1117                                 "enabling monitoring (VLM)\n");
1118                         pc87360_write_value(data, LD_IN, NO_BANK,
1119                                             PC87365_REG_IN_CONFIG,
1120                                             reg & 0xFE);
1121                 }
1122         }
1123
1124         if (data->tempnr) {
1125                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1126                                          PC87365_REG_TEMP_CONFIG);
1127                 if (reg & 0x01) {
1128                         dev_dbg(&client->dev, "Forcibly enabling "
1129                                 "monitoring (TMS)\n");
1130                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1131                                             PC87365_REG_TEMP_CONFIG,
1132                                             reg & 0xFE);
1133                 }
1134
1135                 if (init >= 2) {
1136                         /* Chip config as documented by National Semi. */
1137                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1138                         /* We voluntarily omit the bank here, in case the
1139                            sequence itself matters. It shouldn't be a problem,
1140                            since nobody else is supposed to access the
1141                            device at that point. */
1142                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1143                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1144                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1145                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1146                 }
1147         }
1148 }
1149
1150 static void pc87360_autodiv(struct i2c_client *client, int nr)
1151 {
1152         struct pc87360_data *data = i2c_get_clientdata(client);
1153         u8 old_min = data->fan_min[nr];
1154
1155         /* Increase clock divider if needed and possible */
1156         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1157          || (data->fan[nr] >= 224)) { /* next to overflow */
1158                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1159                         data->fan_status[nr] += 0x20;
1160                         data->fan_min[nr] >>= 1;
1161                         data->fan[nr] >>= 1;
1162                         dev_dbg(&client->dev, "Increasing "
1163                                 "clock divider to %d for fan %d\n",
1164                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1165                 }
1166         } else {
1167                 /* Decrease clock divider if possible */
1168                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1169                  && data->fan[nr] < 85 /* bad accuracy */
1170                  && (data->fan_status[nr] & 0x60) != 0x00) {
1171                         data->fan_status[nr] -= 0x20;
1172                         data->fan_min[nr] <<= 1;
1173                         data->fan[nr] <<= 1;
1174                         dev_dbg(&client->dev, "Decreasing "
1175                                 "clock divider to %d for fan %d\n",
1176                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1177                                 nr+1);
1178                 }
1179         }
1180
1181         /* Write new fan min if it changed */
1182         if (old_min != data->fan_min[nr]) {
1183                 pc87360_write_value(data, LD_FAN, NO_BANK,
1184                                     PC87360_REG_FAN_MIN(nr),
1185                                     data->fan_min[nr]);
1186         }
1187 }
1188
1189 static struct pc87360_data *pc87360_update_device(struct device *dev)
1190 {
1191         struct i2c_client *client = to_i2c_client(dev);
1192         struct pc87360_data *data = i2c_get_clientdata(client);
1193         u8 i;
1194
1195         down(&data->update_lock);
1196
1197         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1198                 dev_dbg(&client->dev, "Data update\n");
1199
1200                 /* Fans */
1201                 for (i = 0; i < data->fannr; i++) {
1202                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1203                                 data->fan_status[i] =
1204                                         pc87360_read_value(data, LD_FAN,
1205                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1206                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1207                                                NO_BANK, PC87360_REG_FAN(i));
1208                                 data->fan_min[i] = pc87360_read_value(data,
1209                                                    LD_FAN, NO_BANK,
1210                                                    PC87360_REG_FAN_MIN(i));
1211                                 /* Change clock divider if needed */
1212                                 pc87360_autodiv(client, i);
1213                                 /* Clear bits and write new divider */
1214                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1215                                                     PC87360_REG_FAN_STATUS(i),
1216                                                     data->fan_status[i]);
1217                         }
1218                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1219                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1220                                                NO_BANK, PC87360_REG_PWM(i));
1221                 }
1222
1223                 /* Voltages */
1224                 for (i = 0; i < data->innr; i++) {
1225                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1226                                              PC87365_REG_IN_STATUS);
1227                         /* Clear bits */
1228                         pc87360_write_value(data, LD_IN, i,
1229                                             PC87365_REG_IN_STATUS,
1230                                             data->in_status[i]);
1231                         if ((data->in_status[i] & 0x81) == 0x81) {
1232                                 data->in[i] = pc87360_read_value(data, LD_IN,
1233                                               i, PC87365_REG_IN);
1234                         }
1235                         if (data->in_status[i] & 0x01) {
1236                                 data->in_min[i] = pc87360_read_value(data,
1237                                                   LD_IN, i,
1238                                                   PC87365_REG_IN_MIN);
1239                                 data->in_max[i] = pc87360_read_value(data,
1240                                                   LD_IN, i,
1241                                                   PC87365_REG_IN_MAX);
1242                                 if (i >= 11)
1243                                         data->in_crit[i-11] =
1244                                                 pc87360_read_value(data, LD_IN,
1245                                                 i, PC87365_REG_TEMP_CRIT);
1246                         }
1247                 }
1248                 if (data->innr) {
1249                         data->in_alarms = pc87360_read_value(data, LD_IN,
1250                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1251                                         | ((pc87360_read_value(data, LD_IN,
1252                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1253                                             & 0x07) << 8);
1254                         data->vid = (data->vid_conf & 0xE0) ?
1255                                     pc87360_read_value(data, LD_IN,
1256                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1257                 }
1258
1259                 /* Temperatures */
1260                 for (i = 0; i < data->tempnr; i++) {
1261                         data->temp_status[i] = pc87360_read_value(data,
1262                                                LD_TEMP, i,
1263                                                PC87365_REG_TEMP_STATUS);
1264                         /* Clear bits */
1265                         pc87360_write_value(data, LD_TEMP, i,
1266                                             PC87365_REG_TEMP_STATUS,
1267                                             data->temp_status[i]);
1268                         if ((data->temp_status[i] & 0x81) == 0x81) {
1269                                 data->temp[i] = pc87360_read_value(data,
1270                                                 LD_TEMP, i,
1271                                                 PC87365_REG_TEMP);
1272                         }
1273                         if (data->temp_status[i] & 0x01) {
1274                                 data->temp_min[i] = pc87360_read_value(data,
1275                                                     LD_TEMP, i,
1276                                                     PC87365_REG_TEMP_MIN);
1277                                 data->temp_max[i] = pc87360_read_value(data,
1278                                                     LD_TEMP, i,
1279                                                     PC87365_REG_TEMP_MAX);
1280                                 data->temp_crit[i] = pc87360_read_value(data,
1281                                                      LD_TEMP, i,
1282                                                      PC87365_REG_TEMP_CRIT);
1283                         }
1284                 }
1285                 if (data->tempnr) {
1286                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1287                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1288                                             & 0x3F;
1289                 }
1290
1291                 data->last_updated = jiffies;
1292                 data->valid = 1;
1293         }
1294
1295         up(&data->update_lock);
1296
1297         return data;
1298 }
1299
1300 static int __init pc87360_init(void)
1301 {
1302         int i;
1303
1304         if (pc87360_find(0x2e, &devid, extra_isa)
1305          && pc87360_find(0x4e, &devid, extra_isa)) {
1306                 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1307                        "module not inserted.\n");
1308                 return -ENODEV;
1309         }
1310
1311         /* Arbitrarily pick one of the addresses */
1312         for (i = 0; i < 3; i++) {
1313                 if (extra_isa[i] != 0x0000) {
1314                         address = extra_isa[i];
1315                         break;
1316                 }
1317         }
1318
1319         if (address == 0x0000) {
1320                 printk(KERN_WARNING "pc87360: No active logical device, "
1321                        "module not inserted.\n");
1322                 return -ENODEV;
1323         }
1324
1325         return i2c_isa_add_driver(&pc87360_driver);
1326 }
1327
1328 static void __exit pc87360_exit(void)
1329 {
1330         i2c_isa_del_driver(&pc87360_driver);
1331 }
1332
1333
1334 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1335 MODULE_DESCRIPTION("PC8736x hardware monitor");
1336 MODULE_LICENSE("GPL");
1337
1338 module_init(pc87360_init);
1339 module_exit(pc87360_exit);