Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
[linux-2.6] / 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-sensor.h>
42 #include <linux/i2c-vid.h>
43 #include <asm/io.h>
44
45 static unsigned short normal_i2c[] = { I2C_CLIENT_END };
46 static unsigned int normal_isa[] = { 0, I2C_CLIENT_ISA_END };
47 static struct i2c_force_data forces[] = {{ NULL }};
48 static u8 devid;
49 static unsigned int extra_isa[3];
50 static u8 confreg[4];
51
52 enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
53 static struct i2c_address_data addr_data = {
54         .normal_i2c             = normal_i2c,
55         .normal_isa             = normal_isa,
56         .forces                 = forces,
57 };
58
59 static int init = 1;
60 module_param(init, int, 0);
61 MODULE_PARM_DESC(init,
62  "Chip initialization level:\n"
63  " 0: None\n"
64  "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
65  " 2: Forcibly enable all voltage and temperature channels, except in9\n"
66  " 3: Forcibly enable all voltage and temperature channels, including in9");
67
68 /*
69  * Super-I/O registers and operations
70  */
71
72 #define DEV     0x07    /* Register: Logical device select */
73 #define DEVID   0x20    /* Register: Device ID */
74 #define ACT     0x30    /* Register: Device activation */
75 #define BASE    0x60    /* Register: Base address */
76
77 #define FSCM    0x09    /* Logical device: fans */
78 #define VLM     0x0d    /* Logical device: voltages */
79 #define TMS     0x0e    /* Logical device: temperatures */
80 static const u8 logdev[3] = { FSCM, VLM, TMS };
81
82 #define LD_FAN          0
83 #define LD_IN           1
84 #define LD_TEMP         2
85
86 static inline void superio_outb(int sioaddr, int reg, int val)
87 {
88         outb(reg, sioaddr);
89         outb(val, sioaddr+1);
90 }
91
92 static inline int superio_inb(int sioaddr, int reg)
93 {
94         outb(reg, sioaddr);
95         return inb(sioaddr+1);
96 }
97
98 static inline void superio_exit(int sioaddr)
99 {
100         outb(0x02, sioaddr);
101         outb(0x02, sioaddr+1);
102 }
103
104 /*
105  * Logical devices
106  */
107
108 #define PC87360_EXTENT          0x10
109 #define PC87365_REG_BANK        0x09
110 #define NO_BANK                 0xff
111
112 /*
113  * Fan registers and conversions
114  */
115
116 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
117 #define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
118 #define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
119 #define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
120 #define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
121 #define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
122
123 #define FAN_FROM_REG(val,div)           ((val) == 0 ? 0: \
124                                          480000 / ((val)*(div)))
125 #define FAN_TO_REG(val,div)             ((val) <= 100 ? 0 : \
126                                          480000 / ((val)*(div)))
127 #define FAN_DIV_FROM_REG(val)           (1 << ((val >> 5) & 0x03))
128 #define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
129
130 #define FAN_CONFIG_MONITOR(val,nr)      (((val) >> (2 + nr * 3)) & 1)
131 #define FAN_CONFIG_CONTROL(val,nr)      (((val) >> (3 + nr * 3)) & 1)
132 #define FAN_CONFIG_INVERT(val,nr)       (((val) >> (4 + nr * 3)) & 1)
133
134 #define PWM_FROM_REG(val,inv)           ((inv) ? 255 - (val) : (val))
135 static inline u8 PWM_TO_REG(int val, int inv)
136 {
137         if (inv)
138                 val = 255 - val;
139         if (val < 0)
140                 return 0;
141         if (val > 255)
142                 return 255;
143         return val;
144 }
145
146 /*
147  * Voltage registers and conversions
148  */
149
150 #define PC87365_REG_IN_CONVRATE         0x07
151 #define PC87365_REG_IN_CONFIG           0x08
152 #define PC87365_REG_IN                  0x0B
153 #define PC87365_REG_IN_MIN              0x0D
154 #define PC87365_REG_IN_MAX              0x0C
155 #define PC87365_REG_IN_STATUS           0x0A
156 #define PC87365_REG_IN_ALARMS1          0x00
157 #define PC87365_REG_IN_ALARMS2          0x01
158 #define PC87365_REG_VID                 0x06
159
160 #define IN_FROM_REG(val,ref)            (((val) * (ref) + 128) / 256)
161 #define IN_TO_REG(val,ref)              ((val) < 0 ? 0 : \
162                                          (val)*256 >= (ref)*255 ? 255: \
163                                          ((val) * 256 + (ref)/2) / (ref))
164
165 /*
166  * Temperature registers and conversions
167  */
168
169 #define PC87365_REG_TEMP_CONFIG         0x08
170 #define PC87365_REG_TEMP                0x0B
171 #define PC87365_REG_TEMP_MIN            0x0D
172 #define PC87365_REG_TEMP_MAX            0x0C
173 #define PC87365_REG_TEMP_CRIT           0x0E
174 #define PC87365_REG_TEMP_STATUS         0x0A
175 #define PC87365_REG_TEMP_ALARMS         0x00
176
177 #define TEMP_FROM_REG(val)              ((val) * 1000)
178 #define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
179                                          (val) > 127000 ? 127 : \
180                                          (val) < 0 ? ((val) - 500) / 1000 : \
181                                          ((val) + 500) / 1000)
182
183 /*
184  * Client data (each client gets its own)
185  */
186
187 struct pc87360_data {
188         struct i2c_client client;
189         struct semaphore lock;
190         struct semaphore update_lock;
191         char valid;             /* !=0 if following fields are valid */
192         unsigned long last_updated;     /* In jiffies */
193
194         int address[3];
195
196         u8 fannr, innr, tempnr;
197
198         u8 fan[3];              /* Register value */
199         u8 fan_min[3];          /* Register value */
200         u8 fan_status[3];       /* Register value */
201         u8 pwm[3];              /* Register value */
202         u16 fan_conf;           /* Configuration register values, combined */
203
204         u16 in_vref;            /* 1 mV/bit */
205         u8 in[14];              /* Register value */
206         u8 in_min[14];          /* Register value */
207         u8 in_max[14];          /* Register value */
208         u8 in_crit[3];          /* Register value */
209         u8 in_status[14];       /* Register value */
210         u16 in_alarms;          /* Register values, combined, masked */
211         u8 vid_conf;            /* Configuration register value */
212         u8 vrm;
213         u8 vid;                 /* Register value */
214
215         s8 temp[3];             /* Register value */
216         s8 temp_min[3];         /* Register value */
217         s8 temp_max[3];         /* Register value */
218         s8 temp_crit[3];        /* Register value */
219         u8 temp_status[3];      /* Register value */
220         u8 temp_alarms;         /* Register value, masked */
221 };
222
223 /*
224  * Functions declaration
225  */
226
227 static int pc87360_attach_adapter(struct i2c_adapter *adapter);
228 static int pc87360_detect(struct i2c_adapter *adapter, int address, int kind);
229 static int pc87360_detach_client(struct i2c_client *client);
230
231 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
232                               u8 reg);
233 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
234                                 u8 reg, u8 value);
235 static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
236 static struct pc87360_data *pc87360_update_device(struct device *dev);
237
238 /*
239  * Driver data (common to all clients)
240  */
241
242 static struct i2c_driver pc87360_driver = {
243         .owner          = THIS_MODULE,
244         .name           = "pc87360",
245         .flags          = I2C_DF_NOTIFY,
246         .attach_adapter = pc87360_attach_adapter,
247         .detach_client  = pc87360_detach_client,
248 };
249
250 /*
251  * Sysfs stuff
252  */
253
254 static ssize_t set_fan_min(struct device *dev, const char *buf,
255         size_t count, int nr)
256 {
257         struct i2c_client *client = to_i2c_client(dev);
258         struct pc87360_data *data = i2c_get_clientdata(client);
259         long fan_min = simple_strtol(buf, NULL, 10);
260
261         down(&data->update_lock);
262         fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
263
264         /* If it wouldn't fit, change clock divisor */
265         while (fan_min > 255
266             && (data->fan_status[nr] & 0x60) != 0x60) {
267                 fan_min >>= 1;
268                 data->fan[nr] >>= 1;
269                 data->fan_status[nr] += 0x20;
270         }
271         data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
272         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
273                             data->fan_min[nr]);
274
275         /* Write new divider, preserve alarm bits */
276         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
277                             data->fan_status[nr] & 0xF9);
278         up(&data->update_lock);
279
280         return count;
281 }
282
283 #define show_and_set_fan(offset) \
284 static ssize_t show_fan##offset##_input(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[offset-1], \
288                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
289 } \
290 static ssize_t show_fan##offset##_min(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", FAN_FROM_REG(data->fan_min[offset-1], \
294                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
295 } \
296 static ssize_t show_fan##offset##_div(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_DIV_FROM_REG(data->fan_status[offset-1])); \
301 } \
302 static ssize_t show_fan##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
303 { \
304         struct pc87360_data *data = pc87360_update_device(dev); \
305         return sprintf(buf, "%u\n", \
306                        FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
307 } \
308 static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
309         size_t count) \
310 { \
311         return set_fan_min(dev, buf, count, offset-1); \
312 } \
313 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
314         show_fan##offset##_input, NULL); \
315 static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
316         show_fan##offset##_min, set_fan##offset##_min); \
317 static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
318         show_fan##offset##_div, NULL); \
319 static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
320         show_fan##offset##_status, NULL);
321 show_and_set_fan(1)
322 show_and_set_fan(2)
323 show_and_set_fan(3)
324
325 #define show_and_set_pwm(offset) \
326 static ssize_t show_pwm##offset(struct device *dev, struct device_attribute *attr, char *buf) \
327 { \
328         struct pc87360_data *data = pc87360_update_device(dev); \
329         return sprintf(buf, "%u\n", \
330                        PWM_FROM_REG(data->pwm[offset-1], \
331                                     FAN_CONFIG_INVERT(data->fan_conf, \
332                                                       offset-1))); \
333 } \
334 static ssize_t set_pwm##offset(struct device *dev, struct device_attribute *attr, const char *buf, \
335         size_t count) \
336 { \
337         struct i2c_client *client = to_i2c_client(dev); \
338         struct pc87360_data *data = i2c_get_clientdata(client); \
339         long val = simple_strtol(buf, NULL, 10); \
340  \
341         down(&data->update_lock); \
342         data->pwm[offset-1] = PWM_TO_REG(val, \
343                               FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
344         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
345                             data->pwm[offset-1]); \
346         up(&data->update_lock); \
347         return count; \
348 } \
349 static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
350         show_pwm##offset, set_pwm##offset);
351 show_and_set_pwm(1)
352 show_and_set_pwm(2)
353 show_and_set_pwm(3)
354
355 #define show_and_set_in(offset) \
356 static ssize_t show_in##offset##_input(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[offset], \
360                        data->in_vref)); \
361 } \
362 static ssize_t show_in##offset##_min(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_min[offset], \
366                        data->in_vref)); \
367 } \
368 static ssize_t show_in##offset##_max(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", IN_FROM_REG(data->in_max[offset], \
372                        data->in_vref)); \
373 } \
374 static ssize_t show_in##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
375 { \
376         struct pc87360_data *data = pc87360_update_device(dev); \
377         return sprintf(buf, "%u\n", data->in_status[offset]); \
378 } \
379 static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
380         size_t count) \
381 { \
382         struct i2c_client *client = to_i2c_client(dev); \
383         struct pc87360_data *data = i2c_get_clientdata(client); \
384         long val = simple_strtol(buf, NULL, 10); \
385  \
386         down(&data->update_lock); \
387         data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
388         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
389                             data->in_min[offset]); \
390         up(&data->update_lock); \
391         return count; \
392 } \
393 static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
394         size_t count) \
395 { \
396         struct i2c_client *client = to_i2c_client(dev); \
397         struct pc87360_data *data = i2c_get_clientdata(client); \
398         long val = simple_strtol(buf, NULL, 10); \
399  \
400         down(&data->update_lock); \
401         data->in_max[offset] = IN_TO_REG(val, \
402                                data->in_vref); \
403         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
404                             data->in_max[offset]); \
405         up(&data->update_lock); \
406         return count; \
407 } \
408 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
409         show_in##offset##_input, NULL); \
410 static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
411         show_in##offset##_min, set_in##offset##_min); \
412 static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
413         show_in##offset##_max, set_in##offset##_max); \
414 static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
415         show_in##offset##_status, NULL);
416 show_and_set_in(0)
417 show_and_set_in(1)
418 show_and_set_in(2)
419 show_and_set_in(3)
420 show_and_set_in(4)
421 show_and_set_in(5)
422 show_and_set_in(6)
423 show_and_set_in(7)
424 show_and_set_in(8)
425 show_and_set_in(9)
426 show_and_set_in(10)
427
428 #define show_and_set_therm(offset) \
429 static ssize_t show_temp##offset##_input(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[offset+7], \
433                        data->in_vref)); \
434 } \
435 static ssize_t show_temp##offset##_min(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_min[offset+7], \
439                        data->in_vref)); \
440 } \
441 static ssize_t show_temp##offset##_max(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_max[offset+7], \
445                        data->in_vref)); \
446 } \
447 static ssize_t show_temp##offset##_crit(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", IN_FROM_REG(data->in_crit[offset-4], \
451                        data->in_vref)); \
452 } \
453 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
454 { \
455         struct pc87360_data *data = pc87360_update_device(dev); \
456         return sprintf(buf, "%u\n", data->in_status[offset+7]); \
457 } \
458 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
459         size_t count) \
460 { \
461         struct i2c_client *client = to_i2c_client(dev); \
462         struct pc87360_data *data = i2c_get_clientdata(client); \
463         long val = simple_strtol(buf, NULL, 10); \
464  \
465         down(&data->update_lock); \
466         data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
467         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
468                             data->in_min[offset+7]); \
469         up(&data->update_lock); \
470         return count; \
471 } \
472 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
473         size_t count) \
474 { \
475         struct i2c_client *client = to_i2c_client(dev); \
476         struct pc87360_data *data = i2c_get_clientdata(client); \
477         long val = simple_strtol(buf, NULL, 10); \
478  \
479         down(&data->update_lock); \
480         data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
481         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
482                             data->in_max[offset+7]); \
483         up(&data->update_lock); \
484         return count; \
485 } \
486 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
487         size_t count) \
488 { \
489         struct i2c_client *client = to_i2c_client(dev); \
490         struct pc87360_data *data = i2c_get_clientdata(client); \
491         long val = simple_strtol(buf, NULL, 10); \
492  \
493         down(&data->update_lock); \
494         data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
495         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
496                             data->in_crit[offset-4]); \
497         up(&data->update_lock); \
498         return count; \
499 } \
500 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
501         show_temp##offset##_input, NULL); \
502 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
503         show_temp##offset##_min, set_temp##offset##_min); \
504 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
505         show_temp##offset##_max, set_temp##offset##_max); \
506 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
507         show_temp##offset##_crit, set_temp##offset##_crit); \
508 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
509         show_temp##offset##_status, NULL);
510 show_and_set_therm(4)
511 show_and_set_therm(5)
512 show_and_set_therm(6)
513
514 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
515 {
516         struct pc87360_data *data = pc87360_update_device(dev);
517         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
518 }
519 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
520
521 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
522 {
523         struct pc87360_data *data = pc87360_update_device(dev);
524         return sprintf(buf, "%u\n", data->vrm);
525 }
526 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
527 {
528         struct i2c_client *client = to_i2c_client(dev);
529         struct pc87360_data *data = i2c_get_clientdata(client);
530         data->vrm = simple_strtoul(buf, NULL, 10);
531         return count;
532 }
533 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
534
535 static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
536 {
537         struct pc87360_data *data = pc87360_update_device(dev);
538         return sprintf(buf, "%u\n", data->in_alarms);
539 }
540 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
541
542 #define show_and_set_temp(offset) \
543 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
544 { \
545         struct pc87360_data *data = pc87360_update_device(dev); \
546         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
547 } \
548 static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
549 { \
550         struct pc87360_data *data = pc87360_update_device(dev); \
551         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
552 } \
553 static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
554 { \
555         struct pc87360_data *data = pc87360_update_device(dev); \
556         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
557 }\
558 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
559 { \
560         struct pc87360_data *data = pc87360_update_device(dev); \
561         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
562 }\
563 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
564 { \
565         struct pc87360_data *data = pc87360_update_device(dev); \
566         return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
567 }\
568 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
569         size_t count) \
570 { \
571         struct i2c_client *client = to_i2c_client(dev); \
572         struct pc87360_data *data = i2c_get_clientdata(client); \
573         long val = simple_strtol(buf, NULL, 10); \
574  \
575         down(&data->update_lock); \
576         data->temp_min[offset-1] = TEMP_TO_REG(val); \
577         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
578                             data->temp_min[offset-1]); \
579         up(&data->update_lock); \
580         return count; \
581 } \
582 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
583         size_t count) \
584 { \
585         struct i2c_client *client = to_i2c_client(dev); \
586         struct pc87360_data *data = i2c_get_clientdata(client); \
587         long val = simple_strtol(buf, NULL, 10); \
588  \
589         down(&data->update_lock); \
590         data->temp_max[offset-1] = TEMP_TO_REG(val); \
591         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
592                             data->temp_max[offset-1]); \
593         up(&data->update_lock); \
594         return count; \
595 } \
596 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
597         size_t count) \
598 { \
599         struct i2c_client *client = to_i2c_client(dev); \
600         struct pc87360_data *data = i2c_get_clientdata(client); \
601         long val = simple_strtol(buf, NULL, 10); \
602  \
603         down(&data->update_lock); \
604         data->temp_crit[offset-1] = TEMP_TO_REG(val); \
605         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
606                             data->temp_crit[offset-1]); \
607         up(&data->update_lock); \
608         return count; \
609 } \
610 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
611         show_temp##offset##_input, NULL); \
612 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
613         show_temp##offset##_min, set_temp##offset##_min); \
614 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
615         show_temp##offset##_max, set_temp##offset##_max); \
616 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
617         show_temp##offset##_crit, set_temp##offset##_crit); \
618 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
619         show_temp##offset##_status, NULL);
620 show_and_set_temp(1)
621 show_and_set_temp(2)
622 show_and_set_temp(3)
623
624 static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
625 {
626         struct pc87360_data *data = pc87360_update_device(dev);
627         return sprintf(buf, "%u\n", data->temp_alarms);
628 }
629 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
630
631 /*
632  * Device detection, registration and update
633  */
634
635 static int pc87360_attach_adapter(struct i2c_adapter *adapter)
636 {
637         return i2c_detect(adapter, &addr_data, pc87360_detect);
638 }
639
640 static int pc87360_find(int sioaddr, u8 *devid, int *address)
641 {
642         u16 val;
643         int i;
644         int nrdev; /* logical device count */
645
646         /* No superio_enter */
647
648         /* Identify device */
649         val = superio_inb(sioaddr, DEVID);
650         switch (val) {
651         case 0xE1: /* PC87360 */
652         case 0xE8: /* PC87363 */
653         case 0xE4: /* PC87364 */
654                 nrdev = 1;
655                 break;
656         case 0xE5: /* PC87365 */
657         case 0xE9: /* PC87366 */
658                 nrdev = 3;
659                 break;
660         default:
661                 superio_exit(sioaddr);
662                 return -ENODEV;
663         }
664         /* Remember the device id */
665         *devid = val;
666
667         for (i = 0; i < nrdev; i++) {
668                 /* select logical device */
669                 superio_outb(sioaddr, DEV, logdev[i]);
670
671                 val = superio_inb(sioaddr, ACT);
672                 if (!(val & 0x01)) {
673                         printk(KERN_INFO "pc87360: Device 0x%02x not "
674                                "activated\n", logdev[i]);
675                         continue;
676                 }
677
678                 val = (superio_inb(sioaddr, BASE) << 8)
679                     | superio_inb(sioaddr, BASE + 1);
680                 if (!val) {
681                         printk(KERN_INFO "pc87360: Base address not set for "
682                                "device 0x%02x\n", logdev[i]);
683                         continue;
684                 }
685
686                 address[i] = val;
687
688                 if (i==0) { /* Fans */
689                         confreg[0] = superio_inb(sioaddr, 0xF0);
690                         confreg[1] = superio_inb(sioaddr, 0xF1);
691
692 #ifdef DEBUG
693                         printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
694                                "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
695                                (confreg[0]>>3)&1, (confreg[0]>>4)&1);
696                         printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
697                                "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
698                                (confreg[0]>>6)&1, (confreg[0]>>7)&1);
699                         printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
700                                "ctrl=%d inv=%d\n", confreg[1]&1,
701                                (confreg[1]>>1)&1, (confreg[1]>>2)&1);
702 #endif
703                 } else if (i==1) { /* Voltages */
704                         /* Are we using thermistors? */
705                         if (*devid == 0xE9) { /* PC87366 */
706                                 /* These registers are not logical-device
707                                    specific, just that we won't need them if
708                                    we don't use the VLM device */
709                                 confreg[2] = superio_inb(sioaddr, 0x2B);
710                                 confreg[3] = superio_inb(sioaddr, 0x25);
711
712                                 if (confreg[2] & 0x40) {
713                                         printk(KERN_INFO "pc87360: Using "
714                                                "thermistors for temperature "
715                                                "monitoring\n");
716                                 }
717                                 if (confreg[3] & 0xE0) {
718                                         printk(KERN_INFO "pc87360: VID "
719                                                "inputs routed (mode %u)\n",
720                                                confreg[3] >> 5);
721                                 }
722                         }
723                 }
724         }
725
726         superio_exit(sioaddr);
727         return 0;
728 }
729
730 /* We don't really care about the address.
731    Read from extra_isa instead. */
732 int pc87360_detect(struct i2c_adapter *adapter, int address, int kind)
733 {
734         int i;
735         struct i2c_client *new_client;
736         struct pc87360_data *data;
737         int err = 0;
738         const char *name = "pc87360";
739         int use_thermistors = 0;
740
741         if (!i2c_is_isa_adapter(adapter))
742                 return -ENODEV;
743
744         if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
745                 return -ENOMEM;
746         memset(data, 0x00, sizeof(struct pc87360_data));
747
748         new_client = &data->client;
749         i2c_set_clientdata(new_client, data);
750         new_client->addr = address;
751         init_MUTEX(&data->lock);
752         new_client->adapter = adapter;
753         new_client->driver = &pc87360_driver;
754         new_client->flags = 0;
755
756         data->fannr = 2;
757         data->innr = 0;
758         data->tempnr = 0;
759
760         switch (devid) {
761         case 0xe8:
762                 name = "pc87363";
763                 break;
764         case 0xe4:
765                 name = "pc87364";
766                 data->fannr = 3;
767                 break;
768         case 0xe5:
769                 name = "pc87365";
770                 data->fannr = extra_isa[0] ? 3 : 0;
771                 data->innr = extra_isa[1] ? 11 : 0;
772                 data->tempnr = extra_isa[2] ? 2 : 0;
773                 break;
774         case 0xe9:
775                 name = "pc87366";
776                 data->fannr = extra_isa[0] ? 3 : 0;
777                 data->innr = extra_isa[1] ? 14 : 0;
778                 data->tempnr = extra_isa[2] ? 3 : 0;
779                 break;
780         }
781
782         strcpy(new_client->name, name);
783         data->valid = 0;
784         init_MUTEX(&data->update_lock);
785
786         for (i = 0; i < 3; i++) {
787                 if (((data->address[i] = extra_isa[i]))
788                  && !request_region(extra_isa[i], PC87360_EXTENT,
789                                     pc87360_driver.name)) {
790                         dev_err(&new_client->dev, "Region 0x%x-0x%x already "
791                                 "in use!\n", extra_isa[i],
792                                 extra_isa[i]+PC87360_EXTENT-1);
793                         for (i--; i >= 0; i--)
794                                 release_region(extra_isa[i], PC87360_EXTENT);
795                         err = -EBUSY;
796                         goto ERROR1;
797                 }
798         }
799
800         /* Retrieve the fans configuration from Super-I/O space */
801         if (data->fannr)
802                 data->fan_conf = confreg[0] | (confreg[1] << 8);
803
804         if ((err = i2c_attach_client(new_client)))
805                 goto ERROR2;
806
807         /* Use the correct reference voltage
808            Unless both the VLM and the TMS logical devices agree to
809            use an external Vref, the internal one is used. */
810         if (data->innr) {
811                 i = pc87360_read_value(data, LD_IN, NO_BANK,
812                                        PC87365_REG_IN_CONFIG);
813                 if (data->tempnr) {
814                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
815                                                 PC87365_REG_TEMP_CONFIG);
816                 }
817                 data->in_vref = (i&0x02) ? 3025 : 2966;
818                 dev_dbg(&new_client->dev, "Using %s reference voltage\n",
819                         (i&0x02) ? "external" : "internal");
820
821                 data->vid_conf = confreg[3];
822                 data->vrm = 90;
823         }
824
825         /* Fan clock dividers may be needed before any data is read */
826         for (i = 0; i < data->fannr; i++) {
827                 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
828                         data->fan_status[i] = pc87360_read_value(data,
829                                               LD_FAN, NO_BANK,
830                                               PC87360_REG_FAN_STATUS(i));
831         }
832
833         if (init > 0) {
834                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
835                         use_thermistors = confreg[2] & 0x40;
836
837                 pc87360_init_client(new_client, use_thermistors);
838         }
839
840         /* Register sysfs hooks */
841         if (data->innr) {
842                 device_create_file(&new_client->dev, &dev_attr_in0_input);
843                 device_create_file(&new_client->dev, &dev_attr_in1_input);
844                 device_create_file(&new_client->dev, &dev_attr_in2_input);
845                 device_create_file(&new_client->dev, &dev_attr_in3_input);
846                 device_create_file(&new_client->dev, &dev_attr_in4_input);
847                 device_create_file(&new_client->dev, &dev_attr_in5_input);
848                 device_create_file(&new_client->dev, &dev_attr_in6_input);
849                 device_create_file(&new_client->dev, &dev_attr_in7_input);
850                 device_create_file(&new_client->dev, &dev_attr_in8_input);
851                 device_create_file(&new_client->dev, &dev_attr_in9_input);
852                 device_create_file(&new_client->dev, &dev_attr_in10_input);
853                 device_create_file(&new_client->dev, &dev_attr_in0_min);
854                 device_create_file(&new_client->dev, &dev_attr_in1_min);
855                 device_create_file(&new_client->dev, &dev_attr_in2_min);
856                 device_create_file(&new_client->dev, &dev_attr_in3_min);
857                 device_create_file(&new_client->dev, &dev_attr_in4_min);
858                 device_create_file(&new_client->dev, &dev_attr_in5_min);
859                 device_create_file(&new_client->dev, &dev_attr_in6_min);
860                 device_create_file(&new_client->dev, &dev_attr_in7_min);
861                 device_create_file(&new_client->dev, &dev_attr_in8_min);
862                 device_create_file(&new_client->dev, &dev_attr_in9_min);
863                 device_create_file(&new_client->dev, &dev_attr_in10_min);
864                 device_create_file(&new_client->dev, &dev_attr_in0_max);
865                 device_create_file(&new_client->dev, &dev_attr_in1_max);
866                 device_create_file(&new_client->dev, &dev_attr_in2_max);
867                 device_create_file(&new_client->dev, &dev_attr_in3_max);
868                 device_create_file(&new_client->dev, &dev_attr_in4_max);
869                 device_create_file(&new_client->dev, &dev_attr_in5_max);
870                 device_create_file(&new_client->dev, &dev_attr_in6_max);
871                 device_create_file(&new_client->dev, &dev_attr_in7_max);
872                 device_create_file(&new_client->dev, &dev_attr_in8_max);
873                 device_create_file(&new_client->dev, &dev_attr_in9_max);
874                 device_create_file(&new_client->dev, &dev_attr_in10_max);
875                 device_create_file(&new_client->dev, &dev_attr_in0_status);
876                 device_create_file(&new_client->dev, &dev_attr_in1_status);
877                 device_create_file(&new_client->dev, &dev_attr_in2_status);
878                 device_create_file(&new_client->dev, &dev_attr_in3_status);
879                 device_create_file(&new_client->dev, &dev_attr_in4_status);
880                 device_create_file(&new_client->dev, &dev_attr_in5_status);
881                 device_create_file(&new_client->dev, &dev_attr_in6_status);
882                 device_create_file(&new_client->dev, &dev_attr_in7_status);
883                 device_create_file(&new_client->dev, &dev_attr_in8_status);
884                 device_create_file(&new_client->dev, &dev_attr_in9_status);
885                 device_create_file(&new_client->dev, &dev_attr_in10_status);
886
887                 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
888                 device_create_file(&new_client->dev, &dev_attr_vrm);
889                 device_create_file(&new_client->dev, &dev_attr_alarms_in);
890         }
891
892         if (data->tempnr) {
893                 device_create_file(&new_client->dev, &dev_attr_temp1_input);
894                 device_create_file(&new_client->dev, &dev_attr_temp2_input);
895                 device_create_file(&new_client->dev, &dev_attr_temp1_min);
896                 device_create_file(&new_client->dev, &dev_attr_temp2_min);
897                 device_create_file(&new_client->dev, &dev_attr_temp1_max);
898                 device_create_file(&new_client->dev, &dev_attr_temp2_max);
899                 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
900                 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
901                 device_create_file(&new_client->dev, &dev_attr_temp1_status);
902                 device_create_file(&new_client->dev, &dev_attr_temp2_status);
903
904                 device_create_file(&new_client->dev, &dev_attr_alarms_temp);
905         }
906         if (data->tempnr == 3) {
907                 device_create_file(&new_client->dev, &dev_attr_temp3_input);
908                 device_create_file(&new_client->dev, &dev_attr_temp3_min);
909                 device_create_file(&new_client->dev, &dev_attr_temp3_max);
910                 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
911                 device_create_file(&new_client->dev, &dev_attr_temp3_status);
912         }
913         if (data->innr == 14) {
914                 device_create_file(&new_client->dev, &dev_attr_temp4_input);
915                 device_create_file(&new_client->dev, &dev_attr_temp5_input);
916                 device_create_file(&new_client->dev, &dev_attr_temp6_input);
917                 device_create_file(&new_client->dev, &dev_attr_temp4_min);
918                 device_create_file(&new_client->dev, &dev_attr_temp5_min);
919                 device_create_file(&new_client->dev, &dev_attr_temp6_min);
920                 device_create_file(&new_client->dev, &dev_attr_temp4_max);
921                 device_create_file(&new_client->dev, &dev_attr_temp5_max);
922                 device_create_file(&new_client->dev, &dev_attr_temp6_max);
923                 device_create_file(&new_client->dev, &dev_attr_temp4_crit);
924                 device_create_file(&new_client->dev, &dev_attr_temp5_crit);
925                 device_create_file(&new_client->dev, &dev_attr_temp6_crit);
926                 device_create_file(&new_client->dev, &dev_attr_temp4_status);
927                 device_create_file(&new_client->dev, &dev_attr_temp5_status);
928                 device_create_file(&new_client->dev, &dev_attr_temp6_status);
929         }
930
931         if (data->fannr) {
932                 if (FAN_CONFIG_MONITOR(data->fan_conf, 0)) {
933                         device_create_file(&new_client->dev,
934                                            &dev_attr_fan1_input);
935                         device_create_file(&new_client->dev,
936                                            &dev_attr_fan1_min);
937                         device_create_file(&new_client->dev,
938                                            &dev_attr_fan1_div);
939                         device_create_file(&new_client->dev,
940                                            &dev_attr_fan1_status);
941                 }
942
943                 if (FAN_CONFIG_MONITOR(data->fan_conf, 1)) {
944                         device_create_file(&new_client->dev,
945                                            &dev_attr_fan2_input);
946                         device_create_file(&new_client->dev,
947                                            &dev_attr_fan2_min);
948                         device_create_file(&new_client->dev,
949                                            &dev_attr_fan2_div);
950                         device_create_file(&new_client->dev,
951                                            &dev_attr_fan2_status);
952                 }
953
954                 if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
955                         device_create_file(&new_client->dev, &dev_attr_pwm1);
956                 if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
957                         device_create_file(&new_client->dev, &dev_attr_pwm2);
958         }
959         if (data->fannr == 3) {
960                 if (FAN_CONFIG_MONITOR(data->fan_conf, 2)) {
961                         device_create_file(&new_client->dev,
962                                            &dev_attr_fan3_input);
963                         device_create_file(&new_client->dev,
964                                            &dev_attr_fan3_min);
965                         device_create_file(&new_client->dev,
966                                            &dev_attr_fan3_div);
967                         device_create_file(&new_client->dev,
968                                            &dev_attr_fan3_status);
969                 }
970
971                 if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
972                         device_create_file(&new_client->dev, &dev_attr_pwm3);
973         }
974
975         return 0;
976
977 ERROR2:
978         for (i = 0; i < 3; i++) {
979                 if (data->address[i]) {
980                         release_region(data->address[i], PC87360_EXTENT);
981                 }
982         }
983 ERROR1:
984         kfree(data);
985         return err;
986 }
987
988 static int pc87360_detach_client(struct i2c_client *client)
989 {
990         struct pc87360_data *data = i2c_get_clientdata(client);
991         int i;
992
993         if ((i = i2c_detach_client(client))) {
994                 dev_err(&client->dev, "Client deregistration failed, "
995                         "client not detached.\n");
996                 return i;
997         }
998
999         for (i = 0; i < 3; i++) {
1000                 if (data->address[i]) {
1001                         release_region(data->address[i], PC87360_EXTENT);
1002                 }
1003         }
1004         kfree(data);
1005
1006         return 0;
1007 }
1008
1009 /* ldi is the logical device index
1010    bank is for voltages and temperatures only */
1011 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1012                               u8 reg)
1013 {
1014         int res;
1015
1016         down(&(data->lock));
1017         if (bank != NO_BANK)
1018                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1019         res = inb_p(data->address[ldi] + reg);
1020         up(&(data->lock));
1021
1022         return res;
1023 }
1024
1025 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1026                                 u8 reg, u8 value)
1027 {
1028         down(&(data->lock));
1029         if (bank != NO_BANK)
1030                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1031         outb_p(value, data->address[ldi] + reg);
1032         up(&(data->lock));
1033 }
1034
1035 static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
1036 {
1037         struct pc87360_data *data = i2c_get_clientdata(client);
1038         int i, nr;
1039         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1040         const u8 init_temp[3] = { 2, 2, 1 };
1041         u8 reg;
1042
1043         if (init >= 2 && data->innr) {
1044                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1045                                          PC87365_REG_IN_CONVRATE);
1046                 dev_info(&client->dev, "VLM conversion set to "
1047                          "1s period, 160us delay\n");
1048                 pc87360_write_value(data, LD_IN, NO_BANK,
1049                                     PC87365_REG_IN_CONVRATE,
1050                                     (reg & 0xC0) | 0x11);
1051         }
1052
1053         nr = data->innr < 11 ? data->innr : 11;
1054         for (i=0; i<nr; i++) {
1055                 if (init >= init_in[i]) {
1056                         /* Forcibly enable voltage channel */
1057                         reg = pc87360_read_value(data, LD_IN, i,
1058                                                  PC87365_REG_IN_STATUS);
1059                         if (!(reg & 0x01)) {
1060                                 dev_dbg(&client->dev, "Forcibly "
1061                                         "enabling in%d\n", i);
1062                                 pc87360_write_value(data, LD_IN, i,
1063                                                     PC87365_REG_IN_STATUS,
1064                                                     (reg & 0x68) | 0x87);
1065                         }
1066                 }
1067         }
1068
1069         /* We can't blindly trust the Super-I/O space configuration bit,
1070            most BIOS won't set it properly */
1071         for (i=11; i<data->innr; i++) {
1072                 reg = pc87360_read_value(data, LD_IN, i,
1073                                          PC87365_REG_TEMP_STATUS);
1074                 use_thermistors = use_thermistors || (reg & 0x01);
1075         }
1076
1077         i = use_thermistors ? 2 : 0;
1078         for (; i<data->tempnr; i++) {
1079                 if (init >= init_temp[i]) {
1080                         /* Forcibly enable temperature channel */
1081                         reg = pc87360_read_value(data, LD_TEMP, i,
1082                                                  PC87365_REG_TEMP_STATUS);
1083                         if (!(reg & 0x01)) {
1084                                 dev_dbg(&client->dev, "Forcibly "
1085                                         "enabling temp%d\n", i+1);
1086                                 pc87360_write_value(data, LD_TEMP, i,
1087                                                     PC87365_REG_TEMP_STATUS,
1088                                                     0xCF);
1089                         }
1090                 }
1091         }
1092
1093         if (use_thermistors) {
1094                 for (i=11; i<data->innr; i++) {
1095                         if (init >= init_in[i]) {
1096                                 /* The pin may already be used by thermal
1097                                    diodes */
1098                                 reg = pc87360_read_value(data, LD_TEMP,
1099                                       (i-11)/2, PC87365_REG_TEMP_STATUS);
1100                                 if (reg & 0x01) {
1101                                         dev_dbg(&client->dev, "Skipping "
1102                                                 "temp%d, pin already in use "
1103                                                 "by temp%d\n", i-7, (i-11)/2);
1104                                         continue;
1105                                 }
1106
1107                                 /* Forcibly enable thermistor channel */
1108                                 reg = pc87360_read_value(data, LD_IN, i,
1109                                                          PC87365_REG_IN_STATUS);
1110                                 if (!(reg & 0x01)) {
1111                                         dev_dbg(&client->dev, "Forcibly "
1112                                                 "enabling temp%d\n", i-7);
1113                                         pc87360_write_value(data, LD_IN, i,
1114                                                 PC87365_REG_TEMP_STATUS,
1115                                                 (reg & 0x60) | 0x8F);
1116                                 }
1117                         }
1118                 }
1119         }
1120
1121         if (data->innr) {
1122                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1123                                          PC87365_REG_IN_CONFIG);
1124                 if (reg & 0x01) {
1125                         dev_dbg(&client->dev, "Forcibly "
1126                                 "enabling monitoring (VLM)\n");
1127                         pc87360_write_value(data, LD_IN, NO_BANK,
1128                                             PC87365_REG_IN_CONFIG,
1129                                             reg & 0xFE);
1130                 }
1131         }
1132
1133         if (data->tempnr) {
1134                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1135                                          PC87365_REG_TEMP_CONFIG);
1136                 if (reg & 0x01) {
1137                         dev_dbg(&client->dev, "Forcibly enabling "
1138                                 "monitoring (TMS)\n");
1139                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1140                                             PC87365_REG_TEMP_CONFIG,
1141                                             reg & 0xFE);
1142                 }
1143
1144                 if (init >= 2) {
1145                         /* Chip config as documented by National Semi. */
1146                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1147                         /* We voluntarily omit the bank here, in case the
1148                            sequence itself matters. It shouldn't be a problem,
1149                            since nobody else is supposed to access the
1150                            device at that point. */
1151                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1152                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1153                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1154                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1155                 }
1156         }
1157 }
1158
1159 static void pc87360_autodiv(struct i2c_client *client, int nr)
1160 {
1161         struct pc87360_data *data = i2c_get_clientdata(client);
1162         u8 old_min = data->fan_min[nr];
1163
1164         /* Increase clock divider if needed and possible */
1165         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1166          || (data->fan[nr] >= 224)) { /* next to overflow */
1167                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1168                         data->fan_status[nr] += 0x20;
1169                         data->fan_min[nr] >>= 1;
1170                         data->fan[nr] >>= 1;
1171                         dev_dbg(&client->dev, "Increasing "
1172                                 "clock divider to %d for fan %d\n",
1173                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1174                 }
1175         } else {
1176                 /* Decrease clock divider if possible */
1177                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1178                  && data->fan[nr] < 85 /* bad accuracy */
1179                  && (data->fan_status[nr] & 0x60) != 0x00) {
1180                         data->fan_status[nr] -= 0x20;
1181                         data->fan_min[nr] <<= 1;
1182                         data->fan[nr] <<= 1;
1183                         dev_dbg(&client->dev, "Decreasing "
1184                                 "clock divider to %d for fan %d\n",
1185                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1186                                 nr+1);
1187                 }
1188         }
1189
1190         /* Write new fan min if it changed */
1191         if (old_min != data->fan_min[nr]) {
1192                 pc87360_write_value(data, LD_FAN, NO_BANK,
1193                                     PC87360_REG_FAN_MIN(nr),
1194                                     data->fan_min[nr]);
1195         }
1196 }
1197
1198 static struct pc87360_data *pc87360_update_device(struct device *dev)
1199 {
1200         struct i2c_client *client = to_i2c_client(dev);
1201         struct pc87360_data *data = i2c_get_clientdata(client);
1202         u8 i;
1203
1204         down(&data->update_lock);
1205
1206         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1207                 dev_dbg(&client->dev, "Data update\n");
1208
1209                 /* Fans */
1210                 for (i = 0; i < data->fannr; i++) {
1211                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1212                                 data->fan_status[i] =
1213                                         pc87360_read_value(data, LD_FAN,
1214                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1215                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1216                                                NO_BANK, PC87360_REG_FAN(i));
1217                                 data->fan_min[i] = pc87360_read_value(data,
1218                                                    LD_FAN, NO_BANK,
1219                                                    PC87360_REG_FAN_MIN(i));
1220                                 /* Change clock divider if needed */
1221                                 pc87360_autodiv(client, i);
1222                                 /* Clear bits and write new divider */
1223                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1224                                                     PC87360_REG_FAN_STATUS(i),
1225                                                     data->fan_status[i]);
1226                         }
1227                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1228                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1229                                                NO_BANK, PC87360_REG_PWM(i));
1230                 }
1231
1232                 /* Voltages */
1233                 for (i = 0; i < data->innr; i++) {
1234                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1235                                              PC87365_REG_IN_STATUS);
1236                         /* Clear bits */
1237                         pc87360_write_value(data, LD_IN, i,
1238                                             PC87365_REG_IN_STATUS,
1239                                             data->in_status[i]);
1240                         if ((data->in_status[i] & 0x81) == 0x81) {
1241                                 data->in[i] = pc87360_read_value(data, LD_IN,
1242                                               i, PC87365_REG_IN);
1243                         }
1244                         if (data->in_status[i] & 0x01) {
1245                                 data->in_min[i] = pc87360_read_value(data,
1246                                                   LD_IN, i,
1247                                                   PC87365_REG_IN_MIN);
1248                                 data->in_max[i] = pc87360_read_value(data,
1249                                                   LD_IN, i,
1250                                                   PC87365_REG_IN_MAX);
1251                                 if (i >= 11)
1252                                         data->in_crit[i-11] =
1253                                                 pc87360_read_value(data, LD_IN,
1254                                                 i, PC87365_REG_TEMP_CRIT);
1255                         }
1256                 }
1257                 if (data->innr) {
1258                         data->in_alarms = pc87360_read_value(data, LD_IN,
1259                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1260                                         | ((pc87360_read_value(data, LD_IN,
1261                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1262                                             & 0x07) << 8);
1263                         data->vid = (data->vid_conf & 0xE0) ?
1264                                     pc87360_read_value(data, LD_IN,
1265                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1266                 }
1267
1268                 /* Temperatures */
1269                 for (i = 0; i < data->tempnr; i++) {
1270                         data->temp_status[i] = pc87360_read_value(data,
1271                                                LD_TEMP, i,
1272                                                PC87365_REG_TEMP_STATUS);
1273                         /* Clear bits */
1274                         pc87360_write_value(data, LD_TEMP, i,
1275                                             PC87365_REG_TEMP_STATUS,
1276                                             data->temp_status[i]);
1277                         if ((data->temp_status[i] & 0x81) == 0x81) {
1278                                 data->temp[i] = pc87360_read_value(data,
1279                                                 LD_TEMP, i,
1280                                                 PC87365_REG_TEMP);
1281                         }
1282                         if (data->temp_status[i] & 0x01) {
1283                                 data->temp_min[i] = pc87360_read_value(data,
1284                                                     LD_TEMP, i,
1285                                                     PC87365_REG_TEMP_MIN);
1286                                 data->temp_max[i] = pc87360_read_value(data,
1287                                                     LD_TEMP, i,
1288                                                     PC87365_REG_TEMP_MAX);
1289                                 data->temp_crit[i] = pc87360_read_value(data,
1290                                                      LD_TEMP, i,
1291                                                      PC87365_REG_TEMP_CRIT);
1292                         }
1293                 }
1294                 if (data->tempnr) {
1295                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1296                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1297                                             & 0x3F;
1298                 }
1299
1300                 data->last_updated = jiffies;
1301                 data->valid = 1;
1302         }
1303
1304         up(&data->update_lock);
1305
1306         return data;
1307 }
1308
1309 static int __init pc87360_init(void)
1310 {
1311         int i;
1312
1313         if (pc87360_find(0x2e, &devid, extra_isa)
1314          && pc87360_find(0x4e, &devid, extra_isa)) {
1315                 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1316                        "module not inserted.\n");
1317                 return -ENODEV;
1318         }
1319
1320         /* Arbitrarily pick one of the addresses */
1321         for (i = 0; i < 3; i++) {
1322                 if (extra_isa[i] != 0x0000) {
1323                         normal_isa[0] = extra_isa[i];
1324                         break;
1325                 }
1326         }
1327
1328         if (normal_isa[0] == 0x0000) {
1329                 printk(KERN_WARNING "pc87360: No active logical device, "
1330                        "module not inserted.\n");
1331                 return -ENODEV;
1332         }
1333
1334         return i2c_add_driver(&pc87360_driver);
1335 }
1336
1337 static void __exit pc87360_exit(void)
1338 {
1339         i2c_del_driver(&pc87360_driver);
1340 }
1341
1342
1343 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1344 MODULE_DESCRIPTION("PC8736x hardware monitor");
1345 MODULE_LICENSE("GPL");
1346
1347 module_init(pc87360_init);
1348 module_exit(pc87360_exit);