Commit | Line | Data |
---|---|---|
c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
aaf6fabf CP |
2 | /* |
3 | * tc654.c - Linux kernel modules for fan speed controller | |
4 | * | |
5 | * Copyright (C) 2016 Allied Telesis Labs NZ | |
aaf6fabf CP |
6 | */ |
7 | ||
8 | #include <linux/bitops.h> | |
9 | #include <linux/err.h> | |
10 | #include <linux/hwmon.h> | |
11 | #include <linux/hwmon-sysfs.h> | |
12 | #include <linux/i2c.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/jiffies.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/mutex.h> | |
17 | #include <linux/slab.h> | |
99cb5e9f | 18 | #include <linux/thermal.h> |
aaf6fabf CP |
19 | #include <linux/util_macros.h> |
20 | ||
21 | enum tc654_regs { | |
22 | TC654_REG_RPM1 = 0x00, /* RPM Output 1 */ | |
23 | TC654_REG_RPM2 = 0x01, /* RPM Output 2 */ | |
24 | TC654_REG_FAN_FAULT1 = 0x02, /* Fan Fault 1 Threshold */ | |
25 | TC654_REG_FAN_FAULT2 = 0x03, /* Fan Fault 2 Threshold */ | |
26 | TC654_REG_CONFIG = 0x04, /* Configuration */ | |
27 | TC654_REG_STATUS = 0x05, /* Status */ | |
28 | TC654_REG_DUTY_CYCLE = 0x06, /* Fan Speed Duty Cycle */ | |
29 | TC654_REG_MFR_ID = 0x07, /* Manufacturer Identification */ | |
30 | TC654_REG_VER_ID = 0x08, /* Version Identification */ | |
31 | }; | |
32 | ||
33 | /* Macros to easily index the registers */ | |
34 | #define TC654_REG_RPM(idx) (TC654_REG_RPM1 + (idx)) | |
35 | #define TC654_REG_FAN_FAULT(idx) (TC654_REG_FAN_FAULT1 + (idx)) | |
36 | ||
37 | /* Config register bits */ | |
38 | #define TC654_REG_CONFIG_RES BIT(6) /* Resolution Selection */ | |
39 | #define TC654_REG_CONFIG_DUTYC BIT(5) /* Duty Cycle Control */ | |
40 | #define TC654_REG_CONFIG_SDM BIT(0) /* Shutdown Mode */ | |
41 | ||
42 | /* Status register bits */ | |
43 | #define TC654_REG_STATUS_F2F BIT(1) /* Fan 2 Fault */ | |
44 | #define TC654_REG_STATUS_F1F BIT(0) /* Fan 1 Fault */ | |
45 | ||
46 | /* RPM resolution for RPM Output registers */ | |
47 | #define TC654_HIGH_RPM_RESOLUTION 25 /* 25 RPM resolution */ | |
48 | #define TC654_LOW_RPM_RESOLUTION 50 /* 50 RPM resolution */ | |
49 | ||
50 | /* Convert to the fan fault RPM threshold from register value */ | |
51 | #define TC654_FAN_FAULT_FROM_REG(val) ((val) * 50) /* 50 RPM resolution */ | |
52 | ||
53 | /* Convert to register value from the fan fault RPM threshold */ | |
54 | #define TC654_FAN_FAULT_TO_REG(val) (((val) / 50) & 0xff) | |
55 | ||
56 | /* Register data is read (and cached) at most once per second. */ | |
57 | #define TC654_UPDATE_INTERVAL HZ | |
58 | ||
59 | struct tc654_data { | |
60 | struct i2c_client *client; | |
61 | ||
62 | /* update mutex */ | |
63 | struct mutex update_lock; | |
64 | ||
65 | /* tc654 register cache */ | |
66 | bool valid; | |
67 | unsigned long last_updated; /* in jiffies */ | |
68 | ||
69 | u8 rpm_output[2]; /* The fan RPM data for fans 1 and 2 is then | |
70 | * written to registers RPM1 and RPM2 | |
71 | */ | |
72 | u8 fan_fault[2]; /* The Fan Fault Threshold Registers are used to | |
73 | * set the fan fault threshold levels for fan 1 | |
74 | * and fan 2 | |
75 | */ | |
76 | u8 config; /* The Configuration Register is an 8-bit read/ | |
77 | * writable multi-function control register | |
78 | * 7: Fan Fault Clear | |
79 | * 1 = Clear Fan Fault | |
80 | * 0 = Normal Operation (default) | |
81 | * 6: Resolution Selection for RPM Output Registers | |
82 | * RPM Output Registers (RPM1 and RPM2) will be | |
83 | * set for | |
84 | * 1 = 25 RPM (9-bit) resolution | |
85 | * 0 = 50 RPM (8-bit) resolution (default) | |
86 | * 5: Duty Cycle Control Method | |
87 | * The V OUT duty cycle will be controlled via | |
88 | * 1 = the SMBus interface. | |
89 | * 0 = via the V IN analog input pin. (default) | |
90 | * 4,3: Fan 2 Pulses Per Rotation | |
91 | * 00 = 1 | |
92 | * 01 = 2 (default) | |
93 | * 10 = 4 | |
94 | * 11 = 8 | |
95 | * 2,1: Fan 1 Pulses Per Rotation | |
96 | * 00 = 1 | |
97 | * 01 = 2 (default) | |
98 | * 10 = 4 | |
99 | * 11 = 8 | |
100 | * 0: Shutdown Mode | |
101 | * 1 = Shutdown mode. | |
102 | * 0 = Normal operation. (default) | |
103 | */ | |
104 | u8 status; /* The Status register provides all the information | |
105 | * about what is going on within the TC654/TC655 | |
106 | * devices. | |
107 | * 7,6: Unimplemented, Read as '0' | |
108 | * 5: Over-Temperature Fault Condition | |
109 | * 1 = Over-Temperature condition has occurred | |
110 | * 0 = Normal operation. V IN is less than 2.6V | |
111 | * 4: RPM2 Counter Overflow | |
112 | * 1 = Fault condition | |
113 | * 0 = Normal operation | |
114 | * 3: RPM1 Counter Overflow | |
115 | * 1 = Fault condition | |
116 | * 0 = Normal operation | |
117 | * 2: V IN Input Status | |
118 | * 1 = V IN is open | |
119 | * 0 = Normal operation. voltage present at V IN | |
120 | * 1: Fan 2 Fault | |
121 | * 1 = Fault condition | |
122 | * 0 = Normal operation | |
123 | * 0: Fan 1 Fault | |
124 | * 1 = Fault condition | |
125 | * 0 = Normal operation | |
126 | */ | |
127 | u8 duty_cycle; /* The DUTY_CYCLE register is a 4-bit read/ | |
128 | * writable register used to control the duty | |
129 | * cycle of the V OUT output. | |
130 | */ | |
131 | }; | |
132 | ||
133 | /* helper to grab and cache data, at most one time per second */ | |
134 | static struct tc654_data *tc654_update_client(struct device *dev) | |
135 | { | |
136 | struct tc654_data *data = dev_get_drvdata(dev); | |
137 | struct i2c_client *client = data->client; | |
138 | int ret = 0; | |
139 | ||
140 | mutex_lock(&data->update_lock); | |
141 | if (time_before(jiffies, data->last_updated + TC654_UPDATE_INTERVAL) && | |
142 | likely(data->valid)) | |
143 | goto out; | |
144 | ||
145 | ret = i2c_smbus_read_byte_data(client, TC654_REG_RPM(0)); | |
146 | if (ret < 0) | |
147 | goto out; | |
148 | data->rpm_output[0] = ret; | |
149 | ||
150 | ret = i2c_smbus_read_byte_data(client, TC654_REG_RPM(1)); | |
151 | if (ret < 0) | |
152 | goto out; | |
153 | data->rpm_output[1] = ret; | |
154 | ||
155 | ret = i2c_smbus_read_byte_data(client, TC654_REG_FAN_FAULT(0)); | |
156 | if (ret < 0) | |
157 | goto out; | |
158 | data->fan_fault[0] = ret; | |
159 | ||
160 | ret = i2c_smbus_read_byte_data(client, TC654_REG_FAN_FAULT(1)); | |
161 | if (ret < 0) | |
162 | goto out; | |
163 | data->fan_fault[1] = ret; | |
164 | ||
165 | ret = i2c_smbus_read_byte_data(client, TC654_REG_CONFIG); | |
166 | if (ret < 0) | |
167 | goto out; | |
168 | data->config = ret; | |
169 | ||
170 | ret = i2c_smbus_read_byte_data(client, TC654_REG_STATUS); | |
171 | if (ret < 0) | |
172 | goto out; | |
173 | data->status = ret; | |
174 | ||
175 | ret = i2c_smbus_read_byte_data(client, TC654_REG_DUTY_CYCLE); | |
176 | if (ret < 0) | |
177 | goto out; | |
178 | data->duty_cycle = ret & 0x0f; | |
179 | ||
180 | data->last_updated = jiffies; | |
181 | data->valid = true; | |
182 | out: | |
183 | mutex_unlock(&data->update_lock); | |
184 | ||
185 | if (ret < 0) /* upon error, encode it in return value */ | |
186 | data = ERR_PTR(ret); | |
187 | ||
188 | return data; | |
189 | } | |
190 | ||
191 | /* | |
192 | * sysfs attributes | |
193 | */ | |
194 | ||
1acd2e29 | 195 | static ssize_t fan_show(struct device *dev, struct device_attribute *da, |
aaf6fabf CP |
196 | char *buf) |
197 | { | |
198 | int nr = to_sensor_dev_attr(da)->index; | |
199 | struct tc654_data *data = tc654_update_client(dev); | |
200 | int val; | |
201 | ||
202 | if (IS_ERR(data)) | |
203 | return PTR_ERR(data); | |
204 | ||
205 | if (data->config & TC654_REG_CONFIG_RES) | |
206 | val = data->rpm_output[nr] * TC654_HIGH_RPM_RESOLUTION; | |
207 | else | |
208 | val = data->rpm_output[nr] * TC654_LOW_RPM_RESOLUTION; | |
209 | ||
210 | return sprintf(buf, "%d\n", val); | |
211 | } | |
212 | ||
1acd2e29 | 213 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *da, |
aaf6fabf CP |
214 | char *buf) |
215 | { | |
216 | int nr = to_sensor_dev_attr(da)->index; | |
217 | struct tc654_data *data = tc654_update_client(dev); | |
218 | ||
219 | if (IS_ERR(data)) | |
220 | return PTR_ERR(data); | |
221 | ||
222 | return sprintf(buf, "%d\n", | |
223 | TC654_FAN_FAULT_FROM_REG(data->fan_fault[nr])); | |
224 | } | |
225 | ||
1acd2e29 GR |
226 | static ssize_t fan_min_store(struct device *dev, struct device_attribute *da, |
227 | const char *buf, size_t count) | |
aaf6fabf CP |
228 | { |
229 | int nr = to_sensor_dev_attr(da)->index; | |
230 | struct tc654_data *data = dev_get_drvdata(dev); | |
231 | struct i2c_client *client = data->client; | |
232 | unsigned long val; | |
233 | int ret; | |
234 | ||
235 | if (kstrtoul(buf, 10, &val)) | |
236 | return -EINVAL; | |
237 | ||
238 | val = clamp_val(val, 0, 12750); | |
239 | ||
240 | mutex_lock(&data->update_lock); | |
241 | ||
242 | data->fan_fault[nr] = TC654_FAN_FAULT_TO_REG(val); | |
243 | ret = i2c_smbus_write_byte_data(client, TC654_REG_FAN_FAULT(nr), | |
244 | data->fan_fault[nr]); | |
245 | ||
246 | mutex_unlock(&data->update_lock); | |
247 | return ret < 0 ? ret : count; | |
248 | } | |
249 | ||
1acd2e29 | 250 | static ssize_t fan_alarm_show(struct device *dev, struct device_attribute *da, |
aaf6fabf CP |
251 | char *buf) |
252 | { | |
253 | int nr = to_sensor_dev_attr(da)->index; | |
254 | struct tc654_data *data = tc654_update_client(dev); | |
255 | int val; | |
256 | ||
257 | if (IS_ERR(data)) | |
258 | return PTR_ERR(data); | |
259 | ||
260 | if (nr == 0) | |
261 | val = !!(data->status & TC654_REG_STATUS_F1F); | |
262 | else | |
263 | val = !!(data->status & TC654_REG_STATUS_F2F); | |
264 | ||
265 | return sprintf(buf, "%d\n", val); | |
266 | } | |
267 | ||
268 | static const u8 TC654_FAN_PULSE_SHIFT[] = { 1, 3 }; | |
269 | ||
1acd2e29 GR |
270 | static ssize_t fan_pulses_show(struct device *dev, |
271 | struct device_attribute *da, char *buf) | |
aaf6fabf CP |
272 | { |
273 | int nr = to_sensor_dev_attr(da)->index; | |
274 | struct tc654_data *data = tc654_update_client(dev); | |
275 | u8 val; | |
276 | ||
277 | if (IS_ERR(data)) | |
278 | return PTR_ERR(data); | |
279 | ||
280 | val = BIT((data->config >> TC654_FAN_PULSE_SHIFT[nr]) & 0x03); | |
281 | return sprintf(buf, "%d\n", val); | |
282 | } | |
283 | ||
1acd2e29 GR |
284 | static ssize_t fan_pulses_store(struct device *dev, |
285 | struct device_attribute *da, const char *buf, | |
286 | size_t count) | |
aaf6fabf CP |
287 | { |
288 | int nr = to_sensor_dev_attr(da)->index; | |
289 | struct tc654_data *data = dev_get_drvdata(dev); | |
290 | struct i2c_client *client = data->client; | |
291 | u8 config; | |
292 | unsigned long val; | |
293 | int ret; | |
294 | ||
295 | if (kstrtoul(buf, 10, &val)) | |
296 | return -EINVAL; | |
297 | ||
298 | switch (val) { | |
299 | case 1: | |
300 | config = 0; | |
301 | break; | |
302 | case 2: | |
303 | config = 1; | |
304 | break; | |
305 | case 4: | |
306 | config = 2; | |
307 | break; | |
308 | case 8: | |
309 | config = 3; | |
310 | break; | |
311 | default: | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
315 | mutex_lock(&data->update_lock); | |
316 | ||
317 | data->config &= ~(0x03 << TC654_FAN_PULSE_SHIFT[nr]); | |
318 | data->config |= (config << TC654_FAN_PULSE_SHIFT[nr]); | |
319 | ret = i2c_smbus_write_byte_data(client, TC654_REG_CONFIG, data->config); | |
320 | ||
321 | mutex_unlock(&data->update_lock); | |
322 | return ret < 0 ? ret : count; | |
323 | } | |
324 | ||
1acd2e29 GR |
325 | static ssize_t pwm_mode_show(struct device *dev, struct device_attribute *da, |
326 | char *buf) | |
aaf6fabf CP |
327 | { |
328 | struct tc654_data *data = tc654_update_client(dev); | |
329 | ||
330 | if (IS_ERR(data)) | |
331 | return PTR_ERR(data); | |
332 | ||
333 | return sprintf(buf, "%d\n", !!(data->config & TC654_REG_CONFIG_DUTYC)); | |
334 | } | |
335 | ||
1acd2e29 GR |
336 | static ssize_t pwm_mode_store(struct device *dev, struct device_attribute *da, |
337 | const char *buf, size_t count) | |
aaf6fabf CP |
338 | { |
339 | struct tc654_data *data = dev_get_drvdata(dev); | |
340 | struct i2c_client *client = data->client; | |
341 | unsigned long val; | |
342 | int ret; | |
343 | ||
344 | if (kstrtoul(buf, 10, &val)) | |
345 | return -EINVAL; | |
346 | ||
347 | if (val != 0 && val != 1) | |
348 | return -EINVAL; | |
349 | ||
350 | mutex_lock(&data->update_lock); | |
351 | ||
352 | if (val) | |
353 | data->config |= TC654_REG_CONFIG_DUTYC; | |
354 | else | |
355 | data->config &= ~TC654_REG_CONFIG_DUTYC; | |
356 | ||
357 | ret = i2c_smbus_write_byte_data(client, TC654_REG_CONFIG, data->config); | |
358 | ||
359 | mutex_unlock(&data->update_lock); | |
360 | return ret < 0 ? ret : count; | |
361 | } | |
362 | ||
363 | static const int tc654_pwm_map[16] = { 77, 88, 102, 112, 124, 136, 148, 160, | |
364 | 172, 184, 196, 207, 219, 231, 243, 255}; | |
365 | ||
1acd2e29 | 366 | static ssize_t pwm_show(struct device *dev, struct device_attribute *da, |
aaf6fabf CP |
367 | char *buf) |
368 | { | |
369 | struct tc654_data *data = tc654_update_client(dev); | |
370 | int pwm; | |
371 | ||
372 | if (IS_ERR(data)) | |
373 | return PTR_ERR(data); | |
374 | ||
375 | if (data->config & TC654_REG_CONFIG_SDM) | |
376 | pwm = 0; | |
377 | else | |
378 | pwm = tc654_pwm_map[data->duty_cycle]; | |
379 | ||
380 | return sprintf(buf, "%d\n", pwm); | |
381 | } | |
382 | ||
99cb5e9f | 383 | static int _set_pwm(struct tc654_data *data, unsigned long val) |
aaf6fabf | 384 | { |
aaf6fabf | 385 | struct i2c_client *client = data->client; |
aaf6fabf CP |
386 | int ret; |
387 | ||
aaf6fabf CP |
388 | mutex_lock(&data->update_lock); |
389 | ||
99cb5e9f | 390 | if (val == 0) { |
aaf6fabf | 391 | data->config |= TC654_REG_CONFIG_SDM; |
99cb5e9f CL |
392 | data->duty_cycle = 0; |
393 | } else { | |
aaf6fabf | 394 | data->config &= ~TC654_REG_CONFIG_SDM; |
99cb5e9f CL |
395 | data->duty_cycle = val - 1; |
396 | } | |
aaf6fabf CP |
397 | |
398 | ret = i2c_smbus_write_byte_data(client, TC654_REG_CONFIG, data->config); | |
399 | if (ret < 0) | |
400 | goto out; | |
401 | ||
402 | ret = i2c_smbus_write_byte_data(client, TC654_REG_DUTY_CYCLE, | |
403 | data->duty_cycle); | |
404 | ||
405 | out: | |
406 | mutex_unlock(&data->update_lock); | |
99cb5e9f CL |
407 | return ret; |
408 | } | |
409 | ||
410 | static ssize_t pwm_store(struct device *dev, struct device_attribute *da, | |
411 | const char *buf, size_t count) | |
412 | { | |
413 | struct tc654_data *data = dev_get_drvdata(dev); | |
414 | unsigned long val; | |
415 | int ret; | |
416 | ||
417 | if (kstrtoul(buf, 10, &val)) | |
418 | return -EINVAL; | |
419 | if (val > 255) | |
420 | return -EINVAL; | |
421 | if (val > 0) | |
422 | val = find_closest(val, tc654_pwm_map, ARRAY_SIZE(tc654_pwm_map)) + 1; | |
423 | ||
424 | ret = _set_pwm(data, val); | |
aaf6fabf CP |
425 | return ret < 0 ? ret : count; |
426 | } | |
427 | ||
1acd2e29 GR |
428 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
429 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); | |
430 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); | |
431 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); | |
432 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, fan_alarm, 0); | |
433 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, fan_alarm, 1); | |
434 | static SENSOR_DEVICE_ATTR_RW(fan1_pulses, fan_pulses, 0); | |
435 | static SENSOR_DEVICE_ATTR_RW(fan2_pulses, fan_pulses, 1); | |
436 | static SENSOR_DEVICE_ATTR_RW(pwm1_mode, pwm_mode, 0); | |
437 | static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0); | |
aaf6fabf CP |
438 | |
439 | /* Driver data */ | |
440 | static struct attribute *tc654_attrs[] = { | |
441 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
442 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
443 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
444 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
445 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
446 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
447 | &sensor_dev_attr_fan1_pulses.dev_attr.attr, | |
448 | &sensor_dev_attr_fan2_pulses.dev_attr.attr, | |
449 | &sensor_dev_attr_pwm1_mode.dev_attr.attr, | |
450 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
451 | NULL | |
452 | }; | |
453 | ||
454 | ATTRIBUTE_GROUPS(tc654); | |
455 | ||
99cb5e9f CL |
456 | /* |
457 | * thermal cooling device functions | |
458 | * | |
459 | * Account for the "ShutDown Mode (SDM)" state by offsetting | |
460 | * the 16 PWM duty cycle states by 1. | |
461 | * | |
462 | * State 0 = 0% PWM | Shutdown - Fan(s) are off | |
463 | * State 1 = 30% PWM | duty_cycle = 0 | |
464 | * State 2 = ~35% PWM | duty_cycle = 1 | |
465 | * [...] | |
466 | * State 15 = ~95% PWM | duty_cycle = 14 | |
467 | * State 16 = 100% PWM | duty_cycle = 15 | |
468 | */ | |
469 | #define TC654_MAX_COOLING_STATE 16 | |
470 | ||
471 | static int tc654_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state) | |
472 | { | |
473 | *state = TC654_MAX_COOLING_STATE; | |
474 | return 0; | |
475 | } | |
476 | ||
477 | static int tc654_get_cur_state(struct thermal_cooling_device *cdev, unsigned long *state) | |
478 | { | |
479 | struct tc654_data *data = tc654_update_client(cdev->devdata); | |
480 | ||
481 | if (IS_ERR(data)) | |
482 | return PTR_ERR(data); | |
483 | ||
484 | if (data->config & TC654_REG_CONFIG_SDM) | |
485 | *state = 0; /* FAN is off */ | |
486 | else | |
487 | *state = data->duty_cycle + 1; /* offset PWM States by 1 */ | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
492 | static int tc654_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) | |
493 | { | |
494 | struct tc654_data *data = tc654_update_client(cdev->devdata); | |
495 | ||
496 | if (IS_ERR(data)) | |
497 | return PTR_ERR(data); | |
498 | ||
499 | return _set_pwm(data, clamp_val(state, 0, TC654_MAX_COOLING_STATE)); | |
500 | } | |
501 | ||
502 | static const struct thermal_cooling_device_ops tc654_fan_cool_ops = { | |
503 | .get_max_state = tc654_get_max_state, | |
504 | .get_cur_state = tc654_get_cur_state, | |
505 | .set_cur_state = tc654_set_cur_state, | |
506 | }; | |
507 | ||
aaf6fabf CP |
508 | /* |
509 | * device probe and removal | |
510 | */ | |
511 | ||
67487038 | 512 | static int tc654_probe(struct i2c_client *client) |
aaf6fabf CP |
513 | { |
514 | struct device *dev = &client->dev; | |
515 | struct tc654_data *data; | |
516 | struct device *hwmon_dev; | |
517 | int ret; | |
518 | ||
519 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
520 | return -ENODEV; | |
521 | ||
522 | data = devm_kzalloc(dev, sizeof(struct tc654_data), GFP_KERNEL); | |
523 | if (!data) | |
524 | return -ENOMEM; | |
525 | ||
526 | data->client = client; | |
527 | mutex_init(&data->update_lock); | |
528 | ||
529 | ret = i2c_smbus_read_byte_data(client, TC654_REG_CONFIG); | |
530 | if (ret < 0) | |
531 | return ret; | |
532 | ||
533 | data->config = ret; | |
534 | ||
535 | hwmon_dev = | |
536 | devm_hwmon_device_register_with_groups(dev, client->name, data, | |
537 | tc654_groups); | |
99cb5e9f CL |
538 | if (IS_ERR(hwmon_dev)) |
539 | return PTR_ERR(hwmon_dev); | |
540 | ||
541 | if (IS_ENABLED(CONFIG_THERMAL)) { | |
542 | struct thermal_cooling_device *cdev; | |
543 | ||
544 | cdev = devm_thermal_of_cooling_device_register(dev, dev->of_node, client->name, | |
545 | hwmon_dev, &tc654_fan_cool_ops); | |
546 | return PTR_ERR_OR_ZERO(cdev); | |
547 | } | |
548 | ||
549 | return 0; | |
aaf6fabf CP |
550 | } |
551 | ||
552 | static const struct i2c_device_id tc654_id[] = { | |
553 | {"tc654", 0}, | |
554 | {"tc655", 0}, | |
555 | {} | |
556 | }; | |
557 | ||
558 | MODULE_DEVICE_TABLE(i2c, tc654_id); | |
559 | ||
560 | static struct i2c_driver tc654_driver = { | |
561 | .driver = { | |
562 | .name = "tc654", | |
563 | }, | |
1975d167 | 564 | .probe = tc654_probe, |
aaf6fabf CP |
565 | .id_table = tc654_id, |
566 | }; | |
567 | ||
568 | module_i2c_driver(tc654_driver); | |
569 | ||
570 | MODULE_AUTHOR("Allied Telesis Labs"); | |
571 | MODULE_DESCRIPTION("Microchip TC654/TC655 driver"); | |
572 | MODULE_LICENSE("GPL"); |