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
119 static DEFINE_SPINLOCK(on_stat_lock);
120 static u8 turn_on_stat_mask = 0xFF;
121 static 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 */
135 static 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 */
140 static 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 */
145 static 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
150 static 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
ab8500_prcmu_write(struct ab8500 * ab8500,u16 addr,u8 data)157 static 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
ab8500_prcmu_write_masked(struct ab8500 * ab8500,u16 addr,u8 mask,u8 data)167 static 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
ab8500_prcmu_read(struct ab8500 * ab8500,u16 addr)179 static 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
ab8500_get_chip_id(struct device * dev)192 static 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
set_register_interruptible(struct ab8500 * ab8500,u8 bank,u8 reg,u8 data)202 static 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
ab8500_set_register(struct device * dev,u8 bank,u8 reg,u8 value)225 static 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
get_register_interruptible(struct ab8500 * ab8500,u8 bank,u8 reg,u8 * value)237 static 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
ab8500_get_register(struct device * dev,u8 bank,u8 reg,u8 * value)258 static 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
mask_and_set_register_interruptible(struct ab8500 * ab8500,u8 bank,u8 reg,u8 bitmask,u8 bitvalues)270 static 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);
304 out:
305 mutex_unlock(&ab8500->lock);
306 return ret;
307 }
308
ab8500_mask_and_set_register(struct device * dev,u8 bank,u8 reg,u8 bitmask,u8 bitvalues)309 static 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
322 static 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
ab8500_irq_lock(struct irq_data * data)334 static 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
ab8500_irq_sync_unlock(struct irq_data * data)342 static 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
ab8500_irq_mask(struct irq_data * data)375 static 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
ab8500_irq_unmask(struct irq_data * data)394 static 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
ab8500_irq_set_type(struct irq_data * data,unsigned int type)424 static int ab8500_irq_set_type(struct irq_data *data, unsigned int type)
425 {
426 return 0;
427 }
428
429 static 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
update_latch_offset(u8 * offset,int i)439 static 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
ab8500_handle_hierarchical_line(struct ab8500 * ab8500,int latch_offset,u8 latch_val)451 static 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
ab8500_handle_hierarchical_latch(struct ab8500 * ab8500,int hier_offset,u8 hier_val)493 static 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;
516 discard:
517 hier_val &= ~(1 << latch_bit);
518 } while (hier_val);
519
520 return 0;
521 }
522
ab8500_hierarchical_irq(int irq,void * dev)523 static 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
ab8500_irq_map(struct irq_domain * d,unsigned int virq,irq_hw_number_t hwirq)547 static 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
564 static const struct irq_domain_ops ab8500_irq_ops = {
565 .map = ab8500_irq_map,
566 .xlate = irq_domain_xlate_twocell,
567 };
568
ab8500_irq_init(struct ab8500 * ab8500,struct device_node * np)569 static 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_create_simple(dev_fwnode(ab8500->dev), num_irqs, 0,
584 &ab8500_irq_ops, ab8500);
585
586 if (!ab8500->domain) {
587 dev_err(ab8500->dev, "Failed to create irqdomain\n");
588 return -ENODEV;
589 }
590
591 return 0;
592 }
593
ab8500_suspend(struct ab8500 * ab8500)594 int ab8500_suspend(struct ab8500 *ab8500)
595 {
596 if (atomic_read(&ab8500->transfer_ongoing))
597 return -EINVAL;
598
599 return 0;
600 }
601
602 static const struct mfd_cell ab8500_bm_devs[] = {
603 MFD_CELL_OF("ab8500-charger", NULL, NULL, 0, 0,
604 "stericsson,ab8500-charger"),
605 MFD_CELL_OF("ab8500-btemp", NULL, NULL, 0, 0,
606 "stericsson,ab8500-btemp"),
607 MFD_CELL_OF("ab8500-fg", NULL, NULL, 0, 0,
608 "stericsson,ab8500-fg"),
609 MFD_CELL_OF("ab8500-chargalg", NULL, NULL, 0, 0,
610 "stericsson,ab8500-chargalg"),
611 };
612
613 static const struct mfd_cell ab8500_devs[] = {
614 MFD_CELL_OF("ab8500-sysctrl",
615 NULL, NULL, 0, 0, "stericsson,ab8500-sysctrl"),
616 MFD_CELL_OF("ab8500-ext-regulator",
617 NULL, NULL, 0, 0, "stericsson,ab8500-ext-regulator"),
618 MFD_CELL_OF("ab8500-regulator",
619 NULL, NULL, 0, 0, "stericsson,ab8500-regulator"),
620 MFD_CELL_OF("ab8500-clk",
621 NULL, NULL, 0, 0, "stericsson,ab8500-clk"),
622 MFD_CELL_OF("ab8500-gpadc",
623 NULL, NULL, 0, 0, "stericsson,ab8500-gpadc"),
624 MFD_CELL_OF("ab8500-rtc",
625 NULL, NULL, 0, 0, "stericsson,ab8500-rtc"),
626 MFD_CELL_OF("ab8500-acc-det",
627 NULL, NULL, 0, 0, "stericsson,ab8500-acc-det"),
628 MFD_CELL_OF("ab8500-poweron-key",
629 NULL, NULL, 0, 0, "stericsson,ab8500-poweron-key"),
630 MFD_CELL_OF("ab8500-pwm",
631 NULL, NULL, 0, 1, "stericsson,ab8500-pwm"),
632 MFD_CELL_OF("ab8500-pwm",
633 NULL, NULL, 0, 2, "stericsson,ab8500-pwm"),
634 MFD_CELL_OF("ab8500-pwm",
635 NULL, NULL, 0, 3, "stericsson,ab8500-pwm"),
636 MFD_CELL_OF("ab8500-denc",
637 NULL, NULL, 0, 0, "stericsson,ab8500-denc"),
638 MFD_CELL_OF("pinctrl-ab8500",
639 NULL, NULL, 0, 0, "stericsson,ab8500-gpio"),
640 MFD_CELL_OF("abx500-temp",
641 NULL, NULL, 0, 0, "stericsson,abx500-temp"),
642 MFD_CELL_OF("ab8500-usb",
643 NULL, NULL, 0, 0, "stericsson,ab8500-usb"),
644 MFD_CELL_OF("ab8500-codec",
645 NULL, NULL, 0, 0, "stericsson,ab8500-codec"),
646 };
647
648 static const struct mfd_cell ab9540_devs[] = {
649 {
650 .name = "ab8500-sysctrl",
651 },
652 {
653 .name = "ab8500-ext-regulator",
654 },
655 {
656 .name = "ab8500-regulator",
657 },
658 {
659 .name = "abx500-clk",
660 .of_compatible = "stericsson,abx500-clk",
661 },
662 {
663 .name = "ab8500-gpadc",
664 .of_compatible = "stericsson,ab8500-gpadc",
665 },
666 {
667 .name = "ab8500-rtc",
668 },
669 {
670 .name = "ab8500-acc-det",
671 },
672 {
673 .name = "ab8500-poweron-key",
674 },
675 {
676 .name = "ab8500-pwm",
677 .id = 1,
678 },
679 {
680 .name = "abx500-temp",
681 },
682 {
683 .name = "pinctrl-ab9540",
684 .of_compatible = "stericsson,ab9540-gpio",
685 },
686 {
687 .name = "ab9540-usb",
688 },
689 {
690 .name = "ab9540-codec",
691 },
692 {
693 .name = "ab-iddet",
694 },
695 };
696
697 /* Device list for ab8505 */
698 static const struct mfd_cell ab8505_devs[] = {
699 {
700 .name = "ab8500-sysctrl",
701 .of_compatible = "stericsson,ab8500-sysctrl",
702 },
703 {
704 .name = "ab8500-regulator",
705 .of_compatible = "stericsson,ab8505-regulator",
706 },
707 {
708 .name = "abx500-clk",
709 .of_compatible = "stericsson,ab8500-clk",
710 },
711 {
712 .name = "ab8500-gpadc",
713 .of_compatible = "stericsson,ab8500-gpadc",
714 },
715 {
716 .name = "ab8500-rtc",
717 .of_compatible = "stericsson,ab8500-rtc",
718 },
719 {
720 .name = "ab8500-acc-det",
721 .of_compatible = "stericsson,ab8500-acc-det",
722 },
723 {
724 .name = "ab8500-poweron-key",
725 .of_compatible = "stericsson,ab8500-poweron-key",
726 },
727 {
728 .name = "ab8500-pwm",
729 .of_compatible = "stericsson,ab8500-pwm",
730 .id = 1,
731 },
732 {
733 .name = "pinctrl-ab8505",
734 .of_compatible = "stericsson,ab8505-gpio",
735 },
736 {
737 .name = "ab8500-usb",
738 .of_compatible = "stericsson,ab8500-usb",
739 },
740 {
741 .name = "ab8500-codec",
742 .of_compatible = "stericsson,ab8500-codec",
743 },
744 {
745 .name = "ab-iddet",
746 },
747 };
748
749 static const struct mfd_cell ab8540_devs[] = {
750 {
751 .name = "ab8500-sysctrl",
752 },
753 {
754 .name = "ab8500-ext-regulator",
755 },
756 {
757 .name = "ab8500-regulator",
758 },
759 {
760 .name = "abx500-clk",
761 .of_compatible = "stericsson,abx500-clk",
762 },
763 {
764 .name = "ab8500-gpadc",
765 .of_compatible = "stericsson,ab8500-gpadc",
766 },
767 {
768 .name = "ab8500-acc-det",
769 },
770 {
771 .name = "ab8500-poweron-key",
772 },
773 {
774 .name = "ab8500-pwm",
775 .id = 1,
776 },
777 {
778 .name = "abx500-temp",
779 },
780 {
781 .name = "pinctrl-ab8540",
782 },
783 {
784 .name = "ab8540-usb",
785 },
786 {
787 .name = "ab8540-codec",
788 },
789 {
790 .name = "ab-iddet",
791 },
792 };
793
794 static const struct mfd_cell ab8540_cut1_devs[] = {
795 {
796 .name = "ab8500-rtc",
797 .of_compatible = "stericsson,ab8500-rtc",
798 },
799 };
800
801 static const struct mfd_cell ab8540_cut2_devs[] = {
802 {
803 .name = "ab8540-rtc",
804 .of_compatible = "stericsson,ab8540-rtc",
805 },
806 };
807
chip_id_show(struct device * dev,struct device_attribute * attr,char * buf)808 static ssize_t chip_id_show(struct device *dev,
809 struct device_attribute *attr, char *buf)
810 {
811 struct ab8500 *ab8500;
812
813 ab8500 = dev_get_drvdata(dev);
814
815 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
816 }
817
818 /*
819 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
820 * 0x01 Swoff bit programming
821 * 0x02 Thermal protection activation
822 * 0x04 Vbat lower then BattOk falling threshold
823 * 0x08 Watchdog expired
824 * 0x10 Non presence of 32kHz clock
825 * 0x20 Battery level lower than power on reset threshold
826 * 0x40 Power on key 1 pressed longer than 10 seconds
827 * 0x80 DB8500 thermal shutdown
828 */
switch_off_status_show(struct device * dev,struct device_attribute * attr,char * buf)829 static ssize_t switch_off_status_show(struct device *dev,
830 struct device_attribute *attr, char *buf)
831 {
832 int ret;
833 u8 value;
834 struct ab8500 *ab8500;
835
836 ab8500 = dev_get_drvdata(dev);
837 ret = get_register_interruptible(ab8500, AB8500_RTC,
838 AB8500_SWITCH_OFF_STATUS, &value);
839 if (ret < 0)
840 return ret;
841 return sprintf(buf, "%#x\n", value);
842 }
843
844 /* use mask and set to override the register turn_on_stat value */
ab8500_override_turn_on_stat(u8 mask,u8 set)845 void ab8500_override_turn_on_stat(u8 mask, u8 set)
846 {
847 spin_lock(&on_stat_lock);
848 turn_on_stat_mask = mask;
849 turn_on_stat_set = set;
850 spin_unlock(&on_stat_lock);
851 }
852
853 /*
854 * ab8500 has turned on due to (TURN_ON_STATUS):
855 * 0x01 PORnVbat
856 * 0x02 PonKey1dbF
857 * 0x04 PonKey2dbF
858 * 0x08 RTCAlarm
859 * 0x10 MainChDet
860 * 0x20 VbusDet
861 * 0x40 UsbIDDetect
862 * 0x80 Reserved
863 */
turn_on_status_show(struct device * dev,struct device_attribute * attr,char * buf)864 static ssize_t turn_on_status_show(struct device *dev,
865 struct device_attribute *attr, char *buf)
866 {
867 int ret;
868 u8 value;
869 struct ab8500 *ab8500;
870
871 ab8500 = dev_get_drvdata(dev);
872 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
873 AB8500_TURN_ON_STATUS, &value);
874 if (ret < 0)
875 return ret;
876
877 /*
878 * In L9540, turn_on_status register is not updated correctly if
879 * the device is rebooted with AC/USB charger connected. Due to
880 * this, the device boots android instead of entering into charge
881 * only mode. Read the AC/USB status register to detect the charger
882 * presence and update the turn on status manually.
883 */
884 if (is_ab9540(ab8500)) {
885 spin_lock(&on_stat_lock);
886 value = (value & turn_on_stat_mask) | turn_on_stat_set;
887 spin_unlock(&on_stat_lock);
888 }
889
890 return sprintf(buf, "%#x\n", value);
891 }
892
turn_on_status_2_show(struct device * dev,struct device_attribute * attr,char * buf)893 static ssize_t turn_on_status_2_show(struct device *dev,
894 struct device_attribute *attr, char *buf)
895 {
896 int ret;
897 u8 value;
898 struct ab8500 *ab8500;
899
900 ab8500 = dev_get_drvdata(dev);
901 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
902 AB8505_TURN_ON_STATUS_2, &value);
903 if (ret < 0)
904 return ret;
905 return sprintf(buf, "%#x\n", (value & 0x1));
906 }
907
dbbrstn_show(struct device * dev,struct device_attribute * attr,char * buf)908 static ssize_t dbbrstn_show(struct device *dev,
909 struct device_attribute *attr, char *buf)
910 {
911 struct ab8500 *ab8500;
912 int ret;
913 u8 value;
914
915 ab8500 = dev_get_drvdata(dev);
916
917 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
918 AB9540_MODEM_CTRL2_REG, &value);
919 if (ret < 0)
920 return ret;
921
922 return sprintf(buf, "%d\n",
923 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
924 }
925
dbbrstn_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)926 static ssize_t dbbrstn_store(struct device *dev,
927 struct device_attribute *attr, const char *buf, size_t count)
928 {
929 struct ab8500 *ab8500;
930 int ret = count;
931 int err;
932 u8 bitvalues;
933
934 ab8500 = dev_get_drvdata(dev);
935
936 if (count > 0) {
937 switch (buf[0]) {
938 case '0':
939 bitvalues = 0;
940 break;
941 case '1':
942 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
943 break;
944 default:
945 goto exit;
946 }
947
948 err = mask_and_set_register_interruptible(ab8500,
949 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
950 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
951 if (err)
952 dev_info(ab8500->dev,
953 "Failed to set DBBRSTN %c, err %#x\n",
954 buf[0], err);
955 }
956
957 exit:
958 return ret;
959 }
960
961 static DEVICE_ATTR_RO(chip_id);
962 static DEVICE_ATTR_RO(switch_off_status);
963 static DEVICE_ATTR_RO(turn_on_status);
964 static DEVICE_ATTR_RO(turn_on_status_2);
965 static DEVICE_ATTR_RW(dbbrstn);
966
967 static struct attribute *ab8500_sysfs_entries[] = {
968 &dev_attr_chip_id.attr,
969 &dev_attr_switch_off_status.attr,
970 &dev_attr_turn_on_status.attr,
971 NULL,
972 };
973
974 static struct attribute *ab8505_sysfs_entries[] = {
975 &dev_attr_turn_on_status_2.attr,
976 NULL,
977 };
978
979 static struct attribute *ab9540_sysfs_entries[] = {
980 &dev_attr_chip_id.attr,
981 &dev_attr_switch_off_status.attr,
982 &dev_attr_turn_on_status.attr,
983 &dev_attr_dbbrstn.attr,
984 NULL,
985 };
986
987 static const struct attribute_group ab8500_attr_group = {
988 .attrs = ab8500_sysfs_entries,
989 };
990
991 static const struct attribute_group ab8505_attr_group = {
992 .attrs = ab8505_sysfs_entries,
993 };
994
995 static const struct attribute_group ab9540_attr_group = {
996 .attrs = ab9540_sysfs_entries,
997 };
998
ab8500_probe(struct platform_device * pdev)999 static int ab8500_probe(struct platform_device *pdev)
1000 {
1001 static const char * const switch_off_status[] = {
1002 "Swoff bit programming",
1003 "Thermal protection activation",
1004 "Vbat lower then BattOk falling threshold",
1005 "Watchdog expired",
1006 "Non presence of 32kHz clock",
1007 "Battery level lower than power on reset threshold",
1008 "Power on key 1 pressed longer than 10 seconds",
1009 "DB8500 thermal shutdown"};
1010 static const char * const turn_on_status[] = {
1011 "Battery rising (Vbat)",
1012 "Power On Key 1 dbF",
1013 "Power On Key 2 dbF",
1014 "RTC Alarm",
1015 "Main Charger Detect",
1016 "Vbus Detect (USB)",
1017 "USB ID Detect",
1018 "UART Factory Mode Detect"};
1019 const struct platform_device_id *platid = platform_get_device_id(pdev);
1020 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1021 struct device_node *np = pdev->dev.of_node;
1022 struct ab8500 *ab8500;
1023 int ret;
1024 int i;
1025 int irq;
1026 u8 value;
1027
1028 ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
1029 if (!ab8500)
1030 return -ENOMEM;
1031
1032 ab8500->dev = &pdev->dev;
1033
1034 irq = platform_get_irq(pdev, 0);
1035 if (irq < 0)
1036 return irq;
1037
1038 ab8500->irq = irq;
1039
1040 ab8500->read = ab8500_prcmu_read;
1041 ab8500->write = ab8500_prcmu_write;
1042 ab8500->write_masked = ab8500_prcmu_write_masked;
1043
1044 mutex_init(&ab8500->lock);
1045 mutex_init(&ab8500->irq_lock);
1046 atomic_set(&ab8500->transfer_ongoing, 0);
1047
1048 platform_set_drvdata(pdev, ab8500);
1049
1050 if (platid)
1051 version = platid->driver_data;
1052
1053 if (version != AB8500_VERSION_UNDEFINED)
1054 ab8500->version = version;
1055 else {
1056 ret = get_register_interruptible(ab8500, AB8500_MISC,
1057 AB8500_IC_NAME_REG, &value);
1058 if (ret < 0) {
1059 dev_err(&pdev->dev, "could not probe HW\n");
1060 return ret;
1061 }
1062
1063 ab8500->version = value;
1064 }
1065
1066 ret = get_register_interruptible(ab8500, AB8500_MISC,
1067 AB8500_REV_REG, &value);
1068 if (ret < 0)
1069 return ret;
1070
1071 ab8500->chip_id = value;
1072
1073 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1074 ab8500_version_str[ab8500->version],
1075 ab8500->chip_id >> 4,
1076 ab8500->chip_id & 0x0F);
1077
1078 /* Configure AB8540 */
1079 if (is_ab8540(ab8500)) {
1080 ab8500->mask_size = AB8540_NUM_IRQ_REGS;
1081 ab8500->irq_reg_offset = ab8540_irq_regoffset;
1082 ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM;
1083 } /* Configure AB8500 or AB9540 IRQ */
1084 else if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1085 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1086 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1087 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1088 } else {
1089 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1090 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1091 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1092 }
1093 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1094 GFP_KERNEL);
1095 if (!ab8500->mask)
1096 return -ENOMEM;
1097 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1098 GFP_KERNEL);
1099 if (!ab8500->oldmask)
1100 return -ENOMEM;
1101
1102 /*
1103 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1104 * 0x01 Swoff bit programming
1105 * 0x02 Thermal protection activation
1106 * 0x04 Vbat lower then BattOk falling threshold
1107 * 0x08 Watchdog expired
1108 * 0x10 Non presence of 32kHz clock
1109 * 0x20 Battery level lower than power on reset threshold
1110 * 0x40 Power on key 1 pressed longer than 10 seconds
1111 * 0x80 DB8500 thermal shutdown
1112 */
1113
1114 ret = get_register_interruptible(ab8500, AB8500_RTC,
1115 AB8500_SWITCH_OFF_STATUS, &value);
1116 if (ret < 0)
1117 return ret;
1118 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1119
1120 if (value) {
1121 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1122 if (value & 1)
1123 pr_cont(" \"%s\"", switch_off_status[i]);
1124 value = value >> 1;
1125
1126 }
1127 pr_cont("\n");
1128 } else {
1129 pr_cont(" None\n");
1130 }
1131 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1132 AB8500_TURN_ON_STATUS, &value);
1133 if (ret < 0)
1134 return ret;
1135 dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value);
1136
1137 if (value) {
1138 for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) {
1139 if (value & 1)
1140 pr_cont("\"%s\" ", turn_on_status[i]);
1141 value = value >> 1;
1142 }
1143 pr_cont("\n");
1144 } else {
1145 pr_cont("None\n");
1146 }
1147
1148 if (is_ab9540(ab8500)) {
1149 ret = get_register_interruptible(ab8500, AB8500_CHARGER,
1150 AB8500_CH_USBCH_STAT1_REG, &value);
1151 if (ret < 0)
1152 return ret;
1153 if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100))
1154 ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
1155 AB8500_VBUS_DET);
1156 }
1157
1158 /* Clear and mask all interrupts */
1159 for (i = 0; i < ab8500->mask_size; i++) {
1160 /*
1161 * Interrupt register 12 doesn't exist prior to AB8500 version
1162 * 2.0
1163 */
1164 if (ab8500->irq_reg_offset[i] == 11 &&
1165 is_ab8500_1p1_or_earlier(ab8500))
1166 continue;
1167
1168 if (ab8500->irq_reg_offset[i] < 0)
1169 continue;
1170
1171 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1172 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1173 &value);
1174 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1175 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1176 }
1177
1178 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1179 if (ret)
1180 return ret;
1181
1182 for (i = 0; i < ab8500->mask_size; i++)
1183 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1184
1185 ret = ab8500_irq_init(ab8500, np);
1186 if (ret)
1187 return ret;
1188
1189 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1190 ab8500_hierarchical_irq,
1191 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1192 "ab8500", ab8500);
1193 if (ret)
1194 return ret;
1195
1196 if (is_ab9540(ab8500))
1197 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1198 ARRAY_SIZE(ab9540_devs), NULL,
1199 0, ab8500->domain);
1200 else if (is_ab8540(ab8500)) {
1201 ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
1202 ARRAY_SIZE(ab8540_devs), NULL,
1203 0, ab8500->domain);
1204 if (ret)
1205 return ret;
1206
1207 if (is_ab8540_1p2_or_earlier(ab8500))
1208 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut1_devs,
1209 ARRAY_SIZE(ab8540_cut1_devs), NULL,
1210 0, ab8500->domain);
1211 else /* ab8540 >= cut2 */
1212 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut2_devs,
1213 ARRAY_SIZE(ab8540_cut2_devs), NULL,
1214 0, ab8500->domain);
1215 } else if (is_ab8505(ab8500))
1216 ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
1217 ARRAY_SIZE(ab8505_devs), NULL,
1218 0, ab8500->domain);
1219 else
1220 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1221 ARRAY_SIZE(ab8500_devs), NULL,
1222 0, ab8500->domain);
1223 if (ret)
1224 return ret;
1225
1226 /* Add battery management devices */
1227 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1228 ARRAY_SIZE(ab8500_bm_devs), NULL,
1229 0, ab8500->domain);
1230 if (ret)
1231 dev_err(ab8500->dev, "error adding bm devices\n");
1232
1233 if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1234 ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
1235 ret = sysfs_create_group(&ab8500->dev->kobj,
1236 &ab9540_attr_group);
1237 else
1238 ret = sysfs_create_group(&ab8500->dev->kobj,
1239 &ab8500_attr_group);
1240
1241 if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1242 ab8500->chip_id >= AB8500_CUT2P0)
1243 ret = sysfs_create_group(&ab8500->dev->kobj,
1244 &ab8505_attr_group);
1245
1246 if (ret)
1247 dev_err(ab8500->dev, "error creating sysfs entries\n");
1248
1249 return ret;
1250 }
1251
1252 static const struct platform_device_id ab8500_id[] = {
1253 { "ab8500-core", AB8500_VERSION_AB8500 },
1254 { "ab8505-core", AB8500_VERSION_AB8505 },
1255 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1256 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1257 { }
1258 };
1259
1260 static struct platform_driver ab8500_core_driver = {
1261 .driver = {
1262 .name = "ab8500-core",
1263 .suppress_bind_attrs = true,
1264 },
1265 .probe = ab8500_probe,
1266 .id_table = ab8500_id,
1267 };
1268
ab8500_core_init(void)1269 static int __init ab8500_core_init(void)
1270 {
1271 return platform_driver_register(&ab8500_core_driver);
1272 }
1273 core_initcall(ab8500_core_init);
1274