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mfd: Don't use mutex_lock_interruptible in ab8500-core
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / mfd / ab8500-core.c
1 /*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License v2
5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
7 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/slab.h>
12 #include <linux/init.h>
13 #include <linux/irq.h>
14 #include <linux/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 AB9540_IT_SOURCE13_REG 0x0C
36 #define AB8500_IT_SOURCE19_REG 0x12
37 #define AB8500_IT_SOURCE20_REG 0x13
38 #define AB8500_IT_SOURCE21_REG 0x14
39 #define AB8500_IT_SOURCE22_REG 0x15
40 #define AB8500_IT_SOURCE23_REG 0x16
41 #define AB8500_IT_SOURCE24_REG 0x17
42
43 /*
44 * latch registers
45 */
46 #define AB8500_IT_LATCH1_REG 0x20
47 #define AB8500_IT_LATCH2_REG 0x21
48 #define AB8500_IT_LATCH3_REG 0x22
49 #define AB8500_IT_LATCH4_REG 0x23
50 #define AB8500_IT_LATCH5_REG 0x24
51 #define AB8500_IT_LATCH6_REG 0x25
52 #define AB8500_IT_LATCH7_REG 0x26
53 #define AB8500_IT_LATCH8_REG 0x27
54 #define AB8500_IT_LATCH9_REG 0x28
55 #define AB8500_IT_LATCH10_REG 0x29
56 #define AB8500_IT_LATCH12_REG 0x2B
57 #define AB9540_IT_LATCH13_REG 0x2C
58 #define AB8500_IT_LATCH19_REG 0x32
59 #define AB8500_IT_LATCH20_REG 0x33
60 #define AB8500_IT_LATCH21_REG 0x34
61 #define AB8500_IT_LATCH22_REG 0x35
62 #define AB8500_IT_LATCH23_REG 0x36
63 #define AB8500_IT_LATCH24_REG 0x37
64
65 /*
66 * mask registers
67 */
68
69 #define AB8500_IT_MASK1_REG 0x40
70 #define AB8500_IT_MASK2_REG 0x41
71 #define AB8500_IT_MASK3_REG 0x42
72 #define AB8500_IT_MASK4_REG 0x43
73 #define AB8500_IT_MASK5_REG 0x44
74 #define AB8500_IT_MASK6_REG 0x45
75 #define AB8500_IT_MASK7_REG 0x46
76 #define AB8500_IT_MASK8_REG 0x47
77 #define AB8500_IT_MASK9_REG 0x48
78 #define AB8500_IT_MASK10_REG 0x49
79 #define AB8500_IT_MASK11_REG 0x4A
80 #define AB8500_IT_MASK12_REG 0x4B
81 #define AB8500_IT_MASK13_REG 0x4C
82 #define AB8500_IT_MASK14_REG 0x4D
83 #define AB8500_IT_MASK15_REG 0x4E
84 #define AB8500_IT_MASK16_REG 0x4F
85 #define AB8500_IT_MASK17_REG 0x50
86 #define AB8500_IT_MASK18_REG 0x51
87 #define AB8500_IT_MASK19_REG 0x52
88 #define AB8500_IT_MASK20_REG 0x53
89 #define AB8500_IT_MASK21_REG 0x54
90 #define AB8500_IT_MASK22_REG 0x55
91 #define AB8500_IT_MASK23_REG 0x56
92 #define AB8500_IT_MASK24_REG 0x57
93
94 #define AB8500_REV_REG 0x80
95 #define AB8500_IC_NAME_REG 0x82
96 #define AB8500_SWITCH_OFF_STATUS 0x00
97
98 #define AB8500_TURN_ON_STATUS 0x00
99
100 #define AB9540_MODEM_CTRL2_REG 0x23
101 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
102
103 /*
104 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
105 * numbers are indexed into this array with (num / 8). The interupts are
106 * defined in linux/mfd/ab8500.h
107 *
108 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
109 * offset 0.
110 */
111 /* AB8500 support */
112 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
113 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
114 };
115
116 /* AB9540 support */
117 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
118 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
119 };
120
121 static const char ab8500_version_str[][7] = {
122 [AB8500_VERSION_AB8500] = "AB8500",
123 [AB8500_VERSION_AB8505] = "AB8505",
124 [AB8500_VERSION_AB9540] = "AB9540",
125 [AB8500_VERSION_AB8540] = "AB8540",
126 };
127
128 static int ab8500_get_chip_id(struct device *dev)
129 {
130 struct ab8500 *ab8500;
131
132 if (!dev)
133 return -EINVAL;
134 ab8500 = dev_get_drvdata(dev->parent);
135 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
136 }
137
138 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
139 u8 reg, u8 data)
140 {
141 int ret;
142 /*
143 * Put the u8 bank and u8 register together into a an u16.
144 * The bank on higher 8 bits and register in lower 8 bits.
145 * */
146 u16 addr = ((u16)bank) << 8 | reg;
147
148 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
149
150 mutex_lock(&ab8500->lock);
151
152 ret = ab8500->write(ab8500, addr, data);
153 if (ret < 0)
154 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
155 addr, ret);
156 mutex_unlock(&ab8500->lock);
157
158 return ret;
159 }
160
161 static int ab8500_set_register(struct device *dev, u8 bank,
162 u8 reg, u8 value)
163 {
164 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
165
166 return set_register_interruptible(ab8500, bank, reg, value);
167 }
168
169 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
170 u8 reg, u8 *value)
171 {
172 int ret;
173 /* put the u8 bank and u8 reg together into a an u16.
174 * bank on higher 8 bits and reg in lower */
175 u16 addr = ((u16)bank) << 8 | reg;
176
177 mutex_lock(&ab8500->lock);
178
179 ret = ab8500->read(ab8500, addr);
180 if (ret < 0)
181 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
182 addr, ret);
183 else
184 *value = ret;
185
186 mutex_unlock(&ab8500->lock);
187 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
188
189 return ret;
190 }
191
192 static int ab8500_get_register(struct device *dev, u8 bank,
193 u8 reg, u8 *value)
194 {
195 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
196
197 return get_register_interruptible(ab8500, bank, reg, value);
198 }
199
200 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
201 u8 reg, u8 bitmask, u8 bitvalues)
202 {
203 int ret;
204 u8 data;
205 /* put the u8 bank and u8 reg together into a an u16.
206 * bank on higher 8 bits and reg in lower */
207 u16 addr = ((u16)bank) << 8 | reg;
208
209 mutex_lock(&ab8500->lock);
210
211 ret = ab8500->read(ab8500, addr);
212 if (ret < 0) {
213 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
214 addr, ret);
215 goto out;
216 }
217
218 data = (u8)ret;
219 data = (~bitmask & data) | (bitmask & bitvalues);
220
221 ret = ab8500->write(ab8500, addr, data);
222 if (ret < 0)
223 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
224 addr, ret);
225
226 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data);
227 out:
228 mutex_unlock(&ab8500->lock);
229 return ret;
230 }
231
232 static int ab8500_mask_and_set_register(struct device *dev,
233 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
234 {
235 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
236
237 return mask_and_set_register_interruptible(ab8500, bank, reg,
238 bitmask, bitvalues);
239
240 }
241
242 static struct abx500_ops ab8500_ops = {
243 .get_chip_id = ab8500_get_chip_id,
244 .get_register = ab8500_get_register,
245 .set_register = ab8500_set_register,
246 .get_register_page = NULL,
247 .set_register_page = NULL,
248 .mask_and_set_register = ab8500_mask_and_set_register,
249 .event_registers_startup_state_get = NULL,
250 .startup_irq_enabled = NULL,
251 };
252
253 static void ab8500_irq_lock(struct irq_data *data)
254 {
255 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
256
257 mutex_lock(&ab8500->irq_lock);
258 }
259
260 static void ab8500_irq_sync_unlock(struct irq_data *data)
261 {
262 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
263 int i;
264
265 for (i = 0; i < ab8500->mask_size; i++) {
266 u8 old = ab8500->oldmask[i];
267 u8 new = ab8500->mask[i];
268 int reg;
269
270 if (new == old)
271 continue;
272
273 /*
274 * Interrupt register 12 doesn't exist prior to AB8500 version
275 * 2.0
276 */
277 if (ab8500->irq_reg_offset[i] == 11 &&
278 is_ab8500_1p1_or_earlier(ab8500))
279 continue;
280
281 ab8500->oldmask[i] = new;
282
283 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
284 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
285 }
286
287 mutex_unlock(&ab8500->irq_lock);
288 }
289
290 static void ab8500_irq_mask(struct irq_data *data)
291 {
292 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
293 int offset = data->irq - ab8500->irq_base;
294 int index = offset / 8;
295 int mask = 1 << (offset % 8);
296
297 ab8500->mask[index] |= mask;
298 }
299
300 static void ab8500_irq_unmask(struct irq_data *data)
301 {
302 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
303 int offset = data->irq - ab8500->irq_base;
304 int index = offset / 8;
305 int mask = 1 << (offset % 8);
306
307 ab8500->mask[index] &= ~mask;
308 }
309
310 static struct irq_chip ab8500_irq_chip = {
311 .name = "ab8500",
312 .irq_bus_lock = ab8500_irq_lock,
313 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
314 .irq_mask = ab8500_irq_mask,
315 .irq_disable = ab8500_irq_mask,
316 .irq_unmask = ab8500_irq_unmask,
317 };
318
319 static irqreturn_t ab8500_irq(int irq, void *dev)
320 {
321 struct ab8500 *ab8500 = dev;
322 int i;
323
324 dev_vdbg(ab8500->dev, "interrupt\n");
325
326 for (i = 0; i < ab8500->mask_size; i++) {
327 int regoffset = ab8500->irq_reg_offset[i];
328 int status;
329 u8 value;
330
331 /*
332 * Interrupt register 12 doesn't exist prior to AB8500 version
333 * 2.0
334 */
335 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
336 continue;
337
338 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
339 AB8500_IT_LATCH1_REG + regoffset, &value);
340 if (status < 0 || value == 0)
341 continue;
342
343 do {
344 int bit = __ffs(value);
345 int line = i * 8 + bit;
346
347 handle_nested_irq(ab8500->irq_base + line);
348 value &= ~(1 << bit);
349 } while (value);
350 }
351
352 return IRQ_HANDLED;
353 }
354
355 static int ab8500_irq_init(struct ab8500 *ab8500)
356 {
357 int base = ab8500->irq_base;
358 int irq;
359 int num_irqs;
360
361 if (is_ab9540(ab8500))
362 num_irqs = AB9540_NR_IRQS;
363 else
364 num_irqs = AB8500_NR_IRQS;
365
366 for (irq = base; irq < base + num_irqs; irq++) {
367 irq_set_chip_data(irq, ab8500);
368 irq_set_chip_and_handler(irq, &ab8500_irq_chip,
369 handle_simple_irq);
370 irq_set_nested_thread(irq, 1);
371 #ifdef CONFIG_ARM
372 set_irq_flags(irq, IRQF_VALID);
373 #else
374 irq_set_noprobe(irq);
375 #endif
376 }
377
378 return 0;
379 }
380
381 static void ab8500_irq_remove(struct ab8500 *ab8500)
382 {
383 int base = ab8500->irq_base;
384 int irq;
385 int num_irqs;
386
387 if (is_ab9540(ab8500))
388 num_irqs = AB9540_NR_IRQS;
389 else
390 num_irqs = AB8500_NR_IRQS;
391
392 for (irq = base; irq < base + num_irqs; irq++) {
393 #ifdef CONFIG_ARM
394 set_irq_flags(irq, 0);
395 #endif
396 irq_set_chip_and_handler(irq, NULL, NULL);
397 irq_set_chip_data(irq, NULL);
398 }
399 }
400
401 /* AB8500 GPIO Resources */
402 static struct resource __devinitdata ab8500_gpio_resources[] = {
403 {
404 .name = "GPIO_INT6",
405 .start = AB8500_INT_GPIO6R,
406 .end = AB8500_INT_GPIO41F,
407 .flags = IORESOURCE_IRQ,
408 }
409 };
410
411 /* AB9540 GPIO Resources */
412 static struct resource __devinitdata ab9540_gpio_resources[] = {
413 {
414 .name = "GPIO_INT6",
415 .start = AB8500_INT_GPIO6R,
416 .end = AB8500_INT_GPIO41F,
417 .flags = IORESOURCE_IRQ,
418 },
419 {
420 .name = "GPIO_INT14",
421 .start = AB9540_INT_GPIO50R,
422 .end = AB9540_INT_GPIO54R,
423 .flags = IORESOURCE_IRQ,
424 },
425 {
426 .name = "GPIO_INT15",
427 .start = AB9540_INT_GPIO50F,
428 .end = AB9540_INT_GPIO54F,
429 .flags = IORESOURCE_IRQ,
430 }
431 };
432
433 static struct resource __devinitdata ab8500_gpadc_resources[] = {
434 {
435 .name = "HW_CONV_END",
436 .start = AB8500_INT_GP_HW_ADC_CONV_END,
437 .end = AB8500_INT_GP_HW_ADC_CONV_END,
438 .flags = IORESOURCE_IRQ,
439 },
440 {
441 .name = "SW_CONV_END",
442 .start = AB8500_INT_GP_SW_ADC_CONV_END,
443 .end = AB8500_INT_GP_SW_ADC_CONV_END,
444 .flags = IORESOURCE_IRQ,
445 },
446 };
447
448 static struct resource __devinitdata ab8500_rtc_resources[] = {
449 {
450 .name = "60S",
451 .start = AB8500_INT_RTC_60S,
452 .end = AB8500_INT_RTC_60S,
453 .flags = IORESOURCE_IRQ,
454 },
455 {
456 .name = "ALARM",
457 .start = AB8500_INT_RTC_ALARM,
458 .end = AB8500_INT_RTC_ALARM,
459 .flags = IORESOURCE_IRQ,
460 },
461 };
462
463 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
464 {
465 .name = "ONKEY_DBF",
466 .start = AB8500_INT_PON_KEY1DB_F,
467 .end = AB8500_INT_PON_KEY1DB_F,
468 .flags = IORESOURCE_IRQ,
469 },
470 {
471 .name = "ONKEY_DBR",
472 .start = AB8500_INT_PON_KEY1DB_R,
473 .end = AB8500_INT_PON_KEY1DB_R,
474 .flags = IORESOURCE_IRQ,
475 },
476 };
477
478 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
479 {
480 .name = "ACC_DETECT_1DB_F",
481 .start = AB8500_INT_ACC_DETECT_1DB_F,
482 .end = AB8500_INT_ACC_DETECT_1DB_F,
483 .flags = IORESOURCE_IRQ,
484 },
485 {
486 .name = "ACC_DETECT_1DB_R",
487 .start = AB8500_INT_ACC_DETECT_1DB_R,
488 .end = AB8500_INT_ACC_DETECT_1DB_R,
489 .flags = IORESOURCE_IRQ,
490 },
491 {
492 .name = "ACC_DETECT_21DB_F",
493 .start = AB8500_INT_ACC_DETECT_21DB_F,
494 .end = AB8500_INT_ACC_DETECT_21DB_F,
495 .flags = IORESOURCE_IRQ,
496 },
497 {
498 .name = "ACC_DETECT_21DB_R",
499 .start = AB8500_INT_ACC_DETECT_21DB_R,
500 .end = AB8500_INT_ACC_DETECT_21DB_R,
501 .flags = IORESOURCE_IRQ,
502 },
503 {
504 .name = "ACC_DETECT_22DB_F",
505 .start = AB8500_INT_ACC_DETECT_22DB_F,
506 .end = AB8500_INT_ACC_DETECT_22DB_F,
507 .flags = IORESOURCE_IRQ,
508 },
509 {
510 .name = "ACC_DETECT_22DB_R",
511 .start = AB8500_INT_ACC_DETECT_22DB_R,
512 .end = AB8500_INT_ACC_DETECT_22DB_R,
513 .flags = IORESOURCE_IRQ,
514 },
515 };
516
517 static struct resource __devinitdata ab8500_charger_resources[] = {
518 {
519 .name = "MAIN_CH_UNPLUG_DET",
520 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
521 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
522 .flags = IORESOURCE_IRQ,
523 },
524 {
525 .name = "MAIN_CHARGE_PLUG_DET",
526 .start = AB8500_INT_MAIN_CH_PLUG_DET,
527 .end = AB8500_INT_MAIN_CH_PLUG_DET,
528 .flags = IORESOURCE_IRQ,
529 },
530 {
531 .name = "VBUS_DET_R",
532 .start = AB8500_INT_VBUS_DET_R,
533 .end = AB8500_INT_VBUS_DET_R,
534 .flags = IORESOURCE_IRQ,
535 },
536 {
537 .name = "VBUS_DET_F",
538 .start = AB8500_INT_VBUS_DET_F,
539 .end = AB8500_INT_VBUS_DET_F,
540 .flags = IORESOURCE_IRQ,
541 },
542 {
543 .name = "USB_LINK_STATUS",
544 .start = AB8500_INT_USB_LINK_STATUS,
545 .end = AB8500_INT_USB_LINK_STATUS,
546 .flags = IORESOURCE_IRQ,
547 },
548 {
549 .name = "USB_CHARGE_DET_DONE",
550 .start = AB8500_INT_USB_CHG_DET_DONE,
551 .end = AB8500_INT_USB_CHG_DET_DONE,
552 .flags = IORESOURCE_IRQ,
553 },
554 {
555 .name = "VBUS_OVV",
556 .start = AB8500_INT_VBUS_OVV,
557 .end = AB8500_INT_VBUS_OVV,
558 .flags = IORESOURCE_IRQ,
559 },
560 {
561 .name = "USB_CH_TH_PROT_R",
562 .start = AB8500_INT_USB_CH_TH_PROT_R,
563 .end = AB8500_INT_USB_CH_TH_PROT_R,
564 .flags = IORESOURCE_IRQ,
565 },
566 {
567 .name = "USB_CH_TH_PROT_F",
568 .start = AB8500_INT_USB_CH_TH_PROT_F,
569 .end = AB8500_INT_USB_CH_TH_PROT_F,
570 .flags = IORESOURCE_IRQ,
571 },
572 {
573 .name = "MAIN_EXT_CH_NOT_OK",
574 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
575 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
576 .flags = IORESOURCE_IRQ,
577 },
578 {
579 .name = "MAIN_CH_TH_PROT_R",
580 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
581 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
582 .flags = IORESOURCE_IRQ,
583 },
584 {
585 .name = "MAIN_CH_TH_PROT_F",
586 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
587 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
588 .flags = IORESOURCE_IRQ,
589 },
590 {
591 .name = "USB_CHARGER_NOT_OKR",
592 .start = AB8500_INT_USB_CHARGER_NOT_OK,
593 .end = AB8500_INT_USB_CHARGER_NOT_OK,
594 .flags = IORESOURCE_IRQ,
595 },
596 {
597 .name = "USB_CHARGER_NOT_OKF",
598 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
599 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
600 .flags = IORESOURCE_IRQ,
601 },
602 {
603 .name = "CH_WD_EXP",
604 .start = AB8500_INT_CH_WD_EXP,
605 .end = AB8500_INT_CH_WD_EXP,
606 .flags = IORESOURCE_IRQ,
607 },
608 };
609
610 static struct resource __devinitdata ab8500_btemp_resources[] = {
611 {
612 .name = "BAT_CTRL_INDB",
613 .start = AB8500_INT_BAT_CTRL_INDB,
614 .end = AB8500_INT_BAT_CTRL_INDB,
615 .flags = IORESOURCE_IRQ,
616 },
617 {
618 .name = "BTEMP_LOW",
619 .start = AB8500_INT_BTEMP_LOW,
620 .end = AB8500_INT_BTEMP_LOW,
621 .flags = IORESOURCE_IRQ,
622 },
623 {
624 .name = "BTEMP_HIGH",
625 .start = AB8500_INT_BTEMP_HIGH,
626 .end = AB8500_INT_BTEMP_HIGH,
627 .flags = IORESOURCE_IRQ,
628 },
629 {
630 .name = "BTEMP_LOW_MEDIUM",
631 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
632 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
633 .flags = IORESOURCE_IRQ,
634 },
635 {
636 .name = "BTEMP_MEDIUM_HIGH",
637 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
638 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
639 .flags = IORESOURCE_IRQ,
640 },
641 };
642
643 static struct resource __devinitdata ab8500_fg_resources[] = {
644 {
645 .name = "NCONV_ACCU",
646 .start = AB8500_INT_CCN_CONV_ACC,
647 .end = AB8500_INT_CCN_CONV_ACC,
648 .flags = IORESOURCE_IRQ,
649 },
650 {
651 .name = "BATT_OVV",
652 .start = AB8500_INT_BATT_OVV,
653 .end = AB8500_INT_BATT_OVV,
654 .flags = IORESOURCE_IRQ,
655 },
656 {
657 .name = "LOW_BAT_F",
658 .start = AB8500_INT_LOW_BAT_F,
659 .end = AB8500_INT_LOW_BAT_F,
660 .flags = IORESOURCE_IRQ,
661 },
662 {
663 .name = "LOW_BAT_R",
664 .start = AB8500_INT_LOW_BAT_R,
665 .end = AB8500_INT_LOW_BAT_R,
666 .flags = IORESOURCE_IRQ,
667 },
668 {
669 .name = "CC_INT_CALIB",
670 .start = AB8500_INT_CC_INT_CALIB,
671 .end = AB8500_INT_CC_INT_CALIB,
672 .flags = IORESOURCE_IRQ,
673 },
674 };
675
676 static struct resource __devinitdata ab8500_chargalg_resources[] = {};
677
678 #ifdef CONFIG_DEBUG_FS
679 static struct resource __devinitdata ab8500_debug_resources[] = {
680 {
681 .name = "IRQ_FIRST",
682 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
683 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
684 .flags = IORESOURCE_IRQ,
685 },
686 {
687 .name = "IRQ_LAST",
688 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
689 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
690 .flags = IORESOURCE_IRQ,
691 },
692 };
693 #endif
694
695 static struct resource __devinitdata ab8500_usb_resources[] = {
696 {
697 .name = "ID_WAKEUP_R",
698 .start = AB8500_INT_ID_WAKEUP_R,
699 .end = AB8500_INT_ID_WAKEUP_R,
700 .flags = IORESOURCE_IRQ,
701 },
702 {
703 .name = "ID_WAKEUP_F",
704 .start = AB8500_INT_ID_WAKEUP_F,
705 .end = AB8500_INT_ID_WAKEUP_F,
706 .flags = IORESOURCE_IRQ,
707 },
708 {
709 .name = "VBUS_DET_F",
710 .start = AB8500_INT_VBUS_DET_F,
711 .end = AB8500_INT_VBUS_DET_F,
712 .flags = IORESOURCE_IRQ,
713 },
714 {
715 .name = "VBUS_DET_R",
716 .start = AB8500_INT_VBUS_DET_R,
717 .end = AB8500_INT_VBUS_DET_R,
718 .flags = IORESOURCE_IRQ,
719 },
720 {
721 .name = "USB_LINK_STATUS",
722 .start = AB8500_INT_USB_LINK_STATUS,
723 .end = AB8500_INT_USB_LINK_STATUS,
724 .flags = IORESOURCE_IRQ,
725 },
726 {
727 .name = "USB_ADP_PROBE_PLUG",
728 .start = AB8500_INT_ADP_PROBE_PLUG,
729 .end = AB8500_INT_ADP_PROBE_PLUG,
730 .flags = IORESOURCE_IRQ,
731 },
732 {
733 .name = "USB_ADP_PROBE_UNPLUG",
734 .start = AB8500_INT_ADP_PROBE_UNPLUG,
735 .end = AB8500_INT_ADP_PROBE_UNPLUG,
736 .flags = IORESOURCE_IRQ,
737 },
738 };
739
740 static struct resource __devinitdata ab8500_temp_resources[] = {
741 {
742 .name = "AB8500_TEMP_WARM",
743 .start = AB8500_INT_TEMP_WARM,
744 .end = AB8500_INT_TEMP_WARM,
745 .flags = IORESOURCE_IRQ,
746 },
747 };
748
749 static struct mfd_cell __devinitdata abx500_common_devs[] = {
750 #ifdef CONFIG_DEBUG_FS
751 {
752 .name = "ab8500-debug",
753 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
754 .resources = ab8500_debug_resources,
755 },
756 #endif
757 {
758 .name = "ab8500-sysctrl",
759 },
760 {
761 .name = "ab8500-regulator",
762 },
763 {
764 .name = "ab8500-gpadc",
765 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
766 .resources = ab8500_gpadc_resources,
767 },
768 {
769 .name = "ab8500-rtc",
770 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
771 .resources = ab8500_rtc_resources,
772 },
773 {
774 .name = "ab8500-charger",
775 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
776 .resources = ab8500_charger_resources,
777 },
778 {
779 .name = "ab8500-btemp",
780 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
781 .resources = ab8500_btemp_resources,
782 },
783 {
784 .name = "ab8500-fg",
785 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
786 .resources = ab8500_fg_resources,
787 },
788 {
789 .name = "ab8500-chargalg",
790 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
791 .resources = ab8500_chargalg_resources,
792 },
793 {
794 .name = "ab8500-acc-det",
795 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
796 .resources = ab8500_av_acc_detect_resources,
797 },
798 {
799 .name = "ab8500-codec",
800 },
801
802 {
803 .name = "ab8500-poweron-key",
804 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
805 .resources = ab8500_poweronkey_db_resources,
806 },
807 {
808 .name = "ab8500-pwm",
809 .id = 1,
810 },
811 {
812 .name = "ab8500-pwm",
813 .id = 2,
814 },
815 {
816 .name = "ab8500-pwm",
817 .id = 3,
818 },
819 { .name = "ab8500-leds", },
820 {
821 .name = "ab8500-denc",
822 },
823 {
824 .name = "ab8500-temp",
825 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
826 .resources = ab8500_temp_resources,
827 },
828 };
829
830 static struct mfd_cell __devinitdata ab8500_devs[] = {
831 {
832 .name = "ab8500-gpio",
833 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
834 .resources = ab8500_gpio_resources,
835 },
836 {
837 .name = "ab8500-usb",
838 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
839 .resources = ab8500_usb_resources,
840 },
841 };
842
843 static struct mfd_cell __devinitdata ab9540_devs[] = {
844 {
845 .name = "ab8500-gpio",
846 .num_resources = ARRAY_SIZE(ab9540_gpio_resources),
847 .resources = ab9540_gpio_resources,
848 },
849 {
850 .name = "ab9540-usb",
851 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
852 .resources = ab8500_usb_resources,
853 },
854 };
855
856 static ssize_t show_chip_id(struct device *dev,
857 struct device_attribute *attr, char *buf)
858 {
859 struct ab8500 *ab8500;
860
861 ab8500 = dev_get_drvdata(dev);
862 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
863 }
864
865 /*
866 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
867 * 0x01 Swoff bit programming
868 * 0x02 Thermal protection activation
869 * 0x04 Vbat lower then BattOk falling threshold
870 * 0x08 Watchdog expired
871 * 0x10 Non presence of 32kHz clock
872 * 0x20 Battery level lower than power on reset threshold
873 * 0x40 Power on key 1 pressed longer than 10 seconds
874 * 0x80 DB8500 thermal shutdown
875 */
876 static ssize_t show_switch_off_status(struct device *dev,
877 struct device_attribute *attr, char *buf)
878 {
879 int ret;
880 u8 value;
881 struct ab8500 *ab8500;
882
883 ab8500 = dev_get_drvdata(dev);
884 ret = get_register_interruptible(ab8500, AB8500_RTC,
885 AB8500_SWITCH_OFF_STATUS, &value);
886 if (ret < 0)
887 return ret;
888 return sprintf(buf, "%#x\n", value);
889 }
890
891 /*
892 * ab8500 has turned on due to (TURN_ON_STATUS):
893 * 0x01 PORnVbat
894 * 0x02 PonKey1dbF
895 * 0x04 PonKey2dbF
896 * 0x08 RTCAlarm
897 * 0x10 MainChDet
898 * 0x20 VbusDet
899 * 0x40 UsbIDDetect
900 * 0x80 Reserved
901 */
902 static ssize_t show_turn_on_status(struct device *dev,
903 struct device_attribute *attr, char *buf)
904 {
905 int ret;
906 u8 value;
907 struct ab8500 *ab8500;
908
909 ab8500 = dev_get_drvdata(dev);
910 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
911 AB8500_TURN_ON_STATUS, &value);
912 if (ret < 0)
913 return ret;
914 return sprintf(buf, "%#x\n", value);
915 }
916
917 static ssize_t show_ab9540_dbbrstn(struct device *dev,
918 struct device_attribute *attr, char *buf)
919 {
920 struct ab8500 *ab8500;
921 int ret;
922 u8 value;
923
924 ab8500 = dev_get_drvdata(dev);
925
926 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
927 AB9540_MODEM_CTRL2_REG, &value);
928 if (ret < 0)
929 return ret;
930
931 return sprintf(buf, "%d\n",
932 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
933 }
934
935 static ssize_t store_ab9540_dbbrstn(struct device *dev,
936 struct device_attribute *attr, const char *buf, size_t count)
937 {
938 struct ab8500 *ab8500;
939 int ret = count;
940 int err;
941 u8 bitvalues;
942
943 ab8500 = dev_get_drvdata(dev);
944
945 if (count > 0) {
946 switch (buf[0]) {
947 case '0':
948 bitvalues = 0;
949 break;
950 case '1':
951 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
952 break;
953 default:
954 goto exit;
955 }
956
957 err = mask_and_set_register_interruptible(ab8500,
958 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
959 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
960 if (err)
961 dev_info(ab8500->dev,
962 "Failed to set DBBRSTN %c, err %#x\n",
963 buf[0], err);
964 }
965
966 exit:
967 return ret;
968 }
969
970 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
971 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
972 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
973 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
974 show_ab9540_dbbrstn, store_ab9540_dbbrstn);
975
976 static struct attribute *ab8500_sysfs_entries[] = {
977 &dev_attr_chip_id.attr,
978 &dev_attr_switch_off_status.attr,
979 &dev_attr_turn_on_status.attr,
980 NULL,
981 };
982
983 static struct attribute *ab9540_sysfs_entries[] = {
984 &dev_attr_chip_id.attr,
985 &dev_attr_switch_off_status.attr,
986 &dev_attr_turn_on_status.attr,
987 &dev_attr_dbbrstn.attr,
988 NULL,
989 };
990
991 static struct attribute_group ab8500_attr_group = {
992 .attrs = ab8500_sysfs_entries,
993 };
994
995 static struct attribute_group ab9540_attr_group = {
996 .attrs = ab9540_sysfs_entries,
997 };
998
999 int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
1000 {
1001 struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
1002 int ret;
1003 int i;
1004 u8 value;
1005
1006 if (plat)
1007 ab8500->irq_base = plat->irq_base;
1008
1009 mutex_init(&ab8500->lock);
1010 mutex_init(&ab8500->irq_lock);
1011
1012 if (version != AB8500_VERSION_UNDEFINED)
1013 ab8500->version = version;
1014 else {
1015 ret = get_register_interruptible(ab8500, AB8500_MISC,
1016 AB8500_IC_NAME_REG, &value);
1017 if (ret < 0)
1018 return ret;
1019
1020 ab8500->version = value;
1021 }
1022
1023 ret = get_register_interruptible(ab8500, AB8500_MISC,
1024 AB8500_REV_REG, &value);
1025 if (ret < 0)
1026 return ret;
1027
1028 ab8500->chip_id = value;
1029
1030 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1031 ab8500_version_str[ab8500->version],
1032 ab8500->chip_id >> 4,
1033 ab8500->chip_id & 0x0F);
1034
1035 /* Configure AB8500 or AB9540 IRQ */
1036 if (is_ab9540(ab8500)) {
1037 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1038 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1039 } else {
1040 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1041 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1042 }
1043 ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1044 if (!ab8500->mask)
1045 return -ENOMEM;
1046 ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1047 if (!ab8500->oldmask) {
1048 ret = -ENOMEM;
1049 goto out_freemask;
1050 }
1051 /*
1052 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1053 * 0x01 Swoff bit programming
1054 * 0x02 Thermal protection activation
1055 * 0x04 Vbat lower then BattOk falling threshold
1056 * 0x08 Watchdog expired
1057 * 0x10 Non presence of 32kHz clock
1058 * 0x20 Battery level lower than power on reset threshold
1059 * 0x40 Power on key 1 pressed longer than 10 seconds
1060 * 0x80 DB8500 thermal shutdown
1061 */
1062
1063 ret = get_register_interruptible(ab8500, AB8500_RTC,
1064 AB8500_SWITCH_OFF_STATUS, &value);
1065 if (ret < 0)
1066 return ret;
1067 dev_info(ab8500->dev, "switch off status: %#x", value);
1068
1069 if (plat && plat->init)
1070 plat->init(ab8500);
1071
1072 /* Clear and mask all interrupts */
1073 for (i = 0; i < ab8500->mask_size; i++) {
1074 /*
1075 * Interrupt register 12 doesn't exist prior to AB8500 version
1076 * 2.0
1077 */
1078 if (ab8500->irq_reg_offset[i] == 11 &&
1079 is_ab8500_1p1_or_earlier(ab8500))
1080 continue;
1081
1082 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1083 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1084 &value);
1085 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1086 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1087 }
1088
1089 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1090 if (ret)
1091 goto out_freeoldmask;
1092
1093 for (i = 0; i < ab8500->mask_size; i++)
1094 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1095
1096 if (ab8500->irq_base) {
1097 ret = ab8500_irq_init(ab8500);
1098 if (ret)
1099 goto out_freeoldmask;
1100
1101 ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
1102 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1103 "ab8500", ab8500);
1104 if (ret)
1105 goto out_removeirq;
1106 }
1107
1108 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
1109 ARRAY_SIZE(abx500_common_devs), NULL,
1110 ab8500->irq_base);
1111
1112 if (ret)
1113 goto out_freeirq;
1114
1115 if (is_ab9540(ab8500))
1116 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1117 ARRAY_SIZE(ab9540_devs), NULL,
1118 ab8500->irq_base);
1119 else
1120 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1121 ARRAY_SIZE(ab9540_devs), NULL,
1122 ab8500->irq_base);
1123 if (ret)
1124 goto out_freeirq;
1125
1126 if (is_ab9540(ab8500))
1127 ret = sysfs_create_group(&ab8500->dev->kobj,
1128 &ab9540_attr_group);
1129 else
1130 ret = sysfs_create_group(&ab8500->dev->kobj,
1131 &ab8500_attr_group);
1132 if (ret)
1133 dev_err(ab8500->dev, "error creating sysfs entries\n");
1134 else
1135 return ret;
1136
1137 out_freeirq:
1138 if (ab8500->irq_base)
1139 free_irq(ab8500->irq, ab8500);
1140 out_removeirq:
1141 if (ab8500->irq_base)
1142 ab8500_irq_remove(ab8500);
1143 out_freeoldmask:
1144 kfree(ab8500->oldmask);
1145 out_freemask:
1146 kfree(ab8500->mask);
1147
1148 return ret;
1149 }
1150
1151 int __devexit ab8500_exit(struct ab8500 *ab8500)
1152 {
1153 if (is_ab9540(ab8500))
1154 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1155 else
1156 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1157 mfd_remove_devices(ab8500->dev);
1158 if (ab8500->irq_base) {
1159 free_irq(ab8500->irq, ab8500);
1160 ab8500_irq_remove(ab8500);
1161 }
1162 kfree(ab8500->oldmask);
1163 kfree(ab8500->mask);
1164
1165 return 0;
1166 }
1167
1168 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1169 MODULE_DESCRIPTION("AB8500 MFD core");
1170 MODULE_LICENSE("GPL v2");
kernel source for telekom puls (alcatel/mediatek)