Root/
1 | /* |
2 | * Driver for Lineage Compact Power Line series of power entry modules. |
3 | * |
4 | * Copyright (C) 2010, 2011 Ericsson AB. |
5 | * |
6 | * Documentation: |
7 | * http://www.lineagepower.com/oem/pdf/CPLI2C.pdf |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 2 of the License, or |
12 | * (at your option) any later version. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
22 | */ |
23 | |
24 | #include <linux/kernel.h> |
25 | #include <linux/module.h> |
26 | #include <linux/init.h> |
27 | #include <linux/err.h> |
28 | #include <linux/slab.h> |
29 | #include <linux/i2c.h> |
30 | #include <linux/hwmon.h> |
31 | #include <linux/hwmon-sysfs.h> |
32 | #include <linux/jiffies.h> |
33 | |
34 | /* |
35 | * This driver supports various Lineage Compact Power Line DC/DC and AC/DC |
36 | * converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others. |
37 | * |
38 | * The devices are nominally PMBus compliant. However, most standard PMBus |
39 | * commands are not supported. Specifically, all hardware monitoring and |
40 | * status reporting commands are non-standard. For this reason, a standard |
41 | * PMBus driver can not be used. |
42 | * |
43 | * All Lineage CPL devices have a built-in I2C bus master selector (PCA9541). |
44 | * To ensure device access, this driver should only be used as client driver |
45 | * to the pca9541 I2C master selector driver. |
46 | */ |
47 | |
48 | /* Command codes */ |
49 | #define PEM_OPERATION 0x01 |
50 | #define PEM_CLEAR_INFO_FLAGS 0x03 |
51 | #define PEM_VOUT_COMMAND 0x21 |
52 | #define PEM_VOUT_OV_FAULT_LIMIT 0x40 |
53 | #define PEM_READ_DATA_STRING 0xd0 |
54 | #define PEM_READ_INPUT_STRING 0xdc |
55 | #define PEM_READ_FIRMWARE_REV 0xdd |
56 | #define PEM_READ_RUN_TIMER 0xde |
57 | #define PEM_FAN_HI_SPEED 0xdf |
58 | #define PEM_FAN_NORMAL_SPEED 0xe0 |
59 | #define PEM_READ_FAN_SPEED 0xe1 |
60 | |
61 | /* offsets in data string */ |
62 | #define PEM_DATA_STATUS_2 0 |
63 | #define PEM_DATA_STATUS_1 1 |
64 | #define PEM_DATA_ALARM_2 2 |
65 | #define PEM_DATA_ALARM_1 3 |
66 | #define PEM_DATA_VOUT_LSB 4 |
67 | #define PEM_DATA_VOUT_MSB 5 |
68 | #define PEM_DATA_CURRENT 6 |
69 | #define PEM_DATA_TEMP 7 |
70 | |
71 | /* Virtual entries, to report constants */ |
72 | #define PEM_DATA_TEMP_MAX 10 |
73 | #define PEM_DATA_TEMP_CRIT 11 |
74 | |
75 | /* offsets in input string */ |
76 | #define PEM_INPUT_VOLTAGE 0 |
77 | #define PEM_INPUT_POWER_LSB 1 |
78 | #define PEM_INPUT_POWER_MSB 2 |
79 | |
80 | /* offsets in fan data */ |
81 | #define PEM_FAN_ADJUSTMENT 0 |
82 | #define PEM_FAN_FAN1 1 |
83 | #define PEM_FAN_FAN2 2 |
84 | #define PEM_FAN_FAN3 3 |
85 | |
86 | /* Status register bits */ |
87 | #define STS1_OUTPUT_ON (1 << 0) |
88 | #define STS1_LEDS_FLASHING (1 << 1) |
89 | #define STS1_EXT_FAULT (1 << 2) |
90 | #define STS1_SERVICE_LED_ON (1 << 3) |
91 | #define STS1_SHUTDOWN_OCCURRED (1 << 4) |
92 | #define STS1_INT_FAULT (1 << 5) |
93 | #define STS1_ISOLATION_TEST_OK (1 << 6) |
94 | |
95 | #define STS2_ENABLE_PIN_HI (1 << 0) |
96 | #define STS2_DATA_OUT_RANGE (1 << 1) |
97 | #define STS2_RESTARTED_OK (1 << 1) |
98 | #define STS2_ISOLATION_TEST_FAIL (1 << 3) |
99 | #define STS2_HIGH_POWER_CAP (1 << 4) |
100 | #define STS2_INVALID_INSTR (1 << 5) |
101 | #define STS2_WILL_RESTART (1 << 6) |
102 | #define STS2_PEC_ERR (1 << 7) |
103 | |
104 | /* Alarm register bits */ |
105 | #define ALRM1_VIN_OUT_LIMIT (1 << 0) |
106 | #define ALRM1_VOUT_OUT_LIMIT (1 << 1) |
107 | #define ALRM1_OV_VOLT_SHUTDOWN (1 << 2) |
108 | #define ALRM1_VIN_OVERCURRENT (1 << 3) |
109 | #define ALRM1_TEMP_WARNING (1 << 4) |
110 | #define ALRM1_TEMP_SHUTDOWN (1 << 5) |
111 | #define ALRM1_PRIMARY_FAULT (1 << 6) |
112 | #define ALRM1_POWER_LIMIT (1 << 7) |
113 | |
114 | #define ALRM2_5V_OUT_LIMIT (1 << 1) |
115 | #define ALRM2_TEMP_FAULT (1 << 2) |
116 | #define ALRM2_OV_LOW (1 << 3) |
117 | #define ALRM2_DCDC_TEMP_HIGH (1 << 4) |
118 | #define ALRM2_PRI_TEMP_HIGH (1 << 5) |
119 | #define ALRM2_NO_PRIMARY (1 << 6) |
120 | #define ALRM2_FAN_FAULT (1 << 7) |
121 | |
122 | #define FIRMWARE_REV_LEN 4 |
123 | #define DATA_STRING_LEN 9 |
124 | #define INPUT_STRING_LEN 5 /* 4 for most devices */ |
125 | #define FAN_SPEED_LEN 5 |
126 | |
127 | struct pem_data { |
128 | struct device *hwmon_dev; |
129 | |
130 | struct mutex update_lock; |
131 | bool valid; |
132 | bool fans_supported; |
133 | int input_length; |
134 | unsigned long last_updated; /* in jiffies */ |
135 | |
136 | u8 firmware_rev[FIRMWARE_REV_LEN]; |
137 | u8 data_string[DATA_STRING_LEN]; |
138 | u8 input_string[INPUT_STRING_LEN]; |
139 | u8 fan_speed[FAN_SPEED_LEN]; |
140 | }; |
141 | |
142 | static int pem_read_block(struct i2c_client *client, u8 command, u8 *data, |
143 | int data_len) |
144 | { |
145 | u8 block_buffer[I2C_SMBUS_BLOCK_MAX]; |
146 | int result; |
147 | |
148 | result = i2c_smbus_read_block_data(client, command, block_buffer); |
149 | if (unlikely(result < 0)) |
150 | goto abort; |
151 | if (unlikely(result == 0xff || result != data_len)) { |
152 | result = -EIO; |
153 | goto abort; |
154 | } |
155 | memcpy(data, block_buffer, data_len); |
156 | result = 0; |
157 | abort: |
158 | return result; |
159 | } |
160 | |
161 | static struct pem_data *pem_update_device(struct device *dev) |
162 | { |
163 | struct i2c_client *client = to_i2c_client(dev); |
164 | struct pem_data *data = i2c_get_clientdata(client); |
165 | struct pem_data *ret = data; |
166 | |
167 | mutex_lock(&data->update_lock); |
168 | |
169 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { |
170 | int result; |
171 | |
172 | /* Read data string */ |
173 | result = pem_read_block(client, PEM_READ_DATA_STRING, |
174 | data->data_string, |
175 | sizeof(data->data_string)); |
176 | if (unlikely(result < 0)) { |
177 | ret = ERR_PTR(result); |
178 | goto abort; |
179 | } |
180 | |
181 | /* Read input string */ |
182 | if (data->input_length) { |
183 | result = pem_read_block(client, PEM_READ_INPUT_STRING, |
184 | data->input_string, |
185 | data->input_length); |
186 | if (unlikely(result < 0)) { |
187 | ret = ERR_PTR(result); |
188 | goto abort; |
189 | } |
190 | } |
191 | |
192 | /* Read fan speeds */ |
193 | if (data->fans_supported) { |
194 | result = pem_read_block(client, PEM_READ_FAN_SPEED, |
195 | data->fan_speed, |
196 | sizeof(data->fan_speed)); |
197 | if (unlikely(result < 0)) { |
198 | ret = ERR_PTR(result); |
199 | goto abort; |
200 | } |
201 | } |
202 | |
203 | i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS); |
204 | |
205 | data->last_updated = jiffies; |
206 | data->valid = 1; |
207 | } |
208 | abort: |
209 | mutex_unlock(&data->update_lock); |
210 | return ret; |
211 | } |
212 | |
213 | static long pem_get_data(u8 *data, int len, int index) |
214 | { |
215 | long val; |
216 | |
217 | switch (index) { |
218 | case PEM_DATA_VOUT_LSB: |
219 | val = (data[index] + (data[index+1] << 8)) * 5 / 2; |
220 | break; |
221 | case PEM_DATA_CURRENT: |
222 | val = data[index] * 200; |
223 | break; |
224 | case PEM_DATA_TEMP: |
225 | val = data[index] * 1000; |
226 | break; |
227 | case PEM_DATA_TEMP_MAX: |
228 | val = 97 * 1000; /* 97 degrees C per datasheet */ |
229 | break; |
230 | case PEM_DATA_TEMP_CRIT: |
231 | val = 107 * 1000; /* 107 degrees C per datasheet */ |
232 | break; |
233 | default: |
234 | WARN_ON_ONCE(1); |
235 | val = 0; |
236 | } |
237 | return val; |
238 | } |
239 | |
240 | static long pem_get_input(u8 *data, int len, int index) |
241 | { |
242 | long val; |
243 | |
244 | switch (index) { |
245 | case PEM_INPUT_VOLTAGE: |
246 | if (len == INPUT_STRING_LEN) |
247 | val = (data[index] + (data[index+1] << 8) - 75) * 1000; |
248 | else |
249 | val = (data[index] - 75) * 1000; |
250 | break; |
251 | case PEM_INPUT_POWER_LSB: |
252 | if (len == INPUT_STRING_LEN) |
253 | index++; |
254 | val = (data[index] + (data[index+1] << 8)) * 1000000L; |
255 | break; |
256 | default: |
257 | WARN_ON_ONCE(1); |
258 | val = 0; |
259 | } |
260 | return val; |
261 | } |
262 | |
263 | static long pem_get_fan(u8 *data, int len, int index) |
264 | { |
265 | long val; |
266 | |
267 | switch (index) { |
268 | case PEM_FAN_FAN1: |
269 | case PEM_FAN_FAN2: |
270 | case PEM_FAN_FAN3: |
271 | val = data[index] * 100; |
272 | break; |
273 | default: |
274 | WARN_ON_ONCE(1); |
275 | val = 0; |
276 | } |
277 | return val; |
278 | } |
279 | |
280 | /* |
281 | * Show boolean, either a fault or an alarm. |
282 | * .nr points to the register, .index is the bit mask to check |
283 | */ |
284 | static ssize_t pem_show_bool(struct device *dev, |
285 | struct device_attribute *da, char *buf) |
286 | { |
287 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(da); |
288 | struct pem_data *data = pem_update_device(dev); |
289 | u8 status; |
290 | |
291 | if (IS_ERR(data)) |
292 | return PTR_ERR(data); |
293 | |
294 | status = data->data_string[attr->nr] & attr->index; |
295 | return snprintf(buf, PAGE_SIZE, "%d\n", !!status); |
296 | } |
297 | |
298 | static ssize_t pem_show_data(struct device *dev, struct device_attribute *da, |
299 | char *buf) |
300 | { |
301 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
302 | struct pem_data *data = pem_update_device(dev); |
303 | long value; |
304 | |
305 | if (IS_ERR(data)) |
306 | return PTR_ERR(data); |
307 | |
308 | value = pem_get_data(data->data_string, sizeof(data->data_string), |
309 | attr->index); |
310 | |
311 | return snprintf(buf, PAGE_SIZE, "%ld\n", value); |
312 | } |
313 | |
314 | static ssize_t pem_show_input(struct device *dev, struct device_attribute *da, |
315 | char *buf) |
316 | { |
317 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
318 | struct pem_data *data = pem_update_device(dev); |
319 | long value; |
320 | |
321 | if (IS_ERR(data)) |
322 | return PTR_ERR(data); |
323 | |
324 | value = pem_get_input(data->input_string, sizeof(data->input_string), |
325 | attr->index); |
326 | |
327 | return snprintf(buf, PAGE_SIZE, "%ld\n", value); |
328 | } |
329 | |
330 | static ssize_t pem_show_fan(struct device *dev, struct device_attribute *da, |
331 | char *buf) |
332 | { |
333 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
334 | struct pem_data *data = pem_update_device(dev); |
335 | long value; |
336 | |
337 | if (IS_ERR(data)) |
338 | return PTR_ERR(data); |
339 | |
340 | value = pem_get_fan(data->fan_speed, sizeof(data->fan_speed), |
341 | attr->index); |
342 | |
343 | return snprintf(buf, PAGE_SIZE, "%ld\n", value); |
344 | } |
345 | |
346 | /* Voltages */ |
347 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, pem_show_data, NULL, |
348 | PEM_DATA_VOUT_LSB); |
349 | static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, pem_show_bool, NULL, |
350 | PEM_DATA_ALARM_1, ALRM1_VOUT_OUT_LIMIT); |
351 | static SENSOR_DEVICE_ATTR_2(in1_crit_alarm, S_IRUGO, pem_show_bool, NULL, |
352 | PEM_DATA_ALARM_1, ALRM1_OV_VOLT_SHUTDOWN); |
353 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, pem_show_input, NULL, |
354 | PEM_INPUT_VOLTAGE); |
355 | static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, pem_show_bool, NULL, |
356 | PEM_DATA_ALARM_1, |
357 | ALRM1_VIN_OUT_LIMIT | ALRM1_PRIMARY_FAULT); |
358 | |
359 | /* Currents */ |
360 | static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, pem_show_data, NULL, |
361 | PEM_DATA_CURRENT); |
362 | static SENSOR_DEVICE_ATTR_2(curr1_alarm, S_IRUGO, pem_show_bool, NULL, |
363 | PEM_DATA_ALARM_1, ALRM1_VIN_OVERCURRENT); |
364 | |
365 | /* Power */ |
366 | static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, pem_show_input, NULL, |
367 | PEM_INPUT_POWER_LSB); |
368 | static SENSOR_DEVICE_ATTR_2(power1_alarm, S_IRUGO, pem_show_bool, NULL, |
369 | PEM_DATA_ALARM_1, ALRM1_POWER_LIMIT); |
370 | |
371 | /* Fans */ |
372 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, pem_show_fan, NULL, |
373 | PEM_FAN_FAN1); |
374 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, pem_show_fan, NULL, |
375 | PEM_FAN_FAN2); |
376 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, pem_show_fan, NULL, |
377 | PEM_FAN_FAN3); |
378 | static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, pem_show_bool, NULL, |
379 | PEM_DATA_ALARM_2, ALRM2_FAN_FAULT); |
380 | |
381 | /* Temperatures */ |
382 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, pem_show_data, NULL, |
383 | PEM_DATA_TEMP); |
384 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, pem_show_data, NULL, |
385 | PEM_DATA_TEMP_MAX); |
386 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, pem_show_data, NULL, |
387 | PEM_DATA_TEMP_CRIT); |
388 | static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, pem_show_bool, NULL, |
389 | PEM_DATA_ALARM_1, ALRM1_TEMP_WARNING); |
390 | static SENSOR_DEVICE_ATTR_2(temp1_crit_alarm, S_IRUGO, pem_show_bool, NULL, |
391 | PEM_DATA_ALARM_1, ALRM1_TEMP_SHUTDOWN); |
392 | static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, pem_show_bool, NULL, |
393 | PEM_DATA_ALARM_2, ALRM2_TEMP_FAULT); |
394 | |
395 | static struct attribute *pem_attributes[] = { |
396 | &sensor_dev_attr_in1_input.dev_attr.attr, |
397 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
398 | &sensor_dev_attr_in1_crit_alarm.dev_attr.attr, |
399 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
400 | |
401 | &sensor_dev_attr_curr1_alarm.dev_attr.attr, |
402 | |
403 | &sensor_dev_attr_power1_alarm.dev_attr.attr, |
404 | |
405 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
406 | |
407 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
408 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
409 | &sensor_dev_attr_temp1_crit.dev_attr.attr, |
410 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
411 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, |
412 | &sensor_dev_attr_temp1_fault.dev_attr.attr, |
413 | |
414 | NULL, |
415 | }; |
416 | |
417 | static const struct attribute_group pem_group = { |
418 | .attrs = pem_attributes, |
419 | }; |
420 | |
421 | static struct attribute *pem_input_attributes[] = { |
422 | &sensor_dev_attr_in2_input.dev_attr.attr, |
423 | &sensor_dev_attr_curr1_input.dev_attr.attr, |
424 | &sensor_dev_attr_power1_input.dev_attr.attr, |
425 | NULL |
426 | }; |
427 | |
428 | static const struct attribute_group pem_input_group = { |
429 | .attrs = pem_input_attributes, |
430 | }; |
431 | |
432 | static struct attribute *pem_fan_attributes[] = { |
433 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
434 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
435 | &sensor_dev_attr_fan3_input.dev_attr.attr, |
436 | NULL |
437 | }; |
438 | |
439 | static const struct attribute_group pem_fan_group = { |
440 | .attrs = pem_fan_attributes, |
441 | }; |
442 | |
443 | static int pem_probe(struct i2c_client *client, |
444 | const struct i2c_device_id *id) |
445 | { |
446 | struct i2c_adapter *adapter = client->adapter; |
447 | struct pem_data *data; |
448 | int ret; |
449 | |
450 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BLOCK_DATA |
451 | | I2C_FUNC_SMBUS_WRITE_BYTE)) |
452 | return -ENODEV; |
453 | |
454 | data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); |
455 | if (!data) |
456 | return -ENOMEM; |
457 | |
458 | i2c_set_clientdata(client, data); |
459 | mutex_init(&data->update_lock); |
460 | |
461 | /* |
462 | * We use the next two commands to determine if the device is really |
463 | * there. |
464 | */ |
465 | ret = pem_read_block(client, PEM_READ_FIRMWARE_REV, |
466 | data->firmware_rev, sizeof(data->firmware_rev)); |
467 | if (ret < 0) |
468 | return ret; |
469 | |
470 | ret = i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS); |
471 | if (ret < 0) |
472 | return ret; |
473 | |
474 | dev_info(&client->dev, "Firmware revision %d.%d.%d\n", |
475 | data->firmware_rev[0], data->firmware_rev[1], |
476 | data->firmware_rev[2]); |
477 | |
478 | /* Register sysfs hooks */ |
479 | ret = sysfs_create_group(&client->dev.kobj, &pem_group); |
480 | if (ret) |
481 | return ret; |
482 | |
483 | /* |
484 | * Check if input readings are supported. |
485 | * This is the case if we can read input data, |
486 | * and if the returned data is not all zeros. |
487 | * Note that input alarms are always supported. |
488 | */ |
489 | ret = pem_read_block(client, PEM_READ_INPUT_STRING, |
490 | data->input_string, |
491 | sizeof(data->input_string) - 1); |
492 | if (!ret && (data->input_string[0] || data->input_string[1] || |
493 | data->input_string[2])) |
494 | data->input_length = sizeof(data->input_string) - 1; |
495 | else if (ret < 0) { |
496 | /* Input string is one byte longer for some devices */ |
497 | ret = pem_read_block(client, PEM_READ_INPUT_STRING, |
498 | data->input_string, |
499 | sizeof(data->input_string)); |
500 | if (!ret && (data->input_string[0] || data->input_string[1] || |
501 | data->input_string[2] || data->input_string[3])) |
502 | data->input_length = sizeof(data->input_string); |
503 | } |
504 | ret = 0; |
505 | if (data->input_length) { |
506 | ret = sysfs_create_group(&client->dev.kobj, &pem_input_group); |
507 | if (ret) |
508 | goto out_remove_groups; |
509 | } |
510 | |
511 | /* |
512 | * Check if fan speed readings are supported. |
513 | * This is the case if we can read fan speed data, |
514 | * and if the returned data is not all zeros. |
515 | * Note that the fan alarm is always supported. |
516 | */ |
517 | ret = pem_read_block(client, PEM_READ_FAN_SPEED, |
518 | data->fan_speed, |
519 | sizeof(data->fan_speed)); |
520 | if (!ret && (data->fan_speed[0] || data->fan_speed[1] || |
521 | data->fan_speed[2] || data->fan_speed[3])) { |
522 | data->fans_supported = true; |
523 | ret = sysfs_create_group(&client->dev.kobj, &pem_fan_group); |
524 | if (ret) |
525 | goto out_remove_groups; |
526 | } |
527 | |
528 | data->hwmon_dev = hwmon_device_register(&client->dev); |
529 | if (IS_ERR(data->hwmon_dev)) { |
530 | ret = PTR_ERR(data->hwmon_dev); |
531 | goto out_remove_groups; |
532 | } |
533 | |
534 | return 0; |
535 | |
536 | out_remove_groups: |
537 | sysfs_remove_group(&client->dev.kobj, &pem_input_group); |
538 | sysfs_remove_group(&client->dev.kobj, &pem_fan_group); |
539 | sysfs_remove_group(&client->dev.kobj, &pem_group); |
540 | return ret; |
541 | } |
542 | |
543 | static int pem_remove(struct i2c_client *client) |
544 | { |
545 | struct pem_data *data = i2c_get_clientdata(client); |
546 | |
547 | hwmon_device_unregister(data->hwmon_dev); |
548 | |
549 | sysfs_remove_group(&client->dev.kobj, &pem_input_group); |
550 | sysfs_remove_group(&client->dev.kobj, &pem_fan_group); |
551 | sysfs_remove_group(&client->dev.kobj, &pem_group); |
552 | |
553 | return 0; |
554 | } |
555 | |
556 | static const struct i2c_device_id pem_id[] = { |
557 | {"lineage_pem", 0}, |
558 | {} |
559 | }; |
560 | MODULE_DEVICE_TABLE(i2c, pem_id); |
561 | |
562 | static struct i2c_driver pem_driver = { |
563 | .driver = { |
564 | .name = "lineage_pem", |
565 | }, |
566 | .probe = pem_probe, |
567 | .remove = pem_remove, |
568 | .id_table = pem_id, |
569 | }; |
570 | |
571 | module_i2c_driver(pem_driver); |
572 | |
573 | MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>"); |
574 | MODULE_DESCRIPTION("Lineage CPL PEM hardware monitoring driver"); |
575 | MODULE_LICENSE("GPL"); |
576 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9