Commit | Line | Data |
---|---|---|
74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
502b5a01 GR |
2 | /* |
3 | * Driver for Lineage Compact Power Line series of power entry modules. | |
4 | * | |
5 | * Copyright (C) 2010, 2011 Ericsson AB. | |
6 | * | |
7 | * Documentation: | |
8 | * http://www.lineagepower.com/oem/pdf/CPLI2C.pdf | |
502b5a01 GR |
9 | */ |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/err.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/hwmon.h> | |
18 | #include <linux/hwmon-sysfs.h> | |
dcd8f392 | 19 | #include <linux/jiffies.h> |
502b5a01 GR |
20 | |
21 | /* | |
22 | * This driver supports various Lineage Compact Power Line DC/DC and AC/DC | |
23 | * converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others. | |
24 | * | |
25 | * The devices are nominally PMBus compliant. However, most standard PMBus | |
26 | * commands are not supported. Specifically, all hardware monitoring and | |
27 | * status reporting commands are non-standard. For this reason, a standard | |
28 | * PMBus driver can not be used. | |
29 | * | |
30 | * All Lineage CPL devices have a built-in I2C bus master selector (PCA9541). | |
31 | * To ensure device access, this driver should only be used as client driver | |
32 | * to the pca9541 I2C master selector driver. | |
33 | */ | |
34 | ||
35 | /* Command codes */ | |
36 | #define PEM_OPERATION 0x01 | |
37 | #define PEM_CLEAR_INFO_FLAGS 0x03 | |
38 | #define PEM_VOUT_COMMAND 0x21 | |
39 | #define PEM_VOUT_OV_FAULT_LIMIT 0x40 | |
40 | #define PEM_READ_DATA_STRING 0xd0 | |
41 | #define PEM_READ_INPUT_STRING 0xdc | |
42 | #define PEM_READ_FIRMWARE_REV 0xdd | |
43 | #define PEM_READ_RUN_TIMER 0xde | |
44 | #define PEM_FAN_HI_SPEED 0xdf | |
45 | #define PEM_FAN_NORMAL_SPEED 0xe0 | |
46 | #define PEM_READ_FAN_SPEED 0xe1 | |
47 | ||
48 | /* offsets in data string */ | |
49 | #define PEM_DATA_STATUS_2 0 | |
50 | #define PEM_DATA_STATUS_1 1 | |
51 | #define PEM_DATA_ALARM_2 2 | |
52 | #define PEM_DATA_ALARM_1 3 | |
53 | #define PEM_DATA_VOUT_LSB 4 | |
54 | #define PEM_DATA_VOUT_MSB 5 | |
55 | #define PEM_DATA_CURRENT 6 | |
56 | #define PEM_DATA_TEMP 7 | |
57 | ||
58 | /* Virtual entries, to report constants */ | |
59 | #define PEM_DATA_TEMP_MAX 10 | |
60 | #define PEM_DATA_TEMP_CRIT 11 | |
61 | ||
62 | /* offsets in input string */ | |
63 | #define PEM_INPUT_VOLTAGE 0 | |
64 | #define PEM_INPUT_POWER_LSB 1 | |
65 | #define PEM_INPUT_POWER_MSB 2 | |
66 | ||
67 | /* offsets in fan data */ | |
68 | #define PEM_FAN_ADJUSTMENT 0 | |
69 | #define PEM_FAN_FAN1 1 | |
70 | #define PEM_FAN_FAN2 2 | |
71 | #define PEM_FAN_FAN3 3 | |
72 | ||
73 | /* Status register bits */ | |
74 | #define STS1_OUTPUT_ON (1 << 0) | |
75 | #define STS1_LEDS_FLASHING (1 << 1) | |
76 | #define STS1_EXT_FAULT (1 << 2) | |
77 | #define STS1_SERVICE_LED_ON (1 << 3) | |
78 | #define STS1_SHUTDOWN_OCCURRED (1 << 4) | |
79 | #define STS1_INT_FAULT (1 << 5) | |
80 | #define STS1_ISOLATION_TEST_OK (1 << 6) | |
81 | ||
82 | #define STS2_ENABLE_PIN_HI (1 << 0) | |
83 | #define STS2_DATA_OUT_RANGE (1 << 1) | |
84 | #define STS2_RESTARTED_OK (1 << 1) | |
85 | #define STS2_ISOLATION_TEST_FAIL (1 << 3) | |
86 | #define STS2_HIGH_POWER_CAP (1 << 4) | |
87 | #define STS2_INVALID_INSTR (1 << 5) | |
88 | #define STS2_WILL_RESTART (1 << 6) | |
89 | #define STS2_PEC_ERR (1 << 7) | |
90 | ||
91 | /* Alarm register bits */ | |
92 | #define ALRM1_VIN_OUT_LIMIT (1 << 0) | |
93 | #define ALRM1_VOUT_OUT_LIMIT (1 << 1) | |
94 | #define ALRM1_OV_VOLT_SHUTDOWN (1 << 2) | |
95 | #define ALRM1_VIN_OVERCURRENT (1 << 3) | |
96 | #define ALRM1_TEMP_WARNING (1 << 4) | |
97 | #define ALRM1_TEMP_SHUTDOWN (1 << 5) | |
98 | #define ALRM1_PRIMARY_FAULT (1 << 6) | |
99 | #define ALRM1_POWER_LIMIT (1 << 7) | |
100 | ||
101 | #define ALRM2_5V_OUT_LIMIT (1 << 1) | |
102 | #define ALRM2_TEMP_FAULT (1 << 2) | |
103 | #define ALRM2_OV_LOW (1 << 3) | |
104 | #define ALRM2_DCDC_TEMP_HIGH (1 << 4) | |
105 | #define ALRM2_PRI_TEMP_HIGH (1 << 5) | |
106 | #define ALRM2_NO_PRIMARY (1 << 6) | |
107 | #define ALRM2_FAN_FAULT (1 << 7) | |
108 | ||
109 | #define FIRMWARE_REV_LEN 4 | |
110 | #define DATA_STRING_LEN 9 | |
111 | #define INPUT_STRING_LEN 5 /* 4 for most devices */ | |
112 | #define FAN_SPEED_LEN 5 | |
113 | ||
114 | struct pem_data { | |
82803252 AL |
115 | struct i2c_client *client; |
116 | const struct attribute_group *groups[4]; | |
502b5a01 GR |
117 | |
118 | struct mutex update_lock; | |
119 | bool valid; | |
120 | bool fans_supported; | |
121 | int input_length; | |
122 | unsigned long last_updated; /* in jiffies */ | |
123 | ||
124 | u8 firmware_rev[FIRMWARE_REV_LEN]; | |
125 | u8 data_string[DATA_STRING_LEN]; | |
126 | u8 input_string[INPUT_STRING_LEN]; | |
127 | u8 fan_speed[FAN_SPEED_LEN]; | |
128 | }; | |
129 | ||
130 | static int pem_read_block(struct i2c_client *client, u8 command, u8 *data, | |
131 | int data_len) | |
132 | { | |
133 | u8 block_buffer[I2C_SMBUS_BLOCK_MAX]; | |
134 | int result; | |
135 | ||
136 | result = i2c_smbus_read_block_data(client, command, block_buffer); | |
137 | if (unlikely(result < 0)) | |
138 | goto abort; | |
139 | if (unlikely(result == 0xff || result != data_len)) { | |
140 | result = -EIO; | |
141 | goto abort; | |
142 | } | |
143 | memcpy(data, block_buffer, data_len); | |
144 | result = 0; | |
145 | abort: | |
146 | return result; | |
147 | } | |
148 | ||
149 | static struct pem_data *pem_update_device(struct device *dev) | |
150 | { | |
82803252 AL |
151 | struct pem_data *data = dev_get_drvdata(dev); |
152 | struct i2c_client *client = data->client; | |
502b5a01 GR |
153 | struct pem_data *ret = data; |
154 | ||
155 | mutex_lock(&data->update_lock); | |
156 | ||
157 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
158 | int result; | |
159 | ||
160 | /* Read data string */ | |
161 | result = pem_read_block(client, PEM_READ_DATA_STRING, | |
162 | data->data_string, | |
163 | sizeof(data->data_string)); | |
164 | if (unlikely(result < 0)) { | |
165 | ret = ERR_PTR(result); | |
166 | goto abort; | |
167 | } | |
168 | ||
169 | /* Read input string */ | |
170 | if (data->input_length) { | |
171 | result = pem_read_block(client, PEM_READ_INPUT_STRING, | |
172 | data->input_string, | |
173 | data->input_length); | |
174 | if (unlikely(result < 0)) { | |
175 | ret = ERR_PTR(result); | |
176 | goto abort; | |
177 | } | |
178 | } | |
179 | ||
180 | /* Read fan speeds */ | |
181 | if (data->fans_supported) { | |
182 | result = pem_read_block(client, PEM_READ_FAN_SPEED, | |
183 | data->fan_speed, | |
184 | sizeof(data->fan_speed)); | |
185 | if (unlikely(result < 0)) { | |
186 | ret = ERR_PTR(result); | |
187 | goto abort; | |
188 | } | |
189 | } | |
190 | ||
191 | i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS); | |
192 | ||
193 | data->last_updated = jiffies; | |
952a11ca | 194 | data->valid = true; |
502b5a01 GR |
195 | } |
196 | abort: | |
197 | mutex_unlock(&data->update_lock); | |
198 | return ret; | |
199 | } | |
200 | ||
201 | static long pem_get_data(u8 *data, int len, int index) | |
202 | { | |
203 | long val; | |
204 | ||
205 | switch (index) { | |
206 | case PEM_DATA_VOUT_LSB: | |
207 | val = (data[index] + (data[index+1] << 8)) * 5 / 2; | |
208 | break; | |
209 | case PEM_DATA_CURRENT: | |
210 | val = data[index] * 200; | |
211 | break; | |
212 | case PEM_DATA_TEMP: | |
213 | val = data[index] * 1000; | |
214 | break; | |
215 | case PEM_DATA_TEMP_MAX: | |
216 | val = 97 * 1000; /* 97 degrees C per datasheet */ | |
217 | break; | |
218 | case PEM_DATA_TEMP_CRIT: | |
219 | val = 107 * 1000; /* 107 degrees C per datasheet */ | |
220 | break; | |
221 | default: | |
222 | WARN_ON_ONCE(1); | |
223 | val = 0; | |
224 | } | |
225 | return val; | |
226 | } | |
227 | ||
228 | static long pem_get_input(u8 *data, int len, int index) | |
229 | { | |
230 | long val; | |
231 | ||
232 | switch (index) { | |
233 | case PEM_INPUT_VOLTAGE: | |
234 | if (len == INPUT_STRING_LEN) | |
235 | val = (data[index] + (data[index+1] << 8) - 75) * 1000; | |
236 | else | |
237 | val = (data[index] - 75) * 1000; | |
238 | break; | |
239 | case PEM_INPUT_POWER_LSB: | |
240 | if (len == INPUT_STRING_LEN) | |
241 | index++; | |
242 | val = (data[index] + (data[index+1] << 8)) * 1000000L; | |
243 | break; | |
244 | default: | |
245 | WARN_ON_ONCE(1); | |
246 | val = 0; | |
247 | } | |
248 | return val; | |
249 | } | |
250 | ||
251 | static long pem_get_fan(u8 *data, int len, int index) | |
252 | { | |
253 | long val; | |
254 | ||
255 | switch (index) { | |
256 | case PEM_FAN_FAN1: | |
257 | case PEM_FAN_FAN2: | |
258 | case PEM_FAN_FAN3: | |
259 | val = data[index] * 100; | |
260 | break; | |
261 | default: | |
262 | WARN_ON_ONCE(1); | |
263 | val = 0; | |
264 | } | |
265 | return val; | |
266 | } | |
267 | ||
268 | /* | |
269 | * Show boolean, either a fault or an alarm. | |
270 | * .nr points to the register, .index is the bit mask to check | |
271 | */ | |
6ccf6a83 GR |
272 | static ssize_t pem_bool_show(struct device *dev, struct device_attribute *da, |
273 | char *buf) | |
502b5a01 GR |
274 | { |
275 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(da); | |
276 | struct pem_data *data = pem_update_device(dev); | |
277 | u8 status; | |
278 | ||
279 | if (IS_ERR(data)) | |
280 | return PTR_ERR(data); | |
281 | ||
282 | status = data->data_string[attr->nr] & attr->index; | |
1f4d4af4 | 283 | return sysfs_emit(buf, "%d\n", !!status); |
502b5a01 GR |
284 | } |
285 | ||
6ccf6a83 | 286 | static ssize_t pem_data_show(struct device *dev, struct device_attribute *da, |
502b5a01 GR |
287 | char *buf) |
288 | { | |
289 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
290 | struct pem_data *data = pem_update_device(dev); | |
291 | long value; | |
292 | ||
293 | if (IS_ERR(data)) | |
294 | return PTR_ERR(data); | |
295 | ||
296 | value = pem_get_data(data->data_string, sizeof(data->data_string), | |
297 | attr->index); | |
298 | ||
1f4d4af4 | 299 | return sysfs_emit(buf, "%ld\n", value); |
502b5a01 GR |
300 | } |
301 | ||
6ccf6a83 | 302 | static ssize_t pem_input_show(struct device *dev, struct device_attribute *da, |
502b5a01 GR |
303 | char *buf) |
304 | { | |
305 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
306 | struct pem_data *data = pem_update_device(dev); | |
307 | long value; | |
308 | ||
309 | if (IS_ERR(data)) | |
310 | return PTR_ERR(data); | |
311 | ||
312 | value = pem_get_input(data->input_string, sizeof(data->input_string), | |
313 | attr->index); | |
314 | ||
1f4d4af4 | 315 | return sysfs_emit(buf, "%ld\n", value); |
502b5a01 GR |
316 | } |
317 | ||
6ccf6a83 | 318 | static ssize_t pem_fan_show(struct device *dev, struct device_attribute *da, |
502b5a01 GR |
319 | char *buf) |
320 | { | |
321 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
322 | struct pem_data *data = pem_update_device(dev); | |
323 | long value; | |
324 | ||
325 | if (IS_ERR(data)) | |
326 | return PTR_ERR(data); | |
327 | ||
328 | value = pem_get_fan(data->fan_speed, sizeof(data->fan_speed), | |
329 | attr->index); | |
330 | ||
1f4d4af4 | 331 | return sysfs_emit(buf, "%ld\n", value); |
502b5a01 GR |
332 | } |
333 | ||
334 | /* Voltages */ | |
6ccf6a83 GR |
335 | static SENSOR_DEVICE_ATTR_RO(in1_input, pem_data, PEM_DATA_VOUT_LSB); |
336 | static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, pem_bool, PEM_DATA_ALARM_1, | |
337 | ALRM1_VOUT_OUT_LIMIT); | |
338 | static SENSOR_DEVICE_ATTR_2_RO(in1_crit_alarm, pem_bool, PEM_DATA_ALARM_1, | |
339 | ALRM1_OV_VOLT_SHUTDOWN); | |
340 | static SENSOR_DEVICE_ATTR_RO(in2_input, pem_input, PEM_INPUT_VOLTAGE); | |
341 | static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, pem_bool, PEM_DATA_ALARM_1, | |
342 | ALRM1_VIN_OUT_LIMIT | ALRM1_PRIMARY_FAULT); | |
502b5a01 GR |
343 | |
344 | /* Currents */ | |
6ccf6a83 GR |
345 | static SENSOR_DEVICE_ATTR_RO(curr1_input, pem_data, PEM_DATA_CURRENT); |
346 | static SENSOR_DEVICE_ATTR_2_RO(curr1_alarm, pem_bool, PEM_DATA_ALARM_1, | |
347 | ALRM1_VIN_OVERCURRENT); | |
502b5a01 GR |
348 | |
349 | /* Power */ | |
6ccf6a83 GR |
350 | static SENSOR_DEVICE_ATTR_RO(power1_input, pem_input, PEM_INPUT_POWER_LSB); |
351 | static SENSOR_DEVICE_ATTR_2_RO(power1_alarm, pem_bool, PEM_DATA_ALARM_1, | |
352 | ALRM1_POWER_LIMIT); | |
502b5a01 GR |
353 | |
354 | /* Fans */ | |
6ccf6a83 GR |
355 | static SENSOR_DEVICE_ATTR_RO(fan1_input, pem_fan, PEM_FAN_FAN1); |
356 | static SENSOR_DEVICE_ATTR_RO(fan2_input, pem_fan, PEM_FAN_FAN2); | |
357 | static SENSOR_DEVICE_ATTR_RO(fan3_input, pem_fan, PEM_FAN_FAN3); | |
358 | static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, pem_bool, PEM_DATA_ALARM_2, | |
359 | ALRM2_FAN_FAULT); | |
502b5a01 GR |
360 | |
361 | /* Temperatures */ | |
6ccf6a83 GR |
362 | static SENSOR_DEVICE_ATTR_RO(temp1_input, pem_data, PEM_DATA_TEMP); |
363 | static SENSOR_DEVICE_ATTR_RO(temp1_max, pem_data, PEM_DATA_TEMP_MAX); | |
364 | static SENSOR_DEVICE_ATTR_RO(temp1_crit, pem_data, PEM_DATA_TEMP_CRIT); | |
365 | static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, pem_bool, PEM_DATA_ALARM_1, | |
366 | ALRM1_TEMP_WARNING); | |
367 | static SENSOR_DEVICE_ATTR_2_RO(temp1_crit_alarm, pem_bool, PEM_DATA_ALARM_1, | |
368 | ALRM1_TEMP_SHUTDOWN); | |
369 | static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, pem_bool, PEM_DATA_ALARM_2, | |
370 | ALRM2_TEMP_FAULT); | |
502b5a01 GR |
371 | |
372 | static struct attribute *pem_attributes[] = { | |
373 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
d668a8b0 | 374 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
502b5a01 GR |
375 | &sensor_dev_attr_in1_crit_alarm.dev_attr.attr, |
376 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
377 | ||
378 | &sensor_dev_attr_curr1_alarm.dev_attr.attr, | |
379 | ||
380 | &sensor_dev_attr_power1_alarm.dev_attr.attr, | |
381 | ||
382 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
383 | ||
384 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
385 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
386 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
387 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
388 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, | |
389 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
390 | ||
391 | NULL, | |
392 | }; | |
393 | ||
394 | static const struct attribute_group pem_group = { | |
395 | .attrs = pem_attributes, | |
396 | }; | |
397 | ||
398 | static struct attribute *pem_input_attributes[] = { | |
399 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
400 | &sensor_dev_attr_curr1_input.dev_attr.attr, | |
401 | &sensor_dev_attr_power1_input.dev_attr.attr, | |
df069079 | 402 | NULL |
502b5a01 GR |
403 | }; |
404 | ||
405 | static const struct attribute_group pem_input_group = { | |
406 | .attrs = pem_input_attributes, | |
407 | }; | |
408 | ||
409 | static struct attribute *pem_fan_attributes[] = { | |
410 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
411 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
412 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
df069079 | 413 | NULL |
502b5a01 GR |
414 | }; |
415 | ||
416 | static const struct attribute_group pem_fan_group = { | |
417 | .attrs = pem_fan_attributes, | |
418 | }; | |
419 | ||
67487038 | 420 | static int pem_probe(struct i2c_client *client) |
502b5a01 GR |
421 | { |
422 | struct i2c_adapter *adapter = client->adapter; | |
82803252 AL |
423 | struct device *dev = &client->dev; |
424 | struct device *hwmon_dev; | |
502b5a01 | 425 | struct pem_data *data; |
82803252 | 426 | int ret, idx = 0; |
502b5a01 GR |
427 | |
428 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BLOCK_DATA | |
429 | | I2C_FUNC_SMBUS_WRITE_BYTE)) | |
430 | return -ENODEV; | |
431 | ||
82803252 | 432 | data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); |
502b5a01 GR |
433 | if (!data) |
434 | return -ENOMEM; | |
435 | ||
82803252 | 436 | data->client = client; |
502b5a01 GR |
437 | mutex_init(&data->update_lock); |
438 | ||
439 | /* | |
440 | * We use the next two commands to determine if the device is really | |
441 | * there. | |
442 | */ | |
443 | ret = pem_read_block(client, PEM_READ_FIRMWARE_REV, | |
444 | data->firmware_rev, sizeof(data->firmware_rev)); | |
445 | if (ret < 0) | |
07404aab | 446 | return ret; |
502b5a01 GR |
447 | |
448 | ret = i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS); | |
449 | if (ret < 0) | |
07404aab | 450 | return ret; |
502b5a01 | 451 | |
82803252 | 452 | dev_info(dev, "Firmware revision %d.%d.%d\n", |
502b5a01 GR |
453 | data->firmware_rev[0], data->firmware_rev[1], |
454 | data->firmware_rev[2]); | |
455 | ||
82803252 AL |
456 | /* sysfs hooks */ |
457 | data->groups[idx++] = &pem_group; | |
502b5a01 GR |
458 | |
459 | /* | |
460 | * Check if input readings are supported. | |
461 | * This is the case if we can read input data, | |
462 | * and if the returned data is not all zeros. | |
463 | * Note that input alarms are always supported. | |
464 | */ | |
465 | ret = pem_read_block(client, PEM_READ_INPUT_STRING, | |
466 | data->input_string, | |
467 | sizeof(data->input_string) - 1); | |
468 | if (!ret && (data->input_string[0] || data->input_string[1] || | |
469 | data->input_string[2])) | |
470 | data->input_length = sizeof(data->input_string) - 1; | |
471 | else if (ret < 0) { | |
472 | /* Input string is one byte longer for some devices */ | |
473 | ret = pem_read_block(client, PEM_READ_INPUT_STRING, | |
474 | data->input_string, | |
475 | sizeof(data->input_string)); | |
476 | if (!ret && (data->input_string[0] || data->input_string[1] || | |
477 | data->input_string[2] || data->input_string[3])) | |
478 | data->input_length = sizeof(data->input_string); | |
479 | } | |
82803252 AL |
480 | |
481 | if (data->input_length) | |
482 | data->groups[idx++] = &pem_input_group; | |
502b5a01 GR |
483 | |
484 | /* | |
485 | * Check if fan speed readings are supported. | |
486 | * This is the case if we can read fan speed data, | |
487 | * and if the returned data is not all zeros. | |
488 | * Note that the fan alarm is always supported. | |
489 | */ | |
490 | ret = pem_read_block(client, PEM_READ_FAN_SPEED, | |
491 | data->fan_speed, | |
492 | sizeof(data->fan_speed)); | |
493 | if (!ret && (data->fan_speed[0] || data->fan_speed[1] || | |
494 | data->fan_speed[2] || data->fan_speed[3])) { | |
495 | data->fans_supported = true; | |
82803252 | 496 | data->groups[idx++] = &pem_fan_group; |
502b5a01 GR |
497 | } |
498 | ||
82803252 AL |
499 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
500 | data, data->groups); | |
501 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
502b5a01 GR |
502 | } |
503 | ||
504 | static const struct i2c_device_id pem_id[] = { | |
505 | {"lineage_pem", 0}, | |
506 | {} | |
507 | }; | |
508 | MODULE_DEVICE_TABLE(i2c, pem_id); | |
509 | ||
510 | static struct i2c_driver pem_driver = { | |
511 | .driver = { | |
512 | .name = "lineage_pem", | |
513 | }, | |
1975d167 | 514 | .probe = pem_probe, |
502b5a01 GR |
515 | .id_table = pem_id, |
516 | }; | |
517 | ||
f0967eea | 518 | module_i2c_driver(pem_driver); |
502b5a01 | 519 | |
bb9a80e5 | 520 | MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>"); |
502b5a01 GR |
521 | MODULE_DESCRIPTION("Lineage CPL PEM hardware monitoring driver"); |
522 | MODULE_LICENSE("GPL"); |