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mfd: ab8500: actually handle the AB8500 GPIO IRQs correctly
[mirror_ubuntu-eoan-kernel.git] / drivers / mfd / ab8500-core.c
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/irqdomain.h>
15 #include <linux/delay.h>
16 #include <linux/interrupt.h>
17 #include <linux/module.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/abx500/ab8500-bm.h>
23 #include <linux/mfd/dbx500-prcmu.h>
24 #include <linux/regulator/ab8500.h>
25 #include <linux/of.h>
26 #include <linux/of_device.h>
27
28 /*
29 * Interrupt register offsets
30 * Bank : 0x0E
31 */
32 #define AB8500_IT_SOURCE1_REG 0x00
33 #define AB8500_IT_SOURCE2_REG 0x01
34 #define AB8500_IT_SOURCE3_REG 0x02
35 #define AB8500_IT_SOURCE4_REG 0x03
36 #define AB8500_IT_SOURCE5_REG 0x04
37 #define AB8500_IT_SOURCE6_REG 0x05
38 #define AB8500_IT_SOURCE7_REG 0x06
39 #define AB8500_IT_SOURCE8_REG 0x07
40 #define AB9540_IT_SOURCE13_REG 0x0C
41 #define AB8500_IT_SOURCE19_REG 0x12
42 #define AB8500_IT_SOURCE20_REG 0x13
43 #define AB8500_IT_SOURCE21_REG 0x14
44 #define AB8500_IT_SOURCE22_REG 0x15
45 #define AB8500_IT_SOURCE23_REG 0x16
46 #define AB8500_IT_SOURCE24_REG 0x17
47
48 /*
49 * latch registers
50 */
51 #define AB8500_IT_LATCH1_REG 0x20
52 #define AB8500_IT_LATCH2_REG 0x21
53 #define AB8500_IT_LATCH3_REG 0x22
54 #define AB8500_IT_LATCH4_REG 0x23
55 #define AB8500_IT_LATCH5_REG 0x24
56 #define AB8500_IT_LATCH6_REG 0x25
57 #define AB8500_IT_LATCH7_REG 0x26
58 #define AB8500_IT_LATCH8_REG 0x27
59 #define AB8500_IT_LATCH9_REG 0x28
60 #define AB8500_IT_LATCH10_REG 0x29
61 #define AB8500_IT_LATCH12_REG 0x2B
62 #define AB9540_IT_LATCH13_REG 0x2C
63 #define AB8500_IT_LATCH19_REG 0x32
64 #define AB8500_IT_LATCH20_REG 0x33
65 #define AB8500_IT_LATCH21_REG 0x34
66 #define AB8500_IT_LATCH22_REG 0x35
67 #define AB8500_IT_LATCH23_REG 0x36
68 #define AB8500_IT_LATCH24_REG 0x37
69
70 /*
71 * mask registers
72 */
73
74 #define AB8500_IT_MASK1_REG 0x40
75 #define AB8500_IT_MASK2_REG 0x41
76 #define AB8500_IT_MASK3_REG 0x42
77 #define AB8500_IT_MASK4_REG 0x43
78 #define AB8500_IT_MASK5_REG 0x44
79 #define AB8500_IT_MASK6_REG 0x45
80 #define AB8500_IT_MASK7_REG 0x46
81 #define AB8500_IT_MASK8_REG 0x47
82 #define AB8500_IT_MASK9_REG 0x48
83 #define AB8500_IT_MASK10_REG 0x49
84 #define AB8500_IT_MASK11_REG 0x4A
85 #define AB8500_IT_MASK12_REG 0x4B
86 #define AB8500_IT_MASK13_REG 0x4C
87 #define AB8500_IT_MASK14_REG 0x4D
88 #define AB8500_IT_MASK15_REG 0x4E
89 #define AB8500_IT_MASK16_REG 0x4F
90 #define AB8500_IT_MASK17_REG 0x50
91 #define AB8500_IT_MASK18_REG 0x51
92 #define AB8500_IT_MASK19_REG 0x52
93 #define AB8500_IT_MASK20_REG 0x53
94 #define AB8500_IT_MASK21_REG 0x54
95 #define AB8500_IT_MASK22_REG 0x55
96 #define AB8500_IT_MASK23_REG 0x56
97 #define AB8500_IT_MASK24_REG 0x57
98
99 /*
100 * latch hierarchy registers
101 */
102 #define AB8500_IT_LATCHHIER1_REG 0x60
103 #define AB8500_IT_LATCHHIER2_REG 0x61
104 #define AB8500_IT_LATCHHIER3_REG 0x62
105
106 #define AB8500_IT_LATCHHIER_NUM 3
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
114 static bool no_bm; /* No battery management */
115 module_param(no_bm, bool, S_IRUGO);
116
117 #define AB9540_MODEM_CTRL2_REG 0x23
118 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
119
120 /*
121 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
122 * numbers are indexed into this array with (num / 8). The interupts are
123 * defined in linux/mfd/ab8500.h
124 *
125 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
126 * offset 0.
127 */
128 /* AB8500 support */
129 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
130 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
131 };
132
133 /* AB9540 support */
134 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
135 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
136 };
137
138 static const char ab8500_version_str[][7] = {
139 [AB8500_VERSION_AB8500] = "AB8500",
140 [AB8500_VERSION_AB8505] = "AB8505",
141 [AB8500_VERSION_AB9540] = "AB9540",
142 [AB8500_VERSION_AB8540] = "AB8540",
143 };
144
145 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
146 {
147 int ret;
148
149 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
150 if (ret < 0)
151 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
152 return ret;
153 }
154
155 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
156 u8 data)
157 {
158 int ret;
159
160 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
161 &mask, 1);
162 if (ret < 0)
163 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
164 return ret;
165 }
166
167 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
168 {
169 int ret;
170 u8 data;
171
172 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
173 if (ret < 0) {
174 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
175 return ret;
176 }
177 return (int)data;
178 }
179
180 static int ab8500_get_chip_id(struct device *dev)
181 {
182 struct ab8500 *ab8500;
183
184 if (!dev)
185 return -EINVAL;
186 ab8500 = dev_get_drvdata(dev->parent);
187 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
188 }
189
190 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
191 u8 reg, u8 data)
192 {
193 int ret;
194 /*
195 * Put the u8 bank and u8 register together into a an u16.
196 * The bank on higher 8 bits and register in lower 8 bits.
197 * */
198 u16 addr = ((u16)bank) << 8 | reg;
199
200 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
201
202 mutex_lock(&ab8500->lock);
203
204 ret = ab8500->write(ab8500, addr, data);
205 if (ret < 0)
206 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
207 addr, ret);
208 mutex_unlock(&ab8500->lock);
209
210 return ret;
211 }
212
213 static int ab8500_set_register(struct device *dev, u8 bank,
214 u8 reg, u8 value)
215 {
216 int ret;
217 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
218
219 atomic_inc(&ab8500->transfer_ongoing);
220 ret = set_register_interruptible(ab8500, bank, reg, value);
221 atomic_dec(&ab8500->transfer_ongoing);
222 return ret;
223 }
224
225 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
226 u8 reg, u8 *value)
227 {
228 int ret;
229 /* put the u8 bank and u8 reg together into a an u16.
230 * bank on higher 8 bits and reg in lower */
231 u16 addr = ((u16)bank) << 8 | reg;
232
233 mutex_lock(&ab8500->lock);
234
235 ret = ab8500->read(ab8500, addr);
236 if (ret < 0)
237 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
238 addr, ret);
239 else
240 *value = ret;
241
242 mutex_unlock(&ab8500->lock);
243 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
244
245 return ret;
246 }
247
248 static int ab8500_get_register(struct device *dev, u8 bank,
249 u8 reg, u8 *value)
250 {
251 int ret;
252 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
253
254 atomic_inc(&ab8500->transfer_ongoing);
255 ret = get_register_interruptible(ab8500, bank, reg, value);
256 atomic_dec(&ab8500->transfer_ongoing);
257 return ret;
258 }
259
260 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
261 u8 reg, u8 bitmask, u8 bitvalues)
262 {
263 int ret;
264 /* put the u8 bank and u8 reg together into a an u16.
265 * bank on higher 8 bits and reg in lower */
266 u16 addr = ((u16)bank) << 8 | reg;
267
268 mutex_lock(&ab8500->lock);
269
270 if (ab8500->write_masked == NULL) {
271 u8 data;
272
273 ret = ab8500->read(ab8500, addr);
274 if (ret < 0) {
275 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
276 addr, ret);
277 goto out;
278 }
279
280 data = (u8)ret;
281 data = (~bitmask & data) | (bitmask & bitvalues);
282
283 ret = ab8500->write(ab8500, addr, data);
284 if (ret < 0)
285 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
286 addr, ret);
287
288 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
289 data);
290 goto out;
291 }
292 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
293 if (ret < 0)
294 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
295 ret);
296 out:
297 mutex_unlock(&ab8500->lock);
298 return ret;
299 }
300
301 static int ab8500_mask_and_set_register(struct device *dev,
302 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
303 {
304 int ret;
305 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
306
307 atomic_inc(&ab8500->transfer_ongoing);
308 ret= mask_and_set_register_interruptible(ab8500, bank, reg,
309 bitmask, bitvalues);
310 atomic_dec(&ab8500->transfer_ongoing);
311 return ret;
312 }
313
314 static struct abx500_ops ab8500_ops = {
315 .get_chip_id = ab8500_get_chip_id,
316 .get_register = ab8500_get_register,
317 .set_register = ab8500_set_register,
318 .get_register_page = NULL,
319 .set_register_page = NULL,
320 .mask_and_set_register = ab8500_mask_and_set_register,
321 .event_registers_startup_state_get = NULL,
322 .startup_irq_enabled = NULL,
323 };
324
325 static void ab8500_irq_lock(struct irq_data *data)
326 {
327 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
328
329 mutex_lock(&ab8500->irq_lock);
330 atomic_inc(&ab8500->transfer_ongoing);
331 }
332
333 static void ab8500_irq_sync_unlock(struct irq_data *data)
334 {
335 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
336 int i;
337
338 for (i = 0; i < ab8500->mask_size; i++) {
339 u8 old = ab8500->oldmask[i];
340 u8 new = ab8500->mask[i];
341 int reg;
342
343 if (new == old)
344 continue;
345
346 /*
347 * Interrupt register 12 doesn't exist prior to AB8500 version
348 * 2.0
349 */
350 if (ab8500->irq_reg_offset[i] == 11 &&
351 is_ab8500_1p1_or_earlier(ab8500))
352 continue;
353
354 ab8500->oldmask[i] = new;
355
356 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
357 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
358 }
359 atomic_dec(&ab8500->transfer_ongoing);
360 mutex_unlock(&ab8500->irq_lock);
361 }
362
363 static void ab8500_irq_mask(struct irq_data *data)
364 {
365 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
366 int offset = data->hwirq;
367 int index = offset / 8;
368 int mask = 1 << (offset % 8);
369
370 ab8500->mask[index] |= mask;
371
372 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
373 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
374 ab8500->mask[index + 2] |= mask;
375 if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
376 ab8500->mask[index + 1] |= mask;
377 if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
378 /* Here the falling IRQ is one bit lower */
379 ab8500->mask[index] |= (mask << 1);
380 }
381
382 static void ab8500_irq_unmask(struct irq_data *data)
383 {
384 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
385 unsigned int type = irqd_get_trigger_type(data);
386 int offset = data->hwirq;
387 int index = offset / 8;
388 int mask = 1 << (offset % 8);
389
390 if (type & IRQ_TYPE_EDGE_RISING)
391 ab8500->mask[index] &= ~mask;
392
393 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
394 if (type & IRQ_TYPE_EDGE_FALLING) {
395 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
396 ab8500->mask[index + 2] &= ~mask;
397 else if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
398 ab8500->mask[index + 1] &= ~mask;
399 else if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
400 /* Here the falling IRQ is one bit lower */
401 ab8500->mask[index] &= ~(mask << 1);
402 else
403 ab8500->mask[index] &= ~mask;
404 } else {
405 /* Satisfies the case where type is not set. */
406 ab8500->mask[index] &= ~mask;
407 }
408 }
409
410 static struct irq_chip ab8500_irq_chip = {
411 .name = "ab8500",
412 .irq_bus_lock = ab8500_irq_lock,
413 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
414 .irq_mask = ab8500_irq_mask,
415 .irq_disable = ab8500_irq_mask,
416 .irq_unmask = ab8500_irq_unmask,
417 };
418
419 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
420 int latch_offset, u8 latch_val)
421 {
422 int int_bit = __ffs(latch_val);
423 int line, i;
424
425 do {
426 int_bit = __ffs(latch_val);
427
428 for (i = 0; i < ab8500->mask_size; i++)
429 if (ab8500->irq_reg_offset[i] == latch_offset)
430 break;
431
432 if (i >= ab8500->mask_size) {
433 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
434 latch_offset);
435 return -ENXIO;
436 }
437
438 line = (i << 3) + int_bit;
439 latch_val &= ~(1 << int_bit);
440
441 /*
442 * This handles the falling edge hwirqs from the GPIO
443 * lines. Route them back to the line registered for the
444 * rising IRQ, as this is merely a flag for the same IRQ
445 * in linux terms.
446 */
447 if (line >= AB8500_INT_GPIO6F && line <= AB8500_INT_GPIO41F)
448 line -= 16;
449 if (line >= AB9540_INT_GPIO50F && line <= AB9540_INT_GPIO54F)
450 line -= 8;
451 if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F)
452 line += 1;
453
454 handle_nested_irq(ab8500->irq_base + line);
455 } while (latch_val);
456
457 return 0;
458 }
459
460 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
461 int hier_offset, u8 hier_val)
462 {
463 int latch_bit, status;
464 u8 latch_offset, latch_val;
465
466 do {
467 latch_bit = __ffs(hier_val);
468 latch_offset = (hier_offset << 3) + latch_bit;
469
470 /* Fix inconsistent ITFromLatch25 bit mapping... */
471 if (unlikely(latch_offset == 17))
472 latch_offset = 24;
473
474 status = get_register_interruptible(ab8500,
475 AB8500_INTERRUPT,
476 AB8500_IT_LATCH1_REG + latch_offset,
477 &latch_val);
478 if (status < 0 || latch_val == 0)
479 goto discard;
480
481 status = ab8500_handle_hierarchical_line(ab8500,
482 latch_offset, latch_val);
483 if (status < 0)
484 return status;
485 discard:
486 hier_val &= ~(1 << latch_bit);
487 } while (hier_val);
488
489 return 0;
490 }
491
492 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
493 {
494 struct ab8500 *ab8500 = dev;
495 u8 i;
496
497 dev_vdbg(ab8500->dev, "interrupt\n");
498
499 /* Hierarchical interrupt version */
500 for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) {
501 int status;
502 u8 hier_val;
503
504 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
505 AB8500_IT_LATCHHIER1_REG + i, &hier_val);
506 if (status < 0 || hier_val == 0)
507 continue;
508
509 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
510 if (status < 0)
511 break;
512 }
513 return IRQ_HANDLED;
514 }
515
516 /**
517 * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ
518 *
519 * @ab8500: ab8500_irq controller to operate on.
520 * @irq: index of the interrupt requested in the chip IRQs
521 *
522 * Useful for drivers to request their own IRQs.
523 */
524 static int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq)
525 {
526 if (!ab8500)
527 return -EINVAL;
528
529 return irq_create_mapping(ab8500->domain, irq);
530 }
531
532 static irqreturn_t ab8500_irq(int irq, void *dev)
533 {
534 struct ab8500 *ab8500 = dev;
535 int i;
536
537 dev_vdbg(ab8500->dev, "interrupt\n");
538
539 atomic_inc(&ab8500->transfer_ongoing);
540
541 for (i = 0; i < ab8500->mask_size; i++) {
542 int regoffset = ab8500->irq_reg_offset[i];
543 int status;
544 u8 value;
545
546 /*
547 * Interrupt register 12 doesn't exist prior to AB8500 version
548 * 2.0
549 */
550 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
551 continue;
552
553 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
554 AB8500_IT_LATCH1_REG + regoffset, &value);
555 if (status < 0 || value == 0)
556 continue;
557
558 do {
559 int bit = __ffs(value);
560 int line = i * 8 + bit;
561 int virq = ab8500_irq_get_virq(ab8500, line);
562
563 handle_nested_irq(virq);
564 value &= ~(1 << bit);
565
566 } while (value);
567 }
568 atomic_dec(&ab8500->transfer_ongoing);
569 return IRQ_HANDLED;
570 }
571
572 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
573 irq_hw_number_t hwirq)
574 {
575 struct ab8500 *ab8500 = d->host_data;
576
577 if (!ab8500)
578 return -EINVAL;
579
580 irq_set_chip_data(virq, ab8500);
581 irq_set_chip_and_handler(virq, &ab8500_irq_chip,
582 handle_simple_irq);
583 irq_set_nested_thread(virq, 1);
584 #ifdef CONFIG_ARM
585 set_irq_flags(virq, IRQF_VALID);
586 #else
587 irq_set_noprobe(virq);
588 #endif
589
590 return 0;
591 }
592
593 static struct irq_domain_ops ab8500_irq_ops = {
594 .map = ab8500_irq_map,
595 .xlate = irq_domain_xlate_twocell,
596 };
597
598 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
599 {
600 int num_irqs;
601
602 if (is_ab9540(ab8500))
603 num_irqs = AB9540_NR_IRQS;
604 else if (is_ab8505(ab8500))
605 num_irqs = AB8505_NR_IRQS;
606 else
607 num_irqs = AB8500_NR_IRQS;
608
609 /* If ->irq_base is zero this will give a linear mapping */
610 ab8500->domain = irq_domain_add_simple(NULL,
611 num_irqs, ab8500->irq_base,
612 &ab8500_irq_ops, ab8500);
613
614 if (!ab8500->domain) {
615 dev_err(ab8500->dev, "Failed to create irqdomain\n");
616 return -ENOSYS;
617 }
618
619 return 0;
620 }
621
622 int ab8500_suspend(struct ab8500 *ab8500)
623 {
624 if (atomic_read(&ab8500->transfer_ongoing))
625 return -EINVAL;
626 else
627 return 0;
628 }
629
630 static struct resource ab8500_gpadc_resources[] = {
631 {
632 .name = "HW_CONV_END",
633 .start = AB8500_INT_GP_HW_ADC_CONV_END,
634 .end = AB8500_INT_GP_HW_ADC_CONV_END,
635 .flags = IORESOURCE_IRQ,
636 },
637 {
638 .name = "SW_CONV_END",
639 .start = AB8500_INT_GP_SW_ADC_CONV_END,
640 .end = AB8500_INT_GP_SW_ADC_CONV_END,
641 .flags = IORESOURCE_IRQ,
642 },
643 };
644
645 static struct resource ab8500_rtc_resources[] = {
646 {
647 .name = "60S",
648 .start = AB8500_INT_RTC_60S,
649 .end = AB8500_INT_RTC_60S,
650 .flags = IORESOURCE_IRQ,
651 },
652 {
653 .name = "ALARM",
654 .start = AB8500_INT_RTC_ALARM,
655 .end = AB8500_INT_RTC_ALARM,
656 .flags = IORESOURCE_IRQ,
657 },
658 };
659
660 static struct resource ab8500_poweronkey_db_resources[] = {
661 {
662 .name = "ONKEY_DBF",
663 .start = AB8500_INT_PON_KEY1DB_F,
664 .end = AB8500_INT_PON_KEY1DB_F,
665 .flags = IORESOURCE_IRQ,
666 },
667 {
668 .name = "ONKEY_DBR",
669 .start = AB8500_INT_PON_KEY1DB_R,
670 .end = AB8500_INT_PON_KEY1DB_R,
671 .flags = IORESOURCE_IRQ,
672 },
673 };
674
675 static struct resource ab8500_av_acc_detect_resources[] = {
676 {
677 .name = "ACC_DETECT_1DB_F",
678 .start = AB8500_INT_ACC_DETECT_1DB_F,
679 .end = AB8500_INT_ACC_DETECT_1DB_F,
680 .flags = IORESOURCE_IRQ,
681 },
682 {
683 .name = "ACC_DETECT_1DB_R",
684 .start = AB8500_INT_ACC_DETECT_1DB_R,
685 .end = AB8500_INT_ACC_DETECT_1DB_R,
686 .flags = IORESOURCE_IRQ,
687 },
688 {
689 .name = "ACC_DETECT_21DB_F",
690 .start = AB8500_INT_ACC_DETECT_21DB_F,
691 .end = AB8500_INT_ACC_DETECT_21DB_F,
692 .flags = IORESOURCE_IRQ,
693 },
694 {
695 .name = "ACC_DETECT_21DB_R",
696 .start = AB8500_INT_ACC_DETECT_21DB_R,
697 .end = AB8500_INT_ACC_DETECT_21DB_R,
698 .flags = IORESOURCE_IRQ,
699 },
700 {
701 .name = "ACC_DETECT_22DB_F",
702 .start = AB8500_INT_ACC_DETECT_22DB_F,
703 .end = AB8500_INT_ACC_DETECT_22DB_F,
704 .flags = IORESOURCE_IRQ,
705 },
706 {
707 .name = "ACC_DETECT_22DB_R",
708 .start = AB8500_INT_ACC_DETECT_22DB_R,
709 .end = AB8500_INT_ACC_DETECT_22DB_R,
710 .flags = IORESOURCE_IRQ,
711 },
712 };
713
714 static struct resource ab8500_charger_resources[] = {
715 {
716 .name = "MAIN_CH_UNPLUG_DET",
717 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
718 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
719 .flags = IORESOURCE_IRQ,
720 },
721 {
722 .name = "MAIN_CHARGE_PLUG_DET",
723 .start = AB8500_INT_MAIN_CH_PLUG_DET,
724 .end = AB8500_INT_MAIN_CH_PLUG_DET,
725 .flags = IORESOURCE_IRQ,
726 },
727 {
728 .name = "VBUS_DET_R",
729 .start = AB8500_INT_VBUS_DET_R,
730 .end = AB8500_INT_VBUS_DET_R,
731 .flags = IORESOURCE_IRQ,
732 },
733 {
734 .name = "VBUS_DET_F",
735 .start = AB8500_INT_VBUS_DET_F,
736 .end = AB8500_INT_VBUS_DET_F,
737 .flags = IORESOURCE_IRQ,
738 },
739 {
740 .name = "USB_LINK_STATUS",
741 .start = AB8500_INT_USB_LINK_STATUS,
742 .end = AB8500_INT_USB_LINK_STATUS,
743 .flags = IORESOURCE_IRQ,
744 },
745 {
746 .name = "VBUS_OVV",
747 .start = AB8500_INT_VBUS_OVV,
748 .end = AB8500_INT_VBUS_OVV,
749 .flags = IORESOURCE_IRQ,
750 },
751 {
752 .name = "USB_CH_TH_PROT_R",
753 .start = AB8500_INT_USB_CH_TH_PROT_R,
754 .end = AB8500_INT_USB_CH_TH_PROT_R,
755 .flags = IORESOURCE_IRQ,
756 },
757 {
758 .name = "USB_CH_TH_PROT_F",
759 .start = AB8500_INT_USB_CH_TH_PROT_F,
760 .end = AB8500_INT_USB_CH_TH_PROT_F,
761 .flags = IORESOURCE_IRQ,
762 },
763 {
764 .name = "MAIN_EXT_CH_NOT_OK",
765 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
766 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
767 .flags = IORESOURCE_IRQ,
768 },
769 {
770 .name = "MAIN_CH_TH_PROT_R",
771 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
772 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
773 .flags = IORESOURCE_IRQ,
774 },
775 {
776 .name = "MAIN_CH_TH_PROT_F",
777 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
778 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
779 .flags = IORESOURCE_IRQ,
780 },
781 {
782 .name = "USB_CHARGER_NOT_OKR",
783 .start = AB8500_INT_USB_CHARGER_NOT_OKR,
784 .end = AB8500_INT_USB_CHARGER_NOT_OKR,
785 .flags = IORESOURCE_IRQ,
786 },
787 {
788 .name = "CH_WD_EXP",
789 .start = AB8500_INT_CH_WD_EXP,
790 .end = AB8500_INT_CH_WD_EXP,
791 .flags = IORESOURCE_IRQ,
792 },
793 };
794
795 static struct resource ab8500_btemp_resources[] = {
796 {
797 .name = "BAT_CTRL_INDB",
798 .start = AB8500_INT_BAT_CTRL_INDB,
799 .end = AB8500_INT_BAT_CTRL_INDB,
800 .flags = IORESOURCE_IRQ,
801 },
802 {
803 .name = "BTEMP_LOW",
804 .start = AB8500_INT_BTEMP_LOW,
805 .end = AB8500_INT_BTEMP_LOW,
806 .flags = IORESOURCE_IRQ,
807 },
808 {
809 .name = "BTEMP_HIGH",
810 .start = AB8500_INT_BTEMP_HIGH,
811 .end = AB8500_INT_BTEMP_HIGH,
812 .flags = IORESOURCE_IRQ,
813 },
814 {
815 .name = "BTEMP_LOW_MEDIUM",
816 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
817 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
818 .flags = IORESOURCE_IRQ,
819 },
820 {
821 .name = "BTEMP_MEDIUM_HIGH",
822 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
823 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
824 .flags = IORESOURCE_IRQ,
825 },
826 };
827
828 static struct resource ab8500_fg_resources[] = {
829 {
830 .name = "NCONV_ACCU",
831 .start = AB8500_INT_CCN_CONV_ACC,
832 .end = AB8500_INT_CCN_CONV_ACC,
833 .flags = IORESOURCE_IRQ,
834 },
835 {
836 .name = "BATT_OVV",
837 .start = AB8500_INT_BATT_OVV,
838 .end = AB8500_INT_BATT_OVV,
839 .flags = IORESOURCE_IRQ,
840 },
841 {
842 .name = "LOW_BAT_F",
843 .start = AB8500_INT_LOW_BAT_F,
844 .end = AB8500_INT_LOW_BAT_F,
845 .flags = IORESOURCE_IRQ,
846 },
847 {
848 .name = "LOW_BAT_R",
849 .start = AB8500_INT_LOW_BAT_R,
850 .end = AB8500_INT_LOW_BAT_R,
851 .flags = IORESOURCE_IRQ,
852 },
853 {
854 .name = "CC_INT_CALIB",
855 .start = AB8500_INT_CC_INT_CALIB,
856 .end = AB8500_INT_CC_INT_CALIB,
857 .flags = IORESOURCE_IRQ,
858 },
859 {
860 .name = "CCEOC",
861 .start = AB8500_INT_CCEOC,
862 .end = AB8500_INT_CCEOC,
863 .flags = IORESOURCE_IRQ,
864 },
865 };
866
867 static struct resource ab8500_chargalg_resources[] = {};
868
869 #ifdef CONFIG_DEBUG_FS
870 static struct resource ab8500_debug_resources[] = {
871 {
872 .name = "IRQ_FIRST",
873 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
874 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
875 .flags = IORESOURCE_IRQ,
876 },
877 {
878 .name = "IRQ_LAST",
879 .start = AB8500_INT_XTAL32K_KO,
880 .end = AB8500_INT_XTAL32K_KO,
881 .flags = IORESOURCE_IRQ,
882 },
883 };
884 #endif
885
886 static struct resource ab8500_usb_resources[] = {
887 {
888 .name = "ID_WAKEUP_R",
889 .start = AB8500_INT_ID_WAKEUP_R,
890 .end = AB8500_INT_ID_WAKEUP_R,
891 .flags = IORESOURCE_IRQ,
892 },
893 {
894 .name = "ID_WAKEUP_F",
895 .start = AB8500_INT_ID_WAKEUP_F,
896 .end = AB8500_INT_ID_WAKEUP_F,
897 .flags = IORESOURCE_IRQ,
898 },
899 {
900 .name = "VBUS_DET_F",
901 .start = AB8500_INT_VBUS_DET_F,
902 .end = AB8500_INT_VBUS_DET_F,
903 .flags = IORESOURCE_IRQ,
904 },
905 {
906 .name = "VBUS_DET_R",
907 .start = AB8500_INT_VBUS_DET_R,
908 .end = AB8500_INT_VBUS_DET_R,
909 .flags = IORESOURCE_IRQ,
910 },
911 {
912 .name = "USB_LINK_STATUS",
913 .start = AB8500_INT_USB_LINK_STATUS,
914 .end = AB8500_INT_USB_LINK_STATUS,
915 .flags = IORESOURCE_IRQ,
916 },
917 {
918 .name = "USB_ADP_PROBE_PLUG",
919 .start = AB8500_INT_ADP_PROBE_PLUG,
920 .end = AB8500_INT_ADP_PROBE_PLUG,
921 .flags = IORESOURCE_IRQ,
922 },
923 {
924 .name = "USB_ADP_PROBE_UNPLUG",
925 .start = AB8500_INT_ADP_PROBE_UNPLUG,
926 .end = AB8500_INT_ADP_PROBE_UNPLUG,
927 .flags = IORESOURCE_IRQ,
928 },
929 };
930
931 static struct resource ab8505_iddet_resources[] = {
932 {
933 .name = "KeyDeglitch",
934 .start = AB8505_INT_KEYDEGLITCH,
935 .end = AB8505_INT_KEYDEGLITCH,
936 .flags = IORESOURCE_IRQ,
937 },
938 {
939 .name = "KP",
940 .start = AB8505_INT_KP,
941 .end = AB8505_INT_KP,
942 .flags = IORESOURCE_IRQ,
943 },
944 {
945 .name = "IKP",
946 .start = AB8505_INT_IKP,
947 .end = AB8505_INT_IKP,
948 .flags = IORESOURCE_IRQ,
949 },
950 {
951 .name = "IKR",
952 .start = AB8505_INT_IKR,
953 .end = AB8505_INT_IKR,
954 .flags = IORESOURCE_IRQ,
955 },
956 {
957 .name = "KeyStuck",
958 .start = AB8505_INT_KEYSTUCK,
959 .end = AB8505_INT_KEYSTUCK,
960 .flags = IORESOURCE_IRQ,
961 },
962 };
963
964 static struct resource ab8500_temp_resources[] = {
965 {
966 .name = "AB8500_TEMP_WARM",
967 .start = AB8500_INT_TEMP_WARM,
968 .end = AB8500_INT_TEMP_WARM,
969 .flags = IORESOURCE_IRQ,
970 },
971 };
972
973 static struct mfd_cell abx500_common_devs[] = {
974 #ifdef CONFIG_DEBUG_FS
975 {
976 .name = "ab8500-debug",
977 .of_compatible = "stericsson,ab8500-debug",
978 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
979 .resources = ab8500_debug_resources,
980 },
981 #endif
982 {
983 .name = "ab8500-sysctrl",
984 .of_compatible = "stericsson,ab8500-sysctrl",
985 },
986 {
987 .name = "ab8500-regulator",
988 .of_compatible = "stericsson,ab8500-regulator",
989 },
990 {
991 .name = "abx500-clk",
992 .of_compatible = "stericsson,abx500-clk",
993 },
994 {
995 .name = "ab8500-gpadc",
996 .of_compatible = "stericsson,ab8500-gpadc",
997 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
998 .resources = ab8500_gpadc_resources,
999 },
1000 {
1001 .name = "ab8500-rtc",
1002 .of_compatible = "stericsson,ab8500-rtc",
1003 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
1004 .resources = ab8500_rtc_resources,
1005 },
1006 {
1007 .name = "ab8500-acc-det",
1008 .of_compatible = "stericsson,ab8500-acc-det",
1009 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
1010 .resources = ab8500_av_acc_detect_resources,
1011 },
1012 {
1013 .name = "ab8500-poweron-key",
1014 .of_compatible = "stericsson,ab8500-poweron-key",
1015 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
1016 .resources = ab8500_poweronkey_db_resources,
1017 },
1018 {
1019 .name = "ab8500-pwm",
1020 .of_compatible = "stericsson,ab8500-pwm",
1021 .id = 1,
1022 },
1023 {
1024 .name = "ab8500-pwm",
1025 .of_compatible = "stericsson,ab8500-pwm",
1026 .id = 2,
1027 },
1028 {
1029 .name = "ab8500-pwm",
1030 .of_compatible = "stericsson,ab8500-pwm",
1031 .id = 3,
1032 },
1033 {
1034 .name = "ab8500-leds",
1035 .of_compatible = "stericsson,ab8500-leds",
1036 },
1037 {
1038 .name = "ab8500-denc",
1039 .of_compatible = "stericsson,ab8500-denc",
1040 },
1041 {
1042 .name = "ab8500-temp",
1043 .of_compatible = "stericsson,ab8500-temp",
1044 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1045 .resources = ab8500_temp_resources,
1046 },
1047 };
1048
1049 static struct mfd_cell ab8500_bm_devs[] = {
1050 {
1051 .name = "ab8500-charger",
1052 .of_compatible = "stericsson,ab8500-charger",
1053 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
1054 .resources = ab8500_charger_resources,
1055 #ifndef CONFIG_OF
1056 .platform_data = &ab8500_bm_data,
1057 .pdata_size = sizeof(ab8500_bm_data),
1058 #endif
1059 },
1060 {
1061 .name = "ab8500-btemp",
1062 .of_compatible = "stericsson,ab8500-btemp",
1063 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
1064 .resources = ab8500_btemp_resources,
1065 #ifndef CONFIG_OF
1066 .platform_data = &ab8500_bm_data,
1067 .pdata_size = sizeof(ab8500_bm_data),
1068 #endif
1069 },
1070 {
1071 .name = "ab8500-fg",
1072 .of_compatible = "stericsson,ab8500-fg",
1073 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
1074 .resources = ab8500_fg_resources,
1075 #ifndef CONFIG_OF
1076 .platform_data = &ab8500_bm_data,
1077 .pdata_size = sizeof(ab8500_bm_data),
1078 #endif
1079 },
1080 {
1081 .name = "ab8500-chargalg",
1082 .of_compatible = "stericsson,ab8500-chargalg",
1083 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
1084 .resources = ab8500_chargalg_resources,
1085 #ifndef CONFIG_OF
1086 .platform_data = &ab8500_bm_data,
1087 .pdata_size = sizeof(ab8500_bm_data),
1088 #endif
1089 },
1090 };
1091
1092 static struct mfd_cell ab8500_devs[] = {
1093 {
1094 .name = "ab8500-gpio",
1095 .of_compatible = "stericsson,ab8500-gpio",
1096 },
1097 {
1098 .name = "ab8500-usb",
1099 .of_compatible = "stericsson,ab8500-usb",
1100 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1101 .resources = ab8500_usb_resources,
1102 },
1103 {
1104 .name = "ab8500-codec",
1105 .of_compatible = "stericsson,ab8500-codec",
1106 },
1107 };
1108
1109 static struct mfd_cell ab9540_devs[] = {
1110 {
1111 .name = "ab8500-gpio",
1112 },
1113 {
1114 .name = "ab9540-usb",
1115 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1116 .resources = ab8500_usb_resources,
1117 },
1118 {
1119 .name = "ab9540-codec",
1120 },
1121 };
1122
1123 /* Device list common to ab9540 and ab8505 */
1124 static struct mfd_cell ab9540_ab8505_devs[] = {
1125 {
1126 .name = "ab-iddet",
1127 .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1128 .resources = ab8505_iddet_resources,
1129 },
1130 };
1131
1132 static ssize_t show_chip_id(struct device *dev,
1133 struct device_attribute *attr, char *buf)
1134 {
1135 struct ab8500 *ab8500;
1136
1137 ab8500 = dev_get_drvdata(dev);
1138 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
1139 }
1140
1141 /*
1142 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1143 * 0x01 Swoff bit programming
1144 * 0x02 Thermal protection activation
1145 * 0x04 Vbat lower then BattOk falling threshold
1146 * 0x08 Watchdog expired
1147 * 0x10 Non presence of 32kHz clock
1148 * 0x20 Battery level lower than power on reset threshold
1149 * 0x40 Power on key 1 pressed longer than 10 seconds
1150 * 0x80 DB8500 thermal shutdown
1151 */
1152 static ssize_t show_switch_off_status(struct device *dev,
1153 struct device_attribute *attr, char *buf)
1154 {
1155 int ret;
1156 u8 value;
1157 struct ab8500 *ab8500;
1158
1159 ab8500 = dev_get_drvdata(dev);
1160 ret = get_register_interruptible(ab8500, AB8500_RTC,
1161 AB8500_SWITCH_OFF_STATUS, &value);
1162 if (ret < 0)
1163 return ret;
1164 return sprintf(buf, "%#x\n", value);
1165 }
1166
1167 /*
1168 * ab8500 has turned on due to (TURN_ON_STATUS):
1169 * 0x01 PORnVbat
1170 * 0x02 PonKey1dbF
1171 * 0x04 PonKey2dbF
1172 * 0x08 RTCAlarm
1173 * 0x10 MainChDet
1174 * 0x20 VbusDet
1175 * 0x40 UsbIDDetect
1176 * 0x80 Reserved
1177 */
1178 static ssize_t show_turn_on_status(struct device *dev,
1179 struct device_attribute *attr, char *buf)
1180 {
1181 int ret;
1182 u8 value;
1183 struct ab8500 *ab8500;
1184
1185 ab8500 = dev_get_drvdata(dev);
1186 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1187 AB8500_TURN_ON_STATUS, &value);
1188 if (ret < 0)
1189 return ret;
1190 return sprintf(buf, "%#x\n", value);
1191 }
1192
1193 static ssize_t show_ab9540_dbbrstn(struct device *dev,
1194 struct device_attribute *attr, char *buf)
1195 {
1196 struct ab8500 *ab8500;
1197 int ret;
1198 u8 value;
1199
1200 ab8500 = dev_get_drvdata(dev);
1201
1202 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
1203 AB9540_MODEM_CTRL2_REG, &value);
1204 if (ret < 0)
1205 return ret;
1206
1207 return sprintf(buf, "%d\n",
1208 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
1209 }
1210
1211 static ssize_t store_ab9540_dbbrstn(struct device *dev,
1212 struct device_attribute *attr, const char *buf, size_t count)
1213 {
1214 struct ab8500 *ab8500;
1215 int ret = count;
1216 int err;
1217 u8 bitvalues;
1218
1219 ab8500 = dev_get_drvdata(dev);
1220
1221 if (count > 0) {
1222 switch (buf[0]) {
1223 case '0':
1224 bitvalues = 0;
1225 break;
1226 case '1':
1227 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
1228 break;
1229 default:
1230 goto exit;
1231 }
1232
1233 err = mask_and_set_register_interruptible(ab8500,
1234 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
1235 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
1236 if (err)
1237 dev_info(ab8500->dev,
1238 "Failed to set DBBRSTN %c, err %#x\n",
1239 buf[0], err);
1240 }
1241
1242 exit:
1243 return ret;
1244 }
1245
1246 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
1247 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
1248 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
1249 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
1250 show_ab9540_dbbrstn, store_ab9540_dbbrstn);
1251
1252 static struct attribute *ab8500_sysfs_entries[] = {
1253 &dev_attr_chip_id.attr,
1254 &dev_attr_switch_off_status.attr,
1255 &dev_attr_turn_on_status.attr,
1256 NULL,
1257 };
1258
1259 static struct attribute *ab9540_sysfs_entries[] = {
1260 &dev_attr_chip_id.attr,
1261 &dev_attr_switch_off_status.attr,
1262 &dev_attr_turn_on_status.attr,
1263 &dev_attr_dbbrstn.attr,
1264 NULL,
1265 };
1266
1267 static struct attribute_group ab8500_attr_group = {
1268 .attrs = ab8500_sysfs_entries,
1269 };
1270
1271 static struct attribute_group ab9540_attr_group = {
1272 .attrs = ab9540_sysfs_entries,
1273 };
1274
1275 static int ab8500_probe(struct platform_device *pdev)
1276 {
1277 static char *switch_off_status[] = {
1278 "Swoff bit programming",
1279 "Thermal protection activation",
1280 "Vbat lower then BattOk falling threshold",
1281 "Watchdog expired",
1282 "Non presence of 32kHz clock",
1283 "Battery level lower than power on reset threshold",
1284 "Power on key 1 pressed longer than 10 seconds",
1285 "DB8500 thermal shutdown"};
1286 struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
1287 const struct platform_device_id *platid = platform_get_device_id(pdev);
1288 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1289 struct device_node *np = pdev->dev.of_node;
1290 struct ab8500 *ab8500;
1291 struct resource *resource;
1292 int ret;
1293 int i;
1294 u8 value;
1295
1296 ab8500 = devm_kzalloc(&pdev->dev, sizeof *ab8500, GFP_KERNEL);
1297 if (!ab8500)
1298 return -ENOMEM;
1299
1300 if (plat)
1301 ab8500->irq_base = plat->irq_base;
1302
1303 ab8500->dev = &pdev->dev;
1304
1305 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1306 if (!resource)
1307 return -ENODEV;
1308
1309 ab8500->irq = resource->start;
1310
1311 ab8500->read = ab8500_prcmu_read;
1312 ab8500->write = ab8500_prcmu_write;
1313 ab8500->write_masked = ab8500_prcmu_write_masked;
1314
1315 mutex_init(&ab8500->lock);
1316 mutex_init(&ab8500->irq_lock);
1317 atomic_set(&ab8500->transfer_ongoing, 0);
1318
1319 platform_set_drvdata(pdev, ab8500);
1320
1321 if (platid)
1322 version = platid->driver_data;
1323
1324 if (version != AB8500_VERSION_UNDEFINED)
1325 ab8500->version = version;
1326 else {
1327 ret = get_register_interruptible(ab8500, AB8500_MISC,
1328 AB8500_IC_NAME_REG, &value);
1329 if (ret < 0)
1330 return ret;
1331
1332 ab8500->version = value;
1333 }
1334
1335 ret = get_register_interruptible(ab8500, AB8500_MISC,
1336 AB8500_REV_REG, &value);
1337 if (ret < 0)
1338 return ret;
1339
1340 ab8500->chip_id = value;
1341
1342 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1343 ab8500_version_str[ab8500->version],
1344 ab8500->chip_id >> 4,
1345 ab8500->chip_id & 0x0F);
1346
1347 /* Configure AB8500 or AB9540 IRQ */
1348 if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1349 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1350 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1351 } else {
1352 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1353 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1354 }
1355 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1356 if (!ab8500->mask)
1357 return -ENOMEM;
1358 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1359 if (!ab8500->oldmask)
1360 return -ENOMEM;
1361
1362 /*
1363 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1364 * 0x01 Swoff bit programming
1365 * 0x02 Thermal protection activation
1366 * 0x04 Vbat lower then BattOk falling threshold
1367 * 0x08 Watchdog expired
1368 * 0x10 Non presence of 32kHz clock
1369 * 0x20 Battery level lower than power on reset threshold
1370 * 0x40 Power on key 1 pressed longer than 10 seconds
1371 * 0x80 DB8500 thermal shutdown
1372 */
1373
1374 ret = get_register_interruptible(ab8500, AB8500_RTC,
1375 AB8500_SWITCH_OFF_STATUS, &value);
1376 if (ret < 0)
1377 return ret;
1378 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1379
1380 if (value) {
1381 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1382 if (value & 1)
1383 printk(KERN_CONT " \"%s\"",
1384 switch_off_status[i]);
1385 value = value >> 1;
1386
1387 }
1388 printk(KERN_CONT "\n");
1389 } else {
1390 printk(KERN_CONT " None\n");
1391 }
1392
1393 if (plat && plat->init)
1394 plat->init(ab8500);
1395
1396 /* Clear and mask all interrupts */
1397 for (i = 0; i < ab8500->mask_size; i++) {
1398 /*
1399 * Interrupt register 12 doesn't exist prior to AB8500 version
1400 * 2.0
1401 */
1402 if (ab8500->irq_reg_offset[i] == 11 &&
1403 is_ab8500_1p1_or_earlier(ab8500))
1404 continue;
1405
1406 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1407 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1408 &value);
1409 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1410 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1411 }
1412
1413 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1414 if (ret)
1415 return ret;
1416
1417 for (i = 0; i < ab8500->mask_size; i++)
1418 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1419
1420 ret = ab8500_irq_init(ab8500, np);
1421 if (ret)
1422 return ret;
1423
1424 /* Activate this feature only in ab9540 */
1425 /* till tests are done on ab8500 1p2 or later*/
1426 if (is_ab9540(ab8500)) {
1427 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1428 ab8500_hierarchical_irq,
1429 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1430 "ab8500", ab8500);
1431 }
1432 else {
1433 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1434 ab8500_irq,
1435 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1436 "ab8500", ab8500);
1437 if (ret)
1438 return ret;
1439 }
1440
1441 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
1442 ARRAY_SIZE(abx500_common_devs), NULL,
1443 ab8500->irq_base, ab8500->domain);
1444 if (ret)
1445 return ret;
1446
1447 if (is_ab9540(ab8500))
1448 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1449 ARRAY_SIZE(ab9540_devs), NULL,
1450 ab8500->irq_base, ab8500->domain);
1451 else
1452 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1453 ARRAY_SIZE(ab8500_devs), NULL,
1454 ab8500->irq_base, ab8500->domain);
1455 if (ret)
1456 return ret;
1457
1458 if (is_ab9540(ab8500) || is_ab8505(ab8500))
1459 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
1460 ARRAY_SIZE(ab9540_ab8505_devs), NULL,
1461 ab8500->irq_base, ab8500->domain);
1462 if (ret)
1463 return ret;
1464
1465 if (!no_bm) {
1466 /* Add battery management devices */
1467 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1468 ARRAY_SIZE(ab8500_bm_devs), NULL,
1469 ab8500->irq_base, ab8500->domain);
1470 if (ret)
1471 dev_err(ab8500->dev, "error adding bm devices\n");
1472 }
1473
1474 if (is_ab9540(ab8500))
1475 ret = sysfs_create_group(&ab8500->dev->kobj,
1476 &ab9540_attr_group);
1477 else
1478 ret = sysfs_create_group(&ab8500->dev->kobj,
1479 &ab8500_attr_group);
1480 if (ret)
1481 dev_err(ab8500->dev, "error creating sysfs entries\n");
1482
1483 return ret;
1484 }
1485
1486 static int ab8500_remove(struct platform_device *pdev)
1487 {
1488 struct ab8500 *ab8500 = platform_get_drvdata(pdev);
1489
1490 if (is_ab9540(ab8500))
1491 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1492 else
1493 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1494
1495 mfd_remove_devices(ab8500->dev);
1496
1497 return 0;
1498 }
1499
1500 static const struct platform_device_id ab8500_id[] = {
1501 { "ab8500-core", AB8500_VERSION_AB8500 },
1502 { "ab8505-i2c", AB8500_VERSION_AB8505 },
1503 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1504 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1505 { }
1506 };
1507
1508 static struct platform_driver ab8500_core_driver = {
1509 .driver = {
1510 .name = "ab8500-core",
1511 .owner = THIS_MODULE,
1512 },
1513 .probe = ab8500_probe,
1514 .remove = ab8500_remove,
1515 .id_table = ab8500_id,
1516 };
1517
1518 static int __init ab8500_core_init(void)
1519 {
1520 return platform_driver_register(&ab8500_core_driver);
1521 }
1522
1523 static void __exit ab8500_core_exit(void)
1524 {
1525 platform_driver_unregister(&ab8500_core_driver);
1526 }
1527 core_initcall(ab8500_core_init);
1528 module_exit(ab8500_core_exit);
1529
1530 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1531 MODULE_DESCRIPTION("AB8500 MFD core");
1532 MODULE_LICENSE("GPL v2");
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