drm/i915: Unlock mutex on i915_gem_fault() error path
[linux/fpc-iii.git] / drivers / hwmon / gl520sm.c
blob19616f2242b02ce9b0b51445854d47a2c815b542
1 /*
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>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/slab.h>
27 #include <linux/jiffies.h>
28 #include <linux/i2c.h>
29 #include <linux/hwmon.h>
30 #include <linux/hwmon-sysfs.h>
31 #include <linux/hwmon-vid.h>
32 #include <linux/err.h>
33 #include <linux/mutex.h>
34 #include <linux/sysfs.h>
36 /* Type of the extra sensor */
37 static unsigned short extra_sensor_type;
38 module_param(extra_sensor_type, ushort, 0);
39 MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
41 /* Addresses to scan */
42 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
44 /* Insmod parameters */
45 I2C_CLIENT_INSMOD_1(gl520sm);
47 /* Many GL520 constants specified below
48 One of the inputs can be configured as either temp or voltage.
49 That's why _TEMP2 and _IN4 access the same register
52 /* The GL520 registers */
53 #define GL520_REG_CHIP_ID 0x00
54 #define GL520_REG_REVISION 0x01
55 #define GL520_REG_CONF 0x03
56 #define GL520_REG_MASK 0x11
58 #define GL520_REG_VID_INPUT 0x02
60 static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
61 static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
62 static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
63 static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
65 static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
66 static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
67 static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
69 #define GL520_REG_FAN_INPUT 0x07
70 #define GL520_REG_FAN_MIN 0x08
71 #define GL520_REG_FAN_DIV 0x0f
72 #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
74 #define GL520_REG_ALARMS 0x12
75 #define GL520_REG_BEEP_MASK 0x10
76 #define GL520_REG_BEEP_ENABLE GL520_REG_CONF
79 * Function declarations
82 static int gl520_probe(struct i2c_client *client,
83 const struct i2c_device_id *id);
84 static int gl520_detect(struct i2c_client *client, int kind,
85 struct i2c_board_info *info);
86 static void gl520_init_client(struct i2c_client *client);
87 static int gl520_remove(struct i2c_client *client);
88 static int gl520_read_value(struct i2c_client *client, u8 reg);
89 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
90 static struct gl520_data *gl520_update_device(struct device *dev);
92 /* Driver data */
93 static const struct i2c_device_id gl520_id[] = {
94 { "gl520sm", gl520sm },
95 { }
97 MODULE_DEVICE_TABLE(i2c, gl520_id);
99 static struct i2c_driver gl520_driver = {
100 .class = I2C_CLASS_HWMON,
101 .driver = {
102 .name = "gl520sm",
104 .probe = gl520_probe,
105 .remove = gl520_remove,
106 .id_table = gl520_id,
107 .detect = gl520_detect,
108 .address_data = &addr_data,
111 /* Client data */
112 struct gl520_data {
113 struct device *hwmon_dev;
114 struct mutex update_lock;
115 char valid; /* zero until the following fields are valid */
116 unsigned long last_updated; /* in jiffies */
118 u8 vid;
119 u8 vrm;
120 u8 in_input[5]; /* [0] = VVD */
121 u8 in_min[5]; /* [0] = VDD */
122 u8 in_max[5]; /* [0] = VDD */
123 u8 fan_input[2];
124 u8 fan_min[2];
125 u8 fan_div[2];
126 u8 fan_off;
127 u8 temp_input[2];
128 u8 temp_max[2];
129 u8 temp_max_hyst[2];
130 u8 alarms;
131 u8 beep_enable;
132 u8 beep_mask;
133 u8 alarm_mask;
134 u8 two_temps;
138 * Sysfs stuff
141 static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
142 char *buf)
144 struct gl520_data *data = gl520_update_device(dev);
145 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
147 static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
149 #define VDD_FROM_REG(val) (((val)*95+2)/4)
150 #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
152 #define IN_FROM_REG(val) ((val)*19)
153 #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
155 static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
156 char *buf)
158 int n = to_sensor_dev_attr(attr)->index;
159 struct gl520_data *data = gl520_update_device(dev);
160 u8 r = data->in_input[n];
162 if (n == 0)
163 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
164 else
165 return sprintf(buf, "%d\n", IN_FROM_REG(r));
168 static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
169 char *buf)
171 int n = to_sensor_dev_attr(attr)->index;
172 struct gl520_data *data = gl520_update_device(dev);
173 u8 r = data->in_min[n];
175 if (n == 0)
176 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
177 else
178 return sprintf(buf, "%d\n", IN_FROM_REG(r));
181 static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
182 char *buf)
184 int n = to_sensor_dev_attr(attr)->index;
185 struct gl520_data *data = gl520_update_device(dev);
186 u8 r = data->in_max[n];
188 if (n == 0)
189 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
190 else
191 return sprintf(buf, "%d\n", IN_FROM_REG(r));
194 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
195 const char *buf, size_t count)
197 struct i2c_client *client = to_i2c_client(dev);
198 struct gl520_data *data = i2c_get_clientdata(client);
199 int n = to_sensor_dev_attr(attr)->index;
200 long v = simple_strtol(buf, NULL, 10);
201 u8 r;
203 mutex_lock(&data->update_lock);
205 if (n == 0)
206 r = VDD_TO_REG(v);
207 else
208 r = IN_TO_REG(v);
210 data->in_min[n] = r;
212 if (n < 4)
213 gl520_write_value(client, GL520_REG_IN_MIN[n],
214 (gl520_read_value(client, GL520_REG_IN_MIN[n])
215 & ~0xff) | r);
216 else
217 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
219 mutex_unlock(&data->update_lock);
220 return count;
223 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
224 const char *buf, size_t count)
226 struct i2c_client *client = to_i2c_client(dev);
227 struct gl520_data *data = i2c_get_clientdata(client);
228 int n = to_sensor_dev_attr(attr)->index;
229 long v = simple_strtol(buf, NULL, 10);
230 u8 r;
232 if (n == 0)
233 r = VDD_TO_REG(v);
234 else
235 r = IN_TO_REG(v);
237 mutex_lock(&data->update_lock);
239 data->in_max[n] = r;
241 if (n < 4)
242 gl520_write_value(client, GL520_REG_IN_MAX[n],
243 (gl520_read_value(client, GL520_REG_IN_MAX[n])
244 & ~0xff00) | (r << 8));
245 else
246 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
248 mutex_unlock(&data->update_lock);
249 return count;
252 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
253 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
254 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
255 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
256 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
257 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
258 get_in_min, set_in_min, 0);
259 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
260 get_in_min, set_in_min, 1);
261 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
262 get_in_min, set_in_min, 2);
263 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
264 get_in_min, set_in_min, 3);
265 static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
266 get_in_min, set_in_min, 4);
267 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
268 get_in_max, set_in_max, 0);
269 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
270 get_in_max, set_in_max, 1);
271 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
272 get_in_max, set_in_max, 2);
273 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
274 get_in_max, set_in_max, 3);
275 static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
276 get_in_max, set_in_max, 4);
278 #define DIV_FROM_REG(val) (1 << (val))
279 #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
280 #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255));
282 static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
283 char *buf)
285 int n = to_sensor_dev_attr(attr)->index;
286 struct gl520_data *data = gl520_update_device(dev);
288 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n],
289 data->fan_div[n]));
292 static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr,
293 char *buf)
295 int n = to_sensor_dev_attr(attr)->index;
296 struct gl520_data *data = gl520_update_device(dev);
298 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n],
299 data->fan_div[n]));
302 static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr,
303 char *buf)
305 int n = to_sensor_dev_attr(attr)->index;
306 struct gl520_data *data = gl520_update_device(dev);
308 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n]));
311 static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
312 char *buf)
314 struct gl520_data *data = gl520_update_device(dev);
315 return sprintf(buf, "%d\n", data->fan_off);
318 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
319 const char *buf, size_t count)
321 struct i2c_client *client = to_i2c_client(dev);
322 struct gl520_data *data = i2c_get_clientdata(client);
323 int n = to_sensor_dev_attr(attr)->index;
324 unsigned long v = simple_strtoul(buf, NULL, 10);
325 u8 r;
327 mutex_lock(&data->update_lock);
328 r = FAN_TO_REG(v, data->fan_div[n]);
329 data->fan_min[n] = r;
331 if (n == 0)
332 gl520_write_value(client, GL520_REG_FAN_MIN,
333 (gl520_read_value(client, GL520_REG_FAN_MIN)
334 & ~0xff00) | (r << 8));
335 else
336 gl520_write_value(client, GL520_REG_FAN_MIN,
337 (gl520_read_value(client, GL520_REG_FAN_MIN)
338 & ~0xff) | r);
340 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
341 if (data->fan_min[n] == 0)
342 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
343 else
344 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
345 data->beep_mask &= data->alarm_mask;
346 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
348 mutex_unlock(&data->update_lock);
349 return count;
352 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
353 const char *buf, size_t count)
355 struct i2c_client *client = to_i2c_client(dev);
356 struct gl520_data *data = i2c_get_clientdata(client);
357 int n = to_sensor_dev_attr(attr)->index;
358 unsigned long v = simple_strtoul(buf, NULL, 10);
359 u8 r;
361 switch (v) {
362 case 1: r = 0; break;
363 case 2: r = 1; break;
364 case 4: r = 2; break;
365 case 8: r = 3; break;
366 default:
367 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
368 return -EINVAL;
371 mutex_lock(&data->update_lock);
372 data->fan_div[n] = r;
374 if (n == 0)
375 gl520_write_value(client, GL520_REG_FAN_DIV,
376 (gl520_read_value(client, GL520_REG_FAN_DIV)
377 & ~0xc0) | (r << 6));
378 else
379 gl520_write_value(client, GL520_REG_FAN_DIV,
380 (gl520_read_value(client, GL520_REG_FAN_DIV)
381 & ~0x30) | (r << 4));
383 mutex_unlock(&data->update_lock);
384 return count;
387 static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
388 const char *buf, size_t count)
390 struct i2c_client *client = to_i2c_client(dev);
391 struct gl520_data *data = i2c_get_clientdata(client);
392 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
394 mutex_lock(&data->update_lock);
395 data->fan_off = r;
396 gl520_write_value(client, GL520_REG_FAN_OFF,
397 (gl520_read_value(client, GL520_REG_FAN_OFF)
398 & ~0x0c) | (r << 2));
399 mutex_unlock(&data->update_lock);
400 return count;
403 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
404 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
405 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
406 get_fan_min, set_fan_min, 0);
407 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
408 get_fan_min, set_fan_min, 1);
409 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
410 get_fan_div, set_fan_div, 0);
411 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
412 get_fan_div, set_fan_div, 1);
413 static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
414 get_fan_off, set_fan_off);
416 #define TEMP_FROM_REG(val) (((val) - 130) * 1000)
417 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
419 static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
420 char *buf)
422 int n = to_sensor_dev_attr(attr)->index;
423 struct gl520_data *data = gl520_update_device(dev);
425 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
428 static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
429 char *buf)
431 int n = to_sensor_dev_attr(attr)->index;
432 struct gl520_data *data = gl520_update_device(dev);
434 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
437 static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute
438 *attr, char *buf)
440 int n = to_sensor_dev_attr(attr)->index;
441 struct gl520_data *data = gl520_update_device(dev);
443 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
446 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
447 const char *buf, size_t count)
449 struct i2c_client *client = to_i2c_client(dev);
450 struct gl520_data *data = i2c_get_clientdata(client);
451 int n = to_sensor_dev_attr(attr)->index;
452 long v = simple_strtol(buf, NULL, 10);
454 mutex_lock(&data->update_lock);
455 data->temp_max[n] = TEMP_TO_REG(v);
456 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
457 mutex_unlock(&data->update_lock);
458 return count;
461 static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
462 *attr, const char *buf, size_t count)
464 struct i2c_client *client = to_i2c_client(dev);
465 struct gl520_data *data = i2c_get_clientdata(client);
466 int n = to_sensor_dev_attr(attr)->index;
467 long v = simple_strtol(buf, NULL, 10);
469 mutex_lock(&data->update_lock);
470 data->temp_max_hyst[n] = TEMP_TO_REG(v);
471 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
472 data->temp_max_hyst[n]);
473 mutex_unlock(&data->update_lock);
474 return count;
477 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
478 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
479 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
480 get_temp_max, set_temp_max, 0);
481 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
482 get_temp_max, set_temp_max, 1);
483 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
484 get_temp_max_hyst, set_temp_max_hyst, 0);
485 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
486 get_temp_max_hyst, set_temp_max_hyst, 1);
488 static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
489 char *buf)
491 struct gl520_data *data = gl520_update_device(dev);
492 return sprintf(buf, "%d\n", data->alarms);
495 static ssize_t get_beep_enable(struct device *dev, struct device_attribute
496 *attr, char *buf)
498 struct gl520_data *data = gl520_update_device(dev);
499 return sprintf(buf, "%d\n", data->beep_enable);
502 static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
503 char *buf)
505 struct gl520_data *data = gl520_update_device(dev);
506 return sprintf(buf, "%d\n", data->beep_mask);
509 static ssize_t set_beep_enable(struct device *dev, struct device_attribute
510 *attr, const char *buf, size_t count)
512 struct i2c_client *client = to_i2c_client(dev);
513 struct gl520_data *data = i2c_get_clientdata(client);
514 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
516 mutex_lock(&data->update_lock);
517 data->beep_enable = !r;
518 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
519 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
520 & ~0x04) | (r << 2));
521 mutex_unlock(&data->update_lock);
522 return count;
525 static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
526 const char *buf, size_t count)
528 struct i2c_client *client = to_i2c_client(dev);
529 struct gl520_data *data = i2c_get_clientdata(client);
530 u8 r = simple_strtoul(buf, NULL, 10);
532 mutex_lock(&data->update_lock);
533 r &= data->alarm_mask;
534 data->beep_mask = r;
535 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
536 mutex_unlock(&data->update_lock);
537 return count;
540 static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
541 static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
542 get_beep_enable, set_beep_enable);
543 static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
544 get_beep_mask, set_beep_mask);
546 static ssize_t get_alarm(struct device *dev, struct device_attribute *attr,
547 char *buf)
549 int bit_nr = to_sensor_dev_attr(attr)->index;
550 struct gl520_data *data = gl520_update_device(dev);
552 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
555 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
556 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
557 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
558 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
559 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
560 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
561 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
562 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
563 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
565 static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
566 char *buf)
568 int bitnr = to_sensor_dev_attr(attr)->index;
569 struct gl520_data *data = gl520_update_device(dev);
571 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
574 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
575 const char *buf, size_t count)
577 struct i2c_client *client = to_i2c_client(dev);
578 struct gl520_data *data = i2c_get_clientdata(client);
579 int bitnr = to_sensor_dev_attr(attr)->index;
580 unsigned long bit;
582 bit = simple_strtoul(buf, NULL, 10);
583 if (bit & ~1)
584 return -EINVAL;
586 mutex_lock(&data->update_lock);
587 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
588 if (bit)
589 data->beep_mask |= (1 << bitnr);
590 else
591 data->beep_mask &= ~(1 << bitnr);
592 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
593 mutex_unlock(&data->update_lock);
594 return count;
597 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
598 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
599 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
600 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
601 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
602 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
603 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
604 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
605 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
607 static struct attribute *gl520_attributes[] = {
608 &dev_attr_cpu0_vid.attr,
610 &sensor_dev_attr_in0_input.dev_attr.attr,
611 &sensor_dev_attr_in0_min.dev_attr.attr,
612 &sensor_dev_attr_in0_max.dev_attr.attr,
613 &sensor_dev_attr_in0_alarm.dev_attr.attr,
614 &sensor_dev_attr_in0_beep.dev_attr.attr,
615 &sensor_dev_attr_in1_input.dev_attr.attr,
616 &sensor_dev_attr_in1_min.dev_attr.attr,
617 &sensor_dev_attr_in1_max.dev_attr.attr,
618 &sensor_dev_attr_in1_alarm.dev_attr.attr,
619 &sensor_dev_attr_in1_beep.dev_attr.attr,
620 &sensor_dev_attr_in2_input.dev_attr.attr,
621 &sensor_dev_attr_in2_min.dev_attr.attr,
622 &sensor_dev_attr_in2_max.dev_attr.attr,
623 &sensor_dev_attr_in2_alarm.dev_attr.attr,
624 &sensor_dev_attr_in2_beep.dev_attr.attr,
625 &sensor_dev_attr_in3_input.dev_attr.attr,
626 &sensor_dev_attr_in3_min.dev_attr.attr,
627 &sensor_dev_attr_in3_max.dev_attr.attr,
628 &sensor_dev_attr_in3_alarm.dev_attr.attr,
629 &sensor_dev_attr_in3_beep.dev_attr.attr,
631 &sensor_dev_attr_fan1_input.dev_attr.attr,
632 &sensor_dev_attr_fan1_min.dev_attr.attr,
633 &sensor_dev_attr_fan1_div.dev_attr.attr,
634 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
635 &sensor_dev_attr_fan1_beep.dev_attr.attr,
636 &dev_attr_fan1_off.attr,
637 &sensor_dev_attr_fan2_input.dev_attr.attr,
638 &sensor_dev_attr_fan2_min.dev_attr.attr,
639 &sensor_dev_attr_fan2_div.dev_attr.attr,
640 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
641 &sensor_dev_attr_fan2_beep.dev_attr.attr,
643 &sensor_dev_attr_temp1_input.dev_attr.attr,
644 &sensor_dev_attr_temp1_max.dev_attr.attr,
645 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
646 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
647 &sensor_dev_attr_temp1_beep.dev_attr.attr,
649 &dev_attr_alarms.attr,
650 &dev_attr_beep_enable.attr,
651 &dev_attr_beep_mask.attr,
652 NULL
655 static const struct attribute_group gl520_group = {
656 .attrs = gl520_attributes,
659 static struct attribute *gl520_attributes_opt[] = {
660 &sensor_dev_attr_in4_input.dev_attr.attr,
661 &sensor_dev_attr_in4_min.dev_attr.attr,
662 &sensor_dev_attr_in4_max.dev_attr.attr,
663 &sensor_dev_attr_in4_alarm.dev_attr.attr,
664 &sensor_dev_attr_in4_beep.dev_attr.attr,
666 &sensor_dev_attr_temp2_input.dev_attr.attr,
667 &sensor_dev_attr_temp2_max.dev_attr.attr,
668 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
669 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
670 &sensor_dev_attr_temp2_beep.dev_attr.attr,
671 NULL
674 static const struct attribute_group gl520_group_opt = {
675 .attrs = gl520_attributes_opt,
680 * Real code
683 /* Return 0 if detection is successful, -ENODEV otherwise */
684 static int gl520_detect(struct i2c_client *client, int kind,
685 struct i2c_board_info *info)
687 struct i2c_adapter *adapter = client->adapter;
689 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
690 I2C_FUNC_SMBUS_WORD_DATA))
691 return -ENODEV;
693 /* Determine the chip type. */
694 if (kind < 0) {
695 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
696 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
697 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
698 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
699 return -ENODEV;
703 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
705 return 0;
708 static int gl520_probe(struct i2c_client *client,
709 const struct i2c_device_id *id)
711 struct gl520_data *data;
712 int err;
714 data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL);
715 if (!data) {
716 err = -ENOMEM;
717 goto exit;
720 i2c_set_clientdata(client, data);
721 mutex_init(&data->update_lock);
723 /* Initialize the GL520SM chip */
724 gl520_init_client(client);
726 /* Register sysfs hooks */
727 if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group)))
728 goto exit_free;
730 if (data->two_temps) {
731 if ((err = device_create_file(&client->dev,
732 &sensor_dev_attr_temp2_input.dev_attr))
733 || (err = device_create_file(&client->dev,
734 &sensor_dev_attr_temp2_max.dev_attr))
735 || (err = device_create_file(&client->dev,
736 &sensor_dev_attr_temp2_max_hyst.dev_attr))
737 || (err = device_create_file(&client->dev,
738 &sensor_dev_attr_temp2_alarm.dev_attr))
739 || (err = device_create_file(&client->dev,
740 &sensor_dev_attr_temp2_beep.dev_attr)))
741 goto exit_remove_files;
742 } else {
743 if ((err = device_create_file(&client->dev,
744 &sensor_dev_attr_in4_input.dev_attr))
745 || (err = device_create_file(&client->dev,
746 &sensor_dev_attr_in4_min.dev_attr))
747 || (err = device_create_file(&client->dev,
748 &sensor_dev_attr_in4_max.dev_attr))
749 || (err = device_create_file(&client->dev,
750 &sensor_dev_attr_in4_alarm.dev_attr))
751 || (err = device_create_file(&client->dev,
752 &sensor_dev_attr_in4_beep.dev_attr)))
753 goto exit_remove_files;
757 data->hwmon_dev = hwmon_device_register(&client->dev);
758 if (IS_ERR(data->hwmon_dev)) {
759 err = PTR_ERR(data->hwmon_dev);
760 goto exit_remove_files;
763 return 0;
765 exit_remove_files:
766 sysfs_remove_group(&client->dev.kobj, &gl520_group);
767 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
768 exit_free:
769 kfree(data);
770 exit:
771 return err;
775 /* Called when we have found a new GL520SM. */
776 static void gl520_init_client(struct i2c_client *client)
778 struct gl520_data *data = i2c_get_clientdata(client);
779 u8 oldconf, conf;
781 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
783 data->alarm_mask = 0xff;
784 data->vrm = vid_which_vrm();
786 if (extra_sensor_type == 1)
787 conf &= ~0x10;
788 else if (extra_sensor_type == 2)
789 conf |= 0x10;
790 data->two_temps = !(conf & 0x10);
792 /* If IRQ# is disabled, we can safely force comparator mode */
793 if (!(conf & 0x20))
794 conf &= 0xf7;
796 /* Enable monitoring if needed */
797 conf |= 0x40;
799 if (conf != oldconf)
800 gl520_write_value(client, GL520_REG_CONF, conf);
802 gl520_update_device(&(client->dev));
804 if (data->fan_min[0] == 0)
805 data->alarm_mask &= ~0x20;
806 if (data->fan_min[1] == 0)
807 data->alarm_mask &= ~0x40;
809 data->beep_mask &= data->alarm_mask;
810 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
813 static int gl520_remove(struct i2c_client *client)
815 struct gl520_data *data = i2c_get_clientdata(client);
817 hwmon_device_unregister(data->hwmon_dev);
818 sysfs_remove_group(&client->dev.kobj, &gl520_group);
819 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
821 kfree(data);
822 return 0;
826 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized
827 GL520 uses a high-byte first convention */
828 static int gl520_read_value(struct i2c_client *client, u8 reg)
830 if ((reg >= 0x07) && (reg <= 0x0c))
831 return swab16(i2c_smbus_read_word_data(client, reg));
832 else
833 return i2c_smbus_read_byte_data(client, reg);
836 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
838 if ((reg >= 0x07) && (reg <= 0x0c))
839 return i2c_smbus_write_word_data(client, reg, swab16(value));
840 else
841 return i2c_smbus_write_byte_data(client, reg, value);
845 static struct gl520_data *gl520_update_device(struct device *dev)
847 struct i2c_client *client = to_i2c_client(dev);
848 struct gl520_data *data = i2c_get_clientdata(client);
849 int val, i;
851 mutex_lock(&data->update_lock);
853 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
855 dev_dbg(&client->dev, "Starting gl520sm update\n");
857 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
858 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
859 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
861 for (i = 0; i < 4; i++) {
862 data->in_input[i] = gl520_read_value(client,
863 GL520_REG_IN_INPUT[i]);
864 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
865 data->in_min[i] = val & 0xff;
866 data->in_max[i] = (val >> 8) & 0xff;
869 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
870 data->fan_input[0] = (val >> 8) & 0xff;
871 data->fan_input[1] = val & 0xff;
873 val = gl520_read_value(client, GL520_REG_FAN_MIN);
874 data->fan_min[0] = (val >> 8) & 0xff;
875 data->fan_min[1] = val & 0xff;
877 data->temp_input[0] = gl520_read_value(client,
878 GL520_REG_TEMP_INPUT[0]);
879 data->temp_max[0] = gl520_read_value(client,
880 GL520_REG_TEMP_MAX[0]);
881 data->temp_max_hyst[0] = gl520_read_value(client,
882 GL520_REG_TEMP_MAX_HYST[0]);
884 val = gl520_read_value(client, GL520_REG_FAN_DIV);
885 data->fan_div[0] = (val >> 6) & 0x03;
886 data->fan_div[1] = (val >> 4) & 0x03;
887 data->fan_off = (val >> 2) & 0x01;
889 data->alarms &= data->alarm_mask;
891 val = gl520_read_value(client, GL520_REG_CONF);
892 data->beep_enable = !((val >> 2) & 1);
894 /* Temp1 and Vin4 are the same input */
895 if (data->two_temps) {
896 data->temp_input[1] = gl520_read_value(client,
897 GL520_REG_TEMP_INPUT[1]);
898 data->temp_max[1] = gl520_read_value(client,
899 GL520_REG_TEMP_MAX[1]);
900 data->temp_max_hyst[1] = gl520_read_value(client,
901 GL520_REG_TEMP_MAX_HYST[1]);
902 } else {
903 data->in_input[4] = gl520_read_value(client,
904 GL520_REG_IN_INPUT[4]);
905 data->in_min[4] = gl520_read_value(client,
906 GL520_REG_IN_MIN[4]);
907 data->in_max[4] = gl520_read_value(client,
908 GL520_REG_IN_MAX[4]);
911 data->last_updated = jiffies;
912 data->valid = 1;
915 mutex_unlock(&data->update_lock);
917 return data;
921 static int __init sensors_gl520sm_init(void)
923 return i2c_add_driver(&gl520_driver);
926 static void __exit sensors_gl520sm_exit(void)
928 i2c_del_driver(&gl520_driver);
932 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
933 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
934 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
935 MODULE_DESCRIPTION("GL520SM driver");
936 MODULE_LICENSE("GPL");
938 module_init(sensors_gl520sm_init);
939 module_exit(sensors_gl520sm_exit);