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