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Linux-2.6.12-rc2
[linux-2.6-block.git] / drivers / i2c / chips / lm85.c
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1da177e4
LT		 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/config.h>
27#include <linux/module.h>
28#include <linux/init.h>
29#include <linux/slab.h>
30#include <linux/jiffies.h>
31#include <linux/i2c.h>
32#include <linux/i2c-sensor.h>
33#include <linux/i2c-vid.h>
34
35/* Addresses to scan */
36static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
37static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
38
39/* Insmod parameters */
40SENSORS_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102);
41
42/* The LM85 registers */
43
44#define LM85_REG_IN(nr) (0x20 + (nr))
45#define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
46#define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
47
48#define LM85_REG_TEMP(nr) (0x25 + (nr))
49#define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
50#define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
51
52/* Fan speeds are LSB, MSB (2 bytes) */
53#define LM85_REG_FAN(nr) (0x28 + (nr) *2)
54#define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2)
55
56#define LM85_REG_PWM(nr) (0x30 + (nr))
57
58#define ADT7463_REG_OPPOINT(nr) (0x33 + (nr))
59
60#define ADT7463_REG_TMIN_CTL1 0x36
61#define ADT7463_REG_TMIN_CTL2 0x37
62
63#define LM85_REG_DEVICE 0x3d
64#define LM85_REG_COMPANY 0x3e
65#define LM85_REG_VERSTEP 0x3f
66/* These are the recognized values for the above regs */
67#define LM85_DEVICE_ADX 0x27
68#define LM85_COMPANY_NATIONAL 0x01
69#define LM85_COMPANY_ANALOG_DEV 0x41
70#define LM85_COMPANY_SMSC 0x5c
71#define LM85_VERSTEP_VMASK 0xf0
72#define LM85_VERSTEP_GENERIC 0x60
73#define LM85_VERSTEP_LM85C 0x60
74#define LM85_VERSTEP_LM85B 0x62
75#define LM85_VERSTEP_ADM1027 0x60
76#define LM85_VERSTEP_ADT7463 0x62
77#define LM85_VERSTEP_ADT7463C 0x6A
78#define LM85_VERSTEP_EMC6D100_A0 0x60
79#define LM85_VERSTEP_EMC6D100_A1 0x61
80#define LM85_VERSTEP_EMC6D102 0x65
81
82#define LM85_REG_CONFIG 0x40
83
84#define LM85_REG_ALARM1 0x41
85#define LM85_REG_ALARM2 0x42
86
87#define LM85_REG_VID 0x43
88
89/* Automated FAN control */
90#define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
91#define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
92#define LM85_REG_AFAN_SPIKE1 0x62
93#define LM85_REG_AFAN_SPIKE2 0x63
94#define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
95#define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
96#define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
97#define LM85_REG_AFAN_HYST1 0x6d
98#define LM85_REG_AFAN_HYST2 0x6e
99
100#define LM85_REG_TACH_MODE 0x74
101#define LM85_REG_SPINUP_CTL 0x75
102
103#define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr))
104#define ADM1027_REG_CONFIG2 0x73
105#define ADM1027_REG_INTMASK1 0x74
106#define ADM1027_REG_INTMASK2 0x75
107#define ADM1027_REG_EXTEND_ADC1 0x76
108#define ADM1027_REG_EXTEND_ADC2 0x77
109#define ADM1027_REG_CONFIG3 0x78
110#define ADM1027_REG_FAN_PPR 0x7b
111
112#define ADT7463_REG_THERM 0x79
113#define ADT7463_REG_THERM_LIMIT 0x7A
114
115#define EMC6D100_REG_ALARM3 0x7d
116/* IN5, IN6 and IN7 */
117#define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5))
118#define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2)
119#define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2)
120#define EMC6D102_REG_EXTEND_ADC1 0x85
121#define EMC6D102_REG_EXTEND_ADC2 0x86
122#define EMC6D102_REG_EXTEND_ADC3 0x87
123#define EMC6D102_REG_EXTEND_ADC4 0x88
124
125#define LM85_ALARM_IN0 0x0001
126#define LM85_ALARM_IN1 0x0002
127#define LM85_ALARM_IN2 0x0004
128#define LM85_ALARM_IN3 0x0008
129#define LM85_ALARM_TEMP1 0x0010
130#define LM85_ALARM_TEMP2 0x0020
131#define LM85_ALARM_TEMP3 0x0040
132#define LM85_ALARM_ALARM2 0x0080
133#define LM85_ALARM_IN4 0x0100
134#define LM85_ALARM_RESERVED 0x0200
135#define LM85_ALARM_FAN1 0x0400
136#define LM85_ALARM_FAN2 0x0800
137#define LM85_ALARM_FAN3 0x1000
138#define LM85_ALARM_FAN4 0x2000
139#define LM85_ALARM_TEMP1_FAULT 0x4000
140#define LM85_ALARM_TEMP3_FAULT 0x8000
141
142
143/* Conversions. Rounding and limit checking is only done on the TO_REG
144 variants. Note that you should be a bit careful with which arguments
145 these macros are called: arguments may be evaluated more than once.
146 */
147
148/* IN are scaled acording to built-in resistors */
149static int lm85_scaling[] = { /* .001 Volts */
150 2500, 2250, 3300, 5000, 12000,
151 3300, 1500, 1800 /*EMC6D100*/
152 };
153#define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from))
154
155#define INS_TO_REG(n,val) \
156 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255)
157
158#define INSEXT_FROM_REG(n,val,ext,scale) \
159 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n])
160
161#define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1)
162
163/* FAN speed is measured using 90kHz clock */
164#define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
165#define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val))
166
167/* Temperature is reported in .001 degC increments */
168#define TEMP_TO_REG(val) \
169 SENSORS_LIMIT(SCALE(val,1000,1),-127,127)
170#define TEMPEXT_FROM_REG(val,ext,scale) \
171 SCALE((val)*scale + (ext),scale,1000)
172#define TEMP_FROM_REG(val) \
173 TEMPEXT_FROM_REG(val,0,1)
174
175#define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
176#define PWM_FROM_REG(val) (val)
177
178
179/* ZONEs have the following parameters:
180 * Limit (low) temp, 1. degC
181 * Hysteresis (below limit), 1. degC (0-15)
182 * Range of speed control, .1 degC (2-80)
183 * Critical (high) temp, 1. degC
184 *
185 * FAN PWMs have the following parameters:
186 * Reference Zone, 1, 2, 3, etc.
187 * Spinup time, .05 sec
188 * PWM value at limit/low temp, 1 count
189 * PWM Frequency, 1. Hz
190 * PWM is Min or OFF below limit, flag
191 * Invert PWM output, flag
192 *
193 * Some chips filter the temp, others the fan.
194 * Filter constant (or disabled) .1 seconds
195 */
196
197/* These are the zone temperature range encodings in .001 degree C */
198static int lm85_range_map[] = {
199 2000, 2500, 3300, 4000, 5000, 6600,
200 8000, 10000, 13300, 16000, 20000, 26600,
201 32000, 40000, 53300, 80000
202 };
203static int RANGE_TO_REG( int range )
204{
205 int i;
206
207 if ( range < lm85_range_map[0] ) {
208 return 0 ;
209 } else if ( range > lm85_range_map[15] ) {
210 return 15 ;
211 } else { /* find closest match */
212 for ( i = 14 ; i >= 0 ; --i ) {
213 if ( range > lm85_range_map[i] ) { /* range bracketed */
214 if ((lm85_range_map[i+1] - range) <
215 (range - lm85_range_map[i])) {
216 i++;
217 break;
218 }
219 break;
220 }
221 }
222 }
223 return( i & 0x0f );
224}
225#define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
226
227/* These are the Acoustic Enhancement, or Temperature smoothing encodings
228 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
229 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
230 * is ignored, or set to 0.
231 */
232/* These are the PWM frequency encodings */
233static int lm85_freq_map[] = { /* .1 Hz */
234 100, 150, 230, 300, 380, 470, 620, 940
235 };
236static int FREQ_TO_REG( int freq )
237{
238 int i;
239
240 if( freq >= lm85_freq_map[7] ) { return 7 ; }
241 for( i = 0 ; i < 7 ; ++i )
242 if( freq <= lm85_freq_map[i] )
243 break ;
244 return( i & 0x07 );
245}
246#define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
247
248/* Since we can't use strings, I'm abusing these numbers
249 * to stand in for the following meanings:
250 * 1 -- PWM responds to Zone 1
251 * 2 -- PWM responds to Zone 2
252 * 3 -- PWM responds to Zone 3
253 * 23 -- PWM responds to the higher temp of Zone 2 or 3
254 * 123 -- PWM responds to highest of Zone 1, 2, or 3
255 * 0 -- PWM is always at 0% (ie, off)
256 * -1 -- PWM is always at 100%
257 * -2 -- PWM responds to manual control
258 */
259
260static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
261#define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
262
263static int ZONE_TO_REG( int zone )
264{
265 int i;
266
267 for( i = 0 ; i <= 7 ; ++i )
268 if( zone == lm85_zone_map[i] )
269 break ;
270 if( i > 7 ) /* Not found. */
271 i = 3; /* Always 100% */
272 return( (i & 0x07)<<5 );
273}
274
275#define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
276#define HYST_FROM_REG(val) ((val)*1000)
277
278#define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
279#define OFFSET_FROM_REG(val) ((val)*25)
280
281#define PPR_MASK(fan) (0x03<<(fan *2))
282#define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
283#define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
284
285/* i2c-vid.h defines vid_from_reg() */
286#define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm)))
287
288#define ALARMS_FROM_REG(val) (val)
289
290/* Unlike some other drivers we DO NOT set initial limits. Use
291 * the config file to set limits. Some users have reported
292 * motherboards shutting down when we set limits in a previous
293 * version of the driver.
294 */
295
296/* Chip sampling rates
297 *
298 * Some sensors are not updated more frequently than once per second
299 * so it doesn't make sense to read them more often than that.
300 * We cache the results and return the saved data if the driver
301 * is called again before a second has elapsed.
302 *
303 * Also, there is significant configuration data for this chip
304 * given the automatic PWM fan control that is possible. There
305 * are about 47 bytes of config data to only 22 bytes of actual
306 * readings. So, we keep the config data up to date in the cache
307 * when it is written and only sample it once every 1 *minute*
308 */
309#define LM85_DATA_INTERVAL (HZ + HZ / 2)
310#define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
311
312/* For each registered LM85, we need to keep some data in memory. That
313 data is pointed to by lm85_list[NR]->data. The structure itself is
314 dynamically allocated, at the same time when a new lm85 client is
315 allocated. */
316
317/* LM85 can automatically adjust fan speeds based on temperature
318 * This structure encapsulates an entire Zone config. There are
319 * three zones (one for each temperature input) on the lm85
320 */
321struct lm85_zone {
322 s8 limit; /* Low temp limit */
323 u8 hyst; /* Low limit hysteresis. (0-15) */
324 u8 range; /* Temp range, encoded */
325 s8 critical; /* "All fans ON" temp limit */
326 u8 off_desired; /* Actual "off" temperature specified. Preserved
327 * to prevent "drift" as other autofan control
328 * values change.
329 */
330 u8 max_desired; /* Actual "max" temperature specified. Preserved
331 * to prevent "drift" as other autofan control
332 * values change.
333 */
334};
335
336struct lm85_autofan {
337 u8 config; /* Register value */
338 u8 freq; /* PWM frequency, encoded */
339 u8 min_pwm; /* Minimum PWM value, encoded */
340 u8 min_off; /* Min PWM or OFF below "limit", flag */
341};
342
343struct lm85_data {
344 struct i2c_client client;
345 struct semaphore lock;
346 enum chips type;
347
348 struct semaphore update_lock;
349 int valid; /* !=0 if following fields are valid */
350 unsigned long last_reading; /* In jiffies */
351 unsigned long last_config; /* In jiffies */
352
353 u8 in[8]; /* Register value */
354 u8 in_max[8]; /* Register value */
355 u8 in_min[8]; /* Register value */
356 s8 temp[3]; /* Register value */
357 s8 temp_min[3]; /* Register value */
358 s8 temp_max[3]; /* Register value */
359 s8 temp_offset[3]; /* Register value */
360 u16 fan[4]; /* Register value */
361 u16 fan_min[4]; /* Register value */
362 u8 pwm[3]; /* Register value */
363 u8 spinup_ctl; /* Register encoding, combined */
364 u8 tach_mode; /* Register encoding, combined */
365 u8 temp_ext[3]; /* Decoded values */
366 u8 in_ext[8]; /* Decoded values */
367 u8 adc_scale; /* ADC Extended bits scaling factor */
368 u8 fan_ppr; /* Register value */
369 u8 smooth[3]; /* Register encoding */
370 u8 vid; /* Register value */
371 u8 vrm; /* VRM version */
372 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
373 u8 oppoint[3]; /* Register value */
374 u16 tmin_ctl; /* Register value */
375 unsigned long therm_total; /* Cummulative therm count */
376 u8 therm_limit; /* Register value */
377 u32 alarms; /* Register encoding, combined */
378 struct lm85_autofan autofan[3];
379 struct lm85_zone zone[3];
380};
381
382static int lm85_attach_adapter(struct i2c_adapter *adapter);
383static int lm85_detect(struct i2c_adapter *adapter, int address,
384 int kind);
385static int lm85_detach_client(struct i2c_client *client);
386
387static int lm85_read_value(struct i2c_client *client, u8 register);
388static int lm85_write_value(struct i2c_client *client, u8 register, int value);
389static struct lm85_data *lm85_update_device(struct device *dev);
390static void lm85_init_client(struct i2c_client *client);
391
392
393static struct i2c_driver lm85_driver = {
394 .owner = THIS_MODULE,
395 .name = "lm85",
396 .id = I2C_DRIVERID_LM85,
397 .flags = I2C_DF_NOTIFY,
398 .attach_adapter = lm85_attach_adapter,
399 .detach_client = lm85_detach_client,
400};
401
402
403/* 4 Fans */
404static ssize_t show_fan(struct device *dev, char *buf, int nr)
405{
406 struct lm85_data *data = lm85_update_device(dev);
407 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
408}
409static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
410{
411 struct lm85_data *data = lm85_update_device(dev);
412 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
413}
414static ssize_t set_fan_min(struct device *dev, const char *buf,
415 size_t count, int nr)
416{
417 struct i2c_client *client = to_i2c_client(dev);
418 struct lm85_data *data = i2c_get_clientdata(client);
419 long val = simple_strtol(buf, NULL, 10);
420
421 down(&data->update_lock);
422 data->fan_min[nr] = FAN_TO_REG(val);
423 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
424 up(&data->update_lock);
425 return count;
426}
427
428#define show_fan_offset(offset) \
429static ssize_t show_fan_##offset (struct device *dev, char *buf) \
430{ \
431 return show_fan(dev, buf, offset - 1); \
432} \
433static ssize_t show_fan_##offset##_min (struct device *dev, char *buf) \
434{ \
435 return show_fan_min(dev, buf, offset - 1); \
436} \
437static ssize_t set_fan_##offset##_min (struct device *dev, \
438 const char *buf, size_t count) \
439{ \
440 return set_fan_min(dev, buf, count, offset - 1); \
441} \
442static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
443 NULL); \
444static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
445 show_fan_##offset##_min, set_fan_##offset##_min);
446
447show_fan_offset(1);
448show_fan_offset(2);
449show_fan_offset(3);
450show_fan_offset(4);
451
452/* vid, vrm, alarms */
453
454static ssize_t show_vid_reg(struct device *dev, char *buf)
455{
456 struct lm85_data *data = lm85_update_device(dev);
457 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
458}
459
460static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
461
462static ssize_t show_vrm_reg(struct device *dev, char *buf)
463{
464 struct lm85_data *data = lm85_update_device(dev);
465 return sprintf(buf, "%ld\n", (long) data->vrm);
466}
467
468static ssize_t store_vrm_reg(struct device *dev, const char *buf, size_t count)
469{
470 struct i2c_client *client = to_i2c_client(dev);
471 struct lm85_data *data = i2c_get_clientdata(client);
472 u32 val;
473
474 val = simple_strtoul(buf, NULL, 10);
475 data->vrm = val;
476 return count;
477}
478
479static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
480
481static ssize_t show_alarms_reg(struct device *dev, char *buf)
482{
483 struct lm85_data *data = lm85_update_device(dev);
484 return sprintf(buf, "%ld\n", (long) ALARMS_FROM_REG(data->alarms));
485}
486
487static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
488
489/* pwm */
490
491static ssize_t show_pwm(struct device *dev, char *buf, int nr)
492{
493 struct lm85_data *data = lm85_update_device(dev);
494 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
495}
496static ssize_t set_pwm(struct device *dev, const char *buf,
497 size_t count, int nr)
498{
499 struct i2c_client *client = to_i2c_client(dev);
500 struct lm85_data *data = i2c_get_clientdata(client);
501 long val = simple_strtol(buf, NULL, 10);
502
503 down(&data->update_lock);
504 data->pwm[nr] = PWM_TO_REG(val);
505 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
506 up(&data->update_lock);
507 return count;
508}
509static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
510{
511 struct lm85_data *data = lm85_update_device(dev);
512 int pwm_zone;
513
514 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
515 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
516}
517
518#define show_pwm_reg(offset) \
519static ssize_t show_pwm_##offset (struct device *dev, char *buf) \
520{ \
521 return show_pwm(dev, buf, offset - 1); \
522} \
523static ssize_t set_pwm_##offset (struct device *dev, \
524 const char *buf, size_t count) \
525{ \
526 return set_pwm(dev, buf, count, offset - 1); \
527} \
528static ssize_t show_pwm_enable##offset (struct device *dev, char *buf) \
529{ \
530 return show_pwm_enable(dev, buf, offset - 1); \
531} \
532static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
533 show_pwm_##offset, set_pwm_##offset); \
534static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \
535 show_pwm_enable##offset, NULL);
536
537show_pwm_reg(1);
538show_pwm_reg(2);
539show_pwm_reg(3);
540
541/* Voltages */
542
543static ssize_t show_in(struct device *dev, char *buf, int nr)
544{
545 struct lm85_data *data = lm85_update_device(dev);
546 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
547 data->in[nr],
548 data->in_ext[nr],
549 data->adc_scale) );
550}
551static ssize_t show_in_min(struct device *dev, char *buf, int nr)
552{
553 struct lm85_data *data = lm85_update_device(dev);
554 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
555}
556static ssize_t set_in_min(struct device *dev, const char *buf,
557 size_t count, int nr)
558{
559 struct i2c_client *client = to_i2c_client(dev);
560 struct lm85_data *data = i2c_get_clientdata(client);
561 long val = simple_strtol(buf, NULL, 10);
562
563 down(&data->update_lock);
564 data->in_min[nr] = INS_TO_REG(nr, val);
565 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
566 up(&data->update_lock);
567 return count;
568}
569static ssize_t show_in_max(struct device *dev, char *buf, int nr)
570{
571 struct lm85_data *data = lm85_update_device(dev);
572 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
573}
574static ssize_t set_in_max(struct device *dev, const char *buf,
575 size_t count, int nr)
576{
577 struct i2c_client *client = to_i2c_client(dev);
578 struct lm85_data *data = i2c_get_clientdata(client);
579 long val = simple_strtol(buf, NULL, 10);
580
581 down(&data->update_lock);
582 data->in_max[nr] = INS_TO_REG(nr, val);
583 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
584 up(&data->update_lock);
585 return count;
586}
587#define show_in_reg(offset) \
588static ssize_t show_in_##offset (struct device *dev, char *buf) \
589{ \
590 return show_in(dev, buf, offset); \
591} \
592static ssize_t show_in_##offset##_min (struct device *dev, char *buf) \
593{ \
594 return show_in_min(dev, buf, offset); \
595} \
596static ssize_t show_in_##offset##_max (struct device *dev, char *buf) \
597{ \
598 return show_in_max(dev, buf, offset); \
599} \
600static ssize_t set_in_##offset##_min (struct device *dev, \
601 const char *buf, size_t count) \
602{ \
603 return set_in_min(dev, buf, count, offset); \
604} \
605static ssize_t set_in_##offset##_max (struct device *dev, \
606 const char *buf, size_t count) \
607{ \
608 return set_in_max(dev, buf, count, offset); \
609} \
610static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \
611 NULL); \
612static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
613 show_in_##offset##_min, set_in_##offset##_min); \
614static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
615 show_in_##offset##_max, set_in_##offset##_max);
616
617show_in_reg(0);
618show_in_reg(1);
619show_in_reg(2);
620show_in_reg(3);
621show_in_reg(4);
622
623/* Temps */
624
625static ssize_t show_temp(struct device *dev, char *buf, int nr)
626{
627 struct lm85_data *data = lm85_update_device(dev);
628 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
629 data->temp_ext[nr],
630 data->adc_scale) );
631}
632static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
633{
634 struct lm85_data *data = lm85_update_device(dev);
635 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
636}
637static ssize_t set_temp_min(struct device *dev, const char *buf,
638 size_t count, int nr)
639{
640 struct i2c_client *client = to_i2c_client(dev);
641 struct lm85_data *data = i2c_get_clientdata(client);
642 long val = simple_strtol(buf, NULL, 10);
643
644 down(&data->update_lock);
645 data->temp_min[nr] = TEMP_TO_REG(val);
646 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
647 up(&data->update_lock);
648 return count;
649}
650static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
651{
652 struct lm85_data *data = lm85_update_device(dev);
653 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
654}
655static ssize_t set_temp_max(struct device *dev, const char *buf,
656 size_t count, int nr)
657{
658 struct i2c_client *client = to_i2c_client(dev);
659 struct lm85_data *data = i2c_get_clientdata(client);
660 long val = simple_strtol(buf, NULL, 10);
661
662 down(&data->update_lock);
663 data->temp_max[nr] = TEMP_TO_REG(val);
664 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
665 up(&data->update_lock);
666 return count;
667}
668#define show_temp_reg(offset) \
669static ssize_t show_temp_##offset (struct device *dev, char *buf) \
670{ \
671 return show_temp(dev, buf, offset - 1); \
672} \
673static ssize_t show_temp_##offset##_min (struct device *dev, char *buf) \
674{ \
675 return show_temp_min(dev, buf, offset - 1); \
676} \
677static ssize_t show_temp_##offset##_max (struct device *dev, char *buf) \
678{ \
679 return show_temp_max(dev, buf, offset - 1); \
680} \
681static ssize_t set_temp_##offset##_min (struct device *dev, \
682 const char *buf, size_t count) \
683{ \
684 return set_temp_min(dev, buf, count, offset - 1); \
685} \
686static ssize_t set_temp_##offset##_max (struct device *dev, \
687 const char *buf, size_t count) \
688{ \
689 return set_temp_max(dev, buf, count, offset - 1); \
690} \
691static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
692 NULL); \
693static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
694 show_temp_##offset##_min, set_temp_##offset##_min); \
695static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
696 show_temp_##offset##_max, set_temp_##offset##_max);
697
698show_temp_reg(1);
699show_temp_reg(2);
700show_temp_reg(3);
701
702
703/* Automatic PWM control */
704
705static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
706{
707 struct lm85_data *data = lm85_update_device(dev);
708 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
709}
710static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
711 size_t count, int nr)
712{
713 struct i2c_client *client = to_i2c_client(dev);
714 struct lm85_data *data = i2c_get_clientdata(client);
715 long val = simple_strtol(buf, NULL, 10);
716
717 down(&data->update_lock);
718 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
719 | ZONE_TO_REG(val) ;
720 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
721 data->autofan[nr].config);
722 up(&data->update_lock);
723 return count;
724}
725static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
726{
727 struct lm85_data *data = lm85_update_device(dev);
728 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
729}
730static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
731 size_t count, int nr)
732{
733 struct i2c_client *client = to_i2c_client(dev);
734 struct lm85_data *data = i2c_get_clientdata(client);
735 long val = simple_strtol(buf, NULL, 10);
736
737 down(&data->update_lock);
738 data->autofan[nr].min_pwm = PWM_TO_REG(val);
739 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
740 data->autofan[nr].min_pwm);
741 up(&data->update_lock);
742 return count;
743}
744static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
745{
746 struct lm85_data *data = lm85_update_device(dev);
747 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
748}
749static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
750 size_t count, int nr)
751{
752 struct i2c_client *client = to_i2c_client(dev);
753 struct lm85_data *data = i2c_get_clientdata(client);
754 long val = simple_strtol(buf, NULL, 10);
755
756 down(&data->update_lock);
757 data->autofan[nr].min_off = val;
758 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
759 | data->syncpwm3
760 | (data->autofan[0].min_off ? 0x20 : 0)
761 | (data->autofan[1].min_off ? 0x40 : 0)
762 | (data->autofan[2].min_off ? 0x80 : 0)
763 );
764 up(&data->update_lock);
765 return count;
766}
767static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
768{
769 struct lm85_data *data = lm85_update_device(dev);
770 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
771}
772static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
773 size_t count, int nr)
774{
775 struct i2c_client *client = to_i2c_client(dev);
776 struct lm85_data *data = i2c_get_clientdata(client);
777 long val = simple_strtol(buf, NULL, 10);
778
779 down(&data->update_lock);
780 data->autofan[nr].freq = FREQ_TO_REG(val);
781 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
782 (data->zone[nr].range << 4)
783 | data->autofan[nr].freq
784 );
785 up(&data->update_lock);
786 return count;
787}
788#define pwm_auto(offset) \
789static ssize_t show_pwm##offset##_auto_channels (struct device *dev, \
790 char *buf) \
791{ \
792 return show_pwm_auto_channels(dev, buf, offset - 1); \
793} \
794static ssize_t set_pwm##offset##_auto_channels (struct device *dev, \
795 const char *buf, size_t count) \
796{ \
797 return set_pwm_auto_channels(dev, buf, count, offset - 1); \
798} \
799static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, \
800 char *buf) \
801{ \
802 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \
803} \
804static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, \
805 const char *buf, size_t count) \
806{ \
807 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \
808} \
809static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, \
810 char *buf) \
811{ \
812 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \
813} \
814static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, \
815 const char *buf, size_t count) \
816{ \
817 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \
818} \
819static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, \
820 char *buf) \
821{ \
822 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \
823} \
824static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, \
825 const char *buf, size_t count) \
826{ \
827 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \
828} \
829static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \
830 show_pwm##offset##_auto_channels, \
831 set_pwm##offset##_auto_channels); \
832static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \
833 show_pwm##offset##_auto_pwm_min, \
834 set_pwm##offset##_auto_pwm_min); \
835static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \
836 show_pwm##offset##_auto_pwm_minctl, \
837 set_pwm##offset##_auto_pwm_minctl); \
838static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \
839 show_pwm##offset##_auto_pwm_freq, \
840 set_pwm##offset##_auto_pwm_freq);
841pwm_auto(1);
842pwm_auto(2);
843pwm_auto(3);
844
845/* Temperature settings for automatic PWM control */
846
847static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
848{
849 struct lm85_data *data = lm85_update_device(dev);
850 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
851 HYST_FROM_REG(data->zone[nr].hyst));
852}
853static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
854 size_t count, int nr)
855{
856 struct i2c_client *client = to_i2c_client(dev);
857 struct lm85_data *data = i2c_get_clientdata(client);
858 int min;
859 long val = simple_strtol(buf, NULL, 10);
860
861 down(&data->update_lock);
862 min = TEMP_FROM_REG(data->zone[nr].limit);
863 data->zone[nr].off_desired = TEMP_TO_REG(val);
864 data->zone[nr].hyst = HYST_TO_REG(min - val);
865 if ( nr == 0 || nr == 1 ) {
866 lm85_write_value(client, LM85_REG_AFAN_HYST1,
867 (data->zone[0].hyst << 4)
868 | data->zone[1].hyst
869 );
870 } else {
871 lm85_write_value(client, LM85_REG_AFAN_HYST2,
872 (data->zone[2].hyst << 4)
873 );
874 }
875 up(&data->update_lock);
876 return count;
877}
878static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
879{
880 struct lm85_data *data = lm85_update_device(dev);
881 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
882}
883static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
884 size_t count, int nr)
885{
886 struct i2c_client *client = to_i2c_client(dev);
887 struct lm85_data *data = i2c_get_clientdata(client);
888 long val = simple_strtol(buf, NULL, 10);
889
890 down(&data->update_lock);
891 data->zone[nr].limit = TEMP_TO_REG(val);
892 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
893 data->zone[nr].limit);
894
895/* Update temp_auto_max and temp_auto_range */
896 data->zone[nr].range = RANGE_TO_REG(
897 TEMP_FROM_REG(data->zone[nr].max_desired) -
898 TEMP_FROM_REG(data->zone[nr].limit));
899 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
900 ((data->zone[nr].range & 0x0f) << 4)
901 | (data->autofan[nr].freq & 0x07));
902
903/* Update temp_auto_hyst and temp_auto_off */
904 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
905 data->zone[nr].limit) - TEMP_FROM_REG(
906 data->zone[nr].off_desired));
907 if ( nr == 0 || nr == 1 ) {
908 lm85_write_value(client, LM85_REG_AFAN_HYST1,
909 (data->zone[0].hyst << 4)
910 | data->zone[1].hyst
911 );
912 } else {
913 lm85_write_value(client, LM85_REG_AFAN_HYST2,
914 (data->zone[2].hyst << 4)
915 );
916 }
917 up(&data->update_lock);
918 return count;
919}
920static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
921{
922 struct lm85_data *data = lm85_update_device(dev);
923 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
924 RANGE_FROM_REG(data->zone[nr].range));
925}
926static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
927 size_t count, int nr)
928{
929 struct i2c_client *client = to_i2c_client(dev);
930 struct lm85_data *data = i2c_get_clientdata(client);
931 int min;
932 long val = simple_strtol(buf, NULL, 10);
933
934 down(&data->update_lock);
935 min = TEMP_FROM_REG(data->zone[nr].limit);
936 data->zone[nr].max_desired = TEMP_TO_REG(val);
937 data->zone[nr].range = RANGE_TO_REG(
938 val - min);
939 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
940 ((data->zone[nr].range & 0x0f) << 4)
941 | (data->autofan[nr].freq & 0x07));
942 up(&data->update_lock);
943 return count;
944}
945static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
946{
947 struct lm85_data *data = lm85_update_device(dev);
948 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
949}
950static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
951 size_t count, int nr)
952{
953 struct i2c_client *client = to_i2c_client(dev);
954 struct lm85_data *data = i2c_get_clientdata(client);
955 long val = simple_strtol(buf, NULL, 10);
956
957 down(&data->update_lock);
958 data->zone[nr].critical = TEMP_TO_REG(val);
959 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
960 data->zone[nr].critical);
961 up(&data->update_lock);
962 return count;
963}
964#define temp_auto(offset) \
965static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, \
966 char *buf) \
967{ \
968 return show_temp_auto_temp_off(dev, buf, offset - 1); \
969} \
970static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, \
971 const char *buf, size_t count) \
972{ \
973 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \
974} \
975static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, \
976 char *buf) \
977{ \
978 return show_temp_auto_temp_min(dev, buf, offset - 1); \
979} \
980static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, \
981 const char *buf, size_t count) \
982{ \
983 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \
984} \
985static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, \
986 char *buf) \
987{ \
988 return show_temp_auto_temp_max(dev, buf, offset - 1); \
989} \
990static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, \
991 const char *buf, size_t count) \
992{ \
993 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \
994} \
995static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, \
996 char *buf) \
997{ \
998 return show_temp_auto_temp_crit(dev, buf, offset - 1); \
999} \
1000static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, \
1001 const char *buf, size_t count) \
1002{ \
1003 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \
1004} \
1005static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \
1006 show_temp##offset##_auto_temp_off, \
1007 set_temp##offset##_auto_temp_off); \
1008static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \
1009 show_temp##offset##_auto_temp_min, \
1010 set_temp##offset##_auto_temp_min); \
1011static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \
1012 show_temp##offset##_auto_temp_max, \
1013 set_temp##offset##_auto_temp_max); \
1014static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \
1015 show_temp##offset##_auto_temp_crit, \
1016 set_temp##offset##_auto_temp_crit);
1017temp_auto(1);
1018temp_auto(2);
1019temp_auto(3);
1020
1021int lm85_attach_adapter(struct i2c_adapter *adapter)
1022{
1023 if (!(adapter->class & I2C_CLASS_HWMON))
1024 return 0;
1025 return i2c_detect(adapter, &addr_data, lm85_detect);
1026}
1027
1028int lm85_detect(struct i2c_adapter *adapter, int address,
1029 int kind)
1030{
1031 int company, verstep ;
1032 struct i2c_client *new_client = NULL;
1033 struct lm85_data *data;
1034 int err = 0;
1035 const char *type_name = "";
1036
1037 if (i2c_is_isa_adapter(adapter)) {
1038 /* This chip has no ISA interface */
1039 goto ERROR0 ;
1040 };
1041
1042 if (!i2c_check_functionality(adapter,
1043 I2C_FUNC_SMBUS_BYTE_DATA)) {
1044 /* We need to be able to do byte I/O */
1045 goto ERROR0 ;
1046 };
1047
1048 /* OK. For now, we presume we have a valid client. We now create the
1049 client structure, even though we cannot fill it completely yet.
1050 But it allows us to access lm85_{read,write}_value. */
1051
1052 if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1053 err = -ENOMEM;
1054 goto ERROR0;
1055 }
1056 memset(data, 0, sizeof(struct lm85_data));
1057
1058 new_client = &data->client;
1059 i2c_set_clientdata(new_client, data);
1060 new_client->addr = address;
1061 new_client->adapter = adapter;
1062 new_client->driver = &lm85_driver;
1063 new_client->flags = 0;
1064
1065 /* Now, we do the remaining detection. */
1066
1067 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1068 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1069
1070 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1071 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1072 i2c_adapter_id(new_client->adapter), new_client->addr,
1073 company, verstep);
1074
1075 /* If auto-detecting, Determine the chip type. */
1076 if (kind <= 0) {
1077 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1078 i2c_adapter_id(adapter), address );
1079 if( company == LM85_COMPANY_NATIONAL
1080 && verstep == LM85_VERSTEP_LM85C ) {
1081 kind = lm85c ;
1082 } else if( company == LM85_COMPANY_NATIONAL
1083 && verstep == LM85_VERSTEP_LM85B ) {
1084 kind = lm85b ;
1085 } else if( company == LM85_COMPANY_NATIONAL
1086 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1087 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1088 " Defaulting to LM85.\n", verstep);
1089 kind = any_chip ;
1090 } else if( company == LM85_COMPANY_ANALOG_DEV
1091 && verstep == LM85_VERSTEP_ADM1027 ) {
1092 kind = adm1027 ;
1093 } else if( company == LM85_COMPANY_ANALOG_DEV
1094 && (verstep == LM85_VERSTEP_ADT7463
1095 || verstep == LM85_VERSTEP_ADT7463C) ) {
1096 kind = adt7463 ;
1097 } else if( company == LM85_COMPANY_ANALOG_DEV
1098 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1099 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1100 " Defaulting to Generic LM85.\n", verstep );
1101 kind = any_chip ;
1102 } else if( company == LM85_COMPANY_SMSC
1103 && (verstep == LM85_VERSTEP_EMC6D100_A0
1104 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1105 /* Unfortunately, we can't tell a '100 from a '101
1106 * from the registers. Since a '101 is a '100
1107 * in a package with fewer pins and therefore no
1108 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1109 * inputs read 0, then it's a '101.
1110 */
1111 kind = emc6d100 ;
1112 } else if( company == LM85_COMPANY_SMSC
1113 && verstep == LM85_VERSTEP_EMC6D102) {
1114 kind = emc6d102 ;
1115 } else if( company == LM85_COMPANY_SMSC
1116 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1117 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1118 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1119 " Defaulting to Generic LM85.\n", verstep );
1120 kind = any_chip ;
1121 } else if( kind == any_chip
1122 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1123 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1124 /* Leave kind as "any_chip" */
1125 } else {
1126 dev_dbg(&adapter->dev, "Autodetection failed\n");
1127 /* Not an LM85 ... */
1128 if( kind == any_chip ) { /* User used force=x,y */
1129 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1130 " found at %d,0x%02x. Try force_lm85c.\n",
1131 i2c_adapter_id(adapter), address );
1132 }
1133 err = 0 ;
1134 goto ERROR1;
1135 }
1136 }
1137
1138 /* Fill in the chip specific driver values */
1139 if ( kind == any_chip ) {
1140 type_name = "lm85";
1141 } else if ( kind == lm85b ) {
1142 type_name = "lm85b";
1143 } else if ( kind == lm85c ) {
1144 type_name = "lm85c";
1145 } else if ( kind == adm1027 ) {
1146 type_name = "adm1027";
1147 } else if ( kind == adt7463 ) {
1148 type_name = "adt7463";
1149 } else if ( kind == emc6d100){
1150 type_name = "emc6d100";
1151 } else if ( kind == emc6d102 ) {
1152 type_name = "emc6d102";
1153 }
1154 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1155
1156 /* Fill in the remaining client fields */
1157 data->type = kind;
1158 data->valid = 0;
1159 init_MUTEX(&data->update_lock);
1160
1161 /* Tell the I2C layer a new client has arrived */
1162 if ((err = i2c_attach_client(new_client)))
1163 goto ERROR1;
1164
1165 /* Set the VRM version */
1166 data->vrm = i2c_which_vrm();
1167
1168 /* Initialize the LM85 chip */
1169 lm85_init_client(new_client);
1170
1171 /* Register sysfs hooks */
1172 device_create_file(&new_client->dev, &dev_attr_fan1_input);
1173 device_create_file(&new_client->dev, &dev_attr_fan2_input);
1174 device_create_file(&new_client->dev, &dev_attr_fan3_input);
1175 device_create_file(&new_client->dev, &dev_attr_fan4_input);
1176 device_create_file(&new_client->dev, &dev_attr_fan1_min);
1177 device_create_file(&new_client->dev, &dev_attr_fan2_min);
1178 device_create_file(&new_client->dev, &dev_attr_fan3_min);
1179 device_create_file(&new_client->dev, &dev_attr_fan4_min);
1180 device_create_file(&new_client->dev, &dev_attr_pwm1);
1181 device_create_file(&new_client->dev, &dev_attr_pwm2);
1182 device_create_file(&new_client->dev, &dev_attr_pwm3);
1183 device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
1184 device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
1185 device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
1186 device_create_file(&new_client->dev, &dev_attr_in0_input);
1187 device_create_file(&new_client->dev, &dev_attr_in1_input);
1188 device_create_file(&new_client->dev, &dev_attr_in2_input);
1189 device_create_file(&new_client->dev, &dev_attr_in3_input);
1190 device_create_file(&new_client->dev, &dev_attr_in4_input);
1191 device_create_file(&new_client->dev, &dev_attr_in0_min);
1192 device_create_file(&new_client->dev, &dev_attr_in1_min);
1193 device_create_file(&new_client->dev, &dev_attr_in2_min);
1194 device_create_file(&new_client->dev, &dev_attr_in3_min);
1195 device_create_file(&new_client->dev, &dev_attr_in4_min);
1196 device_create_file(&new_client->dev, &dev_attr_in0_max);
1197 device_create_file(&new_client->dev, &dev_attr_in1_max);
1198 device_create_file(&new_client->dev, &dev_attr_in2_max);
1199 device_create_file(&new_client->dev, &dev_attr_in3_max);
1200 device_create_file(&new_client->dev, &dev_attr_in4_max);
1201 device_create_file(&new_client->dev, &dev_attr_temp1_input);
1202 device_create_file(&new_client->dev, &dev_attr_temp2_input);
1203 device_create_file(&new_client->dev, &dev_attr_temp3_input);
1204 device_create_file(&new_client->dev, &dev_attr_temp1_min);
1205 device_create_file(&new_client->dev, &dev_attr_temp2_min);
1206 device_create_file(&new_client->dev, &dev_attr_temp3_min);
1207 device_create_file(&new_client->dev, &dev_attr_temp1_max);
1208 device_create_file(&new_client->dev, &dev_attr_temp2_max);
1209 device_create_file(&new_client->dev, &dev_attr_temp3_max);
1210 device_create_file(&new_client->dev, &dev_attr_vrm);
1211 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
1212 device_create_file(&new_client->dev, &dev_attr_alarms);
1213 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels);
1214 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels);
1215 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels);
1216 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min);
1217 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min);
1218 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min);
1219 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl);
1220 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl);
1221 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl);
1222 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq);
1223 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq);
1224 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq);
1225 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off);
1226 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off);
1227 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off);
1228 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min);
1229 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min);
1230 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min);
1231 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max);
1232 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max);
1233 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max);
1234 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit);
1235 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit);
1236 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit);
1237
1238 return 0;
1239
1240 /* Error out and cleanup code */
1241 ERROR1:
1242 kfree(data);
1243 ERROR0:
1244 return err;
1245}
1246
1247int lm85_detach_client(struct i2c_client *client)
1248{
1249 i2c_detach_client(client);
1250 kfree(i2c_get_clientdata(client));
1251 return 0;
1252}
1253
1254
1255int lm85_read_value(struct i2c_client *client, u8 reg)
1256{
1257 int res;
1258
1259 /* What size location is it? */
1260 switch( reg ) {
1261 case LM85_REG_FAN(0) : /* Read WORD data */
1262 case LM85_REG_FAN(1) :
1263 case LM85_REG_FAN(2) :
1264 case LM85_REG_FAN(3) :
1265 case LM85_REG_FAN_MIN(0) :
1266 case LM85_REG_FAN_MIN(1) :
1267 case LM85_REG_FAN_MIN(2) :
1268 case LM85_REG_FAN_MIN(3) :
1269 case LM85_REG_ALARM1 : /* Read both bytes at once */
1270 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1271 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1272 break ;
1273 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1274 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1275 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1276 break ;
1277 default: /* Read BYTE data */
1278 res = i2c_smbus_read_byte_data(client, reg);
1279 break ;
1280 }
1281
1282 return res ;
1283}
1284
1285int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1286{
1287 int res ;
1288
1289 switch( reg ) {
1290 case LM85_REG_FAN(0) : /* Write WORD data */
1291 case LM85_REG_FAN(1) :
1292 case LM85_REG_FAN(2) :
1293 case LM85_REG_FAN(3) :
1294 case LM85_REG_FAN_MIN(0) :
1295 case LM85_REG_FAN_MIN(1) :
1296 case LM85_REG_FAN_MIN(2) :
1297 case LM85_REG_FAN_MIN(3) :
1298 /* NOTE: ALARM is read only, so not included here */
1299 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1300 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1301 break ;
1302 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1303 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1304 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1305 break ;
1306 default: /* Write BYTE data */
1307 res = i2c_smbus_write_byte_data(client, reg, value);
1308 break ;
1309 }
1310
1311 return res ;
1312}
1313
1314void lm85_init_client(struct i2c_client *client)
1315{
1316 int value;
1317 struct lm85_data *data = i2c_get_clientdata(client);
1318
1319 dev_dbg(&client->dev, "Initializing device\n");
1320
1321 /* Warn if part was not "READY" */
1322 value = lm85_read_value(client, LM85_REG_CONFIG);
1323 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1324 if( value & 0x02 ) {
1325 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1326 i2c_adapter_id(client->adapter), client->addr );
1327 };
1328 if( ! (value & 0x04) ) {
1329 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1330 i2c_adapter_id(client->adapter), client->addr );
1331 };
1332 if( value & 0x10
1333 && ( data->type == adm1027
1334 || data->type == adt7463 ) ) {
1335 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1336 "Please report this to the lm85 maintainer.\n",
1337 i2c_adapter_id(client->adapter), client->addr );
1338 };
1339
1340 /* WE INTENTIONALLY make no changes to the limits,
1341 * offsets, pwms, fans and zones. If they were
1342 * configured, we don't want to mess with them.
1343 * If they weren't, the default is 100% PWM, no
1344 * control and will suffice until 'sensors -s'
1345 * can be run by the user.
1346 */
1347
1348 /* Start monitoring */
1349 value = lm85_read_value(client, LM85_REG_CONFIG);
1350 /* Try to clear LOCK, Set START, save everything else */
1351 value = (value & ~ 0x02) | 0x01 ;
1352 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1353 lm85_write_value(client, LM85_REG_CONFIG, value);
1354}
1355
1356static struct lm85_data *lm85_update_device(struct device *dev)
1357{
1358 struct i2c_client *client = to_i2c_client(dev);
1359 struct lm85_data *data = i2c_get_clientdata(client);
1360 int i;
1361
1362 down(&data->update_lock);
1363
1364 if ( !data->valid ||
1365 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1366 /* Things that change quickly */
1367 dev_dbg(&client->dev, "Reading sensor values\n");
1368
1369 /* Have to read extended bits first to "freeze" the
1370 * more significant bits that are read later.
1371 */
1372 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1373 int ext1 = lm85_read_value(client,
1374 ADM1027_REG_EXTEND_ADC1);
1375 int ext2 = lm85_read_value(client,
1376 ADM1027_REG_EXTEND_ADC2);
1377 int val = (ext1 << 8) + ext2;
1378
1379 for(i = 0; i <= 4; i++)
1380 data->in_ext[i] = (val>>(i * 2))&0x03;
1381
1382 for(i = 0; i <= 2; i++)
1383 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03;
1384 }
1385
1386 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1387 the emc6d102 and 2 in the adt7463 and adm1027. In all
1388 other chips ext is always 0 and the value of scale is
1389 irrelevant. So it is left in 4*/
1390 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4;
1391
1392 for (i = 0; i <= 4; ++i) {
1393 data->in[i] =
1394 lm85_read_value(client, LM85_REG_IN(i));
1395 }
1396
1397 for (i = 0; i <= 3; ++i) {
1398 data->fan[i] =
1399 lm85_read_value(client, LM85_REG_FAN(i));
1400 }
1401
1402 for (i = 0; i <= 2; ++i) {
1403 data->temp[i] =
1404 lm85_read_value(client, LM85_REG_TEMP(i));
1405 }
1406
1407 for (i = 0; i <= 2; ++i) {
1408 data->pwm[i] =
1409 lm85_read_value(client, LM85_REG_PWM(i));
1410 }
1411
1412 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1413
1414 if ( data->type == adt7463 ) {
1415 if( data->therm_total < ULONG_MAX - 256 ) {
1416 data->therm_total +=
1417 lm85_read_value(client, ADT7463_REG_THERM );
1418 }
1419 } else if ( data->type == emc6d100 ) {
1420 /* Three more voltage sensors */
1421 for (i = 5; i <= 7; ++i) {
1422 data->in[i] =
1423 lm85_read_value(client, EMC6D100_REG_IN(i));
1424 }
1425 /* More alarm bits */
1426 data->alarms |=
1427 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1428 } else if (data->type == emc6d102 ) {
1429 /* Have to read LSB bits after the MSB ones because
1430 the reading of the MSB bits has frozen the
1431 LSBs (backward from the ADM1027).
1432 */
1433 int ext1 = lm85_read_value(client,
1434 EMC6D102_REG_EXTEND_ADC1);
1435 int ext2 = lm85_read_value(client,
1436 EMC6D102_REG_EXTEND_ADC2);
1437 int ext3 = lm85_read_value(client,
1438 EMC6D102_REG_EXTEND_ADC3);
1439 int ext4 = lm85_read_value(client,
1440 EMC6D102_REG_EXTEND_ADC4);
1441 data->in_ext[0] = ext3 & 0x0f;
1442 data->in_ext[1] = ext4 & 0x0f;
1443 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1444 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1445 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1446
1447 data->temp_ext[0] = ext1 & 0x0f;
1448 data->temp_ext[1] = ext2 & 0x0f;
1449 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1450 }
1451
1452 data->last_reading = jiffies ;
1453 }; /* last_reading */
1454
1455 if ( !data->valid ||
1456 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1457 /* Things that don't change often */
1458 dev_dbg(&client->dev, "Reading config values\n");
1459
1460 for (i = 0; i <= 4; ++i) {
1461 data->in_min[i] =
1462 lm85_read_value(client, LM85_REG_IN_MIN(i));
1463 data->in_max[i] =
1464 lm85_read_value(client, LM85_REG_IN_MAX(i));
1465 }
1466
1467 if ( data->type == emc6d100 ) {
1468 for (i = 5; i <= 7; ++i) {
1469 data->in_min[i] =
1470 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1471 data->in_max[i] =
1472 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1473 }
1474 }
1475
1476 for (i = 0; i <= 3; ++i) {
1477 data->fan_min[i] =
1478 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1479 }
1480
1481 for (i = 0; i <= 2; ++i) {
1482 data->temp_min[i] =
1483 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1484 data->temp_max[i] =
1485 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1486 }
1487
1488 data->vid = lm85_read_value(client, LM85_REG_VID);
1489
1490 for (i = 0; i <= 2; ++i) {
1491 int val ;
1492 data->autofan[i].config =
1493 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1494 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1495 data->autofan[i].freq = val & 0x07 ;
1496 data->zone[i].range = (val >> 4) & 0x0f ;
1497 data->autofan[i].min_pwm =
1498 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1499 data->zone[i].limit =
1500 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1501 data->zone[i].critical =
1502 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1503 }
1504
1505 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1506 data->smooth[0] = i & 0x0f ;
1507 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1508 data->autofan[0].min_off = (i & 0x20) != 0 ;
1509 data->autofan[1].min_off = (i & 0x40) != 0 ;
1510 data->autofan[2].min_off = (i & 0x80) != 0 ;
1511 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1512 data->smooth[1] = (i>>4) & 0x0f ;
1513 data->smooth[2] = i & 0x0f ;
1514
1515 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1516 data->zone[0].hyst = (i>>4) & 0x0f ;
1517 data->zone[1].hyst = i & 0x0f ;
1518
1519 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1520 data->zone[2].hyst = (i>>4) & 0x0f ;
1521
1522 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1523 data->tach_mode = lm85_read_value(client,
1524 LM85_REG_TACH_MODE );
1525 data->spinup_ctl = lm85_read_value(client,
1526 LM85_REG_SPINUP_CTL );
1527 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1528 if ( data->type == adt7463 ) {
1529 for (i = 0; i <= 2; ++i) {
1530 data->oppoint[i] = lm85_read_value(client,
1531 ADT7463_REG_OPPOINT(i) );
1532 }
1533 data->tmin_ctl = lm85_read_value(client,
1534 ADT7463_REG_TMIN_CTL1 );
1535 data->therm_limit = lm85_read_value(client,
1536 ADT7463_REG_THERM_LIMIT );
1537 }
1538 for (i = 0; i <= 2; ++i) {
1539 data->temp_offset[i] = lm85_read_value(client,
1540 ADM1027_REG_TEMP_OFFSET(i) );
1541 }
1542 data->tach_mode = lm85_read_value(client,
1543 ADM1027_REG_CONFIG3 );
1544 data->fan_ppr = lm85_read_value(client,
1545 ADM1027_REG_FAN_PPR );
1546 }
1547
1548 data->last_config = jiffies;
1549 }; /* last_config */
1550
1551 data->valid = 1;
1552
1553 up(&data->update_lock);
1554
1555 return data;
1556}
1557
1558
1559static int __init sm_lm85_init(void)
1560{
1561 return i2c_add_driver(&lm85_driver);
1562}
1563
1564static void __exit sm_lm85_exit(void)
1565{
1566 i2c_del_driver(&lm85_driver);
1567}
1568
1569/* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1570 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1571 * post 2.7.0 CVS changes.
1572 */
1573MODULE_LICENSE("GPL");
1574MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1575MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1576
1577module_init(sm_lm85_init);
1578module_exit(sm_lm85_exit);
Linux 6.x block layer and io_uring tree(s)