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-vid.h>
31 #include <linux/err.h>
32 #include <linux/mutex.h>
33 #include <linux/sysfs.h>
35 /* Type of the extra sensor */
36 static unsigned short extra_sensor_type;
37 module_param(extra_sensor_type, ushort, 0);
38 MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
40 /* Addresses to scan */
41 static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
43 /* Insmod parameters */
44 I2C_CLIENT_INSMOD_1(gl520sm);
46 /* Many GL520 constants specified below
47 One of the inputs can be configured as either temp or voltage.
48 That's why _TEMP2 and _IN4 access the same register
51 /* The GL520 registers */
52 #define GL520_REG_CHIP_ID 0x00
53 #define GL520_REG_REVISION 0x01
54 #define GL520_REG_CONF 0x03
55 #define GL520_REG_MASK 0x11
57 #define GL520_REG_VID_INPUT 0x02
59 #define GL520_REG_IN0_INPUT 0x15
60 #define GL520_REG_IN0_LIMIT 0x0c
61 #define GL520_REG_IN0_MIN GL520_REG_IN0_LIMIT
62 #define GL520_REG_IN0_MAX GL520_REG_IN0_LIMIT
64 #define GL520_REG_IN1_INPUT 0x14
65 #define GL520_REG_IN1_LIMIT 0x09
66 #define GL520_REG_IN1_MIN GL520_REG_IN1_LIMIT
67 #define GL520_REG_IN1_MAX GL520_REG_IN1_LIMIT
69 #define GL520_REG_IN2_INPUT 0x13
70 #define GL520_REG_IN2_LIMIT 0x0a
71 #define GL520_REG_IN2_MIN GL520_REG_IN2_LIMIT
72 #define GL520_REG_IN2_MAX GL520_REG_IN2_LIMIT
74 #define GL520_REG_IN3_INPUT 0x0d
75 #define GL520_REG_IN3_LIMIT 0x0b
76 #define GL520_REG_IN3_MIN GL520_REG_IN3_LIMIT
77 #define GL520_REG_IN3_MAX GL520_REG_IN3_LIMIT
79 #define GL520_REG_IN4_INPUT 0x0e
80 #define GL520_REG_IN4_MAX 0x17
81 #define GL520_REG_IN4_MIN 0x18
83 #define GL520_REG_TEMP1_INPUT 0x04
84 #define GL520_REG_TEMP1_MAX 0x05
85 #define GL520_REG_TEMP1_MAX_HYST 0x06
87 #define GL520_REG_TEMP2_INPUT 0x0e
88 #define GL520_REG_TEMP2_MAX 0x17
89 #define GL520_REG_TEMP2_MAX_HYST 0x18
91 #define GL520_REG_FAN_INPUT 0x07
92 #define GL520_REG_FAN_MIN 0x08
93 #define GL520_REG_FAN_DIV 0x0f
94 #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
96 #define GL520_REG_ALARMS 0x12
97 #define GL520_REG_BEEP_MASK 0x10
98 #define GL520_REG_BEEP_ENABLE GL520_REG_CONF
101 * Function declarations
104 static int gl520_attach_adapter(struct i2c_adapter *adapter);
105 static int gl520_detect(struct i2c_adapter *adapter, int address, int kind);
106 static void gl520_init_client(struct i2c_client *client);
107 static int gl520_detach_client(struct i2c_client *client);
108 static int gl520_read_value(struct i2c_client *client, u8 reg);
109 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
110 static struct gl520_data *gl520_update_device(struct device *dev);
113 static struct i2c_driver gl520_driver = {
117 .id = I2C_DRIVERID_GL520,
118 .attach_adapter = gl520_attach_adapter,
119 .detach_client = gl520_detach_client,
124 struct i2c_client client;
125 struct device *hwmon_dev;
126 struct mutex update_lock;
127 char valid; /* zero until the following fields are valid */
128 unsigned long last_updated; /* in jiffies */
132 u8 in_input[5]; /* [0] = VVD */
133 u8 in_min[5]; /* [0] = VDD */
134 u8 in_max[5]; /* [0] = VDD */
153 #define sysfs_r(type, n, item, reg) \
154 static ssize_t get_##type##item (struct gl520_data *, char *, int); \
155 static ssize_t get_##type##n##item (struct device *, struct device_attribute *attr, char *); \
156 static ssize_t get_##type##n##item (struct device *dev, struct device_attribute *attr, char *buf) \
158 struct gl520_data *data = gl520_update_device(dev); \
159 return get_##type##item(data, buf, (n)); \
162 #define sysfs_w(type, n, item, reg) \
163 static ssize_t set_##type##item (struct i2c_client *, struct gl520_data *, const char *, size_t, int, int); \
164 static ssize_t set_##type##n##item (struct device *, struct device_attribute *attr, const char *, size_t); \
165 static ssize_t set_##type##n##item (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
167 struct i2c_client *client = to_i2c_client(dev); \
168 struct gl520_data *data = i2c_get_clientdata(client); \
169 return set_##type##item(client, data, buf, count, (n), reg); \
172 #define sysfs_rw_n(type, n, item, reg) \
173 sysfs_r(type, n, item, reg) \
174 sysfs_w(type, n, item, reg) \
175 static DEVICE_ATTR(type##n##item, S_IRUGO | S_IWUSR, get_##type##n##item, set_##type##n##item);
177 #define sysfs_ro_n(type, n, item, reg) \
178 sysfs_r(type, n, item, reg) \
179 static DEVICE_ATTR(type##n##item, S_IRUGO, get_##type##n##item, NULL);
181 #define sysfs_rw(type, item, reg) \
182 sysfs_r(type, 0, item, reg) \
183 sysfs_w(type, 0, item, reg) \
184 static DEVICE_ATTR(type##item, S_IRUGO | S_IWUSR, get_##type##0##item, set_##type##0##item);
186 #define sysfs_ro(type, item, reg) \
187 sysfs_r(type, 0, item, reg) \
188 static DEVICE_ATTR(type##item, S_IRUGO, get_##type##0##item, NULL);
191 #define sysfs_vid(n) \
192 sysfs_ro_n(cpu, n, _vid, GL520_REG_VID_INPUT)
194 #define sysfs_in(n) \
195 sysfs_ro_n(in, n, _input, GL520_REG_IN##n##INPUT) \
196 sysfs_rw_n(in, n, _min, GL520_REG_IN##n##_MIN) \
197 sysfs_rw_n(in, n, _max, GL520_REG_IN##n##_MAX) \
199 #define sysfs_fan(n) \
200 sysfs_ro_n(fan, n, _input, GL520_REG_FAN_INPUT) \
201 sysfs_rw_n(fan, n, _min, GL520_REG_FAN_MIN) \
202 sysfs_rw_n(fan, n, _div, GL520_REG_FAN_DIV)
204 #define sysfs_fan_off(n) \
205 sysfs_rw_n(fan, n, _off, GL520_REG_FAN_OFF) \
207 #define sysfs_temp(n) \
208 sysfs_ro_n(temp, n, _input, GL520_REG_TEMP##n##_INPUT) \
209 sysfs_rw_n(temp, n, _max, GL520_REG_TEMP##n##_MAX) \
210 sysfs_rw_n(temp, n, _max_hyst, GL520_REG_TEMP##n##_MAX_HYST)
212 #define sysfs_alarms() \
213 sysfs_ro(alarms, , GL520_REG_ALARMS) \
214 sysfs_rw(beep_enable, , GL520_REG_BEEP_ENABLE) \
215 sysfs_rw(beep_mask, , GL520_REG_BEEP_MASK)
236 static ssize_t get_cpu_vid(struct gl520_data *data, char *buf, int n)
238 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
241 #define VDD_FROM_REG(val) (((val)*95+2)/4)
242 #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
244 #define IN_FROM_REG(val) ((val)*19)
245 #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
247 static ssize_t get_in_input(struct gl520_data *data, char *buf, int n)
249 u8 r = data->in_input[n];
252 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
254 return sprintf(buf, "%d\n", IN_FROM_REG(r));
257 static ssize_t get_in_min(struct gl520_data *data, char *buf, int n)
259 u8 r = data->in_min[n];
262 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
264 return sprintf(buf, "%d\n", IN_FROM_REG(r));
267 static ssize_t get_in_max(struct gl520_data *data, char *buf, int n)
269 u8 r = data->in_max[n];
272 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
274 return sprintf(buf, "%d\n", IN_FROM_REG(r));
277 static ssize_t set_in_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
279 long v = simple_strtol(buf, NULL, 10);
282 mutex_lock(&data->update_lock);
292 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r);
294 gl520_write_value(client, reg, r);
296 mutex_unlock(&data->update_lock);
300 static ssize_t set_in_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
302 long v = simple_strtol(buf, NULL, 10);
310 mutex_lock(&data->update_lock);
315 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8));
317 gl520_write_value(client, reg, r);
319 mutex_unlock(&data->update_lock);
323 #define DIV_FROM_REG(val) (1 << (val))
324 #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
325 #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255));
327 static ssize_t get_fan_input(struct gl520_data *data, char *buf, int n)
329 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n - 1], data->fan_div[n - 1]));
332 static ssize_t get_fan_min(struct gl520_data *data, char *buf, int n)
334 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n - 1], data->fan_div[n - 1]));
337 static ssize_t get_fan_div(struct gl520_data *data, char *buf, int n)
339 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n - 1]));
342 static ssize_t get_fan_off(struct gl520_data *data, char *buf, int n)
344 return sprintf(buf, "%d\n", data->fan_off);
347 static ssize_t set_fan_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
349 unsigned long v = simple_strtoul(buf, NULL, 10);
352 mutex_lock(&data->update_lock);
353 r = FAN_TO_REG(v, data->fan_div[n - 1]);
354 data->fan_min[n - 1] = r;
357 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8));
359 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r);
361 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
362 if (data->fan_min[n - 1] == 0)
363 data->alarm_mask &= (n == 1) ? ~0x20 : ~0x40;
365 data->alarm_mask |= (n == 1) ? 0x20 : 0x40;
366 data->beep_mask &= data->alarm_mask;
367 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
369 mutex_unlock(&data->update_lock);
373 static ssize_t set_fan_div(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
375 unsigned long v = simple_strtoul(buf, NULL, 10);
379 case 1: r = 0; break;
380 case 2: r = 1; break;
381 case 4: r = 2; break;
382 case 8: r = 3; break;
384 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
388 mutex_lock(&data->update_lock);
389 data->fan_div[n - 1] = r;
392 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xc0) | (r << 6));
394 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x30) | (r << 4));
396 mutex_unlock(&data->update_lock);
400 static ssize_t set_fan_off(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
402 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
404 mutex_lock(&data->update_lock);
406 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x0c) | (r << 2));
407 mutex_unlock(&data->update_lock);
411 #define TEMP_FROM_REG(val) (((val) - 130) * 1000)
412 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
414 static ssize_t get_temp_input(struct gl520_data *data, char *buf, int n)
416 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n - 1]));
419 static ssize_t get_temp_max(struct gl520_data *data, char *buf, int n)
421 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n - 1]));
424 static ssize_t get_temp_max_hyst(struct gl520_data *data, char *buf, int n)
426 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n - 1]));
429 static ssize_t set_temp_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
431 long v = simple_strtol(buf, NULL, 10);
433 mutex_lock(&data->update_lock);
434 data->temp_max[n - 1] = TEMP_TO_REG(v);
435 gl520_write_value(client, reg, data->temp_max[n - 1]);
436 mutex_unlock(&data->update_lock);
440 static ssize_t set_temp_max_hyst(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
442 long v = simple_strtol(buf, NULL, 10);
444 mutex_lock(&data->update_lock);
445 data->temp_max_hyst[n - 1] = TEMP_TO_REG(v);
446 gl520_write_value(client, reg, data->temp_max_hyst[n - 1]);
447 mutex_unlock(&data->update_lock);
451 static ssize_t get_alarms(struct gl520_data *data, char *buf, int n)
453 return sprintf(buf, "%d\n", data->alarms);
456 static ssize_t get_beep_enable(struct gl520_data *data, char *buf, int n)
458 return sprintf(buf, "%d\n", data->beep_enable);
461 static ssize_t get_beep_mask(struct gl520_data *data, char *buf, int n)
463 return sprintf(buf, "%d\n", data->beep_mask);
466 static ssize_t set_beep_enable(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
468 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
470 mutex_lock(&data->update_lock);
471 data->beep_enable = !r;
472 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x04) | (r << 2));
473 mutex_unlock(&data->update_lock);
477 static ssize_t set_beep_mask(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
479 u8 r = simple_strtoul(buf, NULL, 10);
481 mutex_lock(&data->update_lock);
482 r &= data->alarm_mask;
484 gl520_write_value(client, reg, r);
485 mutex_unlock(&data->update_lock);
489 static struct attribute *gl520_attributes[] = {
490 &dev_attr_cpu0_vid.attr,
492 &dev_attr_in0_input.attr,
493 &dev_attr_in0_min.attr,
494 &dev_attr_in0_max.attr,
495 &dev_attr_in1_input.attr,
496 &dev_attr_in1_min.attr,
497 &dev_attr_in1_max.attr,
498 &dev_attr_in2_input.attr,
499 &dev_attr_in2_min.attr,
500 &dev_attr_in2_max.attr,
501 &dev_attr_in3_input.attr,
502 &dev_attr_in3_min.attr,
503 &dev_attr_in3_max.attr,
505 &dev_attr_fan1_input.attr,
506 &dev_attr_fan1_min.attr,
507 &dev_attr_fan1_div.attr,
508 &dev_attr_fan1_off.attr,
509 &dev_attr_fan2_input.attr,
510 &dev_attr_fan2_min.attr,
511 &dev_attr_fan2_div.attr,
513 &dev_attr_temp1_input.attr,
514 &dev_attr_temp1_max.attr,
515 &dev_attr_temp1_max_hyst.attr,
517 &dev_attr_alarms.attr,
518 &dev_attr_beep_enable.attr,
519 &dev_attr_beep_mask.attr,
523 static const struct attribute_group gl520_group = {
524 .attrs = gl520_attributes,
527 static struct attribute *gl520_attributes_opt[] = {
528 &dev_attr_in4_input.attr,
529 &dev_attr_in4_min.attr,
530 &dev_attr_in4_max.attr,
532 &dev_attr_temp2_input.attr,
533 &dev_attr_temp2_max.attr,
534 &dev_attr_temp2_max_hyst.attr,
538 static const struct attribute_group gl520_group_opt = {
539 .attrs = gl520_attributes_opt,
547 static int gl520_attach_adapter(struct i2c_adapter *adapter)
549 if (!(adapter->class & I2C_CLASS_HWMON))
551 return i2c_probe(adapter, &addr_data, gl520_detect);
554 static int gl520_detect(struct i2c_adapter *adapter, int address, int kind)
556 struct i2c_client *new_client;
557 struct gl520_data *data;
560 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
561 I2C_FUNC_SMBUS_WORD_DATA))
564 /* OK. For now, we presume we have a valid client. We now create the
565 client structure, even though we cannot fill it completely yet.
566 But it allows us to access gl520_{read,write}_value. */
568 if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) {
573 new_client = &data->client;
574 i2c_set_clientdata(new_client, data);
575 new_client->addr = address;
576 new_client->adapter = adapter;
577 new_client->driver = &gl520_driver;
578 new_client->flags = 0;
580 /* Determine the chip type. */
582 if ((gl520_read_value(new_client, GL520_REG_CHIP_ID) != 0x20) ||
583 ((gl520_read_value(new_client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
584 ((gl520_read_value(new_client, GL520_REG_CONF) & 0x80) != 0x00)) {
585 dev_dbg(&new_client->dev, "Unknown chip type, skipping\n");
590 /* Fill in the remaining client fields */
591 strlcpy(new_client->name, "gl520sm", I2C_NAME_SIZE);
593 mutex_init(&data->update_lock);
595 /* Tell the I2C layer a new client has arrived */
596 if ((err = i2c_attach_client(new_client)))
599 /* Initialize the GL520SM chip */
600 gl520_init_client(new_client);
602 /* Register sysfs hooks */
603 if ((err = sysfs_create_group(&new_client->dev.kobj, &gl520_group)))
606 if (data->two_temps) {
607 if ((err = device_create_file(&new_client->dev,
608 &dev_attr_temp2_input))
609 || (err = device_create_file(&new_client->dev,
610 &dev_attr_temp2_max))
611 || (err = device_create_file(&new_client->dev,
612 &dev_attr_temp2_max_hyst)))
613 goto exit_remove_files;
615 if ((err = device_create_file(&new_client->dev,
616 &dev_attr_in4_input))
617 || (err = device_create_file(&new_client->dev,
619 || (err = device_create_file(&new_client->dev,
621 goto exit_remove_files;
625 data->hwmon_dev = hwmon_device_register(&new_client->dev);
626 if (IS_ERR(data->hwmon_dev)) {
627 err = PTR_ERR(data->hwmon_dev);
628 goto exit_remove_files;
634 sysfs_remove_group(&new_client->dev.kobj, &gl520_group);
635 sysfs_remove_group(&new_client->dev.kobj, &gl520_group_opt);
637 i2c_detach_client(new_client);
645 /* Called when we have found a new GL520SM. */
646 static void gl520_init_client(struct i2c_client *client)
648 struct gl520_data *data = i2c_get_clientdata(client);
651 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
653 data->alarm_mask = 0xff;
654 data->vrm = vid_which_vrm();
656 if (extra_sensor_type == 1)
658 else if (extra_sensor_type == 2)
660 data->two_temps = !(conf & 0x10);
662 /* If IRQ# is disabled, we can safely force comparator mode */
666 /* Enable monitoring if needed */
670 gl520_write_value(client, GL520_REG_CONF, conf);
672 gl520_update_device(&(client->dev));
674 if (data->fan_min[0] == 0)
675 data->alarm_mask &= ~0x20;
676 if (data->fan_min[1] == 0)
677 data->alarm_mask &= ~0x40;
679 data->beep_mask &= data->alarm_mask;
680 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
683 static int gl520_detach_client(struct i2c_client *client)
685 struct gl520_data *data = i2c_get_clientdata(client);
688 hwmon_device_unregister(data->hwmon_dev);
689 sysfs_remove_group(&client->dev.kobj, &gl520_group);
690 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
692 if ((err = i2c_detach_client(client)))
700 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized
701 GL520 uses a high-byte first convention */
702 static int gl520_read_value(struct i2c_client *client, u8 reg)
704 if ((reg >= 0x07) && (reg <= 0x0c))
705 return swab16(i2c_smbus_read_word_data(client, reg));
707 return i2c_smbus_read_byte_data(client, reg);
710 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
712 if ((reg >= 0x07) && (reg <= 0x0c))
713 return i2c_smbus_write_word_data(client, reg, swab16(value));
715 return i2c_smbus_write_byte_data(client, reg, value);
719 static struct gl520_data *gl520_update_device(struct device *dev)
721 struct i2c_client *client = to_i2c_client(dev);
722 struct gl520_data *data = i2c_get_clientdata(client);
725 mutex_lock(&data->update_lock);
727 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
729 dev_dbg(&client->dev, "Starting gl520sm update\n");
731 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
732 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
733 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
735 val = gl520_read_value(client, GL520_REG_IN0_LIMIT);
736 data->in_min[0] = val & 0xff;
737 data->in_max[0] = (val >> 8) & 0xff;
738 val = gl520_read_value(client, GL520_REG_IN1_LIMIT);
739 data->in_min[1] = val & 0xff;
740 data->in_max[1] = (val >> 8) & 0xff;
741 val = gl520_read_value(client, GL520_REG_IN2_LIMIT);
742 data->in_min[2] = val & 0xff;
743 data->in_max[2] = (val >> 8) & 0xff;
744 val = gl520_read_value(client, GL520_REG_IN3_LIMIT);
745 data->in_min[3] = val & 0xff;
746 data->in_max[3] = (val >> 8) & 0xff;
748 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
749 data->fan_input[0] = (val >> 8) & 0xff;
750 data->fan_input[1] = val & 0xff;
752 val = gl520_read_value(client, GL520_REG_FAN_MIN);
753 data->fan_min[0] = (val >> 8) & 0xff;
754 data->fan_min[1] = val & 0xff;
756 data->temp_input[0] = gl520_read_value(client, GL520_REG_TEMP1_INPUT);
757 data->temp_max[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX);
758 data->temp_max_hyst[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX_HYST);
760 val = gl520_read_value(client, GL520_REG_FAN_DIV);
761 data->fan_div[0] = (val >> 6) & 0x03;
762 data->fan_div[1] = (val >> 4) & 0x03;
763 data->fan_off = (val >> 2) & 0x01;
765 data->alarms &= data->alarm_mask;
767 val = gl520_read_value(client, GL520_REG_CONF);
768 data->beep_enable = !((val >> 2) & 1);
770 data->in_input[0] = gl520_read_value(client, GL520_REG_IN0_INPUT);
771 data->in_input[1] = gl520_read_value(client, GL520_REG_IN1_INPUT);
772 data->in_input[2] = gl520_read_value(client, GL520_REG_IN2_INPUT);
773 data->in_input[3] = gl520_read_value(client, GL520_REG_IN3_INPUT);
775 /* Temp1 and Vin4 are the same input */
776 if (data->two_temps) {
777 data->temp_input[1] = gl520_read_value(client, GL520_REG_TEMP2_INPUT);
778 data->temp_max[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX);
779 data->temp_max_hyst[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX_HYST);
781 data->in_input[4] = gl520_read_value(client, GL520_REG_IN4_INPUT);
782 data->in_min[4] = gl520_read_value(client, GL520_REG_IN4_MIN);
783 data->in_max[4] = gl520_read_value(client, GL520_REG_IN4_MAX);
786 data->last_updated = jiffies;
790 mutex_unlock(&data->update_lock);
796 static int __init sensors_gl520sm_init(void)
798 return i2c_add_driver(&gl520_driver);
801 static void __exit sensors_gl520sm_exit(void)
803 i2c_del_driver(&gl520_driver);
807 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
808 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
809 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
810 MODULE_DESCRIPTION("GL520SM driver");
811 MODULE_LICENSE("GPL");
813 module_init(sensors_gl520sm_init);
814 module_exit(sensors_gl520sm_exit);