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-rw-r--r--drivers/mfd/ab5500-core.c1439
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diff --git a/drivers/mfd/ab5500-core.c b/drivers/mfd/ab5500-core.c
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1/*
2 * Copyright (C) 2007-2011 ST-Ericsson
3 * License terms: GNU General Public License (GPL) version 2
4 * Low-level core for exclusive access to the AB5500 IC on the I2C bus
5 * and some basic chip-configuration.
6 * Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
7 * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
8 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
9 * Author: Rickard Andersson <rickard.andersson@stericsson.com>
10 * Author: Karl Komierowski <karl.komierowski@stericsson.com>
11 * Author: Bibek Basu <bibek.basu@stericsson.com>
12 *
13 * TODO: Event handling with irq_chip. Waiting for PRCMU fw support.
14 */
15
16#include <linux/module.h>
17#include <linux/mutex.h>
18#include <linux/err.h>
19#include <linux/platform_device.h>
20#include <linux/slab.h>
21#include <linux/device.h>
22#include <linux/irq.h>
23#include <linux/interrupt.h>
24#include <linux/random.h>
25#include <linux/mfd/abx500.h>
26#include <linux/mfd/abx500/ab5500.h>
27#include <linux/list.h>
28#include <linux/bitops.h>
29#include <linux/spinlock.h>
30#include <linux/mfd/core.h>
31#include <linux/mfd/db5500-prcmu.h>
32
33#include "ab5500-core.h"
34#include "ab5500-debugfs.h"
35
36#define AB5500_NUM_EVENT_REG 23
37#define AB5500_IT_LATCH0_REG 0x40
38#define AB5500_IT_MASK0_REG 0x60
39
40/*
41 * Permissible register ranges for reading and writing per device and bank.
42 *
43 * The ranges must be listed in increasing address order, and no overlaps are
44 * allowed. It is assumed that write permission implies read permission
45 * (i.e. only RO and RW permissions should be used). Ranges with write
46 * permission must not be split up.
47 */
48
49#define NO_RANGE {.count = 0, .range = NULL,}
50static struct ab5500_i2c_banks ab5500_bank_ranges[AB5500_NUM_DEVICES] = {
51 [AB5500_DEVID_USB] = {
52 .nbanks = 1,
53 .bank = (struct ab5500_i2c_ranges []) {
54 {
55 .bankid = AB5500_BANK_USB,
56 .nranges = 12,
57 .range = (struct ab5500_reg_range[]) {
58 {
59 .first = 0x01,
60 .last = 0x01,
61 .perm = AB5500_PERM_RW,
62 },
63 {
64 .first = 0x80,
65 .last = 0x83,
66 .perm = AB5500_PERM_RW,
67 },
68 {
69 .first = 0x87,
70 .last = 0x8A,
71 .perm = AB5500_PERM_RW,
72 },
73 {
74 .first = 0x8B,
75 .last = 0x8B,
76 .perm = AB5500_PERM_RO,
77 },
78 {
79 .first = 0x91,
80 .last = 0x92,
81 .perm = AB5500_PERM_RO,
82 },
83 {
84 .first = 0x93,
85 .last = 0x93,
86 .perm = AB5500_PERM_RW,
87 },
88 {
89 .first = 0x94,
90 .last = 0x94,
91 .perm = AB5500_PERM_RO,
92 },
93 {
94 .first = 0xA8,
95 .last = 0xB0,
96 .perm = AB5500_PERM_RO,
97 },
98 {
99 .first = 0xB2,
100 .last = 0xB2,
101 .perm = AB5500_PERM_RO,
102 },
103 {
104 .first = 0xB4,
105 .last = 0xBC,
106 .perm = AB5500_PERM_RO,
107 },
108 {
109 .first = 0xBF,
110 .last = 0xBF,
111 .perm = AB5500_PERM_RO,
112 },
113 {
114 .first = 0xC1,
115 .last = 0xC5,
116 .perm = AB5500_PERM_RO,
117 },
118 },
119 },
120 },
121 },
122 [AB5500_DEVID_ADC] = {
123 .nbanks = 1,
124 .bank = (struct ab5500_i2c_ranges []) {
125 {
126 .bankid = AB5500_BANK_ADC,
127 .nranges = 6,
128 .range = (struct ab5500_reg_range[]) {
129 {
130 .first = 0x1F,
131 .last = 0x22,
132 .perm = AB5500_PERM_RO,
133 },
134 {
135 .first = 0x23,
136 .last = 0x24,
137 .perm = AB5500_PERM_RW,
138 },
139 {
140 .first = 0x26,
141 .last = 0x2D,
142 .perm = AB5500_PERM_RO,
143 },
144 {
145 .first = 0x2F,
146 .last = 0x34,
147 .perm = AB5500_PERM_RW,
148 },
149 {
150 .first = 0x37,
151 .last = 0x57,
152 .perm = AB5500_PERM_RW,
153 },
154 {
155 .first = 0x58,
156 .last = 0x58,
157 .perm = AB5500_PERM_RO,
158 },
159 },
160 },
161 },
162 },
163 [AB5500_DEVID_LEDS] = {
164 .nbanks = 1,
165 .bank = (struct ab5500_i2c_ranges []) {
166 {
167 .bankid = AB5500_BANK_LED,
168 .nranges = 1,
169 .range = (struct ab5500_reg_range[]) {
170 {
171 .first = 0x00,
172 .last = 0x0C,
173 .perm = AB5500_PERM_RW,
174 },
175 },
176 },
177 },
178 },
179 [AB5500_DEVID_VIDEO] = {
180 .nbanks = 1,
181 .bank = (struct ab5500_i2c_ranges []) {
182 {
183 .bankid = AB5500_BANK_VDENC,
184 .nranges = 12,
185 .range = (struct ab5500_reg_range[]) {
186 {
187 .first = 0x00,
188 .last = 0x08,
189 .perm = AB5500_PERM_RW,
190 },
191 {
192 .first = 0x09,
193 .last = 0x09,
194 .perm = AB5500_PERM_RO,
195 },
196 {
197 .first = 0x0A,
198 .last = 0x12,
199 .perm = AB5500_PERM_RW,
200 },
201 {
202 .first = 0x15,
203 .last = 0x19,
204 .perm = AB5500_PERM_RW,
205 },
206 {
207 .first = 0x1B,
208 .last = 0x21,
209 .perm = AB5500_PERM_RW,
210 },
211 {
212 .first = 0x27,
213 .last = 0x2C,
214 .perm = AB5500_PERM_RW,
215 },
216 {
217 .first = 0x41,
218 .last = 0x41,
219 .perm = AB5500_PERM_RW,
220 },
221 {
222 .first = 0x45,
223 .last = 0x5B,
224 .perm = AB5500_PERM_RW,
225 },
226 {
227 .first = 0x5D,
228 .last = 0x5D,
229 .perm = AB5500_PERM_RW,
230 },
231 {
232 .first = 0x69,
233 .last = 0x69,
234 .perm = AB5500_PERM_RW,
235 },
236 {
237 .first = 0x6C,
238 .last = 0x6D,
239 .perm = AB5500_PERM_RW,
240 },
241 {
242 .first = 0x80,
243 .last = 0x81,
244 .perm = AB5500_PERM_RW,
245 },
246 },
247 },
248 },
249 },
250 [AB5500_DEVID_REGULATORS] = {
251 .nbanks = 2,
252 .bank = (struct ab5500_i2c_ranges []) {
253 {
254 .bankid = AB5500_BANK_STARTUP,
255 .nranges = 12,
256 .range = (struct ab5500_reg_range[]) {
257 {
258 .first = 0x00,
259 .last = 0x01,
260 .perm = AB5500_PERM_RW,
261 },
262 {
263 .first = 0x1F,
264 .last = 0x1F,
265 .perm = AB5500_PERM_RW,
266 },
267 {
268 .first = 0x2E,
269 .last = 0x2E,
270 .perm = AB5500_PERM_RO,
271 },
272 {
273 .first = 0x2F,
274 .last = 0x30,
275 .perm = AB5500_PERM_RW,
276 },
277 {
278 .first = 0x50,
279 .last = 0x51,
280 .perm = AB5500_PERM_RW,
281 },
282 {
283 .first = 0x60,
284 .last = 0x61,
285 .perm = AB5500_PERM_RW,
286 },
287 {
288 .first = 0x66,
289 .last = 0x8A,
290 .perm = AB5500_PERM_RW,
291 },
292 {
293 .first = 0x8C,
294 .last = 0x96,
295 .perm = AB5500_PERM_RW,
296 },
297 {
298 .first = 0xAA,
299 .last = 0xB4,
300 .perm = AB5500_PERM_RW,
301 },
302 {
303 .first = 0xB7,
304 .last = 0xBF,
305 .perm = AB5500_PERM_RW,
306 },
307 {
308 .first = 0xC1,
309 .last = 0xCA,
310 .perm = AB5500_PERM_RW,
311 },
312 {
313 .first = 0xD3,
314 .last = 0xE0,
315 .perm = AB5500_PERM_RW,
316 },
317 },
318 },
319 {
320 .bankid = AB5500_BANK_SIM_USBSIM,
321 .nranges = 1,
322 .range = (struct ab5500_reg_range[]) {
323 {
324 .first = 0x13,
325 .last = 0x19,
326 .perm = AB5500_PERM_RW,
327 },
328 },
329 },
330 },
331 },
332 [AB5500_DEVID_SIM] = {
333 .nbanks = 1,
334 .bank = (struct ab5500_i2c_ranges []) {
335 {
336 .bankid = AB5500_BANK_SIM_USBSIM,
337 .nranges = 1,
338 .range = (struct ab5500_reg_range[]) {
339 {
340 .first = 0x13,
341 .last = 0x19,
342 .perm = AB5500_PERM_RW,
343 },
344 },
345 },
346 },
347 },
348 [AB5500_DEVID_RTC] = {
349 .nbanks = 1,
350 .bank = (struct ab5500_i2c_ranges []) {
351 {
352 .bankid = AB5500_BANK_RTC,
353 .nranges = 2,
354 .range = (struct ab5500_reg_range[]) {
355 {
356 .first = 0x00,
357 .last = 0x04,
358 .perm = AB5500_PERM_RW,
359 },
360 {
361 .first = 0x06,
362 .last = 0x0C,
363 .perm = AB5500_PERM_RW,
364 },
365 },
366 },
367 },
368 },
369 [AB5500_DEVID_CHARGER] = {
370 .nbanks = 1,
371 .bank = (struct ab5500_i2c_ranges []) {
372 {
373 .bankid = AB5500_BANK_CHG,
374 .nranges = 2,
375 .range = (struct ab5500_reg_range[]) {
376 {
377 .first = 0x11,
378 .last = 0x11,
379 .perm = AB5500_PERM_RO,
380 },
381 {
382 .first = 0x12,
383 .last = 0x1B,
384 .perm = AB5500_PERM_RW,
385 },
386 },
387 },
388 },
389 },
390 [AB5500_DEVID_FUELGAUGE] = {
391 .nbanks = 1,
392 .bank = (struct ab5500_i2c_ranges []) {
393 {
394 .bankid = AB5500_BANK_FG_BATTCOM_ACC,
395 .nranges = 2,
396 .range = (struct ab5500_reg_range[]) {
397 {
398 .first = 0x00,
399 .last = 0x0B,
400 .perm = AB5500_PERM_RO,
401 },
402 {
403 .first = 0x0C,
404 .last = 0x10,
405 .perm = AB5500_PERM_RW,
406 },
407 },
408 },
409 },
410 },
411 [AB5500_DEVID_VIBRATOR] = {
412 .nbanks = 1,
413 .bank = (struct ab5500_i2c_ranges []) {
414 {
415 .bankid = AB5500_BANK_VIBRA,
416 .nranges = 2,
417 .range = (struct ab5500_reg_range[]) {
418 {
419 .first = 0x10,
420 .last = 0x13,
421 .perm = AB5500_PERM_RW,
422 },
423 {
424 .first = 0xFE,
425 .last = 0xFE,
426 .perm = AB5500_PERM_RW,
427 },
428 },
429 },
430 },
431 },
432 [AB5500_DEVID_CODEC] = {
433 .nbanks = 1,
434 .bank = (struct ab5500_i2c_ranges []) {
435 {
436 .bankid = AB5500_BANK_AUDIO_HEADSETUSB,
437 .nranges = 2,
438 .range = (struct ab5500_reg_range[]) {
439 {
440 .first = 0x00,
441 .last = 0x48,
442 .perm = AB5500_PERM_RW,
443 },
444 {
445 .first = 0xEB,
446 .last = 0xFB,
447 .perm = AB5500_PERM_RW,
448 },
449 },
450 },
451 },
452 },
453 [AB5500_DEVID_POWER] = {
454 .nbanks = 2,
455 .bank = (struct ab5500_i2c_ranges []) {
456 {
457 .bankid = AB5500_BANK_STARTUP,
458 .nranges = 1,
459 .range = (struct ab5500_reg_range[]) {
460 {
461 .first = 0x30,
462 .last = 0x30,
463 .perm = AB5500_PERM_RW,
464 },
465 },
466 },
467 {
468 .bankid = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
469 .nranges = 1,
470 .range = (struct ab5500_reg_range[]) {
471 {
472 .first = 0x01,
473 .last = 0x01,
474 .perm = AB5500_PERM_RW,
475 },
476 },
477 },
478 },
479 },
480};
481
482#define AB5500_IRQ(bank, bit) ((bank) * 8 + (bit))
483
484/* I appologize for the resource names beeing a mix of upper case
485 * and lower case but I want them to be exact as the documentation */
486static struct mfd_cell ab5500_devs[AB5500_NUM_DEVICES] = {
487 [AB5500_DEVID_LEDS] = {
488 .name = "ab5500-leds",
489 .id = AB5500_DEVID_LEDS,
490 },
491 [AB5500_DEVID_POWER] = {
492 .name = "ab5500-power",
493 .id = AB5500_DEVID_POWER,
494 },
495 [AB5500_DEVID_REGULATORS] = {
496 .name = "ab5500-regulator",
497 .id = AB5500_DEVID_REGULATORS,
498 },
499 [AB5500_DEVID_SIM] = {
500 .name = "ab5500-sim",
501 .id = AB5500_DEVID_SIM,
502 .num_resources = 1,
503 .resources = (struct resource[]) {
504 {
505 .name = "SIMOFF",
506 .flags = IORESOURCE_IRQ,
507 .start = AB5500_IRQ(2, 0), /*rising*/
508 .end = AB5500_IRQ(2, 1), /*falling*/
509 },
510 },
511 },
512 [AB5500_DEVID_RTC] = {
513 .name = "ab5500-rtc",
514 .id = AB5500_DEVID_RTC,
515 .num_resources = 1,
516 .resources = (struct resource[]) {
517 {
518 .name = "RTC_Alarm",
519 .flags = IORESOURCE_IRQ,
520 .start = AB5500_IRQ(1, 7),
521 .end = AB5500_IRQ(1, 7),
522 }
523 },
524 },
525 [AB5500_DEVID_CHARGER] = {
526 .name = "ab5500-charger",
527 .id = AB5500_DEVID_CHARGER,
528 },
529 [AB5500_DEVID_ADC] = {
530 .name = "ab5500-adc",
531 .id = AB5500_DEVID_ADC,
532 .num_resources = 10,
533 .resources = (struct resource[]) {
534 {
535 .name = "TRIGGER-0",
536 .flags = IORESOURCE_IRQ,
537 .start = AB5500_IRQ(0, 0),
538 .end = AB5500_IRQ(0, 0),
539 },
540 {
541 .name = "TRIGGER-1",
542 .flags = IORESOURCE_IRQ,
543 .start = AB5500_IRQ(0, 1),
544 .end = AB5500_IRQ(0, 1),
545 },
546 {
547 .name = "TRIGGER-2",
548 .flags = IORESOURCE_IRQ,
549 .start = AB5500_IRQ(0, 2),
550 .end = AB5500_IRQ(0, 2),
551 },
552 {
553 .name = "TRIGGER-3",
554 .flags = IORESOURCE_IRQ,
555 .start = AB5500_IRQ(0, 3),
556 .end = AB5500_IRQ(0, 3),
557 },
558 {
559 .name = "TRIGGER-4",
560 .flags = IORESOURCE_IRQ,
561 .start = AB5500_IRQ(0, 4),
562 .end = AB5500_IRQ(0, 4),
563 },
564 {
565 .name = "TRIGGER-5",
566 .flags = IORESOURCE_IRQ,
567 .start = AB5500_IRQ(0, 5),
568 .end = AB5500_IRQ(0, 5),
569 },
570 {
571 .name = "TRIGGER-6",
572 .flags = IORESOURCE_IRQ,
573 .start = AB5500_IRQ(0, 6),
574 .end = AB5500_IRQ(0, 6),
575 },
576 {
577 .name = "TRIGGER-7",
578 .flags = IORESOURCE_IRQ,
579 .start = AB5500_IRQ(0, 7),
580 .end = AB5500_IRQ(0, 7),
581 },
582 {
583 .name = "TRIGGER-VBAT",
584 .flags = IORESOURCE_IRQ,
585 .start = AB5500_IRQ(0, 8),
586 .end = AB5500_IRQ(0, 8),
587 },
588 {
589 .name = "TRIGGER-VBAT-TXON",
590 .flags = IORESOURCE_IRQ,
591 .start = AB5500_IRQ(0, 9),
592 .end = AB5500_IRQ(0, 9),
593 },
594 },
595 },
596 [AB5500_DEVID_FUELGAUGE] = {
597 .name = "ab5500-fuelgauge",
598 .id = AB5500_DEVID_FUELGAUGE,
599 .num_resources = 6,
600 .resources = (struct resource[]) {
601 {
602 .name = "Batt_attach",
603 .flags = IORESOURCE_IRQ,
604 .start = AB5500_IRQ(7, 5),
605 .end = AB5500_IRQ(7, 5),
606 },
607 {
608 .name = "Batt_removal",
609 .flags = IORESOURCE_IRQ,
610 .start = AB5500_IRQ(7, 6),
611 .end = AB5500_IRQ(7, 6),
612 },
613 {
614 .name = "UART_framing",
615 .flags = IORESOURCE_IRQ,
616 .start = AB5500_IRQ(7, 7),
617 .end = AB5500_IRQ(7, 7),
618 },
619 {
620 .name = "UART_overrun",
621 .flags = IORESOURCE_IRQ,
622 .start = AB5500_IRQ(8, 0),
623 .end = AB5500_IRQ(8, 0),
624 },
625 {
626 .name = "UART_Rdy_RX",
627 .flags = IORESOURCE_IRQ,
628 .start = AB5500_IRQ(8, 1),
629 .end = AB5500_IRQ(8, 1),
630 },
631 {
632 .name = "UART_Rdy_TX",
633 .flags = IORESOURCE_IRQ,
634 .start = AB5500_IRQ(8, 2),
635 .end = AB5500_IRQ(8, 2),
636 },
637 },
638 },
639 [AB5500_DEVID_VIBRATOR] = {
640 .name = "ab5500-vibrator",
641 .id = AB5500_DEVID_VIBRATOR,
642 },
643 [AB5500_DEVID_CODEC] = {
644 .name = "ab5500-codec",
645 .id = AB5500_DEVID_CODEC,
646 .num_resources = 3,
647 .resources = (struct resource[]) {
648 {
649 .name = "audio_spkr1_ovc",
650 .flags = IORESOURCE_IRQ,
651 .start = AB5500_IRQ(9, 5),
652 .end = AB5500_IRQ(9, 5),
653 },
654 {
655 .name = "audio_plllocked",
656 .flags = IORESOURCE_IRQ,
657 .start = AB5500_IRQ(9, 6),
658 .end = AB5500_IRQ(9, 6),
659 },
660 {
661 .name = "audio_spkr2_ovc",
662 .flags = IORESOURCE_IRQ,
663 .start = AB5500_IRQ(17, 4),
664 .end = AB5500_IRQ(17, 4),
665 },
666 },
667 },
668 [AB5500_DEVID_USB] = {
669 .name = "ab5500-usb",
670 .id = AB5500_DEVID_USB,
671 .num_resources = 36,
672 .resources = (struct resource[]) {
673 {
674 .name = "Link_Update",
675 .flags = IORESOURCE_IRQ,
676 .start = AB5500_IRQ(22, 1),
677 .end = AB5500_IRQ(22, 1),
678 },
679 {
680 .name = "DCIO",
681 .flags = IORESOURCE_IRQ,
682 .start = AB5500_IRQ(8, 3),
683 .end = AB5500_IRQ(8, 4),
684 },
685 {
686 .name = "VBUS_R",
687 .flags = IORESOURCE_IRQ,
688 .start = AB5500_IRQ(8, 5),
689 .end = AB5500_IRQ(8, 5),
690 },
691 {
692 .name = "VBUS_F",
693 .flags = IORESOURCE_IRQ,
694 .start = AB5500_IRQ(8, 6),
695 .end = AB5500_IRQ(8, 6),
696 },
697 {
698 .name = "CHGstate_10_PCVBUSchg",
699 .flags = IORESOURCE_IRQ,
700 .start = AB5500_IRQ(8, 7),
701 .end = AB5500_IRQ(8, 7),
702 },
703 {
704 .name = "DCIOreverse_ovc",
705 .flags = IORESOURCE_IRQ,
706 .start = AB5500_IRQ(9, 0),
707 .end = AB5500_IRQ(9, 0),
708 },
709 {
710 .name = "USBCharDetDone",
711 .flags = IORESOURCE_IRQ,
712 .start = AB5500_IRQ(9, 1),
713 .end = AB5500_IRQ(9, 1),
714 },
715 {
716 .name = "DCIO_no_limit",
717 .flags = IORESOURCE_IRQ,
718 .start = AB5500_IRQ(9, 2),
719 .end = AB5500_IRQ(9, 2),
720 },
721 {
722 .name = "USB_suspend",
723 .flags = IORESOURCE_IRQ,
724 .start = AB5500_IRQ(9, 3),
725 .end = AB5500_IRQ(9, 3),
726 },
727 {
728 .name = "DCIOreverse_fwdcurrent",
729 .flags = IORESOURCE_IRQ,
730 .start = AB5500_IRQ(9, 4),
731 .end = AB5500_IRQ(9, 4),
732 },
733 {
734 .name = "Vbus_Imeasmax_change",
735 .flags = IORESOURCE_IRQ,
736 .start = AB5500_IRQ(9, 5),
737 .end = AB5500_IRQ(9, 6),
738 },
739 {
740 .name = "OVV",
741 .flags = IORESOURCE_IRQ,
742 .start = AB5500_IRQ(14, 5),
743 .end = AB5500_IRQ(14, 5),
744 },
745 {
746 .name = "USBcharging_NOTok",
747 .flags = IORESOURCE_IRQ,
748 .start = AB5500_IRQ(15, 3),
749 .end = AB5500_IRQ(15, 3),
750 },
751 {
752 .name = "usb_adp_sensoroff",
753 .flags = IORESOURCE_IRQ,
754 .start = AB5500_IRQ(15, 6),
755 .end = AB5500_IRQ(15, 6),
756 },
757 {
758 .name = "usb_adp_probeplug",
759 .flags = IORESOURCE_IRQ,
760 .start = AB5500_IRQ(15, 7),
761 .end = AB5500_IRQ(15, 7),
762 },
763 {
764 .name = "usb_adp_sinkerror",
765 .flags = IORESOURCE_IRQ,
766 .start = AB5500_IRQ(16, 0),
767 .end = AB5500_IRQ(16, 6),
768 },
769 {
770 .name = "usb_adp_sourceerror",
771 .flags = IORESOURCE_IRQ,
772 .start = AB5500_IRQ(16, 1),
773 .end = AB5500_IRQ(16, 1),
774 },
775 {
776 .name = "usb_idgnd_r",
777 .flags = IORESOURCE_IRQ,
778 .start = AB5500_IRQ(16, 2),
779 .end = AB5500_IRQ(16, 2),
780 },
781 {
782 .name = "usb_idgnd_f",
783 .flags = IORESOURCE_IRQ,
784 .start = AB5500_IRQ(16, 3),
785 .end = AB5500_IRQ(16, 3),
786 },
787 {
788 .name = "usb_iddetR1",
789 .flags = IORESOURCE_IRQ,
790 .start = AB5500_IRQ(16, 4),
791 .end = AB5500_IRQ(16, 5),
792 },
793 {
794 .name = "usb_iddetR2",
795 .flags = IORESOURCE_IRQ,
796 .start = AB5500_IRQ(16, 6),
797 .end = AB5500_IRQ(16, 7),
798 },
799 {
800 .name = "usb_iddetR3",
801 .flags = IORESOURCE_IRQ,
802 .start = AB5500_IRQ(17, 0),
803 .end = AB5500_IRQ(17, 1),
804 },
805 {
806 .name = "usb_iddetR4",
807 .flags = IORESOURCE_IRQ,
808 .start = AB5500_IRQ(17, 2),
809 .end = AB5500_IRQ(17, 3),
810 },
811 {
812 .name = "CharTempWindowOk",
813 .flags = IORESOURCE_IRQ,
814 .start = AB5500_IRQ(17, 7),
815 .end = AB5500_IRQ(18, 0),
816 },
817 {
818 .name = "USB_SprDetect",
819 .flags = IORESOURCE_IRQ,
820 .start = AB5500_IRQ(18, 1),
821 .end = AB5500_IRQ(18, 1),
822 },
823 {
824 .name = "usb_adp_probe_unplug",
825 .flags = IORESOURCE_IRQ,
826 .start = AB5500_IRQ(18, 2),
827 .end = AB5500_IRQ(18, 2),
828 },
829 {
830 .name = "VBUSChDrop",
831 .flags = IORESOURCE_IRQ,
832 .start = AB5500_IRQ(18, 3),
833 .end = AB5500_IRQ(18, 4),
834 },
835 {
836 .name = "dcio_char_rec_done",
837 .flags = IORESOURCE_IRQ,
838 .start = AB5500_IRQ(18, 5),
839 .end = AB5500_IRQ(18, 5),
840 },
841 {
842 .name = "Charging_stopped_by_temp",
843 .flags = IORESOURCE_IRQ,
844 .start = AB5500_IRQ(18, 6),
845 .end = AB5500_IRQ(18, 6),
846 },
847 {
848 .name = "CHGstate_11_SafeModeVBUS",
849 .flags = IORESOURCE_IRQ,
850 .start = AB5500_IRQ(21, 1),
851 .end = AB5500_IRQ(21, 2),
852 },
853 {
854 .name = "CHGstate_12_comletedVBUS",
855 .flags = IORESOURCE_IRQ,
856 .start = AB5500_IRQ(21, 2),
857 .end = AB5500_IRQ(21, 2),
858 },
859 {
860 .name = "CHGstate_13_completedVBUS",
861 .flags = IORESOURCE_IRQ,
862 .start = AB5500_IRQ(21, 3),
863 .end = AB5500_IRQ(21, 3),
864 },
865 {
866 .name = "CHGstate_14_FullChgDCIO",
867 .flags = IORESOURCE_IRQ,
868 .start = AB5500_IRQ(21, 4),
869 .end = AB5500_IRQ(21, 4),
870 },
871 {
872 .name = "CHGstate_15_SafeModeDCIO",
873 .flags = IORESOURCE_IRQ,
874 .start = AB5500_IRQ(21, 5),
875 .end = AB5500_IRQ(21, 5),
876 },
877 {
878 .name = "CHGstate_16_OFFsuspendDCIO",
879 .flags = IORESOURCE_IRQ,
880 .start = AB5500_IRQ(21, 6),
881 .end = AB5500_IRQ(21, 6),
882 },
883 {
884 .name = "CHGstate_17_completedDCIO",
885 .flags = IORESOURCE_IRQ,
886 .start = AB5500_IRQ(21, 7),
887 .end = AB5500_IRQ(21, 7),
888 },
889 },
890 },
891 [AB5500_DEVID_OTP] = {
892 .name = "ab5500-otp",
893 .id = AB5500_DEVID_OTP,
894 },
895 [AB5500_DEVID_VIDEO] = {
896 .name = "ab5500-video",
897 .id = AB5500_DEVID_VIDEO,
898 .num_resources = 1,
899 .resources = (struct resource[]) {
900 {
901 .name = "plugTVdet",
902 .flags = IORESOURCE_IRQ,
903 .start = AB5500_IRQ(22, 2),
904 .end = AB5500_IRQ(22, 2),
905 },
906 },
907 },
908 [AB5500_DEVID_DBIECI] = {
909 .name = "ab5500-dbieci",
910 .id = AB5500_DEVID_DBIECI,
911 .num_resources = 10,
912 .resources = (struct resource[]) {
913 {
914 .name = "COLL",
915 .flags = IORESOURCE_IRQ,
916 .start = AB5500_IRQ(14, 0),
917 .end = AB5500_IRQ(14, 0),
918 },
919 {
920 .name = "RESERR",
921 .flags = IORESOURCE_IRQ,
922 .start = AB5500_IRQ(14, 1),
923 .end = AB5500_IRQ(14, 1),
924 },
925 {
926 .name = "FRAERR",
927 .flags = IORESOURCE_IRQ,
928 .start = AB5500_IRQ(14, 2),
929 .end = AB5500_IRQ(14, 2),
930 },
931 {
932 .name = "COMERR",
933 .flags = IORESOURCE_IRQ,
934 .start = AB5500_IRQ(14, 3),
935 .end = AB5500_IRQ(14, 3),
936 },
937 {
938 .name = "BSI_indicator",
939 .flags = IORESOURCE_IRQ,
940 .start = AB5500_IRQ(14, 4),
941 .end = AB5500_IRQ(14, 4),
942 },
943 {
944 .name = "SPDSET",
945 .flags = IORESOURCE_IRQ,
946 .start = AB5500_IRQ(14, 6),
947 .end = AB5500_IRQ(14, 6),
948 },
949 {
950 .name = "DSENT",
951 .flags = IORESOURCE_IRQ,
952 .start = AB5500_IRQ(14, 7),
953 .end = AB5500_IRQ(14, 7),
954 },
955 {
956 .name = "DREC",
957 .flags = IORESOURCE_IRQ,
958 .start = AB5500_IRQ(15, 0),
959 .end = AB5500_IRQ(15, 0),
960 },
961 {
962 .name = "ACCINT",
963 .flags = IORESOURCE_IRQ,
964 .start = AB5500_IRQ(15, 1),
965 .end = AB5500_IRQ(15, 1),
966 },
967 {
968 .name = "NOPINT",
969 .flags = IORESOURCE_IRQ,
970 .start = AB5500_IRQ(15, 2),
971 .end = AB5500_IRQ(15, 2),
972 },
973 },
974 },
975 [AB5500_DEVID_ONSWA] = {
976 .name = "ab5500-onswa",
977 .id = AB5500_DEVID_ONSWA,
978 .num_resources = 2,
979 .resources = (struct resource[]) {
980 {
981 .name = "ONSWAn_rising",
982 .flags = IORESOURCE_IRQ,
983 .start = AB5500_IRQ(1, 3),
984 .end = AB5500_IRQ(1, 3),
985 },
986 {
987 .name = "ONSWAn_falling",
988 .flags = IORESOURCE_IRQ,
989 .start = AB5500_IRQ(1, 4),
990 .end = AB5500_IRQ(1, 4),
991 },
992 },
993 },
994};
995
996/*
997 * Functionality for getting/setting register values.
998 */
999int ab5500_get_register_interruptible_raw(struct ab5500 *ab,
1000 u8 bank, u8 reg,
1001 u8 *value)
1002{
1003 int err;
1004
1005 if (bank >= AB5500_NUM_BANKS)
1006 return -EINVAL;
1007
1008 err = mutex_lock_interruptible(&ab->access_mutex);
1009 if (err)
1010 return err;
1011 err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr, reg, value, 1);
1012
1013 mutex_unlock(&ab->access_mutex);
1014 return err;
1015}
1016
1017static int get_register_page_interruptible(struct ab5500 *ab, u8 bank,
1018 u8 first_reg, u8 *regvals, u8 numregs)
1019{
1020 int err;
1021
1022 if (bank >= AB5500_NUM_BANKS)
1023 return -EINVAL;
1024
1025 err = mutex_lock_interruptible(&ab->access_mutex);
1026 if (err)
1027 return err;
1028
1029 while (numregs) {
1030 /* The hardware limit for get page is 4 */
1031 u8 curnum = min_t(u8, numregs, 4u);
1032
1033 err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr,
1034 first_reg, regvals, curnum);
1035 if (err)
1036 goto out;
1037
1038 numregs -= curnum;
1039 first_reg += curnum;
1040 regvals += curnum;
1041 }
1042
1043out:
1044 mutex_unlock(&ab->access_mutex);
1045 return err;
1046}
1047
1048int ab5500_mask_and_set_register_interruptible_raw(struct ab5500 *ab, u8 bank,
1049 u8 reg, u8 bitmask, u8 bitvalues)
1050{
1051 int err = 0;
1052
1053 if (bank >= AB5500_NUM_BANKS)
1054 return -EINVAL;
1055
1056 if (bitmask) {
1057 u8 buf;
1058
1059 err = mutex_lock_interruptible(&ab->access_mutex);
1060 if (err)
1061 return err;
1062
1063 if (bitmask == 0xFF) /* No need to read in this case. */
1064 buf = bitvalues;
1065 else { /* Read and modify the register value. */
1066 err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr,
1067 reg, &buf, 1);
1068 if (err)
1069 return err;
1070
1071 buf = ((~bitmask & buf) | (bitmask & bitvalues));
1072 }
1073 /* Write the new value. */
1074 err = db5500_prcmu_abb_write(bankinfo[bank].slave_addr, reg,
1075 &buf, 1);
1076
1077 mutex_unlock(&ab->access_mutex);
1078 }
1079 return err;
1080}
1081
1082static int
1083set_register_interruptible(struct ab5500 *ab, u8 bank, u8 reg, u8 value)
1084{
1085 return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
1086 0xff, value);
1087}
1088
1089/*
1090 * Read/write permission checking functions.
1091 */
1092static const struct ab5500_i2c_ranges *get_bankref(u8 devid, u8 bank)
1093{
1094 u8 i;
1095
1096 if (devid < AB5500_NUM_DEVICES) {
1097 for (i = 0; i < ab5500_bank_ranges[devid].nbanks; i++) {
1098 if (ab5500_bank_ranges[devid].bank[i].bankid == bank)
1099 return &ab5500_bank_ranges[devid].bank[i];
1100 }
1101 }
1102 return NULL;
1103}
1104
1105static bool page_write_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg)
1106{
1107 u8 i; /* range loop index */
1108 const struct ab5500_i2c_ranges *bankref;
1109
1110 bankref = get_bankref(devid, bank);
1111 if (bankref == NULL || last_reg < first_reg)
1112 return false;
1113
1114 for (i = 0; i < bankref->nranges; i++) {
1115 if (first_reg < bankref->range[i].first)
1116 break;
1117 if ((last_reg <= bankref->range[i].last) &&
1118 (bankref->range[i].perm & AB5500_PERM_WR))
1119 return true;
1120 }
1121 return false;
1122}
1123
1124static bool reg_write_allowed(u8 devid, u8 bank, u8 reg)
1125{
1126 return page_write_allowed(devid, bank, reg, reg);
1127}
1128
1129static bool page_read_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg)
1130{
1131 u8 i;
1132 const struct ab5500_i2c_ranges *bankref;
1133
1134 bankref = get_bankref(devid, bank);
1135 if (bankref == NULL || last_reg < first_reg)
1136 return false;
1137
1138
1139 /* Find the range (if it exists in the list) that includes first_reg. */
1140 for (i = 0; i < bankref->nranges; i++) {
1141 if (first_reg < bankref->range[i].first)
1142 return false;
1143 if (first_reg <= bankref->range[i].last)
1144 break;
1145 }
1146 /* Make sure that the entire range up to and including last_reg is
1147 * readable. This may span several of the ranges in the list.
1148 */
1149 while ((i < bankref->nranges) &&
1150 (bankref->range[i].perm & AB5500_PERM_RD)) {
1151 if (last_reg <= bankref->range[i].last)
1152 return true;
1153 if ((++i >= bankref->nranges) ||
1154 (bankref->range[i].first !=
1155 (bankref->range[i - 1].last + 1))) {
1156 break;
1157 }
1158 }
1159 return false;
1160}
1161
1162static bool reg_read_allowed(u8 devid, u8 bank, u8 reg)
1163{
1164 return page_read_allowed(devid, bank, reg, reg);
1165}
1166
1167
1168/*
1169 * The exported register access functionality.
1170 */
1171static int ab5500_get_chip_id(struct device *dev)
1172{
1173 struct ab5500 *ab = dev_get_drvdata(dev->parent);
1174
1175 return (int)ab->chip_id;
1176}
1177
1178static int ab5500_mask_and_set_register_interruptible(struct device *dev,
1179 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
1180{
1181 struct ab5500 *ab;
1182 struct platform_device *pdev = to_platform_device(dev);
1183
1184 if ((AB5500_NUM_BANKS <= bank) ||
1185 !reg_write_allowed(pdev->id, bank, reg))
1186 return -EINVAL;
1187
1188 ab = dev_get_drvdata(dev->parent);
1189 return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
1190 bitmask, bitvalues);
1191}
1192
1193static int ab5500_set_register_interruptible(struct device *dev, u8 bank,
1194 u8 reg, u8 value)
1195{
1196 return ab5500_mask_and_set_register_interruptible(dev, bank, reg, 0xFF,
1197 value);
1198}
1199
1200static int ab5500_get_register_interruptible(struct device *dev, u8 bank,
1201 u8 reg, u8 *value)
1202{
1203 struct ab5500 *ab;
1204 struct platform_device *pdev = to_platform_device(dev);
1205
1206 if ((AB5500_NUM_BANKS <= bank) ||
1207 !reg_read_allowed(pdev->id, bank, reg))
1208 return -EINVAL;
1209
1210 ab = dev_get_drvdata(dev->parent);
1211 return ab5500_get_register_interruptible_raw(ab, bank, reg, value);
1212}
1213
1214static int ab5500_get_register_page_interruptible(struct device *dev, u8 bank,
1215 u8 first_reg, u8 *regvals, u8 numregs)
1216{
1217 struct ab5500 *ab;
1218 struct platform_device *pdev = to_platform_device(dev);
1219
1220 if ((AB5500_NUM_BANKS <= bank) ||
1221 !page_read_allowed(pdev->id, bank,
1222 first_reg, (first_reg + numregs - 1)))
1223 return -EINVAL;
1224
1225 ab = dev_get_drvdata(dev->parent);
1226 return get_register_page_interruptible(ab, bank, first_reg, regvals,
1227 numregs);
1228}
1229
1230static int
1231ab5500_event_registers_startup_state_get(struct device *dev, u8 *event)
1232{
1233 struct ab5500 *ab;
1234
1235 ab = dev_get_drvdata(dev->parent);
1236 if (!ab->startup_events_read)
1237 return -EAGAIN; /* Try again later */
1238
1239 memcpy(event, ab->startup_events, AB5500_NUM_EVENT_REG);
1240 return 0;
1241}
1242
1243static struct abx500_ops ab5500_ops = {
1244 .get_chip_id = ab5500_get_chip_id,
1245 .get_register = ab5500_get_register_interruptible,
1246 .set_register = ab5500_set_register_interruptible,
1247 .get_register_page = ab5500_get_register_page_interruptible,
1248 .set_register_page = NULL,
1249 .mask_and_set_register = ab5500_mask_and_set_register_interruptible,
1250 .event_registers_startup_state_get =
1251 ab5500_event_registers_startup_state_get,
1252 .startup_irq_enabled = NULL,
1253};
1254
1255/*
1256 * ab5500_setup : Basic set-up, datastructure creation/destruction
1257 * and I2C interface.This sets up a default config
1258 * in the AB5500 chip so that it will work as expected.
1259 * @ab : Pointer to ab5500 structure
1260 * @settings : Pointer to struct abx500_init_settings
1261 * @size : Size of init data
1262 */
1263static int __init ab5500_setup(struct ab5500 *ab,
1264 struct abx500_init_settings *settings, unsigned int size)
1265{
1266 int err = 0;
1267 int i;
1268
1269 for (i = 0; i < size; i++) {
1270 err = ab5500_mask_and_set_register_interruptible_raw(ab,
1271 settings[i].bank,
1272 settings[i].reg,
1273 0xFF, settings[i].setting);
1274 if (err)
1275 goto exit_no_setup;
1276
1277 /* If event mask register update the event mask in ab5500 */
1278 if ((settings[i].bank == AB5500_BANK_IT) &&
1279 (AB5500_MASK_BASE <= settings[i].reg) &&
1280 (settings[i].reg <= AB5500_MASK_END)) {
1281 ab->mask[settings[i].reg - AB5500_MASK_BASE] =
1282 settings[i].setting;
1283 }
1284 }
1285exit_no_setup:
1286 return err;
1287}
1288
1289struct ab_family_id {
1290 u8 id;
1291 char *name;
1292};
1293
1294static const struct ab_family_id ids[] __initdata = {
1295 /* AB5500 */
1296 {
1297 .id = AB5500_1_0,
1298 .name = "1.0"
1299 },
1300 {
1301 .id = AB5500_1_1,
1302 .name = "1.1"
1303 },
1304 /* Terminator */
1305 {
1306 .id = 0x00,
1307 }
1308};
1309
1310static int __init ab5500_probe(struct platform_device *pdev)
1311{
1312 struct ab5500 *ab;
1313 struct ab5500_platform_data *ab5500_plf_data =
1314 pdev->dev.platform_data;
1315 int err;
1316 int i;
1317
1318 ab = kzalloc(sizeof(struct ab5500), GFP_KERNEL);
1319 if (!ab) {
1320 dev_err(&pdev->dev,
1321 "could not allocate ab5500 device\n");
1322 return -ENOMEM;
1323 }
1324
1325 /* Initialize data structure */
1326 mutex_init(&ab->access_mutex);
1327 mutex_init(&ab->irq_lock);
1328 ab->dev = &pdev->dev;
1329
1330 platform_set_drvdata(pdev, ab);
1331
1332 /* Read chip ID register */
1333 err = ab5500_get_register_interruptible_raw(ab,
1334 AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
1335 AB5500_CHIP_ID, &ab->chip_id);
1336 if (err) {
1337 dev_err(&pdev->dev, "could not communicate with the analog "
1338 "baseband chip\n");
1339 goto exit_no_detect;
1340 }
1341
1342 for (i = 0; ids[i].id != 0x0; i++) {
1343 if (ids[i].id == ab->chip_id) {
1344 snprintf(&ab->chip_name[0], sizeof(ab->chip_name) - 1,
1345 "AB5500 %s", ids[i].name);
1346 break;
1347 }
1348 }
1349 if (ids[i].id == 0x0) {
1350 dev_err(&pdev->dev, "unknown analog baseband chip id: 0x%x\n",
1351 ab->chip_id);
1352 dev_err(&pdev->dev, "driver not started!\n");
1353 goto exit_no_detect;
1354 }
1355
1356 /* Clear and mask all interrupts */
1357 for (i = 0; i < AB5500_NUM_IRQ_REGS; i++) {
1358 u8 latchreg = AB5500_IT_LATCH0_REG + i;
1359 u8 maskreg = AB5500_IT_MASK0_REG + i;
1360 u8 val;
1361
1362 ab5500_get_register_interruptible_raw(ab, AB5500_BANK_IT,
1363 latchreg, &val);
1364 set_register_interruptible(ab, AB5500_BANK_IT, maskreg, 0xff);
1365 ab->mask[i] = ab->oldmask[i] = 0xff;
1366 }
1367
1368 err = abx500_register_ops(&pdev->dev, &ab5500_ops);
1369 if (err) {
1370 dev_err(&pdev->dev, "ab5500_register ops error\n");
1371 goto exit_no_detect;
1372 }
1373
1374 /* Set up and register the platform devices. */
1375 for (i = 0; i < AB5500_NUM_DEVICES; i++) {
1376 ab5500_devs[i].platform_data = ab5500_plf_data->dev_data[i];
1377 ab5500_devs[i].pdata_size =
1378 sizeof(ab5500_plf_data->dev_data[i]);
1379 }
1380
1381 err = mfd_add_devices(&pdev->dev, 0, ab5500_devs,
1382 ARRAY_SIZE(ab5500_devs), NULL,
1383 ab5500_plf_data->irq.base);
1384 if (err) {
1385 dev_err(&pdev->dev, "ab5500_mfd_add_device error\n");
1386 goto exit_no_detect;
1387 }
1388
1389 err = ab5500_setup(ab, ab5500_plf_data->init_settings,
1390 ab5500_plf_data->init_settings_sz);
1391 if (err) {
1392 dev_err(&pdev->dev, "ab5500_setup error\n");
1393 goto exit_no_detect;
1394 }
1395
1396 ab5500_setup_debugfs(ab);
1397
1398 dev_info(&pdev->dev, "detected AB chip: %s\n", &ab->chip_name[0]);
1399 return 0;
1400
1401exit_no_detect:
1402 kfree(ab);
1403 return err;
1404}
1405
1406static int __exit ab5500_remove(struct platform_device *pdev)
1407{
1408 struct ab5500 *ab = platform_get_drvdata(pdev);
1409
1410 ab5500_remove_debugfs();
1411 mfd_remove_devices(&pdev->dev);
1412 kfree(ab);
1413 return 0;
1414}
1415
1416static struct platform_driver ab5500_driver = {
1417 .driver = {
1418 .name = "ab5500-core",
1419 .owner = THIS_MODULE,
1420 },
1421 .remove = __exit_p(ab5500_remove),
1422};
1423
1424static int __init ab5500_core_init(void)
1425{
1426 return platform_driver_probe(&ab5500_driver, ab5500_probe);
1427}
1428
1429static void __exit ab5500_core_exit(void)
1430{
1431 platform_driver_unregister(&ab5500_driver);
1432}
1433
1434subsys_initcall(ab5500_core_init);
1435module_exit(ab5500_core_exit);
1436
1437MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
1438MODULE_DESCRIPTION("AB5500 core driver");
1439MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-01 17:01:17 -0500