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24#include <linux/module.h>
25#include <linux/init.h>
26#include <linux/slab.h>
27#include <linux/jiffies.h>
28#include <linux/i2c.h>
29#include <linux/hwmon.h>
30#include <linux/hwmon-sysfs.h>
31#include <linux/hwmon-vid.h>
32#include <linux/err.h>
33#include <linux/mutex.h>
34#include <linux/sysfs.h>
35
36
37static unsigned short extra_sensor_type;
38module_param(extra_sensor_type, ushort, 0);
39MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
40
41
42static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
43
44
45
46
47
48
49
50
51#define GL520_REG_CHIP_ID 0x00
52#define GL520_REG_REVISION 0x01
53#define GL520_REG_CONF 0x03
54#define GL520_REG_MASK 0x11
55
56#define GL520_REG_VID_INPUT 0x02
57
58static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
59static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
60static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
61static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
62
63static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
64static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
65static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
66
67#define GL520_REG_FAN_INPUT 0x07
68#define GL520_REG_FAN_MIN 0x08
69#define GL520_REG_FAN_DIV 0x0f
70#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
71
72#define GL520_REG_ALARMS 0x12
73#define GL520_REG_BEEP_MASK 0x10
74#define GL520_REG_BEEP_ENABLE GL520_REG_CONF
75
76
77struct gl520_data {
78 struct i2c_client *client;
79 const struct attribute_group *groups[3];
80 struct mutex update_lock;
81 char valid;
82 unsigned long last_updated;
83
84 u8 vid;
85 u8 vrm;
86 u8 in_input[5];
87 u8 in_min[5];
88 u8 in_max[5];
89 u8 fan_input[2];
90 u8 fan_min[2];
91 u8 fan_div[2];
92 u8 fan_off;
93 u8 temp_input[2];
94 u8 temp_max[2];
95 u8 temp_max_hyst[2];
96 u8 alarms;
97 u8 beep_enable;
98 u8 beep_mask;
99 u8 alarm_mask;
100 u8 two_temps;
101};
102
103
104
105
106
107static int gl520_read_value(struct i2c_client *client, u8 reg)
108{
109 if ((reg >= 0x07) && (reg <= 0x0c))
110 return i2c_smbus_read_word_swapped(client, reg);
111 else
112 return i2c_smbus_read_byte_data(client, reg);
113}
114
115static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
116{
117 if ((reg >= 0x07) && (reg <= 0x0c))
118 return i2c_smbus_write_word_swapped(client, reg, value);
119 else
120 return i2c_smbus_write_byte_data(client, reg, value);
121}
122
123static struct gl520_data *gl520_update_device(struct device *dev)
124{
125 struct gl520_data *data = dev_get_drvdata(dev);
126 struct i2c_client *client = data->client;
127 int val, i;
128
129 mutex_lock(&data->update_lock);
130
131 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
132
133 dev_dbg(&client->dev, "Starting gl520sm update\n");
134
135 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
136 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
137 data->vid = gl520_read_value(client,
138 GL520_REG_VID_INPUT) & 0x1f;
139
140 for (i = 0; i < 4; i++) {
141 data->in_input[i] = gl520_read_value(client,
142 GL520_REG_IN_INPUT[i]);
143 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
144 data->in_min[i] = val & 0xff;
145 data->in_max[i] = (val >> 8) & 0xff;
146 }
147
148 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
149 data->fan_input[0] = (val >> 8) & 0xff;
150 data->fan_input[1] = val & 0xff;
151
152 val = gl520_read_value(client, GL520_REG_FAN_MIN);
153 data->fan_min[0] = (val >> 8) & 0xff;
154 data->fan_min[1] = val & 0xff;
155
156 data->temp_input[0] = gl520_read_value(client,
157 GL520_REG_TEMP_INPUT[0]);
158 data->temp_max[0] = gl520_read_value(client,
159 GL520_REG_TEMP_MAX[0]);
160 data->temp_max_hyst[0] = gl520_read_value(client,
161 GL520_REG_TEMP_MAX_HYST[0]);
162
163 val = gl520_read_value(client, GL520_REG_FAN_DIV);
164 data->fan_div[0] = (val >> 6) & 0x03;
165 data->fan_div[1] = (val >> 4) & 0x03;
166 data->fan_off = (val >> 2) & 0x01;
167
168 data->alarms &= data->alarm_mask;
169
170 val = gl520_read_value(client, GL520_REG_CONF);
171 data->beep_enable = !((val >> 2) & 1);
172
173
174 if (data->two_temps) {
175 data->temp_input[1] = gl520_read_value(client,
176 GL520_REG_TEMP_INPUT[1]);
177 data->temp_max[1] = gl520_read_value(client,
178 GL520_REG_TEMP_MAX[1]);
179 data->temp_max_hyst[1] = gl520_read_value(client,
180 GL520_REG_TEMP_MAX_HYST[1]);
181 } else {
182 data->in_input[4] = gl520_read_value(client,
183 GL520_REG_IN_INPUT[4]);
184 data->in_min[4] = gl520_read_value(client,
185 GL520_REG_IN_MIN[4]);
186 data->in_max[4] = gl520_read_value(client,
187 GL520_REG_IN_MAX[4]);
188 }
189
190 data->last_updated = jiffies;
191 data->valid = 1;
192 }
193
194 mutex_unlock(&data->update_lock);
195
196 return data;
197}
198
199
200
201
202
203static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
204 char *buf)
205{
206 struct gl520_data *data = gl520_update_device(dev);
207 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
208}
209static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
210
211#define VDD_FROM_REG(val) (((val) * 95 + 2) / 4)
212#define VDD_TO_REG(val) clamp_val((((val) * 4 + 47) / 95), 0, 255)
213
214#define IN_FROM_REG(val) ((val) * 19)
215#define IN_TO_REG(val) clamp_val((((val) + 9) / 19), 0, 255)
216
217static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
218 char *buf)
219{
220 int n = to_sensor_dev_attr(attr)->index;
221 struct gl520_data *data = gl520_update_device(dev);
222 u8 r = data->in_input[n];
223
224 if (n == 0)
225 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
226 else
227 return sprintf(buf, "%d\n", IN_FROM_REG(r));
228}
229
230static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
231 char *buf)
232{
233 int n = to_sensor_dev_attr(attr)->index;
234 struct gl520_data *data = gl520_update_device(dev);
235 u8 r = data->in_min[n];
236
237 if (n == 0)
238 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
239 else
240 return sprintf(buf, "%d\n", IN_FROM_REG(r));
241}
242
243static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
244 char *buf)
245{
246 int n = to_sensor_dev_attr(attr)->index;
247 struct gl520_data *data = gl520_update_device(dev);
248 u8 r = data->in_max[n];
249
250 if (n == 0)
251 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
252 else
253 return sprintf(buf, "%d\n", IN_FROM_REG(r));
254}
255
256static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
257 const char *buf, size_t count)
258{
259 struct gl520_data *data = dev_get_drvdata(dev);
260 struct i2c_client *client = data->client;
261 int n = to_sensor_dev_attr(attr)->index;
262 u8 r;
263 long v;
264 int err;
265
266 err = kstrtol(buf, 10, &v);
267 if (err)
268 return err;
269
270 mutex_lock(&data->update_lock);
271
272 if (n == 0)
273 r = VDD_TO_REG(v);
274 else
275 r = IN_TO_REG(v);
276
277 data->in_min[n] = r;
278
279 if (n < 4)
280 gl520_write_value(client, GL520_REG_IN_MIN[n],
281 (gl520_read_value(client, GL520_REG_IN_MIN[n])
282 & ~0xff) | r);
283 else
284 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
285
286 mutex_unlock(&data->update_lock);
287 return count;
288}
289
290static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
291 const char *buf, size_t count)
292{
293 struct gl520_data *data = dev_get_drvdata(dev);
294 struct i2c_client *client = data->client;
295 int n = to_sensor_dev_attr(attr)->index;
296 u8 r;
297 long v;
298 int err;
299
300 err = kstrtol(buf, 10, &v);
301 if (err)
302 return err;
303
304 if (n == 0)
305 r = VDD_TO_REG(v);
306 else
307 r = IN_TO_REG(v);
308
309 mutex_lock(&data->update_lock);
310
311 data->in_max[n] = r;
312
313 if (n < 4)
314 gl520_write_value(client, GL520_REG_IN_MAX[n],
315 (gl520_read_value(client, GL520_REG_IN_MAX[n])
316 & ~0xff00) | (r << 8));
317 else
318 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
319
320 mutex_unlock(&data->update_lock);
321 return count;
322}
323
324static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
325static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
326static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
327static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
328static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
329static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
330 get_in_min, set_in_min, 0);
331static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
332 get_in_min, set_in_min, 1);
333static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
334 get_in_min, set_in_min, 2);
335static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
336 get_in_min, set_in_min, 3);
337static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
338 get_in_min, set_in_min, 4);
339static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
340 get_in_max, set_in_max, 0);
341static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
342 get_in_max, set_in_max, 1);
343static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
344 get_in_max, set_in_max, 2);
345static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
346 get_in_max, set_in_max, 3);
347static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
348 get_in_max, set_in_max, 4);
349
350#define DIV_FROM_REG(val) (1 << (val))
351#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div))))
352#define FAN_TO_REG(val, div) ((val) <= 0 ? 0 : \
353 clamp_val((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255))
354
355static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
356 char *buf)
357{
358 int n = to_sensor_dev_attr(attr)->index;
359 struct gl520_data *data = gl520_update_device(dev);
360
361 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n],
362 data->fan_div[n]));
363}
364
365static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr,
366 char *buf)
367{
368 int n = to_sensor_dev_attr(attr)->index;
369 struct gl520_data *data = gl520_update_device(dev);
370
371 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n],
372 data->fan_div[n]));
373}
374
375static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr,
376 char *buf)
377{
378 int n = to_sensor_dev_attr(attr)->index;
379 struct gl520_data *data = gl520_update_device(dev);
380
381 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n]));
382}
383
384static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
385 char *buf)
386{
387 struct gl520_data *data = gl520_update_device(dev);
388 return sprintf(buf, "%d\n", data->fan_off);
389}
390
391static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
392 const char *buf, size_t count)
393{
394 struct gl520_data *data = dev_get_drvdata(dev);
395 struct i2c_client *client = data->client;
396 int n = to_sensor_dev_attr(attr)->index;
397 u8 r;
398 unsigned long v;
399 int err;
400
401 err = kstrtoul(buf, 10, &v);
402 if (err)
403 return err;
404
405 mutex_lock(&data->update_lock);
406 r = FAN_TO_REG(v, data->fan_div[n]);
407 data->fan_min[n] = r;
408
409 if (n == 0)
410 gl520_write_value(client, GL520_REG_FAN_MIN,
411 (gl520_read_value(client, GL520_REG_FAN_MIN)
412 & ~0xff00) | (r << 8));
413 else
414 gl520_write_value(client, GL520_REG_FAN_MIN,
415 (gl520_read_value(client, GL520_REG_FAN_MIN)
416 & ~0xff) | r);
417
418 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
419 if (data->fan_min[n] == 0)
420 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
421 else
422 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
423 data->beep_mask &= data->alarm_mask;
424 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
425
426 mutex_unlock(&data->update_lock);
427 return count;
428}
429
430static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
431 const char *buf, size_t count)
432{
433 struct gl520_data *data = dev_get_drvdata(dev);
434 struct i2c_client *client = data->client;
435 int n = to_sensor_dev_attr(attr)->index;
436 u8 r;
437 unsigned long v;
438 int err;
439
440 err = kstrtoul(buf, 10, &v);
441 if (err)
442 return err;
443
444 switch (v) {
445 case 1:
446 r = 0;
447 break;
448 case 2:
449 r = 1;
450 break;
451 case 4:
452 r = 2;
453 break;
454 case 8:
455 r = 3;
456 break;
457 default:
458 dev_err(&client->dev,
459 "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
460 return -EINVAL;
461 }
462
463 mutex_lock(&data->update_lock);
464 data->fan_div[n] = r;
465
466 if (n == 0)
467 gl520_write_value(client, GL520_REG_FAN_DIV,
468 (gl520_read_value(client, GL520_REG_FAN_DIV)
469 & ~0xc0) | (r << 6));
470 else
471 gl520_write_value(client, GL520_REG_FAN_DIV,
472 (gl520_read_value(client, GL520_REG_FAN_DIV)
473 & ~0x30) | (r << 4));
474
475 mutex_unlock(&data->update_lock);
476 return count;
477}
478
479static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
480 const char *buf, size_t count)
481{
482 struct gl520_data *data = dev_get_drvdata(dev);
483 struct i2c_client *client = data->client;
484 u8 r;
485 unsigned long v;
486 int err;
487
488 err = kstrtoul(buf, 10, &v);
489 if (err)
490 return err;
491
492 r = (v ? 1 : 0);
493
494 mutex_lock(&data->update_lock);
495 data->fan_off = r;
496 gl520_write_value(client, GL520_REG_FAN_OFF,
497 (gl520_read_value(client, GL520_REG_FAN_OFF)
498 & ~0x0c) | (r << 2));
499 mutex_unlock(&data->update_lock);
500 return count;
501}
502
503static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
504static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
505static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
506 get_fan_min, set_fan_min, 0);
507static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
508 get_fan_min, set_fan_min, 1);
509static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
510 get_fan_div, set_fan_div, 0);
511static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
512 get_fan_div, set_fan_div, 1);
513static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
514 get_fan_off, set_fan_off);
515
516#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
517#define TEMP_TO_REG(val) clamp_val(((((val) < 0 ? \
518 (val) - 500 : (val) + 500) / 1000) + 130), 0, 255)
519
520static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
521 char *buf)
522{
523 int n = to_sensor_dev_attr(attr)->index;
524 struct gl520_data *data = gl520_update_device(dev);
525
526 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
527}
528
529static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
530 char *buf)
531{
532 int n = to_sensor_dev_attr(attr)->index;
533 struct gl520_data *data = gl520_update_device(dev);
534
535 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
536}
537
538static ssize_t get_temp_max_hyst(struct device *dev,
539 struct device_attribute *attr, char *buf)
540{
541 int n = to_sensor_dev_attr(attr)->index;
542 struct gl520_data *data = gl520_update_device(dev);
543
544 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
545}
546
547static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
548 const char *buf, size_t count)
549{
550 struct gl520_data *data = dev_get_drvdata(dev);
551 struct i2c_client *client = data->client;
552 int n = to_sensor_dev_attr(attr)->index;
553 long v;
554 int err;
555
556 err = kstrtol(buf, 10, &v);
557 if (err)
558 return err;
559
560 mutex_lock(&data->update_lock);
561 data->temp_max[n] = TEMP_TO_REG(v);
562 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
563 mutex_unlock(&data->update_lock);
564 return count;
565}
566
567static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
568 *attr, const char *buf, size_t count)
569{
570 struct gl520_data *data = dev_get_drvdata(dev);
571 struct i2c_client *client = data->client;
572 int n = to_sensor_dev_attr(attr)->index;
573 long v;
574 int err;
575
576 err = kstrtol(buf, 10, &v);
577 if (err)
578 return err;
579
580 mutex_lock(&data->update_lock);
581 data->temp_max_hyst[n] = TEMP_TO_REG(v);
582 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
583 data->temp_max_hyst[n]);
584 mutex_unlock(&data->update_lock);
585 return count;
586}
587
588static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
589static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
590static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
591 get_temp_max, set_temp_max, 0);
592static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
593 get_temp_max, set_temp_max, 1);
594static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
595 get_temp_max_hyst, set_temp_max_hyst, 0);
596static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
597 get_temp_max_hyst, set_temp_max_hyst, 1);
598
599static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
600 char *buf)
601{
602 struct gl520_data *data = gl520_update_device(dev);
603 return sprintf(buf, "%d\n", data->alarms);
604}
605
606static ssize_t get_beep_enable(struct device *dev, struct device_attribute
607 *attr, char *buf)
608{
609 struct gl520_data *data = gl520_update_device(dev);
610 return sprintf(buf, "%d\n", data->beep_enable);
611}
612
613static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
614 char *buf)
615{
616 struct gl520_data *data = gl520_update_device(dev);
617 return sprintf(buf, "%d\n", data->beep_mask);
618}
619
620static ssize_t set_beep_enable(struct device *dev, struct device_attribute
621 *attr, const char *buf, size_t count)
622{
623 struct gl520_data *data = dev_get_drvdata(dev);
624 struct i2c_client *client = data->client;
625 u8 r;
626 unsigned long v;
627 int err;
628
629 err = kstrtoul(buf, 10, &v);
630 if (err)
631 return err;
632
633 r = (v ? 0 : 1);
634
635 mutex_lock(&data->update_lock);
636 data->beep_enable = !r;
637 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
638 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
639 & ~0x04) | (r << 2));
640 mutex_unlock(&data->update_lock);
641 return count;
642}
643
644static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
645 const char *buf, size_t count)
646{
647 struct gl520_data *data = dev_get_drvdata(dev);
648 struct i2c_client *client = data->client;
649 unsigned long r;
650 int err;
651
652 err = kstrtoul(buf, 10, &r);
653 if (err)
654 return err;
655
656 mutex_lock(&data->update_lock);
657 r &= data->alarm_mask;
658 data->beep_mask = r;
659 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
660 mutex_unlock(&data->update_lock);
661 return count;
662}
663
664static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
665static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
666 get_beep_enable, set_beep_enable);
667static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
668 get_beep_mask, set_beep_mask);
669
670static ssize_t get_alarm(struct device *dev, struct device_attribute *attr,
671 char *buf)
672{
673 int bit_nr = to_sensor_dev_attr(attr)->index;
674 struct gl520_data *data = gl520_update_device(dev);
675
676 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
677}
678
679static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
680static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
681static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
682static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
683static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
684static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
685static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
686static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
687static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
688
689static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
690 char *buf)
691{
692 int bitnr = to_sensor_dev_attr(attr)->index;
693 struct gl520_data *data = gl520_update_device(dev);
694
695 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
696}
697
698static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
699 const char *buf, size_t count)
700{
701 struct gl520_data *data = dev_get_drvdata(dev);
702 struct i2c_client *client = data->client;
703 int bitnr = to_sensor_dev_attr(attr)->index;
704 unsigned long bit;
705
706 int err;
707
708 err = kstrtoul(buf, 10, &bit);
709 if (err)
710 return err;
711 if (bit & ~1)
712 return -EINVAL;
713
714 mutex_lock(&data->update_lock);
715 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
716 if (bit)
717 data->beep_mask |= (1 << bitnr);
718 else
719 data->beep_mask &= ~(1 << bitnr);
720 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
721 mutex_unlock(&data->update_lock);
722 return count;
723}
724
725static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
726static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
727static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
728static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
729static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
730static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
731static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
732static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
733static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
734
735static struct attribute *gl520_attributes[] = {
736 &dev_attr_cpu0_vid.attr,
737
738 &sensor_dev_attr_in0_input.dev_attr.attr,
739 &sensor_dev_attr_in0_min.dev_attr.attr,
740 &sensor_dev_attr_in0_max.dev_attr.attr,
741 &sensor_dev_attr_in0_alarm.dev_attr.attr,
742 &sensor_dev_attr_in0_beep.dev_attr.attr,
743 &sensor_dev_attr_in1_input.dev_attr.attr,
744 &sensor_dev_attr_in1_min.dev_attr.attr,
745 &sensor_dev_attr_in1_max.dev_attr.attr,
746 &sensor_dev_attr_in1_alarm.dev_attr.attr,
747 &sensor_dev_attr_in1_beep.dev_attr.attr,
748 &sensor_dev_attr_in2_input.dev_attr.attr,
749 &sensor_dev_attr_in2_min.dev_attr.attr,
750 &sensor_dev_attr_in2_max.dev_attr.attr,
751 &sensor_dev_attr_in2_alarm.dev_attr.attr,
752 &sensor_dev_attr_in2_beep.dev_attr.attr,
753 &sensor_dev_attr_in3_input.dev_attr.attr,
754 &sensor_dev_attr_in3_min.dev_attr.attr,
755 &sensor_dev_attr_in3_max.dev_attr.attr,
756 &sensor_dev_attr_in3_alarm.dev_attr.attr,
757 &sensor_dev_attr_in3_beep.dev_attr.attr,
758
759 &sensor_dev_attr_fan1_input.dev_attr.attr,
760 &sensor_dev_attr_fan1_min.dev_attr.attr,
761 &sensor_dev_attr_fan1_div.dev_attr.attr,
762 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
763 &sensor_dev_attr_fan1_beep.dev_attr.attr,
764 &dev_attr_fan1_off.attr,
765 &sensor_dev_attr_fan2_input.dev_attr.attr,
766 &sensor_dev_attr_fan2_min.dev_attr.attr,
767 &sensor_dev_attr_fan2_div.dev_attr.attr,
768 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
769 &sensor_dev_attr_fan2_beep.dev_attr.attr,
770
771 &sensor_dev_attr_temp1_input.dev_attr.attr,
772 &sensor_dev_attr_temp1_max.dev_attr.attr,
773 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
774 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
775 &sensor_dev_attr_temp1_beep.dev_attr.attr,
776
777 &dev_attr_alarms.attr,
778 &dev_attr_beep_enable.attr,
779 &dev_attr_beep_mask.attr,
780 NULL
781};
782
783static const struct attribute_group gl520_group = {
784 .attrs = gl520_attributes,
785};
786
787static struct attribute *gl520_attributes_in4[] = {
788 &sensor_dev_attr_in4_input.dev_attr.attr,
789 &sensor_dev_attr_in4_min.dev_attr.attr,
790 &sensor_dev_attr_in4_max.dev_attr.attr,
791 &sensor_dev_attr_in4_alarm.dev_attr.attr,
792 &sensor_dev_attr_in4_beep.dev_attr.attr,
793 NULL
794};
795
796static struct attribute *gl520_attributes_temp2[] = {
797 &sensor_dev_attr_temp2_input.dev_attr.attr,
798 &sensor_dev_attr_temp2_max.dev_attr.attr,
799 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
800 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
801 &sensor_dev_attr_temp2_beep.dev_attr.attr,
802 NULL
803};
804
805static const struct attribute_group gl520_group_in4 = {
806 .attrs = gl520_attributes_in4,
807};
808
809static const struct attribute_group gl520_group_temp2 = {
810 .attrs = gl520_attributes_temp2,
811};
812
813
814
815
816
817
818
819static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
820{
821 struct i2c_adapter *adapter = client->adapter;
822
823 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
824 I2C_FUNC_SMBUS_WORD_DATA))
825 return -ENODEV;
826
827
828 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
829 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
830 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
831 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
832 return -ENODEV;
833 }
834
835 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
836
837 return 0;
838}
839
840
841static void gl520_init_client(struct i2c_client *client)
842{
843 struct gl520_data *data = i2c_get_clientdata(client);
844 u8 oldconf, conf;
845
846 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
847
848 data->alarm_mask = 0xff;
849 data->vrm = vid_which_vrm();
850
851 if (extra_sensor_type == 1)
852 conf &= ~0x10;
853 else if (extra_sensor_type == 2)
854 conf |= 0x10;
855 data->two_temps = !(conf & 0x10);
856
857
858 if (!(conf & 0x20))
859 conf &= 0xf7;
860
861
862 conf |= 0x40;
863
864 if (conf != oldconf)
865 gl520_write_value(client, GL520_REG_CONF, conf);
866
867 gl520_update_device(&(client->dev));
868
869 if (data->fan_min[0] == 0)
870 data->alarm_mask &= ~0x20;
871 if (data->fan_min[1] == 0)
872 data->alarm_mask &= ~0x40;
873
874 data->beep_mask &= data->alarm_mask;
875 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
876}
877
878static int gl520_probe(struct i2c_client *client,
879 const struct i2c_device_id *id)
880{
881 struct device *dev = &client->dev;
882 struct device *hwmon_dev;
883 struct gl520_data *data;
884
885 data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL);
886 if (!data)
887 return -ENOMEM;
888
889 i2c_set_clientdata(client, data);
890 mutex_init(&data->update_lock);
891 data->client = client;
892
893
894 gl520_init_client(client);
895
896
897 data->groups[0] = &gl520_group;
898
899 if (data->two_temps)
900 data->groups[1] = &gl520_group_temp2;
901 else
902 data->groups[1] = &gl520_group_in4;
903
904 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
905 data, data->groups);
906 return PTR_ERR_OR_ZERO(hwmon_dev);
907}
908
909static const struct i2c_device_id gl520_id[] = {
910 { "gl520sm", 0 },
911 { }
912};
913MODULE_DEVICE_TABLE(i2c, gl520_id);
914
915static struct i2c_driver gl520_driver = {
916 .class = I2C_CLASS_HWMON,
917 .driver = {
918 .name = "gl520sm",
919 },
920 .probe = gl520_probe,
921 .id_table = gl520_id,
922 .detect = gl520_detect,
923 .address_list = normal_i2c,
924};
925
926module_i2c_driver(gl520_driver);
927
928MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
929 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
930 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
931MODULE_DESCRIPTION("GL520SM driver");
932MODULE_LICENSE("GPL");
933
