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[linux-block.git] / drivers / hwmon / adm1025.c
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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>
303760b4 54#include <linux/hwmon-vid.h>
943b0830 55#include <linux/err.h>
9a61bf63 56#include <linux/mutex.h>
1da177e4
LT		 57
58/*
59 * Addresses to scan
60 * ADM1025 and ADM1025A have three possible addresses: 0x2c, 0x2d and 0x2e.
61 * NE1619 has two possible addresses: 0x2c and 0x2d.
62 */
63
64static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
1da177e4
LT		 65
66/*
67 * Insmod parameters
68 */
69
f4b50261 70I2C_CLIENT_INSMOD_2(adm1025, ne1619);
1da177e4
LT		 71
72/*
73 * The ADM1025 registers
74 */
75
76#define ADM1025_REG_MAN_ID 0x3E
77#define ADM1025_REG_CHIP_ID 0x3F
78#define ADM1025_REG_CONFIG 0x40
79#define ADM1025_REG_STATUS1 0x41
80#define ADM1025_REG_STATUS2 0x42
81#define ADM1025_REG_IN(nr) (0x20 + (nr))
82#define ADM1025_REG_IN_MAX(nr) (0x2B + (nr) * 2)
83#define ADM1025_REG_IN_MIN(nr) (0x2C + (nr) * 2)
84#define ADM1025_REG_TEMP(nr) (0x26 + (nr))
85#define ADM1025_REG_TEMP_HIGH(nr) (0x37 + (nr) * 2)
86#define ADM1025_REG_TEMP_LOW(nr) (0x38 + (nr) * 2)
87#define ADM1025_REG_VID 0x47
88#define ADM1025_REG_VID4 0x49
89
90/*
91 * Conversions and various macros
92 * The ADM1025 uses signed 8-bit values for temperatures.
93 */
94
95static int in_scale[6] = { 2500, 2250, 3300, 5000, 12000, 3300 };
96
97#define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192)
98#define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \
99 (val) * 192 >= (scale) * 255 ? 255 : \
100 ((val) * 192 + (scale)/2) / (scale))
101
102#define TEMP_FROM_REG(reg) ((reg) * 1000)
103#define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \
104 (val) >= 126500 ? 127 : \
105 (((val) < 0 ? (val)-500 : (val)+500) / 1000))
106
107/*
108 * Functions declaration
109 */
110
111static int adm1025_attach_adapter(struct i2c_adapter *adapter);
112static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind);
113static void adm1025_init_client(struct i2c_client *client);
114static int adm1025_detach_client(struct i2c_client *client);
115static struct adm1025_data *adm1025_update_device(struct device *dev);
116
117/*
118 * Driver data (common to all clients)
119 */
120
121static struct i2c_driver adm1025_driver = {
cdaf7934 122 .driver = {
cdaf7934
LR		 123 .name = "adm1025",
124 },
1da177e4 125 .id = I2C_DRIVERID_ADM1025,
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
156#define show_in(offset) \
74880c06 157static ssize_t show_in##offset(struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 158{ \
159 struct adm1025_data *data = adm1025_update_device(dev); \
160 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
161 in_scale[offset])); \
162} \
74880c06 163static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 164{ \
165 struct adm1025_data *data = adm1025_update_device(dev); \
166 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
167 in_scale[offset])); \
168} \
74880c06 169static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 170{ \
171 struct adm1025_data *data = adm1025_update_device(dev); \
172 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
173 in_scale[offset])); \
174} \
175static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL);
176show_in(0);
177show_in(1);
178show_in(2);
179show_in(3);
180show_in(4);
181show_in(5);
182
183#define show_temp(offset) \
74880c06 184static ssize_t show_temp##offset(struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 185{ \
186 struct adm1025_data *data = adm1025_update_device(dev); \
187 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
188} \
74880c06 189static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 190{ \
191 struct adm1025_data *data = adm1025_update_device(dev); \
192 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
193} \
74880c06 194static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 195{ \
196 struct adm1025_data *data = adm1025_update_device(dev); \
197 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
198}\
199static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp##offset, NULL);
200show_temp(1);
201show_temp(2);
202
203#define set_in(offset) \
74880c06 204static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
1da177e4
LT		 205 size_t count) \
206{ \
207 struct i2c_client *client = to_i2c_client(dev); \
208 struct adm1025_data *data = i2c_get_clientdata(client); \
209 long val = simple_strtol(buf, NULL, 10); \
210 \
9a61bf63 211 mutex_lock(&data->update_lock); \
1da177e4
LT		 212 data->in_min[offset] = IN_TO_REG(val, in_scale[offset]); \
213 i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MIN(offset), \
214 data->in_min[offset]); \
9a61bf63 215 mutex_unlock(&data->update_lock); \
1da177e4
LT		 216 return count; \
217} \
74880c06 218static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
1da177e4
LT		 219 size_t count) \
220{ \
221 struct i2c_client *client = to_i2c_client(dev); \
222 struct adm1025_data *data = i2c_get_clientdata(client); \
223 long val = simple_strtol(buf, NULL, 10); \
224 \
9a61bf63 225 mutex_lock(&data->update_lock); \
1da177e4
LT		 226 data->in_max[offset] = IN_TO_REG(val, in_scale[offset]); \
227 i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(offset), \
228 data->in_max[offset]); \
9a61bf63 229 mutex_unlock(&data->update_lock); \
1da177e4
LT		 230 return count; \
231} \
232static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
233 show_in##offset##_min, set_in##offset##_min); \
234static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
235 show_in##offset##_max, set_in##offset##_max);
236set_in(0);
237set_in(1);
238set_in(2);
239set_in(3);
240set_in(4);
241set_in(5);
242
243#define set_temp(offset) \
74880c06 244static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
1da177e4
LT		 245 size_t count) \
246{ \
247 struct i2c_client *client = to_i2c_client(dev); \
248 struct adm1025_data *data = i2c_get_clientdata(client); \
249 long val = simple_strtol(buf, NULL, 10); \
250 \
9a61bf63 251 mutex_lock(&data->update_lock); \
1da177e4
LT		 252 data->temp_min[offset-1] = TEMP_TO_REG(val); \
253 i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_LOW(offset-1), \
254 data->temp_min[offset-1]); \
9a61bf63 255 mutex_unlock(&data->update_lock); \
1da177e4
LT		 256 return count; \
257} \
74880c06 258static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
1da177e4
LT		 259 size_t count) \
260{ \
261 struct i2c_client *client = to_i2c_client(dev); \
262 struct adm1025_data *data = i2c_get_clientdata(client); \
263 long val = simple_strtol(buf, NULL, 10); \
264 \
9a61bf63 265 mutex_lock(&data->update_lock); \
1da177e4
LT		 266 data->temp_max[offset-1] = TEMP_TO_REG(val); \
267 i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_HIGH(offset-1), \
268 data->temp_max[offset-1]); \
9a61bf63 269 mutex_unlock(&data->update_lock); \
1da177e4
LT		 270 return count; \
271} \
272static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
273 show_temp##offset##_min, set_temp##offset##_min); \
274static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
275 show_temp##offset##_max, set_temp##offset##_max);
276set_temp(1);
277set_temp(2);
278
74880c06 279static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 280{
281 struct adm1025_data *data = adm1025_update_device(dev);
282 return sprintf(buf, "%u\n", data->alarms);
283}
284static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
285
74880c06 286static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 287{
288 struct adm1025_data *data = adm1025_update_device(dev);
289 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
290}
937df8df 291static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1da177e4 292
74880c06 293static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 294{
295 struct adm1025_data *data = adm1025_update_device(dev);
296 return sprintf(buf, "%u\n", data->vrm);
297}
74880c06 298static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1da177e4
LT		 299{
300 struct i2c_client *client = to_i2c_client(dev);
301 struct adm1025_data *data = i2c_get_clientdata(client);
302 data->vrm = simple_strtoul(buf, NULL, 10);
303 return count;
304}
305static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
306
307/*
308 * Real code
309 */
310
311static int adm1025_attach_adapter(struct i2c_adapter *adapter)
312{
313 if (!(adapter->class & I2C_CLASS_HWMON))
314 return 0;
2ed2dc3c 315 return i2c_probe(adapter, &addr_data, adm1025_detect);
1da177e4
LT		 316}
317
681c6f7a
MH		 318static struct attribute *adm1025_attributes[] = {
319 &dev_attr_in0_input.attr,
320 &dev_attr_in1_input.attr,
321 &dev_attr_in2_input.attr,
322 &dev_attr_in3_input.attr,
323 &dev_attr_in5_input.attr,
324 &dev_attr_in0_min.attr,
325 &dev_attr_in1_min.attr,
326 &dev_attr_in2_min.attr,
327 &dev_attr_in3_min.attr,
328 &dev_attr_in5_min.attr,
329 &dev_attr_in0_max.attr,
330 &dev_attr_in1_max.attr,
331 &dev_attr_in2_max.attr,
332 &dev_attr_in3_max.attr,
333 &dev_attr_in5_max.attr,
334 &dev_attr_temp1_input.attr,
335 &dev_attr_temp2_input.attr,
336 &dev_attr_temp1_min.attr,
337 &dev_attr_temp2_min.attr,
338 &dev_attr_temp1_max.attr,
339 &dev_attr_temp2_max.attr,
340 &dev_attr_alarms.attr,
341 &dev_attr_cpu0_vid.attr,
342 &dev_attr_vrm.attr,
343 NULL
344};
345
346static const struct attribute_group adm1025_group = {
347 .attrs = adm1025_attributes,
348};
349
350static struct attribute *adm1025_attributes_opt[] = {
351 &dev_attr_in4_input.attr,
352 &dev_attr_in4_min.attr,
353 &dev_attr_in4_max.attr,
354 NULL
355};
356
357static const struct attribute_group adm1025_group_opt = {
358 .attrs = adm1025_attributes_opt,
359};
360
1da177e4
LT		 361/*
362 * The following function does more than just detection. If detection
363 * succeeds, it also registers the new chip.
364 */
365static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind)
366{
367 struct i2c_client *new_client;
368 struct adm1025_data *data;
369 int err = 0;
370 const char *name = "";
371 u8 config;
372
373 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
374 goto exit;
375
ba9c2e8d 376 if (!(data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL))) {
1da177e4
LT		 377 err = -ENOMEM;
378 goto exit;
379 }
1da177e4
LT		 380
381 /* The common I2C client data is placed right before the
382 ADM1025-specific data. */
383 new_client = &data->client;
384 i2c_set_clientdata(new_client, data);
385 new_client->addr = address;
386 new_client->adapter = adapter;
387 new_client->driver = &adm1025_driver;
388 new_client->flags = 0;
389
390 /*
391 * Now we do the remaining detection. A negative kind means that
392 * the driver was loaded with no force parameter (default), so we
393 * must both detect and identify the chip. A zero kind means that
394 * the driver was loaded with the force parameter, the detection
395 * step shall be skipped. A positive kind means that the driver
396 * was loaded with the force parameter and a given kind of chip is
397 * requested, so both the detection and the identification steps
398 * are skipped.
399 */
400 config = i2c_smbus_read_byte_data(new_client, ADM1025_REG_CONFIG);
401 if (kind < 0) { /* detection */
402 if ((config & 0x80) != 0x00
403 || (i2c_smbus_read_byte_data(new_client,
404 ADM1025_REG_STATUS1) & 0xC0) != 0x00
405 || (i2c_smbus_read_byte_data(new_client,
406 ADM1025_REG_STATUS2) & 0xBC) != 0x00) {
407 dev_dbg(&adapter->dev,
408 "ADM1025 detection failed at 0x%02x.\n",
409 address);
410 goto exit_free;
411 }
412 }
413
414 if (kind <= 0) { /* identification */
415 u8 man_id, chip_id;
416
417 man_id = i2c_smbus_read_byte_data(new_client,
418 ADM1025_REG_MAN_ID);
419 chip_id = i2c_smbus_read_byte_data(new_client,
420 ADM1025_REG_CHIP_ID);
421
422 if (man_id == 0x41) { /* Analog Devices */
423 if ((chip_id & 0xF0) == 0x20) { /* ADM1025/ADM1025A */
424 kind = adm1025;
425 }
426 } else
427 if (man_id == 0xA1) { /* Philips */
428 if (address != 0x2E
429 && (chip_id & 0xF0) == 0x20) { /* NE1619 */
430 kind = ne1619;
431 }
432 }
433
434 if (kind <= 0) { /* identification failed */
435 dev_info(&adapter->dev,
436 "Unsupported chip (man_id=0x%02X, "
437 "chip_id=0x%02X).\n", man_id, chip_id);
438 goto exit_free;
439 }
440 }
441
442 if (kind == adm1025) {
443 name = "adm1025";
444 } else if (kind == ne1619) {
445 name = "ne1619";
446 }
447
448 /* We can fill in the remaining client fields */
449 strlcpy(new_client->name, name, I2C_NAME_SIZE);
450 data->valid = 0;
9a61bf63 451 mutex_init(&data->update_lock);
1da177e4
LT		 452
453 /* Tell the I2C layer a new client has arrived */
454 if ((err = i2c_attach_client(new_client)))
455 goto exit_free;
456
457 /* Initialize the ADM1025 chip */
458 adm1025_init_client(new_client);
459
460 /* Register sysfs hooks */
681c6f7a 461 if ((err = sysfs_create_group(&new_client->dev.kobj, &adm1025_group)))
943b0830 462 goto exit_detach;
1da177e4
LT		 463
464 /* Pin 11 is either in4 (+12V) or VID4 */
465 if (!(config & 0x20)) {
681c6f7a
MH		 466 if ((err = device_create_file(&new_client->dev,
467 &dev_attr_in4_input))
468 || (err = device_create_file(&new_client->dev,
469 &dev_attr_in4_min))
470 || (err = device_create_file(&new_client->dev,
471 &dev_attr_in4_max)))
472 goto exit_remove;
473 }
474
1beeffe4
TJ		 475 data->hwmon_dev = hwmon_device_register(&new_client->dev);
476 if (IS_ERR(data->hwmon_dev)) {
477 err = PTR_ERR(data->hwmon_dev);
681c6f7a 478 goto exit_remove;
1da177e4
LT		 479 }
480
481 return 0;
482
681c6f7a
MH		 483exit_remove:
484 sysfs_remove_group(&new_client->dev.kobj, &adm1025_group);
485 sysfs_remove_group(&new_client->dev.kobj, &adm1025_group_opt);
943b0830
MH		 486exit_detach:
487 i2c_detach_client(new_client);
1da177e4
LT		 488exit_free:
489 kfree(data);
490exit:
491 return err;
492}
493
494static void adm1025_init_client(struct i2c_client *client)
495{
496 u8 reg;
497 struct adm1025_data *data = i2c_get_clientdata(client);
498 int i;
499
303760b4 500 data->vrm = vid_which_vrm();
1da177e4
LT		 501
502 /*
503 * Set high limits
504 * Usually we avoid setting limits on driver init, but it happens
505 * that the ADM1025 comes with stupid default limits (all registers
506 * set to 0). In case the chip has not gone through any limit
507 * setting yet, we better set the high limits to the max so that
508 * no alarm triggers.
509 */
510 for (i=0; i<6; i++) {
511 reg = i2c_smbus_read_byte_data(client,
512 ADM1025_REG_IN_MAX(i));
513 if (reg == 0)
514 i2c_smbus_write_byte_data(client,
515 ADM1025_REG_IN_MAX(i),
516 0xFF);
517 }
518 for (i=0; i<2; i++) {
519 reg = i2c_smbus_read_byte_data(client,
520 ADM1025_REG_TEMP_HIGH(i));
521 if (reg == 0)
522 i2c_smbus_write_byte_data(client,
523 ADM1025_REG_TEMP_HIGH(i),
524 0x7F);
525 }
526
527 /*
528 * Start the conversions
529 */
530 reg = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG);
531 if (!(reg & 0x01))
532 i2c_smbus_write_byte_data(client, ADM1025_REG_CONFIG,
533 (reg&0x7E)|0x01);
534}
535
536static int adm1025_detach_client(struct i2c_client *client)
537{
943b0830 538 struct adm1025_data *data = i2c_get_clientdata(client);
1da177e4
LT		 539 int err;
540
1beeffe4 541 hwmon_device_unregister(data->hwmon_dev);
681c6f7a
MH		 542 sysfs_remove_group(&client->dev.kobj, &adm1025_group);
543 sysfs_remove_group(&client->dev.kobj, &adm1025_group_opt);
943b0830 544
7bef5594 545 if ((err = i2c_detach_client(client)))
1da177e4 546 return err;
1da177e4 547
943b0830 548 kfree(data);
1da177e4
LT		 549 return 0;
550}
551
552static struct adm1025_data *adm1025_update_device(struct device *dev)
553{
554 struct i2c_client *client = to_i2c_client(dev);
555 struct adm1025_data *data = i2c_get_clientdata(client);
556
9a61bf63 557 mutex_lock(&data->update_lock);
1da177e4
LT		 558
559 if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
560 int i;
561
562 dev_dbg(&client->dev, "Updating data.\n");
563 for (i=0; i<6; i++) {
564 data->in[i] = i2c_smbus_read_byte_data(client,
565 ADM1025_REG_IN(i));
566 data->in_min[i] = i2c_smbus_read_byte_data(client,
567 ADM1025_REG_IN_MIN(i));
568 data->in_max[i] = i2c_smbus_read_byte_data(client,
569 ADM1025_REG_IN_MAX(i));
570 }
571 for (i=0; i<2; i++) {
572 data->temp[i] = i2c_smbus_read_byte_data(client,
573 ADM1025_REG_TEMP(i));
574 data->temp_min[i] = i2c_smbus_read_byte_data(client,
575 ADM1025_REG_TEMP_LOW(i));
576 data->temp_max[i] = i2c_smbus_read_byte_data(client,
577 ADM1025_REG_TEMP_HIGH(i));
578 }
579 data->alarms = i2c_smbus_read_byte_data(client,
580 ADM1025_REG_STATUS1)
581 | (i2c_smbus_read_byte_data(client,
582 ADM1025_REG_STATUS2) << 8);
583 data->vid = (i2c_smbus_read_byte_data(client,
584 ADM1025_REG_VID) & 0x0f)
585 | ((i2c_smbus_read_byte_data(client,
586 ADM1025_REG_VID4) & 0x01) << 4);
587
588 data->last_updated = jiffies;
589 data->valid = 1;
590 }
591
9a61bf63 592 mutex_unlock(&data->update_lock);
1da177e4
LT		 593
594 return data;
595}
596
597static int __init sensors_adm1025_init(void)
598{
599 return i2c_add_driver(&adm1025_driver);
600}
601
602static void __exit sensors_adm1025_exit(void)
603{
604 i2c_del_driver(&adm1025_driver);
605}
606
607MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
608MODULE_DESCRIPTION("ADM1025 driver");
609MODULE_LICENSE("GPL");
610
611module_init(sensors_adm1025_init);
612module_exit(sensors_adm1025_exit);
Linux 6.x block layer and io_uring tree(s)