2 gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware
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>
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.
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.
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.
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>
36 /* Type of the extra sensor */
37 static unsigned short extra_sensor_type;
38 module_param(extra_sensor_type, ushort, 0);
39 MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
41 /* Addresses to scan */
42 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
44 /* Insmod parameters */
45 I2C_CLIENT_INSMOD_1(gl520sm);
47 /* Many GL520 constants specified below
48 One of the inputs can be configured as either temp or voltage.
49 That's why _TEMP2 and _IN4 access the same register
52 /* The GL520 registers */
53 #define GL520_REG_CHIP_ID 0x00
54 #define GL520_REG_REVISION 0x01
55 #define GL520_REG_CONF 0x03
56 #define GL520_REG_MASK 0x11
58 #define GL520_REG_VID_INPUT 0x02
60 static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
61 static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
62 static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
63 static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
65 static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
66 static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
67 static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
69 #define GL520_REG_FAN_INPUT 0x07
70 #define GL520_REG_FAN_MIN 0x08
71 #define GL520_REG_FAN_DIV 0x0f
72 #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
74 #define GL520_REG_ALARMS 0x12
75 #define GL520_REG_BEEP_MASK 0x10
76 #define GL520_REG_BEEP_ENABLE GL520_REG_CONF
79 * Function declarations
82 static int gl520_probe(struct i2c_client *client,
83 const struct i2c_device_id *id);
84 static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info);
85 static void gl520_init_client(struct i2c_client *client);
86 static int gl520_remove(struct i2c_client *client);
87 static int gl520_read_value(struct i2c_client *client, u8 reg);
88 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
89 static struct gl520_data *gl520_update_device(struct device *dev);
92 static const struct i2c_device_id gl520_id[] = {
93 { "gl520sm", gl520sm },
96 MODULE_DEVICE_TABLE(i2c, gl520_id);
98 static struct i2c_driver gl520_driver = {
99 .class = I2C_CLASS_HWMON,
103 .probe = gl520_probe,
104 .remove = gl520_remove,
105 .id_table = gl520_id,
106 .detect = gl520_detect,
107 .address_data = &addr_data,
112 struct device *hwmon_dev;
113 struct mutex update_lock;
114 char valid; /* zero until the following fields are valid */
115 unsigned long last_updated; /* in jiffies */
119 u8 in_input[5]; /* [0] = VVD */
120 u8 in_min[5]; /* [0] = VDD */
121 u8 in_max[5]; /* [0] = VDD */
140 static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
143 struct gl520_data *data = gl520_update_device(dev);
144 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
146 static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
148 #define VDD_FROM_REG(val) (((val)*95+2)/4)
149 #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
151 #define IN_FROM_REG(val) ((val)*19)
152 #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
154 static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
157 int n = to_sensor_dev_attr(attr)->index;
158 struct gl520_data *data = gl520_update_device(dev);
159 u8 r = data->in_input[n];
162 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
164 return sprintf(buf, "%d\n", IN_FROM_REG(r));
167 static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
170 int n = to_sensor_dev_attr(attr)->index;
171 struct gl520_data *data = gl520_update_device(dev);
172 u8 r = data->in_min[n];
175 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
177 return sprintf(buf, "%d\n", IN_FROM_REG(r));
180 static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
183 int n = to_sensor_dev_attr(attr)->index;
184 struct gl520_data *data = gl520_update_device(dev);
185 u8 r = data->in_max[n];
188 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
190 return sprintf(buf, "%d\n", IN_FROM_REG(r));
193 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
194 const char *buf, size_t count)
196 struct i2c_client *client = to_i2c_client(dev);
197 struct gl520_data *data = i2c_get_clientdata(client);
198 int n = to_sensor_dev_attr(attr)->index;
199 long v = simple_strtol(buf, NULL, 10);
202 mutex_lock(&data->update_lock);
212 gl520_write_value(client, GL520_REG_IN_MIN[n],
213 (gl520_read_value(client, GL520_REG_IN_MIN[n])
216 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
218 mutex_unlock(&data->update_lock);
222 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
223 const char *buf, size_t count)
225 struct i2c_client *client = to_i2c_client(dev);
226 struct gl520_data *data = i2c_get_clientdata(client);
227 int n = to_sensor_dev_attr(attr)->index;
228 long v = simple_strtol(buf, NULL, 10);
236 mutex_lock(&data->update_lock);
241 gl520_write_value(client, GL520_REG_IN_MAX[n],
242 (gl520_read_value(client, GL520_REG_IN_MAX[n])
243 & ~0xff00) | (r << 8));
245 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
247 mutex_unlock(&data->update_lock);
251 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
252 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
253 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
254 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
255 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
256 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
257 get_in_min, set_in_min, 0);
258 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
259 get_in_min, set_in_min, 1);
260 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
261 get_in_min, set_in_min, 2);
262 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
263 get_in_min, set_in_min, 3);
264 static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
265 get_in_min, set_in_min, 4);
266 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
267 get_in_max, set_in_max, 0);
268 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
269 get_in_max, set_in_max, 1);
270 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
271 get_in_max, set_in_max, 2);
272 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
273 get_in_max, set_in_max, 3);
274 static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
275 get_in_max, set_in_max, 4);
277 #define DIV_FROM_REG(val) (1 << (val))
278 #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
279 #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255));
281 static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
284 int n = to_sensor_dev_attr(attr)->index;
285 struct gl520_data *data = gl520_update_device(dev);
287 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n],
291 static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr,
294 int n = to_sensor_dev_attr(attr)->index;
295 struct gl520_data *data = gl520_update_device(dev);
297 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n],
301 static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr,
304 int n = to_sensor_dev_attr(attr)->index;
305 struct gl520_data *data = gl520_update_device(dev);
307 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n]));
310 static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
313 struct gl520_data *data = gl520_update_device(dev);
314 return sprintf(buf, "%d\n", data->fan_off);
317 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
318 const char *buf, size_t count)
320 struct i2c_client *client = to_i2c_client(dev);
321 struct gl520_data *data = i2c_get_clientdata(client);
322 int n = to_sensor_dev_attr(attr)->index;
323 unsigned long v = simple_strtoul(buf, NULL, 10);
326 mutex_lock(&data->update_lock);
327 r = FAN_TO_REG(v, data->fan_div[n]);
328 data->fan_min[n] = r;
331 gl520_write_value(client, GL520_REG_FAN_MIN,
332 (gl520_read_value(client, GL520_REG_FAN_MIN)
333 & ~0xff00) | (r << 8));
335 gl520_write_value(client, GL520_REG_FAN_MIN,
336 (gl520_read_value(client, GL520_REG_FAN_MIN)
339 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
340 if (data->fan_min[n] == 0)
341 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
343 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
344 data->beep_mask &= data->alarm_mask;
345 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
347 mutex_unlock(&data->update_lock);
351 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
352 const char *buf, size_t count)
354 struct i2c_client *client = to_i2c_client(dev);
355 struct gl520_data *data = i2c_get_clientdata(client);
356 int n = to_sensor_dev_attr(attr)->index;
357 unsigned long v = simple_strtoul(buf, NULL, 10);
361 case 1: r = 0; break;
362 case 2: r = 1; break;
363 case 4: r = 2; break;
364 case 8: r = 3; break;
366 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
370 mutex_lock(&data->update_lock);
371 data->fan_div[n] = r;
374 gl520_write_value(client, GL520_REG_FAN_DIV,
375 (gl520_read_value(client, GL520_REG_FAN_DIV)
376 & ~0xc0) | (r << 6));
378 gl520_write_value(client, GL520_REG_FAN_DIV,
379 (gl520_read_value(client, GL520_REG_FAN_DIV)
380 & ~0x30) | (r << 4));
382 mutex_unlock(&data->update_lock);
386 static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
387 const char *buf, size_t count)
389 struct i2c_client *client = to_i2c_client(dev);
390 struct gl520_data *data = i2c_get_clientdata(client);
391 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
393 mutex_lock(&data->update_lock);
395 gl520_write_value(client, GL520_REG_FAN_OFF,
396 (gl520_read_value(client, GL520_REG_FAN_OFF)
397 & ~0x0c) | (r << 2));
398 mutex_unlock(&data->update_lock);
402 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
403 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
404 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
405 get_fan_min, set_fan_min, 0);
406 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
407 get_fan_min, set_fan_min, 1);
408 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
409 get_fan_div, set_fan_div, 0);
410 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
411 get_fan_div, set_fan_div, 1);
412 static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
413 get_fan_off, set_fan_off);
415 #define TEMP_FROM_REG(val) (((val) - 130) * 1000)
416 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
418 static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
421 int n = to_sensor_dev_attr(attr)->index;
422 struct gl520_data *data = gl520_update_device(dev);
424 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
427 static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
430 int n = to_sensor_dev_attr(attr)->index;
431 struct gl520_data *data = gl520_update_device(dev);
433 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
436 static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute
439 int n = to_sensor_dev_attr(attr)->index;
440 struct gl520_data *data = gl520_update_device(dev);
442 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
445 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
446 const char *buf, size_t count)
448 struct i2c_client *client = to_i2c_client(dev);
449 struct gl520_data *data = i2c_get_clientdata(client);
450 int n = to_sensor_dev_attr(attr)->index;
451 long v = simple_strtol(buf, NULL, 10);
453 mutex_lock(&data->update_lock);
454 data->temp_max[n] = TEMP_TO_REG(v);
455 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
456 mutex_unlock(&data->update_lock);
460 static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
461 *attr, const char *buf, size_t count)
463 struct i2c_client *client = to_i2c_client(dev);
464 struct gl520_data *data = i2c_get_clientdata(client);
465 int n = to_sensor_dev_attr(attr)->index;
466 long v = simple_strtol(buf, NULL, 10);
468 mutex_lock(&data->update_lock);
469 data->temp_max_hyst[n] = TEMP_TO_REG(v);
470 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
471 data->temp_max_hyst[n]);
472 mutex_unlock(&data->update_lock);
476 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
477 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
478 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
479 get_temp_max, set_temp_max, 0);
480 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
481 get_temp_max, set_temp_max, 1);
482 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
483 get_temp_max_hyst, set_temp_max_hyst, 0);
484 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
485 get_temp_max_hyst, set_temp_max_hyst, 1);
487 static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
490 struct gl520_data *data = gl520_update_device(dev);
491 return sprintf(buf, "%d\n", data->alarms);
494 static ssize_t get_beep_enable(struct device *dev, struct device_attribute
497 struct gl520_data *data = gl520_update_device(dev);
498 return sprintf(buf, "%d\n", data->beep_enable);
501 static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
504 struct gl520_data *data = gl520_update_device(dev);
505 return sprintf(buf, "%d\n", data->beep_mask);
508 static ssize_t set_beep_enable(struct device *dev, struct device_attribute
509 *attr, const char *buf, size_t count)
511 struct i2c_client *client = to_i2c_client(dev);
512 struct gl520_data *data = i2c_get_clientdata(client);
513 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
515 mutex_lock(&data->update_lock);
516 data->beep_enable = !r;
517 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
518 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
519 & ~0x04) | (r << 2));
520 mutex_unlock(&data->update_lock);
524 static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
525 const char *buf, size_t count)
527 struct i2c_client *client = to_i2c_client(dev);
528 struct gl520_data *data = i2c_get_clientdata(client);
529 u8 r = simple_strtoul(buf, NULL, 10);
531 mutex_lock(&data->update_lock);
532 r &= data->alarm_mask;
534 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
535 mutex_unlock(&data->update_lock);
539 static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
540 static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
541 get_beep_enable, set_beep_enable);
542 static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
543 get_beep_mask, set_beep_mask);
545 static ssize_t get_alarm(struct device *dev, struct device_attribute *attr,
548 int bit_nr = to_sensor_dev_attr(attr)->index;
549 struct gl520_data *data = gl520_update_device(dev);
551 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
554 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
555 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
556 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
557 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
558 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
559 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
560 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
561 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
562 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
564 static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
567 int bitnr = to_sensor_dev_attr(attr)->index;
568 struct gl520_data *data = gl520_update_device(dev);
570 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
573 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
574 const char *buf, size_t count)
576 struct i2c_client *client = to_i2c_client(dev);
577 struct gl520_data *data = i2c_get_clientdata(client);
578 int bitnr = to_sensor_dev_attr(attr)->index;
581 bit = simple_strtoul(buf, NULL, 10);
585 mutex_lock(&data->update_lock);
586 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
588 data->beep_mask |= (1 << bitnr);
590 data->beep_mask &= ~(1 << bitnr);
591 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
592 mutex_unlock(&data->update_lock);
596 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
597 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
598 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
599 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
600 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
601 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
602 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
603 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
604 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
606 static struct attribute *gl520_attributes[] = {
607 &dev_attr_cpu0_vid.attr,
609 &sensor_dev_attr_in0_input.dev_attr.attr,
610 &sensor_dev_attr_in0_min.dev_attr.attr,
611 &sensor_dev_attr_in0_max.dev_attr.attr,
612 &sensor_dev_attr_in0_alarm.dev_attr.attr,
613 &sensor_dev_attr_in0_beep.dev_attr.attr,
614 &sensor_dev_attr_in1_input.dev_attr.attr,
615 &sensor_dev_attr_in1_min.dev_attr.attr,
616 &sensor_dev_attr_in1_max.dev_attr.attr,
617 &sensor_dev_attr_in1_alarm.dev_attr.attr,
618 &sensor_dev_attr_in1_beep.dev_attr.attr,
619 &sensor_dev_attr_in2_input.dev_attr.attr,
620 &sensor_dev_attr_in2_min.dev_attr.attr,
621 &sensor_dev_attr_in2_max.dev_attr.attr,
622 &sensor_dev_attr_in2_alarm.dev_attr.attr,
623 &sensor_dev_attr_in2_beep.dev_attr.attr,
624 &sensor_dev_attr_in3_input.dev_attr.attr,
625 &sensor_dev_attr_in3_min.dev_attr.attr,
626 &sensor_dev_attr_in3_max.dev_attr.attr,
627 &sensor_dev_attr_in3_alarm.dev_attr.attr,
628 &sensor_dev_attr_in3_beep.dev_attr.attr,
630 &sensor_dev_attr_fan1_input.dev_attr.attr,
631 &sensor_dev_attr_fan1_min.dev_attr.attr,
632 &sensor_dev_attr_fan1_div.dev_attr.attr,
633 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
634 &sensor_dev_attr_fan1_beep.dev_attr.attr,
635 &dev_attr_fan1_off.attr,
636 &sensor_dev_attr_fan2_input.dev_attr.attr,
637 &sensor_dev_attr_fan2_min.dev_attr.attr,
638 &sensor_dev_attr_fan2_div.dev_attr.attr,
639 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
640 &sensor_dev_attr_fan2_beep.dev_attr.attr,
642 &sensor_dev_attr_temp1_input.dev_attr.attr,
643 &sensor_dev_attr_temp1_max.dev_attr.attr,
644 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
645 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
646 &sensor_dev_attr_temp1_beep.dev_attr.attr,
648 &dev_attr_alarms.attr,
649 &dev_attr_beep_enable.attr,
650 &dev_attr_beep_mask.attr,
654 static const struct attribute_group gl520_group = {
655 .attrs = gl520_attributes,
658 static struct attribute *gl520_attributes_opt[] = {
659 &sensor_dev_attr_in4_input.dev_attr.attr,
660 &sensor_dev_attr_in4_min.dev_attr.attr,
661 &sensor_dev_attr_in4_max.dev_attr.attr,
662 &sensor_dev_attr_in4_alarm.dev_attr.attr,
663 &sensor_dev_attr_in4_beep.dev_attr.attr,
665 &sensor_dev_attr_temp2_input.dev_attr.attr,
666 &sensor_dev_attr_temp2_max.dev_attr.attr,
667 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
668 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
669 &sensor_dev_attr_temp2_beep.dev_attr.attr,
673 static const struct attribute_group gl520_group_opt = {
674 .attrs = gl520_attributes_opt,
682 /* Return 0 if detection is successful, -ENODEV otherwise */
683 static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
685 struct i2c_adapter *adapter = client->adapter;
687 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
688 I2C_FUNC_SMBUS_WORD_DATA))
691 /* Determine the chip type. */
692 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
693 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
694 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
695 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
699 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
704 static int gl520_probe(struct i2c_client *client,
705 const struct i2c_device_id *id)
707 struct gl520_data *data;
710 data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL);
716 i2c_set_clientdata(client, data);
717 mutex_init(&data->update_lock);
719 /* Initialize the GL520SM chip */
720 gl520_init_client(client);
722 /* Register sysfs hooks */
723 if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group)))
726 if (data->two_temps) {
727 if ((err = device_create_file(&client->dev,
728 &sensor_dev_attr_temp2_input.dev_attr))
729 || (err = device_create_file(&client->dev,
730 &sensor_dev_attr_temp2_max.dev_attr))
731 || (err = device_create_file(&client->dev,
732 &sensor_dev_attr_temp2_max_hyst.dev_attr))
733 || (err = device_create_file(&client->dev,
734 &sensor_dev_attr_temp2_alarm.dev_attr))
735 || (err = device_create_file(&client->dev,
736 &sensor_dev_attr_temp2_beep.dev_attr)))
737 goto exit_remove_files;
739 if ((err = device_create_file(&client->dev,
740 &sensor_dev_attr_in4_input.dev_attr))
741 || (err = device_create_file(&client->dev,
742 &sensor_dev_attr_in4_min.dev_attr))
743 || (err = device_create_file(&client->dev,
744 &sensor_dev_attr_in4_max.dev_attr))
745 || (err = device_create_file(&client->dev,
746 &sensor_dev_attr_in4_alarm.dev_attr))
747 || (err = device_create_file(&client->dev,
748 &sensor_dev_attr_in4_beep.dev_attr)))
749 goto exit_remove_files;
753 data->hwmon_dev = hwmon_device_register(&client->dev);
754 if (IS_ERR(data->hwmon_dev)) {
755 err = PTR_ERR(data->hwmon_dev);
756 goto exit_remove_files;
762 sysfs_remove_group(&client->dev.kobj, &gl520_group);
763 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
771 /* Called when we have found a new GL520SM. */
772 static void gl520_init_client(struct i2c_client *client)
774 struct gl520_data *data = i2c_get_clientdata(client);
777 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
779 data->alarm_mask = 0xff;
780 data->vrm = vid_which_vrm();
782 if (extra_sensor_type == 1)
784 else if (extra_sensor_type == 2)
786 data->two_temps = !(conf & 0x10);
788 /* If IRQ# is disabled, we can safely force comparator mode */
792 /* Enable monitoring if needed */
796 gl520_write_value(client, GL520_REG_CONF, conf);
798 gl520_update_device(&(client->dev));
800 if (data->fan_min[0] == 0)
801 data->alarm_mask &= ~0x20;
802 if (data->fan_min[1] == 0)
803 data->alarm_mask &= ~0x40;
805 data->beep_mask &= data->alarm_mask;
806 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
809 static int gl520_remove(struct i2c_client *client)
811 struct gl520_data *data = i2c_get_clientdata(client);
813 hwmon_device_unregister(data->hwmon_dev);
814 sysfs_remove_group(&client->dev.kobj, &gl520_group);
815 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
822 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized
823 GL520 uses a high-byte first convention */
824 static int gl520_read_value(struct i2c_client *client, u8 reg)
826 if ((reg >= 0x07) && (reg <= 0x0c))
827 return swab16(i2c_smbus_read_word_data(client, reg));
829 return i2c_smbus_read_byte_data(client, reg);
832 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
834 if ((reg >= 0x07) && (reg <= 0x0c))
835 return i2c_smbus_write_word_data(client, reg, swab16(value));
837 return i2c_smbus_write_byte_data(client, reg, value);
841 static struct gl520_data *gl520_update_device(struct device *dev)
843 struct i2c_client *client = to_i2c_client(dev);
844 struct gl520_data *data = i2c_get_clientdata(client);
847 mutex_lock(&data->update_lock);
849 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
851 dev_dbg(&client->dev, "Starting gl520sm update\n");
853 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
854 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
855 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
857 for (i = 0; i < 4; i++) {
858 data->in_input[i] = gl520_read_value(client,
859 GL520_REG_IN_INPUT[i]);
860 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
861 data->in_min[i] = val & 0xff;
862 data->in_max[i] = (val >> 8) & 0xff;
865 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
866 data->fan_input[0] = (val >> 8) & 0xff;
867 data->fan_input[1] = val & 0xff;
869 val = gl520_read_value(client, GL520_REG_FAN_MIN);
870 data->fan_min[0] = (val >> 8) & 0xff;
871 data->fan_min[1] = val & 0xff;
873 data->temp_input[0] = gl520_read_value(client,
874 GL520_REG_TEMP_INPUT[0]);
875 data->temp_max[0] = gl520_read_value(client,
876 GL520_REG_TEMP_MAX[0]);
877 data->temp_max_hyst[0] = gl520_read_value(client,
878 GL520_REG_TEMP_MAX_HYST[0]);
880 val = gl520_read_value(client, GL520_REG_FAN_DIV);
881 data->fan_div[0] = (val >> 6) & 0x03;
882 data->fan_div[1] = (val >> 4) & 0x03;
883 data->fan_off = (val >> 2) & 0x01;
885 data->alarms &= data->alarm_mask;
887 val = gl520_read_value(client, GL520_REG_CONF);
888 data->beep_enable = !((val >> 2) & 1);
890 /* Temp1 and Vin4 are the same input */
891 if (data->two_temps) {
892 data->temp_input[1] = gl520_read_value(client,
893 GL520_REG_TEMP_INPUT[1]);
894 data->temp_max[1] = gl520_read_value(client,
895 GL520_REG_TEMP_MAX[1]);
896 data->temp_max_hyst[1] = gl520_read_value(client,
897 GL520_REG_TEMP_MAX_HYST[1]);
899 data->in_input[4] = gl520_read_value(client,
900 GL520_REG_IN_INPUT[4]);
901 data->in_min[4] = gl520_read_value(client,
902 GL520_REG_IN_MIN[4]);
903 data->in_max[4] = gl520_read_value(client,
904 GL520_REG_IN_MAX[4]);
907 data->last_updated = jiffies;
911 mutex_unlock(&data->update_lock);
917 static int __init sensors_gl520sm_init(void)
919 return i2c_add_driver(&gl520_driver);
922 static void __exit sensors_gl520sm_exit(void)
924 i2c_del_driver(&gl520_driver);
928 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
929 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
930 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
931 MODULE_DESCRIPTION("GL520SM driver");
932 MODULE_LICENSE("GPL");
934 module_init(sensors_gl520sm_init);
935 module_exit(sensors_gl520sm_exit);