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/version.h>
32 #include <linux/mfd/db5500-prcmu.h>
33
34 #include "ab5500-core.h"
35 #include "ab5500-debugfs.h"
36
37 #define AB5500_NUM_EVENT_REG 23
38 #define AB5500_IT_LATCH0_REG 0x40
39 #define AB5500_IT_MASK0_REG 0x60
40
41 /*
42 * Permissible register ranges for reading and writing per device and bank.
43 *
44 * The ranges must be listed in increasing address order, and no overlaps are
45 * allowed. It is assumed that write permission implies read permission
46 * (i.e. only RO and RW permissions should be used). Ranges with write
47 * permission must not be split up.
48 */
49
50 #define NO_RANGE {.count = 0, .range = NULL,}
51 static struct ab5500_i2c_banks ab5500_bank_ranges[AB5500_NUM_DEVICES] = {
52 [AB5500_DEVID_USB] = {
53 .nbanks = 1,
54 .bank = (struct ab5500_i2c_ranges []) {
55 {
56 .bankid = AB5500_BANK_USB,
57 .nranges = 12,
58 .range = (struct ab5500_reg_range[]) {
59 {
60 .first = 0x01,
61 .last = 0x01,
62 .perm = AB5500_PERM_RW,
63 },
64 {
65 .first = 0x80,
66 .last = 0x83,
67 .perm = AB5500_PERM_RW,
68 },
69 {
70 .first = 0x87,
71 .last = 0x8A,
72 .perm = AB5500_PERM_RW,
73 },
74 {
75 .first = 0x8B,
76 .last = 0x8B,
77 .perm = AB5500_PERM_RO,
78 },
79 {
80 .first = 0x91,
81 .last = 0x92,
82 .perm = AB5500_PERM_RO,
83 },
84 {
85 .first = 0x93,
86 .last = 0x93,
87 .perm = AB5500_PERM_RW,
88 },
89 {
90 .first = 0x94,
91 .last = 0x94,
92 .perm = AB5500_PERM_RO,
93 },
94 {
95 .first = 0xA8,
96 .last = 0xB0,
97 .perm = AB5500_PERM_RO,
98 },
99 {
100 .first = 0xB2,
101 .last = 0xB2,
102 .perm = AB5500_PERM_RO,
103 },
104 {
105 .first = 0xB4,
106 .last = 0xBC,
107 .perm = AB5500_PERM_RO,
108 },
109 {
110 .first = 0xBF,
111 .last = 0xBF,
112 .perm = AB5500_PERM_RO,
113 },
114 {
115 .first = 0xC1,
116 .last = 0xC5,
117 .perm = AB5500_PERM_RO,
118 },
119 },
120 },
121 },
122 },
123 [AB5500_DEVID_ADC] = {
124 .nbanks = 1,
125 .bank = (struct ab5500_i2c_ranges []) {
126 {
127 .bankid = AB5500_BANK_ADC,
128 .nranges = 6,
129 .range = (struct ab5500_reg_range[]) {
130 {
131 .first = 0x1F,
132 .last = 0x22,
133 .perm = AB5500_PERM_RO,
134 },
135 {
136 .first = 0x23,
137 .last = 0x24,
138 .perm = AB5500_PERM_RW,
139 },
140 {
141 .first = 0x26,
142 .last = 0x2D,
143 .perm = AB5500_PERM_RO,
144 },
145 {
146 .first = 0x2F,
147 .last = 0x34,
148 .perm = AB5500_PERM_RW,
149 },
150 {
151 .first = 0x37,
152 .last = 0x57,
153 .perm = AB5500_PERM_RW,
154 },
155 {
156 .first = 0x58,
157 .last = 0x58,
158 .perm = AB5500_PERM_RO,
159 },
160 },
161 },
162 },
163 },
164 [AB5500_DEVID_LEDS] = {
165 .nbanks = 1,
166 .bank = (struct ab5500_i2c_ranges []) {
167 {
168 .bankid = AB5500_BANK_LED,
169 .nranges = 1,
170 .range = (struct ab5500_reg_range[]) {
171 {
172 .first = 0x00,
173 .last = 0x0C,
174 .perm = AB5500_PERM_RW,
175 },
176 },
177 },
178 },
179 },
180 [AB5500_DEVID_VIDEO] = {
181 .nbanks = 1,
182 .bank = (struct ab5500_i2c_ranges []) {
183 {
184 .bankid = AB5500_BANK_VDENC,
185 .nranges = 12,
186 .range = (struct ab5500_reg_range[]) {
187 {
188 .first = 0x00,
189 .last = 0x08,
190 .perm = AB5500_PERM_RW,
191 },
192 {
193 .first = 0x09,
194 .last = 0x09,
195 .perm = AB5500_PERM_RO,
196 },
197 {
198 .first = 0x0A,
199 .last = 0x12,
200 .perm = AB5500_PERM_RW,
201 },
202 {
203 .first = 0x15,
204 .last = 0x19,
205 .perm = AB5500_PERM_RW,
206 },
207 {
208 .first = 0x1B,
209 .last = 0x21,
210 .perm = AB5500_PERM_RW,
211 },
212 {
213 .first = 0x27,
214 .last = 0x2C,
215 .perm = AB5500_PERM_RW,
216 },
217 {
218 .first = 0x41,
219 .last = 0x41,
220 .perm = AB5500_PERM_RW,
221 },
222 {
223 .first = 0x45,
224 .last = 0x5B,
225 .perm = AB5500_PERM_RW,
226 },
227 {
228 .first = 0x5D,
229 .last = 0x5D,
230 .perm = AB5500_PERM_RW,
231 },
232 {
233 .first = 0x69,
234 .last = 0x69,
235 .perm = AB5500_PERM_RW,
236 },
237 {
238 .first = 0x6C,
239 .last = 0x6D,
240 .perm = AB5500_PERM_RW,
241 },
242 {
243 .first = 0x80,
244 .last = 0x81,
245 .perm = AB5500_PERM_RW,
246 },
247 },
248 },
249 },
250 },
251 [AB5500_DEVID_REGULATORS] = {
252 .nbanks = 2,
253 .bank = (struct ab5500_i2c_ranges []) {
254 {
255 .bankid = AB5500_BANK_STARTUP,
256 .nranges = 12,
257 .range = (struct ab5500_reg_range[]) {
258 {
259 .first = 0x00,
260 .last = 0x01,
261 .perm = AB5500_PERM_RW,
262 },
263 {
264 .first = 0x1F,
265 .last = 0x1F,
266 .perm = AB5500_PERM_RW,
267 },
268 {
269 .first = 0x2E,
270 .last = 0x2E,
271 .perm = AB5500_PERM_RO,
272 },
273 {
274 .first = 0x2F,
275 .last = 0x30,
276 .perm = AB5500_PERM_RW,
277 },
278 {
279 .first = 0x50,
280 .last = 0x51,
281 .perm = AB5500_PERM_RW,
282 },
283 {
284 .first = 0x60,
285 .last = 0x61,
286 .perm = AB5500_PERM_RW,
287 },
288 {
289 .first = 0x66,
290 .last = 0x8A,
291 .perm = AB5500_PERM_RW,
292 },
293 {
294 .first = 0x8C,
295 .last = 0x96,
296 .perm = AB5500_PERM_RW,
297 },
298 {
299 .first = 0xAA,
300 .last = 0xB4,
301 .perm = AB5500_PERM_RW,
302 },
303 {
304 .first = 0xB7,
305 .last = 0xBF,
306 .perm = AB5500_PERM_RW,
307 },
308 {
309 .first = 0xC1,
310 .last = 0xCA,
311 .perm = AB5500_PERM_RW,
312 },
313 {
314 .first = 0xD3,
315 .last = 0xE0,
316 .perm = AB5500_PERM_RW,
317 },
318 },
319 },
320 {
321 .bankid = AB5500_BANK_SIM_USBSIM,
322 .nranges = 1,
323 .range = (struct ab5500_reg_range[]) {
324 {
325 .first = 0x13,
326 .last = 0x19,
327 .perm = AB5500_PERM_RW,
328 },
329 },
330 },
331 },
332 },
333 [AB5500_DEVID_SIM] = {
334 .nbanks = 1,
335 .bank = (struct ab5500_i2c_ranges []) {
336 {
337 .bankid = AB5500_BANK_SIM_USBSIM,
338 .nranges = 1,
339 .range = (struct ab5500_reg_range[]) {
340 {
341 .first = 0x13,
342 .last = 0x19,
343 .perm = AB5500_PERM_RW,
344 },
345 },
346 },
347 },
348 },
349 [AB5500_DEVID_RTC] = {
350 .nbanks = 1,
351 .bank = (struct ab5500_i2c_ranges []) {
352 {
353 .bankid = AB5500_BANK_RTC,
354 .nranges = 2,
355 .range = (struct ab5500_reg_range[]) {
356 {
357 .first = 0x00,
358 .last = 0x04,
359 .perm = AB5500_PERM_RW,
360 },
361 {
362 .first = 0x06,
363 .last = 0x0C,
364 .perm = AB5500_PERM_RW,
365 },
366 },
367 },
368 },
369 },
370 [AB5500_DEVID_CHARGER] = {
371 .nbanks = 1,
372 .bank = (struct ab5500_i2c_ranges []) {
373 {
374 .bankid = AB5500_BANK_CHG,
375 .nranges = 2,
376 .range = (struct ab5500_reg_range[]) {
377 {
378 .first = 0x11,
379 .last = 0x11,
380 .perm = AB5500_PERM_RO,
381 },
382 {
383 .first = 0x12,
384 .last = 0x1B,
385 .perm = AB5500_PERM_RW,
386 },
387 },
388 },
389 },
390 },
391 [AB5500_DEVID_FUELGAUGE] = {
392 .nbanks = 1,
393 .bank = (struct ab5500_i2c_ranges []) {
394 {
395 .bankid = AB5500_BANK_FG_BATTCOM_ACC,
396 .nranges = 2,
397 .range = (struct ab5500_reg_range[]) {
398 {
399 .first = 0x00,
400 .last = 0x0B,
401 .perm = AB5500_PERM_RO,
402 },
403 {
404 .first = 0x0C,
405 .last = 0x10,
406 .perm = AB5500_PERM_RW,
407 },
408 },
409 },
410 },
411 },
412 [AB5500_DEVID_VIBRATOR] = {
413 .nbanks = 1,
414 .bank = (struct ab5500_i2c_ranges []) {
415 {
416 .bankid = AB5500_BANK_VIBRA,
417 .nranges = 2,
418 .range = (struct ab5500_reg_range[]) {
419 {
420 .first = 0x10,
421 .last = 0x13,
422 .perm = AB5500_PERM_RW,
423 },
424 {
425 .first = 0xFE,
426 .last = 0xFE,
427 .perm = AB5500_PERM_RW,
428 },
429 },
430 },
431 },
432 },
433 [AB5500_DEVID_CODEC] = {
434 .nbanks = 1,
435 .bank = (struct ab5500_i2c_ranges []) {
436 {
437 .bankid = AB5500_BANK_AUDIO_HEADSETUSB,
438 .nranges = 2,
439 .range = (struct ab5500_reg_range[]) {
440 {
441 .first = 0x00,
442 .last = 0x48,
443 .perm = AB5500_PERM_RW,
444 },
445 {
446 .first = 0xEB,
447 .last = 0xFB,
448 .perm = AB5500_PERM_RW,
449 },
450 },
451 },
452 },
453 },
454 [AB5500_DEVID_POWER] = {
455 .nbanks = 2,
456 .bank = (struct ab5500_i2c_ranges []) {
457 {
458 .bankid = AB5500_BANK_STARTUP,
459 .nranges = 1,
460 .range = (struct ab5500_reg_range[]) {
461 {
462 .first = 0x30,
463 .last = 0x30,
464 .perm = AB5500_PERM_RW,
465 },
466 },
467 },
468 {
469 .bankid = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
470 .nranges = 1,
471 .range = (struct ab5500_reg_range[]) {
472 {
473 .first = 0x01,
474 .last = 0x01,
475 .perm = AB5500_PERM_RW,
476 },
477 },
478 },
479 },
480 },
481 };
482
483 #define AB5500_IRQ(bank, bit) ((bank) * 8 + (bit))
484
485 /* I appologize for the resource names beeing a mix of upper case
486 * and lower case but I want them to be exact as the documentation */
487 static struct mfd_cell ab5500_devs[AB5500_NUM_DEVICES] = {
488 [AB5500_DEVID_LEDS] = {
489 .name = "ab5500-leds",
490 .id = AB5500_DEVID_LEDS,
491 },
492 [AB5500_DEVID_POWER] = {
493 .name = "ab5500-power",
494 .id = AB5500_DEVID_POWER,
495 },
496 [AB5500_DEVID_REGULATORS] = {
497 .name = "ab5500-regulator",
498 .id = AB5500_DEVID_REGULATORS,
499 },
500 [AB5500_DEVID_SIM] = {
501 .name = "ab5500-sim",
502 .id = AB5500_DEVID_SIM,
503 .num_resources = 1,
504 .resources = (struct resource[]) {
505 {
506 .name = "SIMOFF",
507 .flags = IORESOURCE_IRQ,
508 .start = AB5500_IRQ(2, 0), /*rising*/
509 .end = AB5500_IRQ(2, 1), /*falling*/
510 },
511 },
512 },
513 [AB5500_DEVID_RTC] = {
514 .name = "ab5500-rtc",
515 .id = AB5500_DEVID_RTC,
516 .num_resources = 1,
517 .resources = (struct resource[]) {
518 {
519 .name = "RTC_Alarm",
520 .flags = IORESOURCE_IRQ,
521 .start = AB5500_IRQ(1, 7),
522 .end = AB5500_IRQ(1, 7),
523 }
524 },
525 },
526 [AB5500_DEVID_CHARGER] = {
527 .name = "ab5500-charger",
528 .id = AB5500_DEVID_CHARGER,
529 },
530 [AB5500_DEVID_ADC] = {
531 .name = "ab5500-adc",
532 .id = AB5500_DEVID_ADC,
533 .num_resources = 10,
534 .resources = (struct resource[]) {
535 {
536 .name = "TRIGGER-0",
537 .flags = IORESOURCE_IRQ,
538 .start = AB5500_IRQ(0, 0),
539 .end = AB5500_IRQ(0, 0),
540 },
541 {
542 .name = "TRIGGER-1",
543 .flags = IORESOURCE_IRQ,
544 .start = AB5500_IRQ(0, 1),
545 .end = AB5500_IRQ(0, 1),
546 },
547 {
548 .name = "TRIGGER-2",
549 .flags = IORESOURCE_IRQ,
550 .start = AB5500_IRQ(0, 2),
551 .end = AB5500_IRQ(0, 2),
552 },
553 {
554 .name = "TRIGGER-3",
555 .flags = IORESOURCE_IRQ,
556 .start = AB5500_IRQ(0, 3),
557 .end = AB5500_IRQ(0, 3),
558 },
559 {
560 .name = "TRIGGER-4",
561 .flags = IORESOURCE_IRQ,
562 .start = AB5500_IRQ(0, 4),
563 .end = AB5500_IRQ(0, 4),
564 },
565 {
566 .name = "TRIGGER-5",
567 .flags = IORESOURCE_IRQ,
568 .start = AB5500_IRQ(0, 5),
569 .end = AB5500_IRQ(0, 5),
570 },
571 {
572 .name = "TRIGGER-6",
573 .flags = IORESOURCE_IRQ,
574 .start = AB5500_IRQ(0, 6),
575 .end = AB5500_IRQ(0, 6),
576 },
577 {
578 .name = "TRIGGER-7",
579 .flags = IORESOURCE_IRQ,
580 .start = AB5500_IRQ(0, 7),
581 .end = AB5500_IRQ(0, 7),
582 },
583 {
584 .name = "TRIGGER-VBAT",
585 .flags = IORESOURCE_IRQ,
586 .start = AB5500_IRQ(0, 8),
587 .end = AB5500_IRQ(0, 8),
588 },
589 {
590 .name = "TRIGGER-VBAT-TXON",
591 .flags = IORESOURCE_IRQ,
592 .start = AB5500_IRQ(0, 9),
593 .end = AB5500_IRQ(0, 9),
594 },
595 },
596 },
597 [AB5500_DEVID_FUELGAUGE] = {
598 .name = "ab5500-fuelgauge",
599 .id = AB5500_DEVID_FUELGAUGE,
600 .num_resources = 6,
601 .resources = (struct resource[]) {
602 {
603 .name = "Batt_attach",
604 .flags = IORESOURCE_IRQ,
605 .start = AB5500_IRQ(7, 5),
606 .end = AB5500_IRQ(7, 5),
607 },
608 {
609 .name = "Batt_removal",
610 .flags = IORESOURCE_IRQ,
611 .start = AB5500_IRQ(7, 6),
612 .end = AB5500_IRQ(7, 6),
613 },
614 {
615 .name = "UART_framing",
616 .flags = IORESOURCE_IRQ,
617 .start = AB5500_IRQ(7, 7),
618 .end = AB5500_IRQ(7, 7),
619 },
620 {
621 .name = "UART_overrun",
622 .flags = IORESOURCE_IRQ,
623 .start = AB5500_IRQ(8, 0),
624 .end = AB5500_IRQ(8, 0),
625 },
626 {
627 .name = "UART_Rdy_RX",
628 .flags = IORESOURCE_IRQ,
629 .start = AB5500_IRQ(8, 1),
630 .end = AB5500_IRQ(8, 1),
631 },
632 {
633 .name = "UART_Rdy_TX",
634 .flags = IORESOURCE_IRQ,
635 .start = AB5500_IRQ(8, 2),
636 .end = AB5500_IRQ(8, 2),
637 },
638 },
639 },
640 [AB5500_DEVID_VIBRATOR] = {
641 .name = "ab5500-vibrator",
642 .id = AB5500_DEVID_VIBRATOR,
643 },
644 [AB5500_DEVID_CODEC] = {
645 .name = "ab5500-codec",
646 .id = AB5500_DEVID_CODEC,
647 .num_resources = 3,
648 .resources = (struct resource[]) {
649 {
650 .name = "audio_spkr1_ovc",
651 .flags = IORESOURCE_IRQ,
652 .start = AB5500_IRQ(9, 5),
653 .end = AB5500_IRQ(9, 5),
654 },
655 {
656 .name = "audio_plllocked",
657 .flags = IORESOURCE_IRQ,
658 .start = AB5500_IRQ(9, 6),
659 .end = AB5500_IRQ(9, 6),
660 },
661 {
662 .name = "audio_spkr2_ovc",
663 .flags = IORESOURCE_IRQ,
664 .start = AB5500_IRQ(17, 4),
665 .end = AB5500_IRQ(17, 4),
666 },
667 },
668 },
669 [AB5500_DEVID_USB] = {
670 .name = "ab5500-usb",
671 .id = AB5500_DEVID_USB,
672 .num_resources = 36,
673 .resources = (struct resource[]) {
674 {
675 .name = "Link_Update",
676 .flags = IORESOURCE_IRQ,
677 .start = AB5500_IRQ(22, 1),
678 .end = AB5500_IRQ(22, 1),
679 },
680 {
681 .name = "DCIO",
682 .flags = IORESOURCE_IRQ,
683 .start = AB5500_IRQ(8, 3),
684 .end = AB5500_IRQ(8, 4),
685 },
686 {
687 .name = "VBUS_R",
688 .flags = IORESOURCE_IRQ,
689 .start = AB5500_IRQ(8, 5),
690 .end = AB5500_IRQ(8, 5),
691 },
692 {
693 .name = "VBUS_F",
694 .flags = IORESOURCE_IRQ,
695 .start = AB5500_IRQ(8, 6),
696 .end = AB5500_IRQ(8, 6),
697 },
698 {
699 .name = "CHGstate_10_PCVBUSchg",
700 .flags = IORESOURCE_IRQ,
701 .start = AB5500_IRQ(8, 7),
702 .end = AB5500_IRQ(8, 7),
703 },
704 {
705 .name = "DCIOreverse_ovc",
706 .flags = IORESOURCE_IRQ,
707 .start = AB5500_IRQ(9, 0),
708 .end = AB5500_IRQ(9, 0),
709 },
710 {
711 .name = "USBCharDetDone",
712 .flags = IORESOURCE_IRQ,
713 .start = AB5500_IRQ(9, 1),
714 .end = AB5500_IRQ(9, 1),
715 },
716 {
717 .name = "DCIO_no_limit",
718 .flags = IORESOURCE_IRQ,
719 .start = AB5500_IRQ(9, 2),
720 .end = AB5500_IRQ(9, 2),
721 },
722 {
723 .name = "USB_suspend",
724 .flags = IORESOURCE_IRQ,
725 .start = AB5500_IRQ(9, 3),
726 .end = AB5500_IRQ(9, 3),
727 },
728 {
729 .name = "DCIOreverse_fwdcurrent",
730 .flags = IORESOURCE_IRQ,
731 .start = AB5500_IRQ(9, 4),
732 .end = AB5500_IRQ(9, 4),
733 },
734 {
735 .name = "Vbus_Imeasmax_change",
736 .flags = IORESOURCE_IRQ,
737 .start = AB5500_IRQ(9, 5),
738 .end = AB5500_IRQ(9, 6),
739 },
740 {
741 .name = "OVV",
742 .flags = IORESOURCE_IRQ,
743 .start = AB5500_IRQ(14, 5),
744 .end = AB5500_IRQ(14, 5),
745 },
746 {
747 .name = "USBcharging_NOTok",
748 .flags = IORESOURCE_IRQ,
749 .start = AB5500_IRQ(15, 3),
750 .end = AB5500_IRQ(15, 3),
751 },
752 {
753 .name = "usb_adp_sensoroff",
754 .flags = IORESOURCE_IRQ,
755 .start = AB5500_IRQ(15, 6),
756 .end = AB5500_IRQ(15, 6),
757 },
758 {
759 .name = "usb_adp_probeplug",
760 .flags = IORESOURCE_IRQ,
761 .start = AB5500_IRQ(15, 7),
762 .end = AB5500_IRQ(15, 7),
763 },
764 {
765 .name = "usb_adp_sinkerror",
766 .flags = IORESOURCE_IRQ,
767 .start = AB5500_IRQ(16, 0),
768 .end = AB5500_IRQ(16, 6),
769 },
770 {
771 .name = "usb_adp_sourceerror",
772 .flags = IORESOURCE_IRQ,
773 .start = AB5500_IRQ(16, 1),
774 .end = AB5500_IRQ(16, 1),
775 },
776 {
777 .name = "usb_idgnd_r",
778 .flags = IORESOURCE_IRQ,
779 .start = AB5500_IRQ(16, 2),
780 .end = AB5500_IRQ(16, 2),
781 },
782 {
783 .name = "usb_idgnd_f",
784 .flags = IORESOURCE_IRQ,
785 .start = AB5500_IRQ(16, 3),
786 .end = AB5500_IRQ(16, 3),
787 },
788 {
789 .name = "usb_iddetR1",
790 .flags = IORESOURCE_IRQ,
791 .start = AB5500_IRQ(16, 4),
792 .end = AB5500_IRQ(16, 5),
793 },
794 {
795 .name = "usb_iddetR2",
796 .flags = IORESOURCE_IRQ,
797 .start = AB5500_IRQ(16, 6),
798 .end = AB5500_IRQ(16, 7),
799 },
800 {
801 .name = "usb_iddetR3",
802 .flags = IORESOURCE_IRQ,
803 .start = AB5500_IRQ(17, 0),
804 .end = AB5500_IRQ(17, 1),
805 },
806 {
807 .name = "usb_iddetR4",
808 .flags = IORESOURCE_IRQ,
809 .start = AB5500_IRQ(17, 2),
810 .end = AB5500_IRQ(17, 3),
811 },
812 {
813 .name = "CharTempWindowOk",
814 .flags = IORESOURCE_IRQ,
815 .start = AB5500_IRQ(17, 7),
816 .end = AB5500_IRQ(18, 0),
817 },
818 {
819 .name = "USB_SprDetect",
820 .flags = IORESOURCE_IRQ,
821 .start = AB5500_IRQ(18, 1),
822 .end = AB5500_IRQ(18, 1),
823 },
824 {
825 .name = "usb_adp_probe_unplug",
826 .flags = IORESOURCE_IRQ,
827 .start = AB5500_IRQ(18, 2),
828 .end = AB5500_IRQ(18, 2),
829 },
830 {
831 .name = "VBUSChDrop",
832 .flags = IORESOURCE_IRQ,
833 .start = AB5500_IRQ(18, 3),
834 .end = AB5500_IRQ(18, 4),
835 },
836 {
837 .name = "dcio_char_rec_done",
838 .flags = IORESOURCE_IRQ,
839 .start = AB5500_IRQ(18, 5),
840 .end = AB5500_IRQ(18, 5),
841 },
842 {
843 .name = "Charging_stopped_by_temp",
844 .flags = IORESOURCE_IRQ,
845 .start = AB5500_IRQ(18, 6),
846 .end = AB5500_IRQ(18, 6),
847 },
848 {
849 .name = "CHGstate_11_SafeModeVBUS",
850 .flags = IORESOURCE_IRQ,
851 .start = AB5500_IRQ(21, 1),
852 .end = AB5500_IRQ(21, 2),
853 },
854 {
855 .name = "CHGstate_12_comletedVBUS",
856 .flags = IORESOURCE_IRQ,
857 .start = AB5500_IRQ(21, 2),
858 .end = AB5500_IRQ(21, 2),
859 },
860 {
861 .name = "CHGstate_13_completedVBUS",
862 .flags = IORESOURCE_IRQ,
863 .start = AB5500_IRQ(21, 3),
864 .end = AB5500_IRQ(21, 3),
865 },
866 {
867 .name = "CHGstate_14_FullChgDCIO",
868 .flags = IORESOURCE_IRQ,
869 .start = AB5500_IRQ(21, 4),
870 .end = AB5500_IRQ(21, 4),
871 },
872 {
873 .name = "CHGstate_15_SafeModeDCIO",
874 .flags = IORESOURCE_IRQ,
875 .start = AB5500_IRQ(21, 5),
876 .end = AB5500_IRQ(21, 5),
877 },
878 {
879 .name = "CHGstate_16_OFFsuspendDCIO",
880 .flags = IORESOURCE_IRQ,
881 .start = AB5500_IRQ(21, 6),
882 .end = AB5500_IRQ(21, 6),
883 },
884 {
885 .name = "CHGstate_17_completedDCIO",
886 .flags = IORESOURCE_IRQ,
887 .start = AB5500_IRQ(21, 7),
888 .end = AB5500_IRQ(21, 7),
889 },
890 },
891 },
892 [AB5500_DEVID_OTP] = {
893 .name = "ab5500-otp",
894 .id = AB5500_DEVID_OTP,
895 },
896 [AB5500_DEVID_VIDEO] = {
897 .name = "ab5500-video",
898 .id = AB5500_DEVID_VIDEO,
899 .num_resources = 1,
900 .resources = (struct resource[]) {
901 {
902 .name = "plugTVdet",
903 .flags = IORESOURCE_IRQ,
904 .start = AB5500_IRQ(22, 2),
905 .end = AB5500_IRQ(22, 2),
906 },
907 },
908 },
909 [AB5500_DEVID_DBIECI] = {
910 .name = "ab5500-dbieci",
911 .id = AB5500_DEVID_DBIECI,
912 .num_resources = 10,
913 .resources = (struct resource[]) {
914 {
915 .name = "COLL",
916 .flags = IORESOURCE_IRQ,
917 .start = AB5500_IRQ(14, 0),
918 .end = AB5500_IRQ(14, 0),
919 },
920 {
921 .name = "RESERR",
922 .flags = IORESOURCE_IRQ,
923 .start = AB5500_IRQ(14, 1),
924 .end = AB5500_IRQ(14, 1),
925 },
926 {
927 .name = "FRAERR",
928 .flags = IORESOURCE_IRQ,
929 .start = AB5500_IRQ(14, 2),
930 .end = AB5500_IRQ(14, 2),
931 },
932 {
933 .name = "COMERR",
934 .flags = IORESOURCE_IRQ,
935 .start = AB5500_IRQ(14, 3),
936 .end = AB5500_IRQ(14, 3),
937 },
938 {
939 .name = "BSI_indicator",
940 .flags = IORESOURCE_IRQ,
941 .start = AB5500_IRQ(14, 4),
942 .end = AB5500_IRQ(14, 4),
943 },
944 {
945 .name = "SPDSET",
946 .flags = IORESOURCE_IRQ,
947 .start = AB5500_IRQ(14, 6),
948 .end = AB5500_IRQ(14, 6),
949 },
950 {
951 .name = "DSENT",
952 .flags = IORESOURCE_IRQ,
953 .start = AB5500_IRQ(14, 7),
954 .end = AB5500_IRQ(14, 7),
955 },
956 {
957 .name = "DREC",
958 .flags = IORESOURCE_IRQ,
959 .start = AB5500_IRQ(15, 0),
960 .end = AB5500_IRQ(15, 0),
961 },
962 {
963 .name = "ACCINT",
964 .flags = IORESOURCE_IRQ,
965 .start = AB5500_IRQ(15, 1),
966 .end = AB5500_IRQ(15, 1),
967 },
968 {
969 .name = "NOPINT",
970 .flags = IORESOURCE_IRQ,
971 .start = AB5500_IRQ(15, 2),
972 .end = AB5500_IRQ(15, 2),
973 },
974 },
975 },
976 [AB5500_DEVID_ONSWA] = {
977 .name = "ab5500-onswa",
978 .id = AB5500_DEVID_ONSWA,
979 .num_resources = 2,
980 .resources = (struct resource[]) {
981 {
982 .name = "ONSWAn_rising",
983 .flags = IORESOURCE_IRQ,
984 .start = AB5500_IRQ(1, 3),
985 .end = AB5500_IRQ(1, 3),
986 },
987 {
988 .name = "ONSWAn_falling",
989 .flags = IORESOURCE_IRQ,
990 .start = AB5500_IRQ(1, 4),
991 .end = AB5500_IRQ(1, 4),
992 },
993 },
994 },
995 };
996
997 /*
998 * Functionality for getting/setting register values.
999 */
ab5500_get_register_interruptible_raw(struct ab5500 * ab,u8 bank,u8 reg,u8 * value)1000 int ab5500_get_register_interruptible_raw(struct ab5500 *ab,
1001 u8 bank, u8 reg,
1002 u8 *value)
1003 {
1004 int err;
1005
1006 if (bank >= AB5500_NUM_BANKS)
1007 return -EINVAL;
1008
1009 err = mutex_lock_interruptible(&ab->access_mutex);
1010 if (err)
1011 return err;
1012 err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr, reg, value, 1);
1013
1014 mutex_unlock(&ab->access_mutex);
1015 return err;
1016 }
1017
get_register_page_interruptible(struct ab5500 * ab,u8 bank,u8 first_reg,u8 * regvals,u8 numregs)1018 static int get_register_page_interruptible(struct ab5500 *ab, u8 bank,
1019 u8 first_reg, u8 *regvals, u8 numregs)
1020 {
1021 int err;
1022
1023 if (bank >= AB5500_NUM_BANKS)
1024 return -EINVAL;
1025
1026 err = mutex_lock_interruptible(&ab->access_mutex);
1027 if (err)
1028 return err;
1029
1030 while (numregs) {
1031 /* The hardware limit for get page is 4 */
1032 u8 curnum = min_t(u8, numregs, 4u);
1033
1034 err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr,
1035 first_reg, regvals, curnum);
1036 if (err)
1037 goto out;
1038
1039 numregs -= curnum;
1040 first_reg += curnum;
1041 regvals += curnum;
1042 }
1043
1044 out:
1045 mutex_unlock(&ab->access_mutex);
1046 return err;
1047 }
1048
ab5500_mask_and_set_register_interruptible_raw(struct ab5500 * ab,u8 bank,u8 reg,u8 bitmask,u8 bitvalues)1049 int ab5500_mask_and_set_register_interruptible_raw(struct ab5500 *ab, u8 bank,
1050 u8 reg, u8 bitmask, u8 bitvalues)
1051 {
1052 int err = 0;
1053
1054 if (bank >= AB5500_NUM_BANKS)
1055 return -EINVAL;
1056
1057 if (bitmask) {
1058 u8 buf;
1059
1060 err = mutex_lock_interruptible(&ab->access_mutex);
1061 if (err)
1062 return err;
1063
1064 if (bitmask == 0xFF) /* No need to read in this case. */
1065 buf = bitvalues;
1066 else { /* Read and modify the register value. */
1067 err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr,
1068 reg, &buf, 1);
1069 if (err)
1070 return err;
1071
1072 buf = ((~bitmask & buf) | (bitmask & bitvalues));
1073 }
1074 /* Write the new value. */
1075 err = db5500_prcmu_abb_write(bankinfo[bank].slave_addr, reg,
1076 &buf, 1);
1077
1078 mutex_unlock(&ab->access_mutex);
1079 }
1080 return err;
1081 }
1082
1083 static int
set_register_interruptible(struct ab5500 * ab,u8 bank,u8 reg,u8 value)1084 set_register_interruptible(struct ab5500 *ab, u8 bank, u8 reg, u8 value)
1085 {
1086 return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
1087 0xff, value);
1088 }
1089
1090 /*
1091 * Read/write permission checking functions.
1092 */
get_bankref(u8 devid,u8 bank)1093 static const struct ab5500_i2c_ranges *get_bankref(u8 devid, u8 bank)
1094 {
1095 u8 i;
1096
1097 if (devid < AB5500_NUM_DEVICES) {
1098 for (i = 0; i < ab5500_bank_ranges[devid].nbanks; i++) {
1099 if (ab5500_bank_ranges[devid].bank[i].bankid == bank)
1100 return &ab5500_bank_ranges[devid].bank[i];
1101 }
1102 }
1103 return NULL;
1104 }
1105
page_write_allowed(u8 devid,u8 bank,u8 first_reg,u8 last_reg)1106 static bool page_write_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg)
1107 {
1108 u8 i; /* range loop index */
1109 const struct ab5500_i2c_ranges *bankref;
1110
1111 bankref = get_bankref(devid, bank);
1112 if (bankref == NULL || last_reg < first_reg)
1113 return false;
1114
1115 for (i = 0; i < bankref->nranges; i++) {
1116 if (first_reg < bankref->range[i].first)
1117 break;
1118 if ((last_reg <= bankref->range[i].last) &&
1119 (bankref->range[i].perm & AB5500_PERM_WR))
1120 return true;
1121 }
1122 return false;
1123 }
1124
reg_write_allowed(u8 devid,u8 bank,u8 reg)1125 static bool reg_write_allowed(u8 devid, u8 bank, u8 reg)
1126 {
1127 return page_write_allowed(devid, bank, reg, reg);
1128 }
1129
page_read_allowed(u8 devid,u8 bank,u8 first_reg,u8 last_reg)1130 static bool page_read_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg)
1131 {
1132 u8 i;
1133 const struct ab5500_i2c_ranges *bankref;
1134
1135 bankref = get_bankref(devid, bank);
1136 if (bankref == NULL || last_reg < first_reg)
1137 return false;
1138
1139
1140 /* Find the range (if it exists in the list) that includes first_reg. */
1141 for (i = 0; i < bankref->nranges; i++) {
1142 if (first_reg < bankref->range[i].first)
1143 return false;
1144 if (first_reg <= bankref->range[i].last)
1145 break;
1146 }
1147 /* Make sure that the entire range up to and including last_reg is
1148 * readable. This may span several of the ranges in the list.
1149 */
1150 while ((i < bankref->nranges) &&
1151 (bankref->range[i].perm & AB5500_PERM_RD)) {
1152 if (last_reg <= bankref->range[i].last)
1153 return true;
1154 if ((++i >= bankref->nranges) ||
1155 (bankref->range[i].first !=
1156 (bankref->range[i - 1].last + 1))) {
1157 break;
1158 }
1159 }
1160 return false;
1161 }
1162
reg_read_allowed(u8 devid,u8 bank,u8 reg)1163 static bool reg_read_allowed(u8 devid, u8 bank, u8 reg)
1164 {
1165 return page_read_allowed(devid, bank, reg, reg);
1166 }
1167
1168
1169 /*
1170 * The exported register access functionality.
1171 */
ab5500_get_chip_id(struct device * dev)1172 static int ab5500_get_chip_id(struct device *dev)
1173 {
1174 struct ab5500 *ab = dev_get_drvdata(dev->parent);
1175
1176 return (int)ab->chip_id;
1177 }
1178
ab5500_mask_and_set_register_interruptible(struct device * dev,u8 bank,u8 reg,u8 bitmask,u8 bitvalues)1179 static int ab5500_mask_and_set_register_interruptible(struct device *dev,
1180 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
1181 {
1182 struct ab5500 *ab;
1183 struct platform_device *pdev = to_platform_device(dev);
1184
1185 if ((AB5500_NUM_BANKS <= bank) ||
1186 !reg_write_allowed(pdev->id, bank, reg))
1187 return -EINVAL;
1188
1189 ab = dev_get_drvdata(dev->parent);
1190 return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
1191 bitmask, bitvalues);
1192 }
1193
ab5500_set_register_interruptible(struct device * dev,u8 bank,u8 reg,u8 value)1194 static int ab5500_set_register_interruptible(struct device *dev, u8 bank,
1195 u8 reg, u8 value)
1196 {
1197 return ab5500_mask_and_set_register_interruptible(dev, bank, reg, 0xFF,
1198 value);
1199 }
1200
ab5500_get_register_interruptible(struct device * dev,u8 bank,u8 reg,u8 * value)1201 static int ab5500_get_register_interruptible(struct device *dev, u8 bank,
1202 u8 reg, u8 *value)
1203 {
1204 struct ab5500 *ab;
1205 struct platform_device *pdev = to_platform_device(dev);
1206
1207 if ((AB5500_NUM_BANKS <= bank) ||
1208 !reg_read_allowed(pdev->id, bank, reg))
1209 return -EINVAL;
1210
1211 ab = dev_get_drvdata(dev->parent);
1212 return ab5500_get_register_interruptible_raw(ab, bank, reg, value);
1213 }
1214
ab5500_get_register_page_interruptible(struct device * dev,u8 bank,u8 first_reg,u8 * regvals,u8 numregs)1215 static int ab5500_get_register_page_interruptible(struct device *dev, u8 bank,
1216 u8 first_reg, u8 *regvals, u8 numregs)
1217 {
1218 struct ab5500 *ab;
1219 struct platform_device *pdev = to_platform_device(dev);
1220
1221 if ((AB5500_NUM_BANKS <= bank) ||
1222 !page_read_allowed(pdev->id, bank,
1223 first_reg, (first_reg + numregs - 1)))
1224 return -EINVAL;
1225
1226 ab = dev_get_drvdata(dev->parent);
1227 return get_register_page_interruptible(ab, bank, first_reg, regvals,
1228 numregs);
1229 }
1230
1231 static int
ab5500_event_registers_startup_state_get(struct device * dev,u8 * event)1232 ab5500_event_registers_startup_state_get(struct device *dev, u8 *event)
1233 {
1234 struct ab5500 *ab;
1235
1236 ab = dev_get_drvdata(dev->parent);
1237 if (!ab->startup_events_read)
1238 return -EAGAIN; /* Try again later */
1239
1240 memcpy(event, ab->startup_events, AB5500_NUM_EVENT_REG);
1241 return 0;
1242 }
1243
1244 static struct abx500_ops ab5500_ops = {
1245 .get_chip_id = ab5500_get_chip_id,
1246 .get_register = ab5500_get_register_interruptible,
1247 .set_register = ab5500_set_register_interruptible,
1248 .get_register_page = ab5500_get_register_page_interruptible,
1249 .set_register_page = NULL,
1250 .mask_and_set_register = ab5500_mask_and_set_register_interruptible,
1251 .event_registers_startup_state_get =
1252 ab5500_event_registers_startup_state_get,
1253 .startup_irq_enabled = NULL,
1254 };
1255
1256 /*
1257 * ab5500_setup : Basic set-up, datastructure creation/destruction
1258 * and I2C interface.This sets up a default config
1259 * in the AB5500 chip so that it will work as expected.
1260 * @ab : Pointer to ab5500 structure
1261 * @settings : Pointer to struct abx500_init_settings
1262 * @size : Size of init data
1263 */
ab5500_setup(struct ab5500 * ab,struct abx500_init_settings * settings,unsigned int size)1264 static int __init ab5500_setup(struct ab5500 *ab,
1265 struct abx500_init_settings *settings, unsigned int size)
1266 {
1267 int err = 0;
1268 int i;
1269
1270 for (i = 0; i < size; i++) {
1271 err = ab5500_mask_and_set_register_interruptible_raw(ab,
1272 settings[i].bank,
1273 settings[i].reg,
1274 0xFF, settings[i].setting);
1275 if (err)
1276 goto exit_no_setup;
1277
1278 /* If event mask register update the event mask in ab5500 */
1279 if ((settings[i].bank == AB5500_BANK_IT) &&
1280 (AB5500_MASK_BASE <= settings[i].reg) &&
1281 (settings[i].reg <= AB5500_MASK_END)) {
1282 ab->mask[settings[i].reg - AB5500_MASK_BASE] =
1283 settings[i].setting;
1284 }
1285 }
1286 exit_no_setup:
1287 return err;
1288 }
1289
1290 struct ab_family_id {
1291 u8 id;
1292 char *name;
1293 };
1294
1295 static const struct ab_family_id ids[] __initdata = {
1296 /* AB5500 */
1297 {
1298 .id = AB5500_1_0,
1299 .name = "1.0"
1300 },
1301 {
1302 .id = AB5500_1_1,
1303 .name = "1.1"
1304 },
1305 /* Terminator */
1306 {
1307 .id = 0x00,
1308 }
1309 };
1310
ab5500_probe(struct platform_device * pdev)1311 static int __init ab5500_probe(struct platform_device *pdev)
1312 {
1313 struct ab5500 *ab;
1314 struct ab5500_platform_data *ab5500_plf_data =
1315 pdev->dev.platform_data;
1316 int err;
1317 int i;
1318
1319 ab = kzalloc(sizeof(struct ab5500), GFP_KERNEL);
1320 if (!ab) {
1321 dev_err(&pdev->dev,
1322 "could not allocate ab5500 device\n");
1323 return -ENOMEM;
1324 }
1325
1326 /* Initialize data structure */
1327 mutex_init(&ab->access_mutex);
1328 mutex_init(&ab->irq_lock);
1329 ab->dev = &pdev->dev;
1330
1331 platform_set_drvdata(pdev, ab);
1332
1333 /* Read chip ID register */
1334 err = ab5500_get_register_interruptible_raw(ab,
1335 AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
1336 AB5500_CHIP_ID, &ab->chip_id);
1337 if (err) {
1338 dev_err(&pdev->dev, "could not communicate with the analog "
1339 "baseband chip\n");
1340 goto exit_no_detect;
1341 }
1342
1343 for (i = 0; ids[i].id != 0x0; i++) {
1344 if (ids[i].id == ab->chip_id) {
1345 snprintf(&ab->chip_name[0], sizeof(ab->chip_name) - 1,
1346 "AB5500 %s", ids[i].name);
1347 break;
1348 }
1349 }
1350 if (ids[i].id == 0x0) {
1351 dev_err(&pdev->dev, "unknown analog baseband chip id: 0x%x\n",
1352 ab->chip_id);
1353 dev_err(&pdev->dev, "driver not started!\n");
1354 goto exit_no_detect;
1355 }
1356
1357 /* Clear and mask all interrupts */
1358 for (i = 0; i < AB5500_NUM_IRQ_REGS; i++) {
1359 u8 latchreg = AB5500_IT_LATCH0_REG + i;
1360 u8 maskreg = AB5500_IT_MASK0_REG + i;
1361 u8 val;
1362
1363 ab5500_get_register_interruptible_raw(ab, AB5500_BANK_IT,
1364 latchreg, &val);
1365 set_register_interruptible(ab, AB5500_BANK_IT, maskreg, 0xff);
1366 ab->mask[i] = ab->oldmask[i] = 0xff;
1367 }
1368
1369 err = abx500_register_ops(&pdev->dev, &ab5500_ops);
1370 if (err) {
1371 dev_err(&pdev->dev, "ab5500_register ops error\n");
1372 goto exit_no_detect;
1373 }
1374
1375 /* Set up and register the platform devices. */
1376 for (i = 0; i < AB5500_NUM_DEVICES; i++) {
1377 ab5500_devs[i].platform_data = ab5500_plf_data->dev_data[i];
1378 ab5500_devs[i].pdata_size =
1379 sizeof(ab5500_plf_data->dev_data[i]);
1380 }
1381
1382 err = mfd_add_devices(&pdev->dev, 0, ab5500_devs,
1383 ARRAY_SIZE(ab5500_devs), NULL,
1384 ab5500_plf_data->irq.base);
1385 if (err) {
1386 dev_err(&pdev->dev, "ab5500_mfd_add_device error\n");
1387 goto exit_no_detect;
1388 }
1389
1390 err = ab5500_setup(ab, ab5500_plf_data->init_settings,
1391 ab5500_plf_data->init_settings_sz);
1392 if (err) {
1393 dev_err(&pdev->dev, "ab5500_setup error\n");
1394 goto exit_no_detect;
1395 }
1396
1397 ab5500_setup_debugfs(ab);
1398
1399 dev_info(&pdev->dev, "detected AB chip: %s\n", &ab->chip_name[0]);
1400 return 0;
1401
1402 exit_no_detect:
1403 kfree(ab);
1404 return err;
1405 }
1406
ab5500_remove(struct platform_device * pdev)1407 static int __exit ab5500_remove(struct platform_device *pdev)
1408 {
1409 struct ab5500 *ab = platform_get_drvdata(pdev);
1410
1411 ab5500_remove_debugfs();
1412 mfd_remove_devices(&pdev->dev);
1413 kfree(ab);
1414 return 0;
1415 }
1416
1417 static struct platform_driver ab5500_driver = {
1418 .driver = {
1419 .name = "ab5500-core",
1420 .owner = THIS_MODULE,
1421 },
1422 .remove = __exit_p(ab5500_remove),
1423 };
1424
ab5500_core_init(void)1425 static int __init ab5500_core_init(void)
1426 {
1427 return platform_driver_probe(&ab5500_driver, ab5500_probe);
1428 }
1429
ab5500_core_exit(void)1430 static void __exit ab5500_core_exit(void)
1431 {
1432 platform_driver_unregister(&ab5500_driver);
1433 }
1434
1435 subsys_initcall(ab5500_core_init);
1436 module_exit(ab5500_core_exit);
1437
1438 MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
1439 MODULE_DESCRIPTION("AB5500 core driver");
1440 MODULE_LICENSE("GPL");
1441