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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 */ | |
e5e9f44c | 38 | enum chips { thmc50, adm1022 }; |
f95f0b4c JD |
39 | |
40 | static unsigned short adm1022_temp3[16]; | |
41 | static unsigned int adm1022_temp3_num; | |
42 | module_param_array(adm1022_temp3, ushort, &adm1022_temp3_num, 0); | |
43 | MODULE_PARM_DESC(adm1022_temp3, "List of adapter,address pairs " | |
add77c64 KH |
44 | "to enable 3rd temperature (ADM1022 only)"); |
45 | ||
46 | /* Many THMC50 constants specified below */ | |
47 | ||
48 | /* The THMC50 registers */ | |
49 | #define THMC50_REG_CONF 0x40 | |
50 | #define THMC50_REG_COMPANY_ID 0x3E | |
51 | #define THMC50_REG_DIE_CODE 0x3F | |
52 | #define THMC50_REG_ANALOG_OUT 0x19 | |
dcf3b5fb | 53 | /* |
bba891c2 KH |
54 | * The mirror status register cannot be used as |
55 | * reading it does not clear alarms. | |
dcf3b5fb | 56 | */ |
bba891c2 | 57 | #define THMC50_REG_INTR 0x41 |
add77c64 | 58 | |
5910a9b2 TK |
59 | static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 }; |
60 | static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C }; | |
61 | static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B }; | |
84f768c1 KH |
62 | static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 }; |
63 | static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 }; | |
add77c64 KH |
64 | |
65 | #define THMC50_REG_CONF_nFANOFF 0x20 | |
84f768c1 | 66 | #define THMC50_REG_CONF_PROGRAMMED 0x08 |
add77c64 KH |
67 | |
68 | /* Each client has this additional data */ | |
69 | struct thmc50_data { | |
1beeffe4 | 70 | struct device *hwmon_dev; |
add77c64 KH |
71 | |
72 | struct mutex update_lock; | |
73 | enum chips type; | |
74 | unsigned long last_updated; /* In jiffies */ | |
75 | char has_temp3; /* !=0 if it is ADM1022 in temp3 mode */ | |
76 | char valid; /* !=0 if following fields are valid */ | |
77 | ||
78 | /* Register values */ | |
79 | s8 temp_input[3]; | |
80 | s8 temp_max[3]; | |
81 | s8 temp_min[3]; | |
84f768c1 | 82 | s8 temp_critical[3]; |
add77c64 | 83 | u8 analog_out; |
dcf3b5fb | 84 | u8 alarms; |
add77c64 KH |
85 | }; |
86 | ||
310ec792 | 87 | static int thmc50_detect(struct i2c_client *client, |
ccf37488 JD |
88 | struct i2c_board_info *info); |
89 | static int thmc50_probe(struct i2c_client *client, | |
90 | const struct i2c_device_id *id); | |
91 | static int thmc50_remove(struct i2c_client *client); | |
add77c64 KH |
92 | static void thmc50_init_client(struct i2c_client *client); |
93 | static struct thmc50_data *thmc50_update_device(struct device *dev); | |
94 | ||
ccf37488 JD |
95 | static const struct i2c_device_id thmc50_id[] = { |
96 | { "adm1022", adm1022 }, | |
97 | { "thmc50", thmc50 }, | |
98 | { } | |
99 | }; | |
100 | MODULE_DEVICE_TABLE(i2c, thmc50_id); | |
101 | ||
add77c64 | 102 | static struct i2c_driver thmc50_driver = { |
ccf37488 | 103 | .class = I2C_CLASS_HWMON, |
add77c64 KH |
104 | .driver = { |
105 | .name = "thmc50", | |
106 | }, | |
ccf37488 JD |
107 | .probe = thmc50_probe, |
108 | .remove = thmc50_remove, | |
109 | .id_table = thmc50_id, | |
110 | .detect = thmc50_detect, | |
c3813d6a | 111 | .address_list = normal_i2c, |
add77c64 KH |
112 | }; |
113 | ||
114 | static ssize_t show_analog_out(struct device *dev, | |
115 | struct device_attribute *attr, char *buf) | |
116 | { | |
117 | struct thmc50_data *data = thmc50_update_device(dev); | |
118 | return sprintf(buf, "%d\n", data->analog_out); | |
119 | } | |
120 | ||
121 | static ssize_t set_analog_out(struct device *dev, | |
122 | struct device_attribute *attr, | |
123 | const char *buf, size_t count) | |
124 | { | |
125 | struct i2c_client *client = to_i2c_client(dev); | |
126 | struct thmc50_data *data = i2c_get_clientdata(client); | |
127 | int tmp = simple_strtoul(buf, NULL, 10); | |
128 | int config; | |
129 | ||
130 | mutex_lock(&data->update_lock); | |
131 | data->analog_out = SENSORS_LIMIT(tmp, 0, 255); | |
132 | i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT, | |
133 | data->analog_out); | |
134 | ||
135 | config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); | |
136 | if (data->analog_out == 0) | |
137 | config &= ~THMC50_REG_CONF_nFANOFF; | |
138 | else | |
139 | config |= THMC50_REG_CONF_nFANOFF; | |
140 | i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config); | |
141 | ||
142 | mutex_unlock(&data->update_lock); | |
143 | return count; | |
144 | } | |
145 | ||
146 | /* There is only one PWM mode = DC */ | |
147 | static ssize_t show_pwm_mode(struct device *dev, struct device_attribute *attr, | |
148 | char *buf) | |
149 | { | |
150 | return sprintf(buf, "0\n"); | |
151 | } | |
152 | ||
153 | /* Temperatures */ | |
154 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
155 | char *buf) | |
156 | { | |
157 | int nr = to_sensor_dev_attr(attr)->index; | |
158 | struct thmc50_data *data = thmc50_update_device(dev); | |
159 | return sprintf(buf, "%d\n", data->temp_input[nr] * 1000); | |
160 | } | |
161 | ||
162 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
163 | char *buf) | |
164 | { | |
165 | int nr = to_sensor_dev_attr(attr)->index; | |
166 | struct thmc50_data *data = thmc50_update_device(dev); | |
167 | return sprintf(buf, "%d\n", data->temp_min[nr] * 1000); | |
168 | } | |
169 | ||
170 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
171 | const char *buf, size_t count) | |
172 | { | |
173 | int nr = to_sensor_dev_attr(attr)->index; | |
174 | struct i2c_client *client = to_i2c_client(dev); | |
175 | struct thmc50_data *data = i2c_get_clientdata(client); | |
176 | int val = simple_strtol(buf, NULL, 10); | |
177 | ||
178 | mutex_lock(&data->update_lock); | |
179 | data->temp_min[nr] = SENSORS_LIMIT(val / 1000, -128, 127); | |
180 | i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MIN[nr], | |
181 | data->temp_min[nr]); | |
182 | mutex_unlock(&data->update_lock); | |
183 | return count; | |
184 | } | |
185 | ||
186 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
187 | char *buf) | |
188 | { | |
189 | int nr = to_sensor_dev_attr(attr)->index; | |
190 | struct thmc50_data *data = thmc50_update_device(dev); | |
191 | return sprintf(buf, "%d\n", data->temp_max[nr] * 1000); | |
192 | } | |
193 | ||
194 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
195 | const char *buf, size_t count) | |
196 | { | |
197 | int nr = to_sensor_dev_attr(attr)->index; | |
198 | struct i2c_client *client = to_i2c_client(dev); | |
199 | struct thmc50_data *data = i2c_get_clientdata(client); | |
200 | int val = simple_strtol(buf, NULL, 10); | |
201 | ||
202 | mutex_lock(&data->update_lock); | |
203 | data->temp_max[nr] = SENSORS_LIMIT(val / 1000, -128, 127); | |
204 | i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MAX[nr], | |
205 | data->temp_max[nr]); | |
206 | mutex_unlock(&data->update_lock); | |
207 | return count; | |
208 | } | |
209 | ||
84f768c1 KH |
210 | static ssize_t show_temp_critical(struct device *dev, |
211 | struct device_attribute *attr, | |
212 | char *buf) | |
213 | { | |
214 | int nr = to_sensor_dev_attr(attr)->index; | |
215 | struct thmc50_data *data = thmc50_update_device(dev); | |
216 | return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000); | |
217 | } | |
218 | ||
dcf3b5fb KH |
219 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
220 | char *buf) | |
221 | { | |
222 | int index = to_sensor_dev_attr(attr)->index; | |
223 | struct thmc50_data *data = thmc50_update_device(dev); | |
224 | ||
225 | return sprintf(buf, "%u\n", (data->alarms >> index) & 1); | |
226 | } | |
227 | ||
add77c64 KH |
228 | #define temp_reg(offset) \ |
229 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \ | |
230 | NULL, offset - 1); \ | |
231 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
232 | show_temp_min, set_temp_min, offset - 1); \ | |
233 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
84f768c1 KH |
234 | show_temp_max, set_temp_max, offset - 1); \ |
235 | static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO, \ | |
236 | show_temp_critical, NULL, offset - 1); | |
add77c64 KH |
237 | |
238 | temp_reg(1); | |
239 | temp_reg(2); | |
240 | temp_reg(3); | |
241 | ||
dcf3b5fb KH |
242 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0); |
243 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
244 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1); | |
245 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 7); | |
246 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 2); | |
247 | ||
add77c64 KH |
248 | static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_analog_out, |
249 | set_analog_out, 0); | |
250 | static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0); | |
251 | ||
252 | static struct attribute *thmc50_attributes[] = { | |
253 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
254 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
255 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
84f768c1 | 256 | &sensor_dev_attr_temp1_crit.dev_attr.attr, |
dcf3b5fb | 257 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
add77c64 KH |
258 | &sensor_dev_attr_temp2_max.dev_attr.attr, |
259 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
260 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
84f768c1 | 261 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
dcf3b5fb KH |
262 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
263 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
add77c64 KH |
264 | &sensor_dev_attr_pwm1.dev_attr.attr, |
265 | &sensor_dev_attr_pwm1_mode.dev_attr.attr, | |
266 | NULL | |
267 | }; | |
268 | ||
269 | static const struct attribute_group thmc50_group = { | |
270 | .attrs = thmc50_attributes, | |
271 | }; | |
272 | ||
273 | /* for ADM1022 3rd temperature mode */ | |
894c00cf | 274 | static struct attribute *temp3_attributes[] = { |
add77c64 KH |
275 | &sensor_dev_attr_temp3_max.dev_attr.attr, |
276 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
277 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
84f768c1 | 278 | &sensor_dev_attr_temp3_crit.dev_attr.attr, |
dcf3b5fb KH |
279 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
280 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
add77c64 KH |
281 | NULL |
282 | }; | |
283 | ||
894c00cf JD |
284 | static const struct attribute_group temp3_group = { |
285 | .attrs = temp3_attributes, | |
add77c64 KH |
286 | }; |
287 | ||
ccf37488 | 288 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 289 | static int thmc50_detect(struct i2c_client *client, |
ccf37488 | 290 | struct i2c_board_info *info) |
add77c64 KH |
291 | { |
292 | unsigned company; | |
293 | unsigned revision; | |
294 | unsigned config; | |
ccf37488 | 295 | struct i2c_adapter *adapter = client->adapter; |
cc28a610 | 296 | const char *type_name; |
add77c64 KH |
297 | |
298 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
299 | pr_debug("thmc50: detect failed, " | |
300 | "smbus byte data not supported!\n"); | |
ccf37488 | 301 | return -ENODEV; |
add77c64 KH |
302 | } |
303 | ||
add77c64 KH |
304 | pr_debug("thmc50: Probing for THMC50 at 0x%2X on bus %d\n", |
305 | client->addr, i2c_adapter_id(client->adapter)); | |
306 | ||
add77c64 KH |
307 | company = i2c_smbus_read_byte_data(client, THMC50_REG_COMPANY_ID); |
308 | revision = i2c_smbus_read_byte_data(client, THMC50_REG_DIE_CODE); | |
309 | config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); | |
52df6440 JD |
310 | if (revision < 0xc0 || (config & 0x10)) |
311 | return -ENODEV; | |
add77c64 | 312 | |
52df6440 | 313 | if (company == 0x41) { |
add77c64 KH |
314 | int id = i2c_adapter_id(client->adapter); |
315 | int i; | |
316 | ||
317 | type_name = "adm1022"; | |
add77c64 KH |
318 | for (i = 0; i + 1 < adm1022_temp3_num; i += 2) |
319 | if (adm1022_temp3[i] == id && | |
ccf37488 | 320 | adm1022_temp3[i + 1] == client->addr) { |
add77c64 | 321 | /* enable 2nd remote temp */ |
ccf37488 JD |
322 | config |= (1 << 7); |
323 | i2c_smbus_write_byte_data(client, | |
324 | THMC50_REG_CONF, | |
325 | config); | |
add77c64 KH |
326 | break; |
327 | } | |
52df6440 | 328 | } else if (company == 0x49) { |
cc28a610 | 329 | type_name = "thmc50"; |
52df6440 JD |
330 | } else { |
331 | pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n"); | |
332 | return -ENODEV; | |
add77c64 | 333 | } |
52df6440 | 334 | |
cc28a610 JD |
335 | pr_debug("thmc50: Detected %s (version %x, revision %x)\n", |
336 | type_name, (revision >> 4) - 0xc, revision & 0xf); | |
add77c64 | 337 | |
ccf37488 | 338 | strlcpy(info->type, type_name, I2C_NAME_SIZE); |
add77c64 | 339 | |
ccf37488 JD |
340 | return 0; |
341 | } | |
342 | ||
343 | static int thmc50_probe(struct i2c_client *client, | |
344 | const struct i2c_device_id *id) | |
345 | { | |
346 | struct thmc50_data *data; | |
347 | int err; | |
348 | ||
349 | data = kzalloc(sizeof(struct thmc50_data), GFP_KERNEL); | |
350 | if (!data) { | |
351 | pr_debug("thmc50: detect failed, kzalloc failed!\n"); | |
352 | err = -ENOMEM; | |
353 | goto exit; | |
354 | } | |
355 | ||
356 | i2c_set_clientdata(client, data); | |
357 | data->type = id->driver_data; | |
358 | mutex_init(&data->update_lock); | |
add77c64 KH |
359 | |
360 | thmc50_init_client(client); | |
361 | ||
362 | /* Register sysfs hooks */ | |
363 | if ((err = sysfs_create_group(&client->dev.kobj, &thmc50_group))) | |
ccf37488 | 364 | goto exit_free; |
add77c64 KH |
365 | |
366 | /* Register ADM1022 sysfs hooks */ | |
894c00cf | 367 | if (data->has_temp3) |
add77c64 | 368 | if ((err = sysfs_create_group(&client->dev.kobj, |
894c00cf | 369 | &temp3_group))) |
add77c64 KH |
370 | goto exit_remove_sysfs_thmc50; |
371 | ||
372 | /* Register a new directory entry with module sensors */ | |
1beeffe4 TJ |
373 | data->hwmon_dev = hwmon_device_register(&client->dev); |
374 | if (IS_ERR(data->hwmon_dev)) { | |
375 | err = PTR_ERR(data->hwmon_dev); | |
add77c64 KH |
376 | goto exit_remove_sysfs; |
377 | } | |
378 | ||
379 | return 0; | |
380 | ||
381 | exit_remove_sysfs: | |
894c00cf JD |
382 | if (data->has_temp3) |
383 | sysfs_remove_group(&client->dev.kobj, &temp3_group); | |
add77c64 KH |
384 | exit_remove_sysfs_thmc50: |
385 | sysfs_remove_group(&client->dev.kobj, &thmc50_group); | |
add77c64 KH |
386 | exit_free: |
387 | kfree(data); | |
388 | exit: | |
389 | return err; | |
390 | } | |
391 | ||
ccf37488 | 392 | static int thmc50_remove(struct i2c_client *client) |
add77c64 KH |
393 | { |
394 | struct thmc50_data *data = i2c_get_clientdata(client); | |
add77c64 | 395 | |
1beeffe4 | 396 | hwmon_device_unregister(data->hwmon_dev); |
add77c64 | 397 | sysfs_remove_group(&client->dev.kobj, &thmc50_group); |
894c00cf JD |
398 | if (data->has_temp3) |
399 | sysfs_remove_group(&client->dev.kobj, &temp3_group); | |
add77c64 | 400 | |
add77c64 KH |
401 | kfree(data); |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | static void thmc50_init_client(struct i2c_client *client) | |
407 | { | |
408 | struct thmc50_data *data = i2c_get_clientdata(client); | |
409 | int config; | |
410 | ||
411 | data->analog_out = i2c_smbus_read_byte_data(client, | |
412 | THMC50_REG_ANALOG_OUT); | |
413 | /* set up to at least 1 */ | |
414 | if (data->analog_out == 0) { | |
415 | data->analog_out = 1; | |
416 | i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT, | |
417 | data->analog_out); | |
418 | } | |
419 | config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); | |
420 | config |= 0x1; /* start the chip if it is in standby mode */ | |
ccf37488 JD |
421 | if (data->type == adm1022 && (config & (1 << 7))) |
422 | data->has_temp3 = 1; | |
add77c64 KH |
423 | i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config); |
424 | } | |
425 | ||
426 | static struct thmc50_data *thmc50_update_device(struct device *dev) | |
427 | { | |
428 | struct i2c_client *client = to_i2c_client(dev); | |
429 | struct thmc50_data *data = i2c_get_clientdata(client); | |
430 | int timeout = HZ / 5 + (data->type == thmc50 ? HZ : 0); | |
431 | ||
432 | mutex_lock(&data->update_lock); | |
433 | ||
434 | if (time_after(jiffies, data->last_updated + timeout) | |
435 | || !data->valid) { | |
436 | ||
437 | int temps = data->has_temp3 ? 3 : 2; | |
438 | int i; | |
84f768c1 KH |
439 | int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF); |
440 | ||
441 | prog &= THMC50_REG_CONF_PROGRAMMED; | |
442 | ||
add77c64 KH |
443 | for (i = 0; i < temps; i++) { |
444 | data->temp_input[i] = i2c_smbus_read_byte_data(client, | |
445 | THMC50_REG_TEMP[i]); | |
446 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
447 | THMC50_REG_TEMP_MAX[i]); | |
448 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
449 | THMC50_REG_TEMP_MIN[i]); | |
84f768c1 KH |
450 | data->temp_critical[i] = |
451 | i2c_smbus_read_byte_data(client, | |
452 | prog ? THMC50_REG_TEMP_CRITICAL[i] | |
453 | : THMC50_REG_TEMP_DEFAULT[i]); | |
add77c64 KH |
454 | } |
455 | data->analog_out = | |
456 | i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT); | |
dcf3b5fb | 457 | data->alarms = |
bba891c2 | 458 | i2c_smbus_read_byte_data(client, THMC50_REG_INTR); |
add77c64 KH |
459 | data->last_updated = jiffies; |
460 | data->valid = 1; | |
461 | } | |
462 | ||
463 | mutex_unlock(&data->update_lock); | |
464 | ||
465 | return data; | |
466 | } | |
467 | ||
468 | static int __init sm_thmc50_init(void) | |
469 | { | |
470 | return i2c_add_driver(&thmc50_driver); | |
471 | } | |
472 | ||
473 | static void __exit sm_thmc50_exit(void) | |
474 | { | |
475 | i2c_del_driver(&thmc50_driver); | |
476 | } | |
477 | ||
478 | MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>"); | |
479 | MODULE_DESCRIPTION("THMC50 driver"); | |
480 | ||
481 | module_init(sm_thmc50_init); | |
482 | module_exit(sm_thmc50_exit); |