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add77c64 KH |
1 | /* |
2 | thmc50.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring | |
4 | Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl> | |
5 | Based on 2.4 driver by Frodo Looijaard <frodol@dds.nl> and | |
6 | Philip Edelbrock <phil@netroedge.com> | |
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 | #include <linux/module.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/i2c.h> | |
27 | #include <linux/hwmon.h> | |
28 | #include <linux/hwmon-sysfs.h> | |
29 | #include <linux/err.h> | |
30 | #include <linux/mutex.h> | |
31 | ||
32 | MODULE_LICENSE("GPL"); | |
33 | ||
34 | /* Addresses to scan */ | |
25e9c86d | 35 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
add77c64 KH |
36 | |
37 | /* Insmod parameters */ | |
38 | I2C_CLIENT_INSMOD_2(thmc50, adm1022); | |
39 | I2C_CLIENT_MODULE_PARM(adm1022_temp3, "List of adapter,address pairs " | |
40 | "to enable 3rd temperature (ADM1022 only)"); | |
41 | ||
42 | /* Many THMC50 constants specified below */ | |
43 | ||
44 | /* The THMC50 registers */ | |
45 | #define THMC50_REG_CONF 0x40 | |
46 | #define THMC50_REG_COMPANY_ID 0x3E | |
47 | #define THMC50_REG_DIE_CODE 0x3F | |
48 | #define THMC50_REG_ANALOG_OUT 0x19 | |
dcf3b5fb | 49 | /* |
bba891c2 KH |
50 | * The mirror status register cannot be used as |
51 | * reading it does not clear alarms. | |
dcf3b5fb | 52 | */ |
bba891c2 | 53 | #define THMC50_REG_INTR 0x41 |
add77c64 | 54 | |
5910a9b2 TK |
55 | static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 }; |
56 | static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C }; | |
57 | static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B }; | |
84f768c1 KH |
58 | static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 }; |
59 | static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 }; | |
add77c64 KH |
60 | |
61 | #define THMC50_REG_CONF_nFANOFF 0x20 | |
84f768c1 | 62 | #define THMC50_REG_CONF_PROGRAMMED 0x08 |
add77c64 KH |
63 | |
64 | /* Each client has this additional data */ | |
65 | struct thmc50_data { | |
1beeffe4 | 66 | struct device *hwmon_dev; |
add77c64 KH |
67 | |
68 | struct mutex update_lock; | |
69 | enum chips type; | |
70 | unsigned long last_updated; /* In jiffies */ | |
71 | char has_temp3; /* !=0 if it is ADM1022 in temp3 mode */ | |
72 | char valid; /* !=0 if following fields are valid */ | |
73 | ||
74 | /* Register values */ | |
75 | s8 temp_input[3]; | |
76 | s8 temp_max[3]; | |
77 | s8 temp_min[3]; | |
84f768c1 | 78 | s8 temp_critical[3]; |
add77c64 | 79 | u8 analog_out; |
dcf3b5fb | 80 | u8 alarms; |
add77c64 KH |
81 | }; |
82 | ||
ccf37488 JD |
83 | static int thmc50_detect(struct i2c_client *client, int kind, |
84 | struct i2c_board_info *info); | |
85 | static int thmc50_probe(struct i2c_client *client, | |
86 | const struct i2c_device_id *id); | |
87 | static int thmc50_remove(struct i2c_client *client); | |
add77c64 KH |
88 | static void thmc50_init_client(struct i2c_client *client); |
89 | static struct thmc50_data *thmc50_update_device(struct device *dev); | |
90 | ||
ccf37488 JD |
91 | static const struct i2c_device_id thmc50_id[] = { |
92 | { "adm1022", adm1022 }, | |
93 | { "thmc50", thmc50 }, | |
94 | { } | |
95 | }; | |
96 | MODULE_DEVICE_TABLE(i2c, thmc50_id); | |
97 | ||
add77c64 | 98 | static struct i2c_driver thmc50_driver = { |
ccf37488 | 99 | .class = I2C_CLASS_HWMON, |
add77c64 KH |
100 | .driver = { |
101 | .name = "thmc50", | |
102 | }, | |
ccf37488 JD |
103 | .probe = thmc50_probe, |
104 | .remove = thmc50_remove, | |
105 | .id_table = thmc50_id, | |
106 | .detect = thmc50_detect, | |
107 | .address_data = &addr_data, | |
add77c64 KH |
108 | }; |
109 | ||
110 | static ssize_t show_analog_out(struct device *dev, | |
111 | struct device_attribute *attr, char *buf) | |
112 | { | |
113 | struct thmc50_data *data = thmc50_update_device(dev); | |
114 | return sprintf(buf, "%d\n", data->analog_out); | |
115 | } | |
116 | ||
117 | static ssize_t set_analog_out(struct device *dev, | |
118 | struct device_attribute *attr, | |
119 | const char *buf, size_t count) | |
120 | { | |
121 | struct i2c_client *client = to_i2c_client(dev); | |
122 | struct thmc50_data *data = i2c_get_clientdata(client); | |
123 | int tmp = simple_strtoul(buf, NULL, 10); | |
124 | int config; | |
125 | ||
126 | mutex_lock(&data->update_lock); | |
127 | data->analog_out = SENSORS_LIMIT(tmp, 0, 255); | |
128 | i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT, | |
129 | data->analog_out); | |
130 | ||
131 | config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); | |
132 | if (data->analog_out == 0) | |
133 | config &= ~THMC50_REG_CONF_nFANOFF; | |
134 | else | |
135 | config |= THMC50_REG_CONF_nFANOFF; | |
136 | i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config); | |
137 | ||
138 | mutex_unlock(&data->update_lock); | |
139 | return count; | |
140 | } | |
141 | ||
142 | /* There is only one PWM mode = DC */ | |
143 | static ssize_t show_pwm_mode(struct device *dev, struct device_attribute *attr, | |
144 | char *buf) | |
145 | { | |
146 | return sprintf(buf, "0\n"); | |
147 | } | |
148 | ||
149 | /* Temperatures */ | |
150 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
151 | char *buf) | |
152 | { | |
153 | int nr = to_sensor_dev_attr(attr)->index; | |
154 | struct thmc50_data *data = thmc50_update_device(dev); | |
155 | return sprintf(buf, "%d\n", data->temp_input[nr] * 1000); | |
156 | } | |
157 | ||
158 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
159 | char *buf) | |
160 | { | |
161 | int nr = to_sensor_dev_attr(attr)->index; | |
162 | struct thmc50_data *data = thmc50_update_device(dev); | |
163 | return sprintf(buf, "%d\n", data->temp_min[nr] * 1000); | |
164 | } | |
165 | ||
166 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
167 | const char *buf, size_t count) | |
168 | { | |
169 | int nr = to_sensor_dev_attr(attr)->index; | |
170 | struct i2c_client *client = to_i2c_client(dev); | |
171 | struct thmc50_data *data = i2c_get_clientdata(client); | |
172 | int val = simple_strtol(buf, NULL, 10); | |
173 | ||
174 | mutex_lock(&data->update_lock); | |
175 | data->temp_min[nr] = SENSORS_LIMIT(val / 1000, -128, 127); | |
176 | i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MIN[nr], | |
177 | data->temp_min[nr]); | |
178 | mutex_unlock(&data->update_lock); | |
179 | return count; | |
180 | } | |
181 | ||
182 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
183 | char *buf) | |
184 | { | |
185 | int nr = to_sensor_dev_attr(attr)->index; | |
186 | struct thmc50_data *data = thmc50_update_device(dev); | |
187 | return sprintf(buf, "%d\n", data->temp_max[nr] * 1000); | |
188 | } | |
189 | ||
190 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
191 | const char *buf, size_t count) | |
192 | { | |
193 | int nr = to_sensor_dev_attr(attr)->index; | |
194 | struct i2c_client *client = to_i2c_client(dev); | |
195 | struct thmc50_data *data = i2c_get_clientdata(client); | |
196 | int val = simple_strtol(buf, NULL, 10); | |
197 | ||
198 | mutex_lock(&data->update_lock); | |
199 | data->temp_max[nr] = SENSORS_LIMIT(val / 1000, -128, 127); | |
200 | i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MAX[nr], | |
201 | data->temp_max[nr]); | |
202 | mutex_unlock(&data->update_lock); | |
203 | return count; | |
204 | } | |
205 | ||
84f768c1 KH |
206 | static ssize_t show_temp_critical(struct device *dev, |
207 | struct device_attribute *attr, | |
208 | char *buf) | |
209 | { | |
210 | int nr = to_sensor_dev_attr(attr)->index; | |
211 | struct thmc50_data *data = thmc50_update_device(dev); | |
212 | return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000); | |
213 | } | |
214 | ||
dcf3b5fb KH |
215 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
216 | char *buf) | |
217 | { | |
218 | int index = to_sensor_dev_attr(attr)->index; | |
219 | struct thmc50_data *data = thmc50_update_device(dev); | |
220 | ||
221 | return sprintf(buf, "%u\n", (data->alarms >> index) & 1); | |
222 | } | |
223 | ||
add77c64 KH |
224 | #define temp_reg(offset) \ |
225 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \ | |
226 | NULL, offset - 1); \ | |
227 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
228 | show_temp_min, set_temp_min, offset - 1); \ | |
229 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
84f768c1 KH |
230 | show_temp_max, set_temp_max, offset - 1); \ |
231 | static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO, \ | |
232 | show_temp_critical, NULL, offset - 1); | |
add77c64 KH |
233 | |
234 | temp_reg(1); | |
235 | temp_reg(2); | |
236 | temp_reg(3); | |
237 | ||
dcf3b5fb KH |
238 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0); |
239 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
240 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1); | |
241 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 7); | |
242 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 2); | |
243 | ||
add77c64 KH |
244 | static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_analog_out, |
245 | set_analog_out, 0); | |
246 | static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0); | |
247 | ||
248 | static struct attribute *thmc50_attributes[] = { | |
249 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
250 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
251 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
84f768c1 | 252 | &sensor_dev_attr_temp1_crit.dev_attr.attr, |
dcf3b5fb | 253 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
add77c64 KH |
254 | &sensor_dev_attr_temp2_max.dev_attr.attr, |
255 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
256 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
84f768c1 | 257 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
dcf3b5fb KH |
258 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
259 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
add77c64 KH |
260 | &sensor_dev_attr_pwm1.dev_attr.attr, |
261 | &sensor_dev_attr_pwm1_mode.dev_attr.attr, | |
262 | NULL | |
263 | }; | |
264 | ||
265 | static const struct attribute_group thmc50_group = { | |
266 | .attrs = thmc50_attributes, | |
267 | }; | |
268 | ||
269 | /* for ADM1022 3rd temperature mode */ | |
894c00cf | 270 | static struct attribute *temp3_attributes[] = { |
add77c64 KH |
271 | &sensor_dev_attr_temp3_max.dev_attr.attr, |
272 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
273 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
84f768c1 | 274 | &sensor_dev_attr_temp3_crit.dev_attr.attr, |
dcf3b5fb KH |
275 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
276 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
add77c64 KH |
277 | NULL |
278 | }; | |
279 | ||
894c00cf JD |
280 | static const struct attribute_group temp3_group = { |
281 | .attrs = temp3_attributes, | |
add77c64 KH |
282 | }; |
283 | ||
ccf37488 JD |
284 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
285 | static int thmc50_detect(struct i2c_client *client, int kind, | |
286 | struct i2c_board_info *info) | |
add77c64 KH |
287 | { |
288 | unsigned company; | |
289 | unsigned revision; | |
290 | unsigned config; | |
ccf37488 | 291 | struct i2c_adapter *adapter = client->adapter; |
add77c64 | 292 | int err = 0; |
cc28a610 | 293 | const char *type_name; |
add77c64 KH |
294 | |
295 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
296 | pr_debug("thmc50: detect failed, " | |
297 | "smbus byte data not supported!\n"); | |
ccf37488 | 298 | return -ENODEV; |
add77c64 KH |
299 | } |
300 | ||
add77c64 KH |
301 | pr_debug("thmc50: Probing for THMC50 at 0x%2X on bus %d\n", |
302 | client->addr, i2c_adapter_id(client->adapter)); | |
303 | ||
304 | /* Now, we do the remaining detection. */ | |
305 | company = i2c_smbus_read_byte_data(client, THMC50_REG_COMPANY_ID); | |
306 | revision = i2c_smbus_read_byte_data(client, THMC50_REG_DIE_CODE); | |
307 | config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); | |
308 | ||
309 | if (kind == 0) | |
310 | kind = thmc50; | |
311 | else if (kind < 0) { | |
312 | err = -ENODEV; | |
313 | if (revision >= 0xc0 && ((config & 0x10) == 0)) { | |
314 | if (company == 0x49) { | |
315 | kind = thmc50; | |
316 | err = 0; | |
317 | } else if (company == 0x41) { | |
318 | kind = adm1022; | |
319 | err = 0; | |
320 | } | |
321 | } | |
322 | } | |
323 | if (err == -ENODEV) { | |
324 | pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n"); | |
ccf37488 | 325 | return err; |
add77c64 | 326 | } |
add77c64 | 327 | |
cc28a610 | 328 | if (kind == adm1022) { |
add77c64 KH |
329 | int id = i2c_adapter_id(client->adapter); |
330 | int i; | |
331 | ||
332 | type_name = "adm1022"; | |
add77c64 KH |
333 | for (i = 0; i + 1 < adm1022_temp3_num; i += 2) |
334 | if (adm1022_temp3[i] == id && | |
ccf37488 | 335 | adm1022_temp3[i + 1] == client->addr) { |
add77c64 | 336 | /* enable 2nd remote temp */ |
ccf37488 JD |
337 | config |= (1 << 7); |
338 | i2c_smbus_write_byte_data(client, | |
339 | THMC50_REG_CONF, | |
340 | config); | |
add77c64 KH |
341 | break; |
342 | } | |
cc28a610 JD |
343 | } else { |
344 | type_name = "thmc50"; | |
add77c64 | 345 | } |
cc28a610 JD |
346 | pr_debug("thmc50: Detected %s (version %x, revision %x)\n", |
347 | type_name, (revision >> 4) - 0xc, revision & 0xf); | |
add77c64 | 348 | |
ccf37488 | 349 | strlcpy(info->type, type_name, I2C_NAME_SIZE); |
add77c64 | 350 | |
ccf37488 JD |
351 | return 0; |
352 | } | |
353 | ||
354 | static int thmc50_probe(struct i2c_client *client, | |
355 | const struct i2c_device_id *id) | |
356 | { | |
357 | struct thmc50_data *data; | |
358 | int err; | |
359 | ||
360 | data = kzalloc(sizeof(struct thmc50_data), GFP_KERNEL); | |
361 | if (!data) { | |
362 | pr_debug("thmc50: detect failed, kzalloc failed!\n"); | |
363 | err = -ENOMEM; | |
364 | goto exit; | |
365 | } | |
366 | ||
367 | i2c_set_clientdata(client, data); | |
368 | data->type = id->driver_data; | |
369 | mutex_init(&data->update_lock); | |
add77c64 KH |
370 | |
371 | thmc50_init_client(client); | |
372 | ||
373 | /* Register sysfs hooks */ | |
374 | if ((err = sysfs_create_group(&client->dev.kobj, &thmc50_group))) | |
ccf37488 | 375 | goto exit_free; |
add77c64 KH |
376 | |
377 | /* Register ADM1022 sysfs hooks */ | |
894c00cf | 378 | if (data->has_temp3) |
add77c64 | 379 | if ((err = sysfs_create_group(&client->dev.kobj, |
894c00cf | 380 | &temp3_group))) |
add77c64 KH |
381 | goto exit_remove_sysfs_thmc50; |
382 | ||
383 | /* Register a new directory entry with module sensors */ | |
1beeffe4 TJ |
384 | data->hwmon_dev = hwmon_device_register(&client->dev); |
385 | if (IS_ERR(data->hwmon_dev)) { | |
386 | err = PTR_ERR(data->hwmon_dev); | |
add77c64 KH |
387 | goto exit_remove_sysfs; |
388 | } | |
389 | ||
390 | return 0; | |
391 | ||
392 | exit_remove_sysfs: | |
894c00cf JD |
393 | if (data->has_temp3) |
394 | sysfs_remove_group(&client->dev.kobj, &temp3_group); | |
add77c64 KH |
395 | exit_remove_sysfs_thmc50: |
396 | sysfs_remove_group(&client->dev.kobj, &thmc50_group); | |
add77c64 KH |
397 | exit_free: |
398 | kfree(data); | |
399 | exit: | |
400 | return err; | |
401 | } | |
402 | ||
ccf37488 | 403 | static int thmc50_remove(struct i2c_client *client) |
add77c64 KH |
404 | { |
405 | struct thmc50_data *data = i2c_get_clientdata(client); | |
add77c64 | 406 | |
1beeffe4 | 407 | hwmon_device_unregister(data->hwmon_dev); |
add77c64 | 408 | sysfs_remove_group(&client->dev.kobj, &thmc50_group); |
894c00cf JD |
409 | if (data->has_temp3) |
410 | sysfs_remove_group(&client->dev.kobj, &temp3_group); | |
add77c64 | 411 | |
add77c64 KH |
412 | kfree(data); |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | static void thmc50_init_client(struct i2c_client *client) | |
418 | { | |
419 | struct thmc50_data *data = i2c_get_clientdata(client); | |
420 | int config; | |
421 | ||
422 | data->analog_out = i2c_smbus_read_byte_data(client, | |
423 | THMC50_REG_ANALOG_OUT); | |
424 | /* set up to at least 1 */ | |
425 | if (data->analog_out == 0) { | |
426 | data->analog_out = 1; | |
427 | i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT, | |
428 | data->analog_out); | |
429 | } | |
430 | config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); | |
431 | config |= 0x1; /* start the chip if it is in standby mode */ | |
ccf37488 JD |
432 | if (data->type == adm1022 && (config & (1 << 7))) |
433 | data->has_temp3 = 1; | |
add77c64 KH |
434 | i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config); |
435 | } | |
436 | ||
437 | static struct thmc50_data *thmc50_update_device(struct device *dev) | |
438 | { | |
439 | struct i2c_client *client = to_i2c_client(dev); | |
440 | struct thmc50_data *data = i2c_get_clientdata(client); | |
441 | int timeout = HZ / 5 + (data->type == thmc50 ? HZ : 0); | |
442 | ||
443 | mutex_lock(&data->update_lock); | |
444 | ||
445 | if (time_after(jiffies, data->last_updated + timeout) | |
446 | || !data->valid) { | |
447 | ||
448 | int temps = data->has_temp3 ? 3 : 2; | |
449 | int i; | |
84f768c1 KH |
450 | int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); |
451 | ||
452 | prog &= THMC50_REG_CONF_PROGRAMMED; | |
453 | ||
add77c64 KH |
454 | for (i = 0; i < temps; i++) { |
455 | data->temp_input[i] = i2c_smbus_read_byte_data(client, | |
456 | THMC50_REG_TEMP[i]); | |
457 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
458 | THMC50_REG_TEMP_MAX[i]); | |
459 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
460 | THMC50_REG_TEMP_MIN[i]); | |
84f768c1 KH |
461 | data->temp_critical[i] = |
462 | i2c_smbus_read_byte_data(client, | |
463 | prog ? THMC50_REG_TEMP_CRITICAL[i] | |
464 | : THMC50_REG_TEMP_DEFAULT[i]); | |
add77c64 KH |
465 | } |
466 | data->analog_out = | |
467 | i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT); | |
dcf3b5fb | 468 | data->alarms = |
bba891c2 | 469 | i2c_smbus_read_byte_data(client, THMC50_REG_INTR); |
add77c64 KH |
470 | data->last_updated = jiffies; |
471 | data->valid = 1; | |
472 | } | |
473 | ||
474 | mutex_unlock(&data->update_lock); | |
475 | ||
476 | return data; | |
477 | } | |
478 | ||
479 | static int __init sm_thmc50_init(void) | |
480 | { | |
481 | return i2c_add_driver(&thmc50_driver); | |
482 | } | |
483 | ||
484 | static void __exit sm_thmc50_exit(void) | |
485 | { | |
486 | i2c_del_driver(&thmc50_driver); | |
487 | } | |
488 | ||
489 | MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>"); | |
490 | MODULE_DESCRIPTION("THMC50 driver"); | |
491 | ||
492 | module_init(sm_thmc50_init); | |
493 | module_exit(sm_thmc50_exit); |