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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
21d2a8f1 GR |
3 | * adm1021.c - Part of lm_sensors, Linux kernel modules for hardware |
4 | * monitoring | |
5 | * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and | |
6 | * Philip Edelbrock <phil@netroedge.com> | |
21d2a8f1 | 7 | */ |
1da177e4 | 8 | |
1da177e4 LT |
9 | #include <linux/module.h> |
10 | #include <linux/init.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/jiffies.h> | |
13 | #include <linux/i2c.h> | |
943b0830 | 14 | #include <linux/hwmon.h> |
a8d6646e | 15 | #include <linux/hwmon-sysfs.h> |
943b0830 | 16 | #include <linux/err.h> |
9a61bf63 | 17 | #include <linux/mutex.h> |
1da177e4 LT |
18 | |
19 | ||
20 | /* Addresses to scan */ | |
25e9c86d MH |
21 | static const unsigned short normal_i2c[] = { |
22 | 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END }; | |
1da177e4 | 23 | |
e5e9f44c JD |
24 | enum chips { |
25 | adm1021, adm1023, max1617, max1617a, thmc10, lm84, gl523sm, mc1066 }; | |
1da177e4 LT |
26 | |
27 | /* adm1021 constants specified below */ | |
28 | ||
29 | /* The adm1021 registers */ | |
30 | /* Read-only */ | |
a8d6646e KH |
31 | /* For nr in 0-1 */ |
32 | #define ADM1021_REG_TEMP(nr) (nr) | |
1da177e4 | 33 | #define ADM1021_REG_STATUS 0x02 |
c83c41e4 KH |
34 | /* 0x41 = AD, 0x49 = TI, 0x4D = Maxim, 0x23 = Genesys , 0x54 = Onsemi */ |
35 | #define ADM1021_REG_MAN_ID 0xFE | |
36 | /* ADM1021 = 0x0X, ADM1023 = 0x3X */ | |
37 | #define ADM1021_REG_DEV_ID 0xFF | |
1da177e4 LT |
38 | /* These use different addresses for reading/writing */ |
39 | #define ADM1021_REG_CONFIG_R 0x03 | |
40 | #define ADM1021_REG_CONFIG_W 0x09 | |
41 | #define ADM1021_REG_CONV_RATE_R 0x04 | |
42 | #define ADM1021_REG_CONV_RATE_W 0x0A | |
43 | /* These are for the ADM1023's additional precision on the remote temp sensor */ | |
c83c41e4 KH |
44 | #define ADM1023_REG_REM_TEMP_PREC 0x10 |
45 | #define ADM1023_REG_REM_OFFSET 0x11 | |
46 | #define ADM1023_REG_REM_OFFSET_PREC 0x12 | |
47 | #define ADM1023_REG_REM_TOS_PREC 0x13 | |
48 | #define ADM1023_REG_REM_THYST_PREC 0x14 | |
1da177e4 | 49 | /* limits */ |
a8d6646e KH |
50 | /* For nr in 0-1 */ |
51 | #define ADM1021_REG_TOS_R(nr) (0x05 + 2 * (nr)) | |
52 | #define ADM1021_REG_TOS_W(nr) (0x0B + 2 * (nr)) | |
53 | #define ADM1021_REG_THYST_R(nr) (0x06 + 2 * (nr)) | |
54 | #define ADM1021_REG_THYST_W(nr) (0x0C + 2 * (nr)) | |
1da177e4 LT |
55 | /* write-only */ |
56 | #define ADM1021_REG_ONESHOT 0x0F | |
57 | ||
1da177e4 LT |
58 | /* Initial values */ |
59 | ||
21d2a8f1 GR |
60 | /* |
61 | * Note: Even though I left the low and high limits named os and hyst, | |
62 | * they don't quite work like a thermostat the way the LM75 does. I.e., | |
63 | * a lower temp than THYST actually triggers an alarm instead of | |
64 | * clearing it. Weird, ey? --Phil | |
65 | */ | |
1da177e4 LT |
66 | |
67 | /* Each client has this additional data */ | |
68 | struct adm1021_data { | |
c669ec80 | 69 | struct i2c_client *client; |
1da177e4 LT |
70 | enum chips type; |
71 | ||
c669ec80 GR |
72 | const struct attribute_group *groups[3]; |
73 | ||
9a61bf63 | 74 | struct mutex update_lock; |
952a11ca | 75 | bool valid; /* true if following fields are valid */ |
905ffdc3 | 76 | char low_power; /* !=0 if device in low power mode */ |
1da177e4 LT |
77 | unsigned long last_updated; /* In jiffies */ |
78 | ||
f2668895 MA |
79 | int temp_max[2]; /* Register values */ |
80 | int temp_min[2]; | |
81 | int temp[2]; | |
a8d6646e KH |
82 | u8 alarms; |
83 | /* Special values for ADM1023 only */ | |
a8d6646e KH |
84 | u8 remote_temp_offset; |
85 | u8 remote_temp_offset_prec; | |
1da177e4 LT |
86 | }; |
87 | ||
1da177e4 | 88 | /* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */ |
90ab5ee9 | 89 | static bool read_only; |
1da177e4 | 90 | |
48995bc4 AL |
91 | static struct adm1021_data *adm1021_update_device(struct device *dev) |
92 | { | |
93 | struct adm1021_data *data = dev_get_drvdata(dev); | |
94 | struct i2c_client *client = data->client; | |
1da177e4 | 95 | |
48995bc4 | 96 | mutex_lock(&data->update_lock); |
65817ed8 | 97 | |
48995bc4 AL |
98 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
99 | || !data->valid) { | |
100 | int i; | |
101 | ||
102 | dev_dbg(dev, "Starting adm1021 update\n"); | |
103 | ||
104 | for (i = 0; i < 2; i++) { | |
105 | data->temp[i] = 1000 * | |
106 | (s8) i2c_smbus_read_byte_data( | |
107 | client, ADM1021_REG_TEMP(i)); | |
108 | data->temp_max[i] = 1000 * | |
109 | (s8) i2c_smbus_read_byte_data( | |
110 | client, ADM1021_REG_TOS_R(i)); | |
111 | if (data->type != lm84) { | |
112 | data->temp_min[i] = 1000 * | |
113 | (s8) i2c_smbus_read_byte_data(client, | |
114 | ADM1021_REG_THYST_R(i)); | |
115 | } | |
116 | } | |
117 | data->alarms = i2c_smbus_read_byte_data(client, | |
118 | ADM1021_REG_STATUS) & 0x7c; | |
119 | if (data->type == adm1023) { | |
120 | /* | |
121 | * The ADM1023 provides 3 extra bits of precision for | |
122 | * the remote sensor in extra registers. | |
123 | */ | |
124 | data->temp[1] += 125 * (i2c_smbus_read_byte_data( | |
125 | client, ADM1023_REG_REM_TEMP_PREC) >> 5); | |
126 | data->temp_max[1] += 125 * (i2c_smbus_read_byte_data( | |
127 | client, ADM1023_REG_REM_TOS_PREC) >> 5); | |
128 | data->temp_min[1] += 125 * (i2c_smbus_read_byte_data( | |
129 | client, ADM1023_REG_REM_THYST_PREC) >> 5); | |
130 | data->remote_temp_offset = | |
131 | i2c_smbus_read_byte_data(client, | |
132 | ADM1023_REG_REM_OFFSET); | |
133 | data->remote_temp_offset_prec = | |
134 | i2c_smbus_read_byte_data(client, | |
135 | ADM1023_REG_REM_OFFSET_PREC); | |
136 | } | |
137 | data->last_updated = jiffies; | |
952a11ca | 138 | data->valid = true; |
48995bc4 AL |
139 | } |
140 | ||
141 | mutex_unlock(&data->update_lock); | |
142 | ||
143 | return data; | |
144 | } | |
1da177e4 | 145 | |
cfc5bca6 GR |
146 | static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, |
147 | char *buf) | |
a8d6646e KH |
148 | { |
149 | int index = to_sensor_dev_attr(devattr)->index; | |
150 | struct adm1021_data *data = adm1021_update_device(dev); | |
151 | ||
f2668895 | 152 | return sprintf(buf, "%d\n", data->temp[index]); |
a8d6646e KH |
153 | } |
154 | ||
cfc5bca6 | 155 | static ssize_t temp_max_show(struct device *dev, |
a8d6646e KH |
156 | struct device_attribute *devattr, char *buf) |
157 | { | |
158 | int index = to_sensor_dev_attr(devattr)->index; | |
159 | struct adm1021_data *data = adm1021_update_device(dev); | |
160 | ||
f2668895 | 161 | return sprintf(buf, "%d\n", data->temp_max[index]); |
a8d6646e KH |
162 | } |
163 | ||
cfc5bca6 | 164 | static ssize_t temp_min_show(struct device *dev, |
a8d6646e KH |
165 | struct device_attribute *devattr, char *buf) |
166 | { | |
167 | int index = to_sensor_dev_attr(devattr)->index; | |
168 | struct adm1021_data *data = adm1021_update_device(dev); | |
169 | ||
f2668895 | 170 | return sprintf(buf, "%d\n", data->temp_min[index]); |
1da177e4 | 171 | } |
1da177e4 | 172 | |
cfc5bca6 | 173 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
739ba248 KH |
174 | char *buf) |
175 | { | |
176 | int index = to_sensor_dev_attr(attr)->index; | |
177 | struct adm1021_data *data = adm1021_update_device(dev); | |
178 | return sprintf(buf, "%u\n", (data->alarms >> index) & 1); | |
179 | } | |
180 | ||
6b41013d | 181 | static ssize_t alarms_show(struct device *dev, |
c83c41e4 KH |
182 | struct device_attribute *attr, |
183 | char *buf) | |
184 | { | |
185 | struct adm1021_data *data = adm1021_update_device(dev); | |
186 | return sprintf(buf, "%u\n", data->alarms); | |
1da177e4 | 187 | } |
c83c41e4 | 188 | |
cfc5bca6 GR |
189 | static ssize_t temp_max_store(struct device *dev, |
190 | struct device_attribute *devattr, | |
191 | const char *buf, size_t count) | |
a8d6646e KH |
192 | { |
193 | int index = to_sensor_dev_attr(devattr)->index; | |
c669ec80 GR |
194 | struct adm1021_data *data = dev_get_drvdata(dev); |
195 | struct i2c_client *client = data->client; | |
21d2a8f1 | 196 | long temp; |
c024044d | 197 | int reg_val, err; |
21d2a8f1 GR |
198 | |
199 | err = kstrtol(buf, 10, &temp); | |
200 | if (err) | |
201 | return err; | |
202 | temp /= 1000; | |
a8d6646e KH |
203 | |
204 | mutex_lock(&data->update_lock); | |
c024044d AL |
205 | reg_val = clamp_val(temp, -128, 127); |
206 | data->temp_max[index] = reg_val * 1000; | |
a8d6646e KH |
207 | if (!read_only) |
208 | i2c_smbus_write_byte_data(client, ADM1021_REG_TOS_W(index), | |
c024044d | 209 | reg_val); |
a8d6646e KH |
210 | mutex_unlock(&data->update_lock); |
211 | ||
212 | return count; | |
213 | } | |
214 | ||
cfc5bca6 GR |
215 | static ssize_t temp_min_store(struct device *dev, |
216 | struct device_attribute *devattr, | |
217 | const char *buf, size_t count) | |
a8d6646e KH |
218 | { |
219 | int index = to_sensor_dev_attr(devattr)->index; | |
c669ec80 GR |
220 | struct adm1021_data *data = dev_get_drvdata(dev); |
221 | struct i2c_client *client = data->client; | |
21d2a8f1 | 222 | long temp; |
c024044d | 223 | int reg_val, err; |
21d2a8f1 GR |
224 | |
225 | err = kstrtol(buf, 10, &temp); | |
226 | if (err) | |
227 | return err; | |
228 | temp /= 1000; | |
a8d6646e KH |
229 | |
230 | mutex_lock(&data->update_lock); | |
c024044d AL |
231 | reg_val = clamp_val(temp, -128, 127); |
232 | data->temp_min[index] = reg_val * 1000; | |
a8d6646e KH |
233 | if (!read_only) |
234 | i2c_smbus_write_byte_data(client, ADM1021_REG_THYST_W(index), | |
c024044d | 235 | reg_val); |
a8d6646e KH |
236 | mutex_unlock(&data->update_lock); |
237 | ||
238 | return count; | |
1da177e4 | 239 | } |
1da177e4 | 240 | |
6b41013d | 241 | static ssize_t low_power_show(struct device *dev, |
905ffdc3 MA |
242 | struct device_attribute *devattr, char *buf) |
243 | { | |
244 | struct adm1021_data *data = adm1021_update_device(dev); | |
245 | return sprintf(buf, "%d\n", data->low_power); | |
246 | } | |
247 | ||
6b41013d JL |
248 | static ssize_t low_power_store(struct device *dev, |
249 | struct device_attribute *devattr, | |
250 | const char *buf, size_t count) | |
905ffdc3 | 251 | { |
c669ec80 GR |
252 | struct adm1021_data *data = dev_get_drvdata(dev); |
253 | struct i2c_client *client = data->client; | |
21d2a8f1 GR |
254 | char low_power; |
255 | unsigned long val; | |
256 | int err; | |
257 | ||
258 | err = kstrtoul(buf, 10, &val); | |
259 | if (err) | |
260 | return err; | |
261 | low_power = val != 0; | |
905ffdc3 MA |
262 | |
263 | mutex_lock(&data->update_lock); | |
264 | if (low_power != data->low_power) { | |
265 | int config = i2c_smbus_read_byte_data( | |
266 | client, ADM1021_REG_CONFIG_R); | |
267 | data->low_power = low_power; | |
268 | i2c_smbus_write_byte_data(client, ADM1021_REG_CONFIG_W, | |
269 | (config & 0xBF) | (low_power << 6)); | |
270 | } | |
271 | mutex_unlock(&data->update_lock); | |
272 | ||
273 | return count; | |
274 | } | |
275 | ||
276 | ||
cfc5bca6 GR |
277 | static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0); |
278 | static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); | |
279 | static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0); | |
280 | static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); | |
281 | static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); | |
282 | static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1); | |
283 | static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 6); | |
284 | static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, alarm, 5); | |
285 | static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 4); | |
286 | static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, alarm, 3); | |
287 | static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 2); | |
739ba248 | 288 | |
6b41013d JL |
289 | static DEVICE_ATTR_RO(alarms); |
290 | static DEVICE_ATTR_RW(low_power); | |
1da177e4 | 291 | |
681c6f7a | 292 | static struct attribute *adm1021_attributes[] = { |
a8d6646e | 293 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
a8d6646e KH |
294 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
295 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
a8d6646e | 296 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
739ba248 | 297 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, |
739ba248 | 298 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, |
739ba248 | 299 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
681c6f7a | 300 | &dev_attr_alarms.attr, |
905ffdc3 | 301 | &dev_attr_low_power.attr, |
681c6f7a MH |
302 | NULL |
303 | }; | |
304 | ||
305 | static const struct attribute_group adm1021_group = { | |
306 | .attrs = adm1021_attributes, | |
307 | }; | |
308 | ||
68146a57 GR |
309 | static struct attribute *adm1021_min_attributes[] = { |
310 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
311 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
312 | &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, | |
313 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, | |
314 | NULL | |
315 | }; | |
316 | ||
317 | static const struct attribute_group adm1021_min_group = { | |
318 | .attrs = adm1021_min_attributes, | |
319 | }; | |
320 | ||
65817ed8 | 321 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 322 | static int adm1021_detect(struct i2c_client *client, |
65817ed8 | 323 | struct i2c_board_info *info) |
1da177e4 | 324 | { |
65817ed8 | 325 | struct i2c_adapter *adapter = client->adapter; |
8007ea35 | 326 | const char *type_name; |
ff9b8778 | 327 | int reg, conv_rate, status, config, man_id, dev_id; |
1da177e4 | 328 | |
c83c41e4 | 329 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
b55f3757 | 330 | pr_debug("detect failed, smbus byte data not supported!\n"); |
65817ed8 | 331 | return -ENODEV; |
1da177e4 | 332 | } |
1da177e4 | 333 | |
c83c41e4 KH |
334 | status = i2c_smbus_read_byte_data(client, ADM1021_REG_STATUS); |
335 | conv_rate = i2c_smbus_read_byte_data(client, | |
336 | ADM1021_REG_CONV_RATE_R); | |
337 | config = i2c_smbus_read_byte_data(client, ADM1021_REG_CONFIG_R); | |
1da177e4 | 338 | |
8007ea35 JD |
339 | /* Check unused bits */ |
340 | if ((status & 0x03) || (config & 0x3F) || (conv_rate & 0xF8)) { | |
b55f3757 | 341 | pr_debug("detect failed, chip not detected!\n"); |
8007ea35 | 342 | return -ENODEV; |
1da177e4 LT |
343 | } |
344 | ||
345 | /* Determine the chip type. */ | |
8007ea35 JD |
346 | man_id = i2c_smbus_read_byte_data(client, ADM1021_REG_MAN_ID); |
347 | dev_id = i2c_smbus_read_byte_data(client, ADM1021_REG_DEV_ID); | |
1da177e4 | 348 | |
591bfcfc GR |
349 | if (man_id < 0 || dev_id < 0) |
350 | return -ENODEV; | |
351 | ||
ff9b8778 GR |
352 | if (man_id == 0x4d && dev_id == 0x01) { |
353 | /* | |
354 | * dev_id 0x01 matches MAX6680, MAX6695, MAX6696, and possibly | |
355 | * others. Read register which is unsupported on MAX1617 but | |
356 | * exists on all those chips and compare with the dev_id | |
357 | * register. If it matches, it may be a MAX1617A. | |
358 | */ | |
359 | reg = i2c_smbus_read_byte_data(client, | |
360 | ADM1023_REG_REM_TEMP_PREC); | |
361 | if (reg != dev_id) | |
362 | return -ENODEV; | |
1da177e4 | 363 | type_name = "max1617a"; |
ff9b8778 | 364 | } else if (man_id == 0x41) { |
8007ea35 JD |
365 | if ((dev_id & 0xF0) == 0x30) |
366 | type_name = "adm1023"; | |
591bfcfc | 367 | else if ((dev_id & 0xF0) == 0x00) |
8007ea35 | 368 | type_name = "adm1021"; |
591bfcfc GR |
369 | else |
370 | return -ENODEV; | |
8007ea35 | 371 | } else if (man_id == 0x49) |
1da177e4 | 372 | type_name = "thmc10"; |
8007ea35 | 373 | else if (man_id == 0x23) |
1da177e4 | 374 | type_name = "gl523sm"; |
8007ea35 | 375 | else if (man_id == 0x54) |
1da177e4 | 376 | type_name = "mc1066"; |
591bfcfc GR |
377 | else { |
378 | int lte, rte, lhi, rhi, llo, rlo; | |
379 | ||
380 | /* extra checks for LM84 and MAX1617 to avoid misdetections */ | |
381 | ||
382 | llo = i2c_smbus_read_byte_data(client, ADM1021_REG_THYST_R(0)); | |
383 | rlo = i2c_smbus_read_byte_data(client, ADM1021_REG_THYST_R(1)); | |
384 | ||
385 | /* fail if any of the additional register reads failed */ | |
386 | if (llo < 0 || rlo < 0) | |
387 | return -ENODEV; | |
388 | ||
389 | lte = i2c_smbus_read_byte_data(client, ADM1021_REG_TEMP(0)); | |
390 | rte = i2c_smbus_read_byte_data(client, ADM1021_REG_TEMP(1)); | |
391 | lhi = i2c_smbus_read_byte_data(client, ADM1021_REG_TOS_R(0)); | |
392 | rhi = i2c_smbus_read_byte_data(client, ADM1021_REG_TOS_R(1)); | |
393 | ||
394 | /* | |
395 | * Fail for negative temperatures and negative high limits. | |
396 | * This check also catches read errors on the tested registers. | |
397 | */ | |
398 | if ((s8)lte < 0 || (s8)rte < 0 || (s8)lhi < 0 || (s8)rhi < 0) | |
399 | return -ENODEV; | |
400 | ||
401 | /* fail if all registers hold the same value */ | |
402 | if (lte == rte && lte == lhi && lte == rhi && lte == llo | |
403 | && lte == rlo) | |
404 | return -ENODEV; | |
405 | ||
406 | /* | |
407 | * LM84 Mfr ID is in a different place, | |
ff9b8778 GR |
408 | * and it has more unused bits. Registers at 0xfe and 0xff |
409 | * are undefined and return the most recently read value, | |
410 | * here the value of the configuration register. | |
591bfcfc GR |
411 | */ |
412 | if (conv_rate == 0x00 | |
ff9b8778 | 413 | && man_id == config && dev_id == config |
591bfcfc GR |
414 | && (config & 0x7F) == 0x00 |
415 | && (status & 0xAB) == 0x00) { | |
416 | type_name = "lm84"; | |
417 | } else { | |
ff9b8778 GR |
418 | if ((config & 0x3f) || (status & 0x03)) |
419 | return -ENODEV; | |
591bfcfc GR |
420 | /* fail if low limits are larger than high limits */ |
421 | if ((s8)llo > lhi || (s8)rlo > rhi) | |
422 | return -ENODEV; | |
423 | type_name = "max1617"; | |
424 | } | |
425 | } | |
8007ea35 | 426 | |
b55f3757 | 427 | pr_debug("Detected chip %s at adapter %d, address 0x%02x.\n", |
65817ed8 | 428 | type_name, i2c_adapter_id(adapter), client->addr); |
f2f394db | 429 | strscpy(info->type, type_name, I2C_NAME_SIZE); |
1da177e4 | 430 | |
65817ed8 JD |
431 | return 0; |
432 | } | |
1da177e4 | 433 | |
48995bc4 AL |
434 | static void adm1021_init_client(struct i2c_client *client) |
435 | { | |
436 | /* Enable ADC and disable suspend mode */ | |
437 | i2c_smbus_write_byte_data(client, ADM1021_REG_CONFIG_W, | |
438 | i2c_smbus_read_byte_data(client, ADM1021_REG_CONFIG_R) & 0xBF); | |
439 | /* Set Conversion rate to 1/sec (this can be tinkered with) */ | |
440 | i2c_smbus_write_byte_data(client, ADM1021_REG_CONV_RATE_W, 0x04); | |
441 | } | |
442 | ||
67487038 SK |
443 | static const struct i2c_device_id adm1021_id[]; |
444 | ||
445 | static int adm1021_probe(struct i2c_client *client) | |
65817ed8 | 446 | { |
c669ec80 | 447 | struct device *dev = &client->dev; |
65817ed8 | 448 | struct adm1021_data *data; |
c669ec80 | 449 | struct device *hwmon_dev; |
65817ed8 | 450 | |
c669ec80 | 451 | data = devm_kzalloc(dev, sizeof(struct adm1021_data), GFP_KERNEL); |
b55f3757 | 452 | if (!data) |
06ce97d6 | 453 | return -ENOMEM; |
65817ed8 | 454 | |
c669ec80 | 455 | data->client = client; |
67487038 | 456 | data->type = i2c_match_id(adm1021_id, client)->driver_data; |
65817ed8 | 457 | mutex_init(&data->update_lock); |
1da177e4 LT |
458 | |
459 | /* Initialize the ADM1021 chip */ | |
65817ed8 | 460 | if (data->type != lm84 && !read_only) |
c83c41e4 | 461 | adm1021_init_client(client); |
1da177e4 | 462 | |
c669ec80 GR |
463 | data->groups[0] = &adm1021_group; |
464 | if (data->type != lm84) | |
465 | data->groups[1] = &adm1021_min_group; | |
68146a57 | 466 | |
c669ec80 GR |
467 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
468 | data, data->groups); | |
943b0830 | 469 | |
c669ec80 | 470 | return PTR_ERR_OR_ZERO(hwmon_dev); |
1da177e4 LT |
471 | } |
472 | ||
48995bc4 AL |
473 | static const struct i2c_device_id adm1021_id[] = { |
474 | { "adm1021", adm1021 }, | |
475 | { "adm1023", adm1023 }, | |
476 | { "max1617", max1617 }, | |
477 | { "max1617a", max1617a }, | |
478 | { "thmc10", thmc10 }, | |
479 | { "lm84", lm84 }, | |
480 | { "gl523sm", gl523sm }, | |
481 | { "mc1066", mc1066 }, | |
482 | { } | |
483 | }; | |
484 | MODULE_DEVICE_TABLE(i2c, adm1021_id); | |
1da177e4 | 485 | |
48995bc4 AL |
486 | static struct i2c_driver adm1021_driver = { |
487 | .class = I2C_CLASS_HWMON, | |
488 | .driver = { | |
489 | .name = "adm1021", | |
490 | }, | |
1975d167 | 491 | .probe = adm1021_probe, |
48995bc4 AL |
492 | .id_table = adm1021_id, |
493 | .detect = adm1021_detect, | |
494 | .address_list = normal_i2c, | |
495 | }; | |
1da177e4 | 496 | |
f0967eea | 497 | module_i2c_driver(adm1021_driver); |
1da177e4 | 498 | |
21d2a8f1 | 499 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and " |
1da177e4 LT |
500 | "Philip Edelbrock <phil@netroedge.com>"); |
501 | MODULE_DESCRIPTION("adm1021 driver"); | |
502 | MODULE_LICENSE("GPL"); | |
503 | ||
504 | module_param(read_only, bool, 0); | |
505 | MODULE_PARM_DESC(read_only, "Don't set any values, read only mode"); |