1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) ST-Ericsson SA 2010
4 *
5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
7 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/slab.h>
12 #include <linux/init.h>
13 #include <linux/irq.h>
14 #include <linux/irqdomain.h>
15 #include <linux/delay.h>
16 #include <linux/interrupt.h>
17 #include <linux/moduleparam.h>
18 #include <linux/platform_device.h>
19 #include <linux/mfd/core.h>
20 #include <linux/mfd/abx500.h>
21 #include <linux/mfd/abx500/ab8500.h>
22 #include <linux/mfd/dbx500-prcmu.h>
23 #include <linux/of.h>
24 #include <linux/of_device.h>
25
26 /*
27 * Interrupt register offsets
28 * Bank : 0x0E
29 */
30 #define AB8500_IT_SOURCE1_REG 0x00
31 #define AB8500_IT_SOURCE2_REG 0x01
32 #define AB8500_IT_SOURCE3_REG 0x02
33 #define AB8500_IT_SOURCE4_REG 0x03
34 #define AB8500_IT_SOURCE5_REG 0x04
35 #define AB8500_IT_SOURCE6_REG 0x05
36 #define AB8500_IT_SOURCE7_REG 0x06
37 #define AB8500_IT_SOURCE8_REG 0x07
38 #define AB9540_IT_SOURCE13_REG 0x0C
39 #define AB8500_IT_SOURCE19_REG 0x12
40 #define AB8500_IT_SOURCE20_REG 0x13
41 #define AB8500_IT_SOURCE21_REG 0x14
42 #define AB8500_IT_SOURCE22_REG 0x15
43 #define AB8500_IT_SOURCE23_REG 0x16
44 #define AB8500_IT_SOURCE24_REG 0x17
45
46 /*
47 * latch registers
48 */
49 #define AB8500_IT_LATCH1_REG 0x20
50 #define AB8500_IT_LATCH2_REG 0x21
51 #define AB8500_IT_LATCH3_REG 0x22
52 #define AB8500_IT_LATCH4_REG 0x23
53 #define AB8500_IT_LATCH5_REG 0x24
54 #define AB8500_IT_LATCH6_REG 0x25
55 #define AB8500_IT_LATCH7_REG 0x26
56 #define AB8500_IT_LATCH8_REG 0x27
57 #define AB8500_IT_LATCH9_REG 0x28
58 #define AB8500_IT_LATCH10_REG 0x29
59 #define AB8500_IT_LATCH12_REG 0x2B
60 #define AB9540_IT_LATCH13_REG 0x2C
61 #define AB8500_IT_LATCH19_REG 0x32
62 #define AB8500_IT_LATCH20_REG 0x33
63 #define AB8500_IT_LATCH21_REG 0x34
64 #define AB8500_IT_LATCH22_REG 0x35
65 #define AB8500_IT_LATCH23_REG 0x36
66 #define AB8500_IT_LATCH24_REG 0x37
67
68 /*
69 * mask registers
70 */
71
72 #define AB8500_IT_MASK1_REG 0x40
73 #define AB8500_IT_MASK2_REG 0x41
74 #define AB8500_IT_MASK3_REG 0x42
75 #define AB8500_IT_MASK4_REG 0x43
76 #define AB8500_IT_MASK5_REG 0x44
77 #define AB8500_IT_MASK6_REG 0x45
78 #define AB8500_IT_MASK7_REG 0x46
79 #define AB8500_IT_MASK8_REG 0x47
80 #define AB8500_IT_MASK9_REG 0x48
81 #define AB8500_IT_MASK10_REG 0x49
82 #define AB8500_IT_MASK11_REG 0x4A
83 #define AB8500_IT_MASK12_REG 0x4B
84 #define AB8500_IT_MASK13_REG 0x4C
85 #define AB8500_IT_MASK14_REG 0x4D
86 #define AB8500_IT_MASK15_REG 0x4E
87 #define AB8500_IT_MASK16_REG 0x4F
88 #define AB8500_IT_MASK17_REG 0x50
89 #define AB8500_IT_MASK18_REG 0x51
90 #define AB8500_IT_MASK19_REG 0x52
91 #define AB8500_IT_MASK20_REG 0x53
92 #define AB8500_IT_MASK21_REG 0x54
93 #define AB8500_IT_MASK22_REG 0x55
94 #define AB8500_IT_MASK23_REG 0x56
95 #define AB8500_IT_MASK24_REG 0x57
96 #define AB8500_IT_MASK25_REG 0x58
97
98 /*
99 * latch hierarchy registers
100 */
101 #define AB8500_IT_LATCHHIER1_REG 0x60
102 #define AB8500_IT_LATCHHIER2_REG 0x61
103 #define AB8500_IT_LATCHHIER3_REG 0x62
104 #define AB8540_IT_LATCHHIER4_REG 0x63
105
106 #define AB8500_IT_LATCHHIER_NUM 3
107 #define AB8540_IT_LATCHHIER_NUM 4
108
109 #define AB8500_REV_REG 0x80
110 #define AB8500_IC_NAME_REG 0x82
111 #define AB8500_SWITCH_OFF_STATUS 0x00
112
113 #define AB8500_TURN_ON_STATUS 0x00
114 #define AB8505_TURN_ON_STATUS_2 0x04
115
116 #define AB8500_CH_USBCH_STAT1_REG 0x02
117 #define VBUS_DET_DBNC100 0x02
118 #define VBUS_DET_DBNC1 0x01
119
120 static DEFINE_SPINLOCK(on_stat_lock);
121 static u8 turn_on_stat_mask = 0xFF;
122 static u8 turn_on_stat_set;
123
124 #define AB9540_MODEM_CTRL2_REG 0x23
125 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
126
127 /*
128 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
129 * numbers are indexed into this array with (num / 8). The interupts are
130 * defined in linux/mfd/ab8500.h
131 *
132 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
133 * offset 0.
134 */
135 /* AB8500 support */
136 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
137 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
138 };
139
140 /* AB9540 / AB8505 support */
141 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
142 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23
143 };
144
145 /* AB8540 support */
146 static const int ab8540_irq_regoffset[AB8540_NUM_IRQ_REGS] = {
147 0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22,
148 23, 25, 26, 27, 28, 29, 30, 31,
149 };
150
151 static const char ab8500_version_str[][7] = {
152 [AB8500_VERSION_AB8500] = "AB8500",
153 [AB8500_VERSION_AB8505] = "AB8505",
154 [AB8500_VERSION_AB9540] = "AB9540",
155 [AB8500_VERSION_AB8540] = "AB8540",
156 };
157
ab8500_prcmu_write(struct ab8500 * ab8500,u16 addr,u8 data)158 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
159 {
160 int ret;
161
162 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
163 if (ret < 0)
164 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
165 return ret;
166 }
167
ab8500_prcmu_write_masked(struct ab8500 * ab8500,u16 addr,u8 mask,u8 data)168 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
169 u8 data)
170 {
171 int ret;
172
173 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
174 &mask, 1);
175 if (ret < 0)
176 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
177 return ret;
178 }
179
ab8500_prcmu_read(struct ab8500 * ab8500,u16 addr)180 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
181 {
182 int ret;
183 u8 data;
184
185 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
186 if (ret < 0) {
187 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
188 return ret;
189 }
190 return (int)data;
191 }
192
ab8500_get_chip_id(struct device * dev)193 static int ab8500_get_chip_id(struct device *dev)
194 {
195 struct ab8500 *ab8500;
196
197 if (!dev)
198 return -EINVAL;
199 ab8500 = dev_get_drvdata(dev->parent);
200 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
201 }
202
set_register_interruptible(struct ab8500 * ab8500,u8 bank,u8 reg,u8 data)203 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
204 u8 reg, u8 data)
205 {
206 int ret;
207 /*
208 * Put the u8 bank and u8 register together into a an u16.
209 * The bank on higher 8 bits and register in lower 8 bits.
210 */
211 u16 addr = ((u16)bank) << 8 | reg;
212
213 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
214
215 mutex_lock(&ab8500->lock);
216
217 ret = ab8500->write(ab8500, addr, data);
218 if (ret < 0)
219 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
220 addr, ret);
221 mutex_unlock(&ab8500->lock);
222
223 return ret;
224 }
225
ab8500_set_register(struct device * dev,u8 bank,u8 reg,u8 value)226 static int ab8500_set_register(struct device *dev, u8 bank,
227 u8 reg, u8 value)
228 {
229 int ret;
230 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
231
232 atomic_inc(&ab8500->transfer_ongoing);
233 ret = set_register_interruptible(ab8500, bank, reg, value);
234 atomic_dec(&ab8500->transfer_ongoing);
235 return ret;
236 }
237
get_register_interruptible(struct ab8500 * ab8500,u8 bank,u8 reg,u8 * value)238 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
239 u8 reg, u8 *value)
240 {
241 int ret;
242 u16 addr = ((u16)bank) << 8 | reg;
243
244 mutex_lock(&ab8500->lock);
245
246 ret = ab8500->read(ab8500, addr);
247 if (ret < 0)
248 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
249 addr, ret);
250 else
251 *value = ret;
252
253 mutex_unlock(&ab8500->lock);
254 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
255
256 return (ret < 0) ? ret : 0;
257 }
258
ab8500_get_register(struct device * dev,u8 bank,u8 reg,u8 * value)259 static int ab8500_get_register(struct device *dev, u8 bank,
260 u8 reg, u8 *value)
261 {
262 int ret;
263 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
264
265 atomic_inc(&ab8500->transfer_ongoing);
266 ret = get_register_interruptible(ab8500, bank, reg, value);
267 atomic_dec(&ab8500->transfer_ongoing);
268 return ret;
269 }
270
mask_and_set_register_interruptible(struct ab8500 * ab8500,u8 bank,u8 reg,u8 bitmask,u8 bitvalues)271 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
272 u8 reg, u8 bitmask, u8 bitvalues)
273 {
274 int ret;
275 u16 addr = ((u16)bank) << 8 | reg;
276
277 mutex_lock(&ab8500->lock);
278
279 if (ab8500->write_masked == NULL) {
280 u8 data;
281
282 ret = ab8500->read(ab8500, addr);
283 if (ret < 0) {
284 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
285 addr, ret);
286 goto out;
287 }
288
289 data = (u8)ret;
290 data = (~bitmask & data) | (bitmask & bitvalues);
291
292 ret = ab8500->write(ab8500, addr, data);
293 if (ret < 0)
294 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
295 addr, ret);
296
297 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
298 data);
299 goto out;
300 }
301 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
302 if (ret < 0)
303 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
304 ret);
305 out:
306 mutex_unlock(&ab8500->lock);
307 return ret;
308 }
309
ab8500_mask_and_set_register(struct device * dev,u8 bank,u8 reg,u8 bitmask,u8 bitvalues)310 static int ab8500_mask_and_set_register(struct device *dev,
311 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
312 {
313 int ret;
314 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
315
316 atomic_inc(&ab8500->transfer_ongoing);
317 ret = mask_and_set_register_interruptible(ab8500, bank, reg,
318 bitmask, bitvalues);
319 atomic_dec(&ab8500->transfer_ongoing);
320 return ret;
321 }
322
323 static struct abx500_ops ab8500_ops = {
324 .get_chip_id = ab8500_get_chip_id,
325 .get_register = ab8500_get_register,
326 .set_register = ab8500_set_register,
327 .get_register_page = NULL,
328 .set_register_page = NULL,
329 .mask_and_set_register = ab8500_mask_and_set_register,
330 .event_registers_startup_state_get = NULL,
331 .startup_irq_enabled = NULL,
332 .dump_all_banks = ab8500_dump_all_banks,
333 };
334
ab8500_irq_lock(struct irq_data * data)335 static void ab8500_irq_lock(struct irq_data *data)
336 {
337 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
338
339 mutex_lock(&ab8500->irq_lock);
340 atomic_inc(&ab8500->transfer_ongoing);
341 }
342
ab8500_irq_sync_unlock(struct irq_data * data)343 static void ab8500_irq_sync_unlock(struct irq_data *data)
344 {
345 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
346 int i;
347
348 for (i = 0; i < ab8500->mask_size; i++) {
349 u8 old = ab8500->oldmask[i];
350 u8 new = ab8500->mask[i];
351 int reg;
352
353 if (new == old)
354 continue;
355
356 /*
357 * Interrupt register 12 doesn't exist prior to AB8500 version
358 * 2.0
359 */
360 if (ab8500->irq_reg_offset[i] == 11 &&
361 is_ab8500_1p1_or_earlier(ab8500))
362 continue;
363
364 if (ab8500->irq_reg_offset[i] < 0)
365 continue;
366
367 ab8500->oldmask[i] = new;
368
369 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
370 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
371 }
372 atomic_dec(&ab8500->transfer_ongoing);
373 mutex_unlock(&ab8500->irq_lock);
374 }
375
ab8500_irq_mask(struct irq_data * data)376 static void ab8500_irq_mask(struct irq_data *data)
377 {
378 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
379 int offset = data->hwirq;
380 int index = offset / 8;
381 int mask = 1 << (offset % 8);
382
383 ab8500->mask[index] |= mask;
384
385 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
386 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
387 ab8500->mask[index + 2] |= mask;
388 if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
389 ab8500->mask[index + 1] |= mask;
390 if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
391 /* Here the falling IRQ is one bit lower */
392 ab8500->mask[index] |= (mask << 1);
393 }
394
ab8500_irq_unmask(struct irq_data * data)395 static void ab8500_irq_unmask(struct irq_data *data)
396 {
397 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
398 unsigned int type = irqd_get_trigger_type(data);
399 int offset = data->hwirq;
400 int index = offset / 8;
401 int mask = 1 << (offset % 8);
402
403 if (type & IRQ_TYPE_EDGE_RISING)
404 ab8500->mask[index] &= ~mask;
405
406 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
407 if (type & IRQ_TYPE_EDGE_FALLING) {
408 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
409 ab8500->mask[index + 2] &= ~mask;
410 else if (offset >= AB9540_INT_GPIO50R &&
411 offset <= AB9540_INT_GPIO54R)
412 ab8500->mask[index + 1] &= ~mask;
413 else if (offset == AB8540_INT_GPIO43R ||
414 offset == AB8540_INT_GPIO44R)
415 /* Here the falling IRQ is one bit lower */
416 ab8500->mask[index] &= ~(mask << 1);
417 else
418 ab8500->mask[index] &= ~mask;
419 } else {
420 /* Satisfies the case where type is not set. */
421 ab8500->mask[index] &= ~mask;
422 }
423 }
424
ab8500_irq_set_type(struct irq_data * data,unsigned int type)425 static int ab8500_irq_set_type(struct irq_data *data, unsigned int type)
426 {
427 return 0;
428 }
429
430 static struct irq_chip ab8500_irq_chip = {
431 .name = "ab8500",
432 .irq_bus_lock = ab8500_irq_lock,
433 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
434 .irq_mask = ab8500_irq_mask,
435 .irq_disable = ab8500_irq_mask,
436 .irq_unmask = ab8500_irq_unmask,
437 .irq_set_type = ab8500_irq_set_type,
438 };
439
update_latch_offset(u8 * offset,int i)440 static void update_latch_offset(u8 *offset, int i)
441 {
442 /* Fix inconsistent ITFromLatch25 bit mapping... */
443 if (unlikely(*offset == 17))
444 *offset = 24;
445 /* Fix inconsistent ab8540 bit mapping... */
446 if (unlikely(*offset == 16))
447 *offset = 25;
448 if ((i == 3) && (*offset >= 24))
449 *offset += 2;
450 }
451
ab8500_handle_hierarchical_line(struct ab8500 * ab8500,int latch_offset,u8 latch_val)452 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
453 int latch_offset, u8 latch_val)
454 {
455 int int_bit, line, i;
456
457 for (i = 0; i < ab8500->mask_size; i++)
458 if (ab8500->irq_reg_offset[i] == latch_offset)
459 break;
460
461 if (i >= ab8500->mask_size) {
462 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
463 latch_offset);
464 return -ENXIO;
465 }
466
467 /* ignore masked out interrupts */
468 latch_val &= ~ab8500->mask[i];
469
470 while (latch_val) {
471 int_bit = __ffs(latch_val);
472 line = (i << 3) + int_bit;
473 latch_val &= ~(1 << int_bit);
474
475 /*
476 * This handles the falling edge hwirqs from the GPIO
477 * lines. Route them back to the line registered for the
478 * rising IRQ, as this is merely a flag for the same IRQ
479 * in linux terms.
480 */
481 if (line >= AB8500_INT_GPIO6F && line <= AB8500_INT_GPIO41F)
482 line -= 16;
483 if (line >= AB9540_INT_GPIO50F && line <= AB9540_INT_GPIO54F)
484 line -= 8;
485 if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F)
486 line += 1;
487
488 handle_nested_irq(irq_find_mapping(ab8500->domain, line));
489 }
490
491 return 0;
492 }
493
ab8500_handle_hierarchical_latch(struct ab8500 * ab8500,int hier_offset,u8 hier_val)494 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
495 int hier_offset, u8 hier_val)
496 {
497 int latch_bit, status;
498 u8 latch_offset, latch_val;
499
500 do {
501 latch_bit = __ffs(hier_val);
502 latch_offset = (hier_offset << 3) + latch_bit;
503
504 update_latch_offset(&latch_offset, hier_offset);
505
506 status = get_register_interruptible(ab8500,
507 AB8500_INTERRUPT,
508 AB8500_IT_LATCH1_REG + latch_offset,
509 &latch_val);
510 if (status < 0 || latch_val == 0)
511 goto discard;
512
513 status = ab8500_handle_hierarchical_line(ab8500,
514 latch_offset, latch_val);
515 if (status < 0)
516 return status;
517 discard:
518 hier_val &= ~(1 << latch_bit);
519 } while (hier_val);
520
521 return 0;
522 }
523
ab8500_hierarchical_irq(int irq,void * dev)524 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
525 {
526 struct ab8500 *ab8500 = dev;
527 u8 i;
528
529 dev_vdbg(ab8500->dev, "interrupt\n");
530
531 /* Hierarchical interrupt version */
532 for (i = 0; i < (ab8500->it_latchhier_num); i++) {
533 int status;
534 u8 hier_val;
535
536 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
537 AB8500_IT_LATCHHIER1_REG + i, &hier_val);
538 if (status < 0 || hier_val == 0)
539 continue;
540
541 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
542 if (status < 0)
543 break;
544 }
545 return IRQ_HANDLED;
546 }
547
ab8500_irq_map(struct irq_domain * d,unsigned int virq,irq_hw_number_t hwirq)548 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
549 irq_hw_number_t hwirq)
550 {
551 struct ab8500 *ab8500 = d->host_data;
552
553 if (!ab8500)
554 return -EINVAL;
555
556 irq_set_chip_data(virq, ab8500);
557 irq_set_chip_and_handler(virq, &ab8500_irq_chip,
558 handle_simple_irq);
559 irq_set_nested_thread(virq, 1);
560 irq_set_noprobe(virq);
561
562 return 0;
563 }
564
565 static const struct irq_domain_ops ab8500_irq_ops = {
566 .map = ab8500_irq_map,
567 .xlate = irq_domain_xlate_twocell,
568 };
569
ab8500_irq_init(struct ab8500 * ab8500,struct device_node * np)570 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
571 {
572 int num_irqs;
573
574 if (is_ab8540(ab8500))
575 num_irqs = AB8540_NR_IRQS;
576 else if (is_ab9540(ab8500))
577 num_irqs = AB9540_NR_IRQS;
578 else if (is_ab8505(ab8500))
579 num_irqs = AB8505_NR_IRQS;
580 else
581 num_irqs = AB8500_NR_IRQS;
582
583 /* If ->irq_base is zero this will give a linear mapping */
584 ab8500->domain = irq_domain_add_simple(ab8500->dev->of_node,
585 num_irqs, 0,
586 &ab8500_irq_ops, ab8500);
587
588 if (!ab8500->domain) {
589 dev_err(ab8500->dev, "Failed to create irqdomain\n");
590 return -ENODEV;
591 }
592
593 return 0;
594 }
595
ab8500_suspend(struct ab8500 * ab8500)596 int ab8500_suspend(struct ab8500 *ab8500)
597 {
598 if (atomic_read(&ab8500->transfer_ongoing))
599 return -EINVAL;
600
601 return 0;
602 }
603
604 static const struct mfd_cell ab8500_bm_devs[] = {
605 MFD_CELL_OF("ab8500-charger", NULL, NULL, 0, 0,
606 "stericsson,ab8500-charger"),
607 MFD_CELL_OF("ab8500-btemp", NULL, NULL, 0, 0,
608 "stericsson,ab8500-btemp"),
609 MFD_CELL_OF("ab8500-fg", NULL, NULL, 0, 0,
610 "stericsson,ab8500-fg"),
611 MFD_CELL_OF("ab8500-chargalg", NULL, NULL, 0, 0,
612 "stericsson,ab8500-chargalg"),
613 };
614
615 static const struct mfd_cell ab8500_devs[] = {
616 MFD_CELL_OF("ab8500-sysctrl",
617 NULL, NULL, 0, 0, "stericsson,ab8500-sysctrl"),
618 MFD_CELL_OF("ab8500-ext-regulator",
619 NULL, NULL, 0, 0, "stericsson,ab8500-ext-regulator"),
620 MFD_CELL_OF("ab8500-regulator",
621 NULL, NULL, 0, 0, "stericsson,ab8500-regulator"),
622 MFD_CELL_OF("ab8500-clk",
623 NULL, NULL, 0, 0, "stericsson,ab8500-clk"),
624 MFD_CELL_OF("ab8500-gpadc",
625 NULL, NULL, 0, 0, "stericsson,ab8500-gpadc"),
626 MFD_CELL_OF("ab8500-rtc",
627 NULL, NULL, 0, 0, "stericsson,ab8500-rtc"),
628 MFD_CELL_OF("ab8500-acc-det",
629 NULL, NULL, 0, 0, "stericsson,ab8500-acc-det"),
630 MFD_CELL_OF("ab8500-poweron-key",
631 NULL, NULL, 0, 0, "stericsson,ab8500-poweron-key"),
632 MFD_CELL_OF("ab8500-pwm",
633 NULL, NULL, 0, 1, "stericsson,ab8500-pwm"),
634 MFD_CELL_OF("ab8500-pwm",
635 NULL, NULL, 0, 2, "stericsson,ab8500-pwm"),
636 MFD_CELL_OF("ab8500-pwm",
637 NULL, NULL, 0, 3, "stericsson,ab8500-pwm"),
638 MFD_CELL_OF("ab8500-denc",
639 NULL, NULL, 0, 0, "stericsson,ab8500-denc"),
640 MFD_CELL_OF("pinctrl-ab8500",
641 NULL, NULL, 0, 0, "stericsson,ab8500-gpio"),
642 MFD_CELL_OF("abx500-temp",
643 NULL, NULL, 0, 0, "stericsson,abx500-temp"),
644 MFD_CELL_OF("ab8500-usb",
645 NULL, NULL, 0, 0, "stericsson,ab8500-usb"),
646 MFD_CELL_OF("ab8500-codec",
647 NULL, NULL, 0, 0, "stericsson,ab8500-codec"),
648 };
649
650 static const struct mfd_cell ab9540_devs[] = {
651 {
652 .name = "ab8500-sysctrl",
653 },
654 {
655 .name = "ab8500-ext-regulator",
656 },
657 {
658 .name = "ab8500-regulator",
659 },
660 {
661 .name = "abx500-clk",
662 .of_compatible = "stericsson,abx500-clk",
663 },
664 {
665 .name = "ab8500-gpadc",
666 .of_compatible = "stericsson,ab8500-gpadc",
667 },
668 {
669 .name = "ab8500-rtc",
670 },
671 {
672 .name = "ab8500-acc-det",
673 },
674 {
675 .name = "ab8500-poweron-key",
676 },
677 {
678 .name = "ab8500-pwm",
679 .id = 1,
680 },
681 {
682 .name = "abx500-temp",
683 },
684 {
685 .name = "pinctrl-ab9540",
686 .of_compatible = "stericsson,ab9540-gpio",
687 },
688 {
689 .name = "ab9540-usb",
690 },
691 {
692 .name = "ab9540-codec",
693 },
694 {
695 .name = "ab-iddet",
696 },
697 };
698
699 /* Device list for ab8505 */
700 static const struct mfd_cell ab8505_devs[] = {
701 {
702 .name = "ab8500-sysctrl",
703 .of_compatible = "stericsson,ab8500-sysctrl",
704 },
705 {
706 .name = "ab8500-regulator",
707 .of_compatible = "stericsson,ab8505-regulator",
708 },
709 {
710 .name = "abx500-clk",
711 .of_compatible = "stericsson,ab8500-clk",
712 },
713 {
714 .name = "ab8500-gpadc",
715 .of_compatible = "stericsson,ab8500-gpadc",
716 },
717 {
718 .name = "ab8500-rtc",
719 .of_compatible = "stericsson,ab8500-rtc",
720 },
721 {
722 .name = "ab8500-acc-det",
723 .of_compatible = "stericsson,ab8500-acc-det",
724 },
725 {
726 .name = "ab8500-poweron-key",
727 .of_compatible = "stericsson,ab8500-poweron-key",
728 },
729 {
730 .name = "ab8500-pwm",
731 .of_compatible = "stericsson,ab8500-pwm",
732 .id = 1,
733 },
734 {
735 .name = "pinctrl-ab8505",
736 .of_compatible = "stericsson,ab8505-gpio",
737 },
738 {
739 .name = "ab8500-usb",
740 .of_compatible = "stericsson,ab8500-usb",
741 },
742 {
743 .name = "ab8500-codec",
744 .of_compatible = "stericsson,ab8500-codec",
745 },
746 {
747 .name = "ab-iddet",
748 },
749 };
750
751 static const struct mfd_cell ab8540_devs[] = {
752 {
753 .name = "ab8500-sysctrl",
754 },
755 {
756 .name = "ab8500-ext-regulator",
757 },
758 {
759 .name = "ab8500-regulator",
760 },
761 {
762 .name = "abx500-clk",
763 .of_compatible = "stericsson,abx500-clk",
764 },
765 {
766 .name = "ab8500-gpadc",
767 .of_compatible = "stericsson,ab8500-gpadc",
768 },
769 {
770 .name = "ab8500-acc-det",
771 },
772 {
773 .name = "ab8500-poweron-key",
774 },
775 {
776 .name = "ab8500-pwm",
777 .id = 1,
778 },
779 {
780 .name = "abx500-temp",
781 },
782 {
783 .name = "pinctrl-ab8540",
784 },
785 {
786 .name = "ab8540-usb",
787 },
788 {
789 .name = "ab8540-codec",
790 },
791 {
792 .name = "ab-iddet",
793 },
794 };
795
796 static const struct mfd_cell ab8540_cut1_devs[] = {
797 {
798 .name = "ab8500-rtc",
799 .of_compatible = "stericsson,ab8500-rtc",
800 },
801 };
802
803 static const struct mfd_cell ab8540_cut2_devs[] = {
804 {
805 .name = "ab8540-rtc",
806 .of_compatible = "stericsson,ab8540-rtc",
807 },
808 };
809
chip_id_show(struct device * dev,struct device_attribute * attr,char * buf)810 static ssize_t chip_id_show(struct device *dev,
811 struct device_attribute *attr, char *buf)
812 {
813 struct ab8500 *ab8500;
814
815 ab8500 = dev_get_drvdata(dev);
816
817 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
818 }
819
820 /*
821 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
822 * 0x01 Swoff bit programming
823 * 0x02 Thermal protection activation
824 * 0x04 Vbat lower then BattOk falling threshold
825 * 0x08 Watchdog expired
826 * 0x10 Non presence of 32kHz clock
827 * 0x20 Battery level lower than power on reset threshold
828 * 0x40 Power on key 1 pressed longer than 10 seconds
829 * 0x80 DB8500 thermal shutdown
830 */
switch_off_status_show(struct device * dev,struct device_attribute * attr,char * buf)831 static ssize_t switch_off_status_show(struct device *dev,
832 struct device_attribute *attr, char *buf)
833 {
834 int ret;
835 u8 value;
836 struct ab8500 *ab8500;
837
838 ab8500 = dev_get_drvdata(dev);
839 ret = get_register_interruptible(ab8500, AB8500_RTC,
840 AB8500_SWITCH_OFF_STATUS, &value);
841 if (ret < 0)
842 return ret;
843 return sprintf(buf, "%#x\n", value);
844 }
845
846 /* use mask and set to override the register turn_on_stat value */
ab8500_override_turn_on_stat(u8 mask,u8 set)847 void ab8500_override_turn_on_stat(u8 mask, u8 set)
848 {
849 spin_lock(&on_stat_lock);
850 turn_on_stat_mask = mask;
851 turn_on_stat_set = set;
852 spin_unlock(&on_stat_lock);
853 }
854
855 /*
856 * ab8500 has turned on due to (TURN_ON_STATUS):
857 * 0x01 PORnVbat
858 * 0x02 PonKey1dbF
859 * 0x04 PonKey2dbF
860 * 0x08 RTCAlarm
861 * 0x10 MainChDet
862 * 0x20 VbusDet
863 * 0x40 UsbIDDetect
864 * 0x80 Reserved
865 */
turn_on_status_show(struct device * dev,struct device_attribute * attr,char * buf)866 static ssize_t turn_on_status_show(struct device *dev,
867 struct device_attribute *attr, char *buf)
868 {
869 int ret;
870 u8 value;
871 struct ab8500 *ab8500;
872
873 ab8500 = dev_get_drvdata(dev);
874 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
875 AB8500_TURN_ON_STATUS, &value);
876 if (ret < 0)
877 return ret;
878
879 /*
880 * In L9540, turn_on_status register is not updated correctly if
881 * the device is rebooted with AC/USB charger connected. Due to
882 * this, the device boots android instead of entering into charge
883 * only mode. Read the AC/USB status register to detect the charger
884 * presence and update the turn on status manually.
885 */
886 if (is_ab9540(ab8500)) {
887 spin_lock(&on_stat_lock);
888 value = (value & turn_on_stat_mask) | turn_on_stat_set;
889 spin_unlock(&on_stat_lock);
890 }
891
892 return sprintf(buf, "%#x\n", value);
893 }
894
turn_on_status_2_show(struct device * dev,struct device_attribute * attr,char * buf)895 static ssize_t turn_on_status_2_show(struct device *dev,
896 struct device_attribute *attr, char *buf)
897 {
898 int ret;
899 u8 value;
900 struct ab8500 *ab8500;
901
902 ab8500 = dev_get_drvdata(dev);
903 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
904 AB8505_TURN_ON_STATUS_2, &value);
905 if (ret < 0)
906 return ret;
907 return sprintf(buf, "%#x\n", (value & 0x1));
908 }
909
dbbrstn_show(struct device * dev,struct device_attribute * attr,char * buf)910 static ssize_t dbbrstn_show(struct device *dev,
911 struct device_attribute *attr, char *buf)
912 {
913 struct ab8500 *ab8500;
914 int ret;
915 u8 value;
916
917 ab8500 = dev_get_drvdata(dev);
918
919 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
920 AB9540_MODEM_CTRL2_REG, &value);
921 if (ret < 0)
922 return ret;
923
924 return sprintf(buf, "%d\n",
925 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
926 }
927
dbbrstn_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)928 static ssize_t dbbrstn_store(struct device *dev,
929 struct device_attribute *attr, const char *buf, size_t count)
930 {
931 struct ab8500 *ab8500;
932 int ret = count;
933 int err;
934 u8 bitvalues;
935
936 ab8500 = dev_get_drvdata(dev);
937
938 if (count > 0) {
939 switch (buf[0]) {
940 case '0':
941 bitvalues = 0;
942 break;
943 case '1':
944 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
945 break;
946 default:
947 goto exit;
948 }
949
950 err = mask_and_set_register_interruptible(ab8500,
951 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
952 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
953 if (err)
954 dev_info(ab8500->dev,
955 "Failed to set DBBRSTN %c, err %#x\n",
956 buf[0], err);
957 }
958
959 exit:
960 return ret;
961 }
962
963 static DEVICE_ATTR_RO(chip_id);
964 static DEVICE_ATTR_RO(switch_off_status);
965 static DEVICE_ATTR_RO(turn_on_status);
966 static DEVICE_ATTR_RO(turn_on_status_2);
967 static DEVICE_ATTR_RW(dbbrstn);
968
969 static struct attribute *ab8500_sysfs_entries[] = {
970 &dev_attr_chip_id.attr,
971 &dev_attr_switch_off_status.attr,
972 &dev_attr_turn_on_status.attr,
973 NULL,
974 };
975
976 static struct attribute *ab8505_sysfs_entries[] = {
977 &dev_attr_turn_on_status_2.attr,
978 NULL,
979 };
980
981 static struct attribute *ab9540_sysfs_entries[] = {
982 &dev_attr_chip_id.attr,
983 &dev_attr_switch_off_status.attr,
984 &dev_attr_turn_on_status.attr,
985 &dev_attr_dbbrstn.attr,
986 NULL,
987 };
988
989 static const struct attribute_group ab8500_attr_group = {
990 .attrs = ab8500_sysfs_entries,
991 };
992
993 static const struct attribute_group ab8505_attr_group = {
994 .attrs = ab8505_sysfs_entries,
995 };
996
997 static const struct attribute_group ab9540_attr_group = {
998 .attrs = ab9540_sysfs_entries,
999 };
1000
ab8500_probe(struct platform_device * pdev)1001 static int ab8500_probe(struct platform_device *pdev)
1002 {
1003 static const char * const switch_off_status[] = {
1004 "Swoff bit programming",
1005 "Thermal protection activation",
1006 "Vbat lower then BattOk falling threshold",
1007 "Watchdog expired",
1008 "Non presence of 32kHz clock",
1009 "Battery level lower than power on reset threshold",
1010 "Power on key 1 pressed longer than 10 seconds",
1011 "DB8500 thermal shutdown"};
1012 static const char * const turn_on_status[] = {
1013 "Battery rising (Vbat)",
1014 "Power On Key 1 dbF",
1015 "Power On Key 2 dbF",
1016 "RTC Alarm",
1017 "Main Charger Detect",
1018 "Vbus Detect (USB)",
1019 "USB ID Detect",
1020 "UART Factory Mode Detect"};
1021 const struct platform_device_id *platid = platform_get_device_id(pdev);
1022 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1023 struct device_node *np = pdev->dev.of_node;
1024 struct ab8500 *ab8500;
1025 int ret;
1026 int i;
1027 int irq;
1028 u8 value;
1029
1030 ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
1031 if (!ab8500)
1032 return -ENOMEM;
1033
1034 ab8500->dev = &pdev->dev;
1035
1036 irq = platform_get_irq(pdev, 0);
1037 if (irq < 0)
1038 return irq;
1039
1040 ab8500->irq = irq;
1041
1042 ab8500->read = ab8500_prcmu_read;
1043 ab8500->write = ab8500_prcmu_write;
1044 ab8500->write_masked = ab8500_prcmu_write_masked;
1045
1046 mutex_init(&ab8500->lock);
1047 mutex_init(&ab8500->irq_lock);
1048 atomic_set(&ab8500->transfer_ongoing, 0);
1049
1050 platform_set_drvdata(pdev, ab8500);
1051
1052 if (platid)
1053 version = platid->driver_data;
1054
1055 if (version != AB8500_VERSION_UNDEFINED)
1056 ab8500->version = version;
1057 else {
1058 ret = get_register_interruptible(ab8500, AB8500_MISC,
1059 AB8500_IC_NAME_REG, &value);
1060 if (ret < 0) {
1061 dev_err(&pdev->dev, "could not probe HW\n");
1062 return ret;
1063 }
1064
1065 ab8500->version = value;
1066 }
1067
1068 ret = get_register_interruptible(ab8500, AB8500_MISC,
1069 AB8500_REV_REG, &value);
1070 if (ret < 0)
1071 return ret;
1072
1073 ab8500->chip_id = value;
1074
1075 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1076 ab8500_version_str[ab8500->version],
1077 ab8500->chip_id >> 4,
1078 ab8500->chip_id & 0x0F);
1079
1080 /* Configure AB8540 */
1081 if (is_ab8540(ab8500)) {
1082 ab8500->mask_size = AB8540_NUM_IRQ_REGS;
1083 ab8500->irq_reg_offset = ab8540_irq_regoffset;
1084 ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM;
1085 } /* Configure AB8500 or AB9540 IRQ */
1086 else if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1087 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1088 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1089 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1090 } else {
1091 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1092 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1093 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1094 }
1095 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1096 GFP_KERNEL);
1097 if (!ab8500->mask)
1098 return -ENOMEM;
1099 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1100 GFP_KERNEL);
1101 if (!ab8500->oldmask)
1102 return -ENOMEM;
1103
1104 /*
1105 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1106 * 0x01 Swoff bit programming
1107 * 0x02 Thermal protection activation
1108 * 0x04 Vbat lower then BattOk falling threshold
1109 * 0x08 Watchdog expired
1110 * 0x10 Non presence of 32kHz clock
1111 * 0x20 Battery level lower than power on reset threshold
1112 * 0x40 Power on key 1 pressed longer than 10 seconds
1113 * 0x80 DB8500 thermal shutdown
1114 */
1115
1116 ret = get_register_interruptible(ab8500, AB8500_RTC,
1117 AB8500_SWITCH_OFF_STATUS, &value);
1118 if (ret < 0)
1119 return ret;
1120 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1121
1122 if (value) {
1123 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1124 if (value & 1)
1125 pr_cont(" \"%s\"", switch_off_status[i]);
1126 value = value >> 1;
1127
1128 }
1129 pr_cont("\n");
1130 } else {
1131 pr_cont(" None\n");
1132 }
1133 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1134 AB8500_TURN_ON_STATUS, &value);
1135 if (ret < 0)
1136 return ret;
1137 dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value);
1138
1139 if (value) {
1140 for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) {
1141 if (value & 1)
1142 pr_cont("\"%s\" ", turn_on_status[i]);
1143 value = value >> 1;
1144 }
1145 pr_cont("\n");
1146 } else {
1147 pr_cont("None\n");
1148 }
1149
1150 if (is_ab9540(ab8500)) {
1151 ret = get_register_interruptible(ab8500, AB8500_CHARGER,
1152 AB8500_CH_USBCH_STAT1_REG, &value);
1153 if (ret < 0)
1154 return ret;
1155 if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100))
1156 ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
1157 AB8500_VBUS_DET);
1158 }
1159
1160 /* Clear and mask all interrupts */
1161 for (i = 0; i < ab8500->mask_size; i++) {
1162 /*
1163 * Interrupt register 12 doesn't exist prior to AB8500 version
1164 * 2.0
1165 */
1166 if (ab8500->irq_reg_offset[i] == 11 &&
1167 is_ab8500_1p1_or_earlier(ab8500))
1168 continue;
1169
1170 if (ab8500->irq_reg_offset[i] < 0)
1171 continue;
1172
1173 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1174 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1175 &value);
1176 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1177 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1178 }
1179
1180 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1181 if (ret)
1182 return ret;
1183
1184 for (i = 0; i < ab8500->mask_size; i++)
1185 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1186
1187 ret = ab8500_irq_init(ab8500, np);
1188 if (ret)
1189 return ret;
1190
1191 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1192 ab8500_hierarchical_irq,
1193 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1194 "ab8500", ab8500);
1195 if (ret)
1196 return ret;
1197
1198 if (is_ab9540(ab8500))
1199 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1200 ARRAY_SIZE(ab9540_devs), NULL,
1201 0, ab8500->domain);
1202 else if (is_ab8540(ab8500)) {
1203 ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
1204 ARRAY_SIZE(ab8540_devs), NULL,
1205 0, ab8500->domain);
1206 if (ret)
1207 return ret;
1208
1209 if (is_ab8540_1p2_or_earlier(ab8500))
1210 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut1_devs,
1211 ARRAY_SIZE(ab8540_cut1_devs), NULL,
1212 0, ab8500->domain);
1213 else /* ab8540 >= cut2 */
1214 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut2_devs,
1215 ARRAY_SIZE(ab8540_cut2_devs), NULL,
1216 0, ab8500->domain);
1217 } else if (is_ab8505(ab8500))
1218 ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
1219 ARRAY_SIZE(ab8505_devs), NULL,
1220 0, ab8500->domain);
1221 else
1222 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1223 ARRAY_SIZE(ab8500_devs), NULL,
1224 0, ab8500->domain);
1225 if (ret)
1226 return ret;
1227
1228 /* Add battery management devices */
1229 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1230 ARRAY_SIZE(ab8500_bm_devs), NULL,
1231 0, ab8500->domain);
1232 if (ret)
1233 dev_err(ab8500->dev, "error adding bm devices\n");
1234
1235 if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1236 ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
1237 ret = sysfs_create_group(&ab8500->dev->kobj,
1238 &ab9540_attr_group);
1239 else
1240 ret = sysfs_create_group(&ab8500->dev->kobj,
1241 &ab8500_attr_group);
1242
1243 if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1244 ab8500->chip_id >= AB8500_CUT2P0)
1245 ret = sysfs_create_group(&ab8500->dev->kobj,
1246 &ab8505_attr_group);
1247
1248 if (ret)
1249 dev_err(ab8500->dev, "error creating sysfs entries\n");
1250
1251 return ret;
1252 }
1253
1254 static const struct platform_device_id ab8500_id[] = {
1255 { "ab8500-core", AB8500_VERSION_AB8500 },
1256 { "ab8505-core", AB8500_VERSION_AB8505 },
1257 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1258 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1259 { }
1260 };
1261
1262 static struct platform_driver ab8500_core_driver = {
1263 .driver = {
1264 .name = "ab8500-core",
1265 .suppress_bind_attrs = true,
1266 },
1267 .probe = ab8500_probe,
1268 .id_table = ab8500_id,
1269 };
1270
ab8500_core_init(void)1271 static int __init ab8500_core_init(void)
1272 {
1273 return platform_driver_register(&ab8500_core_driver);
1274 }
1275 core_initcall(ab8500_core_init);
1276