Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | adm1021.c - Part of lm_sensors, Linux kernel modules for hardware | |
c83c41e4 | 3 | monitoring |
1da177e4 LT |
4 | Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and |
5 | Philip Edelbrock <phil@netroedge.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
1da177e4 LT |
22 | #include <linux/module.h> |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/jiffies.h> | |
26 | #include <linux/i2c.h> | |
943b0830 | 27 | #include <linux/hwmon.h> |
a8d6646e | 28 | #include <linux/hwmon-sysfs.h> |
943b0830 | 29 | #include <linux/err.h> |
9a61bf63 | 30 | #include <linux/mutex.h> |
1da177e4 LT |
31 | |
32 | ||
33 | /* Addresses to scan */ | |
25e9c86d MH |
34 | static const unsigned short normal_i2c[] = { |
35 | 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END }; | |
1da177e4 LT |
36 | |
37 | /* Insmod parameters */ | |
c83c41e4 KH |
38 | I2C_CLIENT_INSMOD_8(adm1021, adm1023, max1617, max1617a, thmc10, lm84, gl523sm, |
39 | mc1066); | |
1da177e4 LT |
40 | |
41 | /* adm1021 constants specified below */ | |
42 | ||
43 | /* The adm1021 registers */ | |
44 | /* Read-only */ | |
a8d6646e KH |
45 | /* For nr in 0-1 */ |
46 | #define ADM1021_REG_TEMP(nr) (nr) | |
1da177e4 | 47 | #define ADM1021_REG_STATUS 0x02 |
c83c41e4 KH |
48 | /* 0x41 = AD, 0x49 = TI, 0x4D = Maxim, 0x23 = Genesys , 0x54 = Onsemi */ |
49 | #define ADM1021_REG_MAN_ID 0xFE | |
50 | /* ADM1021 = 0x0X, ADM1023 = 0x3X */ | |
51 | #define ADM1021_REG_DEV_ID 0xFF | |
1da177e4 LT |
52 | /* These use different addresses for reading/writing */ |
53 | #define ADM1021_REG_CONFIG_R 0x03 | |
54 | #define ADM1021_REG_CONFIG_W 0x09 | |
55 | #define ADM1021_REG_CONV_RATE_R 0x04 | |
56 | #define ADM1021_REG_CONV_RATE_W 0x0A | |
57 | /* These are for the ADM1023's additional precision on the remote temp sensor */ | |
c83c41e4 KH |
58 | #define ADM1023_REG_REM_TEMP_PREC 0x10 |
59 | #define ADM1023_REG_REM_OFFSET 0x11 | |
60 | #define ADM1023_REG_REM_OFFSET_PREC 0x12 | |
61 | #define ADM1023_REG_REM_TOS_PREC 0x13 | |
62 | #define ADM1023_REG_REM_THYST_PREC 0x14 | |
1da177e4 | 63 | /* limits */ |
a8d6646e KH |
64 | /* For nr in 0-1 */ |
65 | #define ADM1021_REG_TOS_R(nr) (0x05 + 2 * (nr)) | |
66 | #define ADM1021_REG_TOS_W(nr) (0x0B + 2 * (nr)) | |
67 | #define ADM1021_REG_THYST_R(nr) (0x06 + 2 * (nr)) | |
68 | #define ADM1021_REG_THYST_W(nr) (0x0C + 2 * (nr)) | |
1da177e4 LT |
69 | /* write-only */ |
70 | #define ADM1021_REG_ONESHOT 0x0F | |
71 | ||
1da177e4 LT |
72 | /* Initial values */ |
73 | ||
c83c41e4 KH |
74 | /* Note: Even though I left the low and high limits named os and hyst, |
75 | they don't quite work like a thermostat the way the LM75 does. I.e., | |
76 | a lower temp than THYST actually triggers an alarm instead of | |
1da177e4 LT |
77 | clearing it. Weird, ey? --Phil */ |
78 | ||
79 | /* Each client has this additional data */ | |
80 | struct adm1021_data { | |
1beeffe4 | 81 | struct device *hwmon_dev; |
1da177e4 LT |
82 | enum chips type; |
83 | ||
9a61bf63 | 84 | struct mutex update_lock; |
1da177e4 | 85 | char valid; /* !=0 if following fields are valid */ |
905ffdc3 | 86 | char low_power; /* !=0 if device in low power mode */ |
1da177e4 LT |
87 | unsigned long last_updated; /* In jiffies */ |
88 | ||
f2668895 MA |
89 | int temp_max[2]; /* Register values */ |
90 | int temp_min[2]; | |
91 | int temp[2]; | |
a8d6646e KH |
92 | u8 alarms; |
93 | /* Special values for ADM1023 only */ | |
a8d6646e KH |
94 | u8 remote_temp_offset; |
95 | u8 remote_temp_offset_prec; | |
1da177e4 LT |
96 | }; |
97 | ||
65817ed8 JD |
98 | static int adm1021_probe(struct i2c_client *client, |
99 | const struct i2c_device_id *id); | |
100 | static int adm1021_detect(struct i2c_client *client, int kind, | |
101 | struct i2c_board_info *info); | |
1da177e4 | 102 | static void adm1021_init_client(struct i2c_client *client); |
65817ed8 | 103 | static int adm1021_remove(struct i2c_client *client); |
1da177e4 LT |
104 | static struct adm1021_data *adm1021_update_device(struct device *dev); |
105 | ||
106 | /* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */ | |
02002963 | 107 | static int read_only; |
1da177e4 LT |
108 | |
109 | ||
65817ed8 JD |
110 | static const struct i2c_device_id adm1021_id[] = { |
111 | { "adm1021", adm1021 }, | |
112 | { "adm1023", adm1023 }, | |
113 | { "max1617", max1617 }, | |
114 | { "max1617a", max1617a }, | |
115 | { "thmc10", thmc10 }, | |
116 | { "lm84", lm84 }, | |
117 | { "gl523sm", gl523sm }, | |
118 | { "mc1066", mc1066 }, | |
119 | { } | |
120 | }; | |
121 | MODULE_DEVICE_TABLE(i2c, adm1021_id); | |
122 | ||
1da177e4 LT |
123 | /* This is the driver that will be inserted */ |
124 | static struct i2c_driver adm1021_driver = { | |
65817ed8 | 125 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 126 | .driver = { |
cdaf7934 LR |
127 | .name = "adm1021", |
128 | }, | |
65817ed8 JD |
129 | .probe = adm1021_probe, |
130 | .remove = adm1021_remove, | |
131 | .id_table = adm1021_id, | |
132 | .detect = adm1021_detect, | |
133 | .address_data = &addr_data, | |
1da177e4 LT |
134 | }; |
135 | ||
a8d6646e KH |
136 | static ssize_t show_temp(struct device *dev, |
137 | struct device_attribute *devattr, char *buf) | |
138 | { | |
139 | int index = to_sensor_dev_attr(devattr)->index; | |
140 | struct adm1021_data *data = adm1021_update_device(dev); | |
141 | ||
f2668895 | 142 | return sprintf(buf, "%d\n", data->temp[index]); |
a8d6646e KH |
143 | } |
144 | ||
145 | static ssize_t show_temp_max(struct device *dev, | |
146 | struct device_attribute *devattr, char *buf) | |
147 | { | |
148 | int index = to_sensor_dev_attr(devattr)->index; | |
149 | struct adm1021_data *data = adm1021_update_device(dev); | |
150 | ||
f2668895 | 151 | return sprintf(buf, "%d\n", data->temp_max[index]); |
a8d6646e KH |
152 | } |
153 | ||
154 | static ssize_t show_temp_min(struct device *dev, | |
155 | struct device_attribute *devattr, char *buf) | |
156 | { | |
157 | int index = to_sensor_dev_attr(devattr)->index; | |
158 | struct adm1021_data *data = adm1021_update_device(dev); | |
159 | ||
f2668895 | 160 | return sprintf(buf, "%d\n", data->temp_min[index]); |
1da177e4 | 161 | } |
1da177e4 | 162 | |
739ba248 KH |
163 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
164 | char *buf) | |
165 | { | |
166 | int index = to_sensor_dev_attr(attr)->index; | |
167 | struct adm1021_data *data = adm1021_update_device(dev); | |
168 | return sprintf(buf, "%u\n", (data->alarms >> index) & 1); | |
169 | } | |
170 | ||
c83c41e4 KH |
171 | static ssize_t show_alarms(struct device *dev, |
172 | struct device_attribute *attr, | |
173 | char *buf) | |
174 | { | |
175 | struct adm1021_data *data = adm1021_update_device(dev); | |
176 | return sprintf(buf, "%u\n", data->alarms); | |
1da177e4 | 177 | } |
c83c41e4 | 178 | |
a8d6646e KH |
179 | static ssize_t set_temp_max(struct device *dev, |
180 | struct device_attribute *devattr, | |
181 | const char *buf, size_t count) | |
182 | { | |
183 | int index = to_sensor_dev_attr(devattr)->index; | |
184 | struct i2c_client *client = to_i2c_client(dev); | |
185 | struct adm1021_data *data = i2c_get_clientdata(client); | |
186 | long temp = simple_strtol(buf, NULL, 10) / 1000; | |
187 | ||
188 | mutex_lock(&data->update_lock); | |
189 | data->temp_max[index] = SENSORS_LIMIT(temp, -128, 127); | |
190 | if (!read_only) | |
191 | i2c_smbus_write_byte_data(client, ADM1021_REG_TOS_W(index), | |
192 | data->temp_max[index]); | |
193 | mutex_unlock(&data->update_lock); | |
194 | ||
195 | return count; | |
196 | } | |
197 | ||
198 | static ssize_t set_temp_min(struct device *dev, | |
199 | struct device_attribute *devattr, | |
200 | const char *buf, size_t count) | |
201 | { | |
202 | int index = to_sensor_dev_attr(devattr)->index; | |
203 | struct i2c_client *client = to_i2c_client(dev); | |
204 | struct adm1021_data *data = i2c_get_clientdata(client); | |
205 | long temp = simple_strtol(buf, NULL, 10) / 1000; | |
206 | ||
207 | mutex_lock(&data->update_lock); | |
208 | data->temp_min[index] = SENSORS_LIMIT(temp, -128, 127); | |
209 | if (!read_only) | |
210 | i2c_smbus_write_byte_data(client, ADM1021_REG_THYST_W(index), | |
211 | data->temp_min[index]); | |
212 | mutex_unlock(&data->update_lock); | |
213 | ||
214 | return count; | |
1da177e4 | 215 | } |
1da177e4 | 216 | |
905ffdc3 MA |
217 | static ssize_t show_low_power(struct device *dev, |
218 | struct device_attribute *devattr, char *buf) | |
219 | { | |
220 | struct adm1021_data *data = adm1021_update_device(dev); | |
221 | return sprintf(buf, "%d\n", data->low_power); | |
222 | } | |
223 | ||
224 | static ssize_t set_low_power(struct device *dev, | |
225 | struct device_attribute *devattr, | |
226 | const char *buf, size_t count) | |
227 | { | |
228 | struct i2c_client *client = to_i2c_client(dev); | |
229 | struct adm1021_data *data = i2c_get_clientdata(client); | |
230 | int low_power = simple_strtol(buf, NULL, 10) != 0; | |
231 | ||
232 | mutex_lock(&data->update_lock); | |
233 | if (low_power != data->low_power) { | |
234 | int config = i2c_smbus_read_byte_data( | |
235 | client, ADM1021_REG_CONFIG_R); | |
236 | data->low_power = low_power; | |
237 | i2c_smbus_write_byte_data(client, ADM1021_REG_CONFIG_W, | |
238 | (config & 0xBF) | (low_power << 6)); | |
239 | } | |
240 | mutex_unlock(&data->update_lock); | |
241 | ||
242 | return count; | |
243 | } | |
244 | ||
245 | ||
a8d6646e KH |
246 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); |
247 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, | |
248 | set_temp_max, 0); | |
249 | static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min, | |
250 | set_temp_min, 0); | |
251 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); | |
252 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max, | |
253 | set_temp_max, 1); | |
254 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min, | |
255 | set_temp_min, 1); | |
739ba248 KH |
256 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); |
257 | static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL, 5); | |
258 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); | |
259 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); | |
260 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); | |
261 | ||
a8d6646e | 262 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
905ffdc3 | 263 | static DEVICE_ATTR(low_power, S_IWUSR | S_IRUGO, show_low_power, set_low_power); |
1da177e4 | 264 | |
681c6f7a | 265 | static struct attribute *adm1021_attributes[] = { |
a8d6646e KH |
266 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
267 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
268 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
269 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
270 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
271 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
739ba248 KH |
272 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, |
273 | &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, | |
274 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
275 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, | |
276 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
681c6f7a | 277 | &dev_attr_alarms.attr, |
905ffdc3 | 278 | &dev_attr_low_power.attr, |
681c6f7a MH |
279 | NULL |
280 | }; | |
281 | ||
282 | static const struct attribute_group adm1021_group = { | |
283 | .attrs = adm1021_attributes, | |
284 | }; | |
285 | ||
65817ed8 JD |
286 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
287 | static int adm1021_detect(struct i2c_client *client, int kind, | |
288 | struct i2c_board_info *info) | |
1da177e4 | 289 | { |
65817ed8 | 290 | struct i2c_adapter *adapter = client->adapter; |
1da177e4 | 291 | int i; |
1da177e4 | 292 | const char *type_name = ""; |
c83c41e4 | 293 | int conv_rate, status, config; |
1da177e4 | 294 | |
c83c41e4 KH |
295 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
296 | pr_debug("adm1021: detect failed, " | |
297 | "smbus byte data not supported!\n"); | |
65817ed8 | 298 | return -ENODEV; |
1da177e4 | 299 | } |
1da177e4 | 300 | |
c83c41e4 KH |
301 | status = i2c_smbus_read_byte_data(client, ADM1021_REG_STATUS); |
302 | conv_rate = i2c_smbus_read_byte_data(client, | |
303 | ADM1021_REG_CONV_RATE_R); | |
304 | config = i2c_smbus_read_byte_data(client, ADM1021_REG_CONFIG_R); | |
1da177e4 LT |
305 | |
306 | /* Now, we do the remaining detection. */ | |
307 | if (kind < 0) { | |
c83c41e4 KH |
308 | if ((status & 0x03) != 0x00 || (config & 0x3F) != 0x00 |
309 | || (conv_rate & 0xF8) != 0x00) { | |
310 | pr_debug("adm1021: detect failed, " | |
311 | "chip not detected!\n"); | |
65817ed8 | 312 | return -ENODEV; |
1da177e4 LT |
313 | } |
314 | } | |
315 | ||
316 | /* Determine the chip type. */ | |
317 | if (kind <= 0) { | |
c83c41e4 | 318 | i = i2c_smbus_read_byte_data(client, ADM1021_REG_MAN_ID); |
1da177e4 | 319 | if (i == 0x41) |
c83c41e4 KH |
320 | if ((i2c_smbus_read_byte_data(client, |
321 | ADM1021_REG_DEV_ID) & 0xF0) == 0x30) | |
1da177e4 LT |
322 | kind = adm1023; |
323 | else | |
324 | kind = adm1021; | |
325 | else if (i == 0x49) | |
326 | kind = thmc10; | |
327 | else if (i == 0x23) | |
328 | kind = gl523sm; | |
329 | else if ((i == 0x4d) && | |
c83c41e4 KH |
330 | (i2c_smbus_read_byte_data(client, |
331 | ADM1021_REG_DEV_ID) == 0x01)) | |
1da177e4 LT |
332 | kind = max1617a; |
333 | else if (i == 0x54) | |
334 | kind = mc1066; | |
335 | /* LM84 Mfr ID in a different place, and it has more unused bits */ | |
c83c41e4 KH |
336 | else if (conv_rate == 0x00 |
337 | && (kind == 0 /* skip extra detection */ | |
338 | || ((config & 0x7F) == 0x00 | |
339 | && (status & 0xAB) == 0x00))) | |
1da177e4 LT |
340 | kind = lm84; |
341 | else | |
342 | kind = max1617; | |
343 | } | |
344 | ||
345 | if (kind == max1617) { | |
346 | type_name = "max1617"; | |
347 | } else if (kind == max1617a) { | |
348 | type_name = "max1617a"; | |
349 | } else if (kind == adm1021) { | |
350 | type_name = "adm1021"; | |
351 | } else if (kind == adm1023) { | |
352 | type_name = "adm1023"; | |
353 | } else if (kind == thmc10) { | |
354 | type_name = "thmc10"; | |
355 | } else if (kind == lm84) { | |
356 | type_name = "lm84"; | |
357 | } else if (kind == gl523sm) { | |
358 | type_name = "gl523sm"; | |
359 | } else if (kind == mc1066) { | |
360 | type_name = "mc1066"; | |
361 | } | |
c83c41e4 | 362 | pr_debug("adm1021: Detected chip %s at adapter %d, address 0x%02x.\n", |
65817ed8 JD |
363 | type_name, i2c_adapter_id(adapter), client->addr); |
364 | strlcpy(info->type, type_name, I2C_NAME_SIZE); | |
1da177e4 | 365 | |
65817ed8 JD |
366 | return 0; |
367 | } | |
1da177e4 | 368 | |
65817ed8 JD |
369 | static int adm1021_probe(struct i2c_client *client, |
370 | const struct i2c_device_id *id) | |
371 | { | |
372 | struct adm1021_data *data; | |
373 | int err; | |
374 | ||
375 | data = kzalloc(sizeof(struct adm1021_data), GFP_KERNEL); | |
376 | if (!data) { | |
377 | pr_debug("adm1021: detect failed, kzalloc failed!\n"); | |
378 | err = -ENOMEM; | |
379 | goto error0; | |
380 | } | |
381 | ||
382 | i2c_set_clientdata(client, data); | |
383 | data->type = id->driver_data; | |
384 | mutex_init(&data->update_lock); | |
1da177e4 LT |
385 | |
386 | /* Initialize the ADM1021 chip */ | |
65817ed8 | 387 | if (data->type != lm84 && !read_only) |
c83c41e4 | 388 | adm1021_init_client(client); |
1da177e4 LT |
389 | |
390 | /* Register sysfs hooks */ | |
c83c41e4 | 391 | if ((err = sysfs_create_group(&client->dev.kobj, &adm1021_group))) |
65817ed8 | 392 | goto error1; |
681c6f7a | 393 | |
1beeffe4 TJ |
394 | data->hwmon_dev = hwmon_device_register(&client->dev); |
395 | if (IS_ERR(data->hwmon_dev)) { | |
396 | err = PTR_ERR(data->hwmon_dev); | |
681c6f7a | 397 | goto error3; |
943b0830 MH |
398 | } |
399 | ||
1da177e4 LT |
400 | return 0; |
401 | ||
681c6f7a | 402 | error3: |
c83c41e4 | 403 | sysfs_remove_group(&client->dev.kobj, &adm1021_group); |
1da177e4 LT |
404 | error1: |
405 | kfree(data); | |
406 | error0: | |
407 | return err; | |
408 | } | |
409 | ||
410 | static void adm1021_init_client(struct i2c_client *client) | |
411 | { | |
412 | /* Enable ADC and disable suspend mode */ | |
c83c41e4 KH |
413 | i2c_smbus_write_byte_data(client, ADM1021_REG_CONFIG_W, |
414 | i2c_smbus_read_byte_data(client, ADM1021_REG_CONFIG_R) & 0xBF); | |
1da177e4 | 415 | /* Set Conversion rate to 1/sec (this can be tinkered with) */ |
c83c41e4 | 416 | i2c_smbus_write_byte_data(client, ADM1021_REG_CONV_RATE_W, 0x04); |
1da177e4 LT |
417 | } |
418 | ||
65817ed8 | 419 | static int adm1021_remove(struct i2c_client *client) |
1da177e4 | 420 | { |
943b0830 | 421 | struct adm1021_data *data = i2c_get_clientdata(client); |
1da177e4 | 422 | |
1beeffe4 | 423 | hwmon_device_unregister(data->hwmon_dev); |
681c6f7a | 424 | sysfs_remove_group(&client->dev.kobj, &adm1021_group); |
943b0830 | 425 | |
943b0830 | 426 | kfree(data); |
1da177e4 LT |
427 | return 0; |
428 | } | |
429 | ||
1da177e4 LT |
430 | static struct adm1021_data *adm1021_update_device(struct device *dev) |
431 | { | |
432 | struct i2c_client *client = to_i2c_client(dev); | |
433 | struct adm1021_data *data = i2c_get_clientdata(client); | |
434 | ||
9a61bf63 | 435 | mutex_lock(&data->update_lock); |
1da177e4 LT |
436 | |
437 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
438 | || !data->valid) { | |
a8d6646e KH |
439 | int i; |
440 | ||
1da177e4 LT |
441 | dev_dbg(&client->dev, "Starting adm1021 update\n"); |
442 | ||
a8d6646e | 443 | for (i = 0; i < 2; i++) { |
f2668895 MA |
444 | data->temp[i] = 1000 * |
445 | (s8) i2c_smbus_read_byte_data( | |
446 | client, ADM1021_REG_TEMP(i)); | |
447 | data->temp_max[i] = 1000 * | |
448 | (s8) i2c_smbus_read_byte_data( | |
449 | client, ADM1021_REG_TOS_R(i)); | |
450 | data->temp_min[i] = 1000 * | |
451 | (s8) i2c_smbus_read_byte_data( | |
452 | client, ADM1021_REG_THYST_R(i)); | |
a8d6646e | 453 | } |
c83c41e4 KH |
454 | data->alarms = i2c_smbus_read_byte_data(client, |
455 | ADM1021_REG_STATUS) & 0x7c; | |
1da177e4 | 456 | if (data->type == adm1023) { |
f2668895 MA |
457 | /* The ADM1023 provides 3 extra bits of precision for |
458 | * the remote sensor in extra registers. */ | |
459 | data->temp[1] += 125 * (i2c_smbus_read_byte_data( | |
460 | client, ADM1023_REG_REM_TEMP_PREC) >> 5); | |
461 | data->temp_max[1] += 125 * (i2c_smbus_read_byte_data( | |
462 | client, ADM1023_REG_REM_TOS_PREC) >> 5); | |
463 | data->temp_min[1] += 125 * (i2c_smbus_read_byte_data( | |
464 | client, ADM1023_REG_REM_THYST_PREC) >> 5); | |
c83c41e4 KH |
465 | data->remote_temp_offset = |
466 | i2c_smbus_read_byte_data(client, | |
467 | ADM1023_REG_REM_OFFSET); | |
468 | data->remote_temp_offset_prec = | |
469 | i2c_smbus_read_byte_data(client, | |
470 | ADM1023_REG_REM_OFFSET_PREC); | |
1da177e4 LT |
471 | } |
472 | data->last_updated = jiffies; | |
473 | data->valid = 1; | |
474 | } | |
475 | ||
9a61bf63 | 476 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
477 | |
478 | return data; | |
479 | } | |
480 | ||
481 | static int __init sensors_adm1021_init(void) | |
482 | { | |
483 | return i2c_add_driver(&adm1021_driver); | |
484 | } | |
485 | ||
486 | static void __exit sensors_adm1021_exit(void) | |
487 | { | |
488 | i2c_del_driver(&adm1021_driver); | |
489 | } | |
490 | ||
491 | MODULE_AUTHOR ("Frodo Looijaard <frodol@dds.nl> and " | |
492 | "Philip Edelbrock <phil@netroedge.com>"); | |
493 | MODULE_DESCRIPTION("adm1021 driver"); | |
494 | MODULE_LICENSE("GPL"); | |
495 | ||
496 | module_param(read_only, bool, 0); | |
497 | MODULE_PARM_DESC(read_only, "Don't set any values, read only mode"); | |
498 | ||
499 | module_init(sensors_adm1021_init) | |
500 | module_exit(sensors_adm1021_exit) |