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path: root/drivers/hwmon/smsc47m192.c
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Diffstat (limited to 'drivers/hwmon/smsc47m192.c')
-rw-r--r--drivers/hwmon/smsc47m192.c648
1 files changed, 648 insertions, 0 deletions
diff --git a/drivers/hwmon/smsc47m192.c b/drivers/hwmon/smsc47m192.c
new file mode 100644
index 000000000000..bdc4570acf9a
--- /dev/null
+++ b/drivers/hwmon/smsc47m192.c
@@ -0,0 +1,648 @@
1/*
2 smsc47m192.c - Support for hardware monitoring block of
3 SMSC LPC47M192 and LPC47M997 Super I/O chips
4
5 Copyright (C) 2006 Hartmut Rick <linux@rick.claranet.de>
6
7 Derived from lm78.c and other chip drivers.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22*/
23
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
34/* Addresses to scan */
35static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
36
37/* Insmod parameters */
38I2C_CLIENT_INSMOD_1(smsc47m192);
39
40/* SMSC47M192 registers */
41#define SMSC47M192_REG_IN(nr) ((nr)<6 ? (0x20 + (nr)) : \
42 (0x50 + (nr) - 6))
43#define SMSC47M192_REG_IN_MAX(nr) ((nr)<6 ? (0x2b + (nr) * 2) : \
44 (0x54 + (((nr) - 6) * 2)))
45#define SMSC47M192_REG_IN_MIN(nr) ((nr)<6 ? (0x2c + (nr) * 2) : \
46 (0x55 + (((nr) - 6) * 2)))
47static u8 SMSC47M192_REG_TEMP[3] = { 0x27, 0x26, 0x52 };
48static u8 SMSC47M192_REG_TEMP_MAX[3] = { 0x39, 0x37, 0x58 };
49static u8 SMSC47M192_REG_TEMP_MIN[3] = { 0x3A, 0x38, 0x59 };
50#define SMSC47M192_REG_TEMP_OFFSET(nr) ((nr)==2 ? 0x1e : 0x1f)
51#define SMSC47M192_REG_ALARM1 0x41
52#define SMSC47M192_REG_ALARM2 0x42
53#define SMSC47M192_REG_VID 0x47
54#define SMSC47M192_REG_VID4 0x49
55#define SMSC47M192_REG_CONFIG 0x40
56#define SMSC47M192_REG_SFR 0x4f
57#define SMSC47M192_REG_COMPANY_ID 0x3e
58#define SMSC47M192_REG_VERSION 0x3f
59
60/* generalised scaling with integer rounding */
61static inline int SCALE(long val, int mul, int div)
62{
63 if (val < 0)
64 return (val * mul - div / 2) / div;
65 else
66 return (val * mul + div / 2) / div;
67}
68
69/* Conversions */
70
71/* smsc47m192 internally scales voltage measurements */
72static const u16 nom_mv[] = { 2500, 2250, 3300, 5000, 12000, 3300, 1500, 1800 };
73
74static inline unsigned int IN_FROM_REG(u8 reg, int n)
75{
76 return SCALE(reg, nom_mv[n], 192);
77}
78
79static inline u8 IN_TO_REG(unsigned long val, int n)
80{
81 return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255);
82}
83
84/* TEMP: 0.001 degC units (-128C to +127C)
85 REG: 1C/bit, two's complement */
86static inline s8 TEMP_TO_REG(int val)
87{
88 return SENSORS_LIMIT(SCALE(val, 1, 1000), -128000, 127000);
89}
90
91static inline int TEMP_FROM_REG(s8 val)
92{
93 return val * 1000;
94}
95
96struct smsc47m192_data {
97 struct i2c_client client;
98 struct class_device *class_dev;
99 struct semaphore update_lock;
100 char valid; /* !=0 if following fields are valid */
101 unsigned long last_updated; /* In jiffies */
102
103 u8 in[8]; /* Register value */
104 u8 in_max[8]; /* Register value */
105 u8 in_min[8]; /* Register value */
106 s8 temp[3]; /* Register value */
107 s8 temp_max[3]; /* Register value */
108 s8 temp_min[3]; /* Register value */
109 s8 temp_offset[3]; /* Register value */
110 u16 alarms; /* Register encoding, combined */
111 u8 vid; /* Register encoding, combined */
112 u8 vrm;
113};
114
115static int smsc47m192_attach_adapter(struct i2c_adapter *adapter);
116static int smsc47m192_detect(struct i2c_adapter *adapter, int address,
117 int kind);
118static int smsc47m192_detach_client(struct i2c_client *client);
119static struct smsc47m192_data *smsc47m192_update_device(struct device *dev);
120
121static struct i2c_driver smsc47m192_driver = {
122 .driver = {
123 .name = "smsc47m192",
124 },
125 .attach_adapter = smsc47m192_attach_adapter,
126 .detach_client = smsc47m192_detach_client,
127};
128
129/* Voltages */
130static ssize_t show_in(struct device *dev, struct device_attribute *attr,
131 char *buf)
132{
133 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
134 int nr = sensor_attr->index;
135 struct smsc47m192_data *data = smsc47m192_update_device(dev);
136 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr));
137}
138
139static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
140 char *buf)
141{
142 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
143 int nr = sensor_attr->index;
144 struct smsc47m192_data *data = smsc47m192_update_device(dev);
145 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr));
146}
147
148static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
149 char *buf)
150{
151 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
152 int nr = sensor_attr->index;
153 struct smsc47m192_data *data = smsc47m192_update_device(dev);
154 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr));
155}
156
157static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
158 const char *buf, size_t count)
159{
160 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
161 int nr = sensor_attr->index;
162 struct i2c_client *client = to_i2c_client(dev);
163 struct smsc47m192_data *data = i2c_get_clientdata(client);
164 unsigned long val = simple_strtoul(buf, NULL, 10);
165
166 down(&data->update_lock);
167 data->in_min[nr] = IN_TO_REG(val, nr);
168 i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr),
169 data->in_min[nr]);
170 up(&data->update_lock);
171 return count;
172}
173
174static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
175 const char *buf, size_t count)
176{
177 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
178 int nr = sensor_attr->index;
179 struct i2c_client *client = to_i2c_client(dev);
180 struct smsc47m192_data *data = i2c_get_clientdata(client);
181 unsigned long val = simple_strtoul(buf, NULL, 10);
182
183 down(&data->update_lock);
184 data->in_max[nr] = IN_TO_REG(val, nr);
185 i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr),
186 data->in_max[nr]);
187 up(&data->update_lock);
188 return count;
189}
190
191#define show_in_offset(offset) \
192static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
193 show_in, NULL, offset); \
194static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
195 show_in_min, set_in_min, offset); \
196static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
197 show_in_max, set_in_max, offset);
198
199show_in_offset(0)
200show_in_offset(1)
201show_in_offset(2)
202show_in_offset(3)
203show_in_offset(4)
204show_in_offset(5)
205show_in_offset(6)
206show_in_offset(7)
207
208/* Temperatures */
209static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
210 char *buf)
211{
212 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
213 int nr = sensor_attr->index;
214 struct smsc47m192_data *data = smsc47m192_update_device(dev);
215 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
216}
217
218static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
219 char *buf)
220{
221 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
222 int nr = sensor_attr->index;
223 struct smsc47m192_data *data = smsc47m192_update_device(dev);
224 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
225}
226
227static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
228 char *buf)
229{
230 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
231 int nr = sensor_attr->index;
232 struct smsc47m192_data *data = smsc47m192_update_device(dev);
233 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
234}
235
236static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
237 const char *buf, size_t count)
238{
239 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
240 int nr = sensor_attr->index;
241 struct i2c_client *client = to_i2c_client(dev);
242 struct smsc47m192_data *data = i2c_get_clientdata(client);
243 long val = simple_strtol(buf, NULL, 10);
244
245 down(&data->update_lock);
246 data->temp_min[nr] = TEMP_TO_REG(val);
247 i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN[nr],
248 data->temp_min[nr]);
249 up(&data->update_lock);
250 return count;
251}
252
253static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
254 const char *buf, size_t count)
255{
256 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
257 int nr = sensor_attr->index;
258 struct i2c_client *client = to_i2c_client(dev);
259 struct smsc47m192_data *data = i2c_get_clientdata(client);
260 long val = simple_strtol(buf, NULL, 10);
261
262 down(&data->update_lock);
263 data->temp_max[nr] = TEMP_TO_REG(val);
264 i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX[nr],
265 data->temp_max[nr]);
266 up(&data->update_lock);
267 return count;
268}
269
270static ssize_t show_temp_offset(struct device *dev, struct device_attribute
271 *attr, char *buf)
272{
273 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
274 int nr = sensor_attr->index;
275 struct smsc47m192_data *data = smsc47m192_update_device(dev);
276 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
277}
278
279static ssize_t set_temp_offset(struct device *dev, struct device_attribute
280 *attr, const char *buf, size_t count)
281{
282 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
283 int nr = sensor_attr->index;
284 struct i2c_client *client = to_i2c_client(dev);
285 struct smsc47m192_data *data = i2c_get_clientdata(client);
286 u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
287 long val = simple_strtol(buf, NULL, 10);
288
289 down(&data->update_lock);
290 data->temp_offset[nr] = TEMP_TO_REG(val);
291 if (nr>1)
292 i2c_smbus_write_byte_data(client,
293 SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]);
294 else if (data->temp_offset[nr] != 0) {
295 /* offset[0] and offset[1] share the same register,
296 SFR bit 4 activates offset[0] */
297 i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR,
298 (sfr & 0xef) | (nr==0 ? 0x10 : 0));
299 data->temp_offset[1-nr] = 0;
300 i2c_smbus_write_byte_data(client,
301 SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]);
302 } else if ((sfr & 0x10) == (nr==0 ? 0x10 : 0))
303 i2c_smbus_write_byte_data(client,
304 SMSC47M192_REG_TEMP_OFFSET(nr), 0);
305 up(&data->update_lock);
306 return count;
307}
308
309#define show_temp_index(index) \
310static SENSOR_DEVICE_ATTR(temp##index##_input, S_IRUGO, \
311 show_temp, NULL, index-1); \
312static SENSOR_DEVICE_ATTR(temp##index##_min, S_IRUGO | S_IWUSR, \
313 show_temp_min, set_temp_min, index-1); \
314static SENSOR_DEVICE_ATTR(temp##index##_max, S_IRUGO | S_IWUSR, \
315 show_temp_max, set_temp_max, index-1); \
316static SENSOR_DEVICE_ATTR(temp##index##_offset, S_IRUGO | S_IWUSR, \
317 show_temp_offset, set_temp_offset, index-1);
318
319show_temp_index(1)
320show_temp_index(2)
321show_temp_index(3)
322
323/* VID */
324static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
325 char *buf)
326{
327 struct smsc47m192_data *data = smsc47m192_update_device(dev);
328 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
329}
330static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
331
332static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
333 char *buf)
334{
335 struct smsc47m192_data *data = smsc47m192_update_device(dev);
336 return sprintf(buf, "%d\n", data->vrm);
337}
338
339static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
340 const char *buf, size_t count)
341{
342 struct i2c_client *client = to_i2c_client(dev);
343 struct smsc47m192_data *data = i2c_get_clientdata(client);
344 data->vrm = simple_strtoul(buf, NULL, 10);
345 return count;
346}
347static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
348
349/* Alarms */
350static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
351 char *buf)
352{
353 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
354 int nr = sensor_attr->index;
355 struct smsc47m192_data *data = smsc47m192_update_device(dev);
356 return sprintf(buf, "%u\n", (data->alarms & nr) ? 1 : 0);
357}
358
359static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0x0010);
360static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0x0020);
361static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0x0040);
362static SENSOR_DEVICE_ATTR(temp2_input_fault, S_IRUGO, show_alarm, NULL, 0x4000);
363static SENSOR_DEVICE_ATTR(temp3_input_fault, S_IRUGO, show_alarm, NULL, 0x8000);
364static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0x0001);
365static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0x0002);
366static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 0x0004);
367static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 0x0008);
368static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 0x0100);
369static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 0x0200);
370static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 0x0400);
371static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 0x0800);
372
373/* This function is called when:
374 * smsc47m192_driver is inserted (when this module is loaded), for each
375 available adapter
376 * when a new adapter is inserted (and smsc47m192_driver is still present) */
377static int smsc47m192_attach_adapter(struct i2c_adapter *adapter)
378{
379 if (!(adapter->class & I2C_CLASS_HWMON))
380 return 0;
381 return i2c_probe(adapter, &addr_data, smsc47m192_detect);
382}
383
384static void smsc47m192_init_client(struct i2c_client *client)
385{
386 int i;
387 u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
388 u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
389
390 /* select cycle mode (pause 1 sec between updates) */
391 i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR,
392 (sfr & 0xfd) | 0x02);
393 if (!(config & 0x01)) {
394 /* initialize alarm limits */
395 for (i=0; i<8; i++) {
396 i2c_smbus_write_byte_data(client,
397 SMSC47M192_REG_IN_MIN(i), 0);
398 i2c_smbus_write_byte_data(client,
399 SMSC47M192_REG_IN_MAX(i), 0xff);
400 }
401 for (i=0; i<3; i++) {
402 i2c_smbus_write_byte_data(client,
403 SMSC47M192_REG_TEMP_MIN[i], 0x80);
404 i2c_smbus_write_byte_data(client,
405 SMSC47M192_REG_TEMP_MAX[i], 0x7f);
406 }
407
408 /* start monitoring */
409 i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG,
410 (config & 0xf7) | 0x01);
411 }
412}
413
414/* This function is called by i2c_probe */
415static int smsc47m192_detect(struct i2c_adapter *adapter, int address,
416 int kind)
417{
418 struct i2c_client *client;
419 struct smsc47m192_data *data;
420 int err = 0;
421 int version, config;
422
423 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
424 goto exit;
425
426 if (!(data = kzalloc(sizeof(struct smsc47m192_data), GFP_KERNEL))) {
427 err = -ENOMEM;
428 goto exit;
429 }
430
431 client = &data->client;
432 i2c_set_clientdata(client, data);
433 client->addr = address;
434 client->adapter = adapter;
435 client->driver = &smsc47m192_driver;
436
437 if (kind == 0)
438 kind = smsc47m192;
439
440 /* Detection criteria from sensors_detect script */
441 if (kind < 0) {
442 if (i2c_smbus_read_byte_data(client,
443 SMSC47M192_REG_COMPANY_ID) == 0x55
444 && ((version = i2c_smbus_read_byte_data(client,
445 SMSC47M192_REG_VERSION)) & 0xf0) == 0x20
446 && (i2c_smbus_read_byte_data(client,
447 SMSC47M192_REG_VID) & 0x70) == 0x00
448 && (i2c_smbus_read_byte_data(client,
449 SMSC47M192_REG_VID4) & 0xfe) == 0x80) {
450 dev_info(&adapter->dev,
451 "found SMSC47M192 or SMSC47M997, "
452 "version 2, stepping A%d\n", version & 0x0f);
453 } else {
454 dev_dbg(&adapter->dev,
455 "SMSC47M192 detection failed at 0x%02x\n",
456 address);
457 goto exit_free;
458 }
459 }
460
461 /* Fill in the remaining client fields and put into the global list */
462 strlcpy(client->name, "smsc47m192", I2C_NAME_SIZE);
463 data->vrm = vid_which_vrm();
464 init_MUTEX(&data->update_lock);
465
466 /* Tell the I2C layer a new client has arrived */
467 if ((err = i2c_attach_client(client)))
468 goto exit_free;
469
470 /* Initialize the SMSC47M192 chip */
471 smsc47m192_init_client(client);
472
473 /* Register sysfs hooks */
474 data->class_dev = hwmon_device_register(&client->dev);
475 if (IS_ERR(data->class_dev)) {
476 err = PTR_ERR(data->class_dev);
477 goto exit_detach;
478 }
479
480 device_create_file(&client->dev, &sensor_dev_attr_in0_input.dev_attr);
481 device_create_file(&client->dev, &sensor_dev_attr_in0_min.dev_attr);
482 device_create_file(&client->dev, &sensor_dev_attr_in0_max.dev_attr);
483 device_create_file(&client->dev, &sensor_dev_attr_in0_alarm.dev_attr);
484 device_create_file(&client->dev, &sensor_dev_attr_in1_input.dev_attr);
485 device_create_file(&client->dev, &sensor_dev_attr_in1_min.dev_attr);
486 device_create_file(&client->dev, &sensor_dev_attr_in1_max.dev_attr);
487 device_create_file(&client->dev, &sensor_dev_attr_in1_alarm.dev_attr);
488 device_create_file(&client->dev, &sensor_dev_attr_in2_input.dev_attr);
489 device_create_file(&client->dev, &sensor_dev_attr_in2_min.dev_attr);
490 device_create_file(&client->dev, &sensor_dev_attr_in2_max.dev_attr);
491 device_create_file(&client->dev, &sensor_dev_attr_in2_alarm.dev_attr);
492 device_create_file(&client->dev, &sensor_dev_attr_in3_input.dev_attr);
493 device_create_file(&client->dev, &sensor_dev_attr_in3_min.dev_attr);
494 device_create_file(&client->dev, &sensor_dev_attr_in3_max.dev_attr);
495 device_create_file(&client->dev, &sensor_dev_attr_in3_alarm.dev_attr);
496
497 /* Pin 110 is either in4 (+12V) or VID4 */
498 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
499 if (!(config & 0x20)) {
500 device_create_file(&client->dev,
501 &sensor_dev_attr_in4_input.dev_attr);
502 device_create_file(&client->dev,
503 &sensor_dev_attr_in4_min.dev_attr);
504 device_create_file(&client->dev,
505 &sensor_dev_attr_in4_max.dev_attr);
506 device_create_file(&client->dev,
507 &sensor_dev_attr_in4_alarm.dev_attr);
508 }
509 device_create_file(&client->dev, &sensor_dev_attr_in5_input.dev_attr);
510 device_create_file(&client->dev, &sensor_dev_attr_in5_min.dev_attr);
511 device_create_file(&client->dev, &sensor_dev_attr_in5_max.dev_attr);
512 device_create_file(&client->dev, &sensor_dev_attr_in5_alarm.dev_attr);
513 device_create_file(&client->dev, &sensor_dev_attr_in6_input.dev_attr);
514 device_create_file(&client->dev, &sensor_dev_attr_in6_min.dev_attr);
515 device_create_file(&client->dev, &sensor_dev_attr_in6_max.dev_attr);
516 device_create_file(&client->dev, &sensor_dev_attr_in6_alarm.dev_attr);
517 device_create_file(&client->dev, &sensor_dev_attr_in7_input.dev_attr);
518 device_create_file(&client->dev, &sensor_dev_attr_in7_min.dev_attr);
519 device_create_file(&client->dev, &sensor_dev_attr_in7_max.dev_attr);
520 device_create_file(&client->dev, &sensor_dev_attr_in7_alarm.dev_attr);
521 device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr);
522 device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr);
523 device_create_file(&client->dev, &sensor_dev_attr_temp1_min.dev_attr);
524 device_create_file(&client->dev,
525 &sensor_dev_attr_temp1_offset.dev_attr);
526 device_create_file(&client->dev, &sensor_dev_attr_temp1_alarm.dev_attr);
527 device_create_file(&client->dev, &sensor_dev_attr_temp2_input.dev_attr);
528 device_create_file(&client->dev, &sensor_dev_attr_temp2_max.dev_attr);
529 device_create_file(&client->dev, &sensor_dev_attr_temp2_min.dev_attr);
530 device_create_file(&client->dev,
531 &sensor_dev_attr_temp2_offset.dev_attr);
532 device_create_file(&client->dev, &sensor_dev_attr_temp2_alarm.dev_attr);
533 device_create_file(&client->dev,
534 &sensor_dev_attr_temp2_input_fault.dev_attr);
535 device_create_file(&client->dev, &sensor_dev_attr_temp3_input.dev_attr);
536 device_create_file(&client->dev, &sensor_dev_attr_temp3_max.dev_attr);
537 device_create_file(&client->dev, &sensor_dev_attr_temp3_min.dev_attr);
538 device_create_file(&client->dev,
539 &sensor_dev_attr_temp3_offset.dev_attr);
540 device_create_file(&client->dev, &sensor_dev_attr_temp3_alarm.dev_attr);
541 device_create_file(&client->dev,
542 &sensor_dev_attr_temp3_input_fault.dev_attr);
543 device_create_file(&client->dev, &dev_attr_cpu0_vid);
544 device_create_file(&client->dev, &dev_attr_vrm);
545
546 return 0;
547
548exit_detach:
549 i2c_detach_client(client);
550exit_free:
551 kfree(data);
552exit:
553 return err;
554}
555
556static int smsc47m192_detach_client(struct i2c_client *client)
557{
558 struct smsc47m192_data *data = i2c_get_clientdata(client);
559 int err;
560
561 hwmon_device_unregister(data->class_dev);
562
563 if ((err = i2c_detach_client(client)))
564 return err;
565
566 kfree(data);
567
568 return 0;
569}
570
571static struct smsc47m192_data *smsc47m192_update_device(struct device *dev)
572{
573 struct i2c_client *client = to_i2c_client(dev);
574 struct smsc47m192_data *data = i2c_get_clientdata(client);
575 int i, config;
576
577 down(&data->update_lock);
578
579 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
580 || !data->valid) {
581 u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
582
583 dev_dbg(&client->dev, "Starting smsc47m192 update\n");
584
585 for (i = 0; i <= 7; i++) {
586 data->in[i] = i2c_smbus_read_byte_data(client,
587 SMSC47M192_REG_IN(i));
588 data->in_min[i] = i2c_smbus_read_byte_data(client,
589 SMSC47M192_REG_IN_MIN(i));
590 data->in_max[i] = i2c_smbus_read_byte_data(client,
591 SMSC47M192_REG_IN_MAX(i));
592 }
593 for (i = 0; i < 3; i++) {
594 data->temp[i] = i2c_smbus_read_byte_data(client,
595 SMSC47M192_REG_TEMP[i]);
596 data->temp_max[i] = i2c_smbus_read_byte_data(client,
597 SMSC47M192_REG_TEMP_MAX[i]);
598 data->temp_min[i] = i2c_smbus_read_byte_data(client,
599 SMSC47M192_REG_TEMP_MIN[i]);
600 }
601 for (i = 1; i < 3; i++)
602 data->temp_offset[i] = i2c_smbus_read_byte_data(client,
603 SMSC47M192_REG_TEMP_OFFSET(i));
604 /* first offset is temp_offset[0] if SFR bit 4 is set,
605 temp_offset[1] otherwise */
606 if (sfr & 0x10) {
607 data->temp_offset[0] = data->temp_offset[1];
608 data->temp_offset[1] = 0;
609 } else
610 data->temp_offset[0] = 0;
611
612 data->vid = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VID)
613 & 0x0f;
614 config = i2c_smbus_read_byte_data(client,
615 SMSC47M192_REG_CONFIG);
616 if (config & 0x20)
617 data->vid |= (i2c_smbus_read_byte_data(client,
618 SMSC47M192_REG_VID4) & 0x01) << 4;
619 data->alarms = i2c_smbus_read_byte_data(client,
620 SMSC47M192_REG_ALARM1) |
621 (i2c_smbus_read_byte_data(client,
622 SMSC47M192_REG_ALARM2) << 8);
623
624 data->last_updated = jiffies;
625 data->valid = 1;
626 }
627
628 up(&data->update_lock);
629
630 return data;
631}
632
633static int __init smsc47m192_init(void)
634{
635 return i2c_add_driver(&smsc47m192_driver);
636}
637
638static void __exit smsc47m192_exit(void)
639{
640 i2c_del_driver(&smsc47m192_driver);
641}
642
643MODULE_AUTHOR("Hartmut Rick <linux@rick.claranet.de>");
644MODULE_DESCRIPTION("SMSC47M192 driver");
645MODULE_LICENSE("GPL");
646
647module_init(smsc47m192_init);
648module_exit(smsc47m192_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-09 08:30:39 -0500