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[PATCH] hwmon: hwmon vs i2c, second round (05/11)
[deliverable/linux.git] / drivers / hwmon / 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
1da177e4
LT		 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>
943b0830
MH		 33#include <linux/hwmon.h>
34#include <linux/err.h>
1da177e4
LT		 35
36/* Addresses to scan */
37static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
1da177e4
LT		 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
1da177e4
LT		 285/* Chip sampling rates
286 *
287 * Some sensors are not updated more frequently than once per second
288 * so it doesn't make sense to read them more often than that.
289 * We cache the results and return the saved data if the driver
290 * is called again before a second has elapsed.
291 *
292 * Also, there is significant configuration data for this chip
293 * given the automatic PWM fan control that is possible. There
294 * are about 47 bytes of config data to only 22 bytes of actual
295 * readings. So, we keep the config data up to date in the cache
296 * when it is written and only sample it once every 1 *minute*
297 */
298#define LM85_DATA_INTERVAL (HZ + HZ / 2)
299#define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
300
301/* For each registered LM85, we need to keep some data in memory. That
302 data is pointed to by lm85_list[NR]->data. The structure itself is
303 dynamically allocated, at the same time when a new lm85 client is
304 allocated. */
305
306/* LM85 can automatically adjust fan speeds based on temperature
307 * This structure encapsulates an entire Zone config. There are
308 * three zones (one for each temperature input) on the lm85
309 */
310struct lm85_zone {
311 s8 limit; /* Low temp limit */
312 u8 hyst; /* Low limit hysteresis. (0-15) */
313 u8 range; /* Temp range, encoded */
314 s8 critical; /* "All fans ON" temp limit */
315 u8 off_desired; /* Actual "off" temperature specified. Preserved
316 * to prevent "drift" as other autofan control
317 * values change.
318 */
319 u8 max_desired; /* Actual "max" temperature specified. Preserved
320 * to prevent "drift" as other autofan control
321 * values change.
322 */
323};
324
325struct lm85_autofan {
326 u8 config; /* Register value */
327 u8 freq; /* PWM frequency, encoded */
328 u8 min_pwm; /* Minimum PWM value, encoded */
329 u8 min_off; /* Min PWM or OFF below "limit", flag */
330};
331
332struct lm85_data {
333 struct i2c_client client;
943b0830 334 struct class_device *class_dev;
1da177e4
LT		 335 struct semaphore lock;
336 enum chips type;
337
338 struct semaphore update_lock;
339 int valid; /* !=0 if following fields are valid */
340 unsigned long last_reading; /* In jiffies */
341 unsigned long last_config; /* In jiffies */
342
343 u8 in[8]; /* Register value */
344 u8 in_max[8]; /* Register value */
345 u8 in_min[8]; /* Register value */
346 s8 temp[3]; /* Register value */
347 s8 temp_min[3]; /* Register value */
348 s8 temp_max[3]; /* Register value */
349 s8 temp_offset[3]; /* Register value */
350 u16 fan[4]; /* Register value */
351 u16 fan_min[4]; /* Register value */
352 u8 pwm[3]; /* Register value */
353 u8 spinup_ctl; /* Register encoding, combined */
354 u8 tach_mode; /* Register encoding, combined */
355 u8 temp_ext[3]; /* Decoded values */
356 u8 in_ext[8]; /* Decoded values */
357 u8 adc_scale; /* ADC Extended bits scaling factor */
358 u8 fan_ppr; /* Register value */
359 u8 smooth[3]; /* Register encoding */
360 u8 vid; /* Register value */
361 u8 vrm; /* VRM version */
362 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
363 u8 oppoint[3]; /* Register value */
364 u16 tmin_ctl; /* Register value */
365 unsigned long therm_total; /* Cummulative therm count */
366 u8 therm_limit; /* Register value */
367 u32 alarms; /* Register encoding, combined */
368 struct lm85_autofan autofan[3];
369 struct lm85_zone zone[3];
370};
371
372static int lm85_attach_adapter(struct i2c_adapter *adapter);
373static int lm85_detect(struct i2c_adapter *adapter, int address,
374 int kind);
375static int lm85_detach_client(struct i2c_client *client);
376
377static int lm85_read_value(struct i2c_client *client, u8 register);
378static int lm85_write_value(struct i2c_client *client, u8 register, int value);
379static struct lm85_data *lm85_update_device(struct device *dev);
380static void lm85_init_client(struct i2c_client *client);
381
382
383static struct i2c_driver lm85_driver = {
384 .owner = THIS_MODULE,
385 .name = "lm85",
386 .id = I2C_DRIVERID_LM85,
387 .flags = I2C_DF_NOTIFY,
388 .attach_adapter = lm85_attach_adapter,
389 .detach_client = lm85_detach_client,
390};
391
392
393/* 4 Fans */
394static ssize_t show_fan(struct device *dev, char *buf, int nr)
395{
396 struct lm85_data *data = lm85_update_device(dev);
397 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
398}
399static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
400{
401 struct lm85_data *data = lm85_update_device(dev);
402 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
403}
404static ssize_t set_fan_min(struct device *dev, const char *buf,
405 size_t count, int nr)
406{
407 struct i2c_client *client = to_i2c_client(dev);
408 struct lm85_data *data = i2c_get_clientdata(client);
409 long val = simple_strtol(buf, NULL, 10);
410
411 down(&data->update_lock);
412 data->fan_min[nr] = FAN_TO_REG(val);
413 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
414 up(&data->update_lock);
415 return count;
416}
417
418#define show_fan_offset(offset) \
8627f9ba 419static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 420{ \
421 return show_fan(dev, buf, offset - 1); \
422} \
8627f9ba 423static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 424{ \
425 return show_fan_min(dev, buf, offset - 1); \
426} \
8627f9ba 427static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 428 const char *buf, size_t count) \
429{ \
430 return set_fan_min(dev, buf, count, offset - 1); \
431} \
432static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
433 NULL); \
434static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
435 show_fan_##offset##_min, set_fan_##offset##_min);
436
437show_fan_offset(1);
438show_fan_offset(2);
439show_fan_offset(3);
440show_fan_offset(4);
441
442/* vid, vrm, alarms */
443
8627f9ba 444static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 445{
446 struct lm85_data *data = lm85_update_device(dev);
447 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
448}
449
450static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
451
8627f9ba 452static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 453{
454 struct lm85_data *data = lm85_update_device(dev);
455 return sprintf(buf, "%ld\n", (long) data->vrm);
456}
457
8627f9ba 458static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1da177e4
LT		 459{
460 struct i2c_client *client = to_i2c_client(dev);
461 struct lm85_data *data = i2c_get_clientdata(client);
462 u32 val;
463
464 val = simple_strtoul(buf, NULL, 10);
465 data->vrm = val;
466 return count;
467}
468
469static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
470
8627f9ba 471static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 472{
473 struct lm85_data *data = lm85_update_device(dev);
68188ba7 474 return sprintf(buf, "%u\n", data->alarms);
1da177e4
LT		 475}
476
477static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
478
479/* pwm */
480
481static ssize_t show_pwm(struct device *dev, char *buf, int nr)
482{
483 struct lm85_data *data = lm85_update_device(dev);
484 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
485}
486static ssize_t set_pwm(struct device *dev, const char *buf,
487 size_t count, int nr)
488{
489 struct i2c_client *client = to_i2c_client(dev);
490 struct lm85_data *data = i2c_get_clientdata(client);
491 long val = simple_strtol(buf, NULL, 10);
492
493 down(&data->update_lock);
494 data->pwm[nr] = PWM_TO_REG(val);
495 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
496 up(&data->update_lock);
497 return count;
498}
499static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
500{
501 struct lm85_data *data = lm85_update_device(dev);
502 int pwm_zone;
503
504 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
505 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
506}
507
508#define show_pwm_reg(offset) \
8627f9ba 509static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 510{ \
511 return show_pwm(dev, buf, offset - 1); \
512} \
8627f9ba 513static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 514 const char *buf, size_t count) \
515{ \
516 return set_pwm(dev, buf, count, offset - 1); \
517} \
8627f9ba 518static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 519{ \
520 return show_pwm_enable(dev, buf, offset - 1); \
521} \
522static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
523 show_pwm_##offset, set_pwm_##offset); \
524static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \
525 show_pwm_enable##offset, NULL);
526
527show_pwm_reg(1);
528show_pwm_reg(2);
529show_pwm_reg(3);
530
531/* Voltages */
532
533static ssize_t show_in(struct device *dev, char *buf, int nr)
534{
535 struct lm85_data *data = lm85_update_device(dev);
536 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
537 data->in[nr],
538 data->in_ext[nr],
539 data->adc_scale) );
540}
541static ssize_t show_in_min(struct device *dev, char *buf, int nr)
542{
543 struct lm85_data *data = lm85_update_device(dev);
544 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
545}
546static ssize_t set_in_min(struct device *dev, const char *buf,
547 size_t count, int nr)
548{
549 struct i2c_client *client = to_i2c_client(dev);
550 struct lm85_data *data = i2c_get_clientdata(client);
551 long val = simple_strtol(buf, NULL, 10);
552
553 down(&data->update_lock);
554 data->in_min[nr] = INS_TO_REG(nr, val);
555 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
556 up(&data->update_lock);
557 return count;
558}
559static ssize_t show_in_max(struct device *dev, char *buf, int nr)
560{
561 struct lm85_data *data = lm85_update_device(dev);
562 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
563}
564static ssize_t set_in_max(struct device *dev, const char *buf,
565 size_t count, int nr)
566{
567 struct i2c_client *client = to_i2c_client(dev);
568 struct lm85_data *data = i2c_get_clientdata(client);
569 long val = simple_strtol(buf, NULL, 10);
570
571 down(&data->update_lock);
572 data->in_max[nr] = INS_TO_REG(nr, val);
573 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
574 up(&data->update_lock);
575 return count;
576}
577#define show_in_reg(offset) \
8627f9ba 578static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 579{ \
580 return show_in(dev, buf, offset); \
581} \
8627f9ba 582static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 583{ \
584 return show_in_min(dev, buf, offset); \
585} \
8627f9ba 586static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 587{ \
588 return show_in_max(dev, buf, offset); \
589} \
8627f9ba 590static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 591 const char *buf, size_t count) \
592{ \
593 return set_in_min(dev, buf, count, offset); \
594} \
8627f9ba 595static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 596 const char *buf, size_t count) \
597{ \
598 return set_in_max(dev, buf, count, offset); \
599} \
600static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \
601 NULL); \
602static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
603 show_in_##offset##_min, set_in_##offset##_min); \
604static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
605 show_in_##offset##_max, set_in_##offset##_max);
606
607show_in_reg(0);
608show_in_reg(1);
609show_in_reg(2);
610show_in_reg(3);
611show_in_reg(4);
612
613/* Temps */
614
615static ssize_t show_temp(struct device *dev, char *buf, int nr)
616{
617 struct lm85_data *data = lm85_update_device(dev);
618 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
619 data->temp_ext[nr],
620 data->adc_scale) );
621}
622static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
623{
624 struct lm85_data *data = lm85_update_device(dev);
625 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
626}
627static ssize_t set_temp_min(struct device *dev, const char *buf,
628 size_t count, int nr)
629{
630 struct i2c_client *client = to_i2c_client(dev);
631 struct lm85_data *data = i2c_get_clientdata(client);
632 long val = simple_strtol(buf, NULL, 10);
633
634 down(&data->update_lock);
635 data->temp_min[nr] = TEMP_TO_REG(val);
636 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
637 up(&data->update_lock);
638 return count;
639}
640static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
641{
642 struct lm85_data *data = lm85_update_device(dev);
643 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
644}
645static ssize_t set_temp_max(struct device *dev, const char *buf,
646 size_t count, int nr)
647{
648 struct i2c_client *client = to_i2c_client(dev);
649 struct lm85_data *data = i2c_get_clientdata(client);
650 long val = simple_strtol(buf, NULL, 10);
651
652 down(&data->update_lock);
653 data->temp_max[nr] = TEMP_TO_REG(val);
654 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
655 up(&data->update_lock);
656 return count;
657}
658#define show_temp_reg(offset) \
8627f9ba 659static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 660{ \
661 return show_temp(dev, buf, offset - 1); \
662} \
8627f9ba 663static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 664{ \
665 return show_temp_min(dev, buf, offset - 1); \
666} \
8627f9ba 667static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 668{ \
669 return show_temp_max(dev, buf, offset - 1); \
670} \
8627f9ba 671static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 672 const char *buf, size_t count) \
673{ \
674 return set_temp_min(dev, buf, count, offset - 1); \
675} \
8627f9ba 676static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 677 const char *buf, size_t count) \
678{ \
679 return set_temp_max(dev, buf, count, offset - 1); \
680} \
681static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
682 NULL); \
683static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
684 show_temp_##offset##_min, set_temp_##offset##_min); \
685static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
686 show_temp_##offset##_max, set_temp_##offset##_max);
687
688show_temp_reg(1);
689show_temp_reg(2);
690show_temp_reg(3);
691
692
693/* Automatic PWM control */
694
695static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
696{
697 struct lm85_data *data = lm85_update_device(dev);
698 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
699}
700static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
701 size_t count, int nr)
702{
703 struct i2c_client *client = to_i2c_client(dev);
704 struct lm85_data *data = i2c_get_clientdata(client);
705 long val = simple_strtol(buf, NULL, 10);
706
707 down(&data->update_lock);
708 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
709 | ZONE_TO_REG(val) ;
710 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
711 data->autofan[nr].config);
712 up(&data->update_lock);
713 return count;
714}
715static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
716{
717 struct lm85_data *data = lm85_update_device(dev);
718 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
719}
720static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
721 size_t count, int nr)
722{
723 struct i2c_client *client = to_i2c_client(dev);
724 struct lm85_data *data = i2c_get_clientdata(client);
725 long val = simple_strtol(buf, NULL, 10);
726
727 down(&data->update_lock);
728 data->autofan[nr].min_pwm = PWM_TO_REG(val);
729 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
730 data->autofan[nr].min_pwm);
731 up(&data->update_lock);
732 return count;
733}
734static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
735{
736 struct lm85_data *data = lm85_update_device(dev);
737 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
738}
739static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
740 size_t count, int nr)
741{
742 struct i2c_client *client = to_i2c_client(dev);
743 struct lm85_data *data = i2c_get_clientdata(client);
744 long val = simple_strtol(buf, NULL, 10);
745
746 down(&data->update_lock);
747 data->autofan[nr].min_off = val;
748 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
749 | data->syncpwm3
750 | (data->autofan[0].min_off ? 0x20 : 0)
751 | (data->autofan[1].min_off ? 0x40 : 0)
752 | (data->autofan[2].min_off ? 0x80 : 0)
753 );
754 up(&data->update_lock);
755 return count;
756}
757static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
758{
759 struct lm85_data *data = lm85_update_device(dev);
760 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
761}
762static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
763 size_t count, int nr)
764{
765 struct i2c_client *client = to_i2c_client(dev);
766 struct lm85_data *data = i2c_get_clientdata(client);
767 long val = simple_strtol(buf, NULL, 10);
768
769 down(&data->update_lock);
770 data->autofan[nr].freq = FREQ_TO_REG(val);
771 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
772 (data->zone[nr].range << 4)
773 | data->autofan[nr].freq
774 );
775 up(&data->update_lock);
776 return count;
777}
778#define pwm_auto(offset) \
8627f9ba 779static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 780 char *buf) \
781{ \
782 return show_pwm_auto_channels(dev, buf, offset - 1); \
783} \
8627f9ba 784static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 785 const char *buf, size_t count) \
786{ \
787 return set_pwm_auto_channels(dev, buf, count, offset - 1); \
788} \
8627f9ba 789static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 790 char *buf) \
791{ \
792 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \
793} \
8627f9ba 794static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 795 const char *buf, size_t count) \
796{ \
797 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \
798} \
8627f9ba 799static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 800 char *buf) \
801{ \
802 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \
803} \
8627f9ba 804static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 805 const char *buf, size_t count) \
806{ \
807 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \
808} \
8627f9ba 809static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 810 char *buf) \
811{ \
812 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \
813} \
8627f9ba 814static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 815 const char *buf, size_t count) \
816{ \
817 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \
818} \
819static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \
820 show_pwm##offset##_auto_channels, \
821 set_pwm##offset##_auto_channels); \
822static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \
823 show_pwm##offset##_auto_pwm_min, \
824 set_pwm##offset##_auto_pwm_min); \
825static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \
826 show_pwm##offset##_auto_pwm_minctl, \
827 set_pwm##offset##_auto_pwm_minctl); \
828static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \
829 show_pwm##offset##_auto_pwm_freq, \
830 set_pwm##offset##_auto_pwm_freq);
831pwm_auto(1);
832pwm_auto(2);
833pwm_auto(3);
834
835/* Temperature settings for automatic PWM control */
836
837static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
838{
839 struct lm85_data *data = lm85_update_device(dev);
840 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
841 HYST_FROM_REG(data->zone[nr].hyst));
842}
843static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
844 size_t count, int nr)
845{
846 struct i2c_client *client = to_i2c_client(dev);
847 struct lm85_data *data = i2c_get_clientdata(client);
848 int min;
849 long val = simple_strtol(buf, NULL, 10);
850
851 down(&data->update_lock);
852 min = TEMP_FROM_REG(data->zone[nr].limit);
853 data->zone[nr].off_desired = TEMP_TO_REG(val);
854 data->zone[nr].hyst = HYST_TO_REG(min - val);
855 if ( nr == 0 || nr == 1 ) {
856 lm85_write_value(client, LM85_REG_AFAN_HYST1,
857 (data->zone[0].hyst << 4)
858 | data->zone[1].hyst
859 );
860 } else {
861 lm85_write_value(client, LM85_REG_AFAN_HYST2,
862 (data->zone[2].hyst << 4)
863 );
864 }
865 up(&data->update_lock);
866 return count;
867}
868static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
869{
870 struct lm85_data *data = lm85_update_device(dev);
871 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
872}
873static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
874 size_t count, int nr)
875{
876 struct i2c_client *client = to_i2c_client(dev);
877 struct lm85_data *data = i2c_get_clientdata(client);
878 long val = simple_strtol(buf, NULL, 10);
879
880 down(&data->update_lock);
881 data->zone[nr].limit = TEMP_TO_REG(val);
882 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
883 data->zone[nr].limit);
884
885/* Update temp_auto_max and temp_auto_range */
886 data->zone[nr].range = RANGE_TO_REG(
887 TEMP_FROM_REG(data->zone[nr].max_desired) -
888 TEMP_FROM_REG(data->zone[nr].limit));
889 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
890 ((data->zone[nr].range & 0x0f) << 4)
891 | (data->autofan[nr].freq & 0x07));
892
893/* Update temp_auto_hyst and temp_auto_off */
894 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
895 data->zone[nr].limit) - TEMP_FROM_REG(
896 data->zone[nr].off_desired));
897 if ( nr == 0 || nr == 1 ) {
898 lm85_write_value(client, LM85_REG_AFAN_HYST1,
899 (data->zone[0].hyst << 4)
900 | data->zone[1].hyst
901 );
902 } else {
903 lm85_write_value(client, LM85_REG_AFAN_HYST2,
904 (data->zone[2].hyst << 4)
905 );
906 }
907 up(&data->update_lock);
908 return count;
909}
910static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
911{
912 struct lm85_data *data = lm85_update_device(dev);
913 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
914 RANGE_FROM_REG(data->zone[nr].range));
915}
916static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
917 size_t count, int nr)
918{
919 struct i2c_client *client = to_i2c_client(dev);
920 struct lm85_data *data = i2c_get_clientdata(client);
921 int min;
922 long val = simple_strtol(buf, NULL, 10);
923
924 down(&data->update_lock);
925 min = TEMP_FROM_REG(data->zone[nr].limit);
926 data->zone[nr].max_desired = TEMP_TO_REG(val);
927 data->zone[nr].range = RANGE_TO_REG(
928 val - min);
929 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
930 ((data->zone[nr].range & 0x0f) << 4)
931 | (data->autofan[nr].freq & 0x07));
932 up(&data->update_lock);
933 return count;
934}
935static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
936{
937 struct lm85_data *data = lm85_update_device(dev);
938 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
939}
940static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
941 size_t count, int nr)
942{
943 struct i2c_client *client = to_i2c_client(dev);
944 struct lm85_data *data = i2c_get_clientdata(client);
945 long val = simple_strtol(buf, NULL, 10);
946
947 down(&data->update_lock);
948 data->zone[nr].critical = TEMP_TO_REG(val);
949 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
950 data->zone[nr].critical);
951 up(&data->update_lock);
952 return count;
953}
954#define temp_auto(offset) \
8627f9ba 955static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 956 char *buf) \
957{ \
958 return show_temp_auto_temp_off(dev, buf, offset - 1); \
959} \
8627f9ba 960static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 961 const char *buf, size_t count) \
962{ \
963 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \
964} \
8627f9ba 965static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 966 char *buf) \
967{ \
968 return show_temp_auto_temp_min(dev, buf, offset - 1); \
969} \
8627f9ba 970static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 971 const char *buf, size_t count) \
972{ \
973 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \
974} \
8627f9ba 975static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 976 char *buf) \
977{ \
978 return show_temp_auto_temp_max(dev, buf, offset - 1); \
979} \
8627f9ba 980static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 981 const char *buf, size_t count) \
982{ \
983 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \
984} \
8627f9ba 985static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 986 char *buf) \
987{ \
988 return show_temp_auto_temp_crit(dev, buf, offset - 1); \
989} \
8627f9ba 990static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
1da177e4
LT		 991 const char *buf, size_t count) \
992{ \
993 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \
994} \
995static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \
996 show_temp##offset##_auto_temp_off, \
997 set_temp##offset##_auto_temp_off); \
998static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \
999 show_temp##offset##_auto_temp_min, \
1000 set_temp##offset##_auto_temp_min); \
1001static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \
1002 show_temp##offset##_auto_temp_max, \
1003 set_temp##offset##_auto_temp_max); \
1004static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \
1005 show_temp##offset##_auto_temp_crit, \
1006 set_temp##offset##_auto_temp_crit);
1007temp_auto(1);
1008temp_auto(2);
1009temp_auto(3);
1010
1011int lm85_attach_adapter(struct i2c_adapter *adapter)
1012{
1013 if (!(adapter->class & I2C_CLASS_HWMON))
1014 return 0;
2ed2dc3c 1015 return i2c_probe(adapter, &addr_data, lm85_detect);
1da177e4
LT		 1016}
1017
1018int lm85_detect(struct i2c_adapter *adapter, int address,
1019 int kind)
1020{
1021 int company, verstep ;
1022 struct i2c_client *new_client = NULL;
1023 struct lm85_data *data;
1024 int err = 0;
1025 const char *type_name = "";
1026
1da177e4
LT		 1027 if (!i2c_check_functionality(adapter,
1028 I2C_FUNC_SMBUS_BYTE_DATA)) {
1029 /* We need to be able to do byte I/O */
1030 goto ERROR0 ;
1031 };
1032
1033 /* OK. For now, we presume we have a valid client. We now create the
1034 client structure, even though we cannot fill it completely yet.
1035 But it allows us to access lm85_{read,write}_value. */
1036
1037 if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1038 err = -ENOMEM;
1039 goto ERROR0;
1040 }
1041 memset(data, 0, sizeof(struct lm85_data));
1042
1043 new_client = &data->client;
1044 i2c_set_clientdata(new_client, data);
1045 new_client->addr = address;
1046 new_client->adapter = adapter;
1047 new_client->driver = &lm85_driver;
1048 new_client->flags = 0;
1049
1050 /* Now, we do the remaining detection. */
1051
1052 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1053 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1054
1055 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1056 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1057 i2c_adapter_id(new_client->adapter), new_client->addr,
1058 company, verstep);
1059
1060 /* If auto-detecting, Determine the chip type. */
1061 if (kind <= 0) {
1062 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1063 i2c_adapter_id(adapter), address );
1064 if( company == LM85_COMPANY_NATIONAL
1065 && verstep == LM85_VERSTEP_LM85C ) {
1066 kind = lm85c ;
1067 } else if( company == LM85_COMPANY_NATIONAL
1068 && verstep == LM85_VERSTEP_LM85B ) {
1069 kind = lm85b ;
1070 } else if( company == LM85_COMPANY_NATIONAL
1071 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1072 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1073 " Defaulting to LM85.\n", verstep);
1074 kind = any_chip ;
1075 } else if( company == LM85_COMPANY_ANALOG_DEV
1076 && verstep == LM85_VERSTEP_ADM1027 ) {
1077 kind = adm1027 ;
1078 } else if( company == LM85_COMPANY_ANALOG_DEV
1079 && (verstep == LM85_VERSTEP_ADT7463
1080 || verstep == LM85_VERSTEP_ADT7463C) ) {
1081 kind = adt7463 ;
1082 } else if( company == LM85_COMPANY_ANALOG_DEV
1083 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1084 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1085 " Defaulting to Generic LM85.\n", verstep );
1086 kind = any_chip ;
1087 } else if( company == LM85_COMPANY_SMSC
1088 && (verstep == LM85_VERSTEP_EMC6D100_A0
1089 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1090 /* Unfortunately, we can't tell a '100 from a '101
1091 * from the registers. Since a '101 is a '100
1092 * in a package with fewer pins and therefore no
1093 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1094 * inputs read 0, then it's a '101.
1095 */
1096 kind = emc6d100 ;
1097 } else if( company == LM85_COMPANY_SMSC
1098 && verstep == LM85_VERSTEP_EMC6D102) {
1099 kind = emc6d102 ;
1100 } else if( company == LM85_COMPANY_SMSC
1101 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1102 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1103 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1104 " Defaulting to Generic LM85.\n", verstep );
1105 kind = any_chip ;
1106 } else if( kind == any_chip
1107 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1108 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1109 /* Leave kind as "any_chip" */
1110 } else {
1111 dev_dbg(&adapter->dev, "Autodetection failed\n");
1112 /* Not an LM85 ... */
1113 if( kind == any_chip ) { /* User used force=x,y */
1114 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1115 " found at %d,0x%02x. Try force_lm85c.\n",
1116 i2c_adapter_id(adapter), address );
1117 }
1118 err = 0 ;
1119 goto ERROR1;
1120 }
1121 }
1122
1123 /* Fill in the chip specific driver values */
1124 if ( kind == any_chip ) {
1125 type_name = "lm85";
1126 } else if ( kind == lm85b ) {
1127 type_name = "lm85b";
1128 } else if ( kind == lm85c ) {
1129 type_name = "lm85c";
1130 } else if ( kind == adm1027 ) {
1131 type_name = "adm1027";
1132 } else if ( kind == adt7463 ) {
1133 type_name = "adt7463";
1134 } else if ( kind == emc6d100){
1135 type_name = "emc6d100";
1136 } else if ( kind == emc6d102 ) {
1137 type_name = "emc6d102";
1138 }
1139 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1140
1141 /* Fill in the remaining client fields */
1142 data->type = kind;
1143 data->valid = 0;
1144 init_MUTEX(&data->update_lock);
1145
1146 /* Tell the I2C layer a new client has arrived */
1147 if ((err = i2c_attach_client(new_client)))
1148 goto ERROR1;
1149
1150 /* Set the VRM version */
1151 data->vrm = i2c_which_vrm();
1152
1153 /* Initialize the LM85 chip */
1154 lm85_init_client(new_client);
1155
1156 /* Register sysfs hooks */
943b0830
MH		 1157 data->class_dev = hwmon_device_register(&new_client->dev);
1158 if (IS_ERR(data->class_dev)) {
1159 err = PTR_ERR(data->class_dev);
1160 goto ERROR2;
1161 }
1162
1da177e4
LT		 1163 device_create_file(&new_client->dev, &dev_attr_fan1_input);
1164 device_create_file(&new_client->dev, &dev_attr_fan2_input);
1165 device_create_file(&new_client->dev, &dev_attr_fan3_input);
1166 device_create_file(&new_client->dev, &dev_attr_fan4_input);
1167 device_create_file(&new_client->dev, &dev_attr_fan1_min);
1168 device_create_file(&new_client->dev, &dev_attr_fan2_min);
1169 device_create_file(&new_client->dev, &dev_attr_fan3_min);
1170 device_create_file(&new_client->dev, &dev_attr_fan4_min);
1171 device_create_file(&new_client->dev, &dev_attr_pwm1);
1172 device_create_file(&new_client->dev, &dev_attr_pwm2);
1173 device_create_file(&new_client->dev, &dev_attr_pwm3);
1174 device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
1175 device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
1176 device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
1177 device_create_file(&new_client->dev, &dev_attr_in0_input);
1178 device_create_file(&new_client->dev, &dev_attr_in1_input);
1179 device_create_file(&new_client->dev, &dev_attr_in2_input);
1180 device_create_file(&new_client->dev, &dev_attr_in3_input);
1181 device_create_file(&new_client->dev, &dev_attr_in4_input);
1182 device_create_file(&new_client->dev, &dev_attr_in0_min);
1183 device_create_file(&new_client->dev, &dev_attr_in1_min);
1184 device_create_file(&new_client->dev, &dev_attr_in2_min);
1185 device_create_file(&new_client->dev, &dev_attr_in3_min);
1186 device_create_file(&new_client->dev, &dev_attr_in4_min);
1187 device_create_file(&new_client->dev, &dev_attr_in0_max);
1188 device_create_file(&new_client->dev, &dev_attr_in1_max);
1189 device_create_file(&new_client->dev, &dev_attr_in2_max);
1190 device_create_file(&new_client->dev, &dev_attr_in3_max);
1191 device_create_file(&new_client->dev, &dev_attr_in4_max);
1192 device_create_file(&new_client->dev, &dev_attr_temp1_input);
1193 device_create_file(&new_client->dev, &dev_attr_temp2_input);
1194 device_create_file(&new_client->dev, &dev_attr_temp3_input);
1195 device_create_file(&new_client->dev, &dev_attr_temp1_min);
1196 device_create_file(&new_client->dev, &dev_attr_temp2_min);
1197 device_create_file(&new_client->dev, &dev_attr_temp3_min);
1198 device_create_file(&new_client->dev, &dev_attr_temp1_max);
1199 device_create_file(&new_client->dev, &dev_attr_temp2_max);
1200 device_create_file(&new_client->dev, &dev_attr_temp3_max);
1201 device_create_file(&new_client->dev, &dev_attr_vrm);
1202 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
1203 device_create_file(&new_client->dev, &dev_attr_alarms);
1204 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels);
1205 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels);
1206 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels);
1207 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min);
1208 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min);
1209 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min);
1210 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl);
1211 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl);
1212 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl);
1213 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq);
1214 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq);
1215 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq);
1216 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off);
1217 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off);
1218 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off);
1219 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min);
1220 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min);
1221 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min);
1222 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max);
1223 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max);
1224 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max);
1225 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit);
1226 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit);
1227 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit);
1228
1229 return 0;
1230
1231 /* Error out and cleanup code */
943b0830
MH		 1232 ERROR2:
1233 i2c_detach_client(new_client);
1da177e4
LT		 1234 ERROR1:
1235 kfree(data);
1236 ERROR0:
1237 return err;
1238}
1239
1240int lm85_detach_client(struct i2c_client *client)
1241{
943b0830
MH		 1242 struct lm85_data *data = i2c_get_clientdata(client);
1243 hwmon_device_unregister(data->class_dev);
1da177e4 1244 i2c_detach_client(client);
943b0830 1245 kfree(data);
1da177e4
LT		 1246 return 0;
1247}
1248
1249
1250int lm85_read_value(struct i2c_client *client, u8 reg)
1251{
1252 int res;
1253
1254 /* What size location is it? */
1255 switch( reg ) {
1256 case LM85_REG_FAN(0) : /* Read WORD data */
1257 case LM85_REG_FAN(1) :
1258 case LM85_REG_FAN(2) :
1259 case LM85_REG_FAN(3) :
1260 case LM85_REG_FAN_MIN(0) :
1261 case LM85_REG_FAN_MIN(1) :
1262 case LM85_REG_FAN_MIN(2) :
1263 case LM85_REG_FAN_MIN(3) :
1264 case LM85_REG_ALARM1 : /* Read both bytes at once */
1265 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1266 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1267 break ;
1268 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1269 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1270 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1271 break ;
1272 default: /* Read BYTE data */
1273 res = i2c_smbus_read_byte_data(client, reg);
1274 break ;
1275 }
1276
1277 return res ;
1278}
1279
1280int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1281{
1282 int res ;
1283
1284 switch( reg ) {
1285 case LM85_REG_FAN(0) : /* Write WORD data */
1286 case LM85_REG_FAN(1) :
1287 case LM85_REG_FAN(2) :
1288 case LM85_REG_FAN(3) :
1289 case LM85_REG_FAN_MIN(0) :
1290 case LM85_REG_FAN_MIN(1) :
1291 case LM85_REG_FAN_MIN(2) :
1292 case LM85_REG_FAN_MIN(3) :
1293 /* NOTE: ALARM is read only, so not included here */
1294 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1295 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1296 break ;
1297 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1298 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1299 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1300 break ;
1301 default: /* Write BYTE data */
1302 res = i2c_smbus_write_byte_data(client, reg, value);
1303 break ;
1304 }
1305
1306 return res ;
1307}
1308
1309void lm85_init_client(struct i2c_client *client)
1310{
1311 int value;
1312 struct lm85_data *data = i2c_get_clientdata(client);
1313
1314 dev_dbg(&client->dev, "Initializing device\n");
1315
1316 /* Warn if part was not "READY" */
1317 value = lm85_read_value(client, LM85_REG_CONFIG);
1318 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1319 if( value & 0x02 ) {
1320 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1321 i2c_adapter_id(client->adapter), client->addr );
1322 };
1323 if( ! (value & 0x04) ) {
1324 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1325 i2c_adapter_id(client->adapter), client->addr );
1326 };
1327 if( value & 0x10
1328 && ( data->type == adm1027
1329 || data->type == adt7463 ) ) {
1330 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1331 "Please report this to the lm85 maintainer.\n",
1332 i2c_adapter_id(client->adapter), client->addr );
1333 };
1334
1335 /* WE INTENTIONALLY make no changes to the limits,
1336 * offsets, pwms, fans and zones. If they were
1337 * configured, we don't want to mess with them.
1338 * If they weren't, the default is 100% PWM, no
1339 * control and will suffice until 'sensors -s'
1340 * can be run by the user.
1341 */
1342
1343 /* Start monitoring */
1344 value = lm85_read_value(client, LM85_REG_CONFIG);
1345 /* Try to clear LOCK, Set START, save everything else */
1346 value = (value & ~ 0x02) | 0x01 ;
1347 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1348 lm85_write_value(client, LM85_REG_CONFIG, value);
1349}
1350
1351static struct lm85_data *lm85_update_device(struct device *dev)
1352{
1353 struct i2c_client *client = to_i2c_client(dev);
1354 struct lm85_data *data = i2c_get_clientdata(client);
1355 int i;
1356
1357 down(&data->update_lock);
1358
1359 if ( !data->valid ||
1360 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1361 /* Things that change quickly */
1362 dev_dbg(&client->dev, "Reading sensor values\n");
1363
1364 /* Have to read extended bits first to "freeze" the
1365 * more significant bits that are read later.
1366 */
1367 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1368 int ext1 = lm85_read_value(client,
1369 ADM1027_REG_EXTEND_ADC1);
1370 int ext2 = lm85_read_value(client,
1371 ADM1027_REG_EXTEND_ADC2);
1372 int val = (ext1 << 8) + ext2;
1373
1374 for(i = 0; i <= 4; i++)
1375 data->in_ext[i] = (val>>(i * 2))&0x03;
1376
1377 for(i = 0; i <= 2; i++)
1378 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03;
1379 }
1380
1381 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1382 the emc6d102 and 2 in the adt7463 and adm1027. In all
1383 other chips ext is always 0 and the value of scale is
1384 irrelevant. So it is left in 4*/
1385 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4;
1386
1387 for (i = 0; i <= 4; ++i) {
1388 data->in[i] =
1389 lm85_read_value(client, LM85_REG_IN(i));
1390 }
1391
1392 for (i = 0; i <= 3; ++i) {
1393 data->fan[i] =
1394 lm85_read_value(client, LM85_REG_FAN(i));
1395 }
1396
1397 for (i = 0; i <= 2; ++i) {
1398 data->temp[i] =
1399 lm85_read_value(client, LM85_REG_TEMP(i));
1400 }
1401
1402 for (i = 0; i <= 2; ++i) {
1403 data->pwm[i] =
1404 lm85_read_value(client, LM85_REG_PWM(i));
1405 }
1406
1407 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1408
1409 if ( data->type == adt7463 ) {
1410 if( data->therm_total < ULONG_MAX - 256 ) {
1411 data->therm_total +=
1412 lm85_read_value(client, ADT7463_REG_THERM );
1413 }
1414 } else if ( data->type == emc6d100 ) {
1415 /* Three more voltage sensors */
1416 for (i = 5; i <= 7; ++i) {
1417 data->in[i] =
1418 lm85_read_value(client, EMC6D100_REG_IN(i));
1419 }
1420 /* More alarm bits */
1421 data->alarms |=
1422 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1423 } else if (data->type == emc6d102 ) {
1424 /* Have to read LSB bits after the MSB ones because
1425 the reading of the MSB bits has frozen the
1426 LSBs (backward from the ADM1027).
1427 */
1428 int ext1 = lm85_read_value(client,
1429 EMC6D102_REG_EXTEND_ADC1);
1430 int ext2 = lm85_read_value(client,
1431 EMC6D102_REG_EXTEND_ADC2);
1432 int ext3 = lm85_read_value(client,
1433 EMC6D102_REG_EXTEND_ADC3);
1434 int ext4 = lm85_read_value(client,
1435 EMC6D102_REG_EXTEND_ADC4);
1436 data->in_ext[0] = ext3 & 0x0f;
1437 data->in_ext[1] = ext4 & 0x0f;
1438 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1439 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1440 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1441
1442 data->temp_ext[0] = ext1 & 0x0f;
1443 data->temp_ext[1] = ext2 & 0x0f;
1444 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1445 }
1446
1447 data->last_reading = jiffies ;
1448 }; /* last_reading */
1449
1450 if ( !data->valid ||
1451 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1452 /* Things that don't change often */
1453 dev_dbg(&client->dev, "Reading config values\n");
1454
1455 for (i = 0; i <= 4; ++i) {
1456 data->in_min[i] =
1457 lm85_read_value(client, LM85_REG_IN_MIN(i));
1458 data->in_max[i] =
1459 lm85_read_value(client, LM85_REG_IN_MAX(i));
1460 }
1461
1462 if ( data->type == emc6d100 ) {
1463 for (i = 5; i <= 7; ++i) {
1464 data->in_min[i] =
1465 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1466 data->in_max[i] =
1467 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1468 }
1469 }
1470
1471 for (i = 0; i <= 3; ++i) {
1472 data->fan_min[i] =
1473 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1474 }
1475
1476 for (i = 0; i <= 2; ++i) {
1477 data->temp_min[i] =
1478 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1479 data->temp_max[i] =
1480 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1481 }
1482
1483 data->vid = lm85_read_value(client, LM85_REG_VID);
1484
1485 for (i = 0; i <= 2; ++i) {
1486 int val ;
1487 data->autofan[i].config =
1488 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1489 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1490 data->autofan[i].freq = val & 0x07 ;
1491 data->zone[i].range = (val >> 4) & 0x0f ;
1492 data->autofan[i].min_pwm =
1493 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1494 data->zone[i].limit =
1495 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1496 data->zone[i].critical =
1497 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1498 }
1499
1500 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1501 data->smooth[0] = i & 0x0f ;
1502 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1503 data->autofan[0].min_off = (i & 0x20) != 0 ;
1504 data->autofan[1].min_off = (i & 0x40) != 0 ;
1505 data->autofan[2].min_off = (i & 0x80) != 0 ;
1506 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1507 data->smooth[1] = (i>>4) & 0x0f ;
1508 data->smooth[2] = i & 0x0f ;
1509
1510 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1511 data->zone[0].hyst = (i>>4) & 0x0f ;
1512 data->zone[1].hyst = i & 0x0f ;
1513
1514 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1515 data->zone[2].hyst = (i>>4) & 0x0f ;
1516
1517 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1518 data->tach_mode = lm85_read_value(client,
1519 LM85_REG_TACH_MODE );
1520 data->spinup_ctl = lm85_read_value(client,
1521 LM85_REG_SPINUP_CTL );
1522 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1523 if ( data->type == adt7463 ) {
1524 for (i = 0; i <= 2; ++i) {
1525 data->oppoint[i] = lm85_read_value(client,
1526 ADT7463_REG_OPPOINT(i) );
1527 }
1528 data->tmin_ctl = lm85_read_value(client,
1529 ADT7463_REG_TMIN_CTL1 );
1530 data->therm_limit = lm85_read_value(client,
1531 ADT7463_REG_THERM_LIMIT );
1532 }
1533 for (i = 0; i <= 2; ++i) {
1534 data->temp_offset[i] = lm85_read_value(client,
1535 ADM1027_REG_TEMP_OFFSET(i) );
1536 }
1537 data->tach_mode = lm85_read_value(client,
1538 ADM1027_REG_CONFIG3 );
1539 data->fan_ppr = lm85_read_value(client,
1540 ADM1027_REG_FAN_PPR );
1541 }
1542
1543 data->last_config = jiffies;
1544 }; /* last_config */
1545
1546 data->valid = 1;
1547
1548 up(&data->update_lock);
1549
1550 return data;
1551}
1552
1553
1554static int __init sm_lm85_init(void)
1555{
1556 return i2c_add_driver(&lm85_driver);
1557}
1558
1559static void __exit sm_lm85_exit(void)
1560{
1561 i2c_del_driver(&lm85_driver);
1562}
1563
1564/* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1565 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1566 * post 2.7.0 CVS changes.
1567 */
1568MODULE_LICENSE("GPL");
1569MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1570MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1571
1572module_init(sm_lm85_init);
1573module_exit(sm_lm85_exit);
Linux kernel - Deliverables
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