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[net-next-2.6.git] / drivers / hwmon / gl520sm.c
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1da177e4
LT		 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>,
96de0e25 5 Kyösti Mälkki <kmalkki@cc.hut.fi>
1da177e4
LT		 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>
0cacdf29 27#include <linux/jiffies.h>
1da177e4 28#include <linux/i2c.h>
943b0830 29#include <linux/hwmon.h>
86d47f12 30#include <linux/hwmon-sysfs.h>
303760b4 31#include <linux/hwmon-vid.h>
943b0830 32#include <linux/err.h>
9a61bf63 33#include <linux/mutex.h>
87808be4 34#include <linux/sysfs.h>
1da177e4
LT		 35
36/* Type of the extra sensor */
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/* Addresses to scan */
25e9c86d 42static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
1da177e4 43
f28dc2f7 44/* Many GL520 constants specified below
1da177e4 45One of the inputs can be configured as either temp or voltage.
f28dc2f7 46That's why _TEMP2 and _IN4 access the same register
1da177e4
LT		 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
8b4b0ab4
JD		 57static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
58static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
59static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
60static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
61
62static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
63static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
64static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
1da177e4
LT		 65
66#define GL520_REG_FAN_INPUT 0x07
67#define GL520_REG_FAN_MIN 0x08
68#define GL520_REG_FAN_DIV 0x0f
69#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
70
71#define GL520_REG_ALARMS 0x12
72#define GL520_REG_BEEP_MASK 0x10
73#define GL520_REG_BEEP_ENABLE GL520_REG_CONF
74
75/*
76 * Function declarations
77 */
78
a23a9fe1
JD		 79static int gl520_probe(struct i2c_client *client,
80 const struct i2c_device_id *id);
310ec792 81static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info);
1da177e4 82static void gl520_init_client(struct i2c_client *client);
a23a9fe1 83static int gl520_remove(struct i2c_client *client);
1da177e4
LT		 84static int gl520_read_value(struct i2c_client *client, u8 reg);
85static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
86static struct gl520_data *gl520_update_device(struct device *dev);
87
88/* Driver data */
a23a9fe1 89static const struct i2c_device_id gl520_id[] = {
1f86df49 90 { "gl520sm", 0 },
a23a9fe1
JD		 91 { }
92};
93MODULE_DEVICE_TABLE(i2c, gl520_id);
94
1da177e4 95static struct i2c_driver gl520_driver = {
a23a9fe1 96 .class = I2C_CLASS_HWMON,
cdaf7934 97 .driver = {
cdaf7934
LR		 98 .name = "gl520sm",
99 },
a23a9fe1
JD		 100 .probe = gl520_probe,
101 .remove = gl520_remove,
102 .id_table = gl520_id,
103 .detect = gl520_detect,
c3813d6a 104 .address_list = normal_i2c,
1da177e4
LT		 105};
106
107/* Client data */
108struct gl520_data {
1beeffe4 109 struct device *hwmon_dev;
9a61bf63 110 struct mutex update_lock;
1da177e4
LT		 111 char valid; /* zero until the following fields are valid */
112 unsigned long last_updated; /* in jiffies */
113
114 u8 vid;
115 u8 vrm;
116 u8 in_input[5]; /* [0] = VVD */
117 u8 in_min[5]; /* [0] = VDD */
118 u8 in_max[5]; /* [0] = VDD */
119 u8 fan_input[2];
120 u8 fan_min[2];
121 u8 fan_div[2];
122 u8 fan_off;
123 u8 temp_input[2];
124 u8 temp_max[2];
125 u8 temp_max_hyst[2];
126 u8 alarms;
127 u8 beep_enable;
128 u8 beep_mask;
129 u8 alarm_mask;
130 u8 two_temps;
131};
132
133/*
134 * Sysfs stuff
135 */
136
86d47f12
JD		 137static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
138 char *buf)
1da177e4 139{
86d47f12 140 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 141 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
142}
86d47f12 143static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
1da177e4
LT		 144
145#define VDD_FROM_REG(val) (((val)*95+2)/4)
146#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
147
148#define IN_FROM_REG(val) ((val)*19)
149#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
150
86d47f12
JD		 151static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
152 char *buf)
1da177e4 153{
86d47f12
JD		 154 int n = to_sensor_dev_attr(attr)->index;
155 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 156 u8 r = data->in_input[n];
157
158 if (n == 0)
159 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
160 else
161 return sprintf(buf, "%d\n", IN_FROM_REG(r));
162}
163
86d47f12
JD		 164static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
165 char *buf)
1da177e4 166{
86d47f12
JD		 167 int n = to_sensor_dev_attr(attr)->index;
168 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 169 u8 r = data->in_min[n];
170
171 if (n == 0)
172 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
173 else
174 return sprintf(buf, "%d\n", IN_FROM_REG(r));
175}
176
86d47f12
JD		 177static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
178 char *buf)
1da177e4 179{
86d47f12
JD		 180 int n = to_sensor_dev_attr(attr)->index;
181 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 182 u8 r = data->in_max[n];
183
184 if (n == 0)
185 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
186 else
187 return sprintf(buf, "%d\n", IN_FROM_REG(r));
188}
189
86d47f12
JD		 190static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
191 const char *buf, size_t count)
1da177e4 192{
86d47f12
JD		 193 struct i2c_client *client = to_i2c_client(dev);
194 struct gl520_data *data = i2c_get_clientdata(client);
195 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 196 long v = simple_strtol(buf, NULL, 10);
197 u8 r;
198
9a61bf63 199 mutex_lock(&data->update_lock);
1da177e4
LT		 200
201 if (n == 0)
202 r = VDD_TO_REG(v);
203 else
204 r = IN_TO_REG(v);
205
206 data->in_min[n] = r;
207
208 if (n < 4)
86d47f12
JD		 209 gl520_write_value(client, GL520_REG_IN_MIN[n],
210 (gl520_read_value(client, GL520_REG_IN_MIN[n])
211 & ~0xff) | r);
1da177e4 212 else
86d47f12 213 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
1da177e4 214
9a61bf63 215 mutex_unlock(&data->update_lock);
1da177e4
LT		 216 return count;
217}
218
86d47f12
JD		 219static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
220 const char *buf, size_t count)
1da177e4 221{
86d47f12
JD		 222 struct i2c_client *client = to_i2c_client(dev);
223 struct gl520_data *data = i2c_get_clientdata(client);
224 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 225 long v = simple_strtol(buf, NULL, 10);
226 u8 r;
227
228 if (n == 0)
229 r = VDD_TO_REG(v);
230 else
231 r = IN_TO_REG(v);
232
9a61bf63 233 mutex_lock(&data->update_lock);
1da177e4
LT		 234
235 data->in_max[n] = r;
236
237 if (n < 4)
86d47f12
JD		 238 gl520_write_value(client, GL520_REG_IN_MAX[n],
239 (gl520_read_value(client, GL520_REG_IN_MAX[n])
240 & ~0xff00) | (r << 8));
1da177e4 241 else
86d47f12 242 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
1da177e4 243
9a61bf63 244 mutex_unlock(&data->update_lock);
1da177e4
LT		 245 return count;
246}
247
86d47f12
JD		 248static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
249static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
250static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
251static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
252static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
253static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
254 get_in_min, set_in_min, 0);
255static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
256 get_in_min, set_in_min, 1);
257static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
258 get_in_min, set_in_min, 2);
259static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
260 get_in_min, set_in_min, 3);
261static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
262 get_in_min, set_in_min, 4);
263static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
264 get_in_max, set_in_max, 0);
265static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
266 get_in_max, set_in_max, 1);
267static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
268 get_in_max, set_in_max, 2);
269static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
270 get_in_max, set_in_max, 3);
271static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
272 get_in_max, set_in_max, 4);
273
1da177e4
LT		 274#define DIV_FROM_REG(val) (1 << (val))
275#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
276#define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255));
277
86d47f12
JD		 278static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
279 char *buf)
1da177e4 280{
86d47f12
JD		 281 int n = to_sensor_dev_attr(attr)->index;
282 struct gl520_data *data = gl520_update_device(dev);
283
284 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n],
285 data->fan_div[n]));
1da177e4
LT		 286}
287
86d47f12
JD		 288static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr,
289 char *buf)
1da177e4 290{
86d47f12
JD		 291 int n = to_sensor_dev_attr(attr)->index;
292 struct gl520_data *data = gl520_update_device(dev);
293
294 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n],
295 data->fan_div[n]));
1da177e4
LT		 296}
297
86d47f12
JD		 298static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr,
299 char *buf)
1da177e4 300{
86d47f12
JD		 301 int n = to_sensor_dev_attr(attr)->index;
302 struct gl520_data *data = gl520_update_device(dev);
303
304 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n]));
1da177e4
LT		 305}
306
86d47f12
JD		 307static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
308 char *buf)
1da177e4 309{
86d47f12 310 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 311 return sprintf(buf, "%d\n", data->fan_off);
312}
313
86d47f12
JD		 314static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
315 const char *buf, size_t count)
1da177e4 316{
86d47f12
JD		 317 struct i2c_client *client = to_i2c_client(dev);
318 struct gl520_data *data = i2c_get_clientdata(client);
319 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 320 unsigned long v = simple_strtoul(buf, NULL, 10);
321 u8 r;
322
9a61bf63 323 mutex_lock(&data->update_lock);
86d47f12
JD		 324 r = FAN_TO_REG(v, data->fan_div[n]);
325 data->fan_min[n] = r;
1da177e4 326
86d47f12
JD		 327 if (n == 0)
328 gl520_write_value(client, GL520_REG_FAN_MIN,
329 (gl520_read_value(client, GL520_REG_FAN_MIN)
330 & ~0xff00) | (r << 8));
1da177e4 331 else
86d47f12
JD		 332 gl520_write_value(client, GL520_REG_FAN_MIN,
333 (gl520_read_value(client, GL520_REG_FAN_MIN)
334 & ~0xff) | r);
1da177e4
LT		 335
336 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
86d47f12
JD		 337 if (data->fan_min[n] == 0)
338 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
1da177e4 339 else
86d47f12 340 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
1da177e4
LT		 341 data->beep_mask &= data->alarm_mask;
342 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
343
9a61bf63 344 mutex_unlock(&data->update_lock);
1da177e4
LT		 345 return count;
346}
347
86d47f12
JD		 348static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
349 const char *buf, size_t count)
1da177e4 350{
86d47f12
JD		 351 struct i2c_client *client = to_i2c_client(dev);
352 struct gl520_data *data = i2c_get_clientdata(client);
353 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 354 unsigned long v = simple_strtoul(buf, NULL, 10);
355 u8 r;
356
357 switch (v) {
358 case 1: r = 0; break;
359 case 2: r = 1; break;
360 case 4: r = 2; break;
361 case 8: r = 3; break;
362 default:
363 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
364 return -EINVAL;
365 }
366
9a61bf63 367 mutex_lock(&data->update_lock);
86d47f12 368 data->fan_div[n] = r;
1da177e4 369
86d47f12
JD		 370 if (n == 0)
371 gl520_write_value(client, GL520_REG_FAN_DIV,
372 (gl520_read_value(client, GL520_REG_FAN_DIV)
373 & ~0xc0) | (r << 6));
1da177e4 374 else
86d47f12
JD		 375 gl520_write_value(client, GL520_REG_FAN_DIV,
376 (gl520_read_value(client, GL520_REG_FAN_DIV)
377 & ~0x30) | (r << 4));
1da177e4 378
9a61bf63 379 mutex_unlock(&data->update_lock);
1da177e4
LT		 380 return count;
381}
382
86d47f12
JD		 383static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
384 const char *buf, size_t count)
1da177e4 385{
86d47f12
JD		 386 struct i2c_client *client = to_i2c_client(dev);
387 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4
LT		 388 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
389
9a61bf63 390 mutex_lock(&data->update_lock);
1da177e4 391 data->fan_off = r;
86d47f12
JD		 392 gl520_write_value(client, GL520_REG_FAN_OFF,
393 (gl520_read_value(client, GL520_REG_FAN_OFF)
394 & ~0x0c) | (r << 2));
9a61bf63 395 mutex_unlock(&data->update_lock);
1da177e4
LT		 396 return count;
397}
398
86d47f12
JD		 399static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
400static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
401static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
402 get_fan_min, set_fan_min, 0);
403static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
404 get_fan_min, set_fan_min, 1);
405static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
406 get_fan_div, set_fan_div, 0);
407static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
408 get_fan_div, set_fan_div, 1);
409static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
410 get_fan_off, set_fan_off);
411
1da177e4
LT		 412#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
413#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
414
86d47f12
JD		 415static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
416 char *buf)
1da177e4 417{
86d47f12
JD		 418 int n = to_sensor_dev_attr(attr)->index;
419 struct gl520_data *data = gl520_update_device(dev);
420
421 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
1da177e4
LT		 422}
423
86d47f12
JD		 424static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
425 char *buf)
1da177e4 426{
86d47f12
JD		 427 int n = to_sensor_dev_attr(attr)->index;
428 struct gl520_data *data = gl520_update_device(dev);
429
430 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
1da177e4
LT		 431}
432
86d47f12
JD		 433static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute
434 *attr, char *buf)
1da177e4 435{
86d47f12
JD		 436 int n = to_sensor_dev_attr(attr)->index;
437 struct gl520_data *data = gl520_update_device(dev);
438
439 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
1da177e4
LT		 440}
441
86d47f12
JD		 442static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
443 const char *buf, size_t count)
1da177e4 444{
86d47f12
JD		 445 struct i2c_client *client = to_i2c_client(dev);
446 struct gl520_data *data = i2c_get_clientdata(client);
447 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 448 long v = simple_strtol(buf, NULL, 10);
449
9a61bf63 450 mutex_lock(&data->update_lock);
86d47f12
JD		 451 data->temp_max[n] = TEMP_TO_REG(v);
452 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
9a61bf63 453 mutex_unlock(&data->update_lock);
1da177e4
LT		 454 return count;
455}
456
86d47f12
JD		 457static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
458 *attr, const char *buf, size_t count)
1da177e4 459{
86d47f12
JD		 460 struct i2c_client *client = to_i2c_client(dev);
461 struct gl520_data *data = i2c_get_clientdata(client);
462 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 463 long v = simple_strtol(buf, NULL, 10);
464
9a61bf63 465 mutex_lock(&data->update_lock);
86d47f12
JD		 466 data->temp_max_hyst[n] = TEMP_TO_REG(v);
467 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
468 data->temp_max_hyst[n]);
9a61bf63 469 mutex_unlock(&data->update_lock);
1da177e4
LT		 470 return count;
471}
472
86d47f12
JD		 473static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
474static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
475static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
476 get_temp_max, set_temp_max, 0);
477static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
478 get_temp_max, set_temp_max, 1);
479static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
480 get_temp_max_hyst, set_temp_max_hyst, 0);
481static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
482 get_temp_max_hyst, set_temp_max_hyst, 1);
483
484static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
485 char *buf)
1da177e4 486{
86d47f12 487 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 488 return sprintf(buf, "%d\n", data->alarms);
489}
490
86d47f12
JD		 491static ssize_t get_beep_enable(struct device *dev, struct device_attribute
492 *attr, char *buf)
1da177e4 493{
86d47f12 494 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 495 return sprintf(buf, "%d\n", data->beep_enable);
496}
497
86d47f12
JD		 498static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
499 char *buf)
1da177e4 500{
86d47f12 501 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 502 return sprintf(buf, "%d\n", data->beep_mask);
503}
504
86d47f12
JD		 505static ssize_t set_beep_enable(struct device *dev, struct device_attribute
506 *attr, const char *buf, size_t count)
1da177e4 507{
86d47f12
JD		 508 struct i2c_client *client = to_i2c_client(dev);
509 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4
LT		 510 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
511
9a61bf63 512 mutex_lock(&data->update_lock);
1da177e4 513 data->beep_enable = !r;
86d47f12
JD		 514 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
515 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
516 & ~0x04) | (r << 2));
9a61bf63 517 mutex_unlock(&data->update_lock);
1da177e4
LT		 518 return count;
519}
520
86d47f12
JD		 521static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
522 const char *buf, size_t count)
1da177e4 523{
86d47f12
JD		 524 struct i2c_client *client = to_i2c_client(dev);
525 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4 526 u8 r = simple_strtoul(buf, NULL, 10);
f28dc2f7 527
9a61bf63 528 mutex_lock(&data->update_lock);
1da177e4
LT		 529 r &= data->alarm_mask;
530 data->beep_mask = r;
86d47f12 531 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
9a61bf63 532 mutex_unlock(&data->update_lock);
1da177e4
LT		 533 return count;
534}
535
86d47f12
JD		 536static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
537static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
538 get_beep_enable, set_beep_enable);
539static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
540 get_beep_mask, set_beep_mask);
541
e86a7760
JD		 542static ssize_t get_alarm(struct device *dev, struct device_attribute *attr,
543 char *buf)
544{
545 int bit_nr = to_sensor_dev_attr(attr)->index;
546 struct gl520_data *data = gl520_update_device(dev);
547
548 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
549}
550
551static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
552static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
553static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
554static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
555static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
556static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
557static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
558static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
559static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
560
561static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
562 char *buf)
563{
564 int bitnr = to_sensor_dev_attr(attr)->index;
565 struct gl520_data *data = gl520_update_device(dev);
566
567 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
568}
569
570static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
571 const char *buf, size_t count)
572{
573 struct i2c_client *client = to_i2c_client(dev);
574 struct gl520_data *data = i2c_get_clientdata(client);
575 int bitnr = to_sensor_dev_attr(attr)->index;
576 unsigned long bit;
577
578 bit = simple_strtoul(buf, NULL, 10);
579 if (bit & ~1)
580 return -EINVAL;
581
582 mutex_lock(&data->update_lock);
583 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
584 if (bit)
585 data->beep_mask |= (1 << bitnr);
586 else
587 data->beep_mask &= ~(1 << bitnr);
588 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
589 mutex_unlock(&data->update_lock);
590 return count;
591}
592
593static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
594static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
595static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
596static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
597static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
598static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
599static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
600static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
601static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
602
87808be4
JD		 603static struct attribute *gl520_attributes[] = {
604 &dev_attr_cpu0_vid.attr,
605
86d47f12
JD		 606 &sensor_dev_attr_in0_input.dev_attr.attr,
607 &sensor_dev_attr_in0_min.dev_attr.attr,
608 &sensor_dev_attr_in0_max.dev_attr.attr,
e86a7760
JD		 609 &sensor_dev_attr_in0_alarm.dev_attr.attr,
610 &sensor_dev_attr_in0_beep.dev_attr.attr,
86d47f12
JD		 611 &sensor_dev_attr_in1_input.dev_attr.attr,
612 &sensor_dev_attr_in1_min.dev_attr.attr,
613 &sensor_dev_attr_in1_max.dev_attr.attr,
e86a7760
JD		 614 &sensor_dev_attr_in1_alarm.dev_attr.attr,
615 &sensor_dev_attr_in1_beep.dev_attr.attr,
86d47f12
JD		 616 &sensor_dev_attr_in2_input.dev_attr.attr,
617 &sensor_dev_attr_in2_min.dev_attr.attr,
618 &sensor_dev_attr_in2_max.dev_attr.attr,
e86a7760
JD		 619 &sensor_dev_attr_in2_alarm.dev_attr.attr,
620 &sensor_dev_attr_in2_beep.dev_attr.attr,
86d47f12
JD		 621 &sensor_dev_attr_in3_input.dev_attr.attr,
622 &sensor_dev_attr_in3_min.dev_attr.attr,
623 &sensor_dev_attr_in3_max.dev_attr.attr,
e86a7760
JD		 624 &sensor_dev_attr_in3_alarm.dev_attr.attr,
625 &sensor_dev_attr_in3_beep.dev_attr.attr,
86d47f12
JD		 626
627 &sensor_dev_attr_fan1_input.dev_attr.attr,
628 &sensor_dev_attr_fan1_min.dev_attr.attr,
629 &sensor_dev_attr_fan1_div.dev_attr.attr,
e86a7760
JD		 630 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
631 &sensor_dev_attr_fan1_beep.dev_attr.attr,
87808be4 632 &dev_attr_fan1_off.attr,
86d47f12
JD		 633 &sensor_dev_attr_fan2_input.dev_attr.attr,
634 &sensor_dev_attr_fan2_min.dev_attr.attr,
635 &sensor_dev_attr_fan2_div.dev_attr.attr,
e86a7760
JD		 636 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
637 &sensor_dev_attr_fan2_beep.dev_attr.attr,
87808be4 638
86d47f12
JD		 639 &sensor_dev_attr_temp1_input.dev_attr.attr,
640 &sensor_dev_attr_temp1_max.dev_attr.attr,
641 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
e86a7760
JD		 642 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
643 &sensor_dev_attr_temp1_beep.dev_attr.attr,
87808be4
JD		 644
645 &dev_attr_alarms.attr,
646 &dev_attr_beep_enable.attr,
647 &dev_attr_beep_mask.attr,
648 NULL
649};
650
651static const struct attribute_group gl520_group = {
652 .attrs = gl520_attributes,
653};
654
655static struct attribute *gl520_attributes_opt[] = {
86d47f12
JD		 656 &sensor_dev_attr_in4_input.dev_attr.attr,
657 &sensor_dev_attr_in4_min.dev_attr.attr,
658 &sensor_dev_attr_in4_max.dev_attr.attr,
e86a7760
JD		 659 &sensor_dev_attr_in4_alarm.dev_attr.attr,
660 &sensor_dev_attr_in4_beep.dev_attr.attr,
87808be4 661
86d47f12
JD		 662 &sensor_dev_attr_temp2_input.dev_attr.attr,
663 &sensor_dev_attr_temp2_max.dev_attr.attr,
664 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
e86a7760
JD		 665 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
666 &sensor_dev_attr_temp2_beep.dev_attr.attr,
87808be4
JD		 667 NULL
668};
669
670static const struct attribute_group gl520_group_opt = {
671 .attrs = gl520_attributes_opt,
672};
673
1da177e4
LT		 674
675/*
676 * Real code
677 */
678
a23a9fe1 679/* Return 0 if detection is successful, -ENODEV otherwise */
310ec792 680static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
1da177e4 681{
a23a9fe1 682 struct i2c_adapter *adapter = client->adapter;
1da177e4
LT		 683
684 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
685 I2C_FUNC_SMBUS_WORD_DATA))
a23a9fe1 686 return -ENODEV;
1da177e4
LT		 687
688 /* Determine the chip type. */
52df6440
JD		 689 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
690 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
691 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
692 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
693 return -ENODEV;
1da177e4
LT		 694 }
695
a23a9fe1 696 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
1da177e4 697
a23a9fe1
JD		 698 return 0;
699}
700
701static int gl520_probe(struct i2c_client *client,
702 const struct i2c_device_id *id)
703{
704 struct gl520_data *data;
705 int err;
706
707 data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL);
708 if (!data) {
709 err = -ENOMEM;
710 goto exit;
711 }
712
713 i2c_set_clientdata(client, data);
714 mutex_init(&data->update_lock);
1da177e4
LT		 715
716 /* Initialize the GL520SM chip */
f28dc2f7 717 gl520_init_client(client);
1da177e4
LT		 718
719 /* Register sysfs hooks */
f28dc2f7 720 if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group)))
a23a9fe1 721 goto exit_free;
1da177e4 722
87808be4 723 if (data->two_temps) {
f28dc2f7 724 if ((err = device_create_file(&client->dev,
86d47f12 725 &sensor_dev_attr_temp2_input.dev_attr))
f28dc2f7 726 || (err = device_create_file(&client->dev,
86d47f12 727 &sensor_dev_attr_temp2_max.dev_attr))
f28dc2f7 728 || (err = device_create_file(&client->dev,
e86a7760
JD		 729 &sensor_dev_attr_temp2_max_hyst.dev_attr))
730 || (err = device_create_file(&client->dev,
731 &sensor_dev_attr_temp2_alarm.dev_attr))
732 || (err = device_create_file(&client->dev,
733 &sensor_dev_attr_temp2_beep.dev_attr)))
87808be4
JD		 734 goto exit_remove_files;
735 } else {
f28dc2f7 736 if ((err = device_create_file(&client->dev,
86d47f12 737 &sensor_dev_attr_in4_input.dev_attr))
f28dc2f7 738 || (err = device_create_file(&client->dev,
86d47f12 739 &sensor_dev_attr_in4_min.dev_attr))
f28dc2f7 740 || (err = device_create_file(&client->dev,
e86a7760
JD		 741 &sensor_dev_attr_in4_max.dev_attr))
742 || (err = device_create_file(&client->dev,
743 &sensor_dev_attr_in4_alarm.dev_attr))
744 || (err = device_create_file(&client->dev,
745 &sensor_dev_attr_in4_beep.dev_attr)))
87808be4
JD		 746 goto exit_remove_files;
747 }
1da177e4 748
1da177e4 749
f28dc2f7 750 data->hwmon_dev = hwmon_device_register(&client->dev);
1beeffe4
TJ		 751 if (IS_ERR(data->hwmon_dev)) {
752 err = PTR_ERR(data->hwmon_dev);
87808be4
JD		 753 goto exit_remove_files;
754 }
1da177e4
LT		 755
756 return 0;
757
87808be4 758exit_remove_files:
f28dc2f7
JD		 759 sysfs_remove_group(&client->dev.kobj, &gl520_group);
760 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
1da177e4
LT		 761exit_free:
762 kfree(data);
763exit:
764 return err;
765}
766
767
768/* Called when we have found a new GL520SM. */
769static void gl520_init_client(struct i2c_client *client)
770{
771 struct gl520_data *data = i2c_get_clientdata(client);
772 u8 oldconf, conf;
773
774 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
775
776 data->alarm_mask = 0xff;
303760b4 777 data->vrm = vid_which_vrm();
1da177e4
LT		 778
779 if (extra_sensor_type == 1)
780 conf &= ~0x10;
781 else if (extra_sensor_type == 2)
782 conf |= 0x10;
783 data->two_temps = !(conf & 0x10);
784
785 /* If IRQ# is disabled, we can safely force comparator mode */
786 if (!(conf & 0x20))
787 conf &= 0xf7;
788
789 /* Enable monitoring if needed */
790 conf |= 0x40;
791
792 if (conf != oldconf)
793 gl520_write_value(client, GL520_REG_CONF, conf);
794
795 gl520_update_device(&(client->dev));
796
797 if (data->fan_min[0] == 0)
798 data->alarm_mask &= ~0x20;
799 if (data->fan_min[1] == 0)
800 data->alarm_mask &= ~0x40;
801
802 data->beep_mask &= data->alarm_mask;
803 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
804}
805
a23a9fe1 806static int gl520_remove(struct i2c_client *client)
1da177e4 807{
943b0830 808 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4 809
1beeffe4 810 hwmon_device_unregister(data->hwmon_dev);
87808be4
JD		 811 sysfs_remove_group(&client->dev.kobj, &gl520_group);
812 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
943b0830 813
943b0830 814 kfree(data);
1da177e4
LT		 815 return 0;
816}
817
818
f28dc2f7 819/* Registers 0x07 to 0x0c are word-sized, others are byte-sized
1da177e4
LT		 820 GL520 uses a high-byte first convention */
821static int gl520_read_value(struct i2c_client *client, u8 reg)
822{
823 if ((reg >= 0x07) && (reg <= 0x0c))
824 return swab16(i2c_smbus_read_word_data(client, reg));
825 else
826 return i2c_smbus_read_byte_data(client, reg);
827}
828
829static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
830{
831 if ((reg >= 0x07) && (reg <= 0x0c))
832 return i2c_smbus_write_word_data(client, reg, swab16(value));
833 else
834 return i2c_smbus_write_byte_data(client, reg, value);
835}
836
837
838static struct gl520_data *gl520_update_device(struct device *dev)
839{
840 struct i2c_client *client = to_i2c_client(dev);
841 struct gl520_data *data = i2c_get_clientdata(client);
8b4b0ab4 842 int val, i;
1da177e4 843
9a61bf63 844 mutex_lock(&data->update_lock);
1da177e4 845
0cacdf29 846 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
1da177e4
LT		 847
848 dev_dbg(&client->dev, "Starting gl520sm update\n");
849
850 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
851 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
852 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
853
8b4b0ab4
JD		 854 for (i = 0; i < 4; i++) {
855 data->in_input[i] = gl520_read_value(client,
856 GL520_REG_IN_INPUT[i]);
857 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
858 data->in_min[i] = val & 0xff;
859 data->in_max[i] = (val >> 8) & 0xff;
860 }
1da177e4
LT		 861
862 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
863 data->fan_input[0] = (val >> 8) & 0xff;
864 data->fan_input[1] = val & 0xff;
865
866 val = gl520_read_value(client, GL520_REG_FAN_MIN);
867 data->fan_min[0] = (val >> 8) & 0xff;
868 data->fan_min[1] = val & 0xff;
869
8b4b0ab4
JD		 870 data->temp_input[0] = gl520_read_value(client,
871 GL520_REG_TEMP_INPUT[0]);
872 data->temp_max[0] = gl520_read_value(client,
873 GL520_REG_TEMP_MAX[0]);
874 data->temp_max_hyst[0] = gl520_read_value(client,
875 GL520_REG_TEMP_MAX_HYST[0]);
1da177e4
LT		 876
877 val = gl520_read_value(client, GL520_REG_FAN_DIV);
878 data->fan_div[0] = (val >> 6) & 0x03;
879 data->fan_div[1] = (val >> 4) & 0x03;
880 data->fan_off = (val >> 2) & 0x01;
881
882 data->alarms &= data->alarm_mask;
883
884 val = gl520_read_value(client, GL520_REG_CONF);
885 data->beep_enable = !((val >> 2) & 1);
886
1da177e4
LT		 887 /* Temp1 and Vin4 are the same input */
888 if (data->two_temps) {
8b4b0ab4
JD		 889 data->temp_input[1] = gl520_read_value(client,
890 GL520_REG_TEMP_INPUT[1]);
891 data->temp_max[1] = gl520_read_value(client,
892 GL520_REG_TEMP_MAX[1]);
893 data->temp_max_hyst[1] = gl520_read_value(client,
894 GL520_REG_TEMP_MAX_HYST[1]);
1da177e4 895 } else {
8b4b0ab4
JD		 896 data->in_input[4] = gl520_read_value(client,
897 GL520_REG_IN_INPUT[4]);
898 data->in_min[4] = gl520_read_value(client,
899 GL520_REG_IN_MIN[4]);
900 data->in_max[4] = gl520_read_value(client,
901 GL520_REG_IN_MAX[4]);
1da177e4
LT		 902 }
903
904 data->last_updated = jiffies;
905 data->valid = 1;
906 }
907
9a61bf63 908 mutex_unlock(&data->update_lock);
1da177e4
LT		 909
910 return data;
911}
912
913
914static int __init sensors_gl520sm_init(void)
915{
916 return i2c_add_driver(&gl520_driver);
917}
918
919static void __exit sensors_gl520sm_exit(void)
920{
921 i2c_del_driver(&gl520_driver);
922}
923
924
925MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
96de0e25 926 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
1da177e4
LT		 927 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
928MODULE_DESCRIPTION("GL520SM driver");
929MODULE_LICENSE("GPL");
930
931module_init(sensors_gl520sm_init);
932module_exit(sensors_gl520sm_exit);
Clone of davem's net-next-2.6 tree