1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Driver for TI ADC128D818 System Monitor with Temperature Sensor |
4 | * |
5 | * Copyright (c) 2014 Guenter Roeck |
6 | * |
7 | * Derived from lm80.c |
8 | * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
9 | * and Philip Edelbrock <phil@netroedge.com> |
10 | */ |
11 | |
12 | #include <linux/module.h> |
13 | #include <linux/slab.h> |
14 | #include <linux/jiffies.h> |
15 | #include <linux/i2c.h> |
16 | #include <linux/hwmon.h> |
17 | #include <linux/hwmon-sysfs.h> |
18 | #include <linux/err.h> |
19 | #include <linux/regulator/consumer.h> |
20 | #include <linux/mutex.h> |
21 | #include <linux/bitops.h> |
22 | #include <linux/of.h> |
23 | |
24 | /* Addresses to scan |
25 | * The chip also supports addresses 0x35..0x37. Don't scan those addresses |
26 | * since they are also used by some EEPROMs, which may result in false |
27 | * positives. |
28 | */ |
29 | static const unsigned short normal_i2c[] = { |
30 | 0x1d, 0x1e, 0x1f, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; |
31 | |
32 | /* registers */ |
33 | #define ADC128_REG_IN_MAX(nr) (0x2a + (nr) * 2) |
34 | #define ADC128_REG_IN_MIN(nr) (0x2b + (nr) * 2) |
35 | #define ADC128_REG_IN(nr) (0x20 + (nr)) |
36 | |
37 | #define ADC128_REG_TEMP 0x27 |
38 | #define ADC128_REG_TEMP_MAX 0x38 |
39 | #define ADC128_REG_TEMP_HYST 0x39 |
40 | |
41 | #define ADC128_REG_CONFIG 0x00 |
42 | #define ADC128_REG_ALARM 0x01 |
43 | #define ADC128_REG_MASK 0x03 |
44 | #define ADC128_REG_CONV_RATE 0x07 |
45 | #define ADC128_REG_ONESHOT 0x09 |
46 | #define ADC128_REG_SHUTDOWN 0x0a |
47 | #define ADC128_REG_CONFIG_ADV 0x0b |
48 | #define ADC128_REG_BUSY_STATUS 0x0c |
49 | |
50 | #define ADC128_REG_MAN_ID 0x3e |
51 | #define ADC128_REG_DEV_ID 0x3f |
52 | |
53 | /* No. of voltage entries in adc128_attrs */ |
54 | #define ADC128_ATTR_NUM_VOLT (8 * 4) |
55 | |
56 | /* Voltage inputs visible per operation mode */ |
57 | static const u8 num_inputs[] = { 7, 8, 4, 6 }; |
58 | |
59 | struct adc128_data { |
60 | struct i2c_client *client; |
61 | struct regulator *regulator; |
62 | int vref; /* Reference voltage in mV */ |
63 | struct mutex update_lock; |
64 | u8 mode; /* Operation mode */ |
65 | bool valid; /* true if following fields are valid */ |
66 | unsigned long last_updated; /* In jiffies */ |
67 | |
68 | u16 in[3][8]; /* Register value, normalized to 12 bit |
69 | * 0: input voltage |
70 | * 1: min limit |
71 | * 2: max limit |
72 | */ |
73 | s16 temp[3]; /* Register value, normalized to 9 bit |
74 | * 0: sensor 1: limit 2: hyst |
75 | */ |
76 | u8 alarms; /* alarm register value */ |
77 | }; |
78 | |
79 | static struct adc128_data *adc128_update_device(struct device *dev) |
80 | { |
81 | struct adc128_data *data = dev_get_drvdata(dev); |
82 | struct i2c_client *client = data->client; |
83 | struct adc128_data *ret = data; |
84 | int i, rv; |
85 | |
86 | mutex_lock(&data->update_lock); |
87 | |
88 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { |
89 | for (i = 0; i < num_inputs[data->mode]; i++) { |
90 | rv = i2c_smbus_read_word_swapped(client, |
91 | ADC128_REG_IN(i)); |
92 | if (rv < 0) |
93 | goto abort; |
94 | data->in[0][i] = rv >> 4; |
95 | |
96 | rv = i2c_smbus_read_byte_data(client, |
97 | ADC128_REG_IN_MIN(i)); |
98 | if (rv < 0) |
99 | goto abort; |
100 | data->in[1][i] = rv << 4; |
101 | |
102 | rv = i2c_smbus_read_byte_data(client, |
103 | ADC128_REG_IN_MAX(i)); |
104 | if (rv < 0) |
105 | goto abort; |
106 | data->in[2][i] = rv << 4; |
107 | } |
108 | |
109 | if (data->mode != 1) { |
110 | rv = i2c_smbus_read_word_swapped(client, |
111 | ADC128_REG_TEMP); |
112 | if (rv < 0) |
113 | goto abort; |
114 | data->temp[0] = rv >> 7; |
115 | |
116 | rv = i2c_smbus_read_byte_data(client, |
117 | ADC128_REG_TEMP_MAX); |
118 | if (rv < 0) |
119 | goto abort; |
120 | data->temp[1] = rv << 1; |
121 | |
122 | rv = i2c_smbus_read_byte_data(client, |
123 | ADC128_REG_TEMP_HYST); |
124 | if (rv < 0) |
125 | goto abort; |
126 | data->temp[2] = rv << 1; |
127 | } |
128 | |
129 | rv = i2c_smbus_read_byte_data(client, ADC128_REG_ALARM); |
130 | if (rv < 0) |
131 | goto abort; |
132 | data->alarms |= rv; |
133 | |
134 | data->last_updated = jiffies; |
135 | data->valid = true; |
136 | } |
137 | goto done; |
138 | |
139 | abort: |
140 | ret = ERR_PTR(error: rv); |
141 | data->valid = false; |
142 | done: |
143 | mutex_unlock(lock: &data->update_lock); |
144 | return ret; |
145 | } |
146 | |
147 | static ssize_t adc128_in_show(struct device *dev, |
148 | struct device_attribute *attr, char *buf) |
149 | { |
150 | struct adc128_data *data = adc128_update_device(dev); |
151 | int index = to_sensor_dev_attr_2(attr)->index; |
152 | int nr = to_sensor_dev_attr_2(attr)->nr; |
153 | int val; |
154 | |
155 | if (IS_ERR(ptr: data)) |
156 | return PTR_ERR(ptr: data); |
157 | |
158 | val = DIV_ROUND_CLOSEST(data->in[index][nr] * data->vref, 4095); |
159 | return sprintf(buf, fmt: "%d\n" , val); |
160 | } |
161 | |
162 | static ssize_t adc128_in_store(struct device *dev, |
163 | struct device_attribute *attr, const char *buf, |
164 | size_t count) |
165 | { |
166 | struct adc128_data *data = dev_get_drvdata(dev); |
167 | int index = to_sensor_dev_attr_2(attr)->index; |
168 | int nr = to_sensor_dev_attr_2(attr)->nr; |
169 | u8 reg, regval; |
170 | long val; |
171 | int err; |
172 | |
173 | err = kstrtol(s: buf, base: 10, res: &val); |
174 | if (err < 0) |
175 | return err; |
176 | |
177 | mutex_lock(&data->update_lock); |
178 | /* 10 mV LSB on limit registers */ |
179 | regval = clamp_val(DIV_ROUND_CLOSEST(val, 10), 0, 255); |
180 | data->in[index][nr] = regval << 4; |
181 | reg = index == 1 ? ADC128_REG_IN_MIN(nr) : ADC128_REG_IN_MAX(nr); |
182 | i2c_smbus_write_byte_data(client: data->client, command: reg, value: regval); |
183 | mutex_unlock(lock: &data->update_lock); |
184 | |
185 | return count; |
186 | } |
187 | |
188 | static ssize_t adc128_temp_show(struct device *dev, |
189 | struct device_attribute *attr, char *buf) |
190 | { |
191 | struct adc128_data *data = adc128_update_device(dev); |
192 | int index = to_sensor_dev_attr(attr)->index; |
193 | int temp; |
194 | |
195 | if (IS_ERR(ptr: data)) |
196 | return PTR_ERR(ptr: data); |
197 | |
198 | temp = sign_extend32(value: data->temp[index], index: 8); |
199 | return sprintf(buf, fmt: "%d\n" , temp * 500);/* 0.5 degrees C resolution */ |
200 | } |
201 | |
202 | static ssize_t adc128_temp_store(struct device *dev, |
203 | struct device_attribute *attr, |
204 | const char *buf, size_t count) |
205 | { |
206 | struct adc128_data *data = dev_get_drvdata(dev); |
207 | int index = to_sensor_dev_attr(attr)->index; |
208 | long val; |
209 | int err; |
210 | s8 regval; |
211 | |
212 | err = kstrtol(s: buf, base: 10, res: &val); |
213 | if (err < 0) |
214 | return err; |
215 | |
216 | mutex_lock(&data->update_lock); |
217 | regval = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127); |
218 | data->temp[index] = regval << 1; |
219 | i2c_smbus_write_byte_data(client: data->client, |
220 | command: index == 1 ? ADC128_REG_TEMP_MAX |
221 | : ADC128_REG_TEMP_HYST, |
222 | value: regval); |
223 | mutex_unlock(lock: &data->update_lock); |
224 | |
225 | return count; |
226 | } |
227 | |
228 | static ssize_t adc128_alarm_show(struct device *dev, |
229 | struct device_attribute *attr, char *buf) |
230 | { |
231 | struct adc128_data *data = adc128_update_device(dev); |
232 | int mask = 1 << to_sensor_dev_attr(attr)->index; |
233 | u8 alarms; |
234 | |
235 | if (IS_ERR(ptr: data)) |
236 | return PTR_ERR(ptr: data); |
237 | |
238 | /* |
239 | * Clear an alarm after reporting it to user space. If it is still |
240 | * active, the next update sequence will set the alarm bit again. |
241 | */ |
242 | alarms = data->alarms; |
243 | data->alarms &= ~mask; |
244 | |
245 | return sprintf(buf, fmt: "%u\n" , !!(alarms & mask)); |
246 | } |
247 | |
248 | static umode_t adc128_is_visible(struct kobject *kobj, |
249 | struct attribute *attr, int index) |
250 | { |
251 | struct device *dev = kobj_to_dev(kobj); |
252 | struct adc128_data *data = dev_get_drvdata(dev); |
253 | |
254 | if (index < ADC128_ATTR_NUM_VOLT) { |
255 | /* Voltage, visible according to num_inputs[] */ |
256 | if (index >= num_inputs[data->mode] * 4) |
257 | return 0; |
258 | } else { |
259 | /* Temperature, visible if not in mode 1 */ |
260 | if (data->mode == 1) |
261 | return 0; |
262 | } |
263 | |
264 | return attr->mode; |
265 | } |
266 | |
267 | static SENSOR_DEVICE_ATTR_2_RO(in0_input, adc128_in, 0, 0); |
268 | static SENSOR_DEVICE_ATTR_2_RW(in0_min, adc128_in, 0, 1); |
269 | static SENSOR_DEVICE_ATTR_2_RW(in0_max, adc128_in, 0, 2); |
270 | |
271 | static SENSOR_DEVICE_ATTR_2_RO(in1_input, adc128_in, 1, 0); |
272 | static SENSOR_DEVICE_ATTR_2_RW(in1_min, adc128_in, 1, 1); |
273 | static SENSOR_DEVICE_ATTR_2_RW(in1_max, adc128_in, 1, 2); |
274 | |
275 | static SENSOR_DEVICE_ATTR_2_RO(in2_input, adc128_in, 2, 0); |
276 | static SENSOR_DEVICE_ATTR_2_RW(in2_min, adc128_in, 2, 1); |
277 | static SENSOR_DEVICE_ATTR_2_RW(in2_max, adc128_in, 2, 2); |
278 | |
279 | static SENSOR_DEVICE_ATTR_2_RO(in3_input, adc128_in, 3, 0); |
280 | static SENSOR_DEVICE_ATTR_2_RW(in3_min, adc128_in, 3, 1); |
281 | static SENSOR_DEVICE_ATTR_2_RW(in3_max, adc128_in, 3, 2); |
282 | |
283 | static SENSOR_DEVICE_ATTR_2_RO(in4_input, adc128_in, 4, 0); |
284 | static SENSOR_DEVICE_ATTR_2_RW(in4_min, adc128_in, 4, 1); |
285 | static SENSOR_DEVICE_ATTR_2_RW(in4_max, adc128_in, 4, 2); |
286 | |
287 | static SENSOR_DEVICE_ATTR_2_RO(in5_input, adc128_in, 5, 0); |
288 | static SENSOR_DEVICE_ATTR_2_RW(in5_min, adc128_in, 5, 1); |
289 | static SENSOR_DEVICE_ATTR_2_RW(in5_max, adc128_in, 5, 2); |
290 | |
291 | static SENSOR_DEVICE_ATTR_2_RO(in6_input, adc128_in, 6, 0); |
292 | static SENSOR_DEVICE_ATTR_2_RW(in6_min, adc128_in, 6, 1); |
293 | static SENSOR_DEVICE_ATTR_2_RW(in6_max, adc128_in, 6, 2); |
294 | |
295 | static SENSOR_DEVICE_ATTR_2_RO(in7_input, adc128_in, 7, 0); |
296 | static SENSOR_DEVICE_ATTR_2_RW(in7_min, adc128_in, 7, 1); |
297 | static SENSOR_DEVICE_ATTR_2_RW(in7_max, adc128_in, 7, 2); |
298 | |
299 | static SENSOR_DEVICE_ATTR_RO(temp1_input, adc128_temp, 0); |
300 | static SENSOR_DEVICE_ATTR_RW(temp1_max, adc128_temp, 1); |
301 | static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, adc128_temp, 2); |
302 | |
303 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, adc128_alarm, 0); |
304 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, adc128_alarm, 1); |
305 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, adc128_alarm, 2); |
306 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, adc128_alarm, 3); |
307 | static SENSOR_DEVICE_ATTR_RO(in4_alarm, adc128_alarm, 4); |
308 | static SENSOR_DEVICE_ATTR_RO(in5_alarm, adc128_alarm, 5); |
309 | static SENSOR_DEVICE_ATTR_RO(in6_alarm, adc128_alarm, 6); |
310 | static SENSOR_DEVICE_ATTR_RO(in7_alarm, adc128_alarm, 7); |
311 | static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, adc128_alarm, 7); |
312 | |
313 | static struct attribute *adc128_attrs[] = { |
314 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
315 | &sensor_dev_attr_in0_input.dev_attr.attr, |
316 | &sensor_dev_attr_in0_max.dev_attr.attr, |
317 | &sensor_dev_attr_in0_min.dev_attr.attr, |
318 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
319 | &sensor_dev_attr_in1_input.dev_attr.attr, |
320 | &sensor_dev_attr_in1_max.dev_attr.attr, |
321 | &sensor_dev_attr_in1_min.dev_attr.attr, |
322 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
323 | &sensor_dev_attr_in2_input.dev_attr.attr, |
324 | &sensor_dev_attr_in2_max.dev_attr.attr, |
325 | &sensor_dev_attr_in2_min.dev_attr.attr, |
326 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
327 | &sensor_dev_attr_in3_input.dev_attr.attr, |
328 | &sensor_dev_attr_in3_max.dev_attr.attr, |
329 | &sensor_dev_attr_in3_min.dev_attr.attr, |
330 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
331 | &sensor_dev_attr_in4_input.dev_attr.attr, |
332 | &sensor_dev_attr_in4_max.dev_attr.attr, |
333 | &sensor_dev_attr_in4_min.dev_attr.attr, |
334 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
335 | &sensor_dev_attr_in5_input.dev_attr.attr, |
336 | &sensor_dev_attr_in5_max.dev_attr.attr, |
337 | &sensor_dev_attr_in5_min.dev_attr.attr, |
338 | &sensor_dev_attr_in6_alarm.dev_attr.attr, |
339 | &sensor_dev_attr_in6_input.dev_attr.attr, |
340 | &sensor_dev_attr_in6_max.dev_attr.attr, |
341 | &sensor_dev_attr_in6_min.dev_attr.attr, |
342 | &sensor_dev_attr_in7_alarm.dev_attr.attr, |
343 | &sensor_dev_attr_in7_input.dev_attr.attr, |
344 | &sensor_dev_attr_in7_max.dev_attr.attr, |
345 | &sensor_dev_attr_in7_min.dev_attr.attr, |
346 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
347 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
348 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, |
349 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, |
350 | NULL |
351 | }; |
352 | |
353 | static const struct attribute_group adc128_group = { |
354 | .attrs = adc128_attrs, |
355 | .is_visible = adc128_is_visible, |
356 | }; |
357 | __ATTRIBUTE_GROUPS(adc128); |
358 | |
359 | static int adc128_detect(struct i2c_client *client, struct i2c_board_info *info) |
360 | { |
361 | int man_id, dev_id; |
362 | |
363 | if (!i2c_check_functionality(adap: client->adapter, |
364 | I2C_FUNC_SMBUS_BYTE_DATA | |
365 | I2C_FUNC_SMBUS_WORD_DATA)) |
366 | return -ENODEV; |
367 | |
368 | man_id = i2c_smbus_read_byte_data(client, ADC128_REG_MAN_ID); |
369 | dev_id = i2c_smbus_read_byte_data(client, ADC128_REG_DEV_ID); |
370 | if (man_id != 0x01 || dev_id != 0x09) |
371 | return -ENODEV; |
372 | |
373 | /* Check unused bits for confirmation */ |
374 | if (i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG) & 0xf4) |
375 | return -ENODEV; |
376 | if (i2c_smbus_read_byte_data(client, ADC128_REG_CONV_RATE) & 0xfe) |
377 | return -ENODEV; |
378 | if (i2c_smbus_read_byte_data(client, ADC128_REG_ONESHOT) & 0xfe) |
379 | return -ENODEV; |
380 | if (i2c_smbus_read_byte_data(client, ADC128_REG_SHUTDOWN) & 0xfe) |
381 | return -ENODEV; |
382 | if (i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG_ADV) & 0xf8) |
383 | return -ENODEV; |
384 | if (i2c_smbus_read_byte_data(client, ADC128_REG_BUSY_STATUS) & 0xfc) |
385 | return -ENODEV; |
386 | |
387 | strscpy(p: info->type, q: "adc128d818" , I2C_NAME_SIZE); |
388 | |
389 | return 0; |
390 | } |
391 | |
392 | static int adc128_init_client(struct adc128_data *data) |
393 | { |
394 | struct i2c_client *client = data->client; |
395 | int err; |
396 | u8 regval = 0x0; |
397 | |
398 | /* |
399 | * Reset chip to defaults. |
400 | * This makes most other initializations unnecessary. |
401 | */ |
402 | err = i2c_smbus_write_byte_data(client, ADC128_REG_CONFIG, value: 0x80); |
403 | if (err) |
404 | return err; |
405 | |
406 | /* Set operation mode, if non-default */ |
407 | if (data->mode != 0) |
408 | regval |= data->mode << 1; |
409 | |
410 | /* If external vref is selected, configure the chip to use it */ |
411 | if (data->regulator) |
412 | regval |= 0x01; |
413 | |
414 | /* Write advanced configuration register */ |
415 | if (regval != 0x0) { |
416 | err = i2c_smbus_write_byte_data(client, ADC128_REG_CONFIG_ADV, |
417 | value: regval); |
418 | if (err) |
419 | return err; |
420 | } |
421 | |
422 | /* Start monitoring */ |
423 | err = i2c_smbus_write_byte_data(client, ADC128_REG_CONFIG, value: 0x01); |
424 | if (err) |
425 | return err; |
426 | |
427 | return 0; |
428 | } |
429 | |
430 | static int adc128_probe(struct i2c_client *client) |
431 | { |
432 | struct device *dev = &client->dev; |
433 | struct regulator *regulator; |
434 | struct device *hwmon_dev; |
435 | struct adc128_data *data; |
436 | int err, vref; |
437 | |
438 | data = devm_kzalloc(dev, size: sizeof(struct adc128_data), GFP_KERNEL); |
439 | if (!data) |
440 | return -ENOMEM; |
441 | |
442 | /* vref is optional. If specified, is used as chip reference voltage */ |
443 | regulator = devm_regulator_get_optional(dev, id: "vref" ); |
444 | if (!IS_ERR(ptr: regulator)) { |
445 | data->regulator = regulator; |
446 | err = regulator_enable(regulator); |
447 | if (err < 0) |
448 | return err; |
449 | vref = regulator_get_voltage(regulator); |
450 | if (vref < 0) { |
451 | err = vref; |
452 | goto error; |
453 | } |
454 | data->vref = DIV_ROUND_CLOSEST(vref, 1000); |
455 | } else { |
456 | data->vref = 2560; /* 2.56V, in mV */ |
457 | } |
458 | |
459 | /* Operation mode is optional. If unspecified, keep current mode */ |
460 | if (of_property_read_u8(np: dev->of_node, propname: "ti,mode" , out_value: &data->mode) == 0) { |
461 | if (data->mode > 3) { |
462 | dev_err(dev, "invalid operation mode %d\n" , |
463 | data->mode); |
464 | err = -EINVAL; |
465 | goto error; |
466 | } |
467 | } else { |
468 | err = i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG_ADV); |
469 | if (err < 0) |
470 | goto error; |
471 | data->mode = (err >> 1) & ADC128_REG_MASK; |
472 | } |
473 | |
474 | data->client = client; |
475 | i2c_set_clientdata(client, data); |
476 | mutex_init(&data->update_lock); |
477 | |
478 | /* Initialize the chip */ |
479 | err = adc128_init_client(data); |
480 | if (err < 0) |
481 | goto error; |
482 | |
483 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, name: client->name, |
484 | drvdata: data, groups: adc128_groups); |
485 | if (IS_ERR(ptr: hwmon_dev)) { |
486 | err = PTR_ERR(ptr: hwmon_dev); |
487 | goto error; |
488 | } |
489 | |
490 | return 0; |
491 | |
492 | error: |
493 | if (data->regulator) |
494 | regulator_disable(regulator: data->regulator); |
495 | return err; |
496 | } |
497 | |
498 | static void adc128_remove(struct i2c_client *client) |
499 | { |
500 | struct adc128_data *data = i2c_get_clientdata(client); |
501 | |
502 | if (data->regulator) |
503 | regulator_disable(regulator: data->regulator); |
504 | } |
505 | |
506 | static const struct i2c_device_id adc128_id[] = { |
507 | { "adc128d818" , 0 }, |
508 | { } |
509 | }; |
510 | MODULE_DEVICE_TABLE(i2c, adc128_id); |
511 | |
512 | static const struct of_device_id __maybe_unused adc128_of_match[] = { |
513 | { .compatible = "ti,adc128d818" }, |
514 | { }, |
515 | }; |
516 | MODULE_DEVICE_TABLE(of, adc128_of_match); |
517 | |
518 | static struct i2c_driver adc128_driver = { |
519 | .class = I2C_CLASS_HWMON, |
520 | .driver = { |
521 | .name = "adc128d818" , |
522 | .of_match_table = of_match_ptr(adc128_of_match), |
523 | }, |
524 | .probe = adc128_probe, |
525 | .remove = adc128_remove, |
526 | .id_table = adc128_id, |
527 | .detect = adc128_detect, |
528 | .address_list = normal_i2c, |
529 | }; |
530 | |
531 | module_i2c_driver(adc128_driver); |
532 | |
533 | MODULE_AUTHOR("Guenter Roeck" ); |
534 | MODULE_DESCRIPTION("Driver for ADC128D818" ); |
535 | MODULE_LICENSE("GPL" ); |
536 | |