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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
[deliverable/linux.git] / drivers / mfd / wm8350-core.c
1 /*
2 * wm8350-core.c -- Device access for Wolfson WM8350
3 *
4 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
5 *
6 * Author: Liam Girdwood, Mark Brown
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/module.h>
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/bug.h>
20 #include <linux/device.h>
21 #include <linux/delay.h>
22 #include <linux/interrupt.h>
23 #include <linux/regmap.h>
24 #include <linux/workqueue.h>
25
26 #include <linux/mfd/wm8350/core.h>
27 #include <linux/mfd/wm8350/audio.h>
28 #include <linux/mfd/wm8350/comparator.h>
29 #include <linux/mfd/wm8350/gpio.h>
30 #include <linux/mfd/wm8350/pmic.h>
31 #include <linux/mfd/wm8350/rtc.h>
32 #include <linux/mfd/wm8350/supply.h>
33 #include <linux/mfd/wm8350/wdt.h>
34
35 #define WM8350_UNLOCK_KEY 0x0013
36 #define WM8350_LOCK_KEY 0x0000
37
38 #define WM8350_CLOCK_CONTROL_1 0x28
39 #define WM8350_AIF_TEST 0x74
40
41 /* debug */
42 #define WM8350_BUS_DEBUG 0
43 #if WM8350_BUS_DEBUG
44 #define dump(regs, src) do { \
45 int i_; \
46 u16 *src_ = src; \
47 printk(KERN_DEBUG); \
48 for (i_ = 0; i_ < regs; i_++) \
49 printk(" 0x%4.4x", *src_++); \
50 printk("\n"); \
51 } while (0);
52 #else
53 #define dump(bytes, src)
54 #endif
55
56 #define WM8350_LOCK_DEBUG 0
57 #if WM8350_LOCK_DEBUG
58 #define ldbg(format, arg...) printk(format, ## arg)
59 #else
60 #define ldbg(format, arg...)
61 #endif
62
63 /*
64 * WM8350 Device IO
65 */
66 static DEFINE_MUTEX(io_mutex);
67 static DEFINE_MUTEX(reg_lock_mutex);
68
69 /* Perform a physical read from the device.
70 */
71 static int wm8350_phys_read(struct wm8350 *wm8350, u8 reg, int num_regs,
72 u16 *dest)
73 {
74 int i, ret;
75 int bytes = num_regs * 2;
76
77 dev_dbg(wm8350->dev, "volatile read\n");
78 ret = regmap_raw_read(wm8350->regmap, reg, dest, bytes);
79
80 for (i = reg; i < reg + num_regs; i++) {
81 /* Cache is CPU endian */
82 dest[i - reg] = be16_to_cpu(dest[i - reg]);
83
84 /* Mask out non-readable bits */
85 dest[i - reg] &= wm8350_reg_io_map[i].readable;
86 }
87
88 dump(num_regs, dest);
89
90 return ret;
91 }
92
93 static int wm8350_read(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *dest)
94 {
95 int i;
96 int end = reg + num_regs;
97 int ret = 0;
98 int bytes = num_regs * 2;
99
100 if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) {
101 dev_err(wm8350->dev, "invalid reg %x\n",
102 reg + num_regs - 1);
103 return -EINVAL;
104 }
105
106 dev_dbg(wm8350->dev,
107 "%s R%d(0x%2.2x) %d regs\n", __func__, reg, reg, num_regs);
108
109 #if WM8350_BUS_DEBUG
110 /* we can _safely_ read any register, but warn if read not supported */
111 for (i = reg; i < end; i++) {
112 if (!wm8350_reg_io_map[i].readable)
113 dev_warn(wm8350->dev,
114 "reg R%d is not readable\n", i);
115 }
116 #endif
117
118 /* if any volatile registers are required, then read back all */
119 for (i = reg; i < end; i++)
120 if (wm8350_reg_io_map[i].vol)
121 return wm8350_phys_read(wm8350, reg, num_regs, dest);
122
123 /* no volatiles, then cache is good */
124 dev_dbg(wm8350->dev, "cache read\n");
125 memcpy(dest, &wm8350->reg_cache[reg], bytes);
126 dump(num_regs, dest);
127 return ret;
128 }
129
130 static inline int is_reg_locked(struct wm8350 *wm8350, u8 reg)
131 {
132 if (reg == WM8350_SECURITY ||
133 wm8350->reg_cache[WM8350_SECURITY] == WM8350_UNLOCK_KEY)
134 return 0;
135
136 if ((reg >= WM8350_GPIO_FUNCTION_SELECT_1 &&
137 reg <= WM8350_GPIO_FUNCTION_SELECT_4) ||
138 (reg >= WM8350_BATTERY_CHARGER_CONTROL_1 &&
139 reg <= WM8350_BATTERY_CHARGER_CONTROL_3))
140 return 1;
141 return 0;
142 }
143
144 static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src)
145 {
146 int i;
147 int end = reg + num_regs;
148 int bytes = num_regs * 2;
149
150 if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) {
151 dev_err(wm8350->dev, "invalid reg %x\n",
152 reg + num_regs - 1);
153 return -EINVAL;
154 }
155
156 /* it's generally not a good idea to write to RO or locked registers */
157 for (i = reg; i < end; i++) {
158 if (!wm8350_reg_io_map[i].writable) {
159 dev_err(wm8350->dev,
160 "attempted write to read only reg R%d\n", i);
161 return -EINVAL;
162 }
163
164 if (is_reg_locked(wm8350, i)) {
165 dev_err(wm8350->dev,
166 "attempted write to locked reg R%d\n", i);
167 return -EINVAL;
168 }
169
170 src[i - reg] &= wm8350_reg_io_map[i].writable;
171
172 wm8350->reg_cache[i] =
173 (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable)
174 | src[i - reg];
175
176 src[i - reg] = cpu_to_be16(src[i - reg]);
177 }
178
179 /* Actually write it out */
180 return regmap_raw_write(wm8350->regmap, reg, src, bytes);
181 }
182
183 /*
184 * Safe read, modify, write methods
185 */
186 int wm8350_clear_bits(struct wm8350 *wm8350, u16 reg, u16 mask)
187 {
188 u16 data;
189 int err;
190
191 mutex_lock(&io_mutex);
192 err = wm8350_read(wm8350, reg, 1, &data);
193 if (err) {
194 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
195 goto out;
196 }
197
198 data &= ~mask;
199 err = wm8350_write(wm8350, reg, 1, &data);
200 if (err)
201 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
202 out:
203 mutex_unlock(&io_mutex);
204 return err;
205 }
206 EXPORT_SYMBOL_GPL(wm8350_clear_bits);
207
208 int wm8350_set_bits(struct wm8350 *wm8350, u16 reg, u16 mask)
209 {
210 u16 data;
211 int err;
212
213 mutex_lock(&io_mutex);
214 err = wm8350_read(wm8350, reg, 1, &data);
215 if (err) {
216 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
217 goto out;
218 }
219
220 data |= mask;
221 err = wm8350_write(wm8350, reg, 1, &data);
222 if (err)
223 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
224 out:
225 mutex_unlock(&io_mutex);
226 return err;
227 }
228 EXPORT_SYMBOL_GPL(wm8350_set_bits);
229
230 u16 wm8350_reg_read(struct wm8350 *wm8350, int reg)
231 {
232 u16 data;
233 int err;
234
235 mutex_lock(&io_mutex);
236 err = wm8350_read(wm8350, reg, 1, &data);
237 if (err)
238 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
239
240 mutex_unlock(&io_mutex);
241 return data;
242 }
243 EXPORT_SYMBOL_GPL(wm8350_reg_read);
244
245 int wm8350_reg_write(struct wm8350 *wm8350, int reg, u16 val)
246 {
247 int ret;
248 u16 data = val;
249
250 mutex_lock(&io_mutex);
251 ret = wm8350_write(wm8350, reg, 1, &data);
252 if (ret)
253 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
254 mutex_unlock(&io_mutex);
255 return ret;
256 }
257 EXPORT_SYMBOL_GPL(wm8350_reg_write);
258
259 int wm8350_block_read(struct wm8350 *wm8350, int start_reg, int regs,
260 u16 *dest)
261 {
262 int err = 0;
263
264 mutex_lock(&io_mutex);
265 err = wm8350_read(wm8350, start_reg, regs, dest);
266 if (err)
267 dev_err(wm8350->dev, "block read starting from R%d failed\n",
268 start_reg);
269 mutex_unlock(&io_mutex);
270 return err;
271 }
272 EXPORT_SYMBOL_GPL(wm8350_block_read);
273
274 int wm8350_block_write(struct wm8350 *wm8350, int start_reg, int regs,
275 u16 *src)
276 {
277 int ret = 0;
278
279 mutex_lock(&io_mutex);
280 ret = wm8350_write(wm8350, start_reg, regs, src);
281 if (ret)
282 dev_err(wm8350->dev, "block write starting at R%d failed\n",
283 start_reg);
284 mutex_unlock(&io_mutex);
285 return ret;
286 }
287 EXPORT_SYMBOL_GPL(wm8350_block_write);
288
289 /**
290 * wm8350_reg_lock()
291 *
292 * The WM8350 has a hardware lock which can be used to prevent writes to
293 * some registers (generally those which can cause particularly serious
294 * problems if misused). This function enables that lock.
295 */
296 int wm8350_reg_lock(struct wm8350 *wm8350)
297 {
298 u16 key = WM8350_LOCK_KEY;
299 int ret;
300
301 ldbg(__func__);
302 mutex_lock(&io_mutex);
303 ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key);
304 if (ret)
305 dev_err(wm8350->dev, "lock failed\n");
306 mutex_unlock(&io_mutex);
307 return ret;
308 }
309 EXPORT_SYMBOL_GPL(wm8350_reg_lock);
310
311 /**
312 * wm8350_reg_unlock()
313 *
314 * The WM8350 has a hardware lock which can be used to prevent writes to
315 * some registers (generally those which can cause particularly serious
316 * problems if misused). This function disables that lock so updates
317 * can be performed. For maximum safety this should be done only when
318 * required.
319 */
320 int wm8350_reg_unlock(struct wm8350 *wm8350)
321 {
322 u16 key = WM8350_UNLOCK_KEY;
323 int ret;
324
325 ldbg(__func__);
326 mutex_lock(&io_mutex);
327 ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key);
328 if (ret)
329 dev_err(wm8350->dev, "unlock failed\n");
330 mutex_unlock(&io_mutex);
331 return ret;
332 }
333 EXPORT_SYMBOL_GPL(wm8350_reg_unlock);
334
335 int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref)
336 {
337 u16 reg, result = 0;
338
339 if (channel < WM8350_AUXADC_AUX1 || channel > WM8350_AUXADC_TEMP)
340 return -EINVAL;
341 if (channel >= WM8350_AUXADC_USB && channel <= WM8350_AUXADC_TEMP
342 && (scale != 0 || vref != 0))
343 return -EINVAL;
344
345 mutex_lock(&wm8350->auxadc_mutex);
346
347 /* Turn on the ADC */
348 reg = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5);
349 wm8350_reg_write(wm8350, WM8350_POWER_MGMT_5, reg | WM8350_AUXADC_ENA);
350
351 if (scale || vref) {
352 reg = scale << 13;
353 reg |= vref << 12;
354 wm8350_reg_write(wm8350, WM8350_AUX1_READBACK + channel, reg);
355 }
356
357 reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
358 reg |= 1 << channel | WM8350_AUXADC_POLL;
359 wm8350_reg_write(wm8350, WM8350_DIGITISER_CONTROL_1, reg);
360
361 /* If a late IRQ left the completion signalled then consume
362 * the completion. */
363 try_wait_for_completion(&wm8350->auxadc_done);
364
365 /* We ignore the result of the completion and just check for a
366 * conversion result, allowing us to soldier on if the IRQ
367 * infrastructure is not set up for the chip. */
368 wait_for_completion_timeout(&wm8350->auxadc_done, msecs_to_jiffies(5));
369
370 reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
371 if (reg & WM8350_AUXADC_POLL)
372 dev_err(wm8350->dev, "adc chn %d read timeout\n", channel);
373 else
374 result = wm8350_reg_read(wm8350,
375 WM8350_AUX1_READBACK + channel);
376
377 /* Turn off the ADC */
378 reg = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5);
379 wm8350_reg_write(wm8350, WM8350_POWER_MGMT_5,
380 reg & ~WM8350_AUXADC_ENA);
381
382 mutex_unlock(&wm8350->auxadc_mutex);
383
384 return result & WM8350_AUXADC_DATA1_MASK;
385 }
386 EXPORT_SYMBOL_GPL(wm8350_read_auxadc);
387
388 static irqreturn_t wm8350_auxadc_irq(int irq, void *irq_data)
389 {
390 struct wm8350 *wm8350 = irq_data;
391
392 complete(&wm8350->auxadc_done);
393
394 return IRQ_HANDLED;
395 }
396
397 /*
398 * Cache is always host endian.
399 */
400 static int wm8350_create_cache(struct wm8350 *wm8350, int type, int mode)
401 {
402 int i, ret = 0;
403 u16 value;
404 const u16 *reg_map;
405
406 switch (type) {
407 case 0:
408 switch (mode) {
409 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_0
410 case 0:
411 reg_map = wm8350_mode0_defaults;
412 break;
413 #endif
414 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_1
415 case 1:
416 reg_map = wm8350_mode1_defaults;
417 break;
418 #endif
419 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_2
420 case 2:
421 reg_map = wm8350_mode2_defaults;
422 break;
423 #endif
424 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_3
425 case 3:
426 reg_map = wm8350_mode3_defaults;
427 break;
428 #endif
429 default:
430 dev_err(wm8350->dev,
431 "WM8350 configuration mode %d not supported\n",
432 mode);
433 return -EINVAL;
434 }
435 break;
436
437 case 1:
438 switch (mode) {
439 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_0
440 case 0:
441 reg_map = wm8351_mode0_defaults;
442 break;
443 #endif
444 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_1
445 case 1:
446 reg_map = wm8351_mode1_defaults;
447 break;
448 #endif
449 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_2
450 case 2:
451 reg_map = wm8351_mode2_defaults;
452 break;
453 #endif
454 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_3
455 case 3:
456 reg_map = wm8351_mode3_defaults;
457 break;
458 #endif
459 default:
460 dev_err(wm8350->dev,
461 "WM8351 configuration mode %d not supported\n",
462 mode);
463 return -EINVAL;
464 }
465 break;
466
467 case 2:
468 switch (mode) {
469 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_0
470 case 0:
471 reg_map = wm8352_mode0_defaults;
472 break;
473 #endif
474 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_1
475 case 1:
476 reg_map = wm8352_mode1_defaults;
477 break;
478 #endif
479 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_2
480 case 2:
481 reg_map = wm8352_mode2_defaults;
482 break;
483 #endif
484 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_3
485 case 3:
486 reg_map = wm8352_mode3_defaults;
487 break;
488 #endif
489 default:
490 dev_err(wm8350->dev,
491 "WM8352 configuration mode %d not supported\n",
492 mode);
493 return -EINVAL;
494 }
495 break;
496
497 default:
498 dev_err(wm8350->dev,
499 "WM835x configuration mode %d not supported\n",
500 mode);
501 return -EINVAL;
502 }
503
504 wm8350->reg_cache =
505 kmalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL);
506 if (wm8350->reg_cache == NULL)
507 return -ENOMEM;
508
509 /* Read the initial cache state back from the device - this is
510 * a PMIC so the device many not be in a virgin state and we
511 * can't rely on the silicon values.
512 */
513 ret = regmap_raw_read(wm8350->regmap, 0, wm8350->reg_cache,
514 sizeof(u16) * (WM8350_MAX_REGISTER + 1));
515 if (ret < 0) {
516 dev_err(wm8350->dev,
517 "failed to read initial cache values\n");
518 goto out;
519 }
520
521 /* Mask out uncacheable/unreadable bits and the audio. */
522 for (i = 0; i < WM8350_MAX_REGISTER; i++) {
523 if (wm8350_reg_io_map[i].readable &&
524 (i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) {
525 value = be16_to_cpu(wm8350->reg_cache[i]);
526 value &= wm8350_reg_io_map[i].readable;
527 wm8350->reg_cache[i] = value;
528 } else
529 wm8350->reg_cache[i] = reg_map[i];
530 }
531
532 out:
533 kfree(wm8350->reg_cache);
534 return ret;
535 }
536
537 /*
538 * Register a client device. This is non-fatal since there is no need to
539 * fail the entire device init due to a single platform device failing.
540 */
541 static void wm8350_client_dev_register(struct wm8350 *wm8350,
542 const char *name,
543 struct platform_device **pdev)
544 {
545 int ret;
546
547 *pdev = platform_device_alloc(name, -1);
548 if (*pdev == NULL) {
549 dev_err(wm8350->dev, "Failed to allocate %s\n", name);
550 return;
551 }
552
553 (*pdev)->dev.parent = wm8350->dev;
554 platform_set_drvdata(*pdev, wm8350);
555 ret = platform_device_add(*pdev);
556 if (ret != 0) {
557 dev_err(wm8350->dev, "Failed to register %s: %d\n", name, ret);
558 platform_device_put(*pdev);
559 *pdev = NULL;
560 }
561 }
562
563 int wm8350_device_init(struct wm8350 *wm8350, int irq,
564 struct wm8350_platform_data *pdata)
565 {
566 int ret;
567 unsigned int id1, id2, mask_rev;
568 unsigned int cust_id, mode, chip_rev;
569
570 dev_set_drvdata(wm8350->dev, wm8350);
571
572 /* get WM8350 revision and config mode */
573 ret = regmap_read(wm8350->regmap, WM8350_RESET_ID, &id1);
574 if (ret != 0) {
575 dev_err(wm8350->dev, "Failed to read ID: %d\n", ret);
576 goto err;
577 }
578
579 ret = regmap_read(wm8350->regmap, WM8350_ID, &id2);
580 if (ret != 0) {
581 dev_err(wm8350->dev, "Failed to read ID: %d\n", ret);
582 goto err;
583 }
584
585 ret = regmap_read(wm8350->regmap, WM8350_REVISION, &mask_rev);
586 if (ret != 0) {
587 dev_err(wm8350->dev, "Failed to read revision: %d\n", ret);
588 goto err;
589 }
590
591 if (id1 != 0x6143) {
592 dev_err(wm8350->dev,
593 "Device with ID %x is not a WM8350\n", id1);
594 ret = -ENODEV;
595 goto err;
596 }
597
598 mode = id2 & WM8350_CONF_STS_MASK >> 10;
599 cust_id = id2 & WM8350_CUST_ID_MASK;
600 chip_rev = (id2 & WM8350_CHIP_REV_MASK) >> 12;
601 dev_info(wm8350->dev,
602 "CONF_STS %d, CUST_ID %d, MASK_REV %d, CHIP_REV %d\n",
603 mode, cust_id, mask_rev, chip_rev);
604
605 if (cust_id != 0) {
606 dev_err(wm8350->dev, "Unsupported CUST_ID\n");
607 ret = -ENODEV;
608 goto err;
609 }
610
611 switch (mask_rev) {
612 case 0:
613 wm8350->pmic.max_dcdc = WM8350_DCDC_6;
614 wm8350->pmic.max_isink = WM8350_ISINK_B;
615
616 switch (chip_rev) {
617 case WM8350_REV_E:
618 dev_info(wm8350->dev, "WM8350 Rev E\n");
619 break;
620 case WM8350_REV_F:
621 dev_info(wm8350->dev, "WM8350 Rev F\n");
622 break;
623 case WM8350_REV_G:
624 dev_info(wm8350->dev, "WM8350 Rev G\n");
625 wm8350->power.rev_g_coeff = 1;
626 break;
627 case WM8350_REV_H:
628 dev_info(wm8350->dev, "WM8350 Rev H\n");
629 wm8350->power.rev_g_coeff = 1;
630 break;
631 default:
632 /* For safety we refuse to run on unknown hardware */
633 dev_err(wm8350->dev, "Unknown WM8350 CHIP_REV\n");
634 ret = -ENODEV;
635 goto err;
636 }
637 break;
638
639 case 1:
640 wm8350->pmic.max_dcdc = WM8350_DCDC_4;
641 wm8350->pmic.max_isink = WM8350_ISINK_A;
642
643 switch (chip_rev) {
644 case 0:
645 dev_info(wm8350->dev, "WM8351 Rev A\n");
646 wm8350->power.rev_g_coeff = 1;
647 break;
648
649 case 1:
650 dev_info(wm8350->dev, "WM8351 Rev B\n");
651 wm8350->power.rev_g_coeff = 1;
652 break;
653
654 default:
655 dev_err(wm8350->dev, "Unknown WM8351 CHIP_REV\n");
656 ret = -ENODEV;
657 goto err;
658 }
659 break;
660
661 case 2:
662 wm8350->pmic.max_dcdc = WM8350_DCDC_6;
663 wm8350->pmic.max_isink = WM8350_ISINK_B;
664
665 switch (chip_rev) {
666 case 0:
667 dev_info(wm8350->dev, "WM8352 Rev A\n");
668 wm8350->power.rev_g_coeff = 1;
669 break;
670
671 default:
672 dev_err(wm8350->dev, "Unknown WM8352 CHIP_REV\n");
673 ret = -ENODEV;
674 goto err;
675 }
676 break;
677
678 default:
679 dev_err(wm8350->dev, "Unknown MASK_REV\n");
680 ret = -ENODEV;
681 goto err;
682 }
683
684 ret = wm8350_create_cache(wm8350, mask_rev, mode);
685 if (ret < 0) {
686 dev_err(wm8350->dev, "Failed to create register cache\n");
687 return ret;
688 }
689
690 mutex_init(&wm8350->auxadc_mutex);
691 init_completion(&wm8350->auxadc_done);
692
693 ret = wm8350_irq_init(wm8350, irq, pdata);
694 if (ret < 0)
695 goto err_free;
696
697 if (wm8350->irq_base) {
698 ret = request_threaded_irq(wm8350->irq_base +
699 WM8350_IRQ_AUXADC_DATARDY,
700 NULL, wm8350_auxadc_irq, 0,
701 "auxadc", wm8350);
702 if (ret < 0)
703 dev_warn(wm8350->dev,
704 "Failed to request AUXADC IRQ: %d\n", ret);
705 }
706
707 if (pdata && pdata->init) {
708 ret = pdata->init(wm8350);
709 if (ret != 0) {
710 dev_err(wm8350->dev, "Platform init() failed: %d\n",
711 ret);
712 goto err_irq;
713 }
714 }
715
716 wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0x0);
717
718 wm8350_client_dev_register(wm8350, "wm8350-codec",
719 &(wm8350->codec.pdev));
720 wm8350_client_dev_register(wm8350, "wm8350-gpio",
721 &(wm8350->gpio.pdev));
722 wm8350_client_dev_register(wm8350, "wm8350-hwmon",
723 &(wm8350->hwmon.pdev));
724 wm8350_client_dev_register(wm8350, "wm8350-power",
725 &(wm8350->power.pdev));
726 wm8350_client_dev_register(wm8350, "wm8350-rtc", &(wm8350->rtc.pdev));
727 wm8350_client_dev_register(wm8350, "wm8350-wdt", &(wm8350->wdt.pdev));
728
729 return 0;
730
731 err_irq:
732 wm8350_irq_exit(wm8350);
733 err_free:
734 kfree(wm8350->reg_cache);
735 err:
736 return ret;
737 }
738 EXPORT_SYMBOL_GPL(wm8350_device_init);
739
740 void wm8350_device_exit(struct wm8350 *wm8350)
741 {
742 int i;
743
744 for (i = 0; i < ARRAY_SIZE(wm8350->pmic.led); i++)
745 platform_device_unregister(wm8350->pmic.led[i].pdev);
746
747 for (i = 0; i < ARRAY_SIZE(wm8350->pmic.pdev); i++)
748 platform_device_unregister(wm8350->pmic.pdev[i]);
749
750 platform_device_unregister(wm8350->wdt.pdev);
751 platform_device_unregister(wm8350->rtc.pdev);
752 platform_device_unregister(wm8350->power.pdev);
753 platform_device_unregister(wm8350->hwmon.pdev);
754 platform_device_unregister(wm8350->gpio.pdev);
755 platform_device_unregister(wm8350->codec.pdev);
756
757 if (wm8350->irq_base)
758 free_irq(wm8350->irq_base + WM8350_IRQ_AUXADC_DATARDY, wm8350);
759
760 wm8350_irq_exit(wm8350);
761
762 kfree(wm8350->reg_cache);
763 }
764 EXPORT_SYMBOL_GPL(wm8350_device_exit);
765
766 MODULE_DESCRIPTION("WM8350 AudioPlus PMIC core driver");
767 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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