2 * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware
4 * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and
5 * Kyosti Malkki <kmalkki@cc.hut.fi>
6 * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and
7 * Jean Delvare <khali@linux-fr.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare
24 * and advice of Greg Kroah-Hartman.
26 * Notes about the port:
27 * Release 0x00 of the GL518SM chipset doesn't support reading of in0,
28 * in1 nor in2. The original driver had an ugly workaround to get them
29 * anyway (changing limits and watching alarms trigger and wear off).
30 * We did not keep that part of the original driver in the Linux 2.6
31 * version, since it was making the driver significantly more complex
32 * with no real benefit.
35 * 2004-01-28 Original port. (Hong-Gunn Chew)
36 * 2004-01-31 Code review and approval. (Jean Delvare)
39 #include <linux/config.h>
40 #include <linux/module.h>
41 #include <linux/init.h>
42 #include <linux/slab.h>
43 #include <linux/i2c.h>
44 #include <linux/i2c-sensor.h>
46 /* Addresses to scan */
47 static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
48 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
50 /* Insmod parameters */
51 SENSORS_INSMOD_2(gl518sm_r00, gl518sm_r80);
53 /* Many GL518 constants specified below */
55 /* The GL518 registers */
56 #define GL518_REG_CHIP_ID 0x00
57 #define GL518_REG_REVISION 0x01
58 #define GL518_REG_VENDOR_ID 0x02
59 #define GL518_REG_CONF 0x03
60 #define GL518_REG_TEMP_IN 0x04
61 #define GL518_REG_TEMP_MAX 0x05
62 #define GL518_REG_TEMP_HYST 0x06
63 #define GL518_REG_FAN_COUNT 0x07
64 #define GL518_REG_FAN_LIMIT 0x08
65 #define GL518_REG_VIN1_LIMIT 0x09
66 #define GL518_REG_VIN2_LIMIT 0x0a
67 #define GL518_REG_VIN3_LIMIT 0x0b
68 #define GL518_REG_VDD_LIMIT 0x0c
69 #define GL518_REG_VIN3 0x0d
70 #define GL518_REG_MISC 0x0f
71 #define GL518_REG_ALARM 0x10
72 #define GL518_REG_MASK 0x11
73 #define GL518_REG_INT 0x12
74 #define GL518_REG_VIN2 0x13
75 #define GL518_REG_VIN1 0x14
76 #define GL518_REG_VDD 0x15
80 * Conversions. Rounding and limit checking is only done on the TO_REG
81 * variants. Note that you should be a bit careful with which arguments
82 * these macros are called: arguments may be evaluated more than once.
83 * Fixing this is just not worth it.
86 #define RAW_FROM_REG(val) val
88 #define BOOL_FROM_REG(val) ((val)?0:1)
89 #define BOOL_TO_REG(val) ((val)?0:1)
91 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \
92 (val)-500:(val)+500)/1000)+119),0,255))
93 #define TEMP_FROM_REG(val) (((val) - 119) * 1000)
95 static inline u8 FAN_TO_REG(long rpm, int div)
100 rpmdiv = SENSORS_LIMIT(rpm, 1, 1920000) * div;
101 return SENSORS_LIMIT((960000 + rpmdiv / 2) / rpmdiv, 1, 255);
103 #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (960000/((val)*(div))))
105 #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
106 #define IN_FROM_REG(val) ((val)*19)
108 #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
109 #define VDD_FROM_REG(val) (((val)*95+2)/4)
111 #define DIV_TO_REG(val) ((val)==4?2:(val)==2?1:(val)==1?0:3)
112 #define DIV_FROM_REG(val) (1 << (val))
114 #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask)
115 #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f)
117 /* Each client has this additional data */
119 struct i2c_client client;
122 struct semaphore update_lock;
123 char valid; /* !=0 if following fields are valid */
124 unsigned long last_updated; /* In jiffies */
126 u8 voltage_in[4]; /* Register values; [0] = VDD */
127 u8 voltage_min[4]; /* Register values; [0] = VDD */
128 u8 voltage_max[4]; /* Register values; [0] = VDD */
129 u8 iter_voltage_in[4]; /* Register values; [0] = VDD */
132 u8 fan_div[2]; /* Register encoding, shifted right */
133 u8 fan_auto1; /* Boolean */
134 u8 temp_in; /* Register values */
135 u8 temp_max; /* Register values */
136 u8 temp_hyst; /* Register values */
137 u8 alarms; /* Register value */
138 u8 alarm_mask; /* Register value */
139 u8 beep_mask; /* Register value */
140 u8 beep_enable; /* Boolean */
143 static int gl518_attach_adapter(struct i2c_adapter *adapter);
144 static int gl518_detect(struct i2c_adapter *adapter, int address, int kind);
145 static void gl518_init_client(struct i2c_client *client);
146 static int gl518_detach_client(struct i2c_client *client);
147 static int gl518_read_value(struct i2c_client *client, u8 reg);
148 static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value);
149 static struct gl518_data *gl518_update_device(struct device *dev);
151 /* This is the driver that will be inserted */
152 static struct i2c_driver gl518_driver = {
153 .owner = THIS_MODULE,
155 .id = I2C_DRIVERID_GL518,
156 .flags = I2C_DF_NOTIFY,
157 .attach_adapter = gl518_attach_adapter,
158 .detach_client = gl518_detach_client,
171 #define show(type, suffix, value) \
172 static ssize_t show_##suffix(struct device *dev, char *buf) \
174 struct gl518_data *data = gl518_update_device(dev); \
175 return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \
178 #define show_fan(suffix, value, index) \
179 static ssize_t show_##suffix(struct device *dev, char *buf) \
181 struct gl518_data *data = gl518_update_device(dev); \
182 return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[index], \
183 DIV_FROM_REG(data->fan_div[index]))); \
186 show(TEMP, temp_input1, temp_in);
187 show(TEMP, temp_max1, temp_max);
188 show(TEMP, temp_hyst1, temp_hyst);
189 show(BOOL, fan_auto1, fan_auto1);
190 show_fan(fan_input1, fan_in, 0);
191 show_fan(fan_input2, fan_in, 1);
192 show_fan(fan_min1, fan_min, 0);
193 show_fan(fan_min2, fan_min, 1);
194 show(DIV, fan_div1, fan_div[0]);
195 show(DIV, fan_div2, fan_div[1]);
196 show(VDD, in_input0, voltage_in[0]);
197 show(IN, in_input1, voltage_in[1]);
198 show(IN, in_input2, voltage_in[2]);
199 show(IN, in_input3, voltage_in[3]);
200 show(VDD, in_min0, voltage_min[0]);
201 show(IN, in_min1, voltage_min[1]);
202 show(IN, in_min2, voltage_min[2]);
203 show(IN, in_min3, voltage_min[3]);
204 show(VDD, in_max0, voltage_max[0]);
205 show(IN, in_max1, voltage_max[1]);
206 show(IN, in_max2, voltage_max[2]);
207 show(IN, in_max3, voltage_max[3]);
208 show(RAW, alarms, alarms);
209 show(BOOL, beep_enable, beep_enable);
210 show(BEEP_MASK, beep_mask, beep_mask);
212 #define set(type, suffix, value, reg) \
213 static ssize_t set_##suffix(struct device *dev, const char *buf, \
216 struct i2c_client *client = to_i2c_client(dev); \
217 struct gl518_data *data = i2c_get_clientdata(client); \
218 long val = simple_strtol(buf, NULL, 10); \
219 data->value = type##_TO_REG(val); \
220 gl518_write_value(client, reg, data->value); \
224 #define set_bits(type, suffix, value, reg, mask, shift) \
225 static ssize_t set_##suffix(struct device *dev, const char *buf, \
228 struct i2c_client *client = to_i2c_client(dev); \
229 struct gl518_data *data = i2c_get_clientdata(client); \
230 int regvalue = gl518_read_value(client, reg); \
231 unsigned long val = simple_strtoul(buf, NULL, 10); \
232 data->value = type##_TO_REG(val); \
233 regvalue = (regvalue & ~mask) | (data->value << shift); \
234 gl518_write_value(client, reg, regvalue); \
238 #define set_low(type, suffix, value, reg) \
239 set_bits(type, suffix, value, reg, 0x00ff, 0)
240 #define set_high(type, suffix, value, reg) \
241 set_bits(type, suffix, value, reg, 0xff00, 8)
243 set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX);
244 set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST);
245 set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3);
246 set_bits(DIV, fan_div1, fan_div[0], GL518_REG_MISC, 0xc0, 6);
247 set_bits(DIV, fan_div2, fan_div[1], GL518_REG_MISC, 0x30, 4);
248 set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT);
249 set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT);
250 set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT);
251 set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT);
252 set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT);
253 set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT);
254 set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT);
255 set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT);
256 set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2);
257 set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM);
259 static ssize_t set_fan_min1(struct device *dev, const char *buf, size_t count)
261 struct i2c_client *client = to_i2c_client(dev);
262 struct gl518_data *data = i2c_get_clientdata(client);
263 int regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT);
265 data->fan_min[0] = FAN_TO_REG(simple_strtoul(buf, NULL, 10),
266 DIV_FROM_REG(data->fan_div[0]));
267 regvalue = (regvalue & 0x00ff) | (data->fan_min[0] << 8);
268 gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue);
270 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);
271 if (data->fan_min[0] == 0)
272 data->alarm_mask &= ~0x20;
274 data->alarm_mask |= 0x20;
275 data->beep_mask &= data->alarm_mask;
276 gl518_write_value(client, GL518_REG_ALARM, data->beep_mask);
281 static ssize_t set_fan_min2(struct device *dev, const char *buf, size_t count)
283 struct i2c_client *client = to_i2c_client(dev);
284 struct gl518_data *data = i2c_get_clientdata(client);
285 int regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT);
287 data->fan_min[1] = FAN_TO_REG(simple_strtoul(buf, NULL, 10),
288 DIV_FROM_REG(data->fan_div[1]));
289 regvalue = (regvalue & 0xff00) | data->fan_min[1];
290 gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue);
292 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);
293 if (data->fan_min[1] == 0)
294 data->alarm_mask &= ~0x40;
296 data->alarm_mask |= 0x40;
297 data->beep_mask &= data->alarm_mask;
298 gl518_write_value(client, GL518_REG_ALARM, data->beep_mask);
303 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
304 static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1);
305 static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO,
306 show_temp_hyst1, set_temp_hyst1);
307 static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1);
308 static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input1, NULL);
309 static DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input2, NULL);
310 static DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, show_fan_min1, set_fan_min1);
311 static DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, show_fan_min2, set_fan_min2);
312 static DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, show_fan_div1, set_fan_div1);
313 static DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, show_fan_div2, set_fan_div2);
314 static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL);
315 static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL);
316 static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL);
317 static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL);
318 static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0);
319 static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1);
320 static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2);
321 static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3);
322 static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0);
323 static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1);
324 static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2);
325 static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3);
326 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
327 static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO,
328 show_beep_enable, set_beep_enable);
329 static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO,
330 show_beep_mask, set_beep_mask);
336 static int gl518_attach_adapter(struct i2c_adapter *adapter)
338 if (!(adapter->class & I2C_CLASS_HWMON))
340 return i2c_detect(adapter, &addr_data, gl518_detect);
343 static int gl518_detect(struct i2c_adapter *adapter, int address, int kind)
346 struct i2c_client *new_client;
347 struct gl518_data *data;
350 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
351 I2C_FUNC_SMBUS_WORD_DATA))
354 /* OK. For now, we presume we have a valid client. We now create the
355 client structure, even though we cannot fill it completely yet.
356 But it allows us to access gl518_{read,write}_value. */
358 if (!(data = kmalloc(sizeof(struct gl518_data), GFP_KERNEL))) {
362 memset(data, 0, sizeof(struct gl518_data));
364 new_client = &data->client;
365 i2c_set_clientdata(new_client, data);
367 new_client->addr = address;
368 new_client->adapter = adapter;
369 new_client->driver = &gl518_driver;
370 new_client->flags = 0;
372 /* Now, we do the remaining detection. */
375 if ((gl518_read_value(new_client, GL518_REG_CHIP_ID) != 0x80)
376 || (gl518_read_value(new_client, GL518_REG_CONF) & 0x80))
380 /* Determine the chip type. */
382 i = gl518_read_value(new_client, GL518_REG_REVISION);
385 } else if (i == 0x80) {
389 dev_info(&adapter->dev,
390 "Ignoring 'force' parameter for unknown "
391 "chip at adapter %d, address 0x%02x\n",
392 i2c_adapter_id(adapter), address);
397 /* Fill in the remaining client fields */
398 strlcpy(new_client->name, "gl518sm", I2C_NAME_SIZE);
399 new_client->id = gl518_id++;
402 init_MUTEX(&data->update_lock);
404 /* Tell the I2C layer a new client has arrived */
405 if ((err = i2c_attach_client(new_client)))
408 /* Initialize the GL518SM chip */
409 data->alarm_mask = 0xff;
410 data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0;
411 gl518_init_client((struct i2c_client *) new_client);
413 /* Register sysfs hooks */
414 device_create_file(&new_client->dev, &dev_attr_in0_input);
415 device_create_file(&new_client->dev, &dev_attr_in1_input);
416 device_create_file(&new_client->dev, &dev_attr_in2_input);
417 device_create_file(&new_client->dev, &dev_attr_in3_input);
418 device_create_file(&new_client->dev, &dev_attr_in0_min);
419 device_create_file(&new_client->dev, &dev_attr_in1_min);
420 device_create_file(&new_client->dev, &dev_attr_in2_min);
421 device_create_file(&new_client->dev, &dev_attr_in3_min);
422 device_create_file(&new_client->dev, &dev_attr_in0_max);
423 device_create_file(&new_client->dev, &dev_attr_in1_max);
424 device_create_file(&new_client->dev, &dev_attr_in2_max);
425 device_create_file(&new_client->dev, &dev_attr_in3_max);
426 device_create_file(&new_client->dev, &dev_attr_fan1_auto);
427 device_create_file(&new_client->dev, &dev_attr_fan1_input);
428 device_create_file(&new_client->dev, &dev_attr_fan2_input);
429 device_create_file(&new_client->dev, &dev_attr_fan1_min);
430 device_create_file(&new_client->dev, &dev_attr_fan2_min);
431 device_create_file(&new_client->dev, &dev_attr_fan1_div);
432 device_create_file(&new_client->dev, &dev_attr_fan2_div);
433 device_create_file(&new_client->dev, &dev_attr_temp1_input);
434 device_create_file(&new_client->dev, &dev_attr_temp1_max);
435 device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
436 device_create_file(&new_client->dev, &dev_attr_alarms);
437 device_create_file(&new_client->dev, &dev_attr_beep_enable);
438 device_create_file(&new_client->dev, &dev_attr_beep_mask);
442 /* OK, this is not exactly good programming practice, usually. But it is
443 very code-efficient in this case. */
452 /* Called when we have found a new GL518SM.
453 Note that we preserve D4:NoFan2 and D2:beep_enable. */
454 static void gl518_init_client(struct i2c_client *client)
456 /* Make sure we leave D7:Reset untouched */
457 u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f;
459 /* Comparator mode (D3=0), standby mode (D6=0) */
460 gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37));
462 /* Never interrupts */
463 gl518_write_value(client, GL518_REG_MASK, 0x00);
465 /* Clear status register (D5=1), start (D6=1) */
466 gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue);
467 gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue);
470 static int gl518_detach_client(struct i2c_client *client)
474 if ((err = i2c_detach_client(client))) {
475 dev_err(&client->dev, "Client deregistration failed, "
476 "client not detached.\n");
480 kfree(i2c_get_clientdata(client));
485 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized
486 GL518 uses a high-byte first convention, which is exactly opposite to
487 the usual practice. */
488 static int gl518_read_value(struct i2c_client *client, u8 reg)
490 if ((reg >= 0x07) && (reg <= 0x0c))
491 return swab16(i2c_smbus_read_word_data(client, reg));
493 return i2c_smbus_read_byte_data(client, reg);
496 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized
497 GL518 uses a high-byte first convention, which is exactly opposite to
498 the usual practice. */
499 static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value)
501 if ((reg >= 0x07) && (reg <= 0x0c))
502 return i2c_smbus_write_word_data(client, reg, swab16(value));
504 return i2c_smbus_write_byte_data(client, reg, value);
507 static struct gl518_data *gl518_update_device(struct device *dev)
509 struct i2c_client *client = to_i2c_client(dev);
510 struct gl518_data *data = i2c_get_clientdata(client);
513 down(&data->update_lock);
515 if ((jiffies - data->last_updated > HZ + HZ / 2) ||
516 (jiffies < data->last_updated) || !data->valid) {
517 dev_dbg(&client->dev, "Starting gl518 update\n");
519 data->alarms = gl518_read_value(client, GL518_REG_INT);
520 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);
522 val = gl518_read_value(client, GL518_REG_VDD_LIMIT);
523 data->voltage_min[0] = val & 0xff;
524 data->voltage_max[0] = (val >> 8) & 0xff;
525 val = gl518_read_value(client, GL518_REG_VIN1_LIMIT);
526 data->voltage_min[1] = val & 0xff;
527 data->voltage_max[1] = (val >> 8) & 0xff;
528 val = gl518_read_value(client, GL518_REG_VIN2_LIMIT);
529 data->voltage_min[2] = val & 0xff;
530 data->voltage_max[2] = (val >> 8) & 0xff;
531 val = gl518_read_value(client, GL518_REG_VIN3_LIMIT);
532 data->voltage_min[3] = val & 0xff;
533 data->voltage_max[3] = (val >> 8) & 0xff;
535 val = gl518_read_value(client, GL518_REG_FAN_COUNT);
536 data->fan_in[0] = (val >> 8) & 0xff;
537 data->fan_in[1] = val & 0xff;
539 val = gl518_read_value(client, GL518_REG_FAN_LIMIT);
540 data->fan_min[0] = (val >> 8) & 0xff;
541 data->fan_min[1] = val & 0xff;
543 data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN);
545 gl518_read_value(client, GL518_REG_TEMP_MAX);
547 gl518_read_value(client, GL518_REG_TEMP_HYST);
549 val = gl518_read_value(client, GL518_REG_MISC);
550 data->fan_div[0] = (val >> 6) & 0x03;
551 data->fan_div[1] = (val >> 4) & 0x03;
552 data->fan_auto1 = (val >> 3) & 0x01;
554 data->alarms &= data->alarm_mask;
556 val = gl518_read_value(client, GL518_REG_CONF);
557 data->beep_enable = (val >> 2) & 1;
559 if (data->type != gl518sm_r00) {
560 data->voltage_in[0] =
561 gl518_read_value(client, GL518_REG_VDD);
562 data->voltage_in[1] =
563 gl518_read_value(client, GL518_REG_VIN1);
564 data->voltage_in[2] =
565 gl518_read_value(client, GL518_REG_VIN2);
567 data->voltage_in[3] =
568 gl518_read_value(client, GL518_REG_VIN3);
570 data->last_updated = jiffies;
574 up(&data->update_lock);
579 static int __init sensors_gl518sm_init(void)
581 return i2c_add_driver(&gl518_driver);
584 static void __exit sensors_gl518sm_exit(void)
586 i2c_del_driver(&gl518_driver);
589 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
590 "Kyosti Malkki <kmalkki@cc.hut.fi> and "
591 "Hong-Gunn Chew <hglinux@gunnet.org>");
592 MODULE_DESCRIPTION("GL518SM driver");
593 MODULE_LICENSE("GPL");
595 module_init(sensors_gl518sm_init);
596 module_exit(sensors_gl518sm_exit);