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Linux v2.6.13
[linux-2.6/next.git] / drivers / hwmon / lm85.c
blobb4d7fd41826478a241d50535a70bbbf0507c8de4
1 /*
2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
8
9 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/i2c-sensor.h>
32 #include <linux/i2c-vid.h>
33
34 /* Addresses to scan */
35 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
36 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
37
38 /* Insmod parameters */
39 SENSORS_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102);
40
41 /* The LM85 registers */
42
43 #define LM85_REG_IN(nr) (0x20 + (nr))
44 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
45 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
46
47 #define LM85_REG_TEMP(nr) (0x25 + (nr))
48 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
49 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
50
51 /* Fan speeds are LSB, MSB (2 bytes) */
52 #define LM85_REG_FAN(nr) (0x28 + (nr) *2)
53 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2)
54
55 #define LM85_REG_PWM(nr) (0x30 + (nr))
56
57 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr))
58
59 #define ADT7463_REG_TMIN_CTL1 0x36
60 #define ADT7463_REG_TMIN_CTL2 0x37
61
62 #define LM85_REG_DEVICE 0x3d
63 #define LM85_REG_COMPANY 0x3e
64 #define LM85_REG_VERSTEP 0x3f
65 /* These are the recognized values for the above regs */
66 #define LM85_DEVICE_ADX 0x27
67 #define LM85_COMPANY_NATIONAL 0x01
68 #define LM85_COMPANY_ANALOG_DEV 0x41
69 #define LM85_COMPANY_SMSC 0x5c
70 #define LM85_VERSTEP_VMASK 0xf0
71 #define LM85_VERSTEP_GENERIC 0x60
72 #define LM85_VERSTEP_LM85C 0x60
73 #define LM85_VERSTEP_LM85B 0x62
74 #define LM85_VERSTEP_ADM1027 0x60
75 #define LM85_VERSTEP_ADT7463 0x62
76 #define LM85_VERSTEP_ADT7463C 0x6A
77 #define LM85_VERSTEP_EMC6D100_A0 0x60
78 #define LM85_VERSTEP_EMC6D100_A1 0x61
79 #define LM85_VERSTEP_EMC6D102 0x65
80
81 #define LM85_REG_CONFIG 0x40
82
83 #define LM85_REG_ALARM1 0x41
84 #define LM85_REG_ALARM2 0x42
85
86 #define LM85_REG_VID 0x43
87
88 /* Automated FAN control */
89 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
90 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
91 #define LM85_REG_AFAN_SPIKE1 0x62
92 #define LM85_REG_AFAN_SPIKE2 0x63
93 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
94 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
95 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
96 #define LM85_REG_AFAN_HYST1 0x6d
97 #define LM85_REG_AFAN_HYST2 0x6e
98
99 #define LM85_REG_TACH_MODE 0x74
100 #define LM85_REG_SPINUP_CTL 0x75
101
102 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr))
103 #define ADM1027_REG_CONFIG2 0x73
104 #define ADM1027_REG_INTMASK1 0x74
105 #define ADM1027_REG_INTMASK2 0x75
106 #define ADM1027_REG_EXTEND_ADC1 0x76
107 #define ADM1027_REG_EXTEND_ADC2 0x77
108 #define ADM1027_REG_CONFIG3 0x78
109 #define ADM1027_REG_FAN_PPR 0x7b
110
111 #define ADT7463_REG_THERM 0x79
112 #define ADT7463_REG_THERM_LIMIT 0x7A
113
114 #define EMC6D100_REG_ALARM3 0x7d
115 /* IN5, IN6 and IN7 */
116 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5))
117 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2)
118 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2)
119 #define EMC6D102_REG_EXTEND_ADC1 0x85
120 #define EMC6D102_REG_EXTEND_ADC2 0x86
121 #define EMC6D102_REG_EXTEND_ADC3 0x87
122 #define EMC6D102_REG_EXTEND_ADC4 0x88
123
124 #define LM85_ALARM_IN0 0x0001
125 #define LM85_ALARM_IN1 0x0002
126 #define LM85_ALARM_IN2 0x0004
127 #define LM85_ALARM_IN3 0x0008
128 #define LM85_ALARM_TEMP1 0x0010
129 #define LM85_ALARM_TEMP2 0x0020
130 #define LM85_ALARM_TEMP3 0x0040
131 #define LM85_ALARM_ALARM2 0x0080
132 #define LM85_ALARM_IN4 0x0100
133 #define LM85_ALARM_RESERVED 0x0200
134 #define LM85_ALARM_FAN1 0x0400
135 #define LM85_ALARM_FAN2 0x0800
136 #define LM85_ALARM_FAN3 0x1000
137 #define LM85_ALARM_FAN4 0x2000
138 #define LM85_ALARM_TEMP1_FAULT 0x4000
139 #define LM85_ALARM_TEMP3_FAULT 0x8000
140
141
142 /* Conversions. Rounding and limit checking is only done on the TO_REG
143 variants. Note that you should be a bit careful with which arguments
144 these macros are called: arguments may be evaluated more than once.
145 */
146
147 /* IN are scaled acording to built-in resistors */
148 static int lm85_scaling[] = { /* .001 Volts */
149 2500, 2250, 3300, 5000, 12000,
150 3300, 1500, 1800 /*EMC6D100*/
151 };
152 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from))
153
154 #define INS_TO_REG(n,val) \
155 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255)
156
157 #define INSEXT_FROM_REG(n,val,ext,scale) \
158 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n])
159
160 #define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1)
161
162 /* FAN speed is measured using 90kHz clock */
163 #define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
164 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val))
165
166 /* Temperature is reported in .001 degC increments */
167 #define TEMP_TO_REG(val) \
168 SENSORS_LIMIT(SCALE(val,1000,1),-127,127)
169 #define TEMPEXT_FROM_REG(val,ext,scale) \
170 SCALE((val)*scale + (ext),scale,1000)
171 #define TEMP_FROM_REG(val) \
172 TEMPEXT_FROM_REG(val,0,1)
173
174 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
175 #define PWM_FROM_REG(val) (val)
176
177
178 /* ZONEs have the following parameters:
179 * Limit (low) temp, 1. degC
180 * Hysteresis (below limit), 1. degC (0-15)
181 * Range of speed control, .1 degC (2-80)
182 * Critical (high) temp, 1. degC
183 *
184 * FAN PWMs have the following parameters:
185 * Reference Zone, 1, 2, 3, etc.
186 * Spinup time, .05 sec
187 * PWM value at limit/low temp, 1 count
188 * PWM Frequency, 1. Hz
189 * PWM is Min or OFF below limit, flag
190 * Invert PWM output, flag
191 *
192 * Some chips filter the temp, others the fan.
193 * Filter constant (or disabled) .1 seconds
194 */
195
196 /* These are the zone temperature range encodings in .001 degree C */
197 static int lm85_range_map[] = {
198 2000, 2500, 3300, 4000, 5000, 6600,
199 8000, 10000, 13300, 16000, 20000, 26600,
200 32000, 40000, 53300, 80000
201 };
202 static int RANGE_TO_REG( int range )
203 {
204 int i;
205
206 if ( range < lm85_range_map[0] ) {
207 return 0 ;
208 } else if ( range > lm85_range_map[15] ) {
209 return 15 ;
210 } else { /* find closest match */
211 for ( i = 14 ; i >= 0 ; --i ) {
212 if ( range > lm85_range_map[i] ) { /* range bracketed */
213 if ((lm85_range_map[i+1] - range) <
214 (range - lm85_range_map[i])) {
215 i++;
216 break;
217 }
218 break;
219 }
220 }
221 }
222 return( i & 0x0f );
223 }
224 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
225
226 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
227 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
228 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
229 * is ignored, or set to 0.
230 */
231 /* These are the PWM frequency encodings */
232 static int lm85_freq_map[] = { /* .1 Hz */
233 100, 150, 230, 300, 380, 470, 620, 940
234 };
235 static int FREQ_TO_REG( int freq )
236 {
237 int i;
238
239 if( freq >= lm85_freq_map[7] ) { return 7 ; }
240 for( i = 0 ; i < 7 ; ++i )
241 if( freq <= lm85_freq_map[i] )
242 break ;
243 return( i & 0x07 );
244 }
245 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
246
247 /* Since we can't use strings, I'm abusing these numbers
248 * to stand in for the following meanings:
249 * 1 -- PWM responds to Zone 1
250 * 2 -- PWM responds to Zone 2
251 * 3 -- PWM responds to Zone 3
252 * 23 -- PWM responds to the higher temp of Zone 2 or 3
253 * 123 -- PWM responds to highest of Zone 1, 2, or 3
254 * 0 -- PWM is always at 0% (ie, off)
255 * -1 -- PWM is always at 100%
256 * -2 -- PWM responds to manual control
257 */
258
259 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
260 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
261
262 static int ZONE_TO_REG( int zone )
263 {
264 int i;
265
266 for( i = 0 ; i <= 7 ; ++i )
267 if( zone == lm85_zone_map[i] )
268 break ;
269 if( i > 7 ) /* Not found. */
270 i = 3; /* Always 100% */
271 return( (i & 0x07)<<5 );
272 }
273
274 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
275 #define HYST_FROM_REG(val) ((val)*1000)
276
277 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
278 #define OFFSET_FROM_REG(val) ((val)*25)
279
280 #define PPR_MASK(fan) (0x03<<(fan *2))
281 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
282 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
283
284 /* i2c-vid.h defines vid_from_reg() */
285 #define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm)))
286
287 /* Unlike some other drivers we DO NOT set initial limits. Use
288 * the config file to set limits. Some users have reported
289 * motherboards shutting down when we set limits in a previous
290 * version of the driver.
291 */
292
293 /* Chip sampling rates
294 *
295 * Some sensors are not updated more frequently than once per second
296 * so it doesn't make sense to read them more often than that.
297 * We cache the results and return the saved data if the driver
298 * is called again before a second has elapsed.
299 *
300 * Also, there is significant configuration data for this chip
301 * given the automatic PWM fan control that is possible. There
302 * are about 47 bytes of config data to only 22 bytes of actual
303 * readings. So, we keep the config data up to date in the cache
304 * when it is written and only sample it once every 1 *minute*
305 */
306 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
307 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
308
309 /* For each registered LM85, we need to keep some data in memory. That
310 data is pointed to by lm85_list[NR]->data. The structure itself is
311 dynamically allocated, at the same time when a new lm85 client is
312 allocated. */
313
314 /* LM85 can automatically adjust fan speeds based on temperature
315 * This structure encapsulates an entire Zone config. There are
316 * three zones (one for each temperature input) on the lm85
317 */
318 struct lm85_zone {
319 s8 limit; /* Low temp limit */
320 u8 hyst; /* Low limit hysteresis. (0-15) */
321 u8 range; /* Temp range, encoded */
322 s8 critical; /* "All fans ON" temp limit */
323 u8 off_desired; /* Actual "off" temperature specified. Preserved
324 * to prevent "drift" as other autofan control
325 * values change.
326 */
327 u8 max_desired; /* Actual "max" temperature specified. Preserved
328 * to prevent "drift" as other autofan control
329 * values change.
330 */
331 };
332
333 struct lm85_autofan {
334 u8 config; /* Register value */
335 u8 freq; /* PWM frequency, encoded */
336 u8 min_pwm; /* Minimum PWM value, encoded */
337 u8 min_off; /* Min PWM or OFF below "limit", flag */
338 };
339
340 struct lm85_data {
341 struct i2c_client client;
342 struct semaphore lock;
343 enum chips type;
344
345 struct semaphore update_lock;
346 int valid; /* !=0 if following fields are valid */
347 unsigned long last_reading; /* In jiffies */
348 unsigned long last_config; /* In jiffies */
349
350 u8 in[8]; /* Register value */
351 u8 in_max[8]; /* Register value */
352 u8 in_min[8]; /* Register value */
353 s8 temp[3]; /* Register value */
354 s8 temp_min[3]; /* Register value */
355 s8 temp_max[3]; /* Register value */
356 s8 temp_offset[3]; /* Register value */
357 u16 fan[4]; /* Register value */
358 u16 fan_min[4]; /* Register value */
359 u8 pwm[3]; /* Register value */
360 u8 spinup_ctl; /* Register encoding, combined */
361 u8 tach_mode; /* Register encoding, combined */
362 u8 temp_ext[3]; /* Decoded values */
363 u8 in_ext[8]; /* Decoded values */
364 u8 adc_scale; /* ADC Extended bits scaling factor */
365 u8 fan_ppr; /* Register value */
366 u8 smooth[3]; /* Register encoding */
367 u8 vid; /* Register value */
368 u8 vrm; /* VRM version */
369 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
370 u8 oppoint[3]; /* Register value */
371 u16 tmin_ctl; /* Register value */
372 unsigned long therm_total; /* Cummulative therm count */
373 u8 therm_limit; /* Register value */
374 u32 alarms; /* Register encoding, combined */
375 struct lm85_autofan autofan[3];
376 struct lm85_zone zone[3];
377 };
378
379 static int lm85_attach_adapter(struct i2c_adapter *adapter);
380 static int lm85_detect(struct i2c_adapter *adapter, int address,
381 int kind);
382 static int lm85_detach_client(struct i2c_client *client);
383
384 static int lm85_read_value(struct i2c_client *client, u8 register);
385 static int lm85_write_value(struct i2c_client *client, u8 register, int value);
386 static struct lm85_data *lm85_update_device(struct device *dev);
387 static void lm85_init_client(struct i2c_client *client);
388
389
390 static struct i2c_driver lm85_driver = {
391 .owner = THIS_MODULE,
392 .name = "lm85",
393 .id = I2C_DRIVERID_LM85,
394 .flags = I2C_DF_NOTIFY,
395 .attach_adapter = lm85_attach_adapter,
396 .detach_client = lm85_detach_client,
397 };
398
399
400 /* 4 Fans */
401 static ssize_t show_fan(struct device *dev, char *buf, int nr)
402 {
403 struct lm85_data *data = lm85_update_device(dev);
404 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
405 }
406 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
407 {
408 struct lm85_data *data = lm85_update_device(dev);
409 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
410 }
411 static ssize_t set_fan_min(struct device *dev, const char *buf,
412 size_t count, int nr)
413 {
414 struct i2c_client *client = to_i2c_client(dev);
415 struct lm85_data *data = i2c_get_clientdata(client);
416 long val = simple_strtol(buf, NULL, 10);
417
418 down(&data->update_lock);
419 data->fan_min[nr] = FAN_TO_REG(val);
420 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
421 up(&data->update_lock);
422 return count;
423 }
424
425 #define show_fan_offset(offset) \
426 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
427 { \
428 return show_fan(dev, buf, offset - 1); \
429 } \
430 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
431 { \
432 return show_fan_min(dev, buf, offset - 1); \
433 } \
434 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
435 const char *buf, size_t count) \
436 { \
437 return set_fan_min(dev, buf, count, offset - 1); \
438 } \
439 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
440 NULL); \
441 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
442 show_fan_##offset##_min, set_fan_##offset##_min);
443
444 show_fan_offset(1);
445 show_fan_offset(2);
446 show_fan_offset(3);
447 show_fan_offset(4);
448
449 /* vid, vrm, alarms */
450
451 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
452 {
453 struct lm85_data *data = lm85_update_device(dev);
454 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
455 }
456
457 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
458
459 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
460 {
461 struct lm85_data *data = lm85_update_device(dev);
462 return sprintf(buf, "%ld\n", (long) data->vrm);
463 }
464
465 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
466 {
467 struct i2c_client *client = to_i2c_client(dev);
468 struct lm85_data *data = i2c_get_clientdata(client);
469 u32 val;
470
471 val = simple_strtoul(buf, NULL, 10);
472 data->vrm = val;
473 return count;
474 }
475
476 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
477
478 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
479 {
480 struct lm85_data *data = lm85_update_device(dev);
481 return sprintf(buf, "%u\n", data->alarms);
482 }
483
484 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
485
486 /* pwm */
487
488 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
489 {
490 struct lm85_data *data = lm85_update_device(dev);
491 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
492 }
493 static ssize_t set_pwm(struct device *dev, const char *buf,
494 size_t count, int nr)
495 {
496 struct i2c_client *client = to_i2c_client(dev);
497 struct lm85_data *data = i2c_get_clientdata(client);
498 long val = simple_strtol(buf, NULL, 10);
499
500 down(&data->update_lock);
501 data->pwm[nr] = PWM_TO_REG(val);
502 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
503 up(&data->update_lock);
504 return count;
505 }
506 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
507 {
508 struct lm85_data *data = lm85_update_device(dev);
509 int pwm_zone;
510
511 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
512 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
513 }
514
515 #define show_pwm_reg(offset) \
516 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
517 { \
518 return show_pwm(dev, buf, offset - 1); \
519 } \
520 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
521 const char *buf, size_t count) \
522 { \
523 return set_pwm(dev, buf, count, offset - 1); \
524 } \
525 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \
526 { \
527 return show_pwm_enable(dev, buf, offset - 1); \
528 } \
529 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
530 show_pwm_##offset, set_pwm_##offset); \
531 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \
532 show_pwm_enable##offset, NULL);
533
534 show_pwm_reg(1);
535 show_pwm_reg(2);
536 show_pwm_reg(3);
537
538 /* Voltages */
539
540 static ssize_t show_in(struct device *dev, char *buf, int nr)
541 {
542 struct lm85_data *data = lm85_update_device(dev);
543 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
544 data->in[nr],
545 data->in_ext[nr],
546 data->adc_scale) );
547 }
548 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
549 {
550 struct lm85_data *data = lm85_update_device(dev);
551 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
552 }
553 static ssize_t set_in_min(struct device *dev, const char *buf,
554 size_t count, int nr)
555 {
556 struct i2c_client *client = to_i2c_client(dev);
557 struct lm85_data *data = i2c_get_clientdata(client);
558 long val = simple_strtol(buf, NULL, 10);
559
560 down(&data->update_lock);
561 data->in_min[nr] = INS_TO_REG(nr, val);
562 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
563 up(&data->update_lock);
564 return count;
565 }
566 static ssize_t show_in_max(struct device *dev, char *buf, int nr)
567 {
568 struct lm85_data *data = lm85_update_device(dev);
569 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
570 }
571 static ssize_t set_in_max(struct device *dev, const char *buf,
572 size_t count, int nr)
573 {
574 struct i2c_client *client = to_i2c_client(dev);
575 struct lm85_data *data = i2c_get_clientdata(client);
576 long val = simple_strtol(buf, NULL, 10);
577
578 down(&data->update_lock);
579 data->in_max[nr] = INS_TO_REG(nr, val);
580 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
581 up(&data->update_lock);
582 return count;
583 }
584 #define show_in_reg(offset) \
585 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
586 { \
587 return show_in(dev, buf, offset); \
588 } \
589 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
590 { \
591 return show_in_min(dev, buf, offset); \
592 } \
593 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
594 { \
595 return show_in_max(dev, buf, offset); \
596 } \
597 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \
598 const char *buf, size_t count) \
599 { \
600 return set_in_min(dev, buf, count, offset); \
601 } \
602 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \
603 const char *buf, size_t count) \
604 { \
605 return set_in_max(dev, buf, count, offset); \
606 } \
607 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \
608 NULL); \
609 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
610 show_in_##offset##_min, set_in_##offset##_min); \
611 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
612 show_in_##offset##_max, set_in_##offset##_max);
613
614 show_in_reg(0);
615 show_in_reg(1);
616 show_in_reg(2);
617 show_in_reg(3);
618 show_in_reg(4);
619
620 /* Temps */
621
622 static ssize_t show_temp(struct device *dev, char *buf, int nr)
623 {
624 struct lm85_data *data = lm85_update_device(dev);
625 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
626 data->temp_ext[nr],
627 data->adc_scale) );
628 }
629 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
630 {
631 struct lm85_data *data = lm85_update_device(dev);
632 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
633 }
634 static ssize_t set_temp_min(struct device *dev, const char *buf,
635 size_t count, int nr)
636 {
637 struct i2c_client *client = to_i2c_client(dev);
638 struct lm85_data *data = i2c_get_clientdata(client);
639 long val = simple_strtol(buf, NULL, 10);
640
641 down(&data->update_lock);
642 data->temp_min[nr] = TEMP_TO_REG(val);
643 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
644 up(&data->update_lock);
645 return count;
646 }
647 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
648 {
649 struct lm85_data *data = lm85_update_device(dev);
650 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
651 }
652 static ssize_t set_temp_max(struct device *dev, const char *buf,
653 size_t count, int nr)
654 {
655 struct i2c_client *client = to_i2c_client(dev);
656 struct lm85_data *data = i2c_get_clientdata(client);
657 long val = simple_strtol(buf, NULL, 10);
658
659 down(&data->update_lock);
660 data->temp_max[nr] = TEMP_TO_REG(val);
661 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
662 up(&data->update_lock);
663 return count;
664 }
665 #define show_temp_reg(offset) \
666 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
667 { \
668 return show_temp(dev, buf, offset - 1); \
669 } \
670 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
671 { \
672 return show_temp_min(dev, buf, offset - 1); \
673 } \
674 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
675 { \
676 return show_temp_max(dev, buf, offset - 1); \
677 } \
678 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
679 const char *buf, size_t count) \
680 { \
681 return set_temp_min(dev, buf, count, offset - 1); \
682 } \
683 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
684 const char *buf, size_t count) \
685 { \
686 return set_temp_max(dev, buf, count, offset - 1); \
687 } \
688 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
689 NULL); \
690 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
691 show_temp_##offset##_min, set_temp_##offset##_min); \
692 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
693 show_temp_##offset##_max, set_temp_##offset##_max);
694
695 show_temp_reg(1);
696 show_temp_reg(2);
697 show_temp_reg(3);
698
699
700 /* Automatic PWM control */
701
702 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
703 {
704 struct lm85_data *data = lm85_update_device(dev);
705 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
706 }
707 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
708 size_t count, int nr)
709 {
710 struct i2c_client *client = to_i2c_client(dev);
711 struct lm85_data *data = i2c_get_clientdata(client);
712 long val = simple_strtol(buf, NULL, 10);
713
714 down(&data->update_lock);
715 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
716 | ZONE_TO_REG(val) ;
717 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
718 data->autofan[nr].config);
719 up(&data->update_lock);
720 return count;
721 }
722 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
723 {
724 struct lm85_data *data = lm85_update_device(dev);
725 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
726 }
727 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
728 size_t count, int nr)
729 {
730 struct i2c_client *client = to_i2c_client(dev);
731 struct lm85_data *data = i2c_get_clientdata(client);
732 long val = simple_strtol(buf, NULL, 10);
733
734 down(&data->update_lock);
735 data->autofan[nr].min_pwm = PWM_TO_REG(val);
736 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
737 data->autofan[nr].min_pwm);
738 up(&data->update_lock);
739 return count;
740 }
741 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
742 {
743 struct lm85_data *data = lm85_update_device(dev);
744 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
745 }
746 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
747 size_t count, int nr)
748 {
749 struct i2c_client *client = to_i2c_client(dev);
750 struct lm85_data *data = i2c_get_clientdata(client);
751 long val = simple_strtol(buf, NULL, 10);
752
753 down(&data->update_lock);
754 data->autofan[nr].min_off = val;
755 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
756 | data->syncpwm3
757 | (data->autofan[0].min_off ? 0x20 : 0)
758 | (data->autofan[1].min_off ? 0x40 : 0)
759 | (data->autofan[2].min_off ? 0x80 : 0)
760 );
761 up(&data->update_lock);
762 return count;
763 }
764 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
765 {
766 struct lm85_data *data = lm85_update_device(dev);
767 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
768 }
769 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
770 size_t count, int nr)
771 {
772 struct i2c_client *client = to_i2c_client(dev);
773 struct lm85_data *data = i2c_get_clientdata(client);
774 long val = simple_strtol(buf, NULL, 10);
775
776 down(&data->update_lock);
777 data->autofan[nr].freq = FREQ_TO_REG(val);
778 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
779 (data->zone[nr].range << 4)
780 | data->autofan[nr].freq
781 );
782 up(&data->update_lock);
783 return count;
784 }
785 #define pwm_auto(offset) \
786 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
787 char *buf) \
788 { \
789 return show_pwm_auto_channels(dev, buf, offset - 1); \
790 } \
791 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
792 const char *buf, size_t count) \
793 { \
794 return set_pwm_auto_channels(dev, buf, count, offset - 1); \
795 } \
796 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
797 char *buf) \
798 { \
799 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \
800 } \
801 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
802 const char *buf, size_t count) \
803 { \
804 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \
805 } \
806 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
807 char *buf) \
808 { \
809 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \
810 } \
811 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
812 const char *buf, size_t count) \
813 { \
814 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \
815 } \
816 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \
817 char *buf) \
818 { \
819 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \
820 } \
821 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \
822 const char *buf, size_t count) \
823 { \
824 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \
825 } \
826 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \
827 show_pwm##offset##_auto_channels, \
828 set_pwm##offset##_auto_channels); \
829 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \
830 show_pwm##offset##_auto_pwm_min, \
831 set_pwm##offset##_auto_pwm_min); \
832 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \
833 show_pwm##offset##_auto_pwm_minctl, \
834 set_pwm##offset##_auto_pwm_minctl); \
835 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \
836 show_pwm##offset##_auto_pwm_freq, \
837 set_pwm##offset##_auto_pwm_freq);
838 pwm_auto(1);
839 pwm_auto(2);
840 pwm_auto(3);
841
842 /* Temperature settings for automatic PWM control */
843
844 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
845 {
846 struct lm85_data *data = lm85_update_device(dev);
847 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
848 HYST_FROM_REG(data->zone[nr].hyst));
849 }
850 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
851 size_t count, int nr)
852 {
853 struct i2c_client *client = to_i2c_client(dev);
854 struct lm85_data *data = i2c_get_clientdata(client);
855 int min;
856 long val = simple_strtol(buf, NULL, 10);
857
858 down(&data->update_lock);
859 min = TEMP_FROM_REG(data->zone[nr].limit);
860 data->zone[nr].off_desired = TEMP_TO_REG(val);
861 data->zone[nr].hyst = HYST_TO_REG(min - val);
862 if ( nr == 0 || nr == 1 ) {
863 lm85_write_value(client, LM85_REG_AFAN_HYST1,
864 (data->zone[0].hyst << 4)
865 | data->zone[1].hyst
866 );
867 } else {
868 lm85_write_value(client, LM85_REG_AFAN_HYST2,
869 (data->zone[2].hyst << 4)
870 );
871 }
872 up(&data->update_lock);
873 return count;
874 }
875 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
876 {
877 struct lm85_data *data = lm85_update_device(dev);
878 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
879 }
880 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
881 size_t count, int nr)
882 {
883 struct i2c_client *client = to_i2c_client(dev);
884 struct lm85_data *data = i2c_get_clientdata(client);
885 long val = simple_strtol(buf, NULL, 10);
886
887 down(&data->update_lock);
888 data->zone[nr].limit = TEMP_TO_REG(val);
889 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
890 data->zone[nr].limit);
891
892 /* Update temp_auto_max and temp_auto_range */
893 data->zone[nr].range = RANGE_TO_REG(
894 TEMP_FROM_REG(data->zone[nr].max_desired) -
895 TEMP_FROM_REG(data->zone[nr].limit));
896 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
897 ((data->zone[nr].range & 0x0f) << 4)
898 | (data->autofan[nr].freq & 0x07));
899
900 /* Update temp_auto_hyst and temp_auto_off */
901 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
902 data->zone[nr].limit) - TEMP_FROM_REG(
903 data->zone[nr].off_desired));
904 if ( nr == 0 || nr == 1 ) {
905 lm85_write_value(client, LM85_REG_AFAN_HYST1,
906 (data->zone[0].hyst << 4)
907 | data->zone[1].hyst
908 );
909 } else {
910 lm85_write_value(client, LM85_REG_AFAN_HYST2,
911 (data->zone[2].hyst << 4)
912 );
913 }
914 up(&data->update_lock);
915 return count;
916 }
917 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
918 {
919 struct lm85_data *data = lm85_update_device(dev);
920 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
921 RANGE_FROM_REG(data->zone[nr].range));
922 }
923 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
924 size_t count, int nr)
925 {
926 struct i2c_client *client = to_i2c_client(dev);
927 struct lm85_data *data = i2c_get_clientdata(client);
928 int min;
929 long val = simple_strtol(buf, NULL, 10);
930
931 down(&data->update_lock);
932 min = TEMP_FROM_REG(data->zone[nr].limit);
933 data->zone[nr].max_desired = TEMP_TO_REG(val);
934 data->zone[nr].range = RANGE_TO_REG(
935 val - min);
936 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
937 ((data->zone[nr].range & 0x0f) << 4)
938 | (data->autofan[nr].freq & 0x07));
939 up(&data->update_lock);
940 return count;
941 }
942 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
943 {
944 struct lm85_data *data = lm85_update_device(dev);
945 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
946 }
947 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
948 size_t count, int nr)
949 {
950 struct i2c_client *client = to_i2c_client(dev);
951 struct lm85_data *data = i2c_get_clientdata(client);
952 long val = simple_strtol(buf, NULL, 10);
953
954 down(&data->update_lock);
955 data->zone[nr].critical = TEMP_TO_REG(val);
956 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
957 data->zone[nr].critical);
958 up(&data->update_lock);
959 return count;
960 }
961 #define temp_auto(offset) \
962 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
963 char *buf) \
964 { \
965 return show_temp_auto_temp_off(dev, buf, offset - 1); \
966 } \
967 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
968 const char *buf, size_t count) \
969 { \
970 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \
971 } \
972 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
973 char *buf) \
974 { \
975 return show_temp_auto_temp_min(dev, buf, offset - 1); \
976 } \
977 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
978 const char *buf, size_t count) \
979 { \
980 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \
981 } \
982 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
983 char *buf) \
984 { \
985 return show_temp_auto_temp_max(dev, buf, offset - 1); \
986 } \
987 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
988 const char *buf, size_t count) \
989 { \
990 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \
991 } \
992 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
993 char *buf) \
994 { \
995 return show_temp_auto_temp_crit(dev, buf, offset - 1); \
996 } \
997 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
998 const char *buf, size_t count) \
999 { \
1000 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \
1001 } \
1002 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \
1003 show_temp##offset##_auto_temp_off, \
1004 set_temp##offset##_auto_temp_off); \
1005 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \
1006 show_temp##offset##_auto_temp_min, \
1007 set_temp##offset##_auto_temp_min); \
1008 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \
1009 show_temp##offset##_auto_temp_max, \
1010 set_temp##offset##_auto_temp_max); \
1011 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \
1012 show_temp##offset##_auto_temp_crit, \
1013 set_temp##offset##_auto_temp_crit);
1014 temp_auto(1);
1015 temp_auto(2);
1016 temp_auto(3);
1017
1018 int lm85_attach_adapter(struct i2c_adapter *adapter)
1019 {
1020 if (!(adapter->class & I2C_CLASS_HWMON))
1021 return 0;
1022 return i2c_detect(adapter, &addr_data, lm85_detect);
1023 }
1024
1025 int lm85_detect(struct i2c_adapter *adapter, int address,
1026 int kind)
1027 {
1028 int company, verstep ;
1029 struct i2c_client *new_client = NULL;
1030 struct lm85_data *data;
1031 int err = 0;
1032 const char *type_name = "";
1033
1034 if (i2c_is_isa_adapter(adapter)) {
1035 /* This chip has no ISA interface */
1036 goto ERROR0 ;
1037 };
1038
1039 if (!i2c_check_functionality(adapter,
1040 I2C_FUNC_SMBUS_BYTE_DATA)) {
1041 /* We need to be able to do byte I/O */
1042 goto ERROR0 ;
1043 };
1044
1045 /* OK. For now, we presume we have a valid client. We now create the
1046 client structure, even though we cannot fill it completely yet.
1047 But it allows us to access lm85_{read,write}_value. */
1048
1049 if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1050 err = -ENOMEM;
1051 goto ERROR0;
1052 }
1053 memset(data, 0, sizeof(struct lm85_data));
1054
1055 new_client = &data->client;
1056 i2c_set_clientdata(new_client, data);
1057 new_client->addr = address;
1058 new_client->adapter = adapter;
1059 new_client->driver = &lm85_driver;
1060 new_client->flags = 0;
1061
1062 /* Now, we do the remaining detection. */
1063
1064 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1065 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1066
1067 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1068 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1069 i2c_adapter_id(new_client->adapter), new_client->addr,
1070 company, verstep);
1071
1072 /* If auto-detecting, Determine the chip type. */
1073 if (kind <= 0) {
1074 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1075 i2c_adapter_id(adapter), address );
1076 if( company == LM85_COMPANY_NATIONAL
1077 && verstep == LM85_VERSTEP_LM85C ) {
1078 kind = lm85c ;
1079 } else if( company == LM85_COMPANY_NATIONAL
1080 && verstep == LM85_VERSTEP_LM85B ) {
1081 kind = lm85b ;
1082 } else if( company == LM85_COMPANY_NATIONAL
1083 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1084 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1085 " Defaulting to LM85.\n", verstep);
1086 kind = any_chip ;
1087 } else if( company == LM85_COMPANY_ANALOG_DEV
1088 && verstep == LM85_VERSTEP_ADM1027 ) {
1089 kind = adm1027 ;
1090 } else if( company == LM85_COMPANY_ANALOG_DEV
1091 && (verstep == LM85_VERSTEP_ADT7463
1092 || verstep == LM85_VERSTEP_ADT7463C) ) {
1093 kind = adt7463 ;
1094 } else if( company == LM85_COMPANY_ANALOG_DEV
1095 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1096 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1097 " Defaulting to Generic LM85.\n", verstep );
1098 kind = any_chip ;
1099 } else if( company == LM85_COMPANY_SMSC
1100 && (verstep == LM85_VERSTEP_EMC6D100_A0
1101 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1102 /* Unfortunately, we can't tell a '100 from a '101
1103 * from the registers. Since a '101 is a '100
1104 * in a package with fewer pins and therefore no
1105 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1106 * inputs read 0, then it's a '101.
1107 */
1108 kind = emc6d100 ;
1109 } else if( company == LM85_COMPANY_SMSC
1110 && verstep == LM85_VERSTEP_EMC6D102) {
1111 kind = emc6d102 ;
1112 } else if( company == LM85_COMPANY_SMSC
1113 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1114 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1115 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1116 " Defaulting to Generic LM85.\n", verstep );
1117 kind = any_chip ;
1118 } else if( kind == any_chip
1119 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1120 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1121 /* Leave kind as "any_chip" */
1122 } else {
1123 dev_dbg(&adapter->dev, "Autodetection failed\n");
1124 /* Not an LM85 ... */
1125 if( kind == any_chip ) { /* User used force=x,y */
1126 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1127 " found at %d,0x%02x. Try force_lm85c.\n",
1128 i2c_adapter_id(adapter), address );
1129 }
1130 err = 0 ;
1131 goto ERROR1;
1132 }
1133 }
1134
1135 /* Fill in the chip specific driver values */
1136 if ( kind == any_chip ) {
1137 type_name = "lm85";
1138 } else if ( kind == lm85b ) {
1139 type_name = "lm85b";
1140 } else if ( kind == lm85c ) {
1141 type_name = "lm85c";
1142 } else if ( kind == adm1027 ) {
1143 type_name = "adm1027";
1144 } else if ( kind == adt7463 ) {
1145 type_name = "adt7463";
1146 } else if ( kind == emc6d100){
1147 type_name = "emc6d100";
1148 } else if ( kind == emc6d102 ) {
1149 type_name = "emc6d102";
1150 }
1151 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1152
1153 /* Fill in the remaining client fields */
1154 data->type = kind;
1155 data->valid = 0;
1156 init_MUTEX(&data->update_lock);
1157
1158 /* Tell the I2C layer a new client has arrived */
1159 if ((err = i2c_attach_client(new_client)))
1160 goto ERROR1;
1161
1162 /* Set the VRM version */
1163 data->vrm = i2c_which_vrm();
1164
1165 /* Initialize the LM85 chip */
1166 lm85_init_client(new_client);
1167
1168 /* Register sysfs hooks */
1169 device_create_file(&new_client->dev, &dev_attr_fan1_input);
1170 device_create_file(&new_client->dev, &dev_attr_fan2_input);
1171 device_create_file(&new_client->dev, &dev_attr_fan3_input);
1172 device_create_file(&new_client->dev, &dev_attr_fan4_input);
1173 device_create_file(&new_client->dev, &dev_attr_fan1_min);
1174 device_create_file(&new_client->dev, &dev_attr_fan2_min);
1175 device_create_file(&new_client->dev, &dev_attr_fan3_min);
1176 device_create_file(&new_client->dev, &dev_attr_fan4_min);
1177 device_create_file(&new_client->dev, &dev_attr_pwm1);
1178 device_create_file(&new_client->dev, &dev_attr_pwm2);
1179 device_create_file(&new_client->dev, &dev_attr_pwm3);
1180 device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
1181 device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
1182 device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
1183 device_create_file(&new_client->dev, &dev_attr_in0_input);
1184 device_create_file(&new_client->dev, &dev_attr_in1_input);
1185 device_create_file(&new_client->dev, &dev_attr_in2_input);
1186 device_create_file(&new_client->dev, &dev_attr_in3_input);
1187 device_create_file(&new_client->dev, &dev_attr_in4_input);
1188 device_create_file(&new_client->dev, &dev_attr_in0_min);
1189 device_create_file(&new_client->dev, &dev_attr_in1_min);
1190 device_create_file(&new_client->dev, &dev_attr_in2_min);
1191 device_create_file(&new_client->dev, &dev_attr_in3_min);
1192 device_create_file(&new_client->dev, &dev_attr_in4_min);
1193 device_create_file(&new_client->dev, &dev_attr_in0_max);
1194 device_create_file(&new_client->dev, &dev_attr_in1_max);
1195 device_create_file(&new_client->dev, &dev_attr_in2_max);
1196 device_create_file(&new_client->dev, &dev_attr_in3_max);
1197 device_create_file(&new_client->dev, &dev_attr_in4_max);
1198 device_create_file(&new_client->dev, &dev_attr_temp1_input);
1199 device_create_file(&new_client->dev, &dev_attr_temp2_input);
1200 device_create_file(&new_client->dev, &dev_attr_temp3_input);
1201 device_create_file(&new_client->dev, &dev_attr_temp1_min);
1202 device_create_file(&new_client->dev, &dev_attr_temp2_min);
1203 device_create_file(&new_client->dev, &dev_attr_temp3_min);
1204 device_create_file(&new_client->dev, &dev_attr_temp1_max);
1205 device_create_file(&new_client->dev, &dev_attr_temp2_max);
1206 device_create_file(&new_client->dev, &dev_attr_temp3_max);
1207 device_create_file(&new_client->dev, &dev_attr_vrm);
1208 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
1209 device_create_file(&new_client->dev, &dev_attr_alarms);
1210 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels);
1211 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels);
1212 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels);
1213 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min);
1214 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min);
1215 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min);
1216 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl);
1217 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl);
1218 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl);
1219 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq);
1220 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq);
1221 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq);
1222 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off);
1223 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off);
1224 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off);
1225 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min);
1226 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min);
1227 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min);
1228 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max);
1229 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max);
1230 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max);
1231 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit);
1232 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit);
1233 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit);
1234
1235 return 0;
1236
1237 /* Error out and cleanup code */
1238 ERROR1:
1239 kfree(data);
1240 ERROR0:
1241 return err;
1242 }
1243
1244 int lm85_detach_client(struct i2c_client *client)
1245 {
1246 i2c_detach_client(client);
1247 kfree(i2c_get_clientdata(client));
1248 return 0;
1249 }
1250
1251
1252 int lm85_read_value(struct i2c_client *client, u8 reg)
1253 {
1254 int res;
1255
1256 /* What size location is it? */
1257 switch( reg ) {
1258 case LM85_REG_FAN(0) : /* Read WORD data */
1259 case LM85_REG_FAN(1) :
1260 case LM85_REG_FAN(2) :
1261 case LM85_REG_FAN(3) :
1262 case LM85_REG_FAN_MIN(0) :
1263 case LM85_REG_FAN_MIN(1) :
1264 case LM85_REG_FAN_MIN(2) :
1265 case LM85_REG_FAN_MIN(3) :
1266 case LM85_REG_ALARM1 : /* Read both bytes at once */
1267 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1268 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1269 break ;
1270 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1271 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1272 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1273 break ;
1274 default: /* Read BYTE data */
1275 res = i2c_smbus_read_byte_data(client, reg);
1276 break ;
1277 }
1278
1279 return res ;
1280 }
1281
1282 int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1283 {
1284 int res ;
1285
1286 switch( reg ) {
1287 case LM85_REG_FAN(0) : /* Write WORD data */
1288 case LM85_REG_FAN(1) :
1289 case LM85_REG_FAN(2) :
1290 case LM85_REG_FAN(3) :
1291 case LM85_REG_FAN_MIN(0) :
1292 case LM85_REG_FAN_MIN(1) :
1293 case LM85_REG_FAN_MIN(2) :
1294 case LM85_REG_FAN_MIN(3) :
1295 /* NOTE: ALARM is read only, so not included here */
1296 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1297 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1298 break ;
1299 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1300 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1301 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1302 break ;
1303 default: /* Write BYTE data */
1304 res = i2c_smbus_write_byte_data(client, reg, value);
1305 break ;
1306 }
1307
1308 return res ;
1309 }
1310
1311 void lm85_init_client(struct i2c_client *client)
1312 {
1313 int value;
1314 struct lm85_data *data = i2c_get_clientdata(client);
1315
1316 dev_dbg(&client->dev, "Initializing device\n");
1317
1318 /* Warn if part was not "READY" */
1319 value = lm85_read_value(client, LM85_REG_CONFIG);
1320 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1321 if( value & 0x02 ) {
1322 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1323 i2c_adapter_id(client->adapter), client->addr );
1324 };
1325 if( ! (value & 0x04) ) {
1326 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1327 i2c_adapter_id(client->adapter), client->addr );
1328 };
1329 if( value & 0x10
1330 && ( data->type == adm1027
1331 || data->type == adt7463 ) ) {
1332 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1333 "Please report this to the lm85 maintainer.\n",
1334 i2c_adapter_id(client->adapter), client->addr );
1335 };
1336
1337 /* WE INTENTIONALLY make no changes to the limits,
1338 * offsets, pwms, fans and zones. If they were
1339 * configured, we don't want to mess with them.
1340 * If they weren't, the default is 100% PWM, no
1341 * control and will suffice until 'sensors -s'
1342 * can be run by the user.
1343 */
1344
1345 /* Start monitoring */
1346 value = lm85_read_value(client, LM85_REG_CONFIG);
1347 /* Try to clear LOCK, Set START, save everything else */
1348 value = (value & ~ 0x02) | 0x01 ;
1349 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1350 lm85_write_value(client, LM85_REG_CONFIG, value);
1351 }
1352
1353 static struct lm85_data *lm85_update_device(struct device *dev)
1354 {
1355 struct i2c_client *client = to_i2c_client(dev);
1356 struct lm85_data *data = i2c_get_clientdata(client);
1357 int i;
1358
1359 down(&data->update_lock);
1360
1361 if ( !data->valid ||
1362 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1363 /* Things that change quickly */
1364 dev_dbg(&client->dev, "Reading sensor values\n");
1365
1366 /* Have to read extended bits first to "freeze" the
1367 * more significant bits that are read later.
1368 */
1369 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1370 int ext1 = lm85_read_value(client,
1371 ADM1027_REG_EXTEND_ADC1);
1372 int ext2 = lm85_read_value(client,
1373 ADM1027_REG_EXTEND_ADC2);
1374 int val = (ext1 << 8) + ext2;
1375
1376 for(i = 0; i <= 4; i++)
1377 data->in_ext[i] = (val>>(i * 2))&0x03;
1378
1379 for(i = 0; i <= 2; i++)
1380 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03;
1381 }
1382
1383 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1384 the emc6d102 and 2 in the adt7463 and adm1027. In all
1385 other chips ext is always 0 and the value of scale is
1386 irrelevant. So it is left in 4*/
1387 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4;
1388
1389 for (i = 0; i <= 4; ++i) {
1390 data->in[i] =
1391 lm85_read_value(client, LM85_REG_IN(i));
1392 }
1393
1394 for (i = 0; i <= 3; ++i) {
1395 data->fan[i] =
1396 lm85_read_value(client, LM85_REG_FAN(i));
1397 }
1398
1399 for (i = 0; i <= 2; ++i) {
1400 data->temp[i] =
1401 lm85_read_value(client, LM85_REG_TEMP(i));
1402 }
1403
1404 for (i = 0; i <= 2; ++i) {
1405 data->pwm[i] =
1406 lm85_read_value(client, LM85_REG_PWM(i));
1407 }
1408
1409 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1410
1411 if ( data->type == adt7463 ) {
1412 if( data->therm_total < ULONG_MAX - 256 ) {
1413 data->therm_total +=
1414 lm85_read_value(client, ADT7463_REG_THERM );
1415 }
1416 } else if ( data->type == emc6d100 ) {
1417 /* Three more voltage sensors */
1418 for (i = 5; i <= 7; ++i) {
1419 data->in[i] =
1420 lm85_read_value(client, EMC6D100_REG_IN(i));
1421 }
1422 /* More alarm bits */
1423 data->alarms |=
1424 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1425 } else if (data->type == emc6d102 ) {
1426 /* Have to read LSB bits after the MSB ones because
1427 the reading of the MSB bits has frozen the
1428 LSBs (backward from the ADM1027).
1429 */
1430 int ext1 = lm85_read_value(client,
1431 EMC6D102_REG_EXTEND_ADC1);
1432 int ext2 = lm85_read_value(client,
1433 EMC6D102_REG_EXTEND_ADC2);
1434 int ext3 = lm85_read_value(client,
1435 EMC6D102_REG_EXTEND_ADC3);
1436 int ext4 = lm85_read_value(client,
1437 EMC6D102_REG_EXTEND_ADC4);
1438 data->in_ext[0] = ext3 & 0x0f;
1439 data->in_ext[1] = ext4 & 0x0f;
1440 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1441 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1442 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1443
1444 data->temp_ext[0] = ext1 & 0x0f;
1445 data->temp_ext[1] = ext2 & 0x0f;
1446 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1447 }
1448
1449 data->last_reading = jiffies ;
1450 }; /* last_reading */
1451
1452 if ( !data->valid ||
1453 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1454 /* Things that don't change often */
1455 dev_dbg(&client->dev, "Reading config values\n");
1456
1457 for (i = 0; i <= 4; ++i) {
1458 data->in_min[i] =
1459 lm85_read_value(client, LM85_REG_IN_MIN(i));
1460 data->in_max[i] =
1461 lm85_read_value(client, LM85_REG_IN_MAX(i));
1462 }
1463
1464 if ( data->type == emc6d100 ) {
1465 for (i = 5; i <= 7; ++i) {
1466 data->in_min[i] =
1467 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1468 data->in_max[i] =
1469 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1470 }
1471 }
1472
1473 for (i = 0; i <= 3; ++i) {
1474 data->fan_min[i] =
1475 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1476 }
1477
1478 for (i = 0; i <= 2; ++i) {
1479 data->temp_min[i] =
1480 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1481 data->temp_max[i] =
1482 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1483 }
1484
1485 data->vid = lm85_read_value(client, LM85_REG_VID);
1486
1487 for (i = 0; i <= 2; ++i) {
1488 int val ;
1489 data->autofan[i].config =
1490 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1491 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1492 data->autofan[i].freq = val & 0x07 ;
1493 data->zone[i].range = (val >> 4) & 0x0f ;
1494 data->autofan[i].min_pwm =
1495 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1496 data->zone[i].limit =
1497 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1498 data->zone[i].critical =
1499 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1500 }
1501
1502 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1503 data->smooth[0] = i & 0x0f ;
1504 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1505 data->autofan[0].min_off = (i & 0x20) != 0 ;
1506 data->autofan[1].min_off = (i & 0x40) != 0 ;
1507 data->autofan[2].min_off = (i & 0x80) != 0 ;
1508 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1509 data->smooth[1] = (i>>4) & 0x0f ;
1510 data->smooth[2] = i & 0x0f ;
1511
1512 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1513 data->zone[0].hyst = (i>>4) & 0x0f ;
1514 data->zone[1].hyst = i & 0x0f ;
1515
1516 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1517 data->zone[2].hyst = (i>>4) & 0x0f ;
1518
1519 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1520 data->tach_mode = lm85_read_value(client,
1521 LM85_REG_TACH_MODE );
1522 data->spinup_ctl = lm85_read_value(client,
1523 LM85_REG_SPINUP_CTL );
1524 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1525 if ( data->type == adt7463 ) {
1526 for (i = 0; i <= 2; ++i) {
1527 data->oppoint[i] = lm85_read_value(client,
1528 ADT7463_REG_OPPOINT(i) );
1529 }
1530 data->tmin_ctl = lm85_read_value(client,
1531 ADT7463_REG_TMIN_CTL1 );
1532 data->therm_limit = lm85_read_value(client,
1533 ADT7463_REG_THERM_LIMIT );
1534 }
1535 for (i = 0; i <= 2; ++i) {
1536 data->temp_offset[i] = lm85_read_value(client,
1537 ADM1027_REG_TEMP_OFFSET(i) );
1538 }
1539 data->tach_mode = lm85_read_value(client,
1540 ADM1027_REG_CONFIG3 );
1541 data->fan_ppr = lm85_read_value(client,
1542 ADM1027_REG_FAN_PPR );
1543 }
1544
1545 data->last_config = jiffies;
1546 }; /* last_config */
1547
1548 data->valid = 1;
1549
1550 up(&data->update_lock);
1551
1552 return data;
1553 }
1554
1555
1556 static int __init sm_lm85_init(void)
1557 {
1558 return i2c_add_driver(&lm85_driver);
1559 }
1560
1561 static void __exit sm_lm85_exit(void)
1562 {
1563 i2c_del_driver(&lm85_driver);
1564 }
1565
1566 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1567 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1568 * post 2.7.0 CVS changes.
1569 */
1570 MODULE_LICENSE("GPL");
1571 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1572 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1573
1574 module_init(sm_lm85_init);
1575 module_exit(sm_lm85_exit);
linux-next