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update the comment in kthread_stop()
[linux-2.6/mini2440.git] / drivers / mfd / wm8350-core.c
blobfe24079387c54a66fa0db5a558717c6251a2cb38
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/bug.h>
19 #include <linux/device.h>
20 #include <linux/delay.h>
21 #include <linux/interrupt.h>
22 #include <linux/workqueue.h>
23
24 #include <linux/mfd/wm8350/core.h>
25 #include <linux/mfd/wm8350/audio.h>
26 #include <linux/mfd/wm8350/comparator.h>
27 #include <linux/mfd/wm8350/gpio.h>
28 #include <linux/mfd/wm8350/pmic.h>
29 #include <linux/mfd/wm8350/rtc.h>
30 #include <linux/mfd/wm8350/supply.h>
31 #include <linux/mfd/wm8350/wdt.h>
32
33 #define WM8350_UNLOCK_KEY 0x0013
34 #define WM8350_LOCK_KEY 0x0000
35
36 #define WM8350_CLOCK_CONTROL_1 0x28
37 #define WM8350_AIF_TEST 0x74
38
39 /* debug */
40 #define WM8350_BUS_DEBUG 0
41 #if WM8350_BUS_DEBUG
42 #define dump(regs, src) do { \
43 int i_; \
44 u16 *src_ = src; \
45 printk(KERN_DEBUG); \
46 for (i_ = 0; i_ < regs; i_++) \
47 printk(" 0x%4.4x", *src_++); \
48 printk("\n"); \
49 } while (0);
50 #else
51 #define dump(bytes, src)
52 #endif
53
54 #define WM8350_LOCK_DEBUG 0
55 #if WM8350_LOCK_DEBUG
56 #define ldbg(format, arg...) printk(format, ## arg)
57 #else
58 #define ldbg(format, arg...)
59 #endif
60
61 /*
62 * WM8350 Device IO
63 */
64 static DEFINE_MUTEX(io_mutex);
65 static DEFINE_MUTEX(reg_lock_mutex);
66
67 /* Perform a physical read from the device.
68 */
69 static int wm8350_phys_read(struct wm8350 *wm8350, u8 reg, int num_regs,
70 u16 *dest)
71 {
72 int i, ret;
73 int bytes = num_regs * 2;
74
75 dev_dbg(wm8350->dev, "volatile read\n");
76 ret = wm8350->read_dev(wm8350, reg, bytes, (char *)dest);
77
78 for (i = reg; i < reg + num_regs; i++) {
79 /* Cache is CPU endian */
80 dest[i - reg] = be16_to_cpu(dest[i - reg]);
81
82 /* Mask out non-readable bits */
83 dest[i - reg] &= wm8350_reg_io_map[i].readable;
84 }
85
86 dump(num_regs, dest);
87
88 return ret;
89 }
90
91 static int wm8350_read(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *dest)
92 {
93 int i;
94 int end = reg + num_regs;
95 int ret = 0;
96 int bytes = num_regs * 2;
97
98 if (wm8350->read_dev == NULL)
99 return -ENODEV;
100
101 if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) {
102 dev_err(wm8350->dev, "invalid reg %x\n",
103 reg + num_regs - 1);
104 return -EINVAL;
105 }
106
107 dev_dbg(wm8350->dev,
108 "%s R%d(0x%2.2x) %d regs\n", __func__, reg, reg, num_regs);
109
110 #if WM8350_BUS_DEBUG
111 /* we can _safely_ read any register, but warn if read not supported */
112 for (i = reg; i < end; i++) {
113 if (!wm8350_reg_io_map[i].readable)
114 dev_warn(wm8350->dev,
115 "reg R%d is not readable\n", i);
116 }
117 #endif
118
119 /* if any volatile registers are required, then read back all */
120 for (i = reg; i < end; i++)
121 if (wm8350_reg_io_map[i].vol)
122 return wm8350_phys_read(wm8350, reg, num_regs, dest);
123
124 /* no volatiles, then cache is good */
125 dev_dbg(wm8350->dev, "cache read\n");
126 memcpy(dest, &wm8350->reg_cache[reg], bytes);
127 dump(num_regs, dest);
128 return ret;
129 }
130
131 static inline int is_reg_locked(struct wm8350 *wm8350, u8 reg)
132 {
133 if (reg == WM8350_SECURITY ||
134 wm8350->reg_cache[WM8350_SECURITY] == WM8350_UNLOCK_KEY)
135 return 0;
136
137 if ((reg == WM8350_GPIO_CONFIGURATION_I_O) ||
138 (reg >= WM8350_GPIO_FUNCTION_SELECT_1 &&
139 reg <= WM8350_GPIO_FUNCTION_SELECT_4) ||
140 (reg >= WM8350_BATTERY_CHARGER_CONTROL_1 &&
141 reg <= WM8350_BATTERY_CHARGER_CONTROL_3))
142 return 1;
143 return 0;
144 }
145
146 static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src)
147 {
148 int i;
149 int end = reg + num_regs;
150 int bytes = num_regs * 2;
151
152 if (wm8350->write_dev == NULL)
153 return -ENODEV;
154
155 if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) {
156 dev_err(wm8350->dev, "invalid reg %x\n",
157 reg + num_regs - 1);
158 return -EINVAL;
159 }
160
161 /* it's generally not a good idea to write to RO or locked registers */
162 for (i = reg; i < end; i++) {
163 if (!wm8350_reg_io_map[i].writable) {
164 dev_err(wm8350->dev,
165 "attempted write to read only reg R%d\n", i);
166 return -EINVAL;
167 }
168
169 if (is_reg_locked(wm8350, i)) {
170 dev_err(wm8350->dev,
171 "attempted write to locked reg R%d\n", i);
172 return -EINVAL;
173 }
174
175 src[i - reg] &= wm8350_reg_io_map[i].writable;
176
177 wm8350->reg_cache[i] =
178 (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable)
179 | src[i - reg];
180
181 src[i - reg] = cpu_to_be16(src[i - reg]);
182 }
183
184 /* Actually write it out */
185 return wm8350->write_dev(wm8350, reg, bytes, (char *)src);
186 }
187
188 /*
189 * Safe read, modify, write methods
190 */
191 int wm8350_clear_bits(struct wm8350 *wm8350, u16 reg, u16 mask)
192 {
193 u16 data;
194 int err;
195
196 mutex_lock(&io_mutex);
197 err = wm8350_read(wm8350, reg, 1, &data);
198 if (err) {
199 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
200 goto out;
201 }
202
203 data &= ~mask;
204 err = wm8350_write(wm8350, reg, 1, &data);
205 if (err)
206 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
207 out:
208 mutex_unlock(&io_mutex);
209 return err;
210 }
211 EXPORT_SYMBOL_GPL(wm8350_clear_bits);
212
213 int wm8350_set_bits(struct wm8350 *wm8350, u16 reg, u16 mask)
214 {
215 u16 data;
216 int err;
217
218 mutex_lock(&io_mutex);
219 err = wm8350_read(wm8350, reg, 1, &data);
220 if (err) {
221 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
222 goto out;
223 }
224
225 data |= mask;
226 err = wm8350_write(wm8350, reg, 1, &data);
227 if (err)
228 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
229 out:
230 mutex_unlock(&io_mutex);
231 return err;
232 }
233 EXPORT_SYMBOL_GPL(wm8350_set_bits);
234
235 u16 wm8350_reg_read(struct wm8350 *wm8350, int reg)
236 {
237 u16 data;
238 int err;
239
240 mutex_lock(&io_mutex);
241 err = wm8350_read(wm8350, reg, 1, &data);
242 if (err)
243 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
244
245 mutex_unlock(&io_mutex);
246 return data;
247 }
248 EXPORT_SYMBOL_GPL(wm8350_reg_read);
249
250 int wm8350_reg_write(struct wm8350 *wm8350, int reg, u16 val)
251 {
252 int ret;
253 u16 data = val;
254
255 mutex_lock(&io_mutex);
256 ret = wm8350_write(wm8350, reg, 1, &data);
257 if (ret)
258 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
259 mutex_unlock(&io_mutex);
260 return ret;
261 }
262 EXPORT_SYMBOL_GPL(wm8350_reg_write);
263
264 int wm8350_block_read(struct wm8350 *wm8350, int start_reg, int regs,
265 u16 *dest)
266 {
267 int err = 0;
268
269 mutex_lock(&io_mutex);
270 err = wm8350_read(wm8350, start_reg, regs, dest);
271 if (err)
272 dev_err(wm8350->dev, "block read starting from R%d failed\n",
273 start_reg);
274 mutex_unlock(&io_mutex);
275 return err;
276 }
277 EXPORT_SYMBOL_GPL(wm8350_block_read);
278
279 int wm8350_block_write(struct wm8350 *wm8350, int start_reg, int regs,
280 u16 *src)
281 {
282 int ret = 0;
283
284 mutex_lock(&io_mutex);
285 ret = wm8350_write(wm8350, start_reg, regs, src);
286 if (ret)
287 dev_err(wm8350->dev, "block write starting at R%d failed\n",
288 start_reg);
289 mutex_unlock(&io_mutex);
290 return ret;
291 }
292 EXPORT_SYMBOL_GPL(wm8350_block_write);
293
294 /**
295 * wm8350_reg_lock()
296 *
297 * The WM8350 has a hardware lock which can be used to prevent writes to
298 * some registers (generally those which can cause particularly serious
299 * problems if misused). This function enables that lock.
300 */
301 int wm8350_reg_lock(struct wm8350 *wm8350)
302 {
303 u16 key = WM8350_LOCK_KEY;
304 int ret;
305
306 ldbg(__func__);
307 mutex_lock(&io_mutex);
308 ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key);
309 if (ret)
310 dev_err(wm8350->dev, "lock failed\n");
311 mutex_unlock(&io_mutex);
312 return ret;
313 }
314 EXPORT_SYMBOL_GPL(wm8350_reg_lock);
315
316 /**
317 * wm8350_reg_unlock()
318 *
319 * The WM8350 has a hardware lock which can be used to prevent writes to
320 * some registers (generally those which can cause particularly serious
321 * problems if misused). This function disables that lock so updates
322 * can be performed. For maximum safety this should be done only when
323 * required.
324 */
325 int wm8350_reg_unlock(struct wm8350 *wm8350)
326 {
327 u16 key = WM8350_UNLOCK_KEY;
328 int ret;
329
330 ldbg(__func__);
331 mutex_lock(&io_mutex);
332 ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key);
333 if (ret)
334 dev_err(wm8350->dev, "unlock failed\n");
335 mutex_unlock(&io_mutex);
336 return ret;
337 }
338 EXPORT_SYMBOL_GPL(wm8350_reg_unlock);
339
340 static void wm8350_irq_call_handler(struct wm8350 *wm8350, int irq)
341 {
342 mutex_lock(&wm8350->irq_mutex);
343
344 if (wm8350->irq[irq].handler)
345 wm8350->irq[irq].handler(wm8350, irq, wm8350->irq[irq].data);
346 else {
347 dev_err(wm8350->dev, "irq %d nobody cared. now masked.\n",
348 irq);
349 wm8350_mask_irq(wm8350, irq);
350 }
351
352 mutex_unlock(&wm8350->irq_mutex);
353 }
354
355 /*
356 * wm8350_irq_worker actually handles the interrupts. Since all
357 * interrupts are clear on read the IRQ line will be reasserted and
358 * the physical IRQ will be handled again if another interrupt is
359 * asserted while we run - in the normal course of events this is a
360 * rare occurrence so we save I2C/SPI reads.
361 */
362 static void wm8350_irq_worker(struct work_struct *work)
363 {
364 struct wm8350 *wm8350 = container_of(work, struct wm8350, irq_work);
365 u16 level_one, status1, status2, comp;
366
367 /* TODO: Use block reads to improve performance? */
368 level_one = wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS)
369 & ~wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK);
370 status1 = wm8350_reg_read(wm8350, WM8350_INT_STATUS_1)
371 & ~wm8350_reg_read(wm8350, WM8350_INT_STATUS_1_MASK);
372 status2 = wm8350_reg_read(wm8350, WM8350_INT_STATUS_2)
373 & ~wm8350_reg_read(wm8350, WM8350_INT_STATUS_2_MASK);
374 comp = wm8350_reg_read(wm8350, WM8350_COMPARATOR_INT_STATUS)
375 & ~wm8350_reg_read(wm8350, WM8350_COMPARATOR_INT_STATUS_MASK);
376
377 /* over current */
378 if (level_one & WM8350_OC_INT) {
379 u16 oc;
380
381 oc = wm8350_reg_read(wm8350, WM8350_OVER_CURRENT_INT_STATUS);
382 oc &= ~wm8350_reg_read(wm8350,
383 WM8350_OVER_CURRENT_INT_STATUS_MASK);
384
385 if (oc & WM8350_OC_LS_EINT) /* limit switch */
386 wm8350_irq_call_handler(wm8350, WM8350_IRQ_OC_LS);
387 }
388
389 /* under voltage */
390 if (level_one & WM8350_UV_INT) {
391 u16 uv;
392
393 uv = wm8350_reg_read(wm8350, WM8350_UNDER_VOLTAGE_INT_STATUS);
394 uv &= ~wm8350_reg_read(wm8350,
395 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK);
396
397 if (uv & WM8350_UV_DC1_EINT)
398 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC1);
399 if (uv & WM8350_UV_DC2_EINT)
400 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC2);
401 if (uv & WM8350_UV_DC3_EINT)
402 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC3);
403 if (uv & WM8350_UV_DC4_EINT)
404 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC4);
405 if (uv & WM8350_UV_DC5_EINT)
406 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC5);
407 if (uv & WM8350_UV_DC6_EINT)
408 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC6);
409 if (uv & WM8350_UV_LDO1_EINT)
410 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO1);
411 if (uv & WM8350_UV_LDO2_EINT)
412 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO2);
413 if (uv & WM8350_UV_LDO3_EINT)
414 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO3);
415 if (uv & WM8350_UV_LDO4_EINT)
416 wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO4);
417 }
418
419 /* charger, RTC */
420 if (status1) {
421 if (status1 & WM8350_CHG_BAT_HOT_EINT)
422 wm8350_irq_call_handler(wm8350,
423 WM8350_IRQ_CHG_BAT_HOT);
424 if (status1 & WM8350_CHG_BAT_COLD_EINT)
425 wm8350_irq_call_handler(wm8350,
426 WM8350_IRQ_CHG_BAT_COLD);
427 if (status1 & WM8350_CHG_BAT_FAIL_EINT)
428 wm8350_irq_call_handler(wm8350,
429 WM8350_IRQ_CHG_BAT_FAIL);
430 if (status1 & WM8350_CHG_TO_EINT)
431 wm8350_irq_call_handler(wm8350, WM8350_IRQ_CHG_TO);
432 if (status1 & WM8350_CHG_END_EINT)
433 wm8350_irq_call_handler(wm8350, WM8350_IRQ_CHG_END);
434 if (status1 & WM8350_CHG_START_EINT)
435 wm8350_irq_call_handler(wm8350, WM8350_IRQ_CHG_START);
436 if (status1 & WM8350_CHG_FAST_RDY_EINT)
437 wm8350_irq_call_handler(wm8350,
438 WM8350_IRQ_CHG_FAST_RDY);
439 if (status1 & WM8350_CHG_VBATT_LT_3P9_EINT)
440 wm8350_irq_call_handler(wm8350,
441 WM8350_IRQ_CHG_VBATT_LT_3P9);
442 if (status1 & WM8350_CHG_VBATT_LT_3P1_EINT)
443 wm8350_irq_call_handler(wm8350,
444 WM8350_IRQ_CHG_VBATT_LT_3P1);
445 if (status1 & WM8350_CHG_VBATT_LT_2P85_EINT)
446 wm8350_irq_call_handler(wm8350,
447 WM8350_IRQ_CHG_VBATT_LT_2P85);
448 if (status1 & WM8350_RTC_ALM_EINT)
449 wm8350_irq_call_handler(wm8350, WM8350_IRQ_RTC_ALM);
450 if (status1 & WM8350_RTC_SEC_EINT)
451 wm8350_irq_call_handler(wm8350, WM8350_IRQ_RTC_SEC);
452 if (status1 & WM8350_RTC_PER_EINT)
453 wm8350_irq_call_handler(wm8350, WM8350_IRQ_RTC_PER);
454 }
455
456 /* current sink, system, aux adc */
457 if (status2) {
458 if (status2 & WM8350_CS1_EINT)
459 wm8350_irq_call_handler(wm8350, WM8350_IRQ_CS1);
460 if (status2 & WM8350_CS2_EINT)
461 wm8350_irq_call_handler(wm8350, WM8350_IRQ_CS2);
462
463 if (status2 & WM8350_SYS_HYST_COMP_FAIL_EINT)
464 wm8350_irq_call_handler(wm8350,
465 WM8350_IRQ_SYS_HYST_COMP_FAIL);
466 if (status2 & WM8350_SYS_CHIP_GT115_EINT)
467 wm8350_irq_call_handler(wm8350,
468 WM8350_IRQ_SYS_CHIP_GT115);
469 if (status2 & WM8350_SYS_CHIP_GT140_EINT)
470 wm8350_irq_call_handler(wm8350,
471 WM8350_IRQ_SYS_CHIP_GT140);
472 if (status2 & WM8350_SYS_WDOG_TO_EINT)
473 wm8350_irq_call_handler(wm8350,
474 WM8350_IRQ_SYS_WDOG_TO);
475
476 if (status2 & WM8350_AUXADC_DATARDY_EINT)
477 wm8350_irq_call_handler(wm8350,
478 WM8350_IRQ_AUXADC_DATARDY);
479 if (status2 & WM8350_AUXADC_DCOMP4_EINT)
480 wm8350_irq_call_handler(wm8350,
481 WM8350_IRQ_AUXADC_DCOMP4);
482 if (status2 & WM8350_AUXADC_DCOMP3_EINT)
483 wm8350_irq_call_handler(wm8350,
484 WM8350_IRQ_AUXADC_DCOMP3);
485 if (status2 & WM8350_AUXADC_DCOMP2_EINT)
486 wm8350_irq_call_handler(wm8350,
487 WM8350_IRQ_AUXADC_DCOMP2);
488 if (status2 & WM8350_AUXADC_DCOMP1_EINT)
489 wm8350_irq_call_handler(wm8350,
490 WM8350_IRQ_AUXADC_DCOMP1);
491
492 if (status2 & WM8350_USB_LIMIT_EINT)
493 wm8350_irq_call_handler(wm8350, WM8350_IRQ_USB_LIMIT);
494 }
495
496 /* wake, codec, ext */
497 if (comp) {
498 if (comp & WM8350_WKUP_OFF_STATE_EINT)
499 wm8350_irq_call_handler(wm8350,
500 WM8350_IRQ_WKUP_OFF_STATE);
501 if (comp & WM8350_WKUP_HIB_STATE_EINT)
502 wm8350_irq_call_handler(wm8350,
503 WM8350_IRQ_WKUP_HIB_STATE);
504 if (comp & WM8350_WKUP_CONV_FAULT_EINT)
505 wm8350_irq_call_handler(wm8350,
506 WM8350_IRQ_WKUP_CONV_FAULT);
507 if (comp & WM8350_WKUP_WDOG_RST_EINT)
508 wm8350_irq_call_handler(wm8350,
509 WM8350_IRQ_WKUP_WDOG_RST);
510 if (comp & WM8350_WKUP_GP_PWR_ON_EINT)
511 wm8350_irq_call_handler(wm8350,
512 WM8350_IRQ_WKUP_GP_PWR_ON);
513 if (comp & WM8350_WKUP_ONKEY_EINT)
514 wm8350_irq_call_handler(wm8350, WM8350_IRQ_WKUP_ONKEY);
515 if (comp & WM8350_WKUP_GP_WAKEUP_EINT)
516 wm8350_irq_call_handler(wm8350,
517 WM8350_IRQ_WKUP_GP_WAKEUP);
518
519 if (comp & WM8350_CODEC_JCK_DET_L_EINT)
520 wm8350_irq_call_handler(wm8350,
521 WM8350_IRQ_CODEC_JCK_DET_L);
522 if (comp & WM8350_CODEC_JCK_DET_R_EINT)
523 wm8350_irq_call_handler(wm8350,
524 WM8350_IRQ_CODEC_JCK_DET_R);
525 if (comp & WM8350_CODEC_MICSCD_EINT)
526 wm8350_irq_call_handler(wm8350,
527 WM8350_IRQ_CODEC_MICSCD);
528 if (comp & WM8350_CODEC_MICD_EINT)
529 wm8350_irq_call_handler(wm8350, WM8350_IRQ_CODEC_MICD);
530
531 if (comp & WM8350_EXT_USB_FB_EINT)
532 wm8350_irq_call_handler(wm8350, WM8350_IRQ_EXT_USB_FB);
533 if (comp & WM8350_EXT_WALL_FB_EINT)
534 wm8350_irq_call_handler(wm8350,
535 WM8350_IRQ_EXT_WALL_FB);
536 if (comp & WM8350_EXT_BAT_FB_EINT)
537 wm8350_irq_call_handler(wm8350, WM8350_IRQ_EXT_BAT_FB);
538 }
539
540 if (level_one & WM8350_GP_INT) {
541 int i;
542 u16 gpio;
543
544 gpio = wm8350_reg_read(wm8350, WM8350_GPIO_INT_STATUS);
545 gpio &= ~wm8350_reg_read(wm8350,
546 WM8350_GPIO_INT_STATUS_MASK);
547
548 for (i = 0; i < 12; i++) {
549 if (gpio & (1 << i))
550 wm8350_irq_call_handler(wm8350,
551 WM8350_IRQ_GPIO(i));
552 }
553 }
554
555 enable_irq(wm8350->chip_irq);
556 }
557
558 static irqreturn_t wm8350_irq(int irq, void *data)
559 {
560 struct wm8350 *wm8350 = data;
561
562 disable_irq_nosync(irq);
563 schedule_work(&wm8350->irq_work);
564
565 return IRQ_HANDLED;
566 }
567
568 int wm8350_register_irq(struct wm8350 *wm8350, int irq,
569 void (*handler) (struct wm8350 *, int, void *),
570 void *data)
571 {
572 if (irq < 0 || irq > WM8350_NUM_IRQ || !handler)
573 return -EINVAL;
574
575 if (wm8350->irq[irq].handler)
576 return -EBUSY;
577
578 mutex_lock(&wm8350->irq_mutex);
579 wm8350->irq[irq].handler = handler;
580 wm8350->irq[irq].data = data;
581 mutex_unlock(&wm8350->irq_mutex);
582
583 return 0;
584 }
585 EXPORT_SYMBOL_GPL(wm8350_register_irq);
586
587 int wm8350_free_irq(struct wm8350 *wm8350, int irq)
588 {
589 if (irq < 0 || irq > WM8350_NUM_IRQ)
590 return -EINVAL;
591
592 mutex_lock(&wm8350->irq_mutex);
593 wm8350->irq[irq].handler = NULL;
594 mutex_unlock(&wm8350->irq_mutex);
595 return 0;
596 }
597 EXPORT_SYMBOL_GPL(wm8350_free_irq);
598
599 int wm8350_mask_irq(struct wm8350 *wm8350, int irq)
600 {
601 switch (irq) {
602 case WM8350_IRQ_CHG_BAT_HOT:
603 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
604 WM8350_IM_CHG_BAT_HOT_EINT);
605 case WM8350_IRQ_CHG_BAT_COLD:
606 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
607 WM8350_IM_CHG_BAT_COLD_EINT);
608 case WM8350_IRQ_CHG_BAT_FAIL:
609 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
610 WM8350_IM_CHG_BAT_FAIL_EINT);
611 case WM8350_IRQ_CHG_TO:
612 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
613 WM8350_IM_CHG_TO_EINT);
614 case WM8350_IRQ_CHG_END:
615 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
616 WM8350_IM_CHG_END_EINT);
617 case WM8350_IRQ_CHG_START:
618 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
619 WM8350_IM_CHG_START_EINT);
620 case WM8350_IRQ_CHG_FAST_RDY:
621 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
622 WM8350_IM_CHG_FAST_RDY_EINT);
623 case WM8350_IRQ_RTC_PER:
624 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
625 WM8350_IM_RTC_PER_EINT);
626 case WM8350_IRQ_RTC_SEC:
627 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
628 WM8350_IM_RTC_SEC_EINT);
629 case WM8350_IRQ_RTC_ALM:
630 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
631 WM8350_IM_RTC_ALM_EINT);
632 case WM8350_IRQ_CHG_VBATT_LT_3P9:
633 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
634 WM8350_IM_CHG_VBATT_LT_3P9_EINT);
635 case WM8350_IRQ_CHG_VBATT_LT_3P1:
636 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
637 WM8350_IM_CHG_VBATT_LT_3P1_EINT);
638 case WM8350_IRQ_CHG_VBATT_LT_2P85:
639 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
640 WM8350_IM_CHG_VBATT_LT_2P85_EINT);
641 case WM8350_IRQ_CS1:
642 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
643 WM8350_IM_CS1_EINT);
644 case WM8350_IRQ_CS2:
645 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
646 WM8350_IM_CS2_EINT);
647 case WM8350_IRQ_USB_LIMIT:
648 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
649 WM8350_IM_USB_LIMIT_EINT);
650 case WM8350_IRQ_AUXADC_DATARDY:
651 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
652 WM8350_IM_AUXADC_DATARDY_EINT);
653 case WM8350_IRQ_AUXADC_DCOMP4:
654 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
655 WM8350_IM_AUXADC_DCOMP4_EINT);
656 case WM8350_IRQ_AUXADC_DCOMP3:
657 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
658 WM8350_IM_AUXADC_DCOMP3_EINT);
659 case WM8350_IRQ_AUXADC_DCOMP2:
660 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
661 WM8350_IM_AUXADC_DCOMP2_EINT);
662 case WM8350_IRQ_AUXADC_DCOMP1:
663 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
664 WM8350_IM_AUXADC_DCOMP1_EINT);
665 case WM8350_IRQ_SYS_HYST_COMP_FAIL:
666 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
667 WM8350_IM_SYS_HYST_COMP_FAIL_EINT);
668 case WM8350_IRQ_SYS_CHIP_GT115:
669 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
670 WM8350_IM_SYS_CHIP_GT115_EINT);
671 case WM8350_IRQ_SYS_CHIP_GT140:
672 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
673 WM8350_IM_SYS_CHIP_GT140_EINT);
674 case WM8350_IRQ_SYS_WDOG_TO:
675 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
676 WM8350_IM_SYS_WDOG_TO_EINT);
677 case WM8350_IRQ_UV_LDO4:
678 return wm8350_set_bits(wm8350,
679 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
680 WM8350_IM_UV_LDO4_EINT);
681 case WM8350_IRQ_UV_LDO3:
682 return wm8350_set_bits(wm8350,
683 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
684 WM8350_IM_UV_LDO3_EINT);
685 case WM8350_IRQ_UV_LDO2:
686 return wm8350_set_bits(wm8350,
687 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
688 WM8350_IM_UV_LDO2_EINT);
689 case WM8350_IRQ_UV_LDO1:
690 return wm8350_set_bits(wm8350,
691 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
692 WM8350_IM_UV_LDO1_EINT);
693 case WM8350_IRQ_UV_DC6:
694 return wm8350_set_bits(wm8350,
695 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
696 WM8350_IM_UV_DC6_EINT);
697 case WM8350_IRQ_UV_DC5:
698 return wm8350_set_bits(wm8350,
699 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
700 WM8350_IM_UV_DC5_EINT);
701 case WM8350_IRQ_UV_DC4:
702 return wm8350_set_bits(wm8350,
703 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
704 WM8350_IM_UV_DC4_EINT);
705 case WM8350_IRQ_UV_DC3:
706 return wm8350_set_bits(wm8350,
707 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
708 WM8350_IM_UV_DC3_EINT);
709 case WM8350_IRQ_UV_DC2:
710 return wm8350_set_bits(wm8350,
711 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
712 WM8350_IM_UV_DC2_EINT);
713 case WM8350_IRQ_UV_DC1:
714 return wm8350_set_bits(wm8350,
715 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
716 WM8350_IM_UV_DC1_EINT);
717 case WM8350_IRQ_OC_LS:
718 return wm8350_set_bits(wm8350,
719 WM8350_OVER_CURRENT_INT_STATUS_MASK,
720 WM8350_IM_OC_LS_EINT);
721 case WM8350_IRQ_EXT_USB_FB:
722 return wm8350_set_bits(wm8350,
723 WM8350_COMPARATOR_INT_STATUS_MASK,
724 WM8350_IM_EXT_USB_FB_EINT);
725 case WM8350_IRQ_EXT_WALL_FB:
726 return wm8350_set_bits(wm8350,
727 WM8350_COMPARATOR_INT_STATUS_MASK,
728 WM8350_IM_EXT_WALL_FB_EINT);
729 case WM8350_IRQ_EXT_BAT_FB:
730 return wm8350_set_bits(wm8350,
731 WM8350_COMPARATOR_INT_STATUS_MASK,
732 WM8350_IM_EXT_BAT_FB_EINT);
733 case WM8350_IRQ_CODEC_JCK_DET_L:
734 return wm8350_set_bits(wm8350,
735 WM8350_COMPARATOR_INT_STATUS_MASK,
736 WM8350_IM_CODEC_JCK_DET_L_EINT);
737 case WM8350_IRQ_CODEC_JCK_DET_R:
738 return wm8350_set_bits(wm8350,
739 WM8350_COMPARATOR_INT_STATUS_MASK,
740 WM8350_IM_CODEC_JCK_DET_R_EINT);
741 case WM8350_IRQ_CODEC_MICSCD:
742 return wm8350_set_bits(wm8350,
743 WM8350_COMPARATOR_INT_STATUS_MASK,
744 WM8350_IM_CODEC_MICSCD_EINT);
745 case WM8350_IRQ_CODEC_MICD:
746 return wm8350_set_bits(wm8350,
747 WM8350_COMPARATOR_INT_STATUS_MASK,
748 WM8350_IM_CODEC_MICD_EINT);
749 case WM8350_IRQ_WKUP_OFF_STATE:
750 return wm8350_set_bits(wm8350,
751 WM8350_COMPARATOR_INT_STATUS_MASK,
752 WM8350_IM_WKUP_OFF_STATE_EINT);
753 case WM8350_IRQ_WKUP_HIB_STATE:
754 return wm8350_set_bits(wm8350,
755 WM8350_COMPARATOR_INT_STATUS_MASK,
756 WM8350_IM_WKUP_HIB_STATE_EINT);
757 case WM8350_IRQ_WKUP_CONV_FAULT:
758 return wm8350_set_bits(wm8350,
759 WM8350_COMPARATOR_INT_STATUS_MASK,
760 WM8350_IM_WKUP_CONV_FAULT_EINT);
761 case WM8350_IRQ_WKUP_WDOG_RST:
762 return wm8350_set_bits(wm8350,
763 WM8350_COMPARATOR_INT_STATUS_MASK,
764 WM8350_IM_WKUP_OFF_STATE_EINT);
765 case WM8350_IRQ_WKUP_GP_PWR_ON:
766 return wm8350_set_bits(wm8350,
767 WM8350_COMPARATOR_INT_STATUS_MASK,
768 WM8350_IM_WKUP_GP_PWR_ON_EINT);
769 case WM8350_IRQ_WKUP_ONKEY:
770 return wm8350_set_bits(wm8350,
771 WM8350_COMPARATOR_INT_STATUS_MASK,
772 WM8350_IM_WKUP_ONKEY_EINT);
773 case WM8350_IRQ_WKUP_GP_WAKEUP:
774 return wm8350_set_bits(wm8350,
775 WM8350_COMPARATOR_INT_STATUS_MASK,
776 WM8350_IM_WKUP_GP_WAKEUP_EINT);
777 case WM8350_IRQ_GPIO(0):
778 return wm8350_set_bits(wm8350,
779 WM8350_GPIO_INT_STATUS_MASK,
780 WM8350_IM_GP0_EINT);
781 case WM8350_IRQ_GPIO(1):
782 return wm8350_set_bits(wm8350,
783 WM8350_GPIO_INT_STATUS_MASK,
784 WM8350_IM_GP1_EINT);
785 case WM8350_IRQ_GPIO(2):
786 return wm8350_set_bits(wm8350,
787 WM8350_GPIO_INT_STATUS_MASK,
788 WM8350_IM_GP2_EINT);
789 case WM8350_IRQ_GPIO(3):
790 return wm8350_set_bits(wm8350,
791 WM8350_GPIO_INT_STATUS_MASK,
792 WM8350_IM_GP3_EINT);
793 case WM8350_IRQ_GPIO(4):
794 return wm8350_set_bits(wm8350,
795 WM8350_GPIO_INT_STATUS_MASK,
796 WM8350_IM_GP4_EINT);
797 case WM8350_IRQ_GPIO(5):
798 return wm8350_set_bits(wm8350,
799 WM8350_GPIO_INT_STATUS_MASK,
800 WM8350_IM_GP5_EINT);
801 case WM8350_IRQ_GPIO(6):
802 return wm8350_set_bits(wm8350,
803 WM8350_GPIO_INT_STATUS_MASK,
804 WM8350_IM_GP6_EINT);
805 case WM8350_IRQ_GPIO(7):
806 return wm8350_set_bits(wm8350,
807 WM8350_GPIO_INT_STATUS_MASK,
808 WM8350_IM_GP7_EINT);
809 case WM8350_IRQ_GPIO(8):
810 return wm8350_set_bits(wm8350,
811 WM8350_GPIO_INT_STATUS_MASK,
812 WM8350_IM_GP8_EINT);
813 case WM8350_IRQ_GPIO(9):
814 return wm8350_set_bits(wm8350,
815 WM8350_GPIO_INT_STATUS_MASK,
816 WM8350_IM_GP9_EINT);
817 case WM8350_IRQ_GPIO(10):
818 return wm8350_set_bits(wm8350,
819 WM8350_GPIO_INT_STATUS_MASK,
820 WM8350_IM_GP10_EINT);
821 case WM8350_IRQ_GPIO(11):
822 return wm8350_set_bits(wm8350,
823 WM8350_GPIO_INT_STATUS_MASK,
824 WM8350_IM_GP11_EINT);
825 case WM8350_IRQ_GPIO(12):
826 return wm8350_set_bits(wm8350,
827 WM8350_GPIO_INT_STATUS_MASK,
828 WM8350_IM_GP12_EINT);
829 default:
830 dev_warn(wm8350->dev, "Attempting to mask unknown IRQ %d\n",
831 irq);
832 return -EINVAL;
833 }
834 return 0;
835 }
836 EXPORT_SYMBOL_GPL(wm8350_mask_irq);
837
838 int wm8350_unmask_irq(struct wm8350 *wm8350, int irq)
839 {
840 switch (irq) {
841 case WM8350_IRQ_CHG_BAT_HOT:
842 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
843 WM8350_IM_CHG_BAT_HOT_EINT);
844 case WM8350_IRQ_CHG_BAT_COLD:
845 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
846 WM8350_IM_CHG_BAT_COLD_EINT);
847 case WM8350_IRQ_CHG_BAT_FAIL:
848 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
849 WM8350_IM_CHG_BAT_FAIL_EINT);
850 case WM8350_IRQ_CHG_TO:
851 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
852 WM8350_IM_CHG_TO_EINT);
853 case WM8350_IRQ_CHG_END:
854 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
855 WM8350_IM_CHG_END_EINT);
856 case WM8350_IRQ_CHG_START:
857 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
858 WM8350_IM_CHG_START_EINT);
859 case WM8350_IRQ_CHG_FAST_RDY:
860 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
861 WM8350_IM_CHG_FAST_RDY_EINT);
862 case WM8350_IRQ_RTC_PER:
863 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
864 WM8350_IM_RTC_PER_EINT);
865 case WM8350_IRQ_RTC_SEC:
866 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
867 WM8350_IM_RTC_SEC_EINT);
868 case WM8350_IRQ_RTC_ALM:
869 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
870 WM8350_IM_RTC_ALM_EINT);
871 case WM8350_IRQ_CHG_VBATT_LT_3P9:
872 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
873 WM8350_IM_CHG_VBATT_LT_3P9_EINT);
874 case WM8350_IRQ_CHG_VBATT_LT_3P1:
875 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
876 WM8350_IM_CHG_VBATT_LT_3P1_EINT);
877 case WM8350_IRQ_CHG_VBATT_LT_2P85:
878 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
879 WM8350_IM_CHG_VBATT_LT_2P85_EINT);
880 case WM8350_IRQ_CS1:
881 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
882 WM8350_IM_CS1_EINT);
883 case WM8350_IRQ_CS2:
884 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
885 WM8350_IM_CS2_EINT);
886 case WM8350_IRQ_USB_LIMIT:
887 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
888 WM8350_IM_USB_LIMIT_EINT);
889 case WM8350_IRQ_AUXADC_DATARDY:
890 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
891 WM8350_IM_AUXADC_DATARDY_EINT);
892 case WM8350_IRQ_AUXADC_DCOMP4:
893 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
894 WM8350_IM_AUXADC_DCOMP4_EINT);
895 case WM8350_IRQ_AUXADC_DCOMP3:
896 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
897 WM8350_IM_AUXADC_DCOMP3_EINT);
898 case WM8350_IRQ_AUXADC_DCOMP2:
899 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
900 WM8350_IM_AUXADC_DCOMP2_EINT);
901 case WM8350_IRQ_AUXADC_DCOMP1:
902 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
903 WM8350_IM_AUXADC_DCOMP1_EINT);
904 case WM8350_IRQ_SYS_HYST_COMP_FAIL:
905 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
906 WM8350_IM_SYS_HYST_COMP_FAIL_EINT);
907 case WM8350_IRQ_SYS_CHIP_GT115:
908 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
909 WM8350_IM_SYS_CHIP_GT115_EINT);
910 case WM8350_IRQ_SYS_CHIP_GT140:
911 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
912 WM8350_IM_SYS_CHIP_GT140_EINT);
913 case WM8350_IRQ_SYS_WDOG_TO:
914 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
915 WM8350_IM_SYS_WDOG_TO_EINT);
916 case WM8350_IRQ_UV_LDO4:
917 return wm8350_clear_bits(wm8350,
918 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
919 WM8350_IM_UV_LDO4_EINT);
920 case WM8350_IRQ_UV_LDO3:
921 return wm8350_clear_bits(wm8350,
922 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
923 WM8350_IM_UV_LDO3_EINT);
924 case WM8350_IRQ_UV_LDO2:
925 return wm8350_clear_bits(wm8350,
926 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
927 WM8350_IM_UV_LDO2_EINT);
928 case WM8350_IRQ_UV_LDO1:
929 return wm8350_clear_bits(wm8350,
930 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
931 WM8350_IM_UV_LDO1_EINT);
932 case WM8350_IRQ_UV_DC6:
933 return wm8350_clear_bits(wm8350,
934 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
935 WM8350_IM_UV_DC6_EINT);
936 case WM8350_IRQ_UV_DC5:
937 return wm8350_clear_bits(wm8350,
938 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
939 WM8350_IM_UV_DC5_EINT);
940 case WM8350_IRQ_UV_DC4:
941 return wm8350_clear_bits(wm8350,
942 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
943 WM8350_IM_UV_DC4_EINT);
944 case WM8350_IRQ_UV_DC3:
945 return wm8350_clear_bits(wm8350,
946 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
947 WM8350_IM_UV_DC3_EINT);
948 case WM8350_IRQ_UV_DC2:
949 return wm8350_clear_bits(wm8350,
950 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
951 WM8350_IM_UV_DC2_EINT);
952 case WM8350_IRQ_UV_DC1:
953 return wm8350_clear_bits(wm8350,
954 WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
955 WM8350_IM_UV_DC1_EINT);
956 case WM8350_IRQ_OC_LS:
957 return wm8350_clear_bits(wm8350,
958 WM8350_OVER_CURRENT_INT_STATUS_MASK,
959 WM8350_IM_OC_LS_EINT);
960 case WM8350_IRQ_EXT_USB_FB:
961 return wm8350_clear_bits(wm8350,
962 WM8350_COMPARATOR_INT_STATUS_MASK,
963 WM8350_IM_EXT_USB_FB_EINT);
964 case WM8350_IRQ_EXT_WALL_FB:
965 return wm8350_clear_bits(wm8350,
966 WM8350_COMPARATOR_INT_STATUS_MASK,
967 WM8350_IM_EXT_WALL_FB_EINT);
968 case WM8350_IRQ_EXT_BAT_FB:
969 return wm8350_clear_bits(wm8350,
970 WM8350_COMPARATOR_INT_STATUS_MASK,
971 WM8350_IM_EXT_BAT_FB_EINT);
972 case WM8350_IRQ_CODEC_JCK_DET_L:
973 return wm8350_clear_bits(wm8350,
974 WM8350_COMPARATOR_INT_STATUS_MASK,
975 WM8350_IM_CODEC_JCK_DET_L_EINT);
976 case WM8350_IRQ_CODEC_JCK_DET_R:
977 return wm8350_clear_bits(wm8350,
978 WM8350_COMPARATOR_INT_STATUS_MASK,
979 WM8350_IM_CODEC_JCK_DET_R_EINT);
980 case WM8350_IRQ_CODEC_MICSCD:
981 return wm8350_clear_bits(wm8350,
982 WM8350_COMPARATOR_INT_STATUS_MASK,
983 WM8350_IM_CODEC_MICSCD_EINT);
984 case WM8350_IRQ_CODEC_MICD:
985 return wm8350_clear_bits(wm8350,
986 WM8350_COMPARATOR_INT_STATUS_MASK,
987 WM8350_IM_CODEC_MICD_EINT);
988 case WM8350_IRQ_WKUP_OFF_STATE:
989 return wm8350_clear_bits(wm8350,
990 WM8350_COMPARATOR_INT_STATUS_MASK,
991 WM8350_IM_WKUP_OFF_STATE_EINT);
992 case WM8350_IRQ_WKUP_HIB_STATE:
993 return wm8350_clear_bits(wm8350,
994 WM8350_COMPARATOR_INT_STATUS_MASK,
995 WM8350_IM_WKUP_HIB_STATE_EINT);
996 case WM8350_IRQ_WKUP_CONV_FAULT:
997 return wm8350_clear_bits(wm8350,
998 WM8350_COMPARATOR_INT_STATUS_MASK,
999 WM8350_IM_WKUP_CONV_FAULT_EINT);
1000 case WM8350_IRQ_WKUP_WDOG_RST:
1001 return wm8350_clear_bits(wm8350,
1002 WM8350_COMPARATOR_INT_STATUS_MASK,
1003 WM8350_IM_WKUP_OFF_STATE_EINT);
1004 case WM8350_IRQ_WKUP_GP_PWR_ON:
1005 return wm8350_clear_bits(wm8350,
1006 WM8350_COMPARATOR_INT_STATUS_MASK,
1007 WM8350_IM_WKUP_GP_PWR_ON_EINT);
1008 case WM8350_IRQ_WKUP_ONKEY:
1009 return wm8350_clear_bits(wm8350,
1010 WM8350_COMPARATOR_INT_STATUS_MASK,
1011 WM8350_IM_WKUP_ONKEY_EINT);
1012 case WM8350_IRQ_WKUP_GP_WAKEUP:
1013 return wm8350_clear_bits(wm8350,
1014 WM8350_COMPARATOR_INT_STATUS_MASK,
1015 WM8350_IM_WKUP_GP_WAKEUP_EINT);
1016 case WM8350_IRQ_GPIO(0):
1017 return wm8350_clear_bits(wm8350,
1018 WM8350_GPIO_INT_STATUS_MASK,
1019 WM8350_IM_GP0_EINT);
1020 case WM8350_IRQ_GPIO(1):
1021 return wm8350_clear_bits(wm8350,
1022 WM8350_GPIO_INT_STATUS_MASK,
1023 WM8350_IM_GP1_EINT);
1024 case WM8350_IRQ_GPIO(2):
1025 return wm8350_clear_bits(wm8350,
1026 WM8350_GPIO_INT_STATUS_MASK,
1027 WM8350_IM_GP2_EINT);
1028 case WM8350_IRQ_GPIO(3):
1029 return wm8350_clear_bits(wm8350,
1030 WM8350_GPIO_INT_STATUS_MASK,
1031 WM8350_IM_GP3_EINT);
1032 case WM8350_IRQ_GPIO(4):
1033 return wm8350_clear_bits(wm8350,
1034 WM8350_GPIO_INT_STATUS_MASK,
1035 WM8350_IM_GP4_EINT);
1036 case WM8350_IRQ_GPIO(5):
1037 return wm8350_clear_bits(wm8350,
1038 WM8350_GPIO_INT_STATUS_MASK,
1039 WM8350_IM_GP5_EINT);
1040 case WM8350_IRQ_GPIO(6):
1041 return wm8350_clear_bits(wm8350,
1042 WM8350_GPIO_INT_STATUS_MASK,
1043 WM8350_IM_GP6_EINT);
1044 case WM8350_IRQ_GPIO(7):
1045 return wm8350_clear_bits(wm8350,
1046 WM8350_GPIO_INT_STATUS_MASK,
1047 WM8350_IM_GP7_EINT);
1048 case WM8350_IRQ_GPIO(8):
1049 return wm8350_clear_bits(wm8350,
1050 WM8350_GPIO_INT_STATUS_MASK,
1051 WM8350_IM_GP8_EINT);
1052 case WM8350_IRQ_GPIO(9):
1053 return wm8350_clear_bits(wm8350,
1054 WM8350_GPIO_INT_STATUS_MASK,
1055 WM8350_IM_GP9_EINT);
1056 case WM8350_IRQ_GPIO(10):
1057 return wm8350_clear_bits(wm8350,
1058 WM8350_GPIO_INT_STATUS_MASK,
1059 WM8350_IM_GP10_EINT);
1060 case WM8350_IRQ_GPIO(11):
1061 return wm8350_clear_bits(wm8350,
1062 WM8350_GPIO_INT_STATUS_MASK,
1063 WM8350_IM_GP11_EINT);
1064 case WM8350_IRQ_GPIO(12):
1065 return wm8350_clear_bits(wm8350,
1066 WM8350_GPIO_INT_STATUS_MASK,
1067 WM8350_IM_GP12_EINT);
1068 default:
1069 dev_warn(wm8350->dev, "Attempting to unmask unknown IRQ %d\n",
1070 irq);
1071 return -EINVAL;
1072 }
1073 return 0;
1074 }
1075 EXPORT_SYMBOL_GPL(wm8350_unmask_irq);
1076
1077 int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref)
1078 {
1079 u16 reg, result = 0;
1080 int tries = 5;
1081
1082 if (channel < WM8350_AUXADC_AUX1 || channel > WM8350_AUXADC_TEMP)
1083 return -EINVAL;
1084 if (channel >= WM8350_AUXADC_USB && channel <= WM8350_AUXADC_TEMP
1085 && (scale != 0 || vref != 0))
1086 return -EINVAL;
1087
1088 mutex_lock(&wm8350->auxadc_mutex);
1089
1090 /* Turn on the ADC */
1091 reg = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5);
1092 wm8350_reg_write(wm8350, WM8350_POWER_MGMT_5, reg | WM8350_AUXADC_ENA);
1093
1094 if (scale || vref) {
1095 reg = scale << 13;
1096 reg |= vref << 12;
1097 wm8350_reg_write(wm8350, WM8350_AUX1_READBACK + channel, reg);
1098 }
1099
1100 reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
1101 reg |= 1 << channel | WM8350_AUXADC_POLL;
1102 wm8350_reg_write(wm8350, WM8350_DIGITISER_CONTROL_1, reg);
1103
1104 do {
1105 schedule_timeout_interruptible(1);
1106 reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
1107 } while ((reg & WM8350_AUXADC_POLL) && --tries);
1108
1109 if (!tries)
1110 dev_err(wm8350->dev, "adc chn %d read timeout\n", channel);
1111 else
1112 result = wm8350_reg_read(wm8350,
1113 WM8350_AUX1_READBACK + channel);
1114
1115 /* Turn off the ADC */
1116 reg = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5);
1117 wm8350_reg_write(wm8350, WM8350_POWER_MGMT_5,
1118 reg & ~WM8350_AUXADC_ENA);
1119
1120 mutex_unlock(&wm8350->auxadc_mutex);
1121
1122 return result & WM8350_AUXADC_DATA1_MASK;
1123 }
1124 EXPORT_SYMBOL_GPL(wm8350_read_auxadc);
1125
1126 /*
1127 * Cache is always host endian.
1128 */
1129 static int wm8350_create_cache(struct wm8350 *wm8350, int type, int mode)
1130 {
1131 int i, ret = 0;
1132 u16 value;
1133 const u16 *reg_map;
1134
1135 switch (type) {
1136 case 0:
1137 switch (mode) {
1138 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_0
1139 case 0:
1140 reg_map = wm8350_mode0_defaults;
1141 break;
1142 #endif
1143 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_1
1144 case 1:
1145 reg_map = wm8350_mode1_defaults;
1146 break;
1147 #endif
1148 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_2
1149 case 2:
1150 reg_map = wm8350_mode2_defaults;
1151 break;
1152 #endif
1153 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_3
1154 case 3:
1155 reg_map = wm8350_mode3_defaults;
1156 break;
1157 #endif
1158 default:
1159 dev_err(wm8350->dev,
1160 "WM8350 configuration mode %d not supported\n",
1161 mode);
1162 return -EINVAL;
1163 }
1164 break;
1165
1166 case 1:
1167 switch (mode) {
1168 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_0
1169 case 0:
1170 reg_map = wm8351_mode0_defaults;
1171 break;
1172 #endif
1173 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_1
1174 case 1:
1175 reg_map = wm8351_mode1_defaults;
1176 break;
1177 #endif
1178 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_2
1179 case 2:
1180 reg_map = wm8351_mode2_defaults;
1181 break;
1182 #endif
1183 #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_3
1184 case 3:
1185 reg_map = wm8351_mode3_defaults;
1186 break;
1187 #endif
1188 default:
1189 dev_err(wm8350->dev,
1190 "WM8351 configuration mode %d not supported\n",
1191 mode);
1192 return -EINVAL;
1193 }
1194 break;
1195
1196 case 2:
1197 switch (mode) {
1198 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_0
1199 case 0:
1200 reg_map = wm8352_mode0_defaults;
1201 break;
1202 #endif
1203 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_1
1204 case 1:
1205 reg_map = wm8352_mode1_defaults;
1206 break;
1207 #endif
1208 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_2
1209 case 2:
1210 reg_map = wm8352_mode2_defaults;
1211 break;
1212 #endif
1213 #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_3
1214 case 3:
1215 reg_map = wm8352_mode3_defaults;
1216 break;
1217 #endif
1218 default:
1219 dev_err(wm8350->dev,
1220 "WM8352 configuration mode %d not supported\n",
1221 mode);
1222 return -EINVAL;
1223 }
1224 break;
1225
1226 default:
1227 dev_err(wm8350->dev,
1228 "WM835x configuration mode %d not supported\n",
1229 mode);
1230 return -EINVAL;
1231 }
1232
1233 wm8350->reg_cache =
1234 kmalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL);
1235 if (wm8350->reg_cache == NULL)
1236 return -ENOMEM;
1237
1238 /* Read the initial cache state back from the device - this is
1239 * a PMIC so the device many not be in a virgin state and we
1240 * can't rely on the silicon values.
1241 */
1242 ret = wm8350->read_dev(wm8350, 0,
1243 sizeof(u16) * (WM8350_MAX_REGISTER + 1),
1244 wm8350->reg_cache);
1245 if (ret < 0) {
1246 dev_err(wm8350->dev,
1247 "failed to read initial cache values\n");
1248 goto out;
1249 }
1250
1251 /* Mask out uncacheable/unreadable bits and the audio. */
1252 for (i = 0; i < WM8350_MAX_REGISTER; i++) {
1253 if (wm8350_reg_io_map[i].readable &&
1254 (i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) {
1255 value = be16_to_cpu(wm8350->reg_cache[i]);
1256 value &= wm8350_reg_io_map[i].readable;
1257 wm8350->reg_cache[i] = value;
1258 } else
1259 wm8350->reg_cache[i] = reg_map[i];
1260 }
1261
1262 out:
1263 return ret;
1264 }
1265
1266 /*
1267 * Register a client device. This is non-fatal since there is no need to
1268 * fail the entire device init due to a single platform device failing.
1269 */
1270 static void wm8350_client_dev_register(struct wm8350 *wm8350,
1271 const char *name,
1272 struct platform_device **pdev)
1273 {
1274 int ret;
1275
1276 *pdev = platform_device_alloc(name, -1);
1277 if (pdev == NULL) {
1278 dev_err(wm8350->dev, "Failed to allocate %s\n", name);
1279 return;
1280 }
1281
1282 (*pdev)->dev.parent = wm8350->dev;
1283 platform_set_drvdata(*pdev, wm8350);
1284 ret = platform_device_add(*pdev);
1285 if (ret != 0) {
1286 dev_err(wm8350->dev, "Failed to register %s: %d\n", name, ret);
1287 platform_device_put(*pdev);
1288 *pdev = NULL;
1289 }
1290 }
1291
1292 int wm8350_device_init(struct wm8350 *wm8350, int irq,
1293 struct wm8350_platform_data *pdata)
1294 {
1295 int ret;
1296 u16 id1, id2, mask_rev;
1297 u16 cust_id, mode, chip_rev;
1298
1299 /* get WM8350 revision and config mode */
1300 ret = wm8350->read_dev(wm8350, WM8350_RESET_ID, sizeof(id1), &id1);
1301 if (ret != 0) {
1302 dev_err(wm8350->dev, "Failed to read ID: %d\n", ret);
1303 goto err;
1304 }
1305
1306 ret = wm8350->read_dev(wm8350, WM8350_ID, sizeof(id2), &id2);
1307 if (ret != 0) {
1308 dev_err(wm8350->dev, "Failed to read ID: %d\n", ret);
1309 goto err;
1310 }
1311
1312 ret = wm8350->read_dev(wm8350, WM8350_REVISION, sizeof(mask_rev),
1313 &mask_rev);
1314 if (ret != 0) {
1315 dev_err(wm8350->dev, "Failed to read revision: %d\n", ret);
1316 goto err;
1317 }
1318
1319 id1 = be16_to_cpu(id1);
1320 id2 = be16_to_cpu(id2);
1321 mask_rev = be16_to_cpu(mask_rev);
1322
1323 if (id1 != 0x6143) {
1324 dev_err(wm8350->dev,
1325 "Device with ID %x is not a WM8350\n", id1);
1326 ret = -ENODEV;
1327 goto err;
1328 }
1329
1330 mode = id2 & WM8350_CONF_STS_MASK >> 10;
1331 cust_id = id2 & WM8350_CUST_ID_MASK;
1332 chip_rev = (id2 & WM8350_CHIP_REV_MASK) >> 12;
1333 dev_info(wm8350->dev,
1334 "CONF_STS %d, CUST_ID %d, MASK_REV %d, CHIP_REV %d\n",
1335 mode, cust_id, mask_rev, chip_rev);
1336
1337 if (cust_id != 0) {
1338 dev_err(wm8350->dev, "Unsupported CUST_ID\n");
1339 ret = -ENODEV;
1340 goto err;
1341 }
1342
1343 switch (mask_rev) {
1344 case 0:
1345 wm8350->pmic.max_dcdc = WM8350_DCDC_6;
1346 wm8350->pmic.max_isink = WM8350_ISINK_B;
1347
1348 switch (chip_rev) {
1349 case WM8350_REV_E:
1350 dev_info(wm8350->dev, "WM8350 Rev E\n");
1351 break;
1352 case WM8350_REV_F:
1353 dev_info(wm8350->dev, "WM8350 Rev F\n");
1354 break;
1355 case WM8350_REV_G:
1356 dev_info(wm8350->dev, "WM8350 Rev G\n");
1357 wm8350->power.rev_g_coeff = 1;
1358 break;
1359 case WM8350_REV_H:
1360 dev_info(wm8350->dev, "WM8350 Rev H\n");
1361 wm8350->power.rev_g_coeff = 1;
1362 break;
1363 default:
1364 /* For safety we refuse to run on unknown hardware */
1365 dev_err(wm8350->dev, "Unknown WM8350 CHIP_REV\n");
1366 ret = -ENODEV;
1367 goto err;
1368 }
1369 break;
1370
1371 case 1:
1372 wm8350->pmic.max_dcdc = WM8350_DCDC_4;
1373 wm8350->pmic.max_isink = WM8350_ISINK_A;
1374
1375 switch (chip_rev) {
1376 case 0:
1377 dev_info(wm8350->dev, "WM8351 Rev A\n");
1378 wm8350->power.rev_g_coeff = 1;
1379 break;
1380
1381 case 1:
1382 dev_info(wm8350->dev, "WM8351 Rev B\n");
1383 wm8350->power.rev_g_coeff = 1;
1384 break;
1385
1386 default:
1387 dev_err(wm8350->dev, "Unknown WM8351 CHIP_REV\n");
1388 ret = -ENODEV;
1389 goto err;
1390 }
1391 break;
1392
1393 case 2:
1394 wm8350->pmic.max_dcdc = WM8350_DCDC_6;
1395 wm8350->pmic.max_isink = WM8350_ISINK_B;
1396
1397 switch (chip_rev) {
1398 case 0:
1399 dev_info(wm8350->dev, "WM8352 Rev A\n");
1400 wm8350->power.rev_g_coeff = 1;
1401 break;
1402
1403 default:
1404 dev_err(wm8350->dev, "Unknown WM8352 CHIP_REV\n");
1405 ret = -ENODEV;
1406 goto err;
1407 }
1408 break;
1409
1410 default:
1411 dev_err(wm8350->dev, "Unknown MASK_REV\n");
1412 ret = -ENODEV;
1413 goto err;
1414 }
1415
1416 ret = wm8350_create_cache(wm8350, mask_rev, mode);
1417 if (ret < 0) {
1418 dev_err(wm8350->dev, "Failed to create register cache\n");
1419 return ret;
1420 }
1421
1422 wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0xFFFF);
1423 wm8350_reg_write(wm8350, WM8350_INT_STATUS_1_MASK, 0xFFFF);
1424 wm8350_reg_write(wm8350, WM8350_INT_STATUS_2_MASK, 0xFFFF);
1425 wm8350_reg_write(wm8350, WM8350_UNDER_VOLTAGE_INT_STATUS_MASK, 0xFFFF);
1426 wm8350_reg_write(wm8350, WM8350_GPIO_INT_STATUS_MASK, 0xFFFF);
1427 wm8350_reg_write(wm8350, WM8350_COMPARATOR_INT_STATUS_MASK, 0xFFFF);
1428
1429 mutex_init(&wm8350->auxadc_mutex);
1430 mutex_init(&wm8350->irq_mutex);
1431 INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);
1432 if (irq) {
1433 int flags = 0;
1434
1435 if (pdata && pdata->irq_high) {
1436 flags |= IRQF_TRIGGER_HIGH;
1437
1438 wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
1439 WM8350_IRQ_POL);
1440 } else {
1441 flags |= IRQF_TRIGGER_LOW;
1442
1443 wm8350_clear_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
1444 WM8350_IRQ_POL);
1445 }
1446
1447 ret = request_irq(irq, wm8350_irq, flags,
1448 "wm8350", wm8350);
1449 if (ret != 0) {
1450 dev_err(wm8350->dev, "Failed to request IRQ: %d\n",
1451 ret);
1452 goto err;
1453 }
1454 } else {
1455 dev_err(wm8350->dev, "No IRQ configured\n");
1456 goto err;
1457 }
1458 wm8350->chip_irq = irq;
1459
1460 if (pdata && pdata->init) {
1461 ret = pdata->init(wm8350);
1462 if (ret != 0) {
1463 dev_err(wm8350->dev, "Platform init() failed: %d\n",
1464 ret);
1465 goto err;
1466 }
1467 }
1468
1469 wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0x0);
1470
1471 wm8350_client_dev_register(wm8350, "wm8350-codec",
1472 &(wm8350->codec.pdev));
1473 wm8350_client_dev_register(wm8350, "wm8350-gpio",
1474 &(wm8350->gpio.pdev));
1475 wm8350_client_dev_register(wm8350, "wm8350-power",
1476 &(wm8350->power.pdev));
1477 wm8350_client_dev_register(wm8350, "wm8350-rtc", &(wm8350->rtc.pdev));
1478 wm8350_client_dev_register(wm8350, "wm8350-wdt", &(wm8350->wdt.pdev));
1479
1480 return 0;
1481
1482 err:
1483 kfree(wm8350->reg_cache);
1484 return ret;
1485 }
1486 EXPORT_SYMBOL_GPL(wm8350_device_init);
1487
1488 void wm8350_device_exit(struct wm8350 *wm8350)
1489 {
1490 int i;
1491
1492 for (i = 0; i < ARRAY_SIZE(wm8350->pmic.led); i++)
1493 platform_device_unregister(wm8350->pmic.led[i].pdev);
1494
1495 for (i = 0; i < ARRAY_SIZE(wm8350->pmic.pdev); i++)
1496 platform_device_unregister(wm8350->pmic.pdev[i]);
1497
1498 platform_device_unregister(wm8350->wdt.pdev);
1499 platform_device_unregister(wm8350->rtc.pdev);
1500 platform_device_unregister(wm8350->power.pdev);
1501 platform_device_unregister(wm8350->gpio.pdev);
1502 platform_device_unregister(wm8350->codec.pdev);
1503
1504 free_irq(wm8350->chip_irq, wm8350);
1505 flush_work(&wm8350->irq_work);
1506 kfree(wm8350->reg_cache);
1507 }
1508 EXPORT_SYMBOL_GPL(wm8350_device_exit);
1509
1510 MODULE_DESCRIPTION("WM8350 AudioPlus PMIC core driver");
1511 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards