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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright 2017 IBM Corp.
4 */
5
6#include <linux/bitfield.h>
7#include <linux/bitops.h>
8#include <linux/debugfs.h>
9#include <linux/device.h>
10#include <linux/fs.h>
11#include <linux/i2c.h>
12#include <linux/jiffies.h>
13#include <linux/leds.h>
14#include <linux/module.h>
15#include <linux/mutex.h>
16#include <linux/of_device.h>
17#include <linux/pmbus.h>
18
19#include "pmbus.h"
20
21#define CFFPS_MFG_ID_CMD 0x99
22#define CFFPS_FRU_CMD 0x9A
23#define CFFPS_PN_CMD 0x9B
24#define CFFPS_HEADER_CMD 0x9C
25#define CFFPS_SN_CMD 0x9E
26#define CFFPS_MAX_POWER_OUT_CMD 0xA7
27#define CFFPS_CCIN_CMD 0xBD
28#define CFFPS_FW_CMD 0xFA
29#define CFFPS1_FW_NUM_BYTES 4
30#define CFFPS2_FW_NUM_WORDS 3
31#define CFFPS_SYS_CONFIG_CMD 0xDA
32#define CFFPS_12VCS_VOUT_CMD 0xDE
33
34#define CFFPS_INPUT_HISTORY_CMD 0xD6
35#define CFFPS_INPUT_HISTORY_SIZE 100
36
37#define CFFPS_CCIN_REVISION GENMASK(7, 0)
38#define CFFPS_CCIN_REVISION_LEGACY 0xde
39#define CFFPS_CCIN_VERSION GENMASK(15, 8)
40#define CFFPS_CCIN_VERSION_1 0x2b
41#define CFFPS_CCIN_VERSION_2 0x2e
42#define CFFPS_CCIN_VERSION_3 0x51
43
44/* STATUS_MFR_SPECIFIC bits */
45#define CFFPS_MFR_FAN_FAULT BIT(0)
46#define CFFPS_MFR_THERMAL_FAULT BIT(1)
47#define CFFPS_MFR_OV_FAULT BIT(2)
48#define CFFPS_MFR_UV_FAULT BIT(3)
49#define CFFPS_MFR_PS_KILL BIT(4)
50#define CFFPS_MFR_OC_FAULT BIT(5)
51#define CFFPS_MFR_VAUX_FAULT BIT(6)
52#define CFFPS_MFR_CURRENT_SHARE_WARNING BIT(7)
53
54#define CFFPS_LED_BLINK (BIT(0) | BIT(6))
55#define CFFPS_LED_ON (BIT(1) | BIT(6))
56#define CFFPS_LED_OFF (BIT(2) | BIT(6))
57#define CFFPS_BLINK_RATE_MS 250
58
59enum {
60 CFFPS_DEBUGFS_INPUT_HISTORY = 0,
61 CFFPS_DEBUGFS_MFG_ID,
62 CFFPS_DEBUGFS_FRU,
63 CFFPS_DEBUGFS_PN,
64 CFFPS_DEBUGFS_HEADER,
65 CFFPS_DEBUGFS_SN,
66 CFFPS_DEBUGFS_MAX_POWER_OUT,
67 CFFPS_DEBUGFS_CCIN,
68 CFFPS_DEBUGFS_FW,
69 CFFPS_DEBUGFS_ON_OFF_CONFIG,
70 CFFPS_DEBUGFS_NUM_ENTRIES
71};
72
73enum versions { cffps1, cffps2, cffps_unknown };
74
75struct ibm_cffps_input_history {
76 struct mutex update_lock;
77 unsigned long last_update;
78
79 u8 byte_count;
80 u8 data[CFFPS_INPUT_HISTORY_SIZE];
81};
82
83struct ibm_cffps {
84 enum versions version;
85 struct i2c_client *client;
86
87 struct ibm_cffps_input_history input_history;
88
89 int debugfs_entries[CFFPS_DEBUGFS_NUM_ENTRIES];
90
91 char led_name[32];
92 u8 led_state;
93 struct led_classdev led;
94};
95
96static const struct i2c_device_id ibm_cffps_id[];
97
98#define to_psu(x, y) container_of((x), struct ibm_cffps, debugfs_entries[(y)])
99
100static ssize_t ibm_cffps_read_input_history(struct ibm_cffps *psu,
101 char __user *buf, size_t count,
102 loff_t *ppos)
103{
104 int rc;
105 u8 msgbuf0[1] = { CFFPS_INPUT_HISTORY_CMD };
106 u8 msgbuf1[CFFPS_INPUT_HISTORY_SIZE + 1] = { 0 };
107 struct i2c_msg msg[2] = {
108 {
109 .addr = psu->client->addr,
110 .flags = psu->client->flags,
111 .len = 1,
112 .buf = msgbuf0,
113 }, {
114 .addr = psu->client->addr,
115 .flags = psu->client->flags | I2C_M_RD,
116 .len = CFFPS_INPUT_HISTORY_SIZE + 1,
117 .buf = msgbuf1,
118 },
119 };
120
121 if (!*ppos) {
122 mutex_lock(&psu->input_history.update_lock);
123 if (time_after(jiffies, psu->input_history.last_update + HZ)) {
124 /*
125 * Use a raw i2c transfer, since we need more bytes
126 * than Linux I2C supports through smbus xfr (only 32).
127 */
128 rc = i2c_transfer(psu->client->adapter, msg, 2);
129 if (rc < 0) {
130 mutex_unlock(&psu->input_history.update_lock);
131 return rc;
132 }
133
134 psu->input_history.byte_count = msgbuf1[0];
135 memcpy(psu->input_history.data, &msgbuf1[1],
136 CFFPS_INPUT_HISTORY_SIZE);
137 psu->input_history.last_update = jiffies;
138 }
139
140 mutex_unlock(&psu->input_history.update_lock);
141 }
142
143 return simple_read_from_buffer(buf, count, ppos,
144 psu->input_history.data,
145 psu->input_history.byte_count);
146}
147
148static ssize_t ibm_cffps_debugfs_read(struct file *file, char __user *buf,
149 size_t count, loff_t *ppos)
150{
151 u8 cmd;
152 int i, rc;
153 int *idxp = file->private_data;
154 int idx = *idxp;
155 struct ibm_cffps *psu = to_psu(idxp, idx);
156 char data[I2C_SMBUS_BLOCK_MAX + 2] = { 0 };
157
158 pmbus_set_page(psu->client, 0, 0xff);
159
160 switch (idx) {
161 case CFFPS_DEBUGFS_INPUT_HISTORY:
162 return ibm_cffps_read_input_history(psu, buf, count, ppos);
163 case CFFPS_DEBUGFS_MFG_ID:
164 cmd = CFFPS_MFG_ID_CMD;
165 break;
166 case CFFPS_DEBUGFS_FRU:
167 cmd = CFFPS_FRU_CMD;
168 break;
169 case CFFPS_DEBUGFS_PN:
170 cmd = CFFPS_PN_CMD;
171 break;
172 case CFFPS_DEBUGFS_HEADER:
173 cmd = CFFPS_HEADER_CMD;
174 break;
175 case CFFPS_DEBUGFS_SN:
176 cmd = CFFPS_SN_CMD;
177 break;
178 case CFFPS_DEBUGFS_MAX_POWER_OUT:
179 if (psu->version == cffps1) {
180 rc = i2c_smbus_read_word_swapped(psu->client,
181 CFFPS_MAX_POWER_OUT_CMD);
182 } else {
183 rc = i2c_smbus_read_word_data(psu->client,
184 CFFPS_MAX_POWER_OUT_CMD);
185 }
186
187 if (rc < 0)
188 return rc;
189
190 rc = snprintf(data, I2C_SMBUS_BLOCK_MAX, "%d", rc);
191 goto done;
192 case CFFPS_DEBUGFS_CCIN:
193 rc = i2c_smbus_read_word_swapped(psu->client, CFFPS_CCIN_CMD);
194 if (rc < 0)
195 return rc;
196
197 rc = snprintf(data, 5, "%04X", rc);
198 goto done;
199 case CFFPS_DEBUGFS_FW:
200 switch (psu->version) {
201 case cffps1:
202 for (i = 0; i < CFFPS1_FW_NUM_BYTES; ++i) {
203 rc = i2c_smbus_read_byte_data(psu->client,
204 CFFPS_FW_CMD +
205 i);
206 if (rc < 0)
207 return rc;
208
209 snprintf(&data[i * 2], 3, "%02X", rc);
210 }
211
212 rc = i * 2;
213 break;
214 case cffps2:
215 for (i = 0; i < CFFPS2_FW_NUM_WORDS; ++i) {
216 rc = i2c_smbus_read_word_data(psu->client,
217 CFFPS_FW_CMD +
218 i);
219 if (rc < 0)
220 return rc;
221
222 snprintf(&data[i * 4], 5, "%04X", rc);
223 }
224
225 rc = i * 4;
226 break;
227 default:
228 return -EOPNOTSUPP;
229 }
230 goto done;
231 case CFFPS_DEBUGFS_ON_OFF_CONFIG:
232 rc = i2c_smbus_read_byte_data(psu->client,
233 PMBUS_ON_OFF_CONFIG);
234 if (rc < 0)
235 return rc;
236
237 rc = snprintf(data, 3, "%02x", rc);
238 goto done;
239 default:
240 return -EINVAL;
241 }
242
243 rc = i2c_smbus_read_block_data(psu->client, cmd, data);
244 if (rc < 0)
245 return rc;
246
247done:
248 data[rc] = '\n';
249 rc += 2;
250
251 return simple_read_from_buffer(buf, count, ppos, data, rc);
252}
253
254static ssize_t ibm_cffps_debugfs_write(struct file *file,
255 const char __user *buf, size_t count,
256 loff_t *ppos)
257{
258 u8 data;
259 ssize_t rc;
260 int *idxp = file->private_data;
261 int idx = *idxp;
262 struct ibm_cffps *psu = to_psu(idxp, idx);
263
264 switch (idx) {
265 case CFFPS_DEBUGFS_ON_OFF_CONFIG:
266 pmbus_set_page(psu->client, 0, 0xff);
267
268 rc = simple_write_to_buffer(&data, 1, ppos, buf, count);
269 if (rc <= 0)
270 return rc;
271
272 rc = i2c_smbus_write_byte_data(psu->client,
273 PMBUS_ON_OFF_CONFIG, data);
274 if (rc)
275 return rc;
276
277 rc = 1;
278 break;
279 default:
280 return -EINVAL;
281 }
282
283 return rc;
284}
285
286static const struct file_operations ibm_cffps_fops = {
287 .llseek = noop_llseek,
288 .read = ibm_cffps_debugfs_read,
289 .write = ibm_cffps_debugfs_write,
290 .open = simple_open,
291};
292
293static int ibm_cffps_read_byte_data(struct i2c_client *client, int page,
294 int reg)
295{
296 int rc, mfr;
297
298 switch (reg) {
299 case PMBUS_STATUS_VOUT:
300 case PMBUS_STATUS_IOUT:
301 case PMBUS_STATUS_TEMPERATURE:
302 case PMBUS_STATUS_FAN_12:
303 rc = pmbus_read_byte_data(client, page, reg);
304 if (rc < 0)
305 return rc;
306
307 mfr = pmbus_read_byte_data(client, page,
308 PMBUS_STATUS_MFR_SPECIFIC);
309 if (mfr < 0)
310 /*
311 * Return the status register instead of an error,
312 * since we successfully read status.
313 */
314 return rc;
315
316 /* Add MFR_SPECIFIC bits to the standard pmbus status regs. */
317 if (reg == PMBUS_STATUS_FAN_12) {
318 if (mfr & CFFPS_MFR_FAN_FAULT)
319 rc |= PB_FAN_FAN1_FAULT;
320 } else if (reg == PMBUS_STATUS_TEMPERATURE) {
321 if (mfr & CFFPS_MFR_THERMAL_FAULT)
322 rc |= PB_TEMP_OT_FAULT;
323 } else if (reg == PMBUS_STATUS_VOUT) {
324 if (mfr & (CFFPS_MFR_OV_FAULT | CFFPS_MFR_VAUX_FAULT))
325 rc |= PB_VOLTAGE_OV_FAULT;
326 if (mfr & CFFPS_MFR_UV_FAULT)
327 rc |= PB_VOLTAGE_UV_FAULT;
328 } else if (reg == PMBUS_STATUS_IOUT) {
329 if (mfr & CFFPS_MFR_OC_FAULT)
330 rc |= PB_IOUT_OC_FAULT;
331 if (mfr & CFFPS_MFR_CURRENT_SHARE_WARNING)
332 rc |= PB_CURRENT_SHARE_FAULT;
333 }
334 break;
335 default:
336 rc = -ENODATA;
337 break;
338 }
339
340 return rc;
341}
342
343static int ibm_cffps_read_word_data(struct i2c_client *client, int page,
344 int phase, int reg)
345{
346 int rc, mfr;
347
348 switch (reg) {
349 case PMBUS_STATUS_WORD:
350 rc = pmbus_read_word_data(client, page, phase, reg);
351 if (rc < 0)
352 return rc;
353
354 mfr = pmbus_read_byte_data(client, page,
355 PMBUS_STATUS_MFR_SPECIFIC);
356 if (mfr < 0)
357 /*
358 * Return the status register instead of an error,
359 * since we successfully read status.
360 */
361 return rc;
362
363 if (mfr & CFFPS_MFR_PS_KILL)
364 rc |= PB_STATUS_OFF;
365 break;
366 case PMBUS_VIRT_READ_VMON:
367 rc = pmbus_read_word_data(client, page, phase,
368 CFFPS_12VCS_VOUT_CMD);
369 break;
370 default:
371 rc = -ENODATA;
372 break;
373 }
374
375 return rc;
376}
377
378static int ibm_cffps_led_brightness_set(struct led_classdev *led_cdev,
379 enum led_brightness brightness)
380{
381 int rc;
382 u8 next_led_state;
383 struct ibm_cffps *psu = container_of(led_cdev, struct ibm_cffps, led);
384
385 if (brightness == LED_OFF) {
386 next_led_state = CFFPS_LED_OFF;
387 } else {
388 brightness = LED_FULL;
389
390 if (psu->led_state != CFFPS_LED_BLINK)
391 next_led_state = CFFPS_LED_ON;
392 else
393 next_led_state = CFFPS_LED_BLINK;
394 }
395
396 dev_dbg(&psu->client->dev, "LED brightness set: %d. Command: %d.\n",
397 brightness, next_led_state);
398
399 pmbus_set_page(psu->client, 0, 0xff);
400
401 rc = i2c_smbus_write_byte_data(psu->client, CFFPS_SYS_CONFIG_CMD,
402 next_led_state);
403 if (rc < 0)
404 return rc;
405
406 psu->led_state = next_led_state;
407 led_cdev->brightness = brightness;
408
409 return 0;
410}
411
412static int ibm_cffps_led_blink_set(struct led_classdev *led_cdev,
413 unsigned long *delay_on,
414 unsigned long *delay_off)
415{
416 int rc;
417 struct ibm_cffps *psu = container_of(led_cdev, struct ibm_cffps, led);
418
419 dev_dbg(&psu->client->dev, "LED blink set.\n");
420
421 pmbus_set_page(psu->client, 0, 0xff);
422
423 rc = i2c_smbus_write_byte_data(psu->client, CFFPS_SYS_CONFIG_CMD,
424 CFFPS_LED_BLINK);
425 if (rc < 0)
426 return rc;
427
428 psu->led_state = CFFPS_LED_BLINK;
429 led_cdev->brightness = LED_FULL;
430 *delay_on = CFFPS_BLINK_RATE_MS;
431 *delay_off = CFFPS_BLINK_RATE_MS;
432
433 return 0;
434}
435
436static void ibm_cffps_create_led_class(struct ibm_cffps *psu)
437{
438 int rc;
439 struct i2c_client *client = psu->client;
440 struct device *dev = &client->dev;
441
442 snprintf(psu->led_name, sizeof(psu->led_name), "%s-%02x", client->name,
443 client->addr);
444 psu->led.name = psu->led_name;
445 psu->led.max_brightness = LED_FULL;
446 psu->led.brightness_set_blocking = ibm_cffps_led_brightness_set;
447 psu->led.blink_set = ibm_cffps_led_blink_set;
448
449 rc = devm_led_classdev_register(dev, &psu->led);
450 if (rc)
451 dev_warn(dev, "failed to register led class: %d\n", rc);
452 else
453 i2c_smbus_write_byte_data(client, CFFPS_SYS_CONFIG_CMD,
454 CFFPS_LED_OFF);
455}
456
457static struct pmbus_driver_info ibm_cffps_info[] = {
458 [cffps1] = {
459 .pages = 1,
460 .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
461 PMBUS_HAVE_PIN | PMBUS_HAVE_FAN12 | PMBUS_HAVE_TEMP |
462 PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |
463 PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT |
464 PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP |
465 PMBUS_HAVE_STATUS_FAN12,
466 .read_byte_data = ibm_cffps_read_byte_data,
467 .read_word_data = ibm_cffps_read_word_data,
468 },
469 [cffps2] = {
470 .pages = 2,
471 .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
472 PMBUS_HAVE_PIN | PMBUS_HAVE_FAN12 | PMBUS_HAVE_TEMP |
473 PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |
474 PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT |
475 PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP |
476 PMBUS_HAVE_STATUS_FAN12 | PMBUS_HAVE_VMON,
477 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
478 PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |
479 PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT,
480 .read_byte_data = ibm_cffps_read_byte_data,
481 .read_word_data = ibm_cffps_read_word_data,
482 },
483};
484
485static struct pmbus_platform_data ibm_cffps_pdata = {
486 .flags = PMBUS_SKIP_STATUS_CHECK | PMBUS_NO_CAPABILITY,
487};
488
489static int ibm_cffps_probe(struct i2c_client *client)
490{
491 int i, rc;
492 enum versions vs = cffps_unknown;
493 struct dentry *debugfs;
494 struct dentry *ibm_cffps_dir;
495 struct ibm_cffps *psu;
496 const void *md = of_device_get_match_data(&client->dev);
497 const struct i2c_device_id *id;
498
499 if (md) {
500 vs = (enum versions)md;
501 } else {
502 id = i2c_match_id(ibm_cffps_id, client);
503 if (id)
504 vs = (enum versions)id->driver_data;
505 }
506
507 if (vs == cffps_unknown) {
508 u16 ccin_revision = 0;
509 u16 ccin_version = CFFPS_CCIN_VERSION_1;
510 int ccin = i2c_smbus_read_word_swapped(client, CFFPS_CCIN_CMD);
511 char mfg_id[I2C_SMBUS_BLOCK_MAX + 2] = { 0 };
512
513 if (ccin > 0) {
514 ccin_revision = FIELD_GET(CFFPS_CCIN_REVISION, ccin);
515 ccin_version = FIELD_GET(CFFPS_CCIN_VERSION, ccin);
516 }
517
518 rc = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, mfg_id);
519 if (rc < 0) {
520 dev_err(&client->dev, "Failed to read Manufacturer ID\n");
521 return rc;
522 }
523
524 switch (ccin_version) {
525 default:
526 case CFFPS_CCIN_VERSION_1:
527 if ((strncmp(mfg_id, "ACBE", 4) == 0) ||
528 (strncmp(mfg_id, "ARTE", 4) == 0))
529 vs = cffps1;
530 else
531 vs = cffps2;
532 break;
533 case CFFPS_CCIN_VERSION_2:
534 vs = cffps2;
535 break;
536 case CFFPS_CCIN_VERSION_3:
537 if (ccin_revision == CFFPS_CCIN_REVISION_LEGACY)
538 vs = cffps1;
539 else
540 vs = cffps2;
541 break;
542 }
543
544 /* Set the client name to include the version number. */
545 snprintf(client->name, I2C_NAME_SIZE, "cffps%d", vs + 1);
546 }
547
548 client->dev.platform_data = &ibm_cffps_pdata;
549 rc = pmbus_do_probe(client, &ibm_cffps_info[vs]);
550 if (rc)
551 return rc;
552
553 /*
554 * Don't fail the probe if there isn't enough memory for leds and
555 * debugfs.
556 */
557 psu = devm_kzalloc(&client->dev, sizeof(*psu), GFP_KERNEL);
558 if (!psu)
559 return 0;
560
561 psu->version = vs;
562 psu->client = client;
563 mutex_init(&psu->input_history.update_lock);
564 psu->input_history.last_update = jiffies - HZ;
565
566 ibm_cffps_create_led_class(psu);
567
568 /* Don't fail the probe if we can't create debugfs */
569 debugfs = pmbus_get_debugfs_dir(client);
570 if (!debugfs)
571 return 0;
572
573 ibm_cffps_dir = debugfs_create_dir(client->name, debugfs);
574 if (!ibm_cffps_dir)
575 return 0;
576
577 for (i = 0; i < CFFPS_DEBUGFS_NUM_ENTRIES; ++i)
578 psu->debugfs_entries[i] = i;
579
580 debugfs_create_file("input_history", 0444, ibm_cffps_dir,
581 &psu->debugfs_entries[CFFPS_DEBUGFS_INPUT_HISTORY],
582 &ibm_cffps_fops);
583 debugfs_create_file("mfg_id", 0444, ibm_cffps_dir,
584 &psu->debugfs_entries[CFFPS_DEBUGFS_MFG_ID],
585 &ibm_cffps_fops);
586 debugfs_create_file("fru", 0444, ibm_cffps_dir,
587 &psu->debugfs_entries[CFFPS_DEBUGFS_FRU],
588 &ibm_cffps_fops);
589 debugfs_create_file("part_number", 0444, ibm_cffps_dir,
590 &psu->debugfs_entries[CFFPS_DEBUGFS_PN],
591 &ibm_cffps_fops);
592 debugfs_create_file("header", 0444, ibm_cffps_dir,
593 &psu->debugfs_entries[CFFPS_DEBUGFS_HEADER],
594 &ibm_cffps_fops);
595 debugfs_create_file("serial_number", 0444, ibm_cffps_dir,
596 &psu->debugfs_entries[CFFPS_DEBUGFS_SN],
597 &ibm_cffps_fops);
598 debugfs_create_file("max_power_out", 0444, ibm_cffps_dir,
599 &psu->debugfs_entries[CFFPS_DEBUGFS_MAX_POWER_OUT],
600 &ibm_cffps_fops);
601 debugfs_create_file("ccin", 0444, ibm_cffps_dir,
602 &psu->debugfs_entries[CFFPS_DEBUGFS_CCIN],
603 &ibm_cffps_fops);
604 debugfs_create_file("fw_version", 0444, ibm_cffps_dir,
605 &psu->debugfs_entries[CFFPS_DEBUGFS_FW],
606 &ibm_cffps_fops);
607 debugfs_create_file("on_off_config", 0644, ibm_cffps_dir,
608 &psu->debugfs_entries[CFFPS_DEBUGFS_ON_OFF_CONFIG],
609 &ibm_cffps_fops);
610
611 return 0;
612}
613
614static const struct i2c_device_id ibm_cffps_id[] = {
615 { "ibm_cffps1", cffps1 },
616 { "ibm_cffps2", cffps2 },
617 { "ibm_cffps", cffps_unknown },
618 {}
619};
620MODULE_DEVICE_TABLE(i2c, ibm_cffps_id);
621
622static const struct of_device_id ibm_cffps_of_match[] = {
623 {
624 .compatible = "ibm,cffps1",
625 .data = (void *)cffps1
626 },
627 {
628 .compatible = "ibm,cffps2",
629 .data = (void *)cffps2
630 },
631 {
632 .compatible = "ibm,cffps",
633 .data = (void *)cffps_unknown
634 },
635 {}
636};
637MODULE_DEVICE_TABLE(of, ibm_cffps_of_match);
638
639static struct i2c_driver ibm_cffps_driver = {
640 .driver = {
641 .name = "ibm-cffps",
642 .of_match_table = ibm_cffps_of_match,
643 },
644 .probe_new = ibm_cffps_probe,
645 .id_table = ibm_cffps_id,
646};
647
648module_i2c_driver(ibm_cffps_driver);
649
650MODULE_AUTHOR("Eddie James");
651MODULE_DESCRIPTION("PMBus driver for IBM Common Form Factor power supplies");
652MODULE_LICENSE("GPL");
653MODULE_IMPORT_NS(PMBUS);