blob: baee60e44b521c25ca5f0fe1009503759ea3fe38 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Jean Delvare0cacdf22005-07-29 12:15:12 -070027#include <linux/jiffies.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <linux/i2c.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040029#include <linux/hwmon.h>
Jean Delvare303760b2005-07-31 21:52:01 +020030#include <linux/hwmon-vid.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040031#include <linux/err.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33/* Type of the extra sensor */
34static unsigned short extra_sensor_type;
35module_param(extra_sensor_type, ushort, 0);
36MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
37
38/* Addresses to scan */
39static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
41/* Insmod parameters */
Jean Delvaref4b50262005-07-31 21:49:03 +020042I2C_CLIENT_INSMOD_1(gl520sm);
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
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
57#define GL520_REG_IN0_INPUT 0x15
58#define GL520_REG_IN0_LIMIT 0x0c
59#define GL520_REG_IN0_MIN GL520_REG_IN0_LIMIT
60#define GL520_REG_IN0_MAX GL520_REG_IN0_LIMIT
61
62#define GL520_REG_IN1_INPUT 0x14
63#define GL520_REG_IN1_LIMIT 0x09
64#define GL520_REG_IN1_MIN GL520_REG_IN1_LIMIT
65#define GL520_REG_IN1_MAX GL520_REG_IN1_LIMIT
66
67#define GL520_REG_IN2_INPUT 0x13
68#define GL520_REG_IN2_LIMIT 0x0a
69#define GL520_REG_IN2_MIN GL520_REG_IN2_LIMIT
70#define GL520_REG_IN2_MAX GL520_REG_IN2_LIMIT
71
72#define GL520_REG_IN3_INPUT 0x0d
73#define GL520_REG_IN3_LIMIT 0x0b
74#define GL520_REG_IN3_MIN GL520_REG_IN3_LIMIT
75#define GL520_REG_IN3_MAX GL520_REG_IN3_LIMIT
76
77#define GL520_REG_IN4_INPUT 0x0e
78#define GL520_REG_IN4_MAX 0x17
79#define GL520_REG_IN4_MIN 0x18
80
81#define GL520_REG_TEMP1_INPUT 0x04
82#define GL520_REG_TEMP1_MAX 0x05
83#define GL520_REG_TEMP1_MAX_HYST 0x06
84
85#define GL520_REG_TEMP2_INPUT 0x0e
86#define GL520_REG_TEMP2_MAX 0x17
87#define GL520_REG_TEMP2_MAX_HYST 0x18
88
89#define GL520_REG_FAN_INPUT 0x07
90#define GL520_REG_FAN_MIN 0x08
91#define GL520_REG_FAN_DIV 0x0f
92#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
93
94#define GL520_REG_ALARMS 0x12
95#define GL520_REG_BEEP_MASK 0x10
96#define GL520_REG_BEEP_ENABLE GL520_REG_CONF
97
98/*
99 * Function declarations
100 */
101
102static int gl520_attach_adapter(struct i2c_adapter *adapter);
103static int gl520_detect(struct i2c_adapter *adapter, int address, int kind);
104static void gl520_init_client(struct i2c_client *client);
105static int gl520_detach_client(struct i2c_client *client);
106static int gl520_read_value(struct i2c_client *client, u8 reg);
107static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
108static struct gl520_data *gl520_update_device(struct device *dev);
109
110/* Driver data */
111static struct i2c_driver gl520_driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100112 .driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100113 .name = "gl520sm",
114 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 .id = I2C_DRIVERID_GL520,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 .attach_adapter = gl520_attach_adapter,
117 .detach_client = gl520_detach_client,
118};
119
120/* Client data */
121struct gl520_data {
122 struct i2c_client client;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400123 struct class_device *class_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 struct semaphore update_lock;
125 char valid; /* zero until the following fields are valid */
126 unsigned long last_updated; /* in jiffies */
127
128 u8 vid;
129 u8 vrm;
130 u8 in_input[5]; /* [0] = VVD */
131 u8 in_min[5]; /* [0] = VDD */
132 u8 in_max[5]; /* [0] = VDD */
133 u8 fan_input[2];
134 u8 fan_min[2];
135 u8 fan_div[2];
136 u8 fan_off;
137 u8 temp_input[2];
138 u8 temp_max[2];
139 u8 temp_max_hyst[2];
140 u8 alarms;
141 u8 beep_enable;
142 u8 beep_mask;
143 u8 alarm_mask;
144 u8 two_temps;
145};
146
147/*
148 * Sysfs stuff
149 */
150
151#define sysfs_r(type, n, item, reg) \
152static ssize_t get_##type##item (struct gl520_data *, char *, int); \
Yani Ioannou30f74292005-05-17 06:41:35 -0400153static ssize_t get_##type##n##item (struct device *, struct device_attribute *attr, char *); \
154static ssize_t get_##type##n##item (struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155{ \
156 struct gl520_data *data = gl520_update_device(dev); \
157 return get_##type##item(data, buf, (n)); \
158}
159
160#define sysfs_w(type, n, item, reg) \
161static ssize_t set_##type##item (struct i2c_client *, struct gl520_data *, const char *, size_t, int, int); \
Yani Ioannou30f74292005-05-17 06:41:35 -0400162static ssize_t set_##type##n##item (struct device *, struct device_attribute *attr, const char *, size_t); \
163static ssize_t set_##type##n##item (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164{ \
165 struct i2c_client *client = to_i2c_client(dev); \
166 struct gl520_data *data = i2c_get_clientdata(client); \
167 return set_##type##item(client, data, buf, count, (n), reg); \
168}
169
170#define sysfs_rw_n(type, n, item, reg) \
171sysfs_r(type, n, item, reg) \
172sysfs_w(type, n, item, reg) \
173static DEVICE_ATTR(type##n##item, S_IRUGO | S_IWUSR, get_##type##n##item, set_##type##n##item);
174
175#define sysfs_ro_n(type, n, item, reg) \
176sysfs_r(type, n, item, reg) \
177static DEVICE_ATTR(type##n##item, S_IRUGO, get_##type##n##item, NULL);
178
179#define sysfs_rw(type, item, reg) \
180sysfs_r(type, 0, item, reg) \
181sysfs_w(type, 0, item, reg) \
182static DEVICE_ATTR(type##item, S_IRUGO | S_IWUSR, get_##type##0##item, set_##type##0##item);
183
184#define sysfs_ro(type, item, reg) \
185sysfs_r(type, 0, item, reg) \
186static DEVICE_ATTR(type##item, S_IRUGO, get_##type##0##item, NULL);
187
188
189#define sysfs_vid(n) \
190sysfs_ro_n(cpu, n, _vid, GL520_REG_VID_INPUT)
191
192#define device_create_file_vid(client, n) \
193device_create_file(&client->dev, &dev_attr_cpu##n##_vid)
194
195#define sysfs_in(n) \
196sysfs_ro_n(in, n, _input, GL520_REG_IN##n##INPUT) \
197sysfs_rw_n(in, n, _min, GL520_REG_IN##n##_MIN) \
198sysfs_rw_n(in, n, _max, GL520_REG_IN##n##_MAX) \
199
200#define device_create_file_in(client, n) \
201({device_create_file(&client->dev, &dev_attr_in##n##_input); \
202device_create_file(&client->dev, &dev_attr_in##n##_min); \
203device_create_file(&client->dev, &dev_attr_in##n##_max);})
204
205#define sysfs_fan(n) \
206sysfs_ro_n(fan, n, _input, GL520_REG_FAN_INPUT) \
207sysfs_rw_n(fan, n, _min, GL520_REG_FAN_MIN) \
208sysfs_rw_n(fan, n, _div, GL520_REG_FAN_DIV)
209
210#define device_create_file_fan(client, n) \
211({device_create_file(&client->dev, &dev_attr_fan##n##_input); \
212device_create_file(&client->dev, &dev_attr_fan##n##_min); \
213device_create_file(&client->dev, &dev_attr_fan##n##_div);})
214
215#define sysfs_fan_off(n) \
216sysfs_rw_n(fan, n, _off, GL520_REG_FAN_OFF) \
217
218#define device_create_file_fan_off(client, n) \
219device_create_file(&client->dev, &dev_attr_fan##n##_off)
220
221#define sysfs_temp(n) \
222sysfs_ro_n(temp, n, _input, GL520_REG_TEMP##n##_INPUT) \
223sysfs_rw_n(temp, n, _max, GL520_REG_TEMP##n##_MAX) \
224sysfs_rw_n(temp, n, _max_hyst, GL520_REG_TEMP##n##_MAX_HYST)
225
226#define device_create_file_temp(client, n) \
227({device_create_file(&client->dev, &dev_attr_temp##n##_input); \
228device_create_file(&client->dev, &dev_attr_temp##n##_max); \
229device_create_file(&client->dev, &dev_attr_temp##n##_max_hyst);})
230
231#define sysfs_alarms() \
232sysfs_ro(alarms, , GL520_REG_ALARMS) \
233sysfs_rw(beep_enable, , GL520_REG_BEEP_ENABLE) \
234sysfs_rw(beep_mask, , GL520_REG_BEEP_MASK)
235
236#define device_create_file_alarms(client) \
237({device_create_file(&client->dev, &dev_attr_alarms); \
238device_create_file(&client->dev, &dev_attr_beep_enable); \
239device_create_file(&client->dev, &dev_attr_beep_mask);})
240
241
242sysfs_vid(0)
243
244sysfs_in(0)
245sysfs_in(1)
246sysfs_in(2)
247sysfs_in(3)
248sysfs_in(4)
249
250sysfs_fan(1)
251sysfs_fan(2)
252sysfs_fan_off(1)
253
254sysfs_temp(1)
255sysfs_temp(2)
256
257sysfs_alarms()
258
259
260static ssize_t get_cpu_vid(struct gl520_data *data, char *buf, int n)
261{
262 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
263}
264
265#define VDD_FROM_REG(val) (((val)*95+2)/4)
266#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
267
268#define IN_FROM_REG(val) ((val)*19)
269#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
270
271static ssize_t get_in_input(struct gl520_data *data, char *buf, int n)
272{
273 u8 r = data->in_input[n];
274
275 if (n == 0)
276 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
277 else
278 return sprintf(buf, "%d\n", IN_FROM_REG(r));
279}
280
281static ssize_t get_in_min(struct gl520_data *data, char *buf, int n)
282{
283 u8 r = data->in_min[n];
284
285 if (n == 0)
286 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
287 else
288 return sprintf(buf, "%d\n", IN_FROM_REG(r));
289}
290
291static ssize_t get_in_max(struct gl520_data *data, char *buf, int n)
292{
293 u8 r = data->in_max[n];
294
295 if (n == 0)
296 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
297 else
298 return sprintf(buf, "%d\n", IN_FROM_REG(r));
299}
300
301static ssize_t set_in_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
302{
303 long v = simple_strtol(buf, NULL, 10);
304 u8 r;
305
306 down(&data->update_lock);
307
308 if (n == 0)
309 r = VDD_TO_REG(v);
310 else
311 r = IN_TO_REG(v);
312
313 data->in_min[n] = r;
314
315 if (n < 4)
316 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r);
317 else
318 gl520_write_value(client, reg, r);
319
320 up(&data->update_lock);
321 return count;
322}
323
324static ssize_t set_in_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
325{
326 long v = simple_strtol(buf, NULL, 10);
327 u8 r;
328
329 if (n == 0)
330 r = VDD_TO_REG(v);
331 else
332 r = IN_TO_REG(v);
333
334 down(&data->update_lock);
335
336 data->in_max[n] = r;
337
338 if (n < 4)
339 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8));
340 else
341 gl520_write_value(client, reg, r);
342
343 up(&data->update_lock);
344 return count;
345}
346
347#define DIV_FROM_REG(val) (1 << (val))
348#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
349#define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255));
350
351static ssize_t get_fan_input(struct gl520_data *data, char *buf, int n)
352{
353 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n - 1], data->fan_div[n - 1]));
354}
355
356static ssize_t get_fan_min(struct gl520_data *data, char *buf, int n)
357{
358 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n - 1], data->fan_div[n - 1]));
359}
360
361static ssize_t get_fan_div(struct gl520_data *data, char *buf, int n)
362{
363 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n - 1]));
364}
365
366static ssize_t get_fan_off(struct gl520_data *data, char *buf, int n)
367{
368 return sprintf(buf, "%d\n", data->fan_off);
369}
370
371static ssize_t set_fan_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
372{
373 unsigned long v = simple_strtoul(buf, NULL, 10);
374 u8 r;
375
376 down(&data->update_lock);
377 r = FAN_TO_REG(v, data->fan_div[n - 1]);
378 data->fan_min[n - 1] = r;
379
380 if (n == 1)
381 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8));
382 else
383 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r);
384
385 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
386 if (data->fan_min[n - 1] == 0)
387 data->alarm_mask &= (n == 1) ? ~0x20 : ~0x40;
388 else
389 data->alarm_mask |= (n == 1) ? 0x20 : 0x40;
390 data->beep_mask &= data->alarm_mask;
391 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
392
393 up(&data->update_lock);
394 return count;
395}
396
397static ssize_t set_fan_div(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
398{
399 unsigned long v = simple_strtoul(buf, NULL, 10);
400 u8 r;
401
402 switch (v) {
403 case 1: r = 0; break;
404 case 2: r = 1; break;
405 case 4: r = 2; break;
406 case 8: r = 3; break;
407 default:
408 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
409 return -EINVAL;
410 }
411
412 down(&data->update_lock);
413 data->fan_div[n - 1] = r;
414
415 if (n == 1)
416 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xc0) | (r << 6));
417 else
418 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x30) | (r << 4));
419
420 up(&data->update_lock);
421 return count;
422}
423
424static ssize_t set_fan_off(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
425{
426 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
427
428 down(&data->update_lock);
429 data->fan_off = r;
430 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x0c) | (r << 2));
431 up(&data->update_lock);
432 return count;
433}
434
435#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
436#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
437
438static ssize_t get_temp_input(struct gl520_data *data, char *buf, int n)
439{
440 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n - 1]));
441}
442
443static ssize_t get_temp_max(struct gl520_data *data, char *buf, int n)
444{
445 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n - 1]));
446}
447
448static ssize_t get_temp_max_hyst(struct gl520_data *data, char *buf, int n)
449{
450 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n - 1]));
451}
452
453static ssize_t set_temp_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
454{
455 long v = simple_strtol(buf, NULL, 10);
456
457 down(&data->update_lock);
458 data->temp_max[n - 1] = TEMP_TO_REG(v);;
459 gl520_write_value(client, reg, data->temp_max[n - 1]);
460 up(&data->update_lock);
461 return count;
462}
463
464static ssize_t set_temp_max_hyst(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
465{
466 long v = simple_strtol(buf, NULL, 10);
467
468 down(&data->update_lock);
469 data->temp_max_hyst[n - 1] = TEMP_TO_REG(v);
470 gl520_write_value(client, reg, data->temp_max_hyst[n - 1]);
471 up(&data->update_lock);
472 return count;
473}
474
475static ssize_t get_alarms(struct gl520_data *data, char *buf, int n)
476{
477 return sprintf(buf, "%d\n", data->alarms);
478}
479
480static ssize_t get_beep_enable(struct gl520_data *data, char *buf, int n)
481{
482 return sprintf(buf, "%d\n", data->beep_enable);
483}
484
485static ssize_t get_beep_mask(struct gl520_data *data, char *buf, int n)
486{
487 return sprintf(buf, "%d\n", data->beep_mask);
488}
489
490static ssize_t set_beep_enable(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
491{
492 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
493
494 down(&data->update_lock);
495 data->beep_enable = !r;
496 gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x04) | (r << 2));
497 up(&data->update_lock);
498 return count;
499}
500
501static ssize_t set_beep_mask(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg)
502{
503 u8 r = simple_strtoul(buf, NULL, 10);
504
505 down(&data->update_lock);
506 r &= data->alarm_mask;
507 data->beep_mask = r;
508 gl520_write_value(client, reg, r);
509 up(&data->update_lock);
510 return count;
511}
512
513
514/*
515 * Real code
516 */
517
518static int gl520_attach_adapter(struct i2c_adapter *adapter)
519{
520 if (!(adapter->class & I2C_CLASS_HWMON))
521 return 0;
Jean Delvare2ed2dc32005-07-31 21:42:02 +0200522 return i2c_probe(adapter, &addr_data, gl520_detect);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523}
524
525static int gl520_detect(struct i2c_adapter *adapter, int address, int kind)
526{
527 struct i2c_client *new_client;
528 struct gl520_data *data;
529 int err = 0;
530
531 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
532 I2C_FUNC_SMBUS_WORD_DATA))
533 goto exit;
534
535 /* OK. For now, we presume we have a valid client. We now create the
536 client structure, even though we cannot fill it completely yet.
537 But it allows us to access gl520_{read,write}_value. */
538
Deepak Saxenaba9c2e82005-10-17 23:08:32 +0200539 if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 err = -ENOMEM;
541 goto exit;
542 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
544 new_client = &data->client;
545 i2c_set_clientdata(new_client, data);
546 new_client->addr = address;
547 new_client->adapter = adapter;
548 new_client->driver = &gl520_driver;
549 new_client->flags = 0;
550
551 /* Determine the chip type. */
552 if (kind < 0) {
553 if ((gl520_read_value(new_client, GL520_REG_CHIP_ID) != 0x20) ||
554 ((gl520_read_value(new_client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
555 ((gl520_read_value(new_client, GL520_REG_CONF) & 0x80) != 0x00)) {
556 dev_dbg(&new_client->dev, "Unknown chip type, skipping\n");
557 goto exit_free;
558 }
559 }
560
561 /* Fill in the remaining client fields */
562 strlcpy(new_client->name, "gl520sm", I2C_NAME_SIZE);
563 data->valid = 0;
564 init_MUTEX(&data->update_lock);
565
566 /* Tell the I2C layer a new client has arrived */
567 if ((err = i2c_attach_client(new_client)))
568 goto exit_free;
569
570 /* Initialize the GL520SM chip */
571 gl520_init_client(new_client);
572
573 /* Register sysfs hooks */
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400574 data->class_dev = hwmon_device_register(&new_client->dev);
575 if (IS_ERR(data->class_dev)) {
576 err = PTR_ERR(data->class_dev);
577 goto exit_detach;
578 }
579
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 device_create_file_vid(new_client, 0);
581
582 device_create_file_in(new_client, 0);
583 device_create_file_in(new_client, 1);
584 device_create_file_in(new_client, 2);
585 device_create_file_in(new_client, 3);
586 if (!data->two_temps)
587 device_create_file_in(new_client, 4);
588
589 device_create_file_fan(new_client, 1);
590 device_create_file_fan(new_client, 2);
591 device_create_file_fan_off(new_client, 1);
592
593 device_create_file_temp(new_client, 1);
594 if (data->two_temps)
595 device_create_file_temp(new_client, 2);
596
597 device_create_file_alarms(new_client);
598
599 return 0;
600
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400601exit_detach:
602 i2c_detach_client(new_client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603exit_free:
604 kfree(data);
605exit:
606 return err;
607}
608
609
610/* Called when we have found a new GL520SM. */
611static void gl520_init_client(struct i2c_client *client)
612{
613 struct gl520_data *data = i2c_get_clientdata(client);
614 u8 oldconf, conf;
615
616 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
617
618 data->alarm_mask = 0xff;
Jean Delvare303760b2005-07-31 21:52:01 +0200619 data->vrm = vid_which_vrm();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
621 if (extra_sensor_type == 1)
622 conf &= ~0x10;
623 else if (extra_sensor_type == 2)
624 conf |= 0x10;
625 data->two_temps = !(conf & 0x10);
626
627 /* If IRQ# is disabled, we can safely force comparator mode */
628 if (!(conf & 0x20))
629 conf &= 0xf7;
630
631 /* Enable monitoring if needed */
632 conf |= 0x40;
633
634 if (conf != oldconf)
635 gl520_write_value(client, GL520_REG_CONF, conf);
636
637 gl520_update_device(&(client->dev));
638
639 if (data->fan_min[0] == 0)
640 data->alarm_mask &= ~0x20;
641 if (data->fan_min[1] == 0)
642 data->alarm_mask &= ~0x40;
643
644 data->beep_mask &= data->alarm_mask;
645 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
646}
647
648static int gl520_detach_client(struct i2c_client *client)
649{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400650 struct gl520_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 int err;
652
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400653 hwmon_device_unregister(data->class_dev);
654
Jean Delvare7bef5592005-07-27 22:14:49 +0200655 if ((err = i2c_detach_client(client)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400658 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 return 0;
660}
661
662
663/* Registers 0x07 to 0x0c are word-sized, others are byte-sized
664 GL520 uses a high-byte first convention */
665static int gl520_read_value(struct i2c_client *client, u8 reg)
666{
667 if ((reg >= 0x07) && (reg <= 0x0c))
668 return swab16(i2c_smbus_read_word_data(client, reg));
669 else
670 return i2c_smbus_read_byte_data(client, reg);
671}
672
673static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
674{
675 if ((reg >= 0x07) && (reg <= 0x0c))
676 return i2c_smbus_write_word_data(client, reg, swab16(value));
677 else
678 return i2c_smbus_write_byte_data(client, reg, value);
679}
680
681
682static struct gl520_data *gl520_update_device(struct device *dev)
683{
684 struct i2c_client *client = to_i2c_client(dev);
685 struct gl520_data *data = i2c_get_clientdata(client);
686 int val;
687
688 down(&data->update_lock);
689
Jean Delvare0cacdf22005-07-29 12:15:12 -0700690 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691
692 dev_dbg(&client->dev, "Starting gl520sm update\n");
693
694 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
695 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
696 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
697
698 val = gl520_read_value(client, GL520_REG_IN0_LIMIT);
699 data->in_min[0] = val & 0xff;
700 data->in_max[0] = (val >> 8) & 0xff;
701 val = gl520_read_value(client, GL520_REG_IN1_LIMIT);
702 data->in_min[1] = val & 0xff;
703 data->in_max[1] = (val >> 8) & 0xff;
704 val = gl520_read_value(client, GL520_REG_IN2_LIMIT);
705 data->in_min[2] = val & 0xff;
706 data->in_max[2] = (val >> 8) & 0xff;
707 val = gl520_read_value(client, GL520_REG_IN3_LIMIT);
708 data->in_min[3] = val & 0xff;
709 data->in_max[3] = (val >> 8) & 0xff;
710
711 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
712 data->fan_input[0] = (val >> 8) & 0xff;
713 data->fan_input[1] = val & 0xff;
714
715 val = gl520_read_value(client, GL520_REG_FAN_MIN);
716 data->fan_min[0] = (val >> 8) & 0xff;
717 data->fan_min[1] = val & 0xff;
718
719 data->temp_input[0] = gl520_read_value(client, GL520_REG_TEMP1_INPUT);
720 data->temp_max[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX);
721 data->temp_max_hyst[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX_HYST);
722
723 val = gl520_read_value(client, GL520_REG_FAN_DIV);
724 data->fan_div[0] = (val >> 6) & 0x03;
725 data->fan_div[1] = (val >> 4) & 0x03;
726 data->fan_off = (val >> 2) & 0x01;
727
728 data->alarms &= data->alarm_mask;
729
730 val = gl520_read_value(client, GL520_REG_CONF);
731 data->beep_enable = !((val >> 2) & 1);
732
733 data->in_input[0] = gl520_read_value(client, GL520_REG_IN0_INPUT);
734 data->in_input[1] = gl520_read_value(client, GL520_REG_IN1_INPUT);
735 data->in_input[2] = gl520_read_value(client, GL520_REG_IN2_INPUT);
736 data->in_input[3] = gl520_read_value(client, GL520_REG_IN3_INPUT);
737
738 /* Temp1 and Vin4 are the same input */
739 if (data->two_temps) {
740 data->temp_input[1] = gl520_read_value(client, GL520_REG_TEMP2_INPUT);
741 data->temp_max[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX);
742 data->temp_max_hyst[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX_HYST);
743 } else {
744 data->in_input[4] = gl520_read_value(client, GL520_REG_IN4_INPUT);
745 data->in_min[4] = gl520_read_value(client, GL520_REG_IN4_MIN);
746 data->in_max[4] = gl520_read_value(client, GL520_REG_IN4_MAX);
747 }
748
749 data->last_updated = jiffies;
750 data->valid = 1;
751 }
752
753 up(&data->update_lock);
754
755 return data;
756}
757
758
759static int __init sensors_gl520sm_init(void)
760{
761 return i2c_add_driver(&gl520_driver);
762}
763
764static void __exit sensors_gl520sm_exit(void)
765{
766 i2c_del_driver(&gl520_driver);
767}
768
769
770MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
771 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
772 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
773MODULE_DESCRIPTION("GL520SM driver");
774MODULE_LICENSE("GPL");
775
776module_init(sensors_gl520sm_init);
777module_exit(sensors_gl520sm_exit);