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1/*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License v2
5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
7 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/slab.h>
12#include <linux/init.h>
13#include <linux/irq.h>
14#include <linux/delay.h>
15#include <linux/interrupt.h>
16#include <linux/module.h>
17#include <linux/platform_device.h>
18#include <linux/mfd/core.h>
19#include <linux/mfd/abx500.h>
20#include <linux/mfd/ab8500.h>
21#include <linux/regulator/ab8500.h>
22
23/*
24 * Interrupt register offsets
25 * Bank : 0x0E
26 */
27#define AB8500_IT_SOURCE1_REG 0x00
28#define AB8500_IT_SOURCE2_REG 0x01
29#define AB8500_IT_SOURCE3_REG 0x02
30#define AB8500_IT_SOURCE4_REG 0x03
31#define AB8500_IT_SOURCE5_REG 0x04
32#define AB8500_IT_SOURCE6_REG 0x05
33#define AB8500_IT_SOURCE7_REG 0x06
34#define AB8500_IT_SOURCE8_REG 0x07
35#define AB8500_IT_SOURCE19_REG 0x12
36#define AB8500_IT_SOURCE20_REG 0x13
37#define AB8500_IT_SOURCE21_REG 0x14
38#define AB8500_IT_SOURCE22_REG 0x15
39#define AB8500_IT_SOURCE23_REG 0x16
40#define AB8500_IT_SOURCE24_REG 0x17
41
42/*
43 * latch registers
44 */
45#define AB8500_IT_LATCH1_REG 0x20
46#define AB8500_IT_LATCH2_REG 0x21
47#define AB8500_IT_LATCH3_REG 0x22
48#define AB8500_IT_LATCH4_REG 0x23
49#define AB8500_IT_LATCH5_REG 0x24
50#define AB8500_IT_LATCH6_REG 0x25
51#define AB8500_IT_LATCH7_REG 0x26
52#define AB8500_IT_LATCH8_REG 0x27
53#define AB8500_IT_LATCH9_REG 0x28
54#define AB8500_IT_LATCH10_REG 0x29
55#define AB8500_IT_LATCH12_REG 0x2B
56#define AB8500_IT_LATCH19_REG 0x32
57#define AB8500_IT_LATCH20_REG 0x33
58#define AB8500_IT_LATCH21_REG 0x34
59#define AB8500_IT_LATCH22_REG 0x35
60#define AB8500_IT_LATCH23_REG 0x36
61#define AB8500_IT_LATCH24_REG 0x37
62
63/*
64 * mask registers
65 */
66
67#define AB8500_IT_MASK1_REG 0x40
68#define AB8500_IT_MASK2_REG 0x41
69#define AB8500_IT_MASK3_REG 0x42
70#define AB8500_IT_MASK4_REG 0x43
71#define AB8500_IT_MASK5_REG 0x44
72#define AB8500_IT_MASK6_REG 0x45
73#define AB8500_IT_MASK7_REG 0x46
74#define AB8500_IT_MASK8_REG 0x47
75#define AB8500_IT_MASK9_REG 0x48
76#define AB8500_IT_MASK10_REG 0x49
77#define AB8500_IT_MASK11_REG 0x4A
78#define AB8500_IT_MASK12_REG 0x4B
79#define AB8500_IT_MASK13_REG 0x4C
80#define AB8500_IT_MASK14_REG 0x4D
81#define AB8500_IT_MASK15_REG 0x4E
82#define AB8500_IT_MASK16_REG 0x4F
83#define AB8500_IT_MASK17_REG 0x50
84#define AB8500_IT_MASK18_REG 0x51
85#define AB8500_IT_MASK19_REG 0x52
86#define AB8500_IT_MASK20_REG 0x53
87#define AB8500_IT_MASK21_REG 0x54
88#define AB8500_IT_MASK22_REG 0x55
89#define AB8500_IT_MASK23_REG 0x56
90#define AB8500_IT_MASK24_REG 0x57
91
92#define AB8500_REV_REG 0x80
93#define AB8500_SWITCH_OFF_STATUS 0x00
94
95/*
96 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
97 * numbers are indexed into this array with (num / 8).
98 *
99 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
100 * offset 0.
101 */
102static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
103 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
104};
105
106static int ab8500_get_chip_id(struct device *dev)
107{
108 struct ab8500 *ab8500;
109
110 if (!dev)
111 return -EINVAL;
112 ab8500 = dev_get_drvdata(dev->parent);
113 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
114}
115
116static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
117 u8 reg, u8 data)
118{
119 int ret;
120 /*
121 * Put the u8 bank and u8 register together into a an u16.
122 * The bank on higher 8 bits and register in lower 8 bits.
123 * */
124 u16 addr = ((u16)bank) << 8 | reg;
125
126 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
127
128 ret = mutex_lock_interruptible(&ab8500->lock);
129 if (ret)
130 return ret;
131
132 ret = ab8500->write(ab8500, addr, data);
133 if (ret < 0)
134 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
135 addr, ret);
136 mutex_unlock(&ab8500->lock);
137
138 return ret;
139}
140
141static int ab8500_set_register(struct device *dev, u8 bank,
142 u8 reg, u8 value)
143{
144 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
145
146 return set_register_interruptible(ab8500, bank, reg, value);
147}
148
149static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
150 u8 reg, u8 *value)
151{
152 int ret;
153 /* put the u8 bank and u8 reg together into a an u16.
154 * bank on higher 8 bits and reg in lower */
155 u16 addr = ((u16)bank) << 8 | reg;
156
157 ret = mutex_lock_interruptible(&ab8500->lock);
158 if (ret)
159 return ret;
160
161 ret = ab8500->read(ab8500, addr);
162 if (ret < 0)
163 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
164 addr, ret);
165 else
166 *value = ret;
167
168 mutex_unlock(&ab8500->lock);
169 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
170
171 return ret;
172}
173
174static int ab8500_get_register(struct device *dev, u8 bank,
175 u8 reg, u8 *value)
176{
177 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
178
179 return get_register_interruptible(ab8500, bank, reg, value);
180}
181
182static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
183 u8 reg, u8 bitmask, u8 bitvalues)
184{
185 int ret;
186 u8 data;
187 /* put the u8 bank and u8 reg together into a an u16.
188 * bank on higher 8 bits and reg in lower */
189 u16 addr = ((u16)bank) << 8 | reg;
190
191 ret = mutex_lock_interruptible(&ab8500->lock);
192 if (ret)
193 return ret;
194
195 ret = ab8500->read(ab8500, addr);
196 if (ret < 0) {
197 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
198 addr, ret);
199 goto out;
200 }
201
202 data = (u8)ret;
203 data = (~bitmask & data) | (bitmask & bitvalues);
204
205 ret = ab8500->write(ab8500, addr, data);
206 if (ret < 0)
207 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
208 addr, ret);
209
210 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data);
211out:
212 mutex_unlock(&ab8500->lock);
213 return ret;
214}
215
216static int ab8500_mask_and_set_register(struct device *dev,
217 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
218{
219 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
220
221 return mask_and_set_register_interruptible(ab8500, bank, reg,
222 bitmask, bitvalues);
223
224}
225
226static struct abx500_ops ab8500_ops = {
227 .get_chip_id = ab8500_get_chip_id,
228 .get_register = ab8500_get_register,
229 .set_register = ab8500_set_register,
230 .get_register_page = NULL,
231 .set_register_page = NULL,
232 .mask_and_set_register = ab8500_mask_and_set_register,
233 .event_registers_startup_state_get = NULL,
234 .startup_irq_enabled = NULL,
235};
236
237static void ab8500_irq_lock(struct irq_data *data)
238{
239 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
240
241 mutex_lock(&ab8500->irq_lock);
242}
243
244static void ab8500_irq_sync_unlock(struct irq_data *data)
245{
246 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
247 int i;
248
249 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
250 u8 old = ab8500->oldmask[i];
251 u8 new = ab8500->mask[i];
252 int reg;
253
254 if (new == old)
255 continue;
256
257 /* Interrupt register 12 doesn't exist prior to version 2.0 */
258 if (ab8500_irq_regoffset[i] == 11 &&
259 ab8500->chip_id < AB8500_CUT2P0)
260 continue;
261
262 ab8500->oldmask[i] = new;
263
264 reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i];
265 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
266 }
267
268 mutex_unlock(&ab8500->irq_lock);
269}
270
271static void ab8500_irq_mask(struct irq_data *data)
272{
273 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
274 int offset = data->irq - ab8500->irq_base;
275 int index = offset / 8;
276 int mask = 1 << (offset % 8);
277
278 ab8500->mask[index] |= mask;
279}
280
281static void ab8500_irq_unmask(struct irq_data *data)
282{
283 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
284 int offset = data->irq - ab8500->irq_base;
285 int index = offset / 8;
286 int mask = 1 << (offset % 8);
287
288 ab8500->mask[index] &= ~mask;
289}
290
291static struct irq_chip ab8500_irq_chip = {
292 .name = "ab8500",
293 .irq_bus_lock = ab8500_irq_lock,
294 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
295 .irq_mask = ab8500_irq_mask,
296 .irq_unmask = ab8500_irq_unmask,
297};
298
299static irqreturn_t ab8500_irq(int irq, void *dev)
300{
301 struct ab8500 *ab8500 = dev;
302 int i;
303
304 dev_vdbg(ab8500->dev, "interrupt\n");
305
306 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
307 int regoffset = ab8500_irq_regoffset[i];
308 int status;
309 u8 value;
310
311 /* Interrupt register 12 doesn't exist prior to version 2.0 */
312 if (regoffset == 11 && ab8500->chip_id < AB8500_CUT2P0)
313 continue;
314
315 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
316 AB8500_IT_LATCH1_REG + regoffset, &value);
317 if (status < 0 || value == 0)
318 continue;
319
320 do {
321 int bit = __ffs(value);
322 int line = i * 8 + bit;
323
324 handle_nested_irq(ab8500->irq_base + line);
325 value &= ~(1 << bit);
326 } while (value);
327 }
328
329 return IRQ_HANDLED;
330}
331
332static int ab8500_irq_init(struct ab8500 *ab8500)
333{
334 int base = ab8500->irq_base;
335 int irq;
336
337 for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
338 irq_set_chip_data(irq, ab8500);
339 irq_set_chip_and_handler(irq, &ab8500_irq_chip,
340 handle_simple_irq);
341 irq_set_nested_thread(irq, 1);
342#ifdef CONFIG_ARM
343 set_irq_flags(irq, IRQF_VALID);
344#else
345 irq_set_noprobe(irq);
346#endif
347 }
348
349 return 0;
350}
351
352static void ab8500_irq_remove(struct ab8500 *ab8500)
353{
354 int base = ab8500->irq_base;
355 int irq;
356
357 for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
358#ifdef CONFIG_ARM
359 set_irq_flags(irq, 0);
360#endif
361 irq_set_chip_and_handler(irq, NULL, NULL);
362 irq_set_chip_data(irq, NULL);
363 }
364}
365
366static struct resource __devinitdata ab8500_gpio_resources[] = {
367 {
368 .name = "GPIO_INT6",
369 .start = AB8500_INT_GPIO6R,
370 .end = AB8500_INT_GPIO41F,
371 .flags = IORESOURCE_IRQ,
372 }
373};
374
375static struct resource __devinitdata ab8500_gpadc_resources[] = {
376 {
377 .name = "HW_CONV_END",
378 .start = AB8500_INT_GP_HW_ADC_CONV_END,
379 .end = AB8500_INT_GP_HW_ADC_CONV_END,
380 .flags = IORESOURCE_IRQ,
381 },
382 {
383 .name = "SW_CONV_END",
384 .start = AB8500_INT_GP_SW_ADC_CONV_END,
385 .end = AB8500_INT_GP_SW_ADC_CONV_END,
386 .flags = IORESOURCE_IRQ,
387 },
388};
389
390static struct resource __devinitdata ab8500_rtc_resources[] = {
391 {
392 .name = "60S",
393 .start = AB8500_INT_RTC_60S,
394 .end = AB8500_INT_RTC_60S,
395 .flags = IORESOURCE_IRQ,
396 },
397 {
398 .name = "ALARM",
399 .start = AB8500_INT_RTC_ALARM,
400 .end = AB8500_INT_RTC_ALARM,
401 .flags = IORESOURCE_IRQ,
402 },
403};
404
405static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
406 {
407 .name = "ONKEY_DBF",
408 .start = AB8500_INT_PON_KEY1DB_F,
409 .end = AB8500_INT_PON_KEY1DB_F,
410 .flags = IORESOURCE_IRQ,
411 },
412 {
413 .name = "ONKEY_DBR",
414 .start = AB8500_INT_PON_KEY1DB_R,
415 .end = AB8500_INT_PON_KEY1DB_R,
416 .flags = IORESOURCE_IRQ,
417 },
418};
419
420static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
421 {
422 .name = "ACC_DETECT_1DB_F",
423 .start = AB8500_INT_ACC_DETECT_1DB_F,
424 .end = AB8500_INT_ACC_DETECT_1DB_F,
425 .flags = IORESOURCE_IRQ,
426 },
427 {
428 .name = "ACC_DETECT_1DB_R",
429 .start = AB8500_INT_ACC_DETECT_1DB_R,
430 .end = AB8500_INT_ACC_DETECT_1DB_R,
431 .flags = IORESOURCE_IRQ,
432 },
433 {
434 .name = "ACC_DETECT_21DB_F",
435 .start = AB8500_INT_ACC_DETECT_21DB_F,
436 .end = AB8500_INT_ACC_DETECT_21DB_F,
437 .flags = IORESOURCE_IRQ,
438 },
439 {
440 .name = "ACC_DETECT_21DB_R",
441 .start = AB8500_INT_ACC_DETECT_21DB_R,
442 .end = AB8500_INT_ACC_DETECT_21DB_R,
443 .flags = IORESOURCE_IRQ,
444 },
445 {
446 .name = "ACC_DETECT_22DB_F",
447 .start = AB8500_INT_ACC_DETECT_22DB_F,
448 .end = AB8500_INT_ACC_DETECT_22DB_F,
449 .flags = IORESOURCE_IRQ,
450 },
451 {
452 .name = "ACC_DETECT_22DB_R",
453 .start = AB8500_INT_ACC_DETECT_22DB_R,
454 .end = AB8500_INT_ACC_DETECT_22DB_R,
455 .flags = IORESOURCE_IRQ,
456 },
457};
458
459static struct resource __devinitdata ab8500_charger_resources[] = {
460 {
461 .name = "MAIN_CH_UNPLUG_DET",
462 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
463 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
464 .flags = IORESOURCE_IRQ,
465 },
466 {
467 .name = "MAIN_CHARGE_PLUG_DET",
468 .start = AB8500_INT_MAIN_CH_PLUG_DET,
469 .end = AB8500_INT_MAIN_CH_PLUG_DET,
470 .flags = IORESOURCE_IRQ,
471 },
472 {
473 .name = "VBUS_DET_R",
474 .start = AB8500_INT_VBUS_DET_R,
475 .end = AB8500_INT_VBUS_DET_R,
476 .flags = IORESOURCE_IRQ,
477 },
478 {
479 .name = "VBUS_DET_F",
480 .start = AB8500_INT_VBUS_DET_F,
481 .end = AB8500_INT_VBUS_DET_F,
482 .flags = IORESOURCE_IRQ,
483 },
484 {
485 .name = "USB_LINK_STATUS",
486 .start = AB8500_INT_USB_LINK_STATUS,
487 .end = AB8500_INT_USB_LINK_STATUS,
488 .flags = IORESOURCE_IRQ,
489 },
490 {
491 .name = "USB_CHARGE_DET_DONE",
492 .start = AB8500_INT_USB_CHG_DET_DONE,
493 .end = AB8500_INT_USB_CHG_DET_DONE,
494 .flags = IORESOURCE_IRQ,
495 },
496 {
497 .name = "VBUS_OVV",
498 .start = AB8500_INT_VBUS_OVV,
499 .end = AB8500_INT_VBUS_OVV,
500 .flags = IORESOURCE_IRQ,
501 },
502 {
503 .name = "USB_CH_TH_PROT_R",
504 .start = AB8500_INT_USB_CH_TH_PROT_R,
505 .end = AB8500_INT_USB_CH_TH_PROT_R,
506 .flags = IORESOURCE_IRQ,
507 },
508 {
509 .name = "USB_CH_TH_PROT_F",
510 .start = AB8500_INT_USB_CH_TH_PROT_F,
511 .end = AB8500_INT_USB_CH_TH_PROT_F,
512 .flags = IORESOURCE_IRQ,
513 },
514 {
515 .name = "MAIN_EXT_CH_NOT_OK",
516 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
517 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
518 .flags = IORESOURCE_IRQ,
519 },
520 {
521 .name = "MAIN_CH_TH_PROT_R",
522 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
523 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
524 .flags = IORESOURCE_IRQ,
525 },
526 {
527 .name = "MAIN_CH_TH_PROT_F",
528 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
529 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
530 .flags = IORESOURCE_IRQ,
531 },
532 {
533 .name = "USB_CHARGER_NOT_OKR",
534 .start = AB8500_INT_USB_CHARGER_NOT_OK,
535 .end = AB8500_INT_USB_CHARGER_NOT_OK,
536 .flags = IORESOURCE_IRQ,
537 },
538 {
539 .name = "USB_CHARGER_NOT_OKF",
540 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
541 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
542 .flags = IORESOURCE_IRQ,
543 },
544 {
545 .name = "CH_WD_EXP",
546 .start = AB8500_INT_CH_WD_EXP,
547 .end = AB8500_INT_CH_WD_EXP,
548 .flags = IORESOURCE_IRQ,
549 },
550};
551
552static struct resource __devinitdata ab8500_btemp_resources[] = {
553 {
554 .name = "BAT_CTRL_INDB",
555 .start = AB8500_INT_BAT_CTRL_INDB,
556 .end = AB8500_INT_BAT_CTRL_INDB,
557 .flags = IORESOURCE_IRQ,
558 },
559 {
560 .name = "BTEMP_LOW",
561 .start = AB8500_INT_BTEMP_LOW,
562 .end = AB8500_INT_BTEMP_LOW,
563 .flags = IORESOURCE_IRQ,
564 },
565 {
566 .name = "BTEMP_HIGH",
567 .start = AB8500_INT_BTEMP_HIGH,
568 .end = AB8500_INT_BTEMP_HIGH,
569 .flags = IORESOURCE_IRQ,
570 },
571 {
572 .name = "BTEMP_LOW_MEDIUM",
573 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
574 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
575 .flags = IORESOURCE_IRQ,
576 },
577 {
578 .name = "BTEMP_MEDIUM_HIGH",
579 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
580 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
581 .flags = IORESOURCE_IRQ,
582 },
583};
584
585static struct resource __devinitdata ab8500_fg_resources[] = {
586 {
587 .name = "NCONV_ACCU",
588 .start = AB8500_INT_CCN_CONV_ACC,
589 .end = AB8500_INT_CCN_CONV_ACC,
590 .flags = IORESOURCE_IRQ,
591 },
592 {
593 .name = "BATT_OVV",
594 .start = AB8500_INT_BATT_OVV,
595 .end = AB8500_INT_BATT_OVV,
596 .flags = IORESOURCE_IRQ,
597 },
598 {
599 .name = "LOW_BAT_F",
600 .start = AB8500_INT_LOW_BAT_F,
601 .end = AB8500_INT_LOW_BAT_F,
602 .flags = IORESOURCE_IRQ,
603 },
604 {
605 .name = "LOW_BAT_R",
606 .start = AB8500_INT_LOW_BAT_R,
607 .end = AB8500_INT_LOW_BAT_R,
608 .flags = IORESOURCE_IRQ,
609 },
610 {
611 .name = "CC_INT_CALIB",
612 .start = AB8500_INT_CC_INT_CALIB,
613 .end = AB8500_INT_CC_INT_CALIB,
614 .flags = IORESOURCE_IRQ,
615 },
616};
617
618static struct resource __devinitdata ab8500_chargalg_resources[] = {};
619
620static struct resource __devinitdata ab8500_debug_resources[] = {
621 {
622 .name = "IRQ_FIRST",
623 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
624 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
625 .flags = IORESOURCE_IRQ,
626 },
627 {
628 .name = "IRQ_LAST",
629 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
630 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
631 .flags = IORESOURCE_IRQ,
632 },
633};
634
635static struct resource __devinitdata ab8500_usb_resources[] = {
636 {
637 .name = "ID_WAKEUP_R",
638 .start = AB8500_INT_ID_WAKEUP_R,
639 .end = AB8500_INT_ID_WAKEUP_R,
640 .flags = IORESOURCE_IRQ,
641 },
642 {
643 .name = "ID_WAKEUP_F",
644 .start = AB8500_INT_ID_WAKEUP_F,
645 .end = AB8500_INT_ID_WAKEUP_F,
646 .flags = IORESOURCE_IRQ,
647 },
648 {
649 .name = "VBUS_DET_F",
650 .start = AB8500_INT_VBUS_DET_F,
651 .end = AB8500_INT_VBUS_DET_F,
652 .flags = IORESOURCE_IRQ,
653 },
654 {
655 .name = "VBUS_DET_R",
656 .start = AB8500_INT_VBUS_DET_R,
657 .end = AB8500_INT_VBUS_DET_R,
658 .flags = IORESOURCE_IRQ,
659 },
660 {
661 .name = "USB_LINK_STATUS",
662 .start = AB8500_INT_USB_LINK_STATUS,
663 .end = AB8500_INT_USB_LINK_STATUS,
664 .flags = IORESOURCE_IRQ,
665 },
666 {
667 .name = "USB_ADP_PROBE_PLUG",
668 .start = AB8500_INT_ADP_PROBE_PLUG,
669 .end = AB8500_INT_ADP_PROBE_PLUG,
670 .flags = IORESOURCE_IRQ,
671 },
672 {
673 .name = "USB_ADP_PROBE_UNPLUG",
674 .start = AB8500_INT_ADP_PROBE_UNPLUG,
675 .end = AB8500_INT_ADP_PROBE_UNPLUG,
676 .flags = IORESOURCE_IRQ,
677 },
678};
679
680static struct resource __devinitdata ab8500_temp_resources[] = {
681 {
682 .name = "AB8500_TEMP_WARM",
683 .start = AB8500_INT_TEMP_WARM,
684 .end = AB8500_INT_TEMP_WARM,
685 .flags = IORESOURCE_IRQ,
686 },
687};
688
689static struct mfd_cell __devinitdata ab8500_devs[] = {
690#ifdef CONFIG_DEBUG_FS
691 {
692 .name = "ab8500-debug",
693 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
694 .resources = ab8500_debug_resources,
695 },
696#endif
697 {
698 .name = "ab8500-sysctrl",
699 },
700 {
701 .name = "ab8500-regulator",
702 },
703 {
704 .name = "ab8500-gpio",
705 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
706 .resources = ab8500_gpio_resources,
707 },
708 {
709 .name = "ab8500-gpadc",
710 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
711 .resources = ab8500_gpadc_resources,
712 },
713 {
714 .name = "ab8500-rtc",
715 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
716 .resources = ab8500_rtc_resources,
717 },
718 {
719 .name = "ab8500-charger",
720 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
721 .resources = ab8500_charger_resources,
722 },
723 {
724 .name = "ab8500-btemp",
725 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
726 .resources = ab8500_btemp_resources,
727 },
728 {
729 .name = "ab8500-fg",
730 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
731 .resources = ab8500_fg_resources,
732 },
733 {
734 .name = "ab8500-chargalg",
735 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
736 .resources = ab8500_chargalg_resources,
737 },
738 {
739 .name = "ab8500-acc-det",
740 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
741 .resources = ab8500_av_acc_detect_resources,
742 },
743 {
744 .name = "ab8500-codec",
745 },
746 {
747 .name = "ab8500-usb",
748 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
749 .resources = ab8500_usb_resources,
750 },
751 {
752 .name = "ab8500-poweron-key",
753 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
754 .resources = ab8500_poweronkey_db_resources,
755 },
756 {
757 .name = "ab8500-pwm",
758 .id = 1,
759 },
760 {
761 .name = "ab8500-pwm",
762 .id = 2,
763 },
764 {
765 .name = "ab8500-pwm",
766 .id = 3,
767 },
768 { .name = "ab8500-leds", },
769 {
770 .name = "ab8500-denc",
771 },
772 {
773 .name = "ab8500-temp",
774 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
775 .resources = ab8500_temp_resources,
776 },
777};
778
779static ssize_t show_chip_id(struct device *dev,
780 struct device_attribute *attr, char *buf)
781{
782 struct ab8500 *ab8500;
783
784 ab8500 = dev_get_drvdata(dev);
785 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
786}
787
788/*
789 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
790 * 0x01 Swoff bit programming
791 * 0x02 Thermal protection activation
792 * 0x04 Vbat lower then BattOk falling threshold
793 * 0x08 Watchdog expired
794 * 0x10 Non presence of 32kHz clock
795 * 0x20 Battery level lower than power on reset threshold
796 * 0x40 Power on key 1 pressed longer than 10 seconds
797 * 0x80 DB8500 thermal shutdown
798 */
799static ssize_t show_switch_off_status(struct device *dev,
800 struct device_attribute *attr, char *buf)
801{
802 int ret;
803 u8 value;
804 struct ab8500 *ab8500;
805
806 ab8500 = dev_get_drvdata(dev);
807 ret = get_register_interruptible(ab8500, AB8500_RTC,
808 AB8500_SWITCH_OFF_STATUS, &value);
809 if (ret < 0)
810 return ret;
811 return sprintf(buf, "%#x\n", value);
812}
813
814static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
815static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
816
817static struct attribute *ab8500_sysfs_entries[] = {
818 &dev_attr_chip_id.attr,
819 &dev_attr_switch_off_status.attr,
820 NULL,
821};
822
823static struct attribute_group ab8500_attr_group = {
824 .attrs = ab8500_sysfs_entries,
825};
826
827int __devinit ab8500_init(struct ab8500 *ab8500)
828{
829 struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
830 int ret;
831 int i;
832 u8 value;
833
834 if (plat)
835 ab8500->irq_base = plat->irq_base;
836
837 mutex_init(&ab8500->lock);
838 mutex_init(&ab8500->irq_lock);
839
840 ret = get_register_interruptible(ab8500, AB8500_MISC,
841 AB8500_REV_REG, &value);
842 if (ret < 0)
843 return ret;
844
845 switch (value) {
846 case AB8500_CUTEARLY:
847 case AB8500_CUT1P0:
848 case AB8500_CUT1P1:
849 case AB8500_CUT2P0:
850 case AB8500_CUT3P0:
851 dev_info(ab8500->dev, "detected chip, revision: %#x\n", value);
852 break;
853 default:
854 dev_err(ab8500->dev, "unknown chip, revision: %#x\n", value);
855 return -EINVAL;
856 }
857 ab8500->chip_id = value;
858
859 /*
860 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
861 * 0x01 Swoff bit programming
862 * 0x02 Thermal protection activation
863 * 0x04 Vbat lower then BattOk falling threshold
864 * 0x08 Watchdog expired
865 * 0x10 Non presence of 32kHz clock
866 * 0x20 Battery level lower than power on reset threshold
867 * 0x40 Power on key 1 pressed longer than 10 seconds
868 * 0x80 DB8500 thermal shutdown
869 */
870
871 ret = get_register_interruptible(ab8500, AB8500_RTC,
872 AB8500_SWITCH_OFF_STATUS, &value);
873 if (ret < 0)
874 return ret;
875 dev_info(ab8500->dev, "switch off status: %#x", value);
876
877 if (plat && plat->init)
878 plat->init(ab8500);
879
880 /* Clear and mask all interrupts */
881 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
882 /* Interrupt register 12 doesn't exist prior to version 2.0 */
883 if (ab8500_irq_regoffset[i] == 11 &&
884 ab8500->chip_id < AB8500_CUT2P0)
885 continue;
886
887 get_register_interruptible(ab8500, AB8500_INTERRUPT,
888 AB8500_IT_LATCH1_REG + ab8500_irq_regoffset[i],
889 &value);
890 set_register_interruptible(ab8500, AB8500_INTERRUPT,
891 AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i], 0xff);
892 }
893
894 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
895 if (ret)
896 return ret;
897
898 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++)
899 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
900
901 if (ab8500->irq_base) {
902 ret = ab8500_irq_init(ab8500);
903 if (ret)
904 return ret;
905
906 ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
907 IRQF_ONESHOT | IRQF_NO_SUSPEND,
908 "ab8500", ab8500);
909 if (ret)
910 goto out_removeirq;
911 }
912
913 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
914 ARRAY_SIZE(ab8500_devs), NULL,
915 ab8500->irq_base);
916 if (ret)
917 goto out_freeirq;
918
919 ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group);
920 if (ret)
921 dev_err(ab8500->dev, "error creating sysfs entries\n");
922
923 return ret;
924
925out_freeirq:
926 if (ab8500->irq_base) {
927 free_irq(ab8500->irq, ab8500);
928out_removeirq:
929 ab8500_irq_remove(ab8500);
930 }
931 return ret;
932}
933
934int __devexit ab8500_exit(struct ab8500 *ab8500)
935{
936 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
937 mfd_remove_devices(ab8500->dev);
938 if (ab8500->irq_base) {
939 free_irq(ab8500->irq, ab8500);
940 ab8500_irq_remove(ab8500);
941 }
942
943 return 0;
944}
945
946MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
947MODULE_DESCRIPTION("AB8500 MFD core");
948MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) ST-Ericsson SA 2010
4 *
5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
7 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/slab.h>
12#include <linux/init.h>
13#include <linux/irq.h>
14#include <linux/irqdomain.h>
15#include <linux/delay.h>
16#include <linux/interrupt.h>
17#include <linux/moduleparam.h>
18#include <linux/platform_device.h>
19#include <linux/mfd/core.h>
20#include <linux/mfd/abx500.h>
21#include <linux/mfd/abx500/ab8500.h>
22#include <linux/mfd/dbx500-prcmu.h>
23#include <linux/of.h>
24#include <linux/of_device.h>
25
26/*
27 * Interrupt register offsets
28 * Bank : 0x0E
29 */
30#define AB8500_IT_SOURCE1_REG 0x00
31#define AB8500_IT_SOURCE2_REG 0x01
32#define AB8500_IT_SOURCE3_REG 0x02
33#define AB8500_IT_SOURCE4_REG 0x03
34#define AB8500_IT_SOURCE5_REG 0x04
35#define AB8500_IT_SOURCE6_REG 0x05
36#define AB8500_IT_SOURCE7_REG 0x06
37#define AB8500_IT_SOURCE8_REG 0x07
38#define AB9540_IT_SOURCE13_REG 0x0C
39#define AB8500_IT_SOURCE19_REG 0x12
40#define AB8500_IT_SOURCE20_REG 0x13
41#define AB8500_IT_SOURCE21_REG 0x14
42#define AB8500_IT_SOURCE22_REG 0x15
43#define AB8500_IT_SOURCE23_REG 0x16
44#define AB8500_IT_SOURCE24_REG 0x17
45
46/*
47 * latch registers
48 */
49#define AB8500_IT_LATCH1_REG 0x20
50#define AB8500_IT_LATCH2_REG 0x21
51#define AB8500_IT_LATCH3_REG 0x22
52#define AB8500_IT_LATCH4_REG 0x23
53#define AB8500_IT_LATCH5_REG 0x24
54#define AB8500_IT_LATCH6_REG 0x25
55#define AB8500_IT_LATCH7_REG 0x26
56#define AB8500_IT_LATCH8_REG 0x27
57#define AB8500_IT_LATCH9_REG 0x28
58#define AB8500_IT_LATCH10_REG 0x29
59#define AB8500_IT_LATCH12_REG 0x2B
60#define AB9540_IT_LATCH13_REG 0x2C
61#define AB8500_IT_LATCH19_REG 0x32
62#define AB8500_IT_LATCH20_REG 0x33
63#define AB8500_IT_LATCH21_REG 0x34
64#define AB8500_IT_LATCH22_REG 0x35
65#define AB8500_IT_LATCH23_REG 0x36
66#define AB8500_IT_LATCH24_REG 0x37
67
68/*
69 * mask registers
70 */
71
72#define AB8500_IT_MASK1_REG 0x40
73#define AB8500_IT_MASK2_REG 0x41
74#define AB8500_IT_MASK3_REG 0x42
75#define AB8500_IT_MASK4_REG 0x43
76#define AB8500_IT_MASK5_REG 0x44
77#define AB8500_IT_MASK6_REG 0x45
78#define AB8500_IT_MASK7_REG 0x46
79#define AB8500_IT_MASK8_REG 0x47
80#define AB8500_IT_MASK9_REG 0x48
81#define AB8500_IT_MASK10_REG 0x49
82#define AB8500_IT_MASK11_REG 0x4A
83#define AB8500_IT_MASK12_REG 0x4B
84#define AB8500_IT_MASK13_REG 0x4C
85#define AB8500_IT_MASK14_REG 0x4D
86#define AB8500_IT_MASK15_REG 0x4E
87#define AB8500_IT_MASK16_REG 0x4F
88#define AB8500_IT_MASK17_REG 0x50
89#define AB8500_IT_MASK18_REG 0x51
90#define AB8500_IT_MASK19_REG 0x52
91#define AB8500_IT_MASK20_REG 0x53
92#define AB8500_IT_MASK21_REG 0x54
93#define AB8500_IT_MASK22_REG 0x55
94#define AB8500_IT_MASK23_REG 0x56
95#define AB8500_IT_MASK24_REG 0x57
96#define AB8500_IT_MASK25_REG 0x58
97
98/*
99 * latch hierarchy registers
100 */
101#define AB8500_IT_LATCHHIER1_REG 0x60
102#define AB8500_IT_LATCHHIER2_REG 0x61
103#define AB8500_IT_LATCHHIER3_REG 0x62
104#define AB8540_IT_LATCHHIER4_REG 0x63
105
106#define AB8500_IT_LATCHHIER_NUM 3
107#define AB8540_IT_LATCHHIER_NUM 4
108
109#define AB8500_REV_REG 0x80
110#define AB8500_IC_NAME_REG 0x82
111#define AB8500_SWITCH_OFF_STATUS 0x00
112
113#define AB8500_TURN_ON_STATUS 0x00
114#define AB8505_TURN_ON_STATUS_2 0x04
115
116#define AB8500_CH_USBCH_STAT1_REG 0x02
117#define VBUS_DET_DBNC100 0x02
118#define VBUS_DET_DBNC1 0x01
119
120static DEFINE_SPINLOCK(on_stat_lock);
121static u8 turn_on_stat_mask = 0xFF;
122static u8 turn_on_stat_set;
123
124#define AB9540_MODEM_CTRL2_REG 0x23
125#define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
126
127/*
128 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
129 * numbers are indexed into this array with (num / 8). The interupts are
130 * defined in linux/mfd/ab8500.h
131 *
132 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
133 * offset 0.
134 */
135/* AB8500 support */
136static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
137 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
138};
139
140/* AB9540 / AB8505 support */
141static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
142 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23
143};
144
145/* AB8540 support */
146static const int ab8540_irq_regoffset[AB8540_NUM_IRQ_REGS] = {
147 0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22,
148 23, 25, 26, 27, 28, 29, 30, 31,
149};
150
151static const char ab8500_version_str[][7] = {
152 [AB8500_VERSION_AB8500] = "AB8500",
153 [AB8500_VERSION_AB8505] = "AB8505",
154 [AB8500_VERSION_AB9540] = "AB9540",
155 [AB8500_VERSION_AB8540] = "AB8540",
156};
157
158static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
159{
160 int ret;
161
162 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
163 if (ret < 0)
164 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
165 return ret;
166}
167
168static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
169 u8 data)
170{
171 int ret;
172
173 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
174 &mask, 1);
175 if (ret < 0)
176 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
177 return ret;
178}
179
180static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
181{
182 int ret;
183 u8 data;
184
185 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
186 if (ret < 0) {
187 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
188 return ret;
189 }
190 return (int)data;
191}
192
193static int ab8500_get_chip_id(struct device *dev)
194{
195 struct ab8500 *ab8500;
196
197 if (!dev)
198 return -EINVAL;
199 ab8500 = dev_get_drvdata(dev->parent);
200 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
201}
202
203static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
204 u8 reg, u8 data)
205{
206 int ret;
207 /*
208 * Put the u8 bank and u8 register together into a an u16.
209 * The bank on higher 8 bits and register in lower 8 bits.
210 */
211 u16 addr = ((u16)bank) << 8 | reg;
212
213 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
214
215 mutex_lock(&ab8500->lock);
216
217 ret = ab8500->write(ab8500, addr, data);
218 if (ret < 0)
219 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
220 addr, ret);
221 mutex_unlock(&ab8500->lock);
222
223 return ret;
224}
225
226static int ab8500_set_register(struct device *dev, u8 bank,
227 u8 reg, u8 value)
228{
229 int ret;
230 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
231
232 atomic_inc(&ab8500->transfer_ongoing);
233 ret = set_register_interruptible(ab8500, bank, reg, value);
234 atomic_dec(&ab8500->transfer_ongoing);
235 return ret;
236}
237
238static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
239 u8 reg, u8 *value)
240{
241 int ret;
242 u16 addr = ((u16)bank) << 8 | reg;
243
244 mutex_lock(&ab8500->lock);
245
246 ret = ab8500->read(ab8500, addr);
247 if (ret < 0)
248 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
249 addr, ret);
250 else
251 *value = ret;
252
253 mutex_unlock(&ab8500->lock);
254 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
255
256 return (ret < 0) ? ret : 0;
257}
258
259static int ab8500_get_register(struct device *dev, u8 bank,
260 u8 reg, u8 *value)
261{
262 int ret;
263 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
264
265 atomic_inc(&ab8500->transfer_ongoing);
266 ret = get_register_interruptible(ab8500, bank, reg, value);
267 atomic_dec(&ab8500->transfer_ongoing);
268 return ret;
269}
270
271static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
272 u8 reg, u8 bitmask, u8 bitvalues)
273{
274 int ret;
275 u16 addr = ((u16)bank) << 8 | reg;
276
277 mutex_lock(&ab8500->lock);
278
279 if (ab8500->write_masked == NULL) {
280 u8 data;
281
282 ret = ab8500->read(ab8500, addr);
283 if (ret < 0) {
284 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
285 addr, ret);
286 goto out;
287 }
288
289 data = (u8)ret;
290 data = (~bitmask & data) | (bitmask & bitvalues);
291
292 ret = ab8500->write(ab8500, addr, data);
293 if (ret < 0)
294 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
295 addr, ret);
296
297 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
298 data);
299 goto out;
300 }
301 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
302 if (ret < 0)
303 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
304 ret);
305out:
306 mutex_unlock(&ab8500->lock);
307 return ret;
308}
309
310static int ab8500_mask_and_set_register(struct device *dev,
311 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
312{
313 int ret;
314 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
315
316 atomic_inc(&ab8500->transfer_ongoing);
317 ret = mask_and_set_register_interruptible(ab8500, bank, reg,
318 bitmask, bitvalues);
319 atomic_dec(&ab8500->transfer_ongoing);
320 return ret;
321}
322
323static struct abx500_ops ab8500_ops = {
324 .get_chip_id = ab8500_get_chip_id,
325 .get_register = ab8500_get_register,
326 .set_register = ab8500_set_register,
327 .get_register_page = NULL,
328 .set_register_page = NULL,
329 .mask_and_set_register = ab8500_mask_and_set_register,
330 .event_registers_startup_state_get = NULL,
331 .startup_irq_enabled = NULL,
332 .dump_all_banks = ab8500_dump_all_banks,
333};
334
335static void ab8500_irq_lock(struct irq_data *data)
336{
337 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
338
339 mutex_lock(&ab8500->irq_lock);
340 atomic_inc(&ab8500->transfer_ongoing);
341}
342
343static void ab8500_irq_sync_unlock(struct irq_data *data)
344{
345 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
346 int i;
347
348 for (i = 0; i < ab8500->mask_size; i++) {
349 u8 old = ab8500->oldmask[i];
350 u8 new = ab8500->mask[i];
351 int reg;
352
353 if (new == old)
354 continue;
355
356 /*
357 * Interrupt register 12 doesn't exist prior to AB8500 version
358 * 2.0
359 */
360 if (ab8500->irq_reg_offset[i] == 11 &&
361 is_ab8500_1p1_or_earlier(ab8500))
362 continue;
363
364 if (ab8500->irq_reg_offset[i] < 0)
365 continue;
366
367 ab8500->oldmask[i] = new;
368
369 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
370 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
371 }
372 atomic_dec(&ab8500->transfer_ongoing);
373 mutex_unlock(&ab8500->irq_lock);
374}
375
376static void ab8500_irq_mask(struct irq_data *data)
377{
378 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
379 int offset = data->hwirq;
380 int index = offset / 8;
381 int mask = 1 << (offset % 8);
382
383 ab8500->mask[index] |= mask;
384
385 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
386 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
387 ab8500->mask[index + 2] |= mask;
388 if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
389 ab8500->mask[index + 1] |= mask;
390 if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
391 /* Here the falling IRQ is one bit lower */
392 ab8500->mask[index] |= (mask << 1);
393}
394
395static void ab8500_irq_unmask(struct irq_data *data)
396{
397 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
398 unsigned int type = irqd_get_trigger_type(data);
399 int offset = data->hwirq;
400 int index = offset / 8;
401 int mask = 1 << (offset % 8);
402
403 if (type & IRQ_TYPE_EDGE_RISING)
404 ab8500->mask[index] &= ~mask;
405
406 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
407 if (type & IRQ_TYPE_EDGE_FALLING) {
408 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
409 ab8500->mask[index + 2] &= ~mask;
410 else if (offset >= AB9540_INT_GPIO50R &&
411 offset <= AB9540_INT_GPIO54R)
412 ab8500->mask[index + 1] &= ~mask;
413 else if (offset == AB8540_INT_GPIO43R ||
414 offset == AB8540_INT_GPIO44R)
415 /* Here the falling IRQ is one bit lower */
416 ab8500->mask[index] &= ~(mask << 1);
417 else
418 ab8500->mask[index] &= ~mask;
419 } else {
420 /* Satisfies the case where type is not set. */
421 ab8500->mask[index] &= ~mask;
422 }
423}
424
425static int ab8500_irq_set_type(struct irq_data *data, unsigned int type)
426{
427 return 0;
428}
429
430static struct irq_chip ab8500_irq_chip = {
431 .name = "ab8500",
432 .irq_bus_lock = ab8500_irq_lock,
433 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
434 .irq_mask = ab8500_irq_mask,
435 .irq_disable = ab8500_irq_mask,
436 .irq_unmask = ab8500_irq_unmask,
437 .irq_set_type = ab8500_irq_set_type,
438};
439
440static void update_latch_offset(u8 *offset, int i)
441{
442 /* Fix inconsistent ITFromLatch25 bit mapping... */
443 if (unlikely(*offset == 17))
444 *offset = 24;
445 /* Fix inconsistent ab8540 bit mapping... */
446 if (unlikely(*offset == 16))
447 *offset = 25;
448 if ((i == 3) && (*offset >= 24))
449 *offset += 2;
450}
451
452static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
453 int latch_offset, u8 latch_val)
454{
455 int int_bit, line, i;
456
457 for (i = 0; i < ab8500->mask_size; i++)
458 if (ab8500->irq_reg_offset[i] == latch_offset)
459 break;
460
461 if (i >= ab8500->mask_size) {
462 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
463 latch_offset);
464 return -ENXIO;
465 }
466
467 /* ignore masked out interrupts */
468 latch_val &= ~ab8500->mask[i];
469
470 while (latch_val) {
471 int_bit = __ffs(latch_val);
472 line = (i << 3) + int_bit;
473 latch_val &= ~(1 << int_bit);
474
475 /*
476 * This handles the falling edge hwirqs from the GPIO
477 * lines. Route them back to the line registered for the
478 * rising IRQ, as this is merely a flag for the same IRQ
479 * in linux terms.
480 */
481 if (line >= AB8500_INT_GPIO6F && line <= AB8500_INT_GPIO41F)
482 line -= 16;
483 if (line >= AB9540_INT_GPIO50F && line <= AB9540_INT_GPIO54F)
484 line -= 8;
485 if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F)
486 line += 1;
487
488 handle_nested_irq(irq_find_mapping(ab8500->domain, line));
489 }
490
491 return 0;
492}
493
494static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
495 int hier_offset, u8 hier_val)
496{
497 int latch_bit, status;
498 u8 latch_offset, latch_val;
499
500 do {
501 latch_bit = __ffs(hier_val);
502 latch_offset = (hier_offset << 3) + latch_bit;
503
504 update_latch_offset(&latch_offset, hier_offset);
505
506 status = get_register_interruptible(ab8500,
507 AB8500_INTERRUPT,
508 AB8500_IT_LATCH1_REG + latch_offset,
509 &latch_val);
510 if (status < 0 || latch_val == 0)
511 goto discard;
512
513 status = ab8500_handle_hierarchical_line(ab8500,
514 latch_offset, latch_val);
515 if (status < 0)
516 return status;
517discard:
518 hier_val &= ~(1 << latch_bit);
519 } while (hier_val);
520
521 return 0;
522}
523
524static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
525{
526 struct ab8500 *ab8500 = dev;
527 u8 i;
528
529 dev_vdbg(ab8500->dev, "interrupt\n");
530
531 /* Hierarchical interrupt version */
532 for (i = 0; i < (ab8500->it_latchhier_num); i++) {
533 int status;
534 u8 hier_val;
535
536 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
537 AB8500_IT_LATCHHIER1_REG + i, &hier_val);
538 if (status < 0 || hier_val == 0)
539 continue;
540
541 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
542 if (status < 0)
543 break;
544 }
545 return IRQ_HANDLED;
546}
547
548static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
549 irq_hw_number_t hwirq)
550{
551 struct ab8500 *ab8500 = d->host_data;
552
553 if (!ab8500)
554 return -EINVAL;
555
556 irq_set_chip_data(virq, ab8500);
557 irq_set_chip_and_handler(virq, &ab8500_irq_chip,
558 handle_simple_irq);
559 irq_set_nested_thread(virq, 1);
560 irq_set_noprobe(virq);
561
562 return 0;
563}
564
565static const struct irq_domain_ops ab8500_irq_ops = {
566 .map = ab8500_irq_map,
567 .xlate = irq_domain_xlate_twocell,
568};
569
570static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
571{
572 int num_irqs;
573
574 if (is_ab8540(ab8500))
575 num_irqs = AB8540_NR_IRQS;
576 else if (is_ab9540(ab8500))
577 num_irqs = AB9540_NR_IRQS;
578 else if (is_ab8505(ab8500))
579 num_irqs = AB8505_NR_IRQS;
580 else
581 num_irqs = AB8500_NR_IRQS;
582
583 /* If ->irq_base is zero this will give a linear mapping */
584 ab8500->domain = irq_domain_add_simple(ab8500->dev->of_node,
585 num_irqs, 0,
586 &ab8500_irq_ops, ab8500);
587
588 if (!ab8500->domain) {
589 dev_err(ab8500->dev, "Failed to create irqdomain\n");
590 return -ENODEV;
591 }
592
593 return 0;
594}
595
596int ab8500_suspend(struct ab8500 *ab8500)
597{
598 if (atomic_read(&ab8500->transfer_ongoing))
599 return -EINVAL;
600
601 return 0;
602}
603
604static const struct mfd_cell ab8500_bm_devs[] = {
605 MFD_CELL_OF("ab8500-charger", NULL, NULL, 0, 0,
606 "stericsson,ab8500-charger"),
607 MFD_CELL_OF("ab8500-btemp", NULL, NULL, 0, 0,
608 "stericsson,ab8500-btemp"),
609 MFD_CELL_OF("ab8500-fg", NULL, NULL, 0, 0,
610 "stericsson,ab8500-fg"),
611 MFD_CELL_OF("ab8500-chargalg", NULL, NULL, 0, 0,
612 "stericsson,ab8500-chargalg"),
613};
614
615static const struct mfd_cell ab8500_devs[] = {
616 MFD_CELL_OF("ab8500-sysctrl",
617 NULL, NULL, 0, 0, "stericsson,ab8500-sysctrl"),
618 MFD_CELL_OF("ab8500-ext-regulator",
619 NULL, NULL, 0, 0, "stericsson,ab8500-ext-regulator"),
620 MFD_CELL_OF("ab8500-regulator",
621 NULL, NULL, 0, 0, "stericsson,ab8500-regulator"),
622 MFD_CELL_OF("ab8500-clk",
623 NULL, NULL, 0, 0, "stericsson,ab8500-clk"),
624 MFD_CELL_OF("ab8500-gpadc",
625 NULL, NULL, 0, 0, "stericsson,ab8500-gpadc"),
626 MFD_CELL_OF("ab8500-rtc",
627 NULL, NULL, 0, 0, "stericsson,ab8500-rtc"),
628 MFD_CELL_OF("ab8500-acc-det",
629 NULL, NULL, 0, 0, "stericsson,ab8500-acc-det"),
630 MFD_CELL_OF("ab8500-poweron-key",
631 NULL, NULL, 0, 0, "stericsson,ab8500-poweron-key"),
632 MFD_CELL_OF("ab8500-pwm",
633 NULL, NULL, 0, 1, "stericsson,ab8500-pwm"),
634 MFD_CELL_OF("ab8500-pwm",
635 NULL, NULL, 0, 2, "stericsson,ab8500-pwm"),
636 MFD_CELL_OF("ab8500-pwm",
637 NULL, NULL, 0, 3, "stericsson,ab8500-pwm"),
638 MFD_CELL_OF("ab8500-denc",
639 NULL, NULL, 0, 0, "stericsson,ab8500-denc"),
640 MFD_CELL_OF("pinctrl-ab8500",
641 NULL, NULL, 0, 0, "stericsson,ab8500-gpio"),
642 MFD_CELL_OF("abx500-temp",
643 NULL, NULL, 0, 0, "stericsson,abx500-temp"),
644 MFD_CELL_OF("ab8500-usb",
645 NULL, NULL, 0, 0, "stericsson,ab8500-usb"),
646 MFD_CELL_OF("ab8500-codec",
647 NULL, NULL, 0, 0, "stericsson,ab8500-codec"),
648};
649
650static const struct mfd_cell ab9540_devs[] = {
651 {
652 .name = "ab8500-sysctrl",
653 },
654 {
655 .name = "ab8500-ext-regulator",
656 },
657 {
658 .name = "ab8500-regulator",
659 },
660 {
661 .name = "abx500-clk",
662 .of_compatible = "stericsson,abx500-clk",
663 },
664 {
665 .name = "ab8500-gpadc",
666 .of_compatible = "stericsson,ab8500-gpadc",
667 },
668 {
669 .name = "ab8500-rtc",
670 },
671 {
672 .name = "ab8500-acc-det",
673 },
674 {
675 .name = "ab8500-poweron-key",
676 },
677 {
678 .name = "ab8500-pwm",
679 .id = 1,
680 },
681 {
682 .name = "abx500-temp",
683 },
684 {
685 .name = "pinctrl-ab9540",
686 .of_compatible = "stericsson,ab9540-gpio",
687 },
688 {
689 .name = "ab9540-usb",
690 },
691 {
692 .name = "ab9540-codec",
693 },
694 {
695 .name = "ab-iddet",
696 },
697};
698
699/* Device list for ab8505 */
700static const struct mfd_cell ab8505_devs[] = {
701 {
702 .name = "ab8500-sysctrl",
703 .of_compatible = "stericsson,ab8500-sysctrl",
704 },
705 {
706 .name = "ab8500-regulator",
707 .of_compatible = "stericsson,ab8505-regulator",
708 },
709 {
710 .name = "abx500-clk",
711 .of_compatible = "stericsson,ab8500-clk",
712 },
713 {
714 .name = "ab8500-gpadc",
715 .of_compatible = "stericsson,ab8500-gpadc",
716 },
717 {
718 .name = "ab8500-rtc",
719 .of_compatible = "stericsson,ab8500-rtc",
720 },
721 {
722 .name = "ab8500-acc-det",
723 .of_compatible = "stericsson,ab8500-acc-det",
724 },
725 {
726 .name = "ab8500-poweron-key",
727 .of_compatible = "stericsson,ab8500-poweron-key",
728 },
729 {
730 .name = "ab8500-pwm",
731 .of_compatible = "stericsson,ab8500-pwm",
732 .id = 1,
733 },
734 {
735 .name = "pinctrl-ab8505",
736 .of_compatible = "stericsson,ab8505-gpio",
737 },
738 {
739 .name = "ab8500-usb",
740 .of_compatible = "stericsson,ab8500-usb",
741 },
742 {
743 .name = "ab8500-codec",
744 .of_compatible = "stericsson,ab8500-codec",
745 },
746 {
747 .name = "ab-iddet",
748 },
749};
750
751static const struct mfd_cell ab8540_devs[] = {
752 {
753 .name = "ab8500-sysctrl",
754 },
755 {
756 .name = "ab8500-ext-regulator",
757 },
758 {
759 .name = "ab8500-regulator",
760 },
761 {
762 .name = "abx500-clk",
763 .of_compatible = "stericsson,abx500-clk",
764 },
765 {
766 .name = "ab8500-gpadc",
767 .of_compatible = "stericsson,ab8500-gpadc",
768 },
769 {
770 .name = "ab8500-acc-det",
771 },
772 {
773 .name = "ab8500-poweron-key",
774 },
775 {
776 .name = "ab8500-pwm",
777 .id = 1,
778 },
779 {
780 .name = "abx500-temp",
781 },
782 {
783 .name = "pinctrl-ab8540",
784 },
785 {
786 .name = "ab8540-usb",
787 },
788 {
789 .name = "ab8540-codec",
790 },
791 {
792 .name = "ab-iddet",
793 },
794};
795
796static const struct mfd_cell ab8540_cut1_devs[] = {
797 {
798 .name = "ab8500-rtc",
799 .of_compatible = "stericsson,ab8500-rtc",
800 },
801};
802
803static const struct mfd_cell ab8540_cut2_devs[] = {
804 {
805 .name = "ab8540-rtc",
806 .of_compatible = "stericsson,ab8540-rtc",
807 },
808};
809
810static ssize_t chip_id_show(struct device *dev,
811 struct device_attribute *attr, char *buf)
812{
813 struct ab8500 *ab8500;
814
815 ab8500 = dev_get_drvdata(dev);
816
817 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
818}
819
820/*
821 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
822 * 0x01 Swoff bit programming
823 * 0x02 Thermal protection activation
824 * 0x04 Vbat lower then BattOk falling threshold
825 * 0x08 Watchdog expired
826 * 0x10 Non presence of 32kHz clock
827 * 0x20 Battery level lower than power on reset threshold
828 * 0x40 Power on key 1 pressed longer than 10 seconds
829 * 0x80 DB8500 thermal shutdown
830 */
831static ssize_t switch_off_status_show(struct device *dev,
832 struct device_attribute *attr, char *buf)
833{
834 int ret;
835 u8 value;
836 struct ab8500 *ab8500;
837
838 ab8500 = dev_get_drvdata(dev);
839 ret = get_register_interruptible(ab8500, AB8500_RTC,
840 AB8500_SWITCH_OFF_STATUS, &value);
841 if (ret < 0)
842 return ret;
843 return sprintf(buf, "%#x\n", value);
844}
845
846/* use mask and set to override the register turn_on_stat value */
847void ab8500_override_turn_on_stat(u8 mask, u8 set)
848{
849 spin_lock(&on_stat_lock);
850 turn_on_stat_mask = mask;
851 turn_on_stat_set = set;
852 spin_unlock(&on_stat_lock);
853}
854
855/*
856 * ab8500 has turned on due to (TURN_ON_STATUS):
857 * 0x01 PORnVbat
858 * 0x02 PonKey1dbF
859 * 0x04 PonKey2dbF
860 * 0x08 RTCAlarm
861 * 0x10 MainChDet
862 * 0x20 VbusDet
863 * 0x40 UsbIDDetect
864 * 0x80 Reserved
865 */
866static ssize_t turn_on_status_show(struct device *dev,
867 struct device_attribute *attr, char *buf)
868{
869 int ret;
870 u8 value;
871 struct ab8500 *ab8500;
872
873 ab8500 = dev_get_drvdata(dev);
874 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
875 AB8500_TURN_ON_STATUS, &value);
876 if (ret < 0)
877 return ret;
878
879 /*
880 * In L9540, turn_on_status register is not updated correctly if
881 * the device is rebooted with AC/USB charger connected. Due to
882 * this, the device boots android instead of entering into charge
883 * only mode. Read the AC/USB status register to detect the charger
884 * presence and update the turn on status manually.
885 */
886 if (is_ab9540(ab8500)) {
887 spin_lock(&on_stat_lock);
888 value = (value & turn_on_stat_mask) | turn_on_stat_set;
889 spin_unlock(&on_stat_lock);
890 }
891
892 return sprintf(buf, "%#x\n", value);
893}
894
895static ssize_t turn_on_status_2_show(struct device *dev,
896 struct device_attribute *attr, char *buf)
897{
898 int ret;
899 u8 value;
900 struct ab8500 *ab8500;
901
902 ab8500 = dev_get_drvdata(dev);
903 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
904 AB8505_TURN_ON_STATUS_2, &value);
905 if (ret < 0)
906 return ret;
907 return sprintf(buf, "%#x\n", (value & 0x1));
908}
909
910static ssize_t dbbrstn_show(struct device *dev,
911 struct device_attribute *attr, char *buf)
912{
913 struct ab8500 *ab8500;
914 int ret;
915 u8 value;
916
917 ab8500 = dev_get_drvdata(dev);
918
919 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
920 AB9540_MODEM_CTRL2_REG, &value);
921 if (ret < 0)
922 return ret;
923
924 return sprintf(buf, "%d\n",
925 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
926}
927
928static ssize_t dbbrstn_store(struct device *dev,
929 struct device_attribute *attr, const char *buf, size_t count)
930{
931 struct ab8500 *ab8500;
932 int ret = count;
933 int err;
934 u8 bitvalues;
935
936 ab8500 = dev_get_drvdata(dev);
937
938 if (count > 0) {
939 switch (buf[0]) {
940 case '0':
941 bitvalues = 0;
942 break;
943 case '1':
944 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
945 break;
946 default:
947 goto exit;
948 }
949
950 err = mask_and_set_register_interruptible(ab8500,
951 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
952 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
953 if (err)
954 dev_info(ab8500->dev,
955 "Failed to set DBBRSTN %c, err %#x\n",
956 buf[0], err);
957 }
958
959exit:
960 return ret;
961}
962
963static DEVICE_ATTR_RO(chip_id);
964static DEVICE_ATTR_RO(switch_off_status);
965static DEVICE_ATTR_RO(turn_on_status);
966static DEVICE_ATTR_RO(turn_on_status_2);
967static DEVICE_ATTR_RW(dbbrstn);
968
969static struct attribute *ab8500_sysfs_entries[] = {
970 &dev_attr_chip_id.attr,
971 &dev_attr_switch_off_status.attr,
972 &dev_attr_turn_on_status.attr,
973 NULL,
974};
975
976static struct attribute *ab8505_sysfs_entries[] = {
977 &dev_attr_turn_on_status_2.attr,
978 NULL,
979};
980
981static struct attribute *ab9540_sysfs_entries[] = {
982 &dev_attr_chip_id.attr,
983 &dev_attr_switch_off_status.attr,
984 &dev_attr_turn_on_status.attr,
985 &dev_attr_dbbrstn.attr,
986 NULL,
987};
988
989static const struct attribute_group ab8500_attr_group = {
990 .attrs = ab8500_sysfs_entries,
991};
992
993static const struct attribute_group ab8505_attr_group = {
994 .attrs = ab8505_sysfs_entries,
995};
996
997static const struct attribute_group ab9540_attr_group = {
998 .attrs = ab9540_sysfs_entries,
999};
1000
1001static int ab8500_probe(struct platform_device *pdev)
1002{
1003 static const char * const switch_off_status[] = {
1004 "Swoff bit programming",
1005 "Thermal protection activation",
1006 "Vbat lower then BattOk falling threshold",
1007 "Watchdog expired",
1008 "Non presence of 32kHz clock",
1009 "Battery level lower than power on reset threshold",
1010 "Power on key 1 pressed longer than 10 seconds",
1011 "DB8500 thermal shutdown"};
1012 static const char * const turn_on_status[] = {
1013 "Battery rising (Vbat)",
1014 "Power On Key 1 dbF",
1015 "Power On Key 2 dbF",
1016 "RTC Alarm",
1017 "Main Charger Detect",
1018 "Vbus Detect (USB)",
1019 "USB ID Detect",
1020 "UART Factory Mode Detect"};
1021 const struct platform_device_id *platid = platform_get_device_id(pdev);
1022 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1023 struct device_node *np = pdev->dev.of_node;
1024 struct ab8500 *ab8500;
1025 int ret;
1026 int i;
1027 int irq;
1028 u8 value;
1029
1030 ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
1031 if (!ab8500)
1032 return -ENOMEM;
1033
1034 ab8500->dev = &pdev->dev;
1035
1036 irq = platform_get_irq(pdev, 0);
1037 if (irq < 0)
1038 return irq;
1039
1040 ab8500->irq = irq;
1041
1042 ab8500->read = ab8500_prcmu_read;
1043 ab8500->write = ab8500_prcmu_write;
1044 ab8500->write_masked = ab8500_prcmu_write_masked;
1045
1046 mutex_init(&ab8500->lock);
1047 mutex_init(&ab8500->irq_lock);
1048 atomic_set(&ab8500->transfer_ongoing, 0);
1049
1050 platform_set_drvdata(pdev, ab8500);
1051
1052 if (platid)
1053 version = platid->driver_data;
1054
1055 if (version != AB8500_VERSION_UNDEFINED)
1056 ab8500->version = version;
1057 else {
1058 ret = get_register_interruptible(ab8500, AB8500_MISC,
1059 AB8500_IC_NAME_REG, &value);
1060 if (ret < 0) {
1061 dev_err(&pdev->dev, "could not probe HW\n");
1062 return ret;
1063 }
1064
1065 ab8500->version = value;
1066 }
1067
1068 ret = get_register_interruptible(ab8500, AB8500_MISC,
1069 AB8500_REV_REG, &value);
1070 if (ret < 0)
1071 return ret;
1072
1073 ab8500->chip_id = value;
1074
1075 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1076 ab8500_version_str[ab8500->version],
1077 ab8500->chip_id >> 4,
1078 ab8500->chip_id & 0x0F);
1079
1080 /* Configure AB8540 */
1081 if (is_ab8540(ab8500)) {
1082 ab8500->mask_size = AB8540_NUM_IRQ_REGS;
1083 ab8500->irq_reg_offset = ab8540_irq_regoffset;
1084 ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM;
1085 } /* Configure AB8500 or AB9540 IRQ */
1086 else if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1087 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1088 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1089 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1090 } else {
1091 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1092 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1093 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1094 }
1095 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1096 GFP_KERNEL);
1097 if (!ab8500->mask)
1098 return -ENOMEM;
1099 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1100 GFP_KERNEL);
1101 if (!ab8500->oldmask)
1102 return -ENOMEM;
1103
1104 /*
1105 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1106 * 0x01 Swoff bit programming
1107 * 0x02 Thermal protection activation
1108 * 0x04 Vbat lower then BattOk falling threshold
1109 * 0x08 Watchdog expired
1110 * 0x10 Non presence of 32kHz clock
1111 * 0x20 Battery level lower than power on reset threshold
1112 * 0x40 Power on key 1 pressed longer than 10 seconds
1113 * 0x80 DB8500 thermal shutdown
1114 */
1115
1116 ret = get_register_interruptible(ab8500, AB8500_RTC,
1117 AB8500_SWITCH_OFF_STATUS, &value);
1118 if (ret < 0)
1119 return ret;
1120 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1121
1122 if (value) {
1123 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1124 if (value & 1)
1125 pr_cont(" \"%s\"", switch_off_status[i]);
1126 value = value >> 1;
1127
1128 }
1129 pr_cont("\n");
1130 } else {
1131 pr_cont(" None\n");
1132 }
1133 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1134 AB8500_TURN_ON_STATUS, &value);
1135 if (ret < 0)
1136 return ret;
1137 dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value);
1138
1139 if (value) {
1140 for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) {
1141 if (value & 1)
1142 pr_cont("\"%s\" ", turn_on_status[i]);
1143 value = value >> 1;
1144 }
1145 pr_cont("\n");
1146 } else {
1147 pr_cont("None\n");
1148 }
1149
1150 if (is_ab9540(ab8500)) {
1151 ret = get_register_interruptible(ab8500, AB8500_CHARGER,
1152 AB8500_CH_USBCH_STAT1_REG, &value);
1153 if (ret < 0)
1154 return ret;
1155 if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100))
1156 ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
1157 AB8500_VBUS_DET);
1158 }
1159
1160 /* Clear and mask all interrupts */
1161 for (i = 0; i < ab8500->mask_size; i++) {
1162 /*
1163 * Interrupt register 12 doesn't exist prior to AB8500 version
1164 * 2.0
1165 */
1166 if (ab8500->irq_reg_offset[i] == 11 &&
1167 is_ab8500_1p1_or_earlier(ab8500))
1168 continue;
1169
1170 if (ab8500->irq_reg_offset[i] < 0)
1171 continue;
1172
1173 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1174 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1175 &value);
1176 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1177 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1178 }
1179
1180 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1181 if (ret)
1182 return ret;
1183
1184 for (i = 0; i < ab8500->mask_size; i++)
1185 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1186
1187 ret = ab8500_irq_init(ab8500, np);
1188 if (ret)
1189 return ret;
1190
1191 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1192 ab8500_hierarchical_irq,
1193 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1194 "ab8500", ab8500);
1195 if (ret)
1196 return ret;
1197
1198 if (is_ab9540(ab8500))
1199 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1200 ARRAY_SIZE(ab9540_devs), NULL,
1201 0, ab8500->domain);
1202 else if (is_ab8540(ab8500)) {
1203 ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
1204 ARRAY_SIZE(ab8540_devs), NULL,
1205 0, ab8500->domain);
1206 if (ret)
1207 return ret;
1208
1209 if (is_ab8540_1p2_or_earlier(ab8500))
1210 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut1_devs,
1211 ARRAY_SIZE(ab8540_cut1_devs), NULL,
1212 0, ab8500->domain);
1213 else /* ab8540 >= cut2 */
1214 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut2_devs,
1215 ARRAY_SIZE(ab8540_cut2_devs), NULL,
1216 0, ab8500->domain);
1217 } else if (is_ab8505(ab8500))
1218 ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
1219 ARRAY_SIZE(ab8505_devs), NULL,
1220 0, ab8500->domain);
1221 else
1222 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1223 ARRAY_SIZE(ab8500_devs), NULL,
1224 0, ab8500->domain);
1225 if (ret)
1226 return ret;
1227
1228 /* Add battery management devices */
1229 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1230 ARRAY_SIZE(ab8500_bm_devs), NULL,
1231 0, ab8500->domain);
1232 if (ret)
1233 dev_err(ab8500->dev, "error adding bm devices\n");
1234
1235 if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1236 ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
1237 ret = sysfs_create_group(&ab8500->dev->kobj,
1238 &ab9540_attr_group);
1239 else
1240 ret = sysfs_create_group(&ab8500->dev->kobj,
1241 &ab8500_attr_group);
1242
1243 if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1244 ab8500->chip_id >= AB8500_CUT2P0)
1245 ret = sysfs_create_group(&ab8500->dev->kobj,
1246 &ab8505_attr_group);
1247
1248 if (ret)
1249 dev_err(ab8500->dev, "error creating sysfs entries\n");
1250
1251 return ret;
1252}
1253
1254static const struct platform_device_id ab8500_id[] = {
1255 { "ab8500-core", AB8500_VERSION_AB8500 },
1256 { "ab8505-core", AB8500_VERSION_AB8505 },
1257 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1258 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1259 { }
1260};
1261
1262static struct platform_driver ab8500_core_driver = {
1263 .driver = {
1264 .name = "ab8500-core",
1265 .suppress_bind_attrs = true,
1266 },
1267 .probe = ab8500_probe,
1268 .id_table = ab8500_id,
1269};
1270
1271static int __init ab8500_core_init(void)
1272{
1273 return platform_driver_register(&ab8500_core_driver);
1274}
1275core_initcall(ab8500_core_init);