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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / mfd / ab8500-core.c
blobd295941c9a3db63ab75408470ac8edfefbdb2cb2
1 /*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License v2
5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
7 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/slab.h>
12 #include <linux/init.h>
13 #include <linux/irq.h>
14 #include <linux/delay.h>
15 #include <linux/interrupt.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/mfd/core.h>
19 #include <linux/mfd/abx500.h>
20 #include <linux/mfd/abx500/ab8500.h>
21 #include <linux/regulator/ab8500.h>
22
23 /*
24 * Interrupt register offsets
25 * Bank : 0x0E
26 */
27 #define AB8500_IT_SOURCE1_REG 0x00
28 #define AB8500_IT_SOURCE2_REG 0x01
29 #define AB8500_IT_SOURCE3_REG 0x02
30 #define AB8500_IT_SOURCE4_REG 0x03
31 #define AB8500_IT_SOURCE5_REG 0x04
32 #define AB8500_IT_SOURCE6_REG 0x05
33 #define AB8500_IT_SOURCE7_REG 0x06
34 #define AB8500_IT_SOURCE8_REG 0x07
35 #define AB8500_IT_SOURCE19_REG 0x12
36 #define AB8500_IT_SOURCE20_REG 0x13
37 #define AB8500_IT_SOURCE21_REG 0x14
38 #define AB8500_IT_SOURCE22_REG 0x15
39 #define AB8500_IT_SOURCE23_REG 0x16
40 #define AB8500_IT_SOURCE24_REG 0x17
41
42 /*
43 * latch registers
44 */
45 #define AB8500_IT_LATCH1_REG 0x20
46 #define AB8500_IT_LATCH2_REG 0x21
47 #define AB8500_IT_LATCH3_REG 0x22
48 #define AB8500_IT_LATCH4_REG 0x23
49 #define AB8500_IT_LATCH5_REG 0x24
50 #define AB8500_IT_LATCH6_REG 0x25
51 #define AB8500_IT_LATCH7_REG 0x26
52 #define AB8500_IT_LATCH8_REG 0x27
53 #define AB8500_IT_LATCH9_REG 0x28
54 #define AB8500_IT_LATCH10_REG 0x29
55 #define AB8500_IT_LATCH12_REG 0x2B
56 #define AB8500_IT_LATCH19_REG 0x32
57 #define AB8500_IT_LATCH20_REG 0x33
58 #define AB8500_IT_LATCH21_REG 0x34
59 #define AB8500_IT_LATCH22_REG 0x35
60 #define AB8500_IT_LATCH23_REG 0x36
61 #define AB8500_IT_LATCH24_REG 0x37
62
63 /*
64 * mask registers
65 */
66
67 #define AB8500_IT_MASK1_REG 0x40
68 #define AB8500_IT_MASK2_REG 0x41
69 #define AB8500_IT_MASK3_REG 0x42
70 #define AB8500_IT_MASK4_REG 0x43
71 #define AB8500_IT_MASK5_REG 0x44
72 #define AB8500_IT_MASK6_REG 0x45
73 #define AB8500_IT_MASK7_REG 0x46
74 #define AB8500_IT_MASK8_REG 0x47
75 #define AB8500_IT_MASK9_REG 0x48
76 #define AB8500_IT_MASK10_REG 0x49
77 #define AB8500_IT_MASK11_REG 0x4A
78 #define AB8500_IT_MASK12_REG 0x4B
79 #define AB8500_IT_MASK13_REG 0x4C
80 #define AB8500_IT_MASK14_REG 0x4D
81 #define AB8500_IT_MASK15_REG 0x4E
82 #define AB8500_IT_MASK16_REG 0x4F
83 #define AB8500_IT_MASK17_REG 0x50
84 #define AB8500_IT_MASK18_REG 0x51
85 #define AB8500_IT_MASK19_REG 0x52
86 #define AB8500_IT_MASK20_REG 0x53
87 #define AB8500_IT_MASK21_REG 0x54
88 #define AB8500_IT_MASK22_REG 0x55
89 #define AB8500_IT_MASK23_REG 0x56
90 #define AB8500_IT_MASK24_REG 0x57
91
92 #define AB8500_REV_REG 0x80
93 #define AB8500_SWITCH_OFF_STATUS 0x00
94
95 #define AB8500_TURN_ON_STATUS 0x00
96
97 /*
98 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
99 * numbers are indexed into this array with (num / 8).
100 *
101 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
102 * offset 0.
103 */
104 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
105 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
106 };
107
108 static int ab8500_get_chip_id(struct device *dev)
109 {
110 struct ab8500 *ab8500;
111
112 if (!dev)
113 return -EINVAL;
114 ab8500 = dev_get_drvdata(dev->parent);
115 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
116 }
117
118 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
119 u8 reg, u8 data)
120 {
121 int ret;
122 /*
123 * Put the u8 bank and u8 register together into a an u16.
124 * The bank on higher 8 bits and register in lower 8 bits.
125 * */
126 u16 addr = ((u16)bank) << 8 | reg;
127
128 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
129
130 ret = mutex_lock_interruptible(&ab8500->lock);
131 if (ret)
132 return ret;
133
134 ret = ab8500->write(ab8500, addr, data);
135 if (ret < 0)
136 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
137 addr, ret);
138 mutex_unlock(&ab8500->lock);
139
140 return ret;
141 }
142
143 static int ab8500_set_register(struct device *dev, u8 bank,
144 u8 reg, u8 value)
145 {
146 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
147
148 return set_register_interruptible(ab8500, bank, reg, value);
149 }
150
151 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
152 u8 reg, u8 *value)
153 {
154 int ret;
155 /* put the u8 bank and u8 reg together into a an u16.
156 * bank on higher 8 bits and reg in lower */
157 u16 addr = ((u16)bank) << 8 | reg;
158
159 ret = mutex_lock_interruptible(&ab8500->lock);
160 if (ret)
161 return ret;
162
163 ret = ab8500->read(ab8500, addr);
164 if (ret < 0)
165 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
166 addr, ret);
167 else
168 *value = ret;
169
170 mutex_unlock(&ab8500->lock);
171 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
172
173 return ret;
174 }
175
176 static int ab8500_get_register(struct device *dev, u8 bank,
177 u8 reg, u8 *value)
178 {
179 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
180
181 return get_register_interruptible(ab8500, bank, reg, value);
182 }
183
184 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
185 u8 reg, u8 bitmask, u8 bitvalues)
186 {
187 int ret;
188 u8 data;
189 /* put the u8 bank and u8 reg together into a an u16.
190 * bank on higher 8 bits and reg in lower */
191 u16 addr = ((u16)bank) << 8 | reg;
192
193 ret = mutex_lock_interruptible(&ab8500->lock);
194 if (ret)
195 return ret;
196
197 ret = ab8500->read(ab8500, addr);
198 if (ret < 0) {
199 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
200 addr, ret);
201 goto out;
202 }
203
204 data = (u8)ret;
205 data = (~bitmask & data) | (bitmask & bitvalues);
206
207 ret = ab8500->write(ab8500, addr, data);
208 if (ret < 0)
209 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
210 addr, ret);
211
212 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data);
213 out:
214 mutex_unlock(&ab8500->lock);
215 return ret;
216 }
217
218 static int ab8500_mask_and_set_register(struct device *dev,
219 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
220 {
221 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
222
223 return mask_and_set_register_interruptible(ab8500, bank, reg,
224 bitmask, bitvalues);
225
226 }
227
228 static struct abx500_ops ab8500_ops = {
229 .get_chip_id = ab8500_get_chip_id,
230 .get_register = ab8500_get_register,
231 .set_register = ab8500_set_register,
232 .get_register_page = NULL,
233 .set_register_page = NULL,
234 .mask_and_set_register = ab8500_mask_and_set_register,
235 .event_registers_startup_state_get = NULL,
236 .startup_irq_enabled = NULL,
237 };
238
239 static void ab8500_irq_lock(struct irq_data *data)
240 {
241 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
242
243 mutex_lock(&ab8500->irq_lock);
244 }
245
246 static void ab8500_irq_sync_unlock(struct irq_data *data)
247 {
248 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
249 int i;
250
251 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
252 u8 old = ab8500->oldmask[i];
253 u8 new = ab8500->mask[i];
254 int reg;
255
256 if (new == old)
257 continue;
258
259 /* Interrupt register 12 doesn't exist prior to version 2.0 */
260 if (ab8500_irq_regoffset[i] == 11 &&
261 ab8500->chip_id < AB8500_CUT2P0)
262 continue;
263
264 ab8500->oldmask[i] = new;
265
266 reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i];
267 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
268 }
269
270 mutex_unlock(&ab8500->irq_lock);
271 }
272
273 static void ab8500_irq_mask(struct irq_data *data)
274 {
275 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
276 int offset = data->irq - ab8500->irq_base;
277 int index = offset / 8;
278 int mask = 1 << (offset % 8);
279
280 ab8500->mask[index] |= mask;
281 }
282
283 static void ab8500_irq_unmask(struct irq_data *data)
284 {
285 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
286 int offset = data->irq - ab8500->irq_base;
287 int index = offset / 8;
288 int mask = 1 << (offset % 8);
289
290 ab8500->mask[index] &= ~mask;
291 }
292
293 static struct irq_chip ab8500_irq_chip = {
294 .name = "ab8500",
295 .irq_bus_lock = ab8500_irq_lock,
296 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
297 .irq_mask = ab8500_irq_mask,
298 .irq_disable = ab8500_irq_mask,
299 .irq_unmask = ab8500_irq_unmask,
300 };
301
302 static irqreturn_t ab8500_irq(int irq, void *dev)
303 {
304 struct ab8500 *ab8500 = dev;
305 int i;
306
307 dev_vdbg(ab8500->dev, "interrupt\n");
308
309 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
310 int regoffset = ab8500_irq_regoffset[i];
311 int status;
312 u8 value;
313
314 /* Interrupt register 12 doesn't exist prior to version 2.0 */
315 if (regoffset == 11 && ab8500->chip_id < AB8500_CUT2P0)
316 continue;
317
318 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
319 AB8500_IT_LATCH1_REG + regoffset, &value);
320 if (status < 0 || value == 0)
321 continue;
322
323 do {
324 int bit = __ffs(value);
325 int line = i * 8 + bit;
326
327 handle_nested_irq(ab8500->irq_base + line);
328 value &= ~(1 << bit);
329 } while (value);
330 }
331
332 return IRQ_HANDLED;
333 }
334
335 static int ab8500_irq_init(struct ab8500 *ab8500)
336 {
337 int base = ab8500->irq_base;
338 int irq;
339
340 for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
341 irq_set_chip_data(irq, ab8500);
342 irq_set_chip_and_handler(irq, &ab8500_irq_chip,
343 handle_simple_irq);
344 irq_set_nested_thread(irq, 1);
345 #ifdef CONFIG_ARM
346 set_irq_flags(irq, IRQF_VALID);
347 #else
348 irq_set_noprobe(irq);
349 #endif
350 }
351
352 return 0;
353 }
354
355 static void ab8500_irq_remove(struct ab8500 *ab8500)
356 {
357 int base = ab8500->irq_base;
358 int irq;
359
360 for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
361 #ifdef CONFIG_ARM
362 set_irq_flags(irq, 0);
363 #endif
364 irq_set_chip_and_handler(irq, NULL, NULL);
365 irq_set_chip_data(irq, NULL);
366 }
367 }
368
369 static struct resource __devinitdata ab8500_gpio_resources[] = {
370 {
371 .name = "GPIO_INT6",
372 .start = AB8500_INT_GPIO6R,
373 .end = AB8500_INT_GPIO41F,
374 .flags = IORESOURCE_IRQ,
375 }
376 };
377
378 static struct resource __devinitdata ab8500_gpadc_resources[] = {
379 {
380 .name = "HW_CONV_END",
381 .start = AB8500_INT_GP_HW_ADC_CONV_END,
382 .end = AB8500_INT_GP_HW_ADC_CONV_END,
383 .flags = IORESOURCE_IRQ,
384 },
385 {
386 .name = "SW_CONV_END",
387 .start = AB8500_INT_GP_SW_ADC_CONV_END,
388 .end = AB8500_INT_GP_SW_ADC_CONV_END,
389 .flags = IORESOURCE_IRQ,
390 },
391 };
392
393 static struct resource __devinitdata ab8500_rtc_resources[] = {
394 {
395 .name = "60S",
396 .start = AB8500_INT_RTC_60S,
397 .end = AB8500_INT_RTC_60S,
398 .flags = IORESOURCE_IRQ,
399 },
400 {
401 .name = "ALARM",
402 .start = AB8500_INT_RTC_ALARM,
403 .end = AB8500_INT_RTC_ALARM,
404 .flags = IORESOURCE_IRQ,
405 },
406 };
407
408 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
409 {
410 .name = "ONKEY_DBF",
411 .start = AB8500_INT_PON_KEY1DB_F,
412 .end = AB8500_INT_PON_KEY1DB_F,
413 .flags = IORESOURCE_IRQ,
414 },
415 {
416 .name = "ONKEY_DBR",
417 .start = AB8500_INT_PON_KEY1DB_R,
418 .end = AB8500_INT_PON_KEY1DB_R,
419 .flags = IORESOURCE_IRQ,
420 },
421 };
422
423 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
424 {
425 .name = "ACC_DETECT_1DB_F",
426 .start = AB8500_INT_ACC_DETECT_1DB_F,
427 .end = AB8500_INT_ACC_DETECT_1DB_F,
428 .flags = IORESOURCE_IRQ,
429 },
430 {
431 .name = "ACC_DETECT_1DB_R",
432 .start = AB8500_INT_ACC_DETECT_1DB_R,
433 .end = AB8500_INT_ACC_DETECT_1DB_R,
434 .flags = IORESOURCE_IRQ,
435 },
436 {
437 .name = "ACC_DETECT_21DB_F",
438 .start = AB8500_INT_ACC_DETECT_21DB_F,
439 .end = AB8500_INT_ACC_DETECT_21DB_F,
440 .flags = IORESOURCE_IRQ,
441 },
442 {
443 .name = "ACC_DETECT_21DB_R",
444 .start = AB8500_INT_ACC_DETECT_21DB_R,
445 .end = AB8500_INT_ACC_DETECT_21DB_R,
446 .flags = IORESOURCE_IRQ,
447 },
448 {
449 .name = "ACC_DETECT_22DB_F",
450 .start = AB8500_INT_ACC_DETECT_22DB_F,
451 .end = AB8500_INT_ACC_DETECT_22DB_F,
452 .flags = IORESOURCE_IRQ,
453 },
454 {
455 .name = "ACC_DETECT_22DB_R",
456 .start = AB8500_INT_ACC_DETECT_22DB_R,
457 .end = AB8500_INT_ACC_DETECT_22DB_R,
458 .flags = IORESOURCE_IRQ,
459 },
460 };
461
462 static struct resource __devinitdata ab8500_charger_resources[] = {
463 {
464 .name = "MAIN_CH_UNPLUG_DET",
465 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
466 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
467 .flags = IORESOURCE_IRQ,
468 },
469 {
470 .name = "MAIN_CHARGE_PLUG_DET",
471 .start = AB8500_INT_MAIN_CH_PLUG_DET,
472 .end = AB8500_INT_MAIN_CH_PLUG_DET,
473 .flags = IORESOURCE_IRQ,
474 },
475 {
476 .name = "VBUS_DET_R",
477 .start = AB8500_INT_VBUS_DET_R,
478 .end = AB8500_INT_VBUS_DET_R,
479 .flags = IORESOURCE_IRQ,
480 },
481 {
482 .name = "VBUS_DET_F",
483 .start = AB8500_INT_VBUS_DET_F,
484 .end = AB8500_INT_VBUS_DET_F,
485 .flags = IORESOURCE_IRQ,
486 },
487 {
488 .name = "USB_LINK_STATUS",
489 .start = AB8500_INT_USB_LINK_STATUS,
490 .end = AB8500_INT_USB_LINK_STATUS,
491 .flags = IORESOURCE_IRQ,
492 },
493 {
494 .name = "USB_CHARGE_DET_DONE",
495 .start = AB8500_INT_USB_CHG_DET_DONE,
496 .end = AB8500_INT_USB_CHG_DET_DONE,
497 .flags = IORESOURCE_IRQ,
498 },
499 {
500 .name = "VBUS_OVV",
501 .start = AB8500_INT_VBUS_OVV,
502 .end = AB8500_INT_VBUS_OVV,
503 .flags = IORESOURCE_IRQ,
504 },
505 {
506 .name = "USB_CH_TH_PROT_R",
507 .start = AB8500_INT_USB_CH_TH_PROT_R,
508 .end = AB8500_INT_USB_CH_TH_PROT_R,
509 .flags = IORESOURCE_IRQ,
510 },
511 {
512 .name = "USB_CH_TH_PROT_F",
513 .start = AB8500_INT_USB_CH_TH_PROT_F,
514 .end = AB8500_INT_USB_CH_TH_PROT_F,
515 .flags = IORESOURCE_IRQ,
516 },
517 {
518 .name = "MAIN_EXT_CH_NOT_OK",
519 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
520 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
521 .flags = IORESOURCE_IRQ,
522 },
523 {
524 .name = "MAIN_CH_TH_PROT_R",
525 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
526 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
527 .flags = IORESOURCE_IRQ,
528 },
529 {
530 .name = "MAIN_CH_TH_PROT_F",
531 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
532 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
533 .flags = IORESOURCE_IRQ,
534 },
535 {
536 .name = "USB_CHARGER_NOT_OKR",
537 .start = AB8500_INT_USB_CHARGER_NOT_OK,
538 .end = AB8500_INT_USB_CHARGER_NOT_OK,
539 .flags = IORESOURCE_IRQ,
540 },
541 {
542 .name = "USB_CHARGER_NOT_OKF",
543 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
544 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
545 .flags = IORESOURCE_IRQ,
546 },
547 {
548 .name = "CH_WD_EXP",
549 .start = AB8500_INT_CH_WD_EXP,
550 .end = AB8500_INT_CH_WD_EXP,
551 .flags = IORESOURCE_IRQ,
552 },
553 };
554
555 static struct resource __devinitdata ab8500_btemp_resources[] = {
556 {
557 .name = "BAT_CTRL_INDB",
558 .start = AB8500_INT_BAT_CTRL_INDB,
559 .end = AB8500_INT_BAT_CTRL_INDB,
560 .flags = IORESOURCE_IRQ,
561 },
562 {
563 .name = "BTEMP_LOW",
564 .start = AB8500_INT_BTEMP_LOW,
565 .end = AB8500_INT_BTEMP_LOW,
566 .flags = IORESOURCE_IRQ,
567 },
568 {
569 .name = "BTEMP_HIGH",
570 .start = AB8500_INT_BTEMP_HIGH,
571 .end = AB8500_INT_BTEMP_HIGH,
572 .flags = IORESOURCE_IRQ,
573 },
574 {
575 .name = "BTEMP_LOW_MEDIUM",
576 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
577 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
578 .flags = IORESOURCE_IRQ,
579 },
580 {
581 .name = "BTEMP_MEDIUM_HIGH",
582 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
583 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
584 .flags = IORESOURCE_IRQ,
585 },
586 };
587
588 static struct resource __devinitdata ab8500_fg_resources[] = {
589 {
590 .name = "NCONV_ACCU",
591 .start = AB8500_INT_CCN_CONV_ACC,
592 .end = AB8500_INT_CCN_CONV_ACC,
593 .flags = IORESOURCE_IRQ,
594 },
595 {
596 .name = "BATT_OVV",
597 .start = AB8500_INT_BATT_OVV,
598 .end = AB8500_INT_BATT_OVV,
599 .flags = IORESOURCE_IRQ,
600 },
601 {
602 .name = "LOW_BAT_F",
603 .start = AB8500_INT_LOW_BAT_F,
604 .end = AB8500_INT_LOW_BAT_F,
605 .flags = IORESOURCE_IRQ,
606 },
607 {
608 .name = "LOW_BAT_R",
609 .start = AB8500_INT_LOW_BAT_R,
610 .end = AB8500_INT_LOW_BAT_R,
611 .flags = IORESOURCE_IRQ,
612 },
613 {
614 .name = "CC_INT_CALIB",
615 .start = AB8500_INT_CC_INT_CALIB,
616 .end = AB8500_INT_CC_INT_CALIB,
617 .flags = IORESOURCE_IRQ,
618 },
619 };
620
621 static struct resource __devinitdata ab8500_chargalg_resources[] = {};
622
623 #ifdef CONFIG_DEBUG_FS
624 static struct resource __devinitdata ab8500_debug_resources[] = {
625 {
626 .name = "IRQ_FIRST",
627 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
628 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
629 .flags = IORESOURCE_IRQ,
630 },
631 {
632 .name = "IRQ_LAST",
633 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
634 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
635 .flags = IORESOURCE_IRQ,
636 },
637 };
638 #endif
639
640 static struct resource __devinitdata ab8500_usb_resources[] = {
641 {
642 .name = "ID_WAKEUP_R",
643 .start = AB8500_INT_ID_WAKEUP_R,
644 .end = AB8500_INT_ID_WAKEUP_R,
645 .flags = IORESOURCE_IRQ,
646 },
647 {
648 .name = "ID_WAKEUP_F",
649 .start = AB8500_INT_ID_WAKEUP_F,
650 .end = AB8500_INT_ID_WAKEUP_F,
651 .flags = IORESOURCE_IRQ,
652 },
653 {
654 .name = "VBUS_DET_F",
655 .start = AB8500_INT_VBUS_DET_F,
656 .end = AB8500_INT_VBUS_DET_F,
657 .flags = IORESOURCE_IRQ,
658 },
659 {
660 .name = "VBUS_DET_R",
661 .start = AB8500_INT_VBUS_DET_R,
662 .end = AB8500_INT_VBUS_DET_R,
663 .flags = IORESOURCE_IRQ,
664 },
665 {
666 .name = "USB_LINK_STATUS",
667 .start = AB8500_INT_USB_LINK_STATUS,
668 .end = AB8500_INT_USB_LINK_STATUS,
669 .flags = IORESOURCE_IRQ,
670 },
671 {
672 .name = "USB_ADP_PROBE_PLUG",
673 .start = AB8500_INT_ADP_PROBE_PLUG,
674 .end = AB8500_INT_ADP_PROBE_PLUG,
675 .flags = IORESOURCE_IRQ,
676 },
677 {
678 .name = "USB_ADP_PROBE_UNPLUG",
679 .start = AB8500_INT_ADP_PROBE_UNPLUG,
680 .end = AB8500_INT_ADP_PROBE_UNPLUG,
681 .flags = IORESOURCE_IRQ,
682 },
683 };
684
685 static struct resource __devinitdata ab8500_temp_resources[] = {
686 {
687 .name = "AB8500_TEMP_WARM",
688 .start = AB8500_INT_TEMP_WARM,
689 .end = AB8500_INT_TEMP_WARM,
690 .flags = IORESOURCE_IRQ,
691 },
692 };
693
694 static struct mfd_cell __devinitdata ab8500_devs[] = {
695 #ifdef CONFIG_DEBUG_FS
696 {
697 .name = "ab8500-debug",
698 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
699 .resources = ab8500_debug_resources,
700 },
701 #endif
702 {
703 .name = "ab8500-sysctrl",
704 },
705 {
706 .name = "ab8500-regulator",
707 },
708 {
709 .name = "ab8500-gpio",
710 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
711 .resources = ab8500_gpio_resources,
712 },
713 {
714 .name = "ab8500-gpadc",
715 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
716 .resources = ab8500_gpadc_resources,
717 },
718 {
719 .name = "ab8500-rtc",
720 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
721 .resources = ab8500_rtc_resources,
722 },
723 {
724 .name = "ab8500-charger",
725 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
726 .resources = ab8500_charger_resources,
727 },
728 {
729 .name = "ab8500-btemp",
730 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
731 .resources = ab8500_btemp_resources,
732 },
733 {
734 .name = "ab8500-fg",
735 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
736 .resources = ab8500_fg_resources,
737 },
738 {
739 .name = "ab8500-chargalg",
740 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
741 .resources = ab8500_chargalg_resources,
742 },
743 {
744 .name = "ab8500-acc-det",
745 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
746 .resources = ab8500_av_acc_detect_resources,
747 },
748 {
749 .name = "ab8500-codec",
750 },
751 {
752 .name = "ab8500-usb",
753 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
754 .resources = ab8500_usb_resources,
755 },
756 {
757 .name = "ab8500-poweron-key",
758 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
759 .resources = ab8500_poweronkey_db_resources,
760 },
761 {
762 .name = "ab8500-pwm",
763 .id = 1,
764 },
765 {
766 .name = "ab8500-pwm",
767 .id = 2,
768 },
769 {
770 .name = "ab8500-pwm",
771 .id = 3,
772 },
773 { .name = "ab8500-leds", },
774 {
775 .name = "ab8500-denc",
776 },
777 {
778 .name = "ab8500-temp",
779 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
780 .resources = ab8500_temp_resources,
781 },
782 };
783
784 static ssize_t show_chip_id(struct device *dev,
785 struct device_attribute *attr, char *buf)
786 {
787 struct ab8500 *ab8500;
788
789 ab8500 = dev_get_drvdata(dev);
790 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
791 }
792
793 /*
794 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
795 * 0x01 Swoff bit programming
796 * 0x02 Thermal protection activation
797 * 0x04 Vbat lower then BattOk falling threshold
798 * 0x08 Watchdog expired
799 * 0x10 Non presence of 32kHz clock
800 * 0x20 Battery level lower than power on reset threshold
801 * 0x40 Power on key 1 pressed longer than 10 seconds
802 * 0x80 DB8500 thermal shutdown
803 */
804 static ssize_t show_switch_off_status(struct device *dev,
805 struct device_attribute *attr, char *buf)
806 {
807 int ret;
808 u8 value;
809 struct ab8500 *ab8500;
810
811 ab8500 = dev_get_drvdata(dev);
812 ret = get_register_interruptible(ab8500, AB8500_RTC,
813 AB8500_SWITCH_OFF_STATUS, &value);
814 if (ret < 0)
815 return ret;
816 return sprintf(buf, "%#x\n", value);
817 }
818
819 /*
820 * ab8500 has turned on due to (TURN_ON_STATUS):
821 * 0x01 PORnVbat
822 * 0x02 PonKey1dbF
823 * 0x04 PonKey2dbF
824 * 0x08 RTCAlarm
825 * 0x10 MainChDet
826 * 0x20 VbusDet
827 * 0x40 UsbIDDetect
828 * 0x80 Reserved
829 */
830 static ssize_t show_turn_on_status(struct device *dev,
831 struct device_attribute *attr, char *buf)
832 {
833 int ret;
834 u8 value;
835 struct ab8500 *ab8500;
836
837 ab8500 = dev_get_drvdata(dev);
838 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
839 AB8500_TURN_ON_STATUS, &value);
840 if (ret < 0)
841 return ret;
842 return sprintf(buf, "%#x\n", value);
843 }
844
845 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
846 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
847 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
848
849 static struct attribute *ab8500_sysfs_entries[] = {
850 &dev_attr_chip_id.attr,
851 &dev_attr_switch_off_status.attr,
852 &dev_attr_turn_on_status.attr,
853 NULL,
854 };
855
856 static struct attribute_group ab8500_attr_group = {
857 .attrs = ab8500_sysfs_entries,
858 };
859
860 int __devinit ab8500_init(struct ab8500 *ab8500)
861 {
862 struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
863 int ret;
864 int i;
865 u8 value;
866
867 if (plat)
868 ab8500->irq_base = plat->irq_base;
869
870 mutex_init(&ab8500->lock);
871 mutex_init(&ab8500->irq_lock);
872
873 ret = get_register_interruptible(ab8500, AB8500_MISC,
874 AB8500_REV_REG, &value);
875 if (ret < 0)
876 return ret;
877
878 switch (value) {
879 case AB8500_CUT1P0:
880 case AB8500_CUT1P1:
881 case AB8500_CUT2P0:
882 case AB8500_CUT3P0:
883 case AB8500_CUT3P3:
884 dev_info(ab8500->dev, "detected chip, revision: %#x\n", value);
885 break;
886 default:
887 dev_err(ab8500->dev, "unknown chip, revision: %#x\n", value);
888 return -EINVAL;
889 }
890 ab8500->chip_id = value;
891
892 /*
893 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
894 * 0x01 Swoff bit programming
895 * 0x02 Thermal protection activation
896 * 0x04 Vbat lower then BattOk falling threshold
897 * 0x08 Watchdog expired
898 * 0x10 Non presence of 32kHz clock
899 * 0x20 Battery level lower than power on reset threshold
900 * 0x40 Power on key 1 pressed longer than 10 seconds
901 * 0x80 DB8500 thermal shutdown
902 */
903
904 ret = get_register_interruptible(ab8500, AB8500_RTC,
905 AB8500_SWITCH_OFF_STATUS, &value);
906 if (ret < 0)
907 return ret;
908 dev_info(ab8500->dev, "switch off status: %#x", value);
909
910 if (plat && plat->init)
911 plat->init(ab8500);
912
913 /* Clear and mask all interrupts */
914 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
915 /* Interrupt register 12 doesn't exist prior to version 2.0 */
916 if (ab8500_irq_regoffset[i] == 11 &&
917 ab8500->chip_id < AB8500_CUT2P0)
918 continue;
919
920 get_register_interruptible(ab8500, AB8500_INTERRUPT,
921 AB8500_IT_LATCH1_REG + ab8500_irq_regoffset[i],
922 &value);
923 set_register_interruptible(ab8500, AB8500_INTERRUPT,
924 AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i], 0xff);
925 }
926
927 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
928 if (ret)
929 return ret;
930
931 for (i = 0; i < AB8500_NUM_IRQ_REGS; i++)
932 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
933
934 if (ab8500->irq_base) {
935 ret = ab8500_irq_init(ab8500);
936 if (ret)
937 return ret;
938
939 ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
940 IRQF_ONESHOT | IRQF_NO_SUSPEND,
941 "ab8500", ab8500);
942 if (ret)
943 goto out_removeirq;
944 }
945
946 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
947 ARRAY_SIZE(ab8500_devs), NULL,
948 ab8500->irq_base);
949 if (ret)
950 goto out_freeirq;
951
952 ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group);
953 if (ret)
954 dev_err(ab8500->dev, "error creating sysfs entries\n");
955
956 return ret;
957
958 out_freeirq:
959 if (ab8500->irq_base)
960 free_irq(ab8500->irq, ab8500);
961 out_removeirq:
962 if (ab8500->irq_base)
963 ab8500_irq_remove(ab8500);
964
965 return ret;
966 }
967
968 int __devexit ab8500_exit(struct ab8500 *ab8500)
969 {
970 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
971 mfd_remove_devices(ab8500->dev);
972 if (ab8500->irq_base) {
973 free_irq(ab8500->irq, ab8500);
974 ab8500_irq_remove(ab8500);
975 }
976
977 return 0;
978 }
979
980 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
981 MODULE_DESCRIPTION("AB8500 MFD core");
982 MODULE_LICENSE("GPL v2");