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/dbx500-prcmu.h>
23 #include <linux/regulator/ab8500.h>
25 #include <linux/of_device.h>
28 * Interrupt register offsets
31 #define AB8500_IT_SOURCE1_REG 0x00
32 #define AB8500_IT_SOURCE2_REG 0x01
33 #define AB8500_IT_SOURCE3_REG 0x02
34 #define AB8500_IT_SOURCE4_REG 0x03
35 #define AB8500_IT_SOURCE5_REG 0x04
36 #define AB8500_IT_SOURCE6_REG 0x05
37 #define AB8500_IT_SOURCE7_REG 0x06
38 #define AB8500_IT_SOURCE8_REG 0x07
39 #define AB9540_IT_SOURCE13_REG 0x0C
40 #define AB8500_IT_SOURCE19_REG 0x12
41 #define AB8500_IT_SOURCE20_REG 0x13
42 #define AB8500_IT_SOURCE21_REG 0x14
43 #define AB8500_IT_SOURCE22_REG 0x15
44 #define AB8500_IT_SOURCE23_REG 0x16
45 #define AB8500_IT_SOURCE24_REG 0x17
50 #define AB8500_IT_LATCH1_REG 0x20
51 #define AB8500_IT_LATCH2_REG 0x21
52 #define AB8500_IT_LATCH3_REG 0x22
53 #define AB8500_IT_LATCH4_REG 0x23
54 #define AB8500_IT_LATCH5_REG 0x24
55 #define AB8500_IT_LATCH6_REG 0x25
56 #define AB8500_IT_LATCH7_REG 0x26
57 #define AB8500_IT_LATCH8_REG 0x27
58 #define AB8500_IT_LATCH9_REG 0x28
59 #define AB8500_IT_LATCH10_REG 0x29
60 #define AB8500_IT_LATCH12_REG 0x2B
61 #define AB9540_IT_LATCH13_REG 0x2C
62 #define AB8500_IT_LATCH19_REG 0x32
63 #define AB8500_IT_LATCH20_REG 0x33
64 #define AB8500_IT_LATCH21_REG 0x34
65 #define AB8500_IT_LATCH22_REG 0x35
66 #define AB8500_IT_LATCH23_REG 0x36
67 #define AB8500_IT_LATCH24_REG 0x37
73 #define AB8500_IT_MASK1_REG 0x40
74 #define AB8500_IT_MASK2_REG 0x41
75 #define AB8500_IT_MASK3_REG 0x42
76 #define AB8500_IT_MASK4_REG 0x43
77 #define AB8500_IT_MASK5_REG 0x44
78 #define AB8500_IT_MASK6_REG 0x45
79 #define AB8500_IT_MASK7_REG 0x46
80 #define AB8500_IT_MASK8_REG 0x47
81 #define AB8500_IT_MASK9_REG 0x48
82 #define AB8500_IT_MASK10_REG 0x49
83 #define AB8500_IT_MASK11_REG 0x4A
84 #define AB8500_IT_MASK12_REG 0x4B
85 #define AB8500_IT_MASK13_REG 0x4C
86 #define AB8500_IT_MASK14_REG 0x4D
87 #define AB8500_IT_MASK15_REG 0x4E
88 #define AB8500_IT_MASK16_REG 0x4F
89 #define AB8500_IT_MASK17_REG 0x50
90 #define AB8500_IT_MASK18_REG 0x51
91 #define AB8500_IT_MASK19_REG 0x52
92 #define AB8500_IT_MASK20_REG 0x53
93 #define AB8500_IT_MASK21_REG 0x54
94 #define AB8500_IT_MASK22_REG 0x55
95 #define AB8500_IT_MASK23_REG 0x56
96 #define AB8500_IT_MASK24_REG 0x57
99 * latch hierarchy registers
101 #define AB8500_IT_LATCHHIER1_REG 0x60
102 #define AB8500_IT_LATCHHIER2_REG 0x61
103 #define AB8500_IT_LATCHHIER3_REG 0x62
105 #define AB8500_IT_LATCHHIER_NUM 3
107 #define AB8500_REV_REG 0x80
108 #define AB8500_IC_NAME_REG 0x82
109 #define AB8500_SWITCH_OFF_STATUS 0x00
111 #define AB8500_TURN_ON_STATUS 0x00
113 static bool no_bm; /* No battery management */
114 module_param(no_bm, bool, S_IRUGO);
116 #define AB9540_MODEM_CTRL2_REG 0x23
117 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
120 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
121 * numbers are indexed into this array with (num / 8). The interupts are
122 * defined in linux/mfd/ab8500.h
124 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
128 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
129 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
133 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
134 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
137 static const char ab8500_version_str[][7] = {
138 [AB8500_VERSION_AB8500] = "AB8500",
139 [AB8500_VERSION_AB8505] = "AB8505",
140 [AB8500_VERSION_AB9540] = "AB9540",
141 [AB8500_VERSION_AB8540] = "AB8540",
144 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
148 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
150 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
154 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
159 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
162 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
166 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
171 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
173 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
179 static int ab8500_get_chip_id(struct device *dev)
181 struct ab8500 *ab8500;
185 ab8500 = dev_get_drvdata(dev->parent);
186 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
189 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
194 * Put the u8 bank and u8 register together into a an u16.
195 * The bank on higher 8 bits and register in lower 8 bits.
197 u16 addr = ((u16)bank) << 8 | reg;
199 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
201 mutex_lock(&ab8500->lock);
203 ret = ab8500->write(ab8500, addr, data);
205 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
207 mutex_unlock(&ab8500->lock);
212 static int ab8500_set_register(struct device *dev, u8 bank,
216 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
218 atomic_inc(&ab8500->transfer_ongoing);
219 ret = set_register_interruptible(ab8500, bank, reg, value);
220 atomic_dec(&ab8500->transfer_ongoing);
224 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
228 /* put the u8 bank and u8 reg together into a an u16.
229 * bank on higher 8 bits and reg in lower */
230 u16 addr = ((u16)bank) << 8 | reg;
232 mutex_lock(&ab8500->lock);
234 ret = ab8500->read(ab8500, addr);
236 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
241 mutex_unlock(&ab8500->lock);
242 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
247 static int ab8500_get_register(struct device *dev, u8 bank,
251 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
253 atomic_inc(&ab8500->transfer_ongoing);
254 ret = get_register_interruptible(ab8500, bank, reg, value);
255 atomic_dec(&ab8500->transfer_ongoing);
259 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
260 u8 reg, u8 bitmask, u8 bitvalues)
263 /* put the u8 bank and u8 reg together into a an u16.
264 * bank on higher 8 bits and reg in lower */
265 u16 addr = ((u16)bank) << 8 | reg;
267 mutex_lock(&ab8500->lock);
269 if (ab8500->write_masked == NULL) {
272 ret = ab8500->read(ab8500, addr);
274 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
280 data = (~bitmask & data) | (bitmask & bitvalues);
282 ret = ab8500->write(ab8500, addr, data);
284 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
287 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
291 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
293 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
296 mutex_unlock(&ab8500->lock);
300 static int ab8500_mask_and_set_register(struct device *dev,
301 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
304 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
306 atomic_inc(&ab8500->transfer_ongoing);
307 ret= mask_and_set_register_interruptible(ab8500, bank, reg,
309 atomic_dec(&ab8500->transfer_ongoing);
313 static struct abx500_ops ab8500_ops = {
314 .get_chip_id = ab8500_get_chip_id,
315 .get_register = ab8500_get_register,
316 .set_register = ab8500_set_register,
317 .get_register_page = NULL,
318 .set_register_page = NULL,
319 .mask_and_set_register = ab8500_mask_and_set_register,
320 .event_registers_startup_state_get = NULL,
321 .startup_irq_enabled = NULL,
324 static void ab8500_irq_lock(struct irq_data *data)
326 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
328 mutex_lock(&ab8500->irq_lock);
329 atomic_inc(&ab8500->transfer_ongoing);
332 static void ab8500_irq_sync_unlock(struct irq_data *data)
334 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
337 for (i = 0; i < ab8500->mask_size; i++) {
338 u8 old = ab8500->oldmask[i];
339 u8 new = ab8500->mask[i];
346 * Interrupt register 12 doesn't exist prior to AB8500 version
349 if (ab8500->irq_reg_offset[i] == 11 &&
350 is_ab8500_1p1_or_earlier(ab8500))
353 ab8500->oldmask[i] = new;
355 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
356 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
358 atomic_dec(&ab8500->transfer_ongoing);
359 mutex_unlock(&ab8500->irq_lock);
362 static void ab8500_irq_mask(struct irq_data *data)
364 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
365 int offset = data->hwirq;
366 int index = offset / 8;
367 int mask = 1 << (offset % 8);
369 ab8500->mask[index] |= mask;
372 static void ab8500_irq_unmask(struct irq_data *data)
374 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
375 int offset = data->hwirq;
376 int index = offset / 8;
377 int mask = 1 << (offset % 8);
379 ab8500->mask[index] &= ~mask;
382 static struct irq_chip ab8500_irq_chip = {
384 .irq_bus_lock = ab8500_irq_lock,
385 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
386 .irq_mask = ab8500_irq_mask,
387 .irq_disable = ab8500_irq_mask,
388 .irq_unmask = ab8500_irq_unmask,
391 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
392 int latch_offset, u8 latch_val)
394 int int_bit = __ffs(latch_val);
398 int_bit = __ffs(latch_val);
400 for (i = 0; i < ab8500->mask_size; i++)
401 if (ab8500->irq_reg_offset[i] == latch_offset)
404 if (i >= ab8500->mask_size) {
405 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
410 line = (i << 3) + int_bit;
411 latch_val &= ~(1 << int_bit);
413 handle_nested_irq(ab8500->irq_base + line);
419 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
420 int hier_offset, u8 hier_val)
422 int latch_bit, status;
423 u8 latch_offset, latch_val;
426 latch_bit = __ffs(hier_val);
427 latch_offset = (hier_offset << 3) + latch_bit;
429 /* Fix inconsistent ITFromLatch25 bit mapping... */
430 if (unlikely(latch_offset == 17))
433 status = get_register_interruptible(ab8500,
435 AB8500_IT_LATCH1_REG + latch_offset,
437 if (status < 0 || latch_val == 0)
440 status = ab8500_handle_hierarchical_line(ab8500,
441 latch_offset, latch_val);
445 hier_val &= ~(1 << latch_bit);
451 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
453 struct ab8500 *ab8500 = dev;
456 dev_vdbg(ab8500->dev, "interrupt\n");
458 /* Hierarchical interrupt version */
459 for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) {
463 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
464 AB8500_IT_LATCHHIER1_REG + i, &hier_val);
465 if (status < 0 || hier_val == 0)
468 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
476 * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ
478 * @ab8500: ab8500_irq controller to operate on.
479 * @irq: index of the interrupt requested in the chip IRQs
481 * Useful for drivers to request their own IRQs.
483 static int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq)
488 return irq_create_mapping(ab8500->domain, irq);
491 static irqreturn_t ab8500_irq(int irq, void *dev)
493 struct ab8500 *ab8500 = dev;
496 dev_vdbg(ab8500->dev, "interrupt\n");
498 atomic_inc(&ab8500->transfer_ongoing);
500 for (i = 0; i < ab8500->mask_size; i++) {
501 int regoffset = ab8500->irq_reg_offset[i];
506 * Interrupt register 12 doesn't exist prior to AB8500 version
509 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
512 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
513 AB8500_IT_LATCH1_REG + regoffset, &value);
514 if (status < 0 || value == 0)
518 int bit = __ffs(value);
519 int line = i * 8 + bit;
520 int virq = ab8500_irq_get_virq(ab8500, line);
522 handle_nested_irq(virq);
523 value &= ~(1 << bit);
527 atomic_dec(&ab8500->transfer_ongoing);
531 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
532 irq_hw_number_t hwirq)
534 struct ab8500 *ab8500 = d->host_data;
539 irq_set_chip_data(virq, ab8500);
540 irq_set_chip_and_handler(virq, &ab8500_irq_chip,
542 irq_set_nested_thread(virq, 1);
544 set_irq_flags(virq, IRQF_VALID);
546 irq_set_noprobe(virq);
552 static struct irq_domain_ops ab8500_irq_ops = {
553 .map = ab8500_irq_map,
554 .xlate = irq_domain_xlate_twocell,
557 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
561 if (is_ab9540(ab8500))
562 num_irqs = AB9540_NR_IRQS;
563 else if (is_ab8505(ab8500))
564 num_irqs = AB8505_NR_IRQS;
566 num_irqs = AB8500_NR_IRQS;
568 if (ab8500->irq_base) {
569 ab8500->domain = irq_domain_add_legacy(
570 NULL, num_irqs, ab8500->irq_base,
571 0, &ab8500_irq_ops, ab8500);
574 ab8500->domain = irq_domain_add_linear(
575 np, num_irqs, &ab8500_irq_ops, ab8500);
578 if (!ab8500->domain) {
579 dev_err(ab8500->dev, "Failed to create irqdomain\n");
586 int ab8500_suspend(struct ab8500 *ab8500)
588 if (atomic_read(&ab8500->transfer_ongoing))
594 /* AB8500 GPIO Resources */
595 static struct resource __devinitdata ab8500_gpio_resources[] = {
598 .start = AB8500_INT_GPIO6R,
599 .end = AB8500_INT_GPIO41F,
600 .flags = IORESOURCE_IRQ,
604 /* AB9540 GPIO Resources */
605 static struct resource __devinitdata ab9540_gpio_resources[] = {
608 .start = AB8500_INT_GPIO6R,
609 .end = AB8500_INT_GPIO41F,
610 .flags = IORESOURCE_IRQ,
613 .name = "GPIO_INT14",
614 .start = AB9540_INT_GPIO50R,
615 .end = AB9540_INT_GPIO54R,
616 .flags = IORESOURCE_IRQ,
619 .name = "GPIO_INT15",
620 .start = AB9540_INT_GPIO50F,
621 .end = AB9540_INT_GPIO54F,
622 .flags = IORESOURCE_IRQ,
626 static struct resource ab8500_gpadc_resources[] = {
628 .name = "HW_CONV_END",
629 .start = AB8500_INT_GP_HW_ADC_CONV_END,
630 .end = AB8500_INT_GP_HW_ADC_CONV_END,
631 .flags = IORESOURCE_IRQ,
634 .name = "SW_CONV_END",
635 .start = AB8500_INT_GP_SW_ADC_CONV_END,
636 .end = AB8500_INT_GP_SW_ADC_CONV_END,
637 .flags = IORESOURCE_IRQ,
641 static struct resource ab8500_rtc_resources[] = {
644 .start = AB8500_INT_RTC_60S,
645 .end = AB8500_INT_RTC_60S,
646 .flags = IORESOURCE_IRQ,
650 .start = AB8500_INT_RTC_ALARM,
651 .end = AB8500_INT_RTC_ALARM,
652 .flags = IORESOURCE_IRQ,
656 static struct resource ab8500_poweronkey_db_resources[] = {
659 .start = AB8500_INT_PON_KEY1DB_F,
660 .end = AB8500_INT_PON_KEY1DB_F,
661 .flags = IORESOURCE_IRQ,
665 .start = AB8500_INT_PON_KEY1DB_R,
666 .end = AB8500_INT_PON_KEY1DB_R,
667 .flags = IORESOURCE_IRQ,
671 static struct resource ab8500_av_acc_detect_resources[] = {
673 .name = "ACC_DETECT_1DB_F",
674 .start = AB8500_INT_ACC_DETECT_1DB_F,
675 .end = AB8500_INT_ACC_DETECT_1DB_F,
676 .flags = IORESOURCE_IRQ,
679 .name = "ACC_DETECT_1DB_R",
680 .start = AB8500_INT_ACC_DETECT_1DB_R,
681 .end = AB8500_INT_ACC_DETECT_1DB_R,
682 .flags = IORESOURCE_IRQ,
685 .name = "ACC_DETECT_21DB_F",
686 .start = AB8500_INT_ACC_DETECT_21DB_F,
687 .end = AB8500_INT_ACC_DETECT_21DB_F,
688 .flags = IORESOURCE_IRQ,
691 .name = "ACC_DETECT_21DB_R",
692 .start = AB8500_INT_ACC_DETECT_21DB_R,
693 .end = AB8500_INT_ACC_DETECT_21DB_R,
694 .flags = IORESOURCE_IRQ,
697 .name = "ACC_DETECT_22DB_F",
698 .start = AB8500_INT_ACC_DETECT_22DB_F,
699 .end = AB8500_INT_ACC_DETECT_22DB_F,
700 .flags = IORESOURCE_IRQ,
703 .name = "ACC_DETECT_22DB_R",
704 .start = AB8500_INT_ACC_DETECT_22DB_R,
705 .end = AB8500_INT_ACC_DETECT_22DB_R,
706 .flags = IORESOURCE_IRQ,
710 static struct resource ab8500_charger_resources[] = {
712 .name = "MAIN_CH_UNPLUG_DET",
713 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
714 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
715 .flags = IORESOURCE_IRQ,
718 .name = "MAIN_CHARGE_PLUG_DET",
719 .start = AB8500_INT_MAIN_CH_PLUG_DET,
720 .end = AB8500_INT_MAIN_CH_PLUG_DET,
721 .flags = IORESOURCE_IRQ,
724 .name = "VBUS_DET_R",
725 .start = AB8500_INT_VBUS_DET_R,
726 .end = AB8500_INT_VBUS_DET_R,
727 .flags = IORESOURCE_IRQ,
730 .name = "VBUS_DET_F",
731 .start = AB8500_INT_VBUS_DET_F,
732 .end = AB8500_INT_VBUS_DET_F,
733 .flags = IORESOURCE_IRQ,
736 .name = "USB_LINK_STATUS",
737 .start = AB8500_INT_USB_LINK_STATUS,
738 .end = AB8500_INT_USB_LINK_STATUS,
739 .flags = IORESOURCE_IRQ,
743 .start = AB8500_INT_VBUS_OVV,
744 .end = AB8500_INT_VBUS_OVV,
745 .flags = IORESOURCE_IRQ,
748 .name = "USB_CH_TH_PROT_R",
749 .start = AB8500_INT_USB_CH_TH_PROT_R,
750 .end = AB8500_INT_USB_CH_TH_PROT_R,
751 .flags = IORESOURCE_IRQ,
754 .name = "USB_CH_TH_PROT_F",
755 .start = AB8500_INT_USB_CH_TH_PROT_F,
756 .end = AB8500_INT_USB_CH_TH_PROT_F,
757 .flags = IORESOURCE_IRQ,
760 .name = "MAIN_EXT_CH_NOT_OK",
761 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
762 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
763 .flags = IORESOURCE_IRQ,
766 .name = "MAIN_CH_TH_PROT_R",
767 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
768 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
769 .flags = IORESOURCE_IRQ,
772 .name = "MAIN_CH_TH_PROT_F",
773 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
774 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
775 .flags = IORESOURCE_IRQ,
778 .name = "USB_CHARGER_NOT_OKR",
779 .start = AB8500_INT_USB_CHARGER_NOT_OKR,
780 .end = AB8500_INT_USB_CHARGER_NOT_OKR,
781 .flags = IORESOURCE_IRQ,
785 .start = AB8500_INT_CH_WD_EXP,
786 .end = AB8500_INT_CH_WD_EXP,
787 .flags = IORESOURCE_IRQ,
791 static struct resource ab8500_btemp_resources[] = {
793 .name = "BAT_CTRL_INDB",
794 .start = AB8500_INT_BAT_CTRL_INDB,
795 .end = AB8500_INT_BAT_CTRL_INDB,
796 .flags = IORESOURCE_IRQ,
800 .start = AB8500_INT_BTEMP_LOW,
801 .end = AB8500_INT_BTEMP_LOW,
802 .flags = IORESOURCE_IRQ,
805 .name = "BTEMP_HIGH",
806 .start = AB8500_INT_BTEMP_HIGH,
807 .end = AB8500_INT_BTEMP_HIGH,
808 .flags = IORESOURCE_IRQ,
811 .name = "BTEMP_LOW_MEDIUM",
812 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
813 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
814 .flags = IORESOURCE_IRQ,
817 .name = "BTEMP_MEDIUM_HIGH",
818 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
819 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
820 .flags = IORESOURCE_IRQ,
824 static struct resource ab8500_fg_resources[] = {
826 .name = "NCONV_ACCU",
827 .start = AB8500_INT_CCN_CONV_ACC,
828 .end = AB8500_INT_CCN_CONV_ACC,
829 .flags = IORESOURCE_IRQ,
833 .start = AB8500_INT_BATT_OVV,
834 .end = AB8500_INT_BATT_OVV,
835 .flags = IORESOURCE_IRQ,
839 .start = AB8500_INT_LOW_BAT_F,
840 .end = AB8500_INT_LOW_BAT_F,
841 .flags = IORESOURCE_IRQ,
845 .start = AB8500_INT_LOW_BAT_R,
846 .end = AB8500_INT_LOW_BAT_R,
847 .flags = IORESOURCE_IRQ,
850 .name = "CC_INT_CALIB",
851 .start = AB8500_INT_CC_INT_CALIB,
852 .end = AB8500_INT_CC_INT_CALIB,
853 .flags = IORESOURCE_IRQ,
857 .start = AB8500_INT_CCEOC,
858 .end = AB8500_INT_CCEOC,
859 .flags = IORESOURCE_IRQ,
863 static struct resource ab8500_chargalg_resources[] = {};
865 #ifdef CONFIG_DEBUG_FS
866 static struct resource ab8500_debug_resources[] = {
869 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
870 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
871 .flags = IORESOURCE_IRQ,
875 .start = AB8500_INT_XTAL32K_KO,
876 .end = AB8500_INT_XTAL32K_KO,
877 .flags = IORESOURCE_IRQ,
882 static struct resource ab8500_usb_resources[] = {
884 .name = "ID_WAKEUP_R",
885 .start = AB8500_INT_ID_WAKEUP_R,
886 .end = AB8500_INT_ID_WAKEUP_R,
887 .flags = IORESOURCE_IRQ,
890 .name = "ID_WAKEUP_F",
891 .start = AB8500_INT_ID_WAKEUP_F,
892 .end = AB8500_INT_ID_WAKEUP_F,
893 .flags = IORESOURCE_IRQ,
896 .name = "VBUS_DET_F",
897 .start = AB8500_INT_VBUS_DET_F,
898 .end = AB8500_INT_VBUS_DET_F,
899 .flags = IORESOURCE_IRQ,
902 .name = "VBUS_DET_R",
903 .start = AB8500_INT_VBUS_DET_R,
904 .end = AB8500_INT_VBUS_DET_R,
905 .flags = IORESOURCE_IRQ,
908 .name = "USB_LINK_STATUS",
909 .start = AB8500_INT_USB_LINK_STATUS,
910 .end = AB8500_INT_USB_LINK_STATUS,
911 .flags = IORESOURCE_IRQ,
914 .name = "USB_ADP_PROBE_PLUG",
915 .start = AB8500_INT_ADP_PROBE_PLUG,
916 .end = AB8500_INT_ADP_PROBE_PLUG,
917 .flags = IORESOURCE_IRQ,
920 .name = "USB_ADP_PROBE_UNPLUG",
921 .start = AB8500_INT_ADP_PROBE_UNPLUG,
922 .end = AB8500_INT_ADP_PROBE_UNPLUG,
923 .flags = IORESOURCE_IRQ,
927 static struct resource ab8505_iddet_resources[] = {
929 .name = "KeyDeglitch",
930 .start = AB8505_INT_KEYDEGLITCH,
931 .end = AB8505_INT_KEYDEGLITCH,
932 .flags = IORESOURCE_IRQ,
936 .start = AB8505_INT_KP,
937 .end = AB8505_INT_KP,
938 .flags = IORESOURCE_IRQ,
942 .start = AB8505_INT_IKP,
943 .end = AB8505_INT_IKP,
944 .flags = IORESOURCE_IRQ,
948 .start = AB8505_INT_IKR,
949 .end = AB8505_INT_IKR,
950 .flags = IORESOURCE_IRQ,
954 .start = AB8505_INT_KEYSTUCK,
955 .end = AB8505_INT_KEYSTUCK,
956 .flags = IORESOURCE_IRQ,
960 static struct resource ab8500_temp_resources[] = {
962 .name = "AB8500_TEMP_WARM",
963 .start = AB8500_INT_TEMP_WARM,
964 .end = AB8500_INT_TEMP_WARM,
965 .flags = IORESOURCE_IRQ,
969 static struct mfd_cell abx500_common_devs[] = {
970 #ifdef CONFIG_DEBUG_FS
972 .name = "ab8500-debug",
973 .of_compatible = "stericsson,ab8500-debug",
974 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
975 .resources = ab8500_debug_resources,
979 .name = "ab8500-sysctrl",
980 .of_compatible = "stericsson,ab8500-sysctrl",
983 .name = "ab8500-regulator",
984 .of_compatible = "stericsson,ab8500-regulator",
987 .name = "ab8500-gpadc",
988 .of_compatible = "stericsson,ab8500-gpadc",
989 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
990 .resources = ab8500_gpadc_resources,
993 .name = "ab8500-rtc",
994 .of_compatible = "stericsson,ab8500-rtc",
995 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
996 .resources = ab8500_rtc_resources,
999 .name = "ab8500-acc-det",
1000 .of_compatible = "stericsson,ab8500-acc-det",
1001 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
1002 .resources = ab8500_av_acc_detect_resources,
1005 .name = "ab8500-poweron-key",
1006 .of_compatible = "stericsson,ab8500-poweron-key",
1007 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
1008 .resources = ab8500_poweronkey_db_resources,
1011 .name = "ab8500-pwm",
1012 .of_compatible = "stericsson,ab8500-pwm",
1016 .name = "ab8500-pwm",
1017 .of_compatible = "stericsson,ab8500-pwm",
1021 .name = "ab8500-pwm",
1022 .of_compatible = "stericsson,ab8500-pwm",
1026 .name = "ab8500-leds",
1027 .of_compatible = "stericsson,ab8500-leds",
1030 .name = "ab8500-denc",
1031 .of_compatible = "stericsson,ab8500-denc",
1034 .name = "ab8500-temp",
1035 .of_compatible = "stericsson,ab8500-temp",
1036 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1037 .resources = ab8500_temp_resources,
1041 static struct mfd_cell ab8500_bm_devs[] = {
1043 .name = "ab8500-charger",
1044 .of_compatible = "stericsson,ab8500-charger",
1045 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
1046 .resources = ab8500_charger_resources,
1048 .platform_data = &ab8500_bm_data,
1049 .pdata_size = sizeof(ab8500_bm_data),
1053 .name = "ab8500-btemp",
1054 .of_compatible = "stericsson,ab8500-btemp",
1055 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
1056 .resources = ab8500_btemp_resources,
1058 .platform_data = &ab8500_bm_data,
1059 .pdata_size = sizeof(ab8500_bm_data),
1063 .name = "ab8500-fg",
1064 .of_compatible = "stericsson,ab8500-fg",
1065 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
1066 .resources = ab8500_fg_resources,
1068 .platform_data = &ab8500_bm_data,
1069 .pdata_size = sizeof(ab8500_bm_data),
1073 .name = "ab8500-chargalg",
1074 .of_compatible = "stericsson,ab8500-chargalg",
1075 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
1076 .resources = ab8500_chargalg_resources,
1078 .platform_data = &ab8500_bm_data,
1079 .pdata_size = sizeof(ab8500_bm_data),
1084 static struct mfd_cell ab8500_devs[] = {
1086 .name = "ab8500-gpio",
1087 .of_compatible = "stericsson,ab8500-gpio",
1088 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
1089 .resources = ab8500_gpio_resources,
1092 .name = "ab8500-usb",
1093 .of_compatible = "stericsson,ab8500-usb",
1094 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1095 .resources = ab8500_usb_resources,
1098 .name = "ab8500-codec",
1099 .of_compatible = "stericsson,ab8500-codec",
1103 static struct mfd_cell ab9540_devs[] = {
1105 .name = "ab8500-gpio",
1106 .num_resources = ARRAY_SIZE(ab9540_gpio_resources),
1107 .resources = ab9540_gpio_resources,
1110 .name = "ab9540-usb",
1111 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1112 .resources = ab8500_usb_resources,
1115 .name = "ab9540-codec",
1119 /* Device list common to ab9540 and ab8505 */
1120 static struct mfd_cell ab9540_ab8505_devs[] = {
1123 .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1124 .resources = ab8505_iddet_resources,
1128 static ssize_t show_chip_id(struct device *dev,
1129 struct device_attribute *attr, char *buf)
1131 struct ab8500 *ab8500;
1133 ab8500 = dev_get_drvdata(dev);
1134 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
1138 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1139 * 0x01 Swoff bit programming
1140 * 0x02 Thermal protection activation
1141 * 0x04 Vbat lower then BattOk falling threshold
1142 * 0x08 Watchdog expired
1143 * 0x10 Non presence of 32kHz clock
1144 * 0x20 Battery level lower than power on reset threshold
1145 * 0x40 Power on key 1 pressed longer than 10 seconds
1146 * 0x80 DB8500 thermal shutdown
1148 static ssize_t show_switch_off_status(struct device *dev,
1149 struct device_attribute *attr, char *buf)
1153 struct ab8500 *ab8500;
1155 ab8500 = dev_get_drvdata(dev);
1156 ret = get_register_interruptible(ab8500, AB8500_RTC,
1157 AB8500_SWITCH_OFF_STATUS, &value);
1160 return sprintf(buf, "%#x\n", value);
1164 * ab8500 has turned on due to (TURN_ON_STATUS):
1174 static ssize_t show_turn_on_status(struct device *dev,
1175 struct device_attribute *attr, char *buf)
1179 struct ab8500 *ab8500;
1181 ab8500 = dev_get_drvdata(dev);
1182 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1183 AB8500_TURN_ON_STATUS, &value);
1186 return sprintf(buf, "%#x\n", value);
1189 static ssize_t show_ab9540_dbbrstn(struct device *dev,
1190 struct device_attribute *attr, char *buf)
1192 struct ab8500 *ab8500;
1196 ab8500 = dev_get_drvdata(dev);
1198 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
1199 AB9540_MODEM_CTRL2_REG, &value);
1203 return sprintf(buf, "%d\n",
1204 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
1207 static ssize_t store_ab9540_dbbrstn(struct device *dev,
1208 struct device_attribute *attr, const char *buf, size_t count)
1210 struct ab8500 *ab8500;
1215 ab8500 = dev_get_drvdata(dev);
1223 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
1229 err = mask_and_set_register_interruptible(ab8500,
1230 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
1231 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
1233 dev_info(ab8500->dev,
1234 "Failed to set DBBRSTN %c, err %#x\n",
1242 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
1243 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
1244 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
1245 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
1246 show_ab9540_dbbrstn, store_ab9540_dbbrstn);
1248 static struct attribute *ab8500_sysfs_entries[] = {
1249 &dev_attr_chip_id.attr,
1250 &dev_attr_switch_off_status.attr,
1251 &dev_attr_turn_on_status.attr,
1255 static struct attribute *ab9540_sysfs_entries[] = {
1256 &dev_attr_chip_id.attr,
1257 &dev_attr_switch_off_status.attr,
1258 &dev_attr_turn_on_status.attr,
1259 &dev_attr_dbbrstn.attr,
1263 static struct attribute_group ab8500_attr_group = {
1264 .attrs = ab8500_sysfs_entries,
1267 static struct attribute_group ab9540_attr_group = {
1268 .attrs = ab9540_sysfs_entries,
1271 static int ab8500_probe(struct platform_device *pdev)
1273 static char *switch_off_status[] = {
1274 "Swoff bit programming",
1275 "Thermal protection activation",
1276 "Vbat lower then BattOk falling threshold",
1278 "Non presence of 32kHz clock",
1279 "Battery level lower than power on reset threshold",
1280 "Power on key 1 pressed longer than 10 seconds",
1281 "DB8500 thermal shutdown"};
1282 struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
1283 const struct platform_device_id *platid = platform_get_device_id(pdev);
1284 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1285 struct device_node *np = pdev->dev.of_node;
1286 struct ab8500 *ab8500;
1287 struct resource *resource;
1292 ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL);
1297 ab8500->irq_base = plat->irq_base;
1299 ab8500->dev = &pdev->dev;
1301 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1304 goto out_free_ab8500;
1307 ab8500->irq = resource->start;
1309 ab8500->read = ab8500_prcmu_read;
1310 ab8500->write = ab8500_prcmu_write;
1311 ab8500->write_masked = ab8500_prcmu_write_masked;
1313 mutex_init(&ab8500->lock);
1314 mutex_init(&ab8500->irq_lock);
1315 atomic_set(&ab8500->transfer_ongoing, 0);
1317 platform_set_drvdata(pdev, ab8500);
1320 version = platid->driver_data;
1322 if (version != AB8500_VERSION_UNDEFINED)
1323 ab8500->version = version;
1325 ret = get_register_interruptible(ab8500, AB8500_MISC,
1326 AB8500_IC_NAME_REG, &value);
1328 goto out_free_ab8500;
1330 ab8500->version = value;
1333 ret = get_register_interruptible(ab8500, AB8500_MISC,
1334 AB8500_REV_REG, &value);
1336 goto out_free_ab8500;
1338 ab8500->chip_id = value;
1340 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1341 ab8500_version_str[ab8500->version],
1342 ab8500->chip_id >> 4,
1343 ab8500->chip_id & 0x0F);
1345 /* Configure AB8500 or AB9540 IRQ */
1346 if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1347 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1348 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1350 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1351 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1353 ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1356 ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1357 if (!ab8500->oldmask) {
1362 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1363 * 0x01 Swoff bit programming
1364 * 0x02 Thermal protection activation
1365 * 0x04 Vbat lower then BattOk falling threshold
1366 * 0x08 Watchdog expired
1367 * 0x10 Non presence of 32kHz clock
1368 * 0x20 Battery level lower than power on reset threshold
1369 * 0x40 Power on key 1 pressed longer than 10 seconds
1370 * 0x80 DB8500 thermal shutdown
1373 ret = get_register_interruptible(ab8500, AB8500_RTC,
1374 AB8500_SWITCH_OFF_STATUS, &value);
1377 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1380 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1382 printk(KERN_CONT " \"%s\"",
1383 switch_off_status[i]);
1387 printk(KERN_CONT "\n");
1389 printk(KERN_CONT " None\n");
1392 if (plat && plat->init)
1395 /* Clear and mask all interrupts */
1396 for (i = 0; i < ab8500->mask_size; i++) {
1398 * Interrupt register 12 doesn't exist prior to AB8500 version
1401 if (ab8500->irq_reg_offset[i] == 11 &&
1402 is_ab8500_1p1_or_earlier(ab8500))
1405 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1406 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1408 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1409 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1412 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1414 goto out_freeoldmask;
1416 for (i = 0; i < ab8500->mask_size; i++)
1417 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1419 ret = ab8500_irq_init(ab8500, np);
1421 goto out_freeoldmask;
1423 /* Activate this feature only in ab9540 */
1424 /* till tests are done on ab8500 1p2 or later*/
1425 if (is_ab9540(ab8500)) {
1426 ret = request_threaded_irq(ab8500->irq, NULL,
1427 ab8500_hierarchical_irq,
1428 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1432 ret = request_threaded_irq(ab8500->irq, NULL,
1434 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1437 goto out_freeoldmask;
1440 ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
1441 ARRAY_SIZE(abx500_common_devs), NULL,
1442 ab8500->irq_base, ab8500->domain);
1446 if (is_ab9540(ab8500))
1447 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1448 ARRAY_SIZE(ab9540_devs), NULL,
1449 ab8500->irq_base, ab8500->domain);
1451 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1452 ARRAY_SIZE(ab8500_devs), NULL,
1453 ab8500->irq_base, ab8500->domain);
1457 if (is_ab9540(ab8500) || is_ab8505(ab8500))
1458 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
1459 ARRAY_SIZE(ab9540_ab8505_devs), NULL,
1460 ab8500->irq_base, ab8500->domain);
1465 /* Add battery management devices */
1466 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1467 ARRAY_SIZE(ab8500_bm_devs), NULL,
1468 ab8500->irq_base, ab8500->domain);
1470 dev_err(ab8500->dev, "error adding bm devices\n");
1473 if (is_ab9540(ab8500))
1474 ret = sysfs_create_group(&ab8500->dev->kobj,
1475 &ab9540_attr_group);
1477 ret = sysfs_create_group(&ab8500->dev->kobj,
1478 &ab8500_attr_group);
1480 dev_err(ab8500->dev, "error creating sysfs entries\n");
1485 free_irq(ab8500->irq, ab8500);
1487 kfree(ab8500->oldmask);
1489 kfree(ab8500->mask);
1496 static int ab8500_remove(struct platform_device *pdev)
1498 struct ab8500 *ab8500 = platform_get_drvdata(pdev);
1500 if (is_ab9540(ab8500))
1501 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1503 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1505 mfd_remove_devices(ab8500->dev);
1506 free_irq(ab8500->irq, ab8500);
1508 kfree(ab8500->oldmask);
1509 kfree(ab8500->mask);
1515 static const struct platform_device_id ab8500_id[] = {
1516 { "ab8500-core", AB8500_VERSION_AB8500 },
1517 { "ab8505-i2c", AB8500_VERSION_AB8505 },
1518 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1519 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1523 static struct platform_driver ab8500_core_driver = {
1525 .name = "ab8500-core",
1526 .owner = THIS_MODULE,
1528 .probe = ab8500_probe,
1529 .remove = ab8500_remove,
1530 .id_table = ab8500_id,
1533 static int __init ab8500_core_init(void)
1535 return platform_driver_register(&ab8500_core_driver);
1538 static void __exit ab8500_core_exit(void)
1540 platform_driver_unregister(&ab8500_core_driver);
1542 core_initcall(ab8500_core_init);
1543 module_exit(ab8500_core_exit);
1545 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1546 MODULE_DESCRIPTION("AB8500 MFD core");
1547 MODULE_LICENSE("GPL v2");