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,
755 static struct resource ab8500_btemp_resources[] = {
757 .name = "BAT_CTRL_INDB",
758 .start = AB8500_INT_BAT_CTRL_INDB,
759 .end = AB8500_INT_BAT_CTRL_INDB,
760 .flags = IORESOURCE_IRQ,
764 .start = AB8500_INT_BTEMP_LOW,
765 .end = AB8500_INT_BTEMP_LOW,
766 .flags = IORESOURCE_IRQ,
769 .name = "BTEMP_HIGH",
770 .start = AB8500_INT_BTEMP_HIGH,
771 .end = AB8500_INT_BTEMP_HIGH,
772 .flags = IORESOURCE_IRQ,
775 .name = "BTEMP_LOW_MEDIUM",
776 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
777 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
778 .flags = IORESOURCE_IRQ,
781 .name = "BTEMP_MEDIUM_HIGH",
782 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
783 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
784 .flags = IORESOURCE_IRQ,
788 static struct resource ab8500_fg_resources[] = {
790 .name = "NCONV_ACCU",
791 .start = AB8500_INT_CCN_CONV_ACC,
792 .end = AB8500_INT_CCN_CONV_ACC,
793 .flags = IORESOURCE_IRQ,
797 .start = AB8500_INT_BATT_OVV,
798 .end = AB8500_INT_BATT_OVV,
799 .flags = IORESOURCE_IRQ,
803 .start = AB8500_INT_LOW_BAT_F,
804 .end = AB8500_INT_LOW_BAT_F,
805 .flags = IORESOURCE_IRQ,
809 .start = AB8500_INT_LOW_BAT_R,
810 .end = AB8500_INT_LOW_BAT_R,
811 .flags = IORESOURCE_IRQ,
814 .name = "CC_INT_CALIB",
815 .start = AB8500_INT_CC_INT_CALIB,
816 .end = AB8500_INT_CC_INT_CALIB,
817 .flags = IORESOURCE_IRQ,
821 .start = AB8500_INT_CCEOC,
822 .end = AB8500_INT_CCEOC,
823 .flags = IORESOURCE_IRQ,
827 static struct resource ab8500_chargalg_resources[] = {};
829 #ifdef CONFIG_DEBUG_FS
830 static struct resource ab8500_debug_resources[] = {
833 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
834 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
835 .flags = IORESOURCE_IRQ,
839 .start = AB8500_INT_XTAL32K_KO,
840 .end = AB8500_INT_XTAL32K_KO,
841 .flags = IORESOURCE_IRQ,
846 static struct resource ab8500_usb_resources[] = {
848 .name = "ID_WAKEUP_R",
849 .start = AB8500_INT_ID_WAKEUP_R,
850 .end = AB8500_INT_ID_WAKEUP_R,
851 .flags = IORESOURCE_IRQ,
854 .name = "ID_WAKEUP_F",
855 .start = AB8500_INT_ID_WAKEUP_F,
856 .end = AB8500_INT_ID_WAKEUP_F,
857 .flags = IORESOURCE_IRQ,
860 .name = "VBUS_DET_F",
861 .start = AB8500_INT_VBUS_DET_F,
862 .end = AB8500_INT_VBUS_DET_F,
863 .flags = IORESOURCE_IRQ,
866 .name = "VBUS_DET_R",
867 .start = AB8500_INT_VBUS_DET_R,
868 .end = AB8500_INT_VBUS_DET_R,
869 .flags = IORESOURCE_IRQ,
872 .name = "USB_LINK_STATUS",
873 .start = AB8500_INT_USB_LINK_STATUS,
874 .end = AB8500_INT_USB_LINK_STATUS,
875 .flags = IORESOURCE_IRQ,
878 .name = "USB_ADP_PROBE_PLUG",
879 .start = AB8500_INT_ADP_PROBE_PLUG,
880 .end = AB8500_INT_ADP_PROBE_PLUG,
881 .flags = IORESOURCE_IRQ,
884 .name = "USB_ADP_PROBE_UNPLUG",
885 .start = AB8500_INT_ADP_PROBE_UNPLUG,
886 .end = AB8500_INT_ADP_PROBE_UNPLUG,
887 .flags = IORESOURCE_IRQ,
891 static struct resource ab8505_iddet_resources[] = {
893 .name = "KeyDeglitch",
894 .start = AB8505_INT_KEYDEGLITCH,
895 .end = AB8505_INT_KEYDEGLITCH,
896 .flags = IORESOURCE_IRQ,
900 .start = AB8505_INT_KP,
901 .end = AB8505_INT_KP,
902 .flags = IORESOURCE_IRQ,
906 .start = AB8505_INT_IKP,
907 .end = AB8505_INT_IKP,
908 .flags = IORESOURCE_IRQ,
912 .start = AB8505_INT_IKR,
913 .end = AB8505_INT_IKR,
914 .flags = IORESOURCE_IRQ,
918 .start = AB8505_INT_KEYSTUCK,
919 .end = AB8505_INT_KEYSTUCK,
920 .flags = IORESOURCE_IRQ,
924 static struct resource ab8500_temp_resources[] = {
926 .name = "AB8500_TEMP_WARM",
927 .start = AB8500_INT_TEMP_WARM,
928 .end = AB8500_INT_TEMP_WARM,
929 .flags = IORESOURCE_IRQ,
933 static struct mfd_cell abx500_common_devs[] = {
934 #ifdef CONFIG_DEBUG_FS
936 .name = "ab8500-debug",
937 .of_compatible = "stericsson,ab8500-debug",
938 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
939 .resources = ab8500_debug_resources,
943 .name = "ab8500-sysctrl",
944 .of_compatible = "stericsson,ab8500-sysctrl",
947 .name = "ab8500-regulator",
948 .of_compatible = "stericsson,ab8500-regulator",
951 .name = "abx500-clk",
952 .of_compatible = "stericsson,abx500-clk",
955 .name = "ab8500-gpadc",
956 .of_compatible = "stericsson,ab8500-gpadc",
957 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
958 .resources = ab8500_gpadc_resources,
961 .name = "ab8500-rtc",
962 .of_compatible = "stericsson,ab8500-rtc",
963 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
964 .resources = ab8500_rtc_resources,
967 .name = "ab8500-acc-det",
968 .of_compatible = "stericsson,ab8500-acc-det",
969 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
970 .resources = ab8500_av_acc_detect_resources,
973 .name = "ab8500-poweron-key",
974 .of_compatible = "stericsson,ab8500-poweron-key",
975 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
976 .resources = ab8500_poweronkey_db_resources,
979 .name = "ab8500-pwm",
980 .of_compatible = "stericsson,ab8500-pwm",
984 .name = "ab8500-pwm",
985 .of_compatible = "stericsson,ab8500-pwm",
989 .name = "ab8500-pwm",
990 .of_compatible = "stericsson,ab8500-pwm",
994 .name = "ab8500-leds",
995 .of_compatible = "stericsson,ab8500-leds",
998 .name = "ab8500-denc",
999 .of_compatible = "stericsson,ab8500-denc",
1002 .name = "ab8500-temp",
1003 .of_compatible = "stericsson,ab8500-temp",
1004 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1005 .resources = ab8500_temp_resources,
1009 static struct mfd_cell ab8500_bm_devs[] = {
1011 .name = "ab8500-charger",
1012 .of_compatible = "stericsson,ab8500-charger",
1013 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
1014 .resources = ab8500_charger_resources,
1016 .platform_data = &ab8500_bm_data,
1017 .pdata_size = sizeof(ab8500_bm_data),
1021 .name = "ab8500-btemp",
1022 .of_compatible = "stericsson,ab8500-btemp",
1023 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
1024 .resources = ab8500_btemp_resources,
1026 .platform_data = &ab8500_bm_data,
1027 .pdata_size = sizeof(ab8500_bm_data),
1031 .name = "ab8500-fg",
1032 .of_compatible = "stericsson,ab8500-fg",
1033 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
1034 .resources = ab8500_fg_resources,
1036 .platform_data = &ab8500_bm_data,
1037 .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,
1046 .platform_data = &ab8500_bm_data,
1047 .pdata_size = sizeof(ab8500_bm_data),
1052 static struct mfd_cell ab8500_devs[] = {
1054 .name = "ab8500-gpio",
1055 .of_compatible = "stericsson,ab8500-gpio",
1058 .name = "ab8500-usb",
1059 .of_compatible = "stericsson,ab8500-usb",
1060 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1061 .resources = ab8500_usb_resources,
1064 .name = "ab8500-codec",
1065 .of_compatible = "stericsson,ab8500-codec",
1069 static struct mfd_cell ab9540_devs[] = {
1071 .name = "ab8500-gpio",
1074 .name = "ab9540-usb",
1075 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1076 .resources = ab8500_usb_resources,
1079 .name = "ab9540-codec",
1083 /* Device list common to ab9540 and ab8505 */
1084 static struct mfd_cell ab9540_ab8505_devs[] = {
1087 .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1088 .resources = ab8505_iddet_resources,
1092 static ssize_t show_chip_id(struct device *dev,
1093 struct device_attribute *attr, char *buf)
1095 struct ab8500 *ab8500;
1097 ab8500 = dev_get_drvdata(dev);
1098 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
1102 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1103 * 0x01 Swoff bit programming
1104 * 0x02 Thermal protection activation
1105 * 0x04 Vbat lower then BattOk falling threshold
1106 * 0x08 Watchdog expired
1107 * 0x10 Non presence of 32kHz clock
1108 * 0x20 Battery level lower than power on reset threshold
1109 * 0x40 Power on key 1 pressed longer than 10 seconds
1110 * 0x80 DB8500 thermal shutdown
1112 static ssize_t show_switch_off_status(struct device *dev,
1113 struct device_attribute *attr, char *buf)
1117 struct ab8500 *ab8500;
1119 ab8500 = dev_get_drvdata(dev);
1120 ret = get_register_interruptible(ab8500, AB8500_RTC,
1121 AB8500_SWITCH_OFF_STATUS, &value);
1124 return sprintf(buf, "%#x\n", value);
1128 * ab8500 has turned on due to (TURN_ON_STATUS):
1138 static ssize_t show_turn_on_status(struct device *dev,
1139 struct device_attribute *attr, char *buf)
1143 struct ab8500 *ab8500;
1145 ab8500 = dev_get_drvdata(dev);
1146 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1147 AB8500_TURN_ON_STATUS, &value);
1150 return sprintf(buf, "%#x\n", value);
1153 static ssize_t show_ab9540_dbbrstn(struct device *dev,
1154 struct device_attribute *attr, char *buf)
1156 struct ab8500 *ab8500;
1160 ab8500 = dev_get_drvdata(dev);
1162 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
1163 AB9540_MODEM_CTRL2_REG, &value);
1167 return sprintf(buf, "%d\n",
1168 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
1171 static ssize_t store_ab9540_dbbrstn(struct device *dev,
1172 struct device_attribute *attr, const char *buf, size_t count)
1174 struct ab8500 *ab8500;
1179 ab8500 = dev_get_drvdata(dev);
1187 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
1193 err = mask_and_set_register_interruptible(ab8500,
1194 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
1195 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
1197 dev_info(ab8500->dev,
1198 "Failed to set DBBRSTN %c, err %#x\n",
1206 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
1207 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
1208 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
1209 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
1210 show_ab9540_dbbrstn, store_ab9540_dbbrstn);
1212 static struct attribute *ab8500_sysfs_entries[] = {
1213 &dev_attr_chip_id.attr,
1214 &dev_attr_switch_off_status.attr,
1215 &dev_attr_turn_on_status.attr,
1219 static struct attribute *ab9540_sysfs_entries[] = {
1220 &dev_attr_chip_id.attr,
1221 &dev_attr_switch_off_status.attr,
1222 &dev_attr_turn_on_status.attr,
1223 &dev_attr_dbbrstn.attr,
1227 static struct attribute_group ab8500_attr_group = {
1228 .attrs = ab8500_sysfs_entries,
1231 static struct attribute_group ab9540_attr_group = {
1232 .attrs = ab9540_sysfs_entries,
1235 static int ab8500_probe(struct platform_device *pdev)
1237 static char *switch_off_status[] = {
1238 "Swoff bit programming",
1239 "Thermal protection activation",
1240 "Vbat lower then BattOk falling threshold",
1242 "Non presence of 32kHz clock",
1243 "Battery level lower than power on reset threshold",
1244 "Power on key 1 pressed longer than 10 seconds",
1245 "DB8500 thermal shutdown"};
1246 struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
1247 const struct platform_device_id *platid = platform_get_device_id(pdev);
1248 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1249 struct device_node *np = pdev->dev.of_node;
1250 struct ab8500 *ab8500;
1251 struct resource *resource;
1256 ab8500 = devm_kzalloc(&pdev->dev, sizeof *ab8500, GFP_KERNEL);
1261 ab8500->irq_base = plat->irq_base;
1263 ab8500->dev = &pdev->dev;
1265 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1269 ab8500->irq = resource->start;
1271 ab8500->read = ab8500_prcmu_read;
1272 ab8500->write = ab8500_prcmu_write;
1273 ab8500->write_masked = ab8500_prcmu_write_masked;
1275 mutex_init(&ab8500->lock);
1276 mutex_init(&ab8500->irq_lock);
1277 atomic_set(&ab8500->transfer_ongoing, 0);
1279 platform_set_drvdata(pdev, ab8500);
1282 version = platid->driver_data;
1284 if (version != AB8500_VERSION_UNDEFINED)
1285 ab8500->version = version;
1287 ret = get_register_interruptible(ab8500, AB8500_MISC,
1288 AB8500_IC_NAME_REG, &value);
1292 ab8500->version = value;
1295 ret = get_register_interruptible(ab8500, AB8500_MISC,
1296 AB8500_REV_REG, &value);
1300 ab8500->chip_id = value;
1302 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1303 ab8500_version_str[ab8500->version],
1304 ab8500->chip_id >> 4,
1305 ab8500->chip_id & 0x0F);
1307 /* Configure AB8500 or AB9540 IRQ */
1308 if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1309 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1310 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1312 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1313 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1315 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1318 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1319 if (!ab8500->oldmask)
1323 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1324 * 0x01 Swoff bit programming
1325 * 0x02 Thermal protection activation
1326 * 0x04 Vbat lower then BattOk falling threshold
1327 * 0x08 Watchdog expired
1328 * 0x10 Non presence of 32kHz clock
1329 * 0x20 Battery level lower than power on reset threshold
1330 * 0x40 Power on key 1 pressed longer than 10 seconds
1331 * 0x80 DB8500 thermal shutdown
1334 ret = get_register_interruptible(ab8500, AB8500_RTC,
1335 AB8500_SWITCH_OFF_STATUS, &value);
1338 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1341 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1343 printk(KERN_CONT " \"%s\"",
1344 switch_off_status[i]);
1348 printk(KERN_CONT "\n");
1350 printk(KERN_CONT " None\n");
1353 if (plat && plat->init)
1356 /* Clear and mask all interrupts */
1357 for (i = 0; i < ab8500->mask_size; i++) {
1359 * Interrupt register 12 doesn't exist prior to AB8500 version
1362 if (ab8500->irq_reg_offset[i] == 11 &&
1363 is_ab8500_1p1_or_earlier(ab8500))
1366 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1367 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1369 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1370 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1373 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1377 for (i = 0; i < ab8500->mask_size; i++)
1378 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1380 ret = ab8500_irq_init(ab8500, np);
1384 /* Activate this feature only in ab9540 */
1385 /* till tests are done on ab8500 1p2 or later*/
1386 if (is_ab9540(ab8500)) {
1387 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1388 ab8500_hierarchical_irq,
1389 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1393 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1395 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1401 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
1402 ARRAY_SIZE(abx500_common_devs), NULL,
1403 ab8500->irq_base, ab8500->domain);
1407 if (is_ab9540(ab8500))
1408 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1409 ARRAY_SIZE(ab9540_devs), NULL,
1410 ab8500->irq_base, ab8500->domain);
1412 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1413 ARRAY_SIZE(ab8500_devs), NULL,
1414 ab8500->irq_base, ab8500->domain);
1418 if (is_ab9540(ab8500) || is_ab8505(ab8500))
1419 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
1420 ARRAY_SIZE(ab9540_ab8505_devs), NULL,
1421 ab8500->irq_base, ab8500->domain);
1426 /* Add battery management devices */
1427 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1428 ARRAY_SIZE(ab8500_bm_devs), NULL,
1429 ab8500->irq_base, ab8500->domain);
1431 dev_err(ab8500->dev, "error adding bm devices\n");
1434 if (is_ab9540(ab8500))
1435 ret = sysfs_create_group(&ab8500->dev->kobj,
1436 &ab9540_attr_group);
1438 ret = sysfs_create_group(&ab8500->dev->kobj,
1439 &ab8500_attr_group);
1441 dev_err(ab8500->dev, "error creating sysfs entries\n");
1446 static int ab8500_remove(struct platform_device *pdev)
1448 struct ab8500 *ab8500 = platform_get_drvdata(pdev);
1450 if (is_ab9540(ab8500))
1451 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1453 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1455 mfd_remove_devices(ab8500->dev);
1460 static const struct platform_device_id ab8500_id[] = {
1461 { "ab8500-core", AB8500_VERSION_AB8500 },
1462 { "ab8505-i2c", AB8500_VERSION_AB8505 },
1463 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1464 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1468 static struct platform_driver ab8500_core_driver = {
1470 .name = "ab8500-core",
1471 .owner = THIS_MODULE,
1473 .probe = ab8500_probe,
1474 .remove = ab8500_remove,
1475 .id_table = ab8500_id,
1478 static int __init ab8500_core_init(void)
1480 return platform_driver_register(&ab8500_core_driver);
1483 static void __exit ab8500_core_exit(void)
1485 platform_driver_unregister(&ab8500_core_driver);
1487 core_initcall(ab8500_core_init);
1488 module_exit(ab8500_core_exit);
1490 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1491 MODULE_DESCRIPTION("AB8500 MFD core");
1492 MODULE_LICENSE("GPL v2");