2 * Copyright (C) ST-Ericsson SA 2010
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>
10 #include <linux/kernel.h>
11 #include <linux/slab.h>
12 #include <linux/init.h>
13 #include <linux/irq.h>
14 #include <linux/irqdomain.h>
15 #include <linux/delay.h>
16 #include <linux/interrupt.h>
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/mfd/core.h>
20 #include <linux/mfd/abx500.h>
21 #include <linux/mfd/abx500/ab8500.h>
22 #include <linux/mfd/abx500/ab8500-bm.h>
23 #include <linux/mfd/dbx500-prcmu.h>
24 #include <linux/regulator/ab8500.h>
26 #include <linux/of_device.h>
29 * Interrupt register offsets
32 #define AB8500_IT_SOURCE1_REG 0x00
33 #define AB8500_IT_SOURCE2_REG 0x01
34 #define AB8500_IT_SOURCE3_REG 0x02
35 #define AB8500_IT_SOURCE4_REG 0x03
36 #define AB8500_IT_SOURCE5_REG 0x04
37 #define AB8500_IT_SOURCE6_REG 0x05
38 #define AB8500_IT_SOURCE7_REG 0x06
39 #define AB8500_IT_SOURCE8_REG 0x07
40 #define AB9540_IT_SOURCE13_REG 0x0C
41 #define AB8500_IT_SOURCE19_REG 0x12
42 #define AB8500_IT_SOURCE20_REG 0x13
43 #define AB8500_IT_SOURCE21_REG 0x14
44 #define AB8500_IT_SOURCE22_REG 0x15
45 #define AB8500_IT_SOURCE23_REG 0x16
46 #define AB8500_IT_SOURCE24_REG 0x17
51 #define AB8500_IT_LATCH1_REG 0x20
52 #define AB8500_IT_LATCH2_REG 0x21
53 #define AB8500_IT_LATCH3_REG 0x22
54 #define AB8500_IT_LATCH4_REG 0x23
55 #define AB8500_IT_LATCH5_REG 0x24
56 #define AB8500_IT_LATCH6_REG 0x25
57 #define AB8500_IT_LATCH7_REG 0x26
58 #define AB8500_IT_LATCH8_REG 0x27
59 #define AB8500_IT_LATCH9_REG 0x28
60 #define AB8500_IT_LATCH10_REG 0x29
61 #define AB8500_IT_LATCH12_REG 0x2B
62 #define AB9540_IT_LATCH13_REG 0x2C
63 #define AB8500_IT_LATCH19_REG 0x32
64 #define AB8500_IT_LATCH20_REG 0x33
65 #define AB8500_IT_LATCH21_REG 0x34
66 #define AB8500_IT_LATCH22_REG 0x35
67 #define AB8500_IT_LATCH23_REG 0x36
68 #define AB8500_IT_LATCH24_REG 0x37
74 #define AB8500_IT_MASK1_REG 0x40
75 #define AB8500_IT_MASK2_REG 0x41
76 #define AB8500_IT_MASK3_REG 0x42
77 #define AB8500_IT_MASK4_REG 0x43
78 #define AB8500_IT_MASK5_REG 0x44
79 #define AB8500_IT_MASK6_REG 0x45
80 #define AB8500_IT_MASK7_REG 0x46
81 #define AB8500_IT_MASK8_REG 0x47
82 #define AB8500_IT_MASK9_REG 0x48
83 #define AB8500_IT_MASK10_REG 0x49
84 #define AB8500_IT_MASK11_REG 0x4A
85 #define AB8500_IT_MASK12_REG 0x4B
86 #define AB8500_IT_MASK13_REG 0x4C
87 #define AB8500_IT_MASK14_REG 0x4D
88 #define AB8500_IT_MASK15_REG 0x4E
89 #define AB8500_IT_MASK16_REG 0x4F
90 #define AB8500_IT_MASK17_REG 0x50
91 #define AB8500_IT_MASK18_REG 0x51
92 #define AB8500_IT_MASK19_REG 0x52
93 #define AB8500_IT_MASK20_REG 0x53
94 #define AB8500_IT_MASK21_REG 0x54
95 #define AB8500_IT_MASK22_REG 0x55
96 #define AB8500_IT_MASK23_REG 0x56
97 #define AB8500_IT_MASK24_REG 0x57
100 * latch hierarchy registers
102 #define AB8500_IT_LATCHHIER1_REG 0x60
103 #define AB8500_IT_LATCHHIER2_REG 0x61
104 #define AB8500_IT_LATCHHIER3_REG 0x62
106 #define AB8500_IT_LATCHHIER_NUM 3
108 #define AB8500_REV_REG 0x80
109 #define AB8500_IC_NAME_REG 0x82
110 #define AB8500_SWITCH_OFF_STATUS 0x00
112 #define AB8500_TURN_ON_STATUS 0x00
114 static bool no_bm; /* No battery management */
115 module_param(no_bm, bool, S_IRUGO);
117 #define AB9540_MODEM_CTRL2_REG 0x23
118 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
121 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
122 * numbers are indexed into this array with (num / 8). The interupts are
123 * defined in linux/mfd/ab8500.h
125 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
129 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
130 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
134 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
135 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
138 static const char ab8500_version_str[][7] = {
139 [AB8500_VERSION_AB8500] = "AB8500",
140 [AB8500_VERSION_AB8505] = "AB8505",
141 [AB8500_VERSION_AB9540] = "AB9540",
142 [AB8500_VERSION_AB8540] = "AB8540",
145 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
149 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
151 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
155 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
160 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
163 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
167 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
172 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
174 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
180 static int ab8500_get_chip_id(struct device *dev)
182 struct ab8500 *ab8500;
186 ab8500 = dev_get_drvdata(dev->parent);
187 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
190 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
195 * Put the u8 bank and u8 register together into a an u16.
196 * The bank on higher 8 bits and register in lower 8 bits.
198 u16 addr = ((u16)bank) << 8 | reg;
200 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
202 mutex_lock(&ab8500->lock);
204 ret = ab8500->write(ab8500, addr, data);
206 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
208 mutex_unlock(&ab8500->lock);
213 static int ab8500_set_register(struct device *dev, u8 bank,
217 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
219 atomic_inc(&ab8500->transfer_ongoing);
220 ret = set_register_interruptible(ab8500, bank, reg, value);
221 atomic_dec(&ab8500->transfer_ongoing);
225 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
229 /* put the u8 bank and u8 reg together into a an u16.
230 * bank on higher 8 bits and reg in lower */
231 u16 addr = ((u16)bank) << 8 | reg;
233 mutex_lock(&ab8500->lock);
235 ret = ab8500->read(ab8500, addr);
237 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
242 mutex_unlock(&ab8500->lock);
243 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
248 static int ab8500_get_register(struct device *dev, u8 bank,
252 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
254 atomic_inc(&ab8500->transfer_ongoing);
255 ret = get_register_interruptible(ab8500, bank, reg, value);
256 atomic_dec(&ab8500->transfer_ongoing);
260 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
261 u8 reg, u8 bitmask, u8 bitvalues)
264 /* put the u8 bank and u8 reg together into a an u16.
265 * bank on higher 8 bits and reg in lower */
266 u16 addr = ((u16)bank) << 8 | reg;
268 mutex_lock(&ab8500->lock);
270 if (ab8500->write_masked == NULL) {
273 ret = ab8500->read(ab8500, addr);
275 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
281 data = (~bitmask & data) | (bitmask & bitvalues);
283 ret = ab8500->write(ab8500, addr, data);
285 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
288 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
292 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
294 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
297 mutex_unlock(&ab8500->lock);
301 static int ab8500_mask_and_set_register(struct device *dev,
302 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
305 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
307 atomic_inc(&ab8500->transfer_ongoing);
308 ret= mask_and_set_register_interruptible(ab8500, bank, reg,
310 atomic_dec(&ab8500->transfer_ongoing);
314 static struct abx500_ops ab8500_ops = {
315 .get_chip_id = ab8500_get_chip_id,
316 .get_register = ab8500_get_register,
317 .set_register = ab8500_set_register,
318 .get_register_page = NULL,
319 .set_register_page = NULL,
320 .mask_and_set_register = ab8500_mask_and_set_register,
321 .event_registers_startup_state_get = NULL,
322 .startup_irq_enabled = NULL,
325 static void ab8500_irq_lock(struct irq_data *data)
327 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
329 mutex_lock(&ab8500->irq_lock);
330 atomic_inc(&ab8500->transfer_ongoing);
333 static void ab8500_irq_sync_unlock(struct irq_data *data)
335 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
338 for (i = 0; i < ab8500->mask_size; i++) {
339 u8 old = ab8500->oldmask[i];
340 u8 new = ab8500->mask[i];
347 * Interrupt register 12 doesn't exist prior to AB8500 version
350 if (ab8500->irq_reg_offset[i] == 11 &&
351 is_ab8500_1p1_or_earlier(ab8500))
354 ab8500->oldmask[i] = new;
356 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
357 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
359 atomic_dec(&ab8500->transfer_ongoing);
360 mutex_unlock(&ab8500->irq_lock);
363 static void ab8500_irq_mask(struct irq_data *data)
365 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
366 int offset = data->hwirq;
367 int index = offset / 8;
368 int mask = 1 << (offset % 8);
370 ab8500->mask[index] |= mask;
373 static void ab8500_irq_unmask(struct irq_data *data)
375 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
376 int offset = data->hwirq;
377 int index = offset / 8;
378 int mask = 1 << (offset % 8);
380 ab8500->mask[index] &= ~mask;
383 static struct irq_chip ab8500_irq_chip = {
385 .irq_bus_lock = ab8500_irq_lock,
386 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
387 .irq_mask = ab8500_irq_mask,
388 .irq_disable = ab8500_irq_mask,
389 .irq_unmask = ab8500_irq_unmask,
392 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
393 int latch_offset, u8 latch_val)
395 int int_bit = __ffs(latch_val);
399 int_bit = __ffs(latch_val);
401 for (i = 0; i < ab8500->mask_size; i++)
402 if (ab8500->irq_reg_offset[i] == latch_offset)
405 if (i >= ab8500->mask_size) {
406 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
411 line = (i << 3) + int_bit;
412 latch_val &= ~(1 << int_bit);
414 handle_nested_irq(ab8500->irq_base + line);
420 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
421 int hier_offset, u8 hier_val)
423 int latch_bit, status;
424 u8 latch_offset, latch_val;
427 latch_bit = __ffs(hier_val);
428 latch_offset = (hier_offset << 3) + latch_bit;
430 /* Fix inconsistent ITFromLatch25 bit mapping... */
431 if (unlikely(latch_offset == 17))
434 status = get_register_interruptible(ab8500,
436 AB8500_IT_LATCH1_REG + latch_offset,
438 if (status < 0 || latch_val == 0)
441 status = ab8500_handle_hierarchical_line(ab8500,
442 latch_offset, latch_val);
446 hier_val &= ~(1 << latch_bit);
452 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
454 struct ab8500 *ab8500 = dev;
457 dev_vdbg(ab8500->dev, "interrupt\n");
459 /* Hierarchical interrupt version */
460 for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) {
464 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
465 AB8500_IT_LATCHHIER1_REG + i, &hier_val);
466 if (status < 0 || hier_val == 0)
469 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
477 * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ
479 * @ab8500: ab8500_irq controller to operate on.
480 * @irq: index of the interrupt requested in the chip IRQs
482 * Useful for drivers to request their own IRQs.
484 static int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq)
489 return irq_create_mapping(ab8500->domain, irq);
492 static irqreturn_t ab8500_irq(int irq, void *dev)
494 struct ab8500 *ab8500 = dev;
497 dev_vdbg(ab8500->dev, "interrupt\n");
499 atomic_inc(&ab8500->transfer_ongoing);
501 for (i = 0; i < ab8500->mask_size; i++) {
502 int regoffset = ab8500->irq_reg_offset[i];
507 * Interrupt register 12 doesn't exist prior to AB8500 version
510 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
513 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
514 AB8500_IT_LATCH1_REG + regoffset, &value);
515 if (status < 0 || value == 0)
519 int bit = __ffs(value);
520 int line = i * 8 + bit;
521 int virq = ab8500_irq_get_virq(ab8500, line);
523 handle_nested_irq(virq);
524 value &= ~(1 << bit);
528 atomic_dec(&ab8500->transfer_ongoing);
532 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
533 irq_hw_number_t hwirq)
535 struct ab8500 *ab8500 = d->host_data;
540 irq_set_chip_data(virq, ab8500);
541 irq_set_chip_and_handler(virq, &ab8500_irq_chip,
543 irq_set_nested_thread(virq, 1);
545 set_irq_flags(virq, IRQF_VALID);
547 irq_set_noprobe(virq);
553 static struct irq_domain_ops ab8500_irq_ops = {
554 .map = ab8500_irq_map,
555 .xlate = irq_domain_xlate_twocell,
558 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
562 if (is_ab9540(ab8500))
563 num_irqs = AB9540_NR_IRQS;
564 else if (is_ab8505(ab8500))
565 num_irqs = AB8505_NR_IRQS;
567 num_irqs = AB8500_NR_IRQS;
569 /* If ->irq_base is zero this will give a linear mapping */
570 ab8500->domain = irq_domain_add_simple(NULL,
571 num_irqs, ab8500->irq_base,
572 &ab8500_irq_ops, ab8500);
574 if (!ab8500->domain) {
575 dev_err(ab8500->dev, "Failed to create irqdomain\n");
582 int ab8500_suspend(struct ab8500 *ab8500)
584 if (atomic_read(&ab8500->transfer_ongoing))
590 static struct resource ab8500_gpadc_resources[] = {
592 .name = "HW_CONV_END",
593 .start = AB8500_INT_GP_HW_ADC_CONV_END,
594 .end = AB8500_INT_GP_HW_ADC_CONV_END,
595 .flags = IORESOURCE_IRQ,
598 .name = "SW_CONV_END",
599 .start = AB8500_INT_GP_SW_ADC_CONV_END,
600 .end = AB8500_INT_GP_SW_ADC_CONV_END,
601 .flags = IORESOURCE_IRQ,
605 static struct resource ab8500_rtc_resources[] = {
608 .start = AB8500_INT_RTC_60S,
609 .end = AB8500_INT_RTC_60S,
610 .flags = IORESOURCE_IRQ,
614 .start = AB8500_INT_RTC_ALARM,
615 .end = AB8500_INT_RTC_ALARM,
616 .flags = IORESOURCE_IRQ,
620 static struct resource ab8500_poweronkey_db_resources[] = {
623 .start = AB8500_INT_PON_KEY1DB_F,
624 .end = AB8500_INT_PON_KEY1DB_F,
625 .flags = IORESOURCE_IRQ,
629 .start = AB8500_INT_PON_KEY1DB_R,
630 .end = AB8500_INT_PON_KEY1DB_R,
631 .flags = IORESOURCE_IRQ,
635 static struct resource ab8500_av_acc_detect_resources[] = {
637 .name = "ACC_DETECT_1DB_F",
638 .start = AB8500_INT_ACC_DETECT_1DB_F,
639 .end = AB8500_INT_ACC_DETECT_1DB_F,
640 .flags = IORESOURCE_IRQ,
643 .name = "ACC_DETECT_1DB_R",
644 .start = AB8500_INT_ACC_DETECT_1DB_R,
645 .end = AB8500_INT_ACC_DETECT_1DB_R,
646 .flags = IORESOURCE_IRQ,
649 .name = "ACC_DETECT_21DB_F",
650 .start = AB8500_INT_ACC_DETECT_21DB_F,
651 .end = AB8500_INT_ACC_DETECT_21DB_F,
652 .flags = IORESOURCE_IRQ,
655 .name = "ACC_DETECT_21DB_R",
656 .start = AB8500_INT_ACC_DETECT_21DB_R,
657 .end = AB8500_INT_ACC_DETECT_21DB_R,
658 .flags = IORESOURCE_IRQ,
661 .name = "ACC_DETECT_22DB_F",
662 .start = AB8500_INT_ACC_DETECT_22DB_F,
663 .end = AB8500_INT_ACC_DETECT_22DB_F,
664 .flags = IORESOURCE_IRQ,
667 .name = "ACC_DETECT_22DB_R",
668 .start = AB8500_INT_ACC_DETECT_22DB_R,
669 .end = AB8500_INT_ACC_DETECT_22DB_R,
670 .flags = IORESOURCE_IRQ,
674 static struct resource ab8500_charger_resources[] = {
676 .name = "MAIN_CH_UNPLUG_DET",
677 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
678 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
679 .flags = IORESOURCE_IRQ,
682 .name = "MAIN_CHARGE_PLUG_DET",
683 .start = AB8500_INT_MAIN_CH_PLUG_DET,
684 .end = AB8500_INT_MAIN_CH_PLUG_DET,
685 .flags = IORESOURCE_IRQ,
688 .name = "VBUS_DET_R",
689 .start = AB8500_INT_VBUS_DET_R,
690 .end = AB8500_INT_VBUS_DET_R,
691 .flags = IORESOURCE_IRQ,
694 .name = "VBUS_DET_F",
695 .start = AB8500_INT_VBUS_DET_F,
696 .end = AB8500_INT_VBUS_DET_F,
697 .flags = IORESOURCE_IRQ,
700 .name = "USB_LINK_STATUS",
701 .start = AB8500_INT_USB_LINK_STATUS,
702 .end = AB8500_INT_USB_LINK_STATUS,
703 .flags = IORESOURCE_IRQ,
707 .start = AB8500_INT_VBUS_OVV,
708 .end = AB8500_INT_VBUS_OVV,
709 .flags = IORESOURCE_IRQ,
712 .name = "USB_CH_TH_PROT_R",
713 .start = AB8500_INT_USB_CH_TH_PROT_R,
714 .end = AB8500_INT_USB_CH_TH_PROT_R,
715 .flags = IORESOURCE_IRQ,
718 .name = "USB_CH_TH_PROT_F",
719 .start = AB8500_INT_USB_CH_TH_PROT_F,
720 .end = AB8500_INT_USB_CH_TH_PROT_F,
721 .flags = IORESOURCE_IRQ,
724 .name = "MAIN_EXT_CH_NOT_OK",
725 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
726 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
727 .flags = IORESOURCE_IRQ,
730 .name = "MAIN_CH_TH_PROT_R",
731 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
732 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
733 .flags = IORESOURCE_IRQ,
736 .name = "MAIN_CH_TH_PROT_F",
737 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
738 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
739 .flags = IORESOURCE_IRQ,
742 .name = "USB_CHARGER_NOT_OKR",
743 .start = AB8500_INT_USB_CHARGER_NOT_OKR,
744 .end = AB8500_INT_USB_CHARGER_NOT_OKR,
745 .flags = IORESOURCE_IRQ,
749 .start = AB8500_INT_CH_WD_EXP,
750 .end = AB8500_INT_CH_WD_EXP,
751 .flags = IORESOURCE_IRQ,
754 .name = "VBUS_CH_DROP_END",
755 .start = AB8500_INT_VBUS_CH_DROP_END,
756 .end = AB8500_INT_VBUS_CH_DROP_END,
757 .flags = IORESOURCE_IRQ,
761 static struct resource ab8500_btemp_resources[] = {
763 .name = "BAT_CTRL_INDB",
764 .start = AB8500_INT_BAT_CTRL_INDB,
765 .end = AB8500_INT_BAT_CTRL_INDB,
766 .flags = IORESOURCE_IRQ,
770 .start = AB8500_INT_BTEMP_LOW,
771 .end = AB8500_INT_BTEMP_LOW,
772 .flags = IORESOURCE_IRQ,
775 .name = "BTEMP_HIGH",
776 .start = AB8500_INT_BTEMP_HIGH,
777 .end = AB8500_INT_BTEMP_HIGH,
778 .flags = IORESOURCE_IRQ,
781 .name = "BTEMP_LOW_MEDIUM",
782 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
783 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
784 .flags = IORESOURCE_IRQ,
787 .name = "BTEMP_MEDIUM_HIGH",
788 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
789 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
790 .flags = IORESOURCE_IRQ,
794 static struct resource ab8500_fg_resources[] = {
796 .name = "NCONV_ACCU",
797 .start = AB8500_INT_CCN_CONV_ACC,
798 .end = AB8500_INT_CCN_CONV_ACC,
799 .flags = IORESOURCE_IRQ,
803 .start = AB8500_INT_BATT_OVV,
804 .end = AB8500_INT_BATT_OVV,
805 .flags = IORESOURCE_IRQ,
809 .start = AB8500_INT_LOW_BAT_F,
810 .end = AB8500_INT_LOW_BAT_F,
811 .flags = IORESOURCE_IRQ,
815 .start = AB8500_INT_LOW_BAT_R,
816 .end = AB8500_INT_LOW_BAT_R,
817 .flags = IORESOURCE_IRQ,
820 .name = "CC_INT_CALIB",
821 .start = AB8500_INT_CC_INT_CALIB,
822 .end = AB8500_INT_CC_INT_CALIB,
823 .flags = IORESOURCE_IRQ,
827 .start = AB8500_INT_CCEOC,
828 .end = AB8500_INT_CCEOC,
829 .flags = IORESOURCE_IRQ,
833 static struct resource ab8500_chargalg_resources[] = {};
835 #ifdef CONFIG_DEBUG_FS
836 static struct resource ab8500_debug_resources[] = {
839 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
840 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
841 .flags = IORESOURCE_IRQ,
845 .start = AB8500_INT_XTAL32K_KO,
846 .end = AB8500_INT_XTAL32K_KO,
847 .flags = IORESOURCE_IRQ,
852 static struct resource ab8500_usb_resources[] = {
854 .name = "ID_WAKEUP_R",
855 .start = AB8500_INT_ID_WAKEUP_R,
856 .end = AB8500_INT_ID_WAKEUP_R,
857 .flags = IORESOURCE_IRQ,
860 .name = "ID_WAKEUP_F",
861 .start = AB8500_INT_ID_WAKEUP_F,
862 .end = AB8500_INT_ID_WAKEUP_F,
863 .flags = IORESOURCE_IRQ,
866 .name = "VBUS_DET_F",
867 .start = AB8500_INT_VBUS_DET_F,
868 .end = AB8500_INT_VBUS_DET_F,
869 .flags = IORESOURCE_IRQ,
872 .name = "VBUS_DET_R",
873 .start = AB8500_INT_VBUS_DET_R,
874 .end = AB8500_INT_VBUS_DET_R,
875 .flags = IORESOURCE_IRQ,
878 .name = "USB_LINK_STATUS",
879 .start = AB8500_INT_USB_LINK_STATUS,
880 .end = AB8500_INT_USB_LINK_STATUS,
881 .flags = IORESOURCE_IRQ,
884 .name = "USB_ADP_PROBE_PLUG",
885 .start = AB8500_INT_ADP_PROBE_PLUG,
886 .end = AB8500_INT_ADP_PROBE_PLUG,
887 .flags = IORESOURCE_IRQ,
890 .name = "USB_ADP_PROBE_UNPLUG",
891 .start = AB8500_INT_ADP_PROBE_UNPLUG,
892 .end = AB8500_INT_ADP_PROBE_UNPLUG,
893 .flags = IORESOURCE_IRQ,
897 static struct resource ab8505_iddet_resources[] = {
899 .name = "KeyDeglitch",
900 .start = AB8505_INT_KEYDEGLITCH,
901 .end = AB8505_INT_KEYDEGLITCH,
902 .flags = IORESOURCE_IRQ,
906 .start = AB8505_INT_KP,
907 .end = AB8505_INT_KP,
908 .flags = IORESOURCE_IRQ,
912 .start = AB8505_INT_IKP,
913 .end = AB8505_INT_IKP,
914 .flags = IORESOURCE_IRQ,
918 .start = AB8505_INT_IKR,
919 .end = AB8505_INT_IKR,
920 .flags = IORESOURCE_IRQ,
924 .start = AB8505_INT_KEYSTUCK,
925 .end = AB8505_INT_KEYSTUCK,
926 .flags = IORESOURCE_IRQ,
930 static struct resource ab8500_temp_resources[] = {
932 .name = "AB8500_TEMP_WARM",
933 .start = AB8500_INT_TEMP_WARM,
934 .end = AB8500_INT_TEMP_WARM,
935 .flags = IORESOURCE_IRQ,
939 static struct mfd_cell abx500_common_devs[] = {
940 #ifdef CONFIG_DEBUG_FS
942 .name = "ab8500-debug",
943 .of_compatible = "stericsson,ab8500-debug",
944 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
945 .resources = ab8500_debug_resources,
949 .name = "ab8500-sysctrl",
950 .of_compatible = "stericsson,ab8500-sysctrl",
953 .name = "ab8500-regulator",
954 .of_compatible = "stericsson,ab8500-regulator",
957 .name = "abx500-clk",
958 .of_compatible = "stericsson,abx500-clk",
961 .name = "ab8500-gpadc",
962 .of_compatible = "stericsson,ab8500-gpadc",
963 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
964 .resources = ab8500_gpadc_resources,
967 .name = "ab8500-rtc",
968 .of_compatible = "stericsson,ab8500-rtc",
969 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
970 .resources = ab8500_rtc_resources,
973 .name = "ab8500-acc-det",
974 .of_compatible = "stericsson,ab8500-acc-det",
975 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
976 .resources = ab8500_av_acc_detect_resources,
979 .name = "ab8500-poweron-key",
980 .of_compatible = "stericsson,ab8500-poweron-key",
981 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
982 .resources = ab8500_poweronkey_db_resources,
985 .name = "ab8500-pwm",
986 .of_compatible = "stericsson,ab8500-pwm",
990 .name = "ab8500-pwm",
991 .of_compatible = "stericsson,ab8500-pwm",
995 .name = "ab8500-pwm",
996 .of_compatible = "stericsson,ab8500-pwm",
1000 .name = "ab8500-leds",
1001 .of_compatible = "stericsson,ab8500-leds",
1004 .name = "ab8500-denc",
1005 .of_compatible = "stericsson,ab8500-denc",
1008 .name = "ab8500-temp",
1009 .of_compatible = "stericsson,ab8500-temp",
1010 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1011 .resources = ab8500_temp_resources,
1015 static struct mfd_cell ab8500_bm_devs[] = {
1017 .name = "ab8500-charger",
1018 .of_compatible = "stericsson,ab8500-charger",
1019 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
1020 .resources = ab8500_charger_resources,
1021 .platform_data = &ab8500_bm_data,
1022 .pdata_size = sizeof(ab8500_bm_data),
1025 .name = "ab8500-btemp",
1026 .of_compatible = "stericsson,ab8500-btemp",
1027 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
1028 .resources = ab8500_btemp_resources,
1029 .platform_data = &ab8500_bm_data,
1030 .pdata_size = sizeof(ab8500_bm_data),
1033 .name = "ab8500-fg",
1034 .of_compatible = "stericsson,ab8500-fg",
1035 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
1036 .resources = ab8500_fg_resources,
1037 .platform_data = &ab8500_bm_data,
1038 .pdata_size = sizeof(ab8500_bm_data),
1041 .name = "ab8500-chargalg",
1042 .of_compatible = "stericsson,ab8500-chargalg",
1043 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
1044 .resources = ab8500_chargalg_resources,
1045 .platform_data = &ab8500_bm_data,
1046 .pdata_size = sizeof(ab8500_bm_data),
1050 static struct mfd_cell ab8500_devs[] = {
1052 .name = "ab8500-gpio",
1053 .of_compatible = "stericsson,ab8500-gpio",
1056 .name = "ab8500-usb",
1057 .of_compatible = "stericsson,ab8500-usb",
1058 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1059 .resources = ab8500_usb_resources,
1062 .name = "ab8500-codec",
1063 .of_compatible = "stericsson,ab8500-codec",
1067 static struct mfd_cell ab9540_devs[] = {
1069 .name = "ab8500-gpio",
1072 .name = "ab9540-usb",
1073 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1074 .resources = ab8500_usb_resources,
1077 .name = "ab9540-codec",
1081 /* Device list common to ab9540 and ab8505 */
1082 static struct mfd_cell ab9540_ab8505_devs[] = {
1085 .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1086 .resources = ab8505_iddet_resources,
1090 static ssize_t show_chip_id(struct device *dev,
1091 struct device_attribute *attr, char *buf)
1093 struct ab8500 *ab8500;
1095 ab8500 = dev_get_drvdata(dev);
1096 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
1100 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1101 * 0x01 Swoff bit programming
1102 * 0x02 Thermal protection activation
1103 * 0x04 Vbat lower then BattOk falling threshold
1104 * 0x08 Watchdog expired
1105 * 0x10 Non presence of 32kHz clock
1106 * 0x20 Battery level lower than power on reset threshold
1107 * 0x40 Power on key 1 pressed longer than 10 seconds
1108 * 0x80 DB8500 thermal shutdown
1110 static ssize_t show_switch_off_status(struct device *dev,
1111 struct device_attribute *attr, char *buf)
1115 struct ab8500 *ab8500;
1117 ab8500 = dev_get_drvdata(dev);
1118 ret = get_register_interruptible(ab8500, AB8500_RTC,
1119 AB8500_SWITCH_OFF_STATUS, &value);
1122 return sprintf(buf, "%#x\n", value);
1126 * ab8500 has turned on due to (TURN_ON_STATUS):
1136 static ssize_t show_turn_on_status(struct device *dev,
1137 struct device_attribute *attr, char *buf)
1141 struct ab8500 *ab8500;
1143 ab8500 = dev_get_drvdata(dev);
1144 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1145 AB8500_TURN_ON_STATUS, &value);
1148 return sprintf(buf, "%#x\n", value);
1151 static ssize_t show_ab9540_dbbrstn(struct device *dev,
1152 struct device_attribute *attr, char *buf)
1154 struct ab8500 *ab8500;
1158 ab8500 = dev_get_drvdata(dev);
1160 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
1161 AB9540_MODEM_CTRL2_REG, &value);
1165 return sprintf(buf, "%d\n",
1166 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
1169 static ssize_t store_ab9540_dbbrstn(struct device *dev,
1170 struct device_attribute *attr, const char *buf, size_t count)
1172 struct ab8500 *ab8500;
1177 ab8500 = dev_get_drvdata(dev);
1185 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
1191 err = mask_and_set_register_interruptible(ab8500,
1192 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
1193 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
1195 dev_info(ab8500->dev,
1196 "Failed to set DBBRSTN %c, err %#x\n",
1204 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
1205 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
1206 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
1207 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
1208 show_ab9540_dbbrstn, store_ab9540_dbbrstn);
1210 static struct attribute *ab8500_sysfs_entries[] = {
1211 &dev_attr_chip_id.attr,
1212 &dev_attr_switch_off_status.attr,
1213 &dev_attr_turn_on_status.attr,
1217 static struct attribute *ab9540_sysfs_entries[] = {
1218 &dev_attr_chip_id.attr,
1219 &dev_attr_switch_off_status.attr,
1220 &dev_attr_turn_on_status.attr,
1221 &dev_attr_dbbrstn.attr,
1225 static struct attribute_group ab8500_attr_group = {
1226 .attrs = ab8500_sysfs_entries,
1229 static struct attribute_group ab9540_attr_group = {
1230 .attrs = ab9540_sysfs_entries,
1233 static int ab8500_probe(struct platform_device *pdev)
1235 static char *switch_off_status[] = {
1236 "Swoff bit programming",
1237 "Thermal protection activation",
1238 "Vbat lower then BattOk falling threshold",
1240 "Non presence of 32kHz clock",
1241 "Battery level lower than power on reset threshold",
1242 "Power on key 1 pressed longer than 10 seconds",
1243 "DB8500 thermal shutdown"};
1244 struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
1245 const struct platform_device_id *platid = platform_get_device_id(pdev);
1246 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1247 struct device_node *np = pdev->dev.of_node;
1248 struct ab8500 *ab8500;
1249 struct resource *resource;
1254 ab8500 = devm_kzalloc(&pdev->dev, sizeof *ab8500, GFP_KERNEL);
1259 ab8500->irq_base = plat->irq_base;
1261 ab8500->dev = &pdev->dev;
1263 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1267 ab8500->irq = resource->start;
1269 ab8500->read = ab8500_prcmu_read;
1270 ab8500->write = ab8500_prcmu_write;
1271 ab8500->write_masked = ab8500_prcmu_write_masked;
1273 mutex_init(&ab8500->lock);
1274 mutex_init(&ab8500->irq_lock);
1275 atomic_set(&ab8500->transfer_ongoing, 0);
1277 platform_set_drvdata(pdev, ab8500);
1280 version = platid->driver_data;
1282 if (version != AB8500_VERSION_UNDEFINED)
1283 ab8500->version = version;
1285 ret = get_register_interruptible(ab8500, AB8500_MISC,
1286 AB8500_IC_NAME_REG, &value);
1290 ab8500->version = value;
1293 ret = get_register_interruptible(ab8500, AB8500_MISC,
1294 AB8500_REV_REG, &value);
1298 ab8500->chip_id = value;
1300 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1301 ab8500_version_str[ab8500->version],
1302 ab8500->chip_id >> 4,
1303 ab8500->chip_id & 0x0F);
1305 /* Configure AB8500 or AB9540 IRQ */
1306 if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1307 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1308 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1310 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1311 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1313 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1316 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1317 if (!ab8500->oldmask)
1321 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1322 * 0x01 Swoff bit programming
1323 * 0x02 Thermal protection activation
1324 * 0x04 Vbat lower then BattOk falling threshold
1325 * 0x08 Watchdog expired
1326 * 0x10 Non presence of 32kHz clock
1327 * 0x20 Battery level lower than power on reset threshold
1328 * 0x40 Power on key 1 pressed longer than 10 seconds
1329 * 0x80 DB8500 thermal shutdown
1332 ret = get_register_interruptible(ab8500, AB8500_RTC,
1333 AB8500_SWITCH_OFF_STATUS, &value);
1336 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1339 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1341 printk(KERN_CONT " \"%s\"",
1342 switch_off_status[i]);
1346 printk(KERN_CONT "\n");
1348 printk(KERN_CONT " None\n");
1351 if (plat && plat->init)
1354 /* Clear and mask all interrupts */
1355 for (i = 0; i < ab8500->mask_size; i++) {
1357 * Interrupt register 12 doesn't exist prior to AB8500 version
1360 if (ab8500->irq_reg_offset[i] == 11 &&
1361 is_ab8500_1p1_or_earlier(ab8500))
1364 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1365 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1367 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1368 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1371 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1375 for (i = 0; i < ab8500->mask_size; i++)
1376 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1378 ret = ab8500_irq_init(ab8500, np);
1382 /* Activate this feature only in ab9540 */
1383 /* till tests are done on ab8500 1p2 or later*/
1384 if (is_ab9540(ab8500)) {
1385 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1386 ab8500_hierarchical_irq,
1387 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1391 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1393 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1399 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
1400 ARRAY_SIZE(abx500_common_devs), NULL,
1401 ab8500->irq_base, ab8500->domain);
1405 if (is_ab9540(ab8500))
1406 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1407 ARRAY_SIZE(ab9540_devs), NULL,
1408 ab8500->irq_base, ab8500->domain);
1410 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1411 ARRAY_SIZE(ab8500_devs), NULL,
1412 ab8500->irq_base, ab8500->domain);
1416 if (is_ab9540(ab8500) || is_ab8505(ab8500))
1417 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
1418 ARRAY_SIZE(ab9540_ab8505_devs), NULL,
1419 ab8500->irq_base, ab8500->domain);
1424 /* Add battery management devices */
1425 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1426 ARRAY_SIZE(ab8500_bm_devs), NULL,
1427 ab8500->irq_base, ab8500->domain);
1429 dev_err(ab8500->dev, "error adding bm devices\n");
1432 if (is_ab9540(ab8500))
1433 ret = sysfs_create_group(&ab8500->dev->kobj,
1434 &ab9540_attr_group);
1436 ret = sysfs_create_group(&ab8500->dev->kobj,
1437 &ab8500_attr_group);
1439 dev_err(ab8500->dev, "error creating sysfs entries\n");
1444 static int ab8500_remove(struct platform_device *pdev)
1446 struct ab8500 *ab8500 = platform_get_drvdata(pdev);
1448 if (is_ab9540(ab8500))
1449 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1451 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1453 mfd_remove_devices(ab8500->dev);
1458 static const struct platform_device_id ab8500_id[] = {
1459 { "ab8500-core", AB8500_VERSION_AB8500 },
1460 { "ab8505-i2c", AB8500_VERSION_AB8505 },
1461 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1462 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1466 static struct platform_driver ab8500_core_driver = {
1468 .name = "ab8500-core",
1469 .owner = THIS_MODULE,
1471 .probe = ab8500_probe,
1472 .remove = ab8500_remove,
1473 .id_table = ab8500_id,
1476 static int __init ab8500_core_init(void)
1478 return platform_driver_register(&ab8500_core_driver);
1481 static void __exit ab8500_core_exit(void)
1483 platform_driver_unregister(&ab8500_core_driver);
1485 core_initcall(ab8500_core_init);
1486 module_exit(ab8500_core_exit);
1488 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1489 MODULE_DESCRIPTION("AB8500 MFD core");
1490 MODULE_LICENSE("GPL v2");