blob: b3bef4998744a6b79f2a234e2eb256c1c326bac9 [file] [log] [blame]
Balaji Raof52046b2009-01-09 01:49:01 +01001/* 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>
Balaji Raof52046b2009-01-09 01:49:01 +010018#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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090025#include <linux/slab.h>
Balaji Raof52046b2009-01-09 01:49:01 +010026
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
35static 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
47static 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 */
61int 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}
72EXPORT_SYMBOL_GPL(pcf50633_read_block);
73
74/* Write a block of upto 32 regs */
75int 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}
86EXPORT_SYMBOL_GPL(pcf50633_write_block);
87
88u8 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}
98EXPORT_SYMBOL_GPL(pcf50633_reg_read);
99
100int 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}
110EXPORT_SYMBOL_GPL(pcf50633_reg_write);
111
112int 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
128out:
129 mutex_unlock(&pcf->lock);
130
131 return ret;
132}
133EXPORT_SYMBOL_GPL(pcf50633_reg_set_bit_mask);
134
135int 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
148out:
149 mutex_unlock(&pcf->lock);
150
151 return ret;
152}
153EXPORT_SYMBOL_GPL(pcf50633_reg_clear_bits);
154
155/* sysfs attributes */
156static 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}
188static DEVICE_ATTR(dump_regs, 0400, show_dump_regs, NULL);
189
190static 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}
205static DEVICE_ATTR(resume_reason, 0400, show_resume_reason, NULL);
206
207static struct attribute *pcf_sysfs_entries[] = {
208 &dev_attr_dump_regs.attr,
209 &dev_attr_resume_reason.attr,
210 NULL,
211};
212
213static struct attribute_group pcf_attr_group = {
214 .name = NULL, /* put in device directory */
215 .attrs = pcf_sysfs_entries,
216};
217
218int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
219 void (*handler) (int, void *), void *data)
220{
Dan Carpenter165bce92010-03-28 14:28:08 +0300221 if (irq < 0 || irq >= PCF50633_NUM_IRQ || !handler)
Balaji Raof52046b2009-01-09 01:49:01 +0100222 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}
234EXPORT_SYMBOL_GPL(pcf50633_register_irq);
235
236int pcf50633_free_irq(struct pcf50633 *pcf, int irq)
237{
Dan Carpenter165bce92010-03-28 14:28:08 +0300238 if (irq < 0 || irq >= PCF50633_NUM_IRQ)
Balaji Raof52046b2009-01-09 01:49:01 +0100239 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}
247EXPORT_SYMBOL_GPL(pcf50633_free_irq);
248
249static 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 }
286out:
287 mutex_unlock(&pcf->lock);
288
289 return ret;
290}
291
292int pcf50633_irq_mask(struct pcf50633 *pcf, int irq)
293{
Arnaud Patardb18fdc42009-10-14 02:12:32 +0400294 dev_dbg(pcf->dev, "Masking IRQ %d\n", irq);
Balaji Raof52046b2009-01-09 01:49:01 +0100295
296 return __pcf50633_irq_mask_set(pcf, irq, 1);
297}
298EXPORT_SYMBOL_GPL(pcf50633_irq_mask);
299
300int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq)
301{
Arnaud Patardb18fdc42009-10-14 02:12:32 +0400302 dev_dbg(pcf->dev, "Unmasking IRQ %d\n", irq);
Balaji Raof52046b2009-01-09 01:49:01 +0100303
304 return __pcf50633_irq_mask_set(pcf, irq, 0);
305}
306EXPORT_SYMBOL_GPL(pcf50633_irq_unmask);
307
308int 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}
317EXPORT_SYMBOL_GPL(pcf50633_irq_mask_get);
318
319static 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
Lars-Peter Clausenf7b2a772010-05-12 02:10:55 +0200328static irqreturn_t pcf50633_irq(int irq, void *data)
Balaji Raof52046b2009-01-09 01:49:01 +0100329{
Lars-Peter Clausenf7b2a772010-05-12 02:10:55 +0200330 struct pcf50633 *pcf = data;
Balaji Raof52046b2009-01-09 01:49:01 +0100331 int ret, i, j;
332 u8 pcf_int[5], chgstat;
333
Balaji Raof52046b2009-01-09 01:49:01 +0100334 /* Read the 5 INT regs in one transaction */
335 ret = pcf50633_read_block(pcf, PCF50633_REG_INT1,
336 ARRAY_SIZE(pcf_int), pcf_int);
337 if (ret != ARRAY_SIZE(pcf_int)) {
338 dev_err(pcf->dev, "Error reading INT registers\n");
339
340 /*
341 * If this doesn't ACK the interrupt to the chip, we'll be
342 * called once again as we're level triggered.
343 */
344 goto out;
345 }
346
Paul Fertser06b1cc92009-10-14 02:12:30 +0400347 /* defeat 8s death from lowsys on A5 */
348 pcf50633_reg_write(pcf, PCF50633_REG_OOCSHDWN, 0x04);
349
Balaji Raof52046b2009-01-09 01:49:01 +0100350 /* We immediately read the usb and adapter status. We thus make sure
351 * only of USBINS/USBREM IRQ handlers are called */
352 if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) {
353 chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
354 if (chgstat & (0x3 << 4))
Lars-Peter Clausen0aeee5d2010-05-12 02:10:53 +0200355 pcf_int[0] &= ~PCF50633_INT1_USBREM;
Balaji Raof52046b2009-01-09 01:49:01 +0100356 else
Lars-Peter Clausen0aeee5d2010-05-12 02:10:53 +0200357 pcf_int[0] &= ~PCF50633_INT1_USBINS;
Balaji Raof52046b2009-01-09 01:49:01 +0100358 }
359
360 /* Make sure only one of ADPINS or ADPREM is set */
361 if (pcf_int[0] & (PCF50633_INT1_ADPINS | PCF50633_INT1_ADPREM)) {
362 chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
363 if (chgstat & (0x3 << 4))
Lars-Peter Clausen0aeee5d2010-05-12 02:10:53 +0200364 pcf_int[0] &= ~PCF50633_INT1_ADPREM;
Balaji Raof52046b2009-01-09 01:49:01 +0100365 else
Lars-Peter Clausen0aeee5d2010-05-12 02:10:53 +0200366 pcf_int[0] &= ~PCF50633_INT1_ADPINS;
Balaji Raof52046b2009-01-09 01:49:01 +0100367 }
368
369 dev_dbg(pcf->dev, "INT1=0x%02x INT2=0x%02x INT3=0x%02x "
370 "INT4=0x%02x INT5=0x%02x\n", pcf_int[0],
371 pcf_int[1], pcf_int[2], pcf_int[3], pcf_int[4]);
372
373 /* Some revisions of the chip don't have a 8s standby mode on
374 * ONKEY1S press. We try to manually do it in such cases. */
375 if ((pcf_int[0] & PCF50633_INT1_SECOND) && pcf->onkey1s_held) {
376 dev_info(pcf->dev, "ONKEY1S held for %d secs\n",
377 pcf->onkey1s_held);
378 if (pcf->onkey1s_held++ == PCF50633_ONKEY1S_TIMEOUT)
379 if (pcf->pdata->force_shutdown)
380 pcf->pdata->force_shutdown(pcf);
381 }
382
383 if (pcf_int[2] & PCF50633_INT3_ONKEY1S) {
384 dev_info(pcf->dev, "ONKEY1S held\n");
385 pcf->onkey1s_held = 1 ;
386
387 /* Unmask IRQ_SECOND */
388 pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M,
389 PCF50633_INT1_SECOND);
390
391 /* Unmask IRQ_ONKEYR */
392 pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT2M,
393 PCF50633_INT2_ONKEYR);
394 }
395
396 if ((pcf_int[1] & PCF50633_INT2_ONKEYR) && pcf->onkey1s_held) {
397 pcf->onkey1s_held = 0;
398
399 /* Mask SECOND and ONKEYR interrupts */
400 if (pcf->mask_regs[0] & PCF50633_INT1_SECOND)
401 pcf50633_reg_set_bit_mask(pcf,
402 PCF50633_REG_INT1M,
403 PCF50633_INT1_SECOND,
404 PCF50633_INT1_SECOND);
405
406 if (pcf->mask_regs[1] & PCF50633_INT2_ONKEYR)
407 pcf50633_reg_set_bit_mask(pcf,
408 PCF50633_REG_INT2M,
409 PCF50633_INT2_ONKEYR,
410 PCF50633_INT2_ONKEYR);
411 }
412
413 /* Have we just resumed ? */
414 if (pcf->is_suspended) {
415 pcf->is_suspended = 0;
416
417 /* Set the resume reason filtering out non resumers */
418 for (i = 0; i < ARRAY_SIZE(pcf_int); i++)
419 pcf->resume_reason[i] = pcf_int[i] &
420 pcf->pdata->resumers[i];
421
422 /* Make sure we don't pass on any ONKEY events to
423 * userspace now */
424 pcf_int[1] &= ~(PCF50633_INT2_ONKEYR | PCF50633_INT2_ONKEYF);
425 }
426
427 for (i = 0; i < ARRAY_SIZE(pcf_int); i++) {
428 /* Unset masked interrupts */
429 pcf_int[i] &= ~pcf->mask_regs[i];
430
431 for (j = 0; j < 8 ; j++)
432 if (pcf_int[i] & (1 << j))
433 pcf50633_irq_call_handler(pcf, (i * 8) + j);
434 }
435
436out:
Lars-Peter Clausenf7b2a772010-05-12 02:10:55 +0200437 return IRQ_HANDLED
Balaji Raof52046b2009-01-09 01:49:01 +0100438}
439
440static void
441pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name,
442 struct platform_device **pdev)
443{
Balaji Raof52046b2009-01-09 01:49:01 +0100444 int ret;
445
446 *pdev = platform_device_alloc(name, -1);
447 if (!*pdev) {
448 dev_err(pcf->dev, "Falied to allocate %s\n", name);
449 return;
450 }
451
Balaji Raof52046b2009-01-09 01:49:01 +0100452 (*pdev)->dev.parent = pcf->dev;
453
454 ret = platform_device_add(*pdev);
455 if (ret) {
456 dev_err(pcf->dev, "Failed to register %s: %d\n", name, ret);
457 platform_device_put(*pdev);
458 *pdev = NULL;
459 }
460}
461
462#ifdef CONFIG_PM
Lars-Peter Clausen25993e42009-10-14 02:12:31 +0400463static int pcf50633_suspend(struct i2c_client *client, pm_message_t state)
Balaji Raof52046b2009-01-09 01:49:01 +0100464{
465 struct pcf50633 *pcf;
466 int ret = 0, i;
467 u8 res[5];
468
Lars-Peter Clausen25993e42009-10-14 02:12:31 +0400469 pcf = i2c_get_clientdata(client);
Balaji Raof52046b2009-01-09 01:49:01 +0100470
471 /* Make sure our interrupt handlers are not called
472 * henceforth */
473 disable_irq(pcf->irq);
474
Balaji Raof52046b2009-01-09 01:49:01 +0100475 /* Save the masks */
476 ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M,
477 ARRAY_SIZE(pcf->suspend_irq_masks),
478 pcf->suspend_irq_masks);
479 if (ret < 0) {
480 dev_err(pcf->dev, "error saving irq masks\n");
481 goto out;
482 }
483
484 /* Write wakeup irq masks */
485 for (i = 0; i < ARRAY_SIZE(res); i++)
486 res[i] = ~pcf->pdata->resumers[i];
487
488 ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
489 ARRAY_SIZE(res), &res[0]);
490 if (ret < 0) {
491 dev_err(pcf->dev, "error writing wakeup irq masks\n");
492 goto out;
493 }
494
495 pcf->is_suspended = 1;
496
497out:
498 return ret;
499}
500
Lars-Peter Clausen25993e42009-10-14 02:12:31 +0400501static int pcf50633_resume(struct i2c_client *client)
Balaji Raof52046b2009-01-09 01:49:01 +0100502{
503 struct pcf50633 *pcf;
504 int ret;
505
Lars-Peter Clausen25993e42009-10-14 02:12:31 +0400506 pcf = i2c_get_clientdata(client);
Balaji Raof52046b2009-01-09 01:49:01 +0100507
508 /* Write the saved mask registers */
509 ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
510 ARRAY_SIZE(pcf->suspend_irq_masks),
511 pcf->suspend_irq_masks);
512 if (ret < 0)
513 dev_err(pcf->dev, "Error restoring saved suspend masks\n");
514
Lars-Peter Clausenf7b2a772010-05-12 02:10:55 +0200515 enable_irq(pcf->irq);
Balaji Raof52046b2009-01-09 01:49:01 +0100516
517 return 0;
518}
519#else
520#define pcf50633_suspend NULL
521#define pcf50633_resume NULL
522#endif
523
524static int __devinit pcf50633_probe(struct i2c_client *client,
525 const struct i2c_device_id *ids)
526{
527 struct pcf50633 *pcf;
528 struct pcf50633_platform_data *pdata = client->dev.platform_data;
Lars-Peter Clausen24213ae2009-10-08 00:24:54 +0200529 int i, ret;
Balaji Raof52046b2009-01-09 01:49:01 +0100530 int version, variant;
531
Lars-Peter Clausen24213ae2009-10-08 00:24:54 +0200532 if (!client->irq) {
533 dev_err(&client->dev, "Missing IRQ\n");
534 return -ENOENT;
535 }
536
Balaji Raof52046b2009-01-09 01:49:01 +0100537 pcf = kzalloc(sizeof(*pcf), GFP_KERNEL);
538 if (!pcf)
539 return -ENOMEM;
540
541 pcf->pdata = pdata;
542
543 mutex_init(&pcf->lock);
544
545 i2c_set_clientdata(client, pcf);
546 pcf->dev = &client->dev;
547 pcf->i2c_client = client;
548 pcf->irq = client->irq;
Balaji Raof52046b2009-01-09 01:49:01 +0100549
550 version = pcf50633_reg_read(pcf, 0);
551 variant = pcf50633_reg_read(pcf, 1);
552 if (version < 0 || variant < 0) {
553 dev_err(pcf->dev, "Unable to probe pcf50633\n");
554 ret = -ENODEV;
Lars-Peter Clausenf7b2a772010-05-12 02:10:55 +0200555 goto err_free;
Balaji Raof52046b2009-01-09 01:49:01 +0100556 }
557
558 dev_info(pcf->dev, "Probed device version %d variant %d\n",
559 version, variant);
560
561 /* Enable all interrupts except RTC SECOND */
562 pcf->mask_regs[0] = 0x80;
563 pcf50633_reg_write(pcf, PCF50633_REG_INT1M, pcf->mask_regs[0]);
564 pcf50633_reg_write(pcf, PCF50633_REG_INT2M, 0x00);
565 pcf50633_reg_write(pcf, PCF50633_REG_INT3M, 0x00);
566 pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00);
567 pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00);
568
Lars-Peter Clausenf7b2a772010-05-12 02:10:55 +0200569 ret = request_threaded_irq(client->irq, NULL, pcf50633_irq,
570 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
571 "pcf50633", pcf);
Lars-Peter Clausen24213ae2009-10-08 00:24:54 +0200572
573 if (ret) {
574 dev_err(pcf->dev, "Failed to request IRQ %d\n", ret);
Lars-Peter Clausenf7b2a772010-05-12 02:10:55 +0200575 goto err_free;
Lars-Peter Clausen24213ae2009-10-08 00:24:54 +0200576 }
577
Balaji Raof52046b2009-01-09 01:49:01 +0100578 /* Create sub devices */
579 pcf50633_client_dev_register(pcf, "pcf50633-input",
580 &pcf->input_pdev);
581 pcf50633_client_dev_register(pcf, "pcf50633-rtc",
582 &pcf->rtc_pdev);
583 pcf50633_client_dev_register(pcf, "pcf50633-mbc",
584 &pcf->mbc_pdev);
585 pcf50633_client_dev_register(pcf, "pcf50633-adc",
586 &pcf->adc_pdev);
Lars-Peter Clausenf5bf4032010-05-12 02:44:33 +0200587 pcf50633_client_dev_register(pcf, "pcf50633-backlight",
588 &pcf->bl_pdev);
589
Balaji Raof52046b2009-01-09 01:49:01 +0100590
591 for (i = 0; i < PCF50633_NUM_REGULATORS; i++) {
592 struct platform_device *pdev;
593
594 pdev = platform_device_alloc("pcf50633-regltr", i);
595 if (!pdev) {
Lars-Peter Clausen24213ae2009-10-08 00:24:54 +0200596 dev_err(pcf->dev, "Cannot create regulator %d\n", i);
Balaji Raof52046b2009-01-09 01:49:01 +0100597 continue;
598 }
599
600 pdev->dev.parent = pcf->dev;
Lars-Peter Clausenbbb2e492009-10-14 02:12:35 +0400601 platform_device_add_data(pdev, &pdata->reg_init_data[i],
602 sizeof(pdata->reg_init_data[i]));
Balaji Raof52046b2009-01-09 01:49:01 +0100603 pcf->regulator_pdev[i] = pdev;
604
605 platform_device_add(pdev);
606 }
607
Balaji Raof52046b2009-01-09 01:49:01 +0100608 if (enable_irq_wake(client->irq) < 0)
609 dev_err(pcf->dev, "IRQ %u cannot be enabled as wake-up source"
610 "in this hardware revision", client->irq);
611
612 ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group);
613 if (ret)
614 dev_err(pcf->dev, "error creating sysfs entries\n");
615
616 if (pdata->probe_done)
617 pdata->probe_done(pcf);
618
619 return 0;
620
Lars-Peter Clausen24213ae2009-10-08 00:24:54 +0200621err_free:
622 i2c_set_clientdata(client, NULL);
Balaji Raof52046b2009-01-09 01:49:01 +0100623 kfree(pcf);
Lars-Peter Clausen24213ae2009-10-08 00:24:54 +0200624
Balaji Raof52046b2009-01-09 01:49:01 +0100625 return ret;
626}
627
628static int __devexit pcf50633_remove(struct i2c_client *client)
629{
630 struct pcf50633 *pcf = i2c_get_clientdata(client);
631 int i;
632
633 free_irq(pcf->irq, pcf);
634
635 platform_device_unregister(pcf->input_pdev);
636 platform_device_unregister(pcf->rtc_pdev);
637 platform_device_unregister(pcf->mbc_pdev);
638 platform_device_unregister(pcf->adc_pdev);
639
640 for (i = 0; i < PCF50633_NUM_REGULATORS; i++)
641 platform_device_unregister(pcf->regulator_pdev[i]);
642
Wolfram Sangf322d5f2010-03-20 15:12:54 +0100643 i2c_set_clientdata(client, NULL);
Balaji Raof52046b2009-01-09 01:49:01 +0100644 kfree(pcf);
645
646 return 0;
647}
648
649static struct i2c_device_id pcf50633_id_table[] = {
650 {"pcf50633", 0x73},
Jean Delvare8915e542009-02-17 09:07:02 +0100651 {/* end of list */}
Balaji Raof52046b2009-01-09 01:49:01 +0100652};
653
654static struct i2c_driver pcf50633_driver = {
655 .driver = {
656 .name = "pcf50633",
Balaji Raof52046b2009-01-09 01:49:01 +0100657 },
658 .id_table = pcf50633_id_table,
659 .probe = pcf50633_probe,
660 .remove = __devexit_p(pcf50633_remove),
Lars-Peter Clausen25993e42009-10-14 02:12:31 +0400661 .suspend = pcf50633_suspend,
662 .resume = pcf50633_resume,
Balaji Raof52046b2009-01-09 01:49:01 +0100663};
664
665static int __init pcf50633_init(void)
666{
667 return i2c_add_driver(&pcf50633_driver);
668}
669
670static void __exit pcf50633_exit(void)
671{
672 i2c_del_driver(&pcf50633_driver);
673}
674
675MODULE_DESCRIPTION("I2C chip driver for NXP PCF50633 PMU");
676MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
677MODULE_LICENSE("GPL");
678
Samuel Ortiz2021de82009-06-15 18:04:54 +0200679subsys_initcall(pcf50633_init);
Balaji Raof52046b2009-01-09 01:49:01 +0100680module_exit(pcf50633_exit);