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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware
4 * monitoring
5 * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>,
6 * Kyösti Mälkki <kmalkki@cc.hut.fi>
7 * Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net>
8 */
9
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/jiffies.h>
14#include <linux/i2c.h>
15#include <linux/hwmon.h>
16#include <linux/hwmon-sysfs.h>
17#include <linux/hwmon-vid.h>
18#include <linux/err.h>
19#include <linux/mutex.h>
20#include <linux/sysfs.h>
21
22/* Type of the extra sensor */
23static unsigned short extra_sensor_type;
24module_param(extra_sensor_type, ushort, 0);
25MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
26
27/* Addresses to scan */
28static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
29
30/*
31 * Many GL520 constants specified below
32 * One of the inputs can be configured as either temp or voltage.
33 * That's why _TEMP2 and _IN4 access the same register
34 */
35
36/* The GL520 registers */
37#define GL520_REG_CHIP_ID 0x00
38#define GL520_REG_REVISION 0x01
39#define GL520_REG_CONF 0x03
40#define GL520_REG_MASK 0x11
41
42#define GL520_REG_VID_INPUT 0x02
43
44static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
45static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
46static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
47static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
48
49static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
50static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
51static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
52
53#define GL520_REG_FAN_INPUT 0x07
54#define GL520_REG_FAN_MIN 0x08
55#define GL520_REG_FAN_DIV 0x0f
56#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
57
58#define GL520_REG_ALARMS 0x12
59#define GL520_REG_BEEP_MASK 0x10
60#define GL520_REG_BEEP_ENABLE GL520_REG_CONF
61
62/* Client data */
63struct gl520_data {
64 struct i2c_client *client;
65 const struct attribute_group *groups[3];
66 struct mutex update_lock;
67 bool valid; /* false until the following fields are valid */
68 unsigned long last_updated; /* in jiffies */
69
70 u8 vid;
71 u8 vrm;
72 u8 in_input[5]; /* [0] = VVD */
73 u8 in_min[5]; /* [0] = VDD */
74 u8 in_max[5]; /* [0] = VDD */
75 u8 fan_input[2];
76 u8 fan_min[2];
77 u8 fan_div[2];
78 u8 fan_off;
79 u8 temp_input[2];
80 u8 temp_max[2];
81 u8 temp_max_hyst[2];
82 u8 alarms;
83 u8 beep_enable;
84 u8 beep_mask;
85 u8 alarm_mask;
86 u8 two_temps;
87};
88
89/*
90 * Registers 0x07 to 0x0c are word-sized, others are byte-sized
91 * GL520 uses a high-byte first convention
92 */
93static int gl520_read_value(struct i2c_client *client, u8 reg)
94{
95 if ((reg >= 0x07) && (reg <= 0x0c))
96 return i2c_smbus_read_word_swapped(client, reg);
97 else
98 return i2c_smbus_read_byte_data(client, reg);
99}
100
101static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
102{
103 if ((reg >= 0x07) && (reg <= 0x0c))
104 return i2c_smbus_write_word_swapped(client, reg, value);
105 else
106 return i2c_smbus_write_byte_data(client, reg, value);
107}
108
109static struct gl520_data *gl520_update_device(struct device *dev)
110{
111 struct gl520_data *data = dev_get_drvdata(dev);
112 struct i2c_client *client = data->client;
113 int val, i;
114
115 mutex_lock(&data->update_lock);
116
117 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
118
119 dev_dbg(&client->dev, "Starting gl520sm update\n");
120
121 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
122 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
123 data->vid = gl520_read_value(client,
124 GL520_REG_VID_INPUT) & 0x1f;
125
126 for (i = 0; i < 4; i++) {
127 data->in_input[i] = gl520_read_value(client,
128 GL520_REG_IN_INPUT[i]);
129 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
130 data->in_min[i] = val & 0xff;
131 data->in_max[i] = (val >> 8) & 0xff;
132 }
133
134 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
135 data->fan_input[0] = (val >> 8) & 0xff;
136 data->fan_input[1] = val & 0xff;
137
138 val = gl520_read_value(client, GL520_REG_FAN_MIN);
139 data->fan_min[0] = (val >> 8) & 0xff;
140 data->fan_min[1] = val & 0xff;
141
142 data->temp_input[0] = gl520_read_value(client,
143 GL520_REG_TEMP_INPUT[0]);
144 data->temp_max[0] = gl520_read_value(client,
145 GL520_REG_TEMP_MAX[0]);
146 data->temp_max_hyst[0] = gl520_read_value(client,
147 GL520_REG_TEMP_MAX_HYST[0]);
148
149 val = gl520_read_value(client, GL520_REG_FAN_DIV);
150 data->fan_div[0] = (val >> 6) & 0x03;
151 data->fan_div[1] = (val >> 4) & 0x03;
152 data->fan_off = (val >> 2) & 0x01;
153
154 data->alarms &= data->alarm_mask;
155
156 val = gl520_read_value(client, GL520_REG_CONF);
157 data->beep_enable = !((val >> 2) & 1);
158
159 /* Temp1 and Vin4 are the same input */
160 if (data->two_temps) {
161 data->temp_input[1] = gl520_read_value(client,
162 GL520_REG_TEMP_INPUT[1]);
163 data->temp_max[1] = gl520_read_value(client,
164 GL520_REG_TEMP_MAX[1]);
165 data->temp_max_hyst[1] = gl520_read_value(client,
166 GL520_REG_TEMP_MAX_HYST[1]);
167 } else {
168 data->in_input[4] = gl520_read_value(client,
169 GL520_REG_IN_INPUT[4]);
170 data->in_min[4] = gl520_read_value(client,
171 GL520_REG_IN_MIN[4]);
172 data->in_max[4] = gl520_read_value(client,
173 GL520_REG_IN_MAX[4]);
174 }
175
176 data->last_updated = jiffies;
177 data->valid = true;
178 }
179
180 mutex_unlock(&data->update_lock);
181
182 return data;
183}
184
185/*
186 * Sysfs stuff
187 */
188
189static ssize_t cpu0_vid_show(struct device *dev,
190 struct device_attribute *attr, char *buf)
191{
192 struct gl520_data *data = gl520_update_device(dev);
193 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
194}
195static DEVICE_ATTR_RO(cpu0_vid);
196
197#define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4)
198#define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4)
199#define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95)
200
201#define IN_FROM_REG(val) ((val) * 19)
202#define IN_CLAMP(val) clamp_val(val, 0, 255 * 19)
203#define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19)
204
205static ssize_t in_input_show(struct device *dev,
206 struct device_attribute *attr, char *buf)
207{
208 int n = to_sensor_dev_attr(attr)->index;
209 struct gl520_data *data = gl520_update_device(dev);
210 u8 r = data->in_input[n];
211
212 if (n == 0)
213 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
214 else
215 return sprintf(buf, "%d\n", IN_FROM_REG(r));
216}
217
218static ssize_t in_min_show(struct device *dev, struct device_attribute *attr,
219 char *buf)
220{
221 int n = to_sensor_dev_attr(attr)->index;
222 struct gl520_data *data = gl520_update_device(dev);
223 u8 r = data->in_min[n];
224
225 if (n == 0)
226 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
227 else
228 return sprintf(buf, "%d\n", IN_FROM_REG(r));
229}
230
231static ssize_t in_max_show(struct device *dev, struct device_attribute *attr,
232 char *buf)
233{
234 int n = to_sensor_dev_attr(attr)->index;
235 struct gl520_data *data = gl520_update_device(dev);
236 u8 r = data->in_max[n];
237
238 if (n == 0)
239 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
240 else
241 return sprintf(buf, "%d\n", IN_FROM_REG(r));
242}
243
244static ssize_t in_min_store(struct device *dev, struct device_attribute *attr,
245 const char *buf, size_t count)
246{
247 struct gl520_data *data = dev_get_drvdata(dev);
248 struct i2c_client *client = data->client;
249 int n = to_sensor_dev_attr(attr)->index;
250 u8 r;
251 long v;
252 int err;
253
254 err = kstrtol(buf, 10, &v);
255 if (err)
256 return err;
257
258 mutex_lock(&data->update_lock);
259
260 if (n == 0)
261 r = VDD_TO_REG(v);
262 else
263 r = IN_TO_REG(v);
264
265 data->in_min[n] = r;
266
267 if (n < 4)
268 gl520_write_value(client, GL520_REG_IN_MIN[n],
269 (gl520_read_value(client, GL520_REG_IN_MIN[n])
270 & ~0xff) | r);
271 else
272 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
273
274 mutex_unlock(&data->update_lock);
275 return count;
276}
277
278static ssize_t in_max_store(struct device *dev, struct device_attribute *attr,
279 const char *buf, size_t count)
280{
281 struct gl520_data *data = dev_get_drvdata(dev);
282 struct i2c_client *client = data->client;
283 int n = to_sensor_dev_attr(attr)->index;
284 u8 r;
285 long v;
286 int err;
287
288 err = kstrtol(buf, 10, &v);
289 if (err)
290 return err;
291
292 if (n == 0)
293 r = VDD_TO_REG(v);
294 else
295 r = IN_TO_REG(v);
296
297 mutex_lock(&data->update_lock);
298
299 data->in_max[n] = r;
300
301 if (n < 4)
302 gl520_write_value(client, GL520_REG_IN_MAX[n],
303 (gl520_read_value(client, GL520_REG_IN_MAX[n])
304 & ~0xff00) | (r << 8));
305 else
306 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
307
308 mutex_unlock(&data->update_lock);
309 return count;
310}
311
312static SENSOR_DEVICE_ATTR_RO(in0_input, in_input, 0);
313static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1);
314static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2);
315static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3);
316static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4);
317static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0);
318static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
319static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
320static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
321static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
322static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0);
323static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
324static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
325static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
326static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
327
328#define DIV_FROM_REG(val) (1 << (val))
329#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div))))
330
331#define FAN_BASE(div) (480000 >> (div))
332#define FAN_CLAMP(val, div) clamp_val(val, FAN_BASE(div) / 255, \
333 FAN_BASE(div))
334#define FAN_TO_REG(val, div) ((val) == 0 ? 0 : \
335 DIV_ROUND_CLOSEST(480000, \
336 FAN_CLAMP(val, div) << (div)))
337
338static ssize_t fan_input_show(struct device *dev,
339 struct device_attribute *attr, char *buf)
340{
341 int n = to_sensor_dev_attr(attr)->index;
342 struct gl520_data *data = gl520_update_device(dev);
343
344 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n],
345 data->fan_div[n]));
346}
347
348static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr,
349 char *buf)
350{
351 int n = to_sensor_dev_attr(attr)->index;
352 struct gl520_data *data = gl520_update_device(dev);
353
354 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n],
355 data->fan_div[n]));
356}
357
358static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr,
359 char *buf)
360{
361 int n = to_sensor_dev_attr(attr)->index;
362 struct gl520_data *data = gl520_update_device(dev);
363
364 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n]));
365}
366
367static ssize_t fan1_off_show(struct device *dev,
368 struct device_attribute *attr, char *buf)
369{
370 struct gl520_data *data = gl520_update_device(dev);
371 return sprintf(buf, "%d\n", data->fan_off);
372}
373
374static ssize_t fan_min_store(struct device *dev,
375 struct device_attribute *attr, const char *buf,
376 size_t count)
377{
378 struct gl520_data *data = dev_get_drvdata(dev);
379 struct i2c_client *client = data->client;
380 int n = to_sensor_dev_attr(attr)->index;
381 u8 r;
382 unsigned long v;
383 int err;
384
385 err = kstrtoul(buf, 10, &v);
386 if (err)
387 return err;
388
389 mutex_lock(&data->update_lock);
390 r = FAN_TO_REG(v, data->fan_div[n]);
391 data->fan_min[n] = r;
392
393 if (n == 0)
394 gl520_write_value(client, GL520_REG_FAN_MIN,
395 (gl520_read_value(client, GL520_REG_FAN_MIN)
396 & ~0xff00) | (r << 8));
397 else
398 gl520_write_value(client, GL520_REG_FAN_MIN,
399 (gl520_read_value(client, GL520_REG_FAN_MIN)
400 & ~0xff) | r);
401
402 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
403 if (data->fan_min[n] == 0)
404 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
405 else
406 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
407 data->beep_mask &= data->alarm_mask;
408 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
409
410 mutex_unlock(&data->update_lock);
411 return count;
412}
413
414static ssize_t fan_div_store(struct device *dev,
415 struct device_attribute *attr, const char *buf,
416 size_t count)
417{
418 struct gl520_data *data = dev_get_drvdata(dev);
419 struct i2c_client *client = data->client;
420 int n = to_sensor_dev_attr(attr)->index;
421 u8 r;
422 unsigned long v;
423 int err;
424
425 err = kstrtoul(buf, 10, &v);
426 if (err)
427 return err;
428
429 switch (v) {
430 case 1:
431 r = 0;
432 break;
433 case 2:
434 r = 1;
435 break;
436 case 4:
437 r = 2;
438 break;
439 case 8:
440 r = 3;
441 break;
442 default:
443 dev_err(&client->dev,
444 "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
445 return -EINVAL;
446 }
447
448 mutex_lock(&data->update_lock);
449 data->fan_div[n] = r;
450
451 if (n == 0)
452 gl520_write_value(client, GL520_REG_FAN_DIV,
453 (gl520_read_value(client, GL520_REG_FAN_DIV)
454 & ~0xc0) | (r << 6));
455 else
456 gl520_write_value(client, GL520_REG_FAN_DIV,
457 (gl520_read_value(client, GL520_REG_FAN_DIV)
458 & ~0x30) | (r << 4));
459
460 mutex_unlock(&data->update_lock);
461 return count;
462}
463
464static ssize_t fan1_off_store(struct device *dev,
465 struct device_attribute *attr, const char *buf,
466 size_t count)
467{
468 struct gl520_data *data = dev_get_drvdata(dev);
469 struct i2c_client *client = data->client;
470 u8 r;
471 unsigned long v;
472 int err;
473
474 err = kstrtoul(buf, 10, &v);
475 if (err)
476 return err;
477
478 r = (v ? 1 : 0);
479
480 mutex_lock(&data->update_lock);
481 data->fan_off = r;
482 gl520_write_value(client, GL520_REG_FAN_OFF,
483 (gl520_read_value(client, GL520_REG_FAN_OFF)
484 & ~0x0c) | (r << 2));
485 mutex_unlock(&data->update_lock);
486 return count;
487}
488
489static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0);
490static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1);
491static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
492static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
493static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
494static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
495static DEVICE_ATTR_RW(fan1_off);
496
497#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
498#define TEMP_CLAMP(val) clamp_val(val, -130000, 125000)
499#define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 130)
500
501static ssize_t temp_input_show(struct device *dev,
502 struct device_attribute *attr, char *buf)
503{
504 int n = to_sensor_dev_attr(attr)->index;
505 struct gl520_data *data = gl520_update_device(dev);
506
507 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
508}
509
510static ssize_t temp_max_show(struct device *dev,
511 struct device_attribute *attr, char *buf)
512{
513 int n = to_sensor_dev_attr(attr)->index;
514 struct gl520_data *data = gl520_update_device(dev);
515
516 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
517}
518
519static ssize_t temp_max_hyst_show(struct device *dev,
520 struct device_attribute *attr, char *buf)
521{
522 int n = to_sensor_dev_attr(attr)->index;
523 struct gl520_data *data = gl520_update_device(dev);
524
525 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
526}
527
528static ssize_t temp_max_store(struct device *dev,
529 struct device_attribute *attr, const char *buf,
530 size_t count)
531{
532 struct gl520_data *data = dev_get_drvdata(dev);
533 struct i2c_client *client = data->client;
534 int n = to_sensor_dev_attr(attr)->index;
535 long v;
536 int err;
537
538 err = kstrtol(buf, 10, &v);
539 if (err)
540 return err;
541
542 mutex_lock(&data->update_lock);
543 data->temp_max[n] = TEMP_TO_REG(v);
544 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
545 mutex_unlock(&data->update_lock);
546 return count;
547}
548
549static ssize_t temp_max_hyst_store(struct device *dev,
550 struct device_attribute *attr,
551 const char *buf, size_t count)
552{
553 struct gl520_data *data = dev_get_drvdata(dev);
554 struct i2c_client *client = data->client;
555 int n = to_sensor_dev_attr(attr)->index;
556 long v;
557 int err;
558
559 err = kstrtol(buf, 10, &v);
560 if (err)
561 return err;
562
563 mutex_lock(&data->update_lock);
564 data->temp_max_hyst[n] = TEMP_TO_REG(v);
565 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
566 data->temp_max_hyst[n]);
567 mutex_unlock(&data->update_lock);
568 return count;
569}
570
571static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0);
572static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1);
573static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
574static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
575static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp_max_hyst, 0);
576static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_max_hyst, 1);
577
578static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
579 char *buf)
580{
581 struct gl520_data *data = gl520_update_device(dev);
582 return sprintf(buf, "%d\n", data->alarms);
583}
584
585static ssize_t beep_enable_show(struct device *dev,
586 struct device_attribute *attr, char *buf)
587{
588 struct gl520_data *data = gl520_update_device(dev);
589 return sprintf(buf, "%d\n", data->beep_enable);
590}
591
592static ssize_t beep_mask_show(struct device *dev,
593 struct device_attribute *attr, char *buf)
594{
595 struct gl520_data *data = gl520_update_device(dev);
596 return sprintf(buf, "%d\n", data->beep_mask);
597}
598
599static ssize_t beep_enable_store(struct device *dev,
600 struct device_attribute *attr,
601 const char *buf, size_t count)
602{
603 struct gl520_data *data = dev_get_drvdata(dev);
604 struct i2c_client *client = data->client;
605 u8 r;
606 unsigned long v;
607 int err;
608
609 err = kstrtoul(buf, 10, &v);
610 if (err)
611 return err;
612
613 r = (v ? 0 : 1);
614
615 mutex_lock(&data->update_lock);
616 data->beep_enable = !r;
617 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
618 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
619 & ~0x04) | (r << 2));
620 mutex_unlock(&data->update_lock);
621 return count;
622}
623
624static ssize_t beep_mask_store(struct device *dev,
625 struct device_attribute *attr, const char *buf,
626 size_t count)
627{
628 struct gl520_data *data = dev_get_drvdata(dev);
629 struct i2c_client *client = data->client;
630 unsigned long r;
631 int err;
632
633 err = kstrtoul(buf, 10, &r);
634 if (err)
635 return err;
636
637 mutex_lock(&data->update_lock);
638 r &= data->alarm_mask;
639 data->beep_mask = r;
640 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
641 mutex_unlock(&data->update_lock);
642 return count;
643}
644
645static DEVICE_ATTR_RO(alarms);
646static DEVICE_ATTR_RW(beep_enable);
647static DEVICE_ATTR_RW(beep_mask);
648
649static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
650 char *buf)
651{
652 int bit_nr = to_sensor_dev_attr(attr)->index;
653 struct gl520_data *data = gl520_update_device(dev);
654
655 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
656}
657
658static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
659static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
660static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
661static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
662static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4);
663static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5);
664static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6);
665static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 7);
666static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 7);
667
668static ssize_t beep_show(struct device *dev, struct device_attribute *attr,
669 char *buf)
670{
671 int bitnr = to_sensor_dev_attr(attr)->index;
672 struct gl520_data *data = gl520_update_device(dev);
673
674 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
675}
676
677static ssize_t beep_store(struct device *dev, struct device_attribute *attr,
678 const char *buf, size_t count)
679{
680 struct gl520_data *data = dev_get_drvdata(dev);
681 struct i2c_client *client = data->client;
682 int bitnr = to_sensor_dev_attr(attr)->index;
683 unsigned long bit;
684
685 int err;
686
687 err = kstrtoul(buf, 10, &bit);
688 if (err)
689 return err;
690 if (bit & ~1)
691 return -EINVAL;
692
693 mutex_lock(&data->update_lock);
694 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
695 if (bit)
696 data->beep_mask |= (1 << bitnr);
697 else
698 data->beep_mask &= ~(1 << bitnr);
699 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
700 mutex_unlock(&data->update_lock);
701 return count;
702}
703
704static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0);
705static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1);
706static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2);
707static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3);
708static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4);
709static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5);
710static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6);
711static SENSOR_DEVICE_ATTR_RW(temp2_beep, beep, 7);
712static SENSOR_DEVICE_ATTR_RW(in4_beep, beep, 7);
713
714static struct attribute *gl520_attributes[] = {
715 &dev_attr_cpu0_vid.attr,
716
717 &sensor_dev_attr_in0_input.dev_attr.attr,
718 &sensor_dev_attr_in0_min.dev_attr.attr,
719 &sensor_dev_attr_in0_max.dev_attr.attr,
720 &sensor_dev_attr_in0_alarm.dev_attr.attr,
721 &sensor_dev_attr_in0_beep.dev_attr.attr,
722 &sensor_dev_attr_in1_input.dev_attr.attr,
723 &sensor_dev_attr_in1_min.dev_attr.attr,
724 &sensor_dev_attr_in1_max.dev_attr.attr,
725 &sensor_dev_attr_in1_alarm.dev_attr.attr,
726 &sensor_dev_attr_in1_beep.dev_attr.attr,
727 &sensor_dev_attr_in2_input.dev_attr.attr,
728 &sensor_dev_attr_in2_min.dev_attr.attr,
729 &sensor_dev_attr_in2_max.dev_attr.attr,
730 &sensor_dev_attr_in2_alarm.dev_attr.attr,
731 &sensor_dev_attr_in2_beep.dev_attr.attr,
732 &sensor_dev_attr_in3_input.dev_attr.attr,
733 &sensor_dev_attr_in3_min.dev_attr.attr,
734 &sensor_dev_attr_in3_max.dev_attr.attr,
735 &sensor_dev_attr_in3_alarm.dev_attr.attr,
736 &sensor_dev_attr_in3_beep.dev_attr.attr,
737
738 &sensor_dev_attr_fan1_input.dev_attr.attr,
739 &sensor_dev_attr_fan1_min.dev_attr.attr,
740 &sensor_dev_attr_fan1_div.dev_attr.attr,
741 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
742 &sensor_dev_attr_fan1_beep.dev_attr.attr,
743 &dev_attr_fan1_off.attr,
744 &sensor_dev_attr_fan2_input.dev_attr.attr,
745 &sensor_dev_attr_fan2_min.dev_attr.attr,
746 &sensor_dev_attr_fan2_div.dev_attr.attr,
747 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
748 &sensor_dev_attr_fan2_beep.dev_attr.attr,
749
750 &sensor_dev_attr_temp1_input.dev_attr.attr,
751 &sensor_dev_attr_temp1_max.dev_attr.attr,
752 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
753 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
754 &sensor_dev_attr_temp1_beep.dev_attr.attr,
755
756 &dev_attr_alarms.attr,
757 &dev_attr_beep_enable.attr,
758 &dev_attr_beep_mask.attr,
759 NULL
760};
761
762static const struct attribute_group gl520_group = {
763 .attrs = gl520_attributes,
764};
765
766static struct attribute *gl520_attributes_in4[] = {
767 &sensor_dev_attr_in4_input.dev_attr.attr,
768 &sensor_dev_attr_in4_min.dev_attr.attr,
769 &sensor_dev_attr_in4_max.dev_attr.attr,
770 &sensor_dev_attr_in4_alarm.dev_attr.attr,
771 &sensor_dev_attr_in4_beep.dev_attr.attr,
772 NULL
773};
774
775static struct attribute *gl520_attributes_temp2[] = {
776 &sensor_dev_attr_temp2_input.dev_attr.attr,
777 &sensor_dev_attr_temp2_max.dev_attr.attr,
778 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
779 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
780 &sensor_dev_attr_temp2_beep.dev_attr.attr,
781 NULL
782};
783
784static const struct attribute_group gl520_group_in4 = {
785 .attrs = gl520_attributes_in4,
786};
787
788static const struct attribute_group gl520_group_temp2 = {
789 .attrs = gl520_attributes_temp2,
790};
791
792
793/*
794 * Real code
795 */
796
797/* Return 0 if detection is successful, -ENODEV otherwise */
798static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
799{
800 struct i2c_adapter *adapter = client->adapter;
801
802 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
803 I2C_FUNC_SMBUS_WORD_DATA))
804 return -ENODEV;
805
806 /* Determine the chip type. */
807 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
808 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
809 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
810 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
811 return -ENODEV;
812 }
813
814 strscpy(info->type, "gl520sm", I2C_NAME_SIZE);
815
816 return 0;
817}
818
819/* Called when we have found a new GL520SM. */
820static void gl520_init_client(struct i2c_client *client)
821{
822 struct gl520_data *data = i2c_get_clientdata(client);
823 u8 oldconf, conf;
824
825 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
826
827 data->alarm_mask = 0xff;
828 data->vrm = vid_which_vrm();
829
830 if (extra_sensor_type == 1)
831 conf &= ~0x10;
832 else if (extra_sensor_type == 2)
833 conf |= 0x10;
834 data->two_temps = !(conf & 0x10);
835
836 /* If IRQ# is disabled, we can safely force comparator mode */
837 if (!(conf & 0x20))
838 conf &= 0xf7;
839
840 /* Enable monitoring if needed */
841 conf |= 0x40;
842
843 if (conf != oldconf)
844 gl520_write_value(client, GL520_REG_CONF, conf);
845
846 gl520_update_device(&(client->dev));
847
848 if (data->fan_min[0] == 0)
849 data->alarm_mask &= ~0x20;
850 if (data->fan_min[1] == 0)
851 data->alarm_mask &= ~0x40;
852
853 data->beep_mask &= data->alarm_mask;
854 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
855}
856
857static int gl520_probe(struct i2c_client *client)
858{
859 struct device *dev = &client->dev;
860 struct device *hwmon_dev;
861 struct gl520_data *data;
862
863 data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL);
864 if (!data)
865 return -ENOMEM;
866
867 i2c_set_clientdata(client, data);
868 mutex_init(&data->update_lock);
869 data->client = client;
870
871 /* Initialize the GL520SM chip */
872 gl520_init_client(client);
873
874 /* sysfs hooks */
875 data->groups[0] = &gl520_group;
876
877 if (data->two_temps)
878 data->groups[1] = &gl520_group_temp2;
879 else
880 data->groups[1] = &gl520_group_in4;
881
882 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
883 data, data->groups);
884 return PTR_ERR_OR_ZERO(hwmon_dev);
885}
886
887static const struct i2c_device_id gl520_id[] = {
888 { "gl520sm", 0 },
889 { }
890};
891MODULE_DEVICE_TABLE(i2c, gl520_id);
892
893static struct i2c_driver gl520_driver = {
894 .class = I2C_CLASS_HWMON,
895 .driver = {
896 .name = "gl520sm",
897 },
898 .probe = gl520_probe,
899 .id_table = gl520_id,
900 .detect = gl520_detect,
901 .address_list = normal_i2c,
902};
903
904module_i2c_driver(gl520_driver);
905
906MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
907 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
908 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
909MODULE_DESCRIPTION("GL520SM driver");
910MODULE_LICENSE("GPL");
1/*
2 gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>,
5 Kyösti Mälkki <kmalkki@cc.hut.fi>
6 Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
22*/
23
24#include <linux/module.h>
25#include <linux/init.h>
26#include <linux/slab.h>
27#include <linux/jiffies.h>
28#include <linux/i2c.h>
29#include <linux/hwmon.h>
30#include <linux/hwmon-sysfs.h>
31#include <linux/hwmon-vid.h>
32#include <linux/err.h>
33#include <linux/mutex.h>
34#include <linux/sysfs.h>
35
36/* Type of the extra sensor */
37static unsigned short extra_sensor_type;
38module_param(extra_sensor_type, ushort, 0);
39MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
40
41/* Addresses to scan */
42static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
43
44/* Many GL520 constants specified below
45One of the inputs can be configured as either temp or voltage.
46That's why _TEMP2 and _IN4 access the same register
47*/
48
49/* The GL520 registers */
50#define GL520_REG_CHIP_ID 0x00
51#define GL520_REG_REVISION 0x01
52#define GL520_REG_CONF 0x03
53#define GL520_REG_MASK 0x11
54
55#define GL520_REG_VID_INPUT 0x02
56
57static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
58static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
59static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
60static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
61
62static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
63static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
64static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
65
66#define GL520_REG_FAN_INPUT 0x07
67#define GL520_REG_FAN_MIN 0x08
68#define GL520_REG_FAN_DIV 0x0f
69#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
70
71#define GL520_REG_ALARMS 0x12
72#define GL520_REG_BEEP_MASK 0x10
73#define GL520_REG_BEEP_ENABLE GL520_REG_CONF
74
75/*
76 * Function declarations
77 */
78
79static int gl520_probe(struct i2c_client *client,
80 const struct i2c_device_id *id);
81static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info);
82static void gl520_init_client(struct i2c_client *client);
83static int gl520_remove(struct i2c_client *client);
84static int gl520_read_value(struct i2c_client *client, u8 reg);
85static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
86static struct gl520_data *gl520_update_device(struct device *dev);
87
88/* Driver data */
89static const struct i2c_device_id gl520_id[] = {
90 { "gl520sm", 0 },
91 { }
92};
93MODULE_DEVICE_TABLE(i2c, gl520_id);
94
95static struct i2c_driver gl520_driver = {
96 .class = I2C_CLASS_HWMON,
97 .driver = {
98 .name = "gl520sm",
99 },
100 .probe = gl520_probe,
101 .remove = gl520_remove,
102 .id_table = gl520_id,
103 .detect = gl520_detect,
104 .address_list = normal_i2c,
105};
106
107/* Client data */
108struct gl520_data {
109 struct device *hwmon_dev;
110 struct mutex update_lock;
111 char valid; /* zero until the following fields are valid */
112 unsigned long last_updated; /* in jiffies */
113
114 u8 vid;
115 u8 vrm;
116 u8 in_input[5]; /* [0] = VVD */
117 u8 in_min[5]; /* [0] = VDD */
118 u8 in_max[5]; /* [0] = VDD */
119 u8 fan_input[2];
120 u8 fan_min[2];
121 u8 fan_div[2];
122 u8 fan_off;
123 u8 temp_input[2];
124 u8 temp_max[2];
125 u8 temp_max_hyst[2];
126 u8 alarms;
127 u8 beep_enable;
128 u8 beep_mask;
129 u8 alarm_mask;
130 u8 two_temps;
131};
132
133/*
134 * Sysfs stuff
135 */
136
137static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
138 char *buf)
139{
140 struct gl520_data *data = gl520_update_device(dev);
141 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
142}
143static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
144
145#define VDD_FROM_REG(val) (((val)*95+2)/4)
146#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
147
148#define IN_FROM_REG(val) ((val)*19)
149#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
150
151static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
152 char *buf)
153{
154 int n = to_sensor_dev_attr(attr)->index;
155 struct gl520_data *data = gl520_update_device(dev);
156 u8 r = data->in_input[n];
157
158 if (n == 0)
159 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
160 else
161 return sprintf(buf, "%d\n", IN_FROM_REG(r));
162}
163
164static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
165 char *buf)
166{
167 int n = to_sensor_dev_attr(attr)->index;
168 struct gl520_data *data = gl520_update_device(dev);
169 u8 r = data->in_min[n];
170
171 if (n == 0)
172 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
173 else
174 return sprintf(buf, "%d\n", IN_FROM_REG(r));
175}
176
177static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
178 char *buf)
179{
180 int n = to_sensor_dev_attr(attr)->index;
181 struct gl520_data *data = gl520_update_device(dev);
182 u8 r = data->in_max[n];
183
184 if (n == 0)
185 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
186 else
187 return sprintf(buf, "%d\n", IN_FROM_REG(r));
188}
189
190static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
191 const char *buf, size_t count)
192{
193 struct i2c_client *client = to_i2c_client(dev);
194 struct gl520_data *data = i2c_get_clientdata(client);
195 int n = to_sensor_dev_attr(attr)->index;
196 long v = simple_strtol(buf, NULL, 10);
197 u8 r;
198
199 mutex_lock(&data->update_lock);
200
201 if (n == 0)
202 r = VDD_TO_REG(v);
203 else
204 r = IN_TO_REG(v);
205
206 data->in_min[n] = r;
207
208 if (n < 4)
209 gl520_write_value(client, GL520_REG_IN_MIN[n],
210 (gl520_read_value(client, GL520_REG_IN_MIN[n])
211 & ~0xff) | r);
212 else
213 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
214
215 mutex_unlock(&data->update_lock);
216 return count;
217}
218
219static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
220 const char *buf, size_t count)
221{
222 struct i2c_client *client = to_i2c_client(dev);
223 struct gl520_data *data = i2c_get_clientdata(client);
224 int n = to_sensor_dev_attr(attr)->index;
225 long v = simple_strtol(buf, NULL, 10);
226 u8 r;
227
228 if (n == 0)
229 r = VDD_TO_REG(v);
230 else
231 r = IN_TO_REG(v);
232
233 mutex_lock(&data->update_lock);
234
235 data->in_max[n] = r;
236
237 if (n < 4)
238 gl520_write_value(client, GL520_REG_IN_MAX[n],
239 (gl520_read_value(client, GL520_REG_IN_MAX[n])
240 & ~0xff00) | (r << 8));
241 else
242 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
243
244 mutex_unlock(&data->update_lock);
245 return count;
246}
247
248static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
249static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
250static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
251static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
252static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
253static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
254 get_in_min, set_in_min, 0);
255static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
256 get_in_min, set_in_min, 1);
257static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
258 get_in_min, set_in_min, 2);
259static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
260 get_in_min, set_in_min, 3);
261static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
262 get_in_min, set_in_min, 4);
263static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
264 get_in_max, set_in_max, 0);
265static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
266 get_in_max, set_in_max, 1);
267static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
268 get_in_max, set_in_max, 2);
269static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
270 get_in_max, set_in_max, 3);
271static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
272 get_in_max, set_in_max, 4);
273
274#define DIV_FROM_REG(val) (1 << (val))
275#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
276#define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255))
277
278static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
279 char *buf)
280{
281 int n = to_sensor_dev_attr(attr)->index;
282 struct gl520_data *data = gl520_update_device(dev);
283
284 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n],
285 data->fan_div[n]));
286}
287
288static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr,
289 char *buf)
290{
291 int n = to_sensor_dev_attr(attr)->index;
292 struct gl520_data *data = gl520_update_device(dev);
293
294 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n],
295 data->fan_div[n]));
296}
297
298static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr,
299 char *buf)
300{
301 int n = to_sensor_dev_attr(attr)->index;
302 struct gl520_data *data = gl520_update_device(dev);
303
304 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n]));
305}
306
307static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
308 char *buf)
309{
310 struct gl520_data *data = gl520_update_device(dev);
311 return sprintf(buf, "%d\n", data->fan_off);
312}
313
314static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
315 const char *buf, size_t count)
316{
317 struct i2c_client *client = to_i2c_client(dev);
318 struct gl520_data *data = i2c_get_clientdata(client);
319 int n = to_sensor_dev_attr(attr)->index;
320 unsigned long v = simple_strtoul(buf, NULL, 10);
321 u8 r;
322
323 mutex_lock(&data->update_lock);
324 r = FAN_TO_REG(v, data->fan_div[n]);
325 data->fan_min[n] = r;
326
327 if (n == 0)
328 gl520_write_value(client, GL520_REG_FAN_MIN,
329 (gl520_read_value(client, GL520_REG_FAN_MIN)
330 & ~0xff00) | (r << 8));
331 else
332 gl520_write_value(client, GL520_REG_FAN_MIN,
333 (gl520_read_value(client, GL520_REG_FAN_MIN)
334 & ~0xff) | r);
335
336 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
337 if (data->fan_min[n] == 0)
338 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
339 else
340 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
341 data->beep_mask &= data->alarm_mask;
342 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
343
344 mutex_unlock(&data->update_lock);
345 return count;
346}
347
348static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
349 const char *buf, size_t count)
350{
351 struct i2c_client *client = to_i2c_client(dev);
352 struct gl520_data *data = i2c_get_clientdata(client);
353 int n = to_sensor_dev_attr(attr)->index;
354 unsigned long v = simple_strtoul(buf, NULL, 10);
355 u8 r;
356
357 switch (v) {
358 case 1: r = 0; break;
359 case 2: r = 1; break;
360 case 4: r = 2; break;
361 case 8: r = 3; break;
362 default:
363 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
364 return -EINVAL;
365 }
366
367 mutex_lock(&data->update_lock);
368 data->fan_div[n] = r;
369
370 if (n == 0)
371 gl520_write_value(client, GL520_REG_FAN_DIV,
372 (gl520_read_value(client, GL520_REG_FAN_DIV)
373 & ~0xc0) | (r << 6));
374 else
375 gl520_write_value(client, GL520_REG_FAN_DIV,
376 (gl520_read_value(client, GL520_REG_FAN_DIV)
377 & ~0x30) | (r << 4));
378
379 mutex_unlock(&data->update_lock);
380 return count;
381}
382
383static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
384 const char *buf, size_t count)
385{
386 struct i2c_client *client = to_i2c_client(dev);
387 struct gl520_data *data = i2c_get_clientdata(client);
388 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
389
390 mutex_lock(&data->update_lock);
391 data->fan_off = r;
392 gl520_write_value(client, GL520_REG_FAN_OFF,
393 (gl520_read_value(client, GL520_REG_FAN_OFF)
394 & ~0x0c) | (r << 2));
395 mutex_unlock(&data->update_lock);
396 return count;
397}
398
399static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
400static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
401static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
402 get_fan_min, set_fan_min, 0);
403static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
404 get_fan_min, set_fan_min, 1);
405static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
406 get_fan_div, set_fan_div, 0);
407static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
408 get_fan_div, set_fan_div, 1);
409static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
410 get_fan_off, set_fan_off);
411
412#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
413#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
414
415static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
416 char *buf)
417{
418 int n = to_sensor_dev_attr(attr)->index;
419 struct gl520_data *data = gl520_update_device(dev);
420
421 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
422}
423
424static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
425 char *buf)
426{
427 int n = to_sensor_dev_attr(attr)->index;
428 struct gl520_data *data = gl520_update_device(dev);
429
430 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
431}
432
433static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute
434 *attr, char *buf)
435{
436 int n = to_sensor_dev_attr(attr)->index;
437 struct gl520_data *data = gl520_update_device(dev);
438
439 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
440}
441
442static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
443 const char *buf, size_t count)
444{
445 struct i2c_client *client = to_i2c_client(dev);
446 struct gl520_data *data = i2c_get_clientdata(client);
447 int n = to_sensor_dev_attr(attr)->index;
448 long v = simple_strtol(buf, NULL, 10);
449
450 mutex_lock(&data->update_lock);
451 data->temp_max[n] = TEMP_TO_REG(v);
452 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
453 mutex_unlock(&data->update_lock);
454 return count;
455}
456
457static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
458 *attr, const char *buf, size_t count)
459{
460 struct i2c_client *client = to_i2c_client(dev);
461 struct gl520_data *data = i2c_get_clientdata(client);
462 int n = to_sensor_dev_attr(attr)->index;
463 long v = simple_strtol(buf, NULL, 10);
464
465 mutex_lock(&data->update_lock);
466 data->temp_max_hyst[n] = TEMP_TO_REG(v);
467 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
468 data->temp_max_hyst[n]);
469 mutex_unlock(&data->update_lock);
470 return count;
471}
472
473static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
474static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
475static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
476 get_temp_max, set_temp_max, 0);
477static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
478 get_temp_max, set_temp_max, 1);
479static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
480 get_temp_max_hyst, set_temp_max_hyst, 0);
481static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
482 get_temp_max_hyst, set_temp_max_hyst, 1);
483
484static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
485 char *buf)
486{
487 struct gl520_data *data = gl520_update_device(dev);
488 return sprintf(buf, "%d\n", data->alarms);
489}
490
491static ssize_t get_beep_enable(struct device *dev, struct device_attribute
492 *attr, char *buf)
493{
494 struct gl520_data *data = gl520_update_device(dev);
495 return sprintf(buf, "%d\n", data->beep_enable);
496}
497
498static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
499 char *buf)
500{
501 struct gl520_data *data = gl520_update_device(dev);
502 return sprintf(buf, "%d\n", data->beep_mask);
503}
504
505static ssize_t set_beep_enable(struct device *dev, struct device_attribute
506 *attr, const char *buf, size_t count)
507{
508 struct i2c_client *client = to_i2c_client(dev);
509 struct gl520_data *data = i2c_get_clientdata(client);
510 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
511
512 mutex_lock(&data->update_lock);
513 data->beep_enable = !r;
514 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
515 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
516 & ~0x04) | (r << 2));
517 mutex_unlock(&data->update_lock);
518 return count;
519}
520
521static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
522 const char *buf, size_t count)
523{
524 struct i2c_client *client = to_i2c_client(dev);
525 struct gl520_data *data = i2c_get_clientdata(client);
526 u8 r = simple_strtoul(buf, NULL, 10);
527
528 mutex_lock(&data->update_lock);
529 r &= data->alarm_mask;
530 data->beep_mask = r;
531 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
532 mutex_unlock(&data->update_lock);
533 return count;
534}
535
536static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
537static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
538 get_beep_enable, set_beep_enable);
539static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
540 get_beep_mask, set_beep_mask);
541
542static ssize_t get_alarm(struct device *dev, struct device_attribute *attr,
543 char *buf)
544{
545 int bit_nr = to_sensor_dev_attr(attr)->index;
546 struct gl520_data *data = gl520_update_device(dev);
547
548 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
549}
550
551static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
552static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
553static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
554static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
555static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
556static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
557static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
558static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
559static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
560
561static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
562 char *buf)
563{
564 int bitnr = to_sensor_dev_attr(attr)->index;
565 struct gl520_data *data = gl520_update_device(dev);
566
567 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
568}
569
570static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
571 const char *buf, size_t count)
572{
573 struct i2c_client *client = to_i2c_client(dev);
574 struct gl520_data *data = i2c_get_clientdata(client);
575 int bitnr = to_sensor_dev_attr(attr)->index;
576 unsigned long bit;
577
578 bit = simple_strtoul(buf, NULL, 10);
579 if (bit & ~1)
580 return -EINVAL;
581
582 mutex_lock(&data->update_lock);
583 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
584 if (bit)
585 data->beep_mask |= (1 << bitnr);
586 else
587 data->beep_mask &= ~(1 << bitnr);
588 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
589 mutex_unlock(&data->update_lock);
590 return count;
591}
592
593static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
594static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
595static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
596static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
597static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
598static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
599static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
600static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
601static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
602
603static struct attribute *gl520_attributes[] = {
604 &dev_attr_cpu0_vid.attr,
605
606 &sensor_dev_attr_in0_input.dev_attr.attr,
607 &sensor_dev_attr_in0_min.dev_attr.attr,
608 &sensor_dev_attr_in0_max.dev_attr.attr,
609 &sensor_dev_attr_in0_alarm.dev_attr.attr,
610 &sensor_dev_attr_in0_beep.dev_attr.attr,
611 &sensor_dev_attr_in1_input.dev_attr.attr,
612 &sensor_dev_attr_in1_min.dev_attr.attr,
613 &sensor_dev_attr_in1_max.dev_attr.attr,
614 &sensor_dev_attr_in1_alarm.dev_attr.attr,
615 &sensor_dev_attr_in1_beep.dev_attr.attr,
616 &sensor_dev_attr_in2_input.dev_attr.attr,
617 &sensor_dev_attr_in2_min.dev_attr.attr,
618 &sensor_dev_attr_in2_max.dev_attr.attr,
619 &sensor_dev_attr_in2_alarm.dev_attr.attr,
620 &sensor_dev_attr_in2_beep.dev_attr.attr,
621 &sensor_dev_attr_in3_input.dev_attr.attr,
622 &sensor_dev_attr_in3_min.dev_attr.attr,
623 &sensor_dev_attr_in3_max.dev_attr.attr,
624 &sensor_dev_attr_in3_alarm.dev_attr.attr,
625 &sensor_dev_attr_in3_beep.dev_attr.attr,
626
627 &sensor_dev_attr_fan1_input.dev_attr.attr,
628 &sensor_dev_attr_fan1_min.dev_attr.attr,
629 &sensor_dev_attr_fan1_div.dev_attr.attr,
630 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
631 &sensor_dev_attr_fan1_beep.dev_attr.attr,
632 &dev_attr_fan1_off.attr,
633 &sensor_dev_attr_fan2_input.dev_attr.attr,
634 &sensor_dev_attr_fan2_min.dev_attr.attr,
635 &sensor_dev_attr_fan2_div.dev_attr.attr,
636 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
637 &sensor_dev_attr_fan2_beep.dev_attr.attr,
638
639 &sensor_dev_attr_temp1_input.dev_attr.attr,
640 &sensor_dev_attr_temp1_max.dev_attr.attr,
641 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
642 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
643 &sensor_dev_attr_temp1_beep.dev_attr.attr,
644
645 &dev_attr_alarms.attr,
646 &dev_attr_beep_enable.attr,
647 &dev_attr_beep_mask.attr,
648 NULL
649};
650
651static const struct attribute_group gl520_group = {
652 .attrs = gl520_attributes,
653};
654
655static struct attribute *gl520_attributes_opt[] = {
656 &sensor_dev_attr_in4_input.dev_attr.attr,
657 &sensor_dev_attr_in4_min.dev_attr.attr,
658 &sensor_dev_attr_in4_max.dev_attr.attr,
659 &sensor_dev_attr_in4_alarm.dev_attr.attr,
660 &sensor_dev_attr_in4_beep.dev_attr.attr,
661
662 &sensor_dev_attr_temp2_input.dev_attr.attr,
663 &sensor_dev_attr_temp2_max.dev_attr.attr,
664 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
665 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
666 &sensor_dev_attr_temp2_beep.dev_attr.attr,
667 NULL
668};
669
670static const struct attribute_group gl520_group_opt = {
671 .attrs = gl520_attributes_opt,
672};
673
674
675/*
676 * Real code
677 */
678
679/* Return 0 if detection is successful, -ENODEV otherwise */
680static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
681{
682 struct i2c_adapter *adapter = client->adapter;
683
684 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
685 I2C_FUNC_SMBUS_WORD_DATA))
686 return -ENODEV;
687
688 /* Determine the chip type. */
689 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
690 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
691 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
692 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
693 return -ENODEV;
694 }
695
696 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
697
698 return 0;
699}
700
701static int gl520_probe(struct i2c_client *client,
702 const struct i2c_device_id *id)
703{
704 struct gl520_data *data;
705 int err;
706
707 data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL);
708 if (!data) {
709 err = -ENOMEM;
710 goto exit;
711 }
712
713 i2c_set_clientdata(client, data);
714 mutex_init(&data->update_lock);
715
716 /* Initialize the GL520SM chip */
717 gl520_init_client(client);
718
719 /* Register sysfs hooks */
720 if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group)))
721 goto exit_free;
722
723 if (data->two_temps) {
724 if ((err = device_create_file(&client->dev,
725 &sensor_dev_attr_temp2_input.dev_attr))
726 || (err = device_create_file(&client->dev,
727 &sensor_dev_attr_temp2_max.dev_attr))
728 || (err = device_create_file(&client->dev,
729 &sensor_dev_attr_temp2_max_hyst.dev_attr))
730 || (err = device_create_file(&client->dev,
731 &sensor_dev_attr_temp2_alarm.dev_attr))
732 || (err = device_create_file(&client->dev,
733 &sensor_dev_attr_temp2_beep.dev_attr)))
734 goto exit_remove_files;
735 } else {
736 if ((err = device_create_file(&client->dev,
737 &sensor_dev_attr_in4_input.dev_attr))
738 || (err = device_create_file(&client->dev,
739 &sensor_dev_attr_in4_min.dev_attr))
740 || (err = device_create_file(&client->dev,
741 &sensor_dev_attr_in4_max.dev_attr))
742 || (err = device_create_file(&client->dev,
743 &sensor_dev_attr_in4_alarm.dev_attr))
744 || (err = device_create_file(&client->dev,
745 &sensor_dev_attr_in4_beep.dev_attr)))
746 goto exit_remove_files;
747 }
748
749
750 data->hwmon_dev = hwmon_device_register(&client->dev);
751 if (IS_ERR(data->hwmon_dev)) {
752 err = PTR_ERR(data->hwmon_dev);
753 goto exit_remove_files;
754 }
755
756 return 0;
757
758exit_remove_files:
759 sysfs_remove_group(&client->dev.kobj, &gl520_group);
760 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
761exit_free:
762 kfree(data);
763exit:
764 return err;
765}
766
767
768/* Called when we have found a new GL520SM. */
769static void gl520_init_client(struct i2c_client *client)
770{
771 struct gl520_data *data = i2c_get_clientdata(client);
772 u8 oldconf, conf;
773
774 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
775
776 data->alarm_mask = 0xff;
777 data->vrm = vid_which_vrm();
778
779 if (extra_sensor_type == 1)
780 conf &= ~0x10;
781 else if (extra_sensor_type == 2)
782 conf |= 0x10;
783 data->two_temps = !(conf & 0x10);
784
785 /* If IRQ# is disabled, we can safely force comparator mode */
786 if (!(conf & 0x20))
787 conf &= 0xf7;
788
789 /* Enable monitoring if needed */
790 conf |= 0x40;
791
792 if (conf != oldconf)
793 gl520_write_value(client, GL520_REG_CONF, conf);
794
795 gl520_update_device(&(client->dev));
796
797 if (data->fan_min[0] == 0)
798 data->alarm_mask &= ~0x20;
799 if (data->fan_min[1] == 0)
800 data->alarm_mask &= ~0x40;
801
802 data->beep_mask &= data->alarm_mask;
803 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
804}
805
806static int gl520_remove(struct i2c_client *client)
807{
808 struct gl520_data *data = i2c_get_clientdata(client);
809
810 hwmon_device_unregister(data->hwmon_dev);
811 sysfs_remove_group(&client->dev.kobj, &gl520_group);
812 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
813
814 kfree(data);
815 return 0;
816}
817
818
819/* Registers 0x07 to 0x0c are word-sized, others are byte-sized
820 GL520 uses a high-byte first convention */
821static int gl520_read_value(struct i2c_client *client, u8 reg)
822{
823 if ((reg >= 0x07) && (reg <= 0x0c))
824 return swab16(i2c_smbus_read_word_data(client, reg));
825 else
826 return i2c_smbus_read_byte_data(client, reg);
827}
828
829static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
830{
831 if ((reg >= 0x07) && (reg <= 0x0c))
832 return i2c_smbus_write_word_data(client, reg, swab16(value));
833 else
834 return i2c_smbus_write_byte_data(client, reg, value);
835}
836
837
838static struct gl520_data *gl520_update_device(struct device *dev)
839{
840 struct i2c_client *client = to_i2c_client(dev);
841 struct gl520_data *data = i2c_get_clientdata(client);
842 int val, i;
843
844 mutex_lock(&data->update_lock);
845
846 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
847
848 dev_dbg(&client->dev, "Starting gl520sm update\n");
849
850 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
851 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
852 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
853
854 for (i = 0; i < 4; i++) {
855 data->in_input[i] = gl520_read_value(client,
856 GL520_REG_IN_INPUT[i]);
857 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
858 data->in_min[i] = val & 0xff;
859 data->in_max[i] = (val >> 8) & 0xff;
860 }
861
862 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
863 data->fan_input[0] = (val >> 8) & 0xff;
864 data->fan_input[1] = val & 0xff;
865
866 val = gl520_read_value(client, GL520_REG_FAN_MIN);
867 data->fan_min[0] = (val >> 8) & 0xff;
868 data->fan_min[1] = val & 0xff;
869
870 data->temp_input[0] = gl520_read_value(client,
871 GL520_REG_TEMP_INPUT[0]);
872 data->temp_max[0] = gl520_read_value(client,
873 GL520_REG_TEMP_MAX[0]);
874 data->temp_max_hyst[0] = gl520_read_value(client,
875 GL520_REG_TEMP_MAX_HYST[0]);
876
877 val = gl520_read_value(client, GL520_REG_FAN_DIV);
878 data->fan_div[0] = (val >> 6) & 0x03;
879 data->fan_div[1] = (val >> 4) & 0x03;
880 data->fan_off = (val >> 2) & 0x01;
881
882 data->alarms &= data->alarm_mask;
883
884 val = gl520_read_value(client, GL520_REG_CONF);
885 data->beep_enable = !((val >> 2) & 1);
886
887 /* Temp1 and Vin4 are the same input */
888 if (data->two_temps) {
889 data->temp_input[1] = gl520_read_value(client,
890 GL520_REG_TEMP_INPUT[1]);
891 data->temp_max[1] = gl520_read_value(client,
892 GL520_REG_TEMP_MAX[1]);
893 data->temp_max_hyst[1] = gl520_read_value(client,
894 GL520_REG_TEMP_MAX_HYST[1]);
895 } else {
896 data->in_input[4] = gl520_read_value(client,
897 GL520_REG_IN_INPUT[4]);
898 data->in_min[4] = gl520_read_value(client,
899 GL520_REG_IN_MIN[4]);
900 data->in_max[4] = gl520_read_value(client,
901 GL520_REG_IN_MAX[4]);
902 }
903
904 data->last_updated = jiffies;
905 data->valid = 1;
906 }
907
908 mutex_unlock(&data->update_lock);
909
910 return data;
911}
912
913
914static int __init sensors_gl520sm_init(void)
915{
916 return i2c_add_driver(&gl520_driver);
917}
918
919static void __exit sensors_gl520sm_exit(void)
920{
921 i2c_del_driver(&gl520_driver);
922}
923
924
925MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
926 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
927 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
928MODULE_DESCRIPTION("GL520SM driver");
929MODULE_LICENSE("GPL");
930
931module_init(sensors_gl520sm_init);
932module_exit(sensors_gl520sm_exit);