hwmon: (dme1737) fix Super-IO device ID override
[linux-2.6-block.git] / drivers / hwmon / adm1025.c
CommitLineData
1da177e4
LT
1/*
2 * adm1025.c
3 *
4 * Copyright (C) 2000 Chen-Yuan Wu <gwu@esoft.com>
5 * Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
6 *
7 * The ADM1025 is a sensor chip made by Analog Devices. It reports up to 6
8 * voltages (including its own power source) and up to two temperatures
9 * (its own plus up to one external one). Voltages are scaled internally
10 * (which is not the common way) with ratios such that the nominal value
11 * of each voltage correspond to a register value of 192 (which means a
12 * resolution of about 0.5% of the nominal value). Temperature values are
13 * reported with a 1 deg resolution and a 3 deg accuracy. Complete
14 * datasheet can be obtained from Analog's website at:
15 * http://www.analog.com/Analog_Root/productPage/productHome/0,2121,ADM1025,00.html
16 *
17 * This driver also supports the ADM1025A, which differs from the ADM1025
18 * only in that it has "open-drain VID inputs while the ADM1025 has
19 * on-chip 100k pull-ups on the VID inputs". It doesn't make any
20 * difference for us.
21 *
22 * This driver also supports the NE1619, a sensor chip made by Philips.
23 * That chip is similar to the ADM1025A, with a few differences. The only
24 * difference that matters to us is that the NE1619 has only two possible
25 * addresses while the ADM1025A has a third one. Complete datasheet can be
26 * obtained from Philips's website at:
27 * http://www.semiconductors.philips.com/pip/NE1619DS.html
28 *
29 * Since the ADM1025 was the first chipset supported by this driver, most
30 * comments will refer to this chipset, but are actually general and
31 * concern all supported chipsets, unless mentioned otherwise.
32 *
33 * This program is free software; you can redistribute it and/or modify
34 * it under the terms of the GNU General Public License as published by
35 * the Free Software Foundation; either version 2 of the License, or
36 * (at your option) any later version.
37 *
38 * This program is distributed in the hope that it will be useful,
39 * but WITHOUT ANY WARRANTY; without even the implied warranty of
40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41 * GNU General Public License for more details.
42 *
43 * You should have received a copy of the GNU General Public License
44 * along with this program; if not, write to the Free Software
45 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
46 */
47
1da177e4
LT
48#include <linux/module.h>
49#include <linux/init.h>
50#include <linux/slab.h>
51#include <linux/jiffies.h>
52#include <linux/i2c.h>
943b0830 53#include <linux/hwmon.h>
d8543e7f 54#include <linux/hwmon-sysfs.h>
303760b4 55#include <linux/hwmon-vid.h>
943b0830 56#include <linux/err.h>
9a61bf63 57#include <linux/mutex.h>
1da177e4
LT
58
59/*
60 * Addresses to scan
61 * ADM1025 and ADM1025A have three possible addresses: 0x2c, 0x2d and 0x2e.
62 * NE1619 has two possible addresses: 0x2c and 0x2d.
63 */
64
65static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
1da177e4
LT
66
67/*
68 * Insmod parameters
69 */
70
f4b50261 71I2C_CLIENT_INSMOD_2(adm1025, ne1619);
1da177e4
LT
72
73/*
74 * The ADM1025 registers
75 */
76
77#define ADM1025_REG_MAN_ID 0x3E
4e952799 78#define ADM1025_REG_CHIP_ID 0x3F
1da177e4
LT
79#define ADM1025_REG_CONFIG 0x40
80#define ADM1025_REG_STATUS1 0x41
81#define ADM1025_REG_STATUS2 0x42
82#define ADM1025_REG_IN(nr) (0x20 + (nr))
83#define ADM1025_REG_IN_MAX(nr) (0x2B + (nr) * 2)
84#define ADM1025_REG_IN_MIN(nr) (0x2C + (nr) * 2)
85#define ADM1025_REG_TEMP(nr) (0x26 + (nr))
86#define ADM1025_REG_TEMP_HIGH(nr) (0x37 + (nr) * 2)
87#define ADM1025_REG_TEMP_LOW(nr) (0x38 + (nr) * 2)
88#define ADM1025_REG_VID 0x47
89#define ADM1025_REG_VID4 0x49
90
91/*
92 * Conversions and various macros
93 * The ADM1025 uses signed 8-bit values for temperatures.
94 */
95
4e952799 96static const int in_scale[6] = { 2500, 2250, 3300, 5000, 12000, 3300 };
1da177e4
LT
97
98#define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192)
99#define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \
100 (val) * 192 >= (scale) * 255 ? 255 : \
101 ((val) * 192 + (scale)/2) / (scale))
102
103#define TEMP_FROM_REG(reg) ((reg) * 1000)
104#define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \
105 (val) >= 126500 ? 127 : \
106 (((val) < 0 ? (val)-500 : (val)+500) / 1000))
107
108/*
109 * Functions declaration
110 */
111
112static int adm1025_attach_adapter(struct i2c_adapter *adapter);
113static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind);
114static void adm1025_init_client(struct i2c_client *client);
115static int adm1025_detach_client(struct i2c_client *client);
116static struct adm1025_data *adm1025_update_device(struct device *dev);
117
118/*
119 * Driver data (common to all clients)
120 */
121
122static struct i2c_driver adm1025_driver = {
cdaf7934 123 .driver = {
cdaf7934
LR
124 .name = "adm1025",
125 },
1da177e4
LT
126 .attach_adapter = adm1025_attach_adapter,
127 .detach_client = adm1025_detach_client,
128};
129
130/*
131 * Client data (each client gets its own)
132 */
133
134struct adm1025_data {
135 struct i2c_client client;
1beeffe4 136 struct device *hwmon_dev;
9a61bf63 137 struct mutex update_lock;
1da177e4
LT
138 char valid; /* zero until following fields are valid */
139 unsigned long last_updated; /* in jiffies */
140
141 u8 in[6]; /* register value */
142 u8 in_max[6]; /* register value */
143 u8 in_min[6]; /* register value */
144 s8 temp[2]; /* register value */
145 s8 temp_min[2]; /* register value */
146 s8 temp_max[2]; /* register value */
147 u16 alarms; /* register values, combined */
148 u8 vid; /* register values, combined */
149 u8 vrm;
150};
151
152/*
153 * Sysfs stuff
154 */
155
d8543e7f
JD
156static ssize_t
157show_in(struct device *dev, struct device_attribute *attr, char *buf)
158{
159 int index = to_sensor_dev_attr(attr)->index;
160 struct adm1025_data *data = adm1025_update_device(dev);
161 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[index],
162 in_scale[index]));
163}
164
165static ssize_t
166show_in_min(struct device *dev, struct device_attribute *attr, char *buf)
167{
168 int index = to_sensor_dev_attr(attr)->index;
169 struct adm1025_data *data = adm1025_update_device(dev);
170 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[index],
171 in_scale[index]));
172}
173
174static ssize_t
175show_in_max(struct device *dev, struct device_attribute *attr, char *buf)
176{
177 int index = to_sensor_dev_attr(attr)->index;
178 struct adm1025_data *data = adm1025_update_device(dev);
179 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[index],
180 in_scale[index]));
181}
182
183static ssize_t
184show_temp(struct device *dev, struct device_attribute *attr, char *buf)
185{
186 int index = to_sensor_dev_attr(attr)->index;
187 struct adm1025_data *data = adm1025_update_device(dev);
188 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[index]));
189}
190
191static ssize_t
192show_temp_min(struct device *dev, struct device_attribute *attr, char *buf)
193{
194 int index = to_sensor_dev_attr(attr)->index;
195 struct adm1025_data *data = adm1025_update_device(dev);
196 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[index]));
197}
198
199static ssize_t
200show_temp_max(struct device *dev, struct device_attribute *attr, char *buf)
201{
202 int index = to_sensor_dev_attr(attr)->index;
203 struct adm1025_data *data = adm1025_update_device(dev);
204 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[index]));
205}
206
207static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
208 const char *buf, size_t count)
209{
210 int index = to_sensor_dev_attr(attr)->index;
211 struct i2c_client *client = to_i2c_client(dev);
212 struct adm1025_data *data = i2c_get_clientdata(client);
213 long val = simple_strtol(buf, NULL, 10);
214
215 mutex_lock(&data->update_lock);
216 data->in_min[index] = IN_TO_REG(val, in_scale[index]);
217 i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MIN(index),
218 data->in_min[index]);
219 mutex_unlock(&data->update_lock);
220 return count;
221}
222
223static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
224 const char *buf, size_t count)
225{
226 int index = to_sensor_dev_attr(attr)->index;
227 struct i2c_client *client = to_i2c_client(dev);
228 struct adm1025_data *data = i2c_get_clientdata(client);
229 long val = simple_strtol(buf, NULL, 10);
230
231 mutex_lock(&data->update_lock);
232 data->in_max[index] = IN_TO_REG(val, in_scale[index]);
233 i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(index),
234 data->in_max[index]);
235 mutex_unlock(&data->update_lock);
236 return count;
237}
1da177e4
LT
238
239#define set_in(offset) \
d8543e7f
JD
240static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
241 show_in, NULL, offset); \
242static SENSOR_DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
243 show_in_min, set_in_min, offset); \
244static SENSOR_DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
245 show_in_max, set_in_max, offset)
1da177e4
LT
246set_in(0);
247set_in(1);
248set_in(2);
249set_in(3);
250set_in(4);
251set_in(5);
252
d8543e7f
JD
253static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
254 const char *buf, size_t count)
255{
256 int index = to_sensor_dev_attr(attr)->index;
257 struct i2c_client *client = to_i2c_client(dev);
258 struct adm1025_data *data = i2c_get_clientdata(client);
259 long val = simple_strtol(buf, NULL, 10);
260
261 mutex_lock(&data->update_lock);
262 data->temp_min[index] = TEMP_TO_REG(val);
263 i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_LOW(index),
264 data->temp_min[index]);
265 mutex_unlock(&data->update_lock);
266 return count;
267}
268
269static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
270 const char *buf, size_t count)
271{
272 int index = to_sensor_dev_attr(attr)->index;
273 struct i2c_client *client = to_i2c_client(dev);
274 struct adm1025_data *data = i2c_get_clientdata(client);
275 long val = simple_strtol(buf, NULL, 10);
276
277 mutex_lock(&data->update_lock);
278 data->temp_max[index] = TEMP_TO_REG(val);
279 i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_HIGH(index),
280 data->temp_max[index]);
281 mutex_unlock(&data->update_lock);
282 return count;
283}
284
1da177e4 285#define set_temp(offset) \
d8543e7f
JD
286static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
287 show_temp, NULL, offset - 1); \
288static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
289 show_temp_min, set_temp_min, offset - 1); \
290static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
291 show_temp_max, set_temp_max, offset - 1)
1da177e4
LT
292set_temp(1);
293set_temp(2);
294
4e952799
JD
295static ssize_t
296show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT
297{
298 struct adm1025_data *data = adm1025_update_device(dev);
299 return sprintf(buf, "%u\n", data->alarms);
300}
301static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
302
bb081300
JD
303static ssize_t
304show_alarm(struct device *dev, struct device_attribute *attr, char *buf)
305{
306 int bitnr = to_sensor_dev_attr(attr)->index;
307 struct adm1025_data *data = adm1025_update_device(dev);
308 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
309}
310static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
311static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
312static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
313static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
314static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
315static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
316static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 5);
317static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 4);
318static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
319
4e952799
JD
320static ssize_t
321show_vid(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT
322{
323 struct adm1025_data *data = adm1025_update_device(dev);
324 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
325}
937df8df 326static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1da177e4 327
4e952799
JD
328static ssize_t
329show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4 330{
90d6619a 331 struct adm1025_data *data = dev_get_drvdata(dev);
1da177e4
LT
332 return sprintf(buf, "%u\n", data->vrm);
333}
4e952799
JD
334static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
335 const char *buf, size_t count)
1da177e4
LT
336{
337 struct i2c_client *client = to_i2c_client(dev);
338 struct adm1025_data *data = i2c_get_clientdata(client);
339 data->vrm = simple_strtoul(buf, NULL, 10);
340 return count;
341}
342static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
343
344/*
345 * Real code
346 */
347
348static int adm1025_attach_adapter(struct i2c_adapter *adapter)
349{
350 if (!(adapter->class & I2C_CLASS_HWMON))
351 return 0;
2ed2dc3c 352 return i2c_probe(adapter, &addr_data, adm1025_detect);
1da177e4
LT
353}
354
681c6f7a 355static struct attribute *adm1025_attributes[] = {
d8543e7f
JD
356 &sensor_dev_attr_in0_input.dev_attr.attr,
357 &sensor_dev_attr_in1_input.dev_attr.attr,
358 &sensor_dev_attr_in2_input.dev_attr.attr,
359 &sensor_dev_attr_in3_input.dev_attr.attr,
360 &sensor_dev_attr_in5_input.dev_attr.attr,
361 &sensor_dev_attr_in0_min.dev_attr.attr,
362 &sensor_dev_attr_in1_min.dev_attr.attr,
363 &sensor_dev_attr_in2_min.dev_attr.attr,
364 &sensor_dev_attr_in3_min.dev_attr.attr,
365 &sensor_dev_attr_in5_min.dev_attr.attr,
366 &sensor_dev_attr_in0_max.dev_attr.attr,
367 &sensor_dev_attr_in1_max.dev_attr.attr,
368 &sensor_dev_attr_in2_max.dev_attr.attr,
369 &sensor_dev_attr_in3_max.dev_attr.attr,
370 &sensor_dev_attr_in5_max.dev_attr.attr,
bb081300
JD
371 &sensor_dev_attr_in0_alarm.dev_attr.attr,
372 &sensor_dev_attr_in1_alarm.dev_attr.attr,
373 &sensor_dev_attr_in2_alarm.dev_attr.attr,
374 &sensor_dev_attr_in3_alarm.dev_attr.attr,
375 &sensor_dev_attr_in5_alarm.dev_attr.attr,
d8543e7f
JD
376 &sensor_dev_attr_temp1_input.dev_attr.attr,
377 &sensor_dev_attr_temp2_input.dev_attr.attr,
378 &sensor_dev_attr_temp1_min.dev_attr.attr,
379 &sensor_dev_attr_temp2_min.dev_attr.attr,
380 &sensor_dev_attr_temp1_max.dev_attr.attr,
381 &sensor_dev_attr_temp2_max.dev_attr.attr,
bb081300
JD
382 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
383 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
384 &sensor_dev_attr_temp1_fault.dev_attr.attr,
681c6f7a
MH
385 &dev_attr_alarms.attr,
386 &dev_attr_cpu0_vid.attr,
387 &dev_attr_vrm.attr,
388 NULL
389};
390
391static const struct attribute_group adm1025_group = {
392 .attrs = adm1025_attributes,
393};
394
4e952799 395static struct attribute *adm1025_attributes_in4[] = {
d8543e7f
JD
396 &sensor_dev_attr_in4_input.dev_attr.attr,
397 &sensor_dev_attr_in4_min.dev_attr.attr,
398 &sensor_dev_attr_in4_max.dev_attr.attr,
bb081300 399 &sensor_dev_attr_in4_alarm.dev_attr.attr,
681c6f7a
MH
400 NULL
401};
402
4e952799
JD
403static const struct attribute_group adm1025_group_in4 = {
404 .attrs = adm1025_attributes_in4,
681c6f7a
MH
405};
406
1da177e4
LT
407/*
408 * The following function does more than just detection. If detection
409 * succeeds, it also registers the new chip.
410 */
411static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind)
412{
4e952799 413 struct i2c_client *client;
1da177e4
LT
414 struct adm1025_data *data;
415 int err = 0;
416 const char *name = "";
417 u8 config;
418
419 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
420 goto exit;
421
ba9c2e8d 422 if (!(data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL))) {
1da177e4
LT
423 err = -ENOMEM;
424 goto exit;
425 }
1da177e4 426
4e952799
JD
427 client = &data->client;
428 i2c_set_clientdata(client, data);
429 client->addr = address;
430 client->adapter = adapter;
431 client->driver = &adm1025_driver;
1da177e4
LT
432
433 /*
434 * Now we do the remaining detection. A negative kind means that
435 * the driver was loaded with no force parameter (default), so we
436 * must both detect and identify the chip. A zero kind means that
437 * the driver was loaded with the force parameter, the detection
438 * step shall be skipped. A positive kind means that the driver
439 * was loaded with the force parameter and a given kind of chip is
440 * requested, so both the detection and the identification steps
441 * are skipped.
442 */
4e952799 443 config = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG);
1da177e4
LT
444 if (kind < 0) { /* detection */
445 if ((config & 0x80) != 0x00
4e952799 446 || (i2c_smbus_read_byte_data(client,
1da177e4 447 ADM1025_REG_STATUS1) & 0xC0) != 0x00
4e952799 448 || (i2c_smbus_read_byte_data(client,
1da177e4
LT
449 ADM1025_REG_STATUS2) & 0xBC) != 0x00) {
450 dev_dbg(&adapter->dev,
451 "ADM1025 detection failed at 0x%02x.\n",
452 address);
453 goto exit_free;
454 }
455 }
456
457 if (kind <= 0) { /* identification */
458 u8 man_id, chip_id;
459
4e952799
JD
460 man_id = i2c_smbus_read_byte_data(client, ADM1025_REG_MAN_ID);
461 chip_id = i2c_smbus_read_byte_data(client, ADM1025_REG_CHIP_ID);
462
1da177e4
LT
463 if (man_id == 0x41) { /* Analog Devices */
464 if ((chip_id & 0xF0) == 0x20) { /* ADM1025/ADM1025A */
465 kind = adm1025;
466 }
467 } else
468 if (man_id == 0xA1) { /* Philips */
469 if (address != 0x2E
470 && (chip_id & 0xF0) == 0x20) { /* NE1619 */
471 kind = ne1619;
472 }
473 }
474
475 if (kind <= 0) { /* identification failed */
476 dev_info(&adapter->dev,
477 "Unsupported chip (man_id=0x%02X, "
478 "chip_id=0x%02X).\n", man_id, chip_id);
479 goto exit_free;
480 }
481 }
482
483 if (kind == adm1025) {
484 name = "adm1025";
485 } else if (kind == ne1619) {
486 name = "ne1619";
487 }
488
489 /* We can fill in the remaining client fields */
4e952799 490 strlcpy(client->name, name, I2C_NAME_SIZE);
9a61bf63 491 mutex_init(&data->update_lock);
1da177e4
LT
492
493 /* Tell the I2C layer a new client has arrived */
4e952799 494 if ((err = i2c_attach_client(client)))
1da177e4
LT
495 goto exit_free;
496
497 /* Initialize the ADM1025 chip */
4e952799 498 adm1025_init_client(client);
1da177e4
LT
499
500 /* Register sysfs hooks */
4e952799 501 if ((err = sysfs_create_group(&client->dev.kobj, &adm1025_group)))
943b0830 502 goto exit_detach;
1da177e4
LT
503
504 /* Pin 11 is either in4 (+12V) or VID4 */
505 if (!(config & 0x20)) {
4e952799
JD
506 if ((err = sysfs_create_group(&client->dev.kobj,
507 &adm1025_group_in4)))
681c6f7a
MH
508 goto exit_remove;
509 }
510
4e952799 511 data->hwmon_dev = hwmon_device_register(&client->dev);
1beeffe4
TJ
512 if (IS_ERR(data->hwmon_dev)) {
513 err = PTR_ERR(data->hwmon_dev);
681c6f7a 514 goto exit_remove;
1da177e4
LT
515 }
516
517 return 0;
518
681c6f7a 519exit_remove:
4e952799
JD
520 sysfs_remove_group(&client->dev.kobj, &adm1025_group);
521 sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4);
943b0830 522exit_detach:
4e952799 523 i2c_detach_client(client);
1da177e4
LT
524exit_free:
525 kfree(data);
526exit:
527 return err;
528}
529
530static void adm1025_init_client(struct i2c_client *client)
531{
532 u8 reg;
533 struct adm1025_data *data = i2c_get_clientdata(client);
534 int i;
535
303760b4 536 data->vrm = vid_which_vrm();
1da177e4
LT
537
538 /*
539 * Set high limits
540 * Usually we avoid setting limits on driver init, but it happens
541 * that the ADM1025 comes with stupid default limits (all registers
542 * set to 0). In case the chip has not gone through any limit
543 * setting yet, we better set the high limits to the max so that
544 * no alarm triggers.
545 */
546 for (i=0; i<6; i++) {
547 reg = i2c_smbus_read_byte_data(client,
548 ADM1025_REG_IN_MAX(i));
549 if (reg == 0)
550 i2c_smbus_write_byte_data(client,
551 ADM1025_REG_IN_MAX(i),
552 0xFF);
553 }
554 for (i=0; i<2; i++) {
555 reg = i2c_smbus_read_byte_data(client,
556 ADM1025_REG_TEMP_HIGH(i));
557 if (reg == 0)
558 i2c_smbus_write_byte_data(client,
559 ADM1025_REG_TEMP_HIGH(i),
560 0x7F);
561 }
562
563 /*
564 * Start the conversions
565 */
566 reg = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG);
567 if (!(reg & 0x01))
568 i2c_smbus_write_byte_data(client, ADM1025_REG_CONFIG,
569 (reg&0x7E)|0x01);
570}
571
572static int adm1025_detach_client(struct i2c_client *client)
573{
943b0830 574 struct adm1025_data *data = i2c_get_clientdata(client);
1da177e4
LT
575 int err;
576
1beeffe4 577 hwmon_device_unregister(data->hwmon_dev);
681c6f7a 578 sysfs_remove_group(&client->dev.kobj, &adm1025_group);
4e952799 579 sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4);
943b0830 580
7bef5594 581 if ((err = i2c_detach_client(client)))
1da177e4 582 return err;
1da177e4 583
943b0830 584 kfree(data);
1da177e4
LT
585 return 0;
586}
587
588static struct adm1025_data *adm1025_update_device(struct device *dev)
589{
590 struct i2c_client *client = to_i2c_client(dev);
591 struct adm1025_data *data = i2c_get_clientdata(client);
592
9a61bf63 593 mutex_lock(&data->update_lock);
1da177e4
LT
594
595 if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
596 int i;
597
598 dev_dbg(&client->dev, "Updating data.\n");
599 for (i=0; i<6; i++) {
600 data->in[i] = i2c_smbus_read_byte_data(client,
601 ADM1025_REG_IN(i));
602 data->in_min[i] = i2c_smbus_read_byte_data(client,
603 ADM1025_REG_IN_MIN(i));
604 data->in_max[i] = i2c_smbus_read_byte_data(client,
605 ADM1025_REG_IN_MAX(i));
606 }
607 for (i=0; i<2; i++) {
608 data->temp[i] = i2c_smbus_read_byte_data(client,
609 ADM1025_REG_TEMP(i));
610 data->temp_min[i] = i2c_smbus_read_byte_data(client,
611 ADM1025_REG_TEMP_LOW(i));
612 data->temp_max[i] = i2c_smbus_read_byte_data(client,
613 ADM1025_REG_TEMP_HIGH(i));
614 }
615 data->alarms = i2c_smbus_read_byte_data(client,
616 ADM1025_REG_STATUS1)
617 | (i2c_smbus_read_byte_data(client,
618 ADM1025_REG_STATUS2) << 8);
619 data->vid = (i2c_smbus_read_byte_data(client,
620 ADM1025_REG_VID) & 0x0f)
621 | ((i2c_smbus_read_byte_data(client,
622 ADM1025_REG_VID4) & 0x01) << 4);
623
624 data->last_updated = jiffies;
625 data->valid = 1;
626 }
627
9a61bf63 628 mutex_unlock(&data->update_lock);
1da177e4
LT
629
630 return data;
631}
632
633static int __init sensors_adm1025_init(void)
634{
635 return i2c_add_driver(&adm1025_driver);
636}
637
638static void __exit sensors_adm1025_exit(void)
639{
640 i2c_del_driver(&adm1025_driver);
641}
642
643MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
644MODULE_DESCRIPTION("ADM1025 driver");
645MODULE_LICENSE("GPL");
646
647module_init(sensors_adm1025_init);
648module_exit(sensors_adm1025_exit);