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Staging: netwave: delete the driver
[linux/fpc-iii.git] / drivers / mfd / pcf50633-core.c
blob63a614d696c1994ab037320b5d8fdbb51e7125c1
1 /* NXP PCF50633 Power Management Unit (PMU) driver
2 *
3 * (C) 2006-2008 by Openmoko, Inc.
4 * Author: Harald Welte <laforge@openmoko.org>
5 * Balaji Rao <balajirrao@openmoko.org>
6 * All rights reserved.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14
15 #include <linux/kernel.h>
16 #include <linux/device.h>
17 #include <linux/sysfs.h>
18 #include <linux/module.h>
19 #include <linux/types.h>
20 #include <linux/interrupt.h>
21 #include <linux/workqueue.h>
22 #include <linux/platform_device.h>
23 #include <linux/i2c.h>
24 #include <linux/irq.h>
25 #include <linux/slab.h>
26
27 #include <linux/mfd/pcf50633/core.h>
28
29 /* Two MBCS registers used during cold start */
30 #define PCF50633_REG_MBCS1 0x4b
31 #define PCF50633_REG_MBCS2 0x4c
32 #define PCF50633_MBCS1_USBPRES 0x01
33 #define PCF50633_MBCS1_ADAPTPRES 0x01
34
35 static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data)
36 {
37 int ret;
38
39 ret = i2c_smbus_read_i2c_block_data(pcf->i2c_client, reg,
40 num, data);
41 if (ret < 0)
42 dev_err(pcf->dev, "Error reading %d regs at %d\n", num, reg);
43
44 return ret;
45 }
46
47 static int __pcf50633_write(struct pcf50633 *pcf, u8 reg, int num, u8 *data)
48 {
49 int ret;
50
51 ret = i2c_smbus_write_i2c_block_data(pcf->i2c_client, reg,
52 num, data);
53 if (ret < 0)
54 dev_err(pcf->dev, "Error writing %d regs at %d\n", num, reg);
55
56 return ret;
57
58 }
59
60 /* Read a block of upto 32 regs */
61 int pcf50633_read_block(struct pcf50633 *pcf, u8 reg,
62 int nr_regs, u8 *data)
63 {
64 int ret;
65
66 mutex_lock(&pcf->lock);
67 ret = __pcf50633_read(pcf, reg, nr_regs, data);
68 mutex_unlock(&pcf->lock);
69
70 return ret;
71 }
72 EXPORT_SYMBOL_GPL(pcf50633_read_block);
73
74 /* Write a block of upto 32 regs */
75 int pcf50633_write_block(struct pcf50633 *pcf , u8 reg,
76 int nr_regs, u8 *data)
77 {
78 int ret;
79
80 mutex_lock(&pcf->lock);
81 ret = __pcf50633_write(pcf, reg, nr_regs, data);
82 mutex_unlock(&pcf->lock);
83
84 return ret;
85 }
86 EXPORT_SYMBOL_GPL(pcf50633_write_block);
87
88 u8 pcf50633_reg_read(struct pcf50633 *pcf, u8 reg)
89 {
90 u8 val;
91
92 mutex_lock(&pcf->lock);
93 __pcf50633_read(pcf, reg, 1, &val);
94 mutex_unlock(&pcf->lock);
95
96 return val;
97 }
98 EXPORT_SYMBOL_GPL(pcf50633_reg_read);
99
100 int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val)
101 {
102 int ret;
103
104 mutex_lock(&pcf->lock);
105 ret = __pcf50633_write(pcf, reg, 1, &val);
106 mutex_unlock(&pcf->lock);
107
108 return ret;
109 }
110 EXPORT_SYMBOL_GPL(pcf50633_reg_write);
111
112 int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val)
113 {
114 int ret;
115 u8 tmp;
116
117 val &= mask;
118
119 mutex_lock(&pcf->lock);
120 ret = __pcf50633_read(pcf, reg, 1, &tmp);
121 if (ret < 0)
122 goto out;
123
124 tmp &= ~mask;
125 tmp |= val;
126 ret = __pcf50633_write(pcf, reg, 1, &tmp);
127
128 out:
129 mutex_unlock(&pcf->lock);
130
131 return ret;
132 }
133 EXPORT_SYMBOL_GPL(pcf50633_reg_set_bit_mask);
134
135 int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 val)
136 {
137 int ret;
138 u8 tmp;
139
140 mutex_lock(&pcf->lock);
141 ret = __pcf50633_read(pcf, reg, 1, &tmp);
142 if (ret < 0)
143 goto out;
144
145 tmp &= ~val;
146 ret = __pcf50633_write(pcf, reg, 1, &tmp);
147
148 out:
149 mutex_unlock(&pcf->lock);
150
151 return ret;
152 }
153 EXPORT_SYMBOL_GPL(pcf50633_reg_clear_bits);
154
155 /* sysfs attributes */
156 static ssize_t show_dump_regs(struct device *dev, struct device_attribute *attr,
157 char *buf)
158 {
159 struct pcf50633 *pcf = dev_get_drvdata(dev);
160 u8 dump[16];
161 int n, n1, idx = 0;
162 char *buf1 = buf;
163 static u8 address_no_read[] = { /* must be ascending */
164 PCF50633_REG_INT1,
165 PCF50633_REG_INT2,
166 PCF50633_REG_INT3,
167 PCF50633_REG_INT4,
168 PCF50633_REG_INT5,
169 0 /* terminator */
170 };
171
172 for (n = 0; n < 256; n += sizeof(dump)) {
173 for (n1 = 0; n1 < sizeof(dump); n1++)
174 if (n == address_no_read[idx]) {
175 idx++;
176 dump[n1] = 0x00;
177 } else
178 dump[n1] = pcf50633_reg_read(pcf, n + n1);
179
180 hex_dump_to_buffer(dump, sizeof(dump), 16, 1, buf1, 128, 0);
181 buf1 += strlen(buf1);
182 *buf1++ = '\n';
183 *buf1 = '\0';
184 }
185
186 return buf1 - buf;
187 }
188 static DEVICE_ATTR(dump_regs, 0400, show_dump_regs, NULL);
189
190 static ssize_t show_resume_reason(struct device *dev,
191 struct device_attribute *attr, char *buf)
192 {
193 struct pcf50633 *pcf = dev_get_drvdata(dev);
194 int n;
195
196 n = sprintf(buf, "%02x%02x%02x%02x%02x\n",
197 pcf->resume_reason[0],
198 pcf->resume_reason[1],
199 pcf->resume_reason[2],
200 pcf->resume_reason[3],
201 pcf->resume_reason[4]);
202
203 return n;
204 }
205 static DEVICE_ATTR(resume_reason, 0400, show_resume_reason, NULL);
206
207 static struct attribute *pcf_sysfs_entries[] = {
208 &dev_attr_dump_regs.attr,
209 &dev_attr_resume_reason.attr,
210 NULL,
211 };
212
213 static struct attribute_group pcf_attr_group = {
214 .name = NULL, /* put in device directory */
215 .attrs = pcf_sysfs_entries,
216 };
217
218 int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
219 void (*handler) (int, void *), void *data)
220 {
221 if (irq < 0 || irq > PCF50633_NUM_IRQ || !handler)
222 return -EINVAL;
223
224 if (WARN_ON(pcf->irq_handler[irq].handler))
225 return -EBUSY;
226
227 mutex_lock(&pcf->lock);
228 pcf->irq_handler[irq].handler = handler;
229 pcf->irq_handler[irq].data = data;
230 mutex_unlock(&pcf->lock);
231
232 return 0;
233 }
234 EXPORT_SYMBOL_GPL(pcf50633_register_irq);
235
236 int pcf50633_free_irq(struct pcf50633 *pcf, int irq)
237 {
238 if (irq < 0 || irq > PCF50633_NUM_IRQ)
239 return -EINVAL;
240
241 mutex_lock(&pcf->lock);
242 pcf->irq_handler[irq].handler = NULL;
243 mutex_unlock(&pcf->lock);
244
245 return 0;
246 }
247 EXPORT_SYMBOL_GPL(pcf50633_free_irq);
248
249 static int __pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, u8 mask)
250 {
251 u8 reg, bits, tmp;
252 int ret = 0, idx;
253
254 idx = irq >> 3;
255 reg = PCF50633_REG_INT1M + idx;
256 bits = 1 << (irq & 0x07);
257
258 mutex_lock(&pcf->lock);
259
260 if (mask) {
261 ret = __pcf50633_read(pcf, reg, 1, &tmp);
262 if (ret < 0)
263 goto out;
264
265 tmp |= bits;
266
267 ret = __pcf50633_write(pcf, reg, 1, &tmp);
268 if (ret < 0)
269 goto out;
270
271 pcf->mask_regs[idx] &= ~bits;
272 pcf->mask_regs[idx] |= bits;
273 } else {
274 ret = __pcf50633_read(pcf, reg, 1, &tmp);
275 if (ret < 0)
276 goto out;
277
278 tmp &= ~bits;
279
280 ret = __pcf50633_write(pcf, reg, 1, &tmp);
281 if (ret < 0)
282 goto out;
283
284 pcf->mask_regs[idx] &= ~bits;
285 }
286 out:
287 mutex_unlock(&pcf->lock);
288
289 return ret;
290 }
291
292 int pcf50633_irq_mask(struct pcf50633 *pcf, int irq)
293 {
294 dev_dbg(pcf->dev, "Masking IRQ %d\n", irq);
295
296 return __pcf50633_irq_mask_set(pcf, irq, 1);
297 }
298 EXPORT_SYMBOL_GPL(pcf50633_irq_mask);
299
300 int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq)
301 {
302 dev_dbg(pcf->dev, "Unmasking IRQ %d\n", irq);
303
304 return __pcf50633_irq_mask_set(pcf, irq, 0);
305 }
306 EXPORT_SYMBOL_GPL(pcf50633_irq_unmask);
307
308 int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq)
309 {
310 u8 reg, bits;
311
312 reg = irq >> 3;
313 bits = 1 << (irq & 0x07);
314
315 return pcf->mask_regs[reg] & bits;
316 }
317 EXPORT_SYMBOL_GPL(pcf50633_irq_mask_get);
318
319 static void pcf50633_irq_call_handler(struct pcf50633 *pcf, int irq)
320 {
321 if (pcf->irq_handler[irq].handler)
322 pcf->irq_handler[irq].handler(irq, pcf->irq_handler[irq].data);
323 }
324
325 /* Maximum amount of time ONKEY is held before emergency action is taken */
326 #define PCF50633_ONKEY1S_TIMEOUT 8
327
328 static void pcf50633_irq_worker(struct work_struct *work)
329 {
330 struct pcf50633 *pcf;
331 int ret, i, j;
332 u8 pcf_int[5], chgstat;
333
334 pcf = container_of(work, struct pcf50633, irq_work);
335
336 /* Read the 5 INT regs in one transaction */
337 ret = pcf50633_read_block(pcf, PCF50633_REG_INT1,
338 ARRAY_SIZE(pcf_int), pcf_int);
339 if (ret != ARRAY_SIZE(pcf_int)) {
340 dev_err(pcf->dev, "Error reading INT registers\n");
341
342 /*
343 * If this doesn't ACK the interrupt to the chip, we'll be
344 * called once again as we're level triggered.
345 */
346 goto out;
347 }
348
349 /* defeat 8s death from lowsys on A5 */
350 pcf50633_reg_write(pcf, PCF50633_REG_OOCSHDWN, 0x04);
351
352 /* We immediately read the usb and adapter status. We thus make sure
353 * only of USBINS/USBREM IRQ handlers are called */
354 if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) {
355 chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
356 if (chgstat & (0x3 << 4))
357 pcf_int[0] &= ~(1 << PCF50633_INT1_USBREM);
358 else
359 pcf_int[0] &= ~(1 << PCF50633_INT1_USBINS);
360 }
361
362 /* Make sure only one of ADPINS or ADPREM is set */
363 if (pcf_int[0] & (PCF50633_INT1_ADPINS | PCF50633_INT1_ADPREM)) {
364 chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
365 if (chgstat & (0x3 << 4))
366 pcf_int[0] &= ~(1 << PCF50633_INT1_ADPREM);
367 else
368 pcf_int[0] &= ~(1 << PCF50633_INT1_ADPINS);
369 }
370
371 dev_dbg(pcf->dev, "INT1=0x%02x INT2=0x%02x INT3=0x%02x "
372 "INT4=0x%02x INT5=0x%02x\n", pcf_int[0],
373 pcf_int[1], pcf_int[2], pcf_int[3], pcf_int[4]);
374
375 /* Some revisions of the chip don't have a 8s standby mode on
376 * ONKEY1S press. We try to manually do it in such cases. */
377 if ((pcf_int[0] & PCF50633_INT1_SECOND) && pcf->onkey1s_held) {
378 dev_info(pcf->dev, "ONKEY1S held for %d secs\n",
379 pcf->onkey1s_held);
380 if (pcf->onkey1s_held++ == PCF50633_ONKEY1S_TIMEOUT)
381 if (pcf->pdata->force_shutdown)
382 pcf->pdata->force_shutdown(pcf);
383 }
384
385 if (pcf_int[2] & PCF50633_INT3_ONKEY1S) {
386 dev_info(pcf->dev, "ONKEY1S held\n");
387 pcf->onkey1s_held = 1 ;
388
389 /* Unmask IRQ_SECOND */
390 pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M,
391 PCF50633_INT1_SECOND);
392
393 /* Unmask IRQ_ONKEYR */
394 pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT2M,
395 PCF50633_INT2_ONKEYR);
396 }
397
398 if ((pcf_int[1] & PCF50633_INT2_ONKEYR) && pcf->onkey1s_held) {
399 pcf->onkey1s_held = 0;
400
401 /* Mask SECOND and ONKEYR interrupts */
402 if (pcf->mask_regs[0] & PCF50633_INT1_SECOND)
403 pcf50633_reg_set_bit_mask(pcf,
404 PCF50633_REG_INT1M,
405 PCF50633_INT1_SECOND,
406 PCF50633_INT1_SECOND);
407
408 if (pcf->mask_regs[1] & PCF50633_INT2_ONKEYR)
409 pcf50633_reg_set_bit_mask(pcf,
410 PCF50633_REG_INT2M,
411 PCF50633_INT2_ONKEYR,
412 PCF50633_INT2_ONKEYR);
413 }
414
415 /* Have we just resumed ? */
416 if (pcf->is_suspended) {
417 pcf->is_suspended = 0;
418
419 /* Set the resume reason filtering out non resumers */
420 for (i = 0; i < ARRAY_SIZE(pcf_int); i++)
421 pcf->resume_reason[i] = pcf_int[i] &
422 pcf->pdata->resumers[i];
423
424 /* Make sure we don't pass on any ONKEY events to
425 * userspace now */
426 pcf_int[1] &= ~(PCF50633_INT2_ONKEYR | PCF50633_INT2_ONKEYF);
427 }
428
429 for (i = 0; i < ARRAY_SIZE(pcf_int); i++) {
430 /* Unset masked interrupts */
431 pcf_int[i] &= ~pcf->mask_regs[i];
432
433 for (j = 0; j < 8 ; j++)
434 if (pcf_int[i] & (1 << j))
435 pcf50633_irq_call_handler(pcf, (i * 8) + j);
436 }
437
438 out:
439 put_device(pcf->dev);
440 enable_irq(pcf->irq);
441 }
442
443 static irqreturn_t pcf50633_irq(int irq, void *data)
444 {
445 struct pcf50633 *pcf = data;
446
447 dev_dbg(pcf->dev, "pcf50633_irq\n");
448
449 get_device(pcf->dev);
450 disable_irq_nosync(pcf->irq);
451 queue_work(pcf->work_queue, &pcf->irq_work);
452
453 return IRQ_HANDLED;
454 }
455
456 static void
457 pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name,
458 struct platform_device **pdev)
459 {
460 int ret;
461
462 *pdev = platform_device_alloc(name, -1);
463 if (!*pdev) {
464 dev_err(pcf->dev, "Falied to allocate %s\n", name);
465 return;
466 }
467
468 (*pdev)->dev.parent = pcf->dev;
469
470 ret = platform_device_add(*pdev);
471 if (ret) {
472 dev_err(pcf->dev, "Failed to register %s: %d\n", name, ret);
473 platform_device_put(*pdev);
474 *pdev = NULL;
475 }
476 }
477
478 #ifdef CONFIG_PM
479 static int pcf50633_suspend(struct i2c_client *client, pm_message_t state)
480 {
481 struct pcf50633 *pcf;
482 int ret = 0, i;
483 u8 res[5];
484
485 pcf = i2c_get_clientdata(client);
486
487 /* Make sure our interrupt handlers are not called
488 * henceforth */
489 disable_irq(pcf->irq);
490
491 /* Make sure that any running IRQ worker has quit */
492 cancel_work_sync(&pcf->irq_work);
493
494 /* Save the masks */
495 ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M,
496 ARRAY_SIZE(pcf->suspend_irq_masks),
497 pcf->suspend_irq_masks);
498 if (ret < 0) {
499 dev_err(pcf->dev, "error saving irq masks\n");
500 goto out;
501 }
502
503 /* Write wakeup irq masks */
504 for (i = 0; i < ARRAY_SIZE(res); i++)
505 res[i] = ~pcf->pdata->resumers[i];
506
507 ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
508 ARRAY_SIZE(res), &res[0]);
509 if (ret < 0) {
510 dev_err(pcf->dev, "error writing wakeup irq masks\n");
511 goto out;
512 }
513
514 pcf->is_suspended = 1;
515
516 out:
517 return ret;
518 }
519
520 static int pcf50633_resume(struct i2c_client *client)
521 {
522 struct pcf50633 *pcf;
523 int ret;
524
525 pcf = i2c_get_clientdata(client);
526
527 /* Write the saved mask registers */
528 ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
529 ARRAY_SIZE(pcf->suspend_irq_masks),
530 pcf->suspend_irq_masks);
531 if (ret < 0)
532 dev_err(pcf->dev, "Error restoring saved suspend masks\n");
533
534 /* Restore regulators' state */
535
536
537 get_device(pcf->dev);
538
539 /*
540 * Clear any pending interrupts and set resume reason if any.
541 * This will leave with enable_irq()
542 */
543 pcf50633_irq_worker(&pcf->irq_work);
544
545 return 0;
546 }
547 #else
548 #define pcf50633_suspend NULL
549 #define pcf50633_resume NULL
550 #endif
551
552 static int __devinit pcf50633_probe(struct i2c_client *client,
553 const struct i2c_device_id *ids)
554 {
555 struct pcf50633 *pcf;
556 struct pcf50633_platform_data *pdata = client->dev.platform_data;
557 int i, ret;
558 int version, variant;
559
560 if (!client->irq) {
561 dev_err(&client->dev, "Missing IRQ\n");
562 return -ENOENT;
563 }
564
565 pcf = kzalloc(sizeof(*pcf), GFP_KERNEL);
566 if (!pcf)
567 return -ENOMEM;
568
569 pcf->pdata = pdata;
570
571 mutex_init(&pcf->lock);
572
573 i2c_set_clientdata(client, pcf);
574 pcf->dev = &client->dev;
575 pcf->i2c_client = client;
576 pcf->irq = client->irq;
577 pcf->work_queue = create_singlethread_workqueue("pcf50633");
578
579 if (!pcf->work_queue) {
580 dev_err(&client->dev, "Failed to alloc workqueue\n");
581 ret = -ENOMEM;
582 goto err_free;
583 }
584
585 INIT_WORK(&pcf->irq_work, pcf50633_irq_worker);
586
587 version = pcf50633_reg_read(pcf, 0);
588 variant = pcf50633_reg_read(pcf, 1);
589 if (version < 0 || variant < 0) {
590 dev_err(pcf->dev, "Unable to probe pcf50633\n");
591 ret = -ENODEV;
592 goto err_destroy_workqueue;
593 }
594
595 dev_info(pcf->dev, "Probed device version %d variant %d\n",
596 version, variant);
597
598 /* Enable all interrupts except RTC SECOND */
599 pcf->mask_regs[0] = 0x80;
600 pcf50633_reg_write(pcf, PCF50633_REG_INT1M, pcf->mask_regs[0]);
601 pcf50633_reg_write(pcf, PCF50633_REG_INT2M, 0x00);
602 pcf50633_reg_write(pcf, PCF50633_REG_INT3M, 0x00);
603 pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00);
604 pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00);
605
606 ret = request_irq(client->irq, pcf50633_irq,
607 IRQF_TRIGGER_LOW, "pcf50633", pcf);
608
609 if (ret) {
610 dev_err(pcf->dev, "Failed to request IRQ %d\n", ret);
611 goto err_destroy_workqueue;
612 }
613
614 /* Create sub devices */
615 pcf50633_client_dev_register(pcf, "pcf50633-input",
616 &pcf->input_pdev);
617 pcf50633_client_dev_register(pcf, "pcf50633-rtc",
618 &pcf->rtc_pdev);
619 pcf50633_client_dev_register(pcf, "pcf50633-mbc",
620 &pcf->mbc_pdev);
621 pcf50633_client_dev_register(pcf, "pcf50633-adc",
622 &pcf->adc_pdev);
623
624 for (i = 0; i < PCF50633_NUM_REGULATORS; i++) {
625 struct platform_device *pdev;
626
627 pdev = platform_device_alloc("pcf50633-regltr", i);
628 if (!pdev) {
629 dev_err(pcf->dev, "Cannot create regulator %d\n", i);
630 continue;
631 }
632
633 pdev->dev.parent = pcf->dev;
634 platform_device_add_data(pdev, &pdata->reg_init_data[i],
635 sizeof(pdata->reg_init_data[i]));
636 pcf->regulator_pdev[i] = pdev;
637
638 platform_device_add(pdev);
639 }
640
641 if (enable_irq_wake(client->irq) < 0)
642 dev_err(pcf->dev, "IRQ %u cannot be enabled as wake-up source"
643 "in this hardware revision", client->irq);
644
645 ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group);
646 if (ret)
647 dev_err(pcf->dev, "error creating sysfs entries\n");
648
649 if (pdata->probe_done)
650 pdata->probe_done(pcf);
651
652 return 0;
653
654 err_destroy_workqueue:
655 destroy_workqueue(pcf->work_queue);
656 err_free:
657 i2c_set_clientdata(client, NULL);
658 kfree(pcf);
659
660 return ret;
661 }
662
663 static int __devexit pcf50633_remove(struct i2c_client *client)
664 {
665 struct pcf50633 *pcf = i2c_get_clientdata(client);
666 int i;
667
668 free_irq(pcf->irq, pcf);
669 destroy_workqueue(pcf->work_queue);
670
671 platform_device_unregister(pcf->input_pdev);
672 platform_device_unregister(pcf->rtc_pdev);
673 platform_device_unregister(pcf->mbc_pdev);
674 platform_device_unregister(pcf->adc_pdev);
675
676 for (i = 0; i < PCF50633_NUM_REGULATORS; i++)
677 platform_device_unregister(pcf->regulator_pdev[i]);
678
679 kfree(pcf);
680
681 return 0;
682 }
683
684 static struct i2c_device_id pcf50633_id_table[] = {
685 {"pcf50633", 0x73},
686 {/* end of list */}
687 };
688
689 static struct i2c_driver pcf50633_driver = {
690 .driver = {
691 .name = "pcf50633",
692 },
693 .id_table = pcf50633_id_table,
694 .probe = pcf50633_probe,
695 .remove = __devexit_p(pcf50633_remove),
696 .suspend = pcf50633_suspend,
697 .resume = pcf50633_resume,
698 };
699
700 static int __init pcf50633_init(void)
701 {
702 return i2c_add_driver(&pcf50633_driver);
703 }
704
705 static void __exit pcf50633_exit(void)
706 {
707 i2c_del_driver(&pcf50633_driver);
708 }
709
710 MODULE_DESCRIPTION("I2C chip driver for NXP PCF50633 PMU");
711 MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
712 MODULE_LICENSE("GPL");
713
714 subsys_initcall(pcf50633_init);
715 module_exit(pcf50633_exit);
Linux with added FPC-III support