1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) ST-Ericsson SA 2010
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/moduleparam.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
98 #define AB8500_IT_MASK25_REG 0x58
101 * latch hierarchy registers
103 #define AB8500_IT_LATCHHIER1_REG 0x60
104 #define AB8500_IT_LATCHHIER2_REG 0x61
105 #define AB8500_IT_LATCHHIER3_REG 0x62
106 #define AB8540_IT_LATCHHIER4_REG 0x63
108 #define AB8500_IT_LATCHHIER_NUM 3
109 #define AB8540_IT_LATCHHIER_NUM 4
111 #define AB8500_REV_REG 0x80
112 #define AB8500_IC_NAME_REG 0x82
113 #define AB8500_SWITCH_OFF_STATUS 0x00
115 #define AB8500_TURN_ON_STATUS 0x00
116 #define AB8505_TURN_ON_STATUS_2 0x04
118 #define AB8500_CH_USBCH_STAT1_REG 0x02
119 #define VBUS_DET_DBNC100 0x02
120 #define VBUS_DET_DBNC1 0x01
122 static DEFINE_SPINLOCK(on_stat_lock);
123 static u8 turn_on_stat_mask = 0xFF;
124 static u8 turn_on_stat_set;
125 static bool no_bm; /* No battery management */
127 * not really modular, but the easiest way to keep compat with existing
128 * bootargs behaviour is to continue using module_param here.
130 module_param(no_bm, bool, S_IRUGO);
132 #define AB9540_MODEM_CTRL2_REG 0x23
133 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
136 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
137 * numbers are indexed into this array with (num / 8). The interupts are
138 * defined in linux/mfd/ab8500.h
140 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
144 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
145 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
148 /* AB9540 / AB8505 support */
149 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
150 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23
154 static const int ab8540_irq_regoffset[AB8540_NUM_IRQ_REGS] = {
155 0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22,
156 23, 25, 26, 27, 28, 29, 30, 31,
159 static const char ab8500_version_str[][7] = {
160 [AB8500_VERSION_AB8500] = "AB8500",
161 [AB8500_VERSION_AB8505] = "AB8505",
162 [AB8500_VERSION_AB9540] = "AB9540",
163 [AB8500_VERSION_AB8540] = "AB8540",
166 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
170 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
172 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
176 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
181 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
184 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
188 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
193 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
195 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
201 static int ab8500_get_chip_id(struct device *dev)
203 struct ab8500 *ab8500;
207 ab8500 = dev_get_drvdata(dev->parent);
208 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
211 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
216 * Put the u8 bank and u8 register together into a an u16.
217 * The bank on higher 8 bits and register in lower 8 bits.
219 u16 addr = ((u16)bank) << 8 | reg;
221 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
223 mutex_lock(&ab8500->lock);
225 ret = ab8500->write(ab8500, addr, data);
227 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
229 mutex_unlock(&ab8500->lock);
234 static int ab8500_set_register(struct device *dev, u8 bank,
238 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
240 atomic_inc(&ab8500->transfer_ongoing);
241 ret = set_register_interruptible(ab8500, bank, reg, value);
242 atomic_dec(&ab8500->transfer_ongoing);
246 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
250 u16 addr = ((u16)bank) << 8 | reg;
252 mutex_lock(&ab8500->lock);
254 ret = ab8500->read(ab8500, addr);
256 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
261 mutex_unlock(&ab8500->lock);
262 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
264 return (ret < 0) ? ret : 0;
267 static int ab8500_get_register(struct device *dev, u8 bank,
271 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
273 atomic_inc(&ab8500->transfer_ongoing);
274 ret = get_register_interruptible(ab8500, bank, reg, value);
275 atomic_dec(&ab8500->transfer_ongoing);
279 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
280 u8 reg, u8 bitmask, u8 bitvalues)
283 u16 addr = ((u16)bank) << 8 | reg;
285 mutex_lock(&ab8500->lock);
287 if (ab8500->write_masked == NULL) {
290 ret = ab8500->read(ab8500, addr);
292 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
298 data = (~bitmask & data) | (bitmask & bitvalues);
300 ret = ab8500->write(ab8500, addr, data);
302 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
305 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
309 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
311 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
314 mutex_unlock(&ab8500->lock);
318 static int ab8500_mask_and_set_register(struct device *dev,
319 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
322 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
324 atomic_inc(&ab8500->transfer_ongoing);
325 ret = mask_and_set_register_interruptible(ab8500, bank, reg,
327 atomic_dec(&ab8500->transfer_ongoing);
331 static struct abx500_ops ab8500_ops = {
332 .get_chip_id = ab8500_get_chip_id,
333 .get_register = ab8500_get_register,
334 .set_register = ab8500_set_register,
335 .get_register_page = NULL,
336 .set_register_page = NULL,
337 .mask_and_set_register = ab8500_mask_and_set_register,
338 .event_registers_startup_state_get = NULL,
339 .startup_irq_enabled = NULL,
340 .dump_all_banks = ab8500_dump_all_banks,
343 static void ab8500_irq_lock(struct irq_data *data)
345 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
347 mutex_lock(&ab8500->irq_lock);
348 atomic_inc(&ab8500->transfer_ongoing);
351 static void ab8500_irq_sync_unlock(struct irq_data *data)
353 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
356 for (i = 0; i < ab8500->mask_size; i++) {
357 u8 old = ab8500->oldmask[i];
358 u8 new = ab8500->mask[i];
365 * Interrupt register 12 doesn't exist prior to AB8500 version
368 if (ab8500->irq_reg_offset[i] == 11 &&
369 is_ab8500_1p1_or_earlier(ab8500))
372 if (ab8500->irq_reg_offset[i] < 0)
375 ab8500->oldmask[i] = new;
377 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
378 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
380 atomic_dec(&ab8500->transfer_ongoing);
381 mutex_unlock(&ab8500->irq_lock);
384 static void ab8500_irq_mask(struct irq_data *data)
386 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
387 int offset = data->hwirq;
388 int index = offset / 8;
389 int mask = 1 << (offset % 8);
391 ab8500->mask[index] |= mask;
393 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
394 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
395 ab8500->mask[index + 2] |= mask;
396 if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
397 ab8500->mask[index + 1] |= mask;
398 if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
399 /* Here the falling IRQ is one bit lower */
400 ab8500->mask[index] |= (mask << 1);
403 static void ab8500_irq_unmask(struct irq_data *data)
405 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
406 unsigned int type = irqd_get_trigger_type(data);
407 int offset = data->hwirq;
408 int index = offset / 8;
409 int mask = 1 << (offset % 8);
411 if (type & IRQ_TYPE_EDGE_RISING)
412 ab8500->mask[index] &= ~mask;
414 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
415 if (type & IRQ_TYPE_EDGE_FALLING) {
416 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
417 ab8500->mask[index + 2] &= ~mask;
418 else if (offset >= AB9540_INT_GPIO50R &&
419 offset <= AB9540_INT_GPIO54R)
420 ab8500->mask[index + 1] &= ~mask;
421 else if (offset == AB8540_INT_GPIO43R ||
422 offset == AB8540_INT_GPIO44R)
423 /* Here the falling IRQ is one bit lower */
424 ab8500->mask[index] &= ~(mask << 1);
426 ab8500->mask[index] &= ~mask;
428 /* Satisfies the case where type is not set. */
429 ab8500->mask[index] &= ~mask;
433 static int ab8500_irq_set_type(struct irq_data *data, unsigned int type)
438 static struct irq_chip ab8500_irq_chip = {
440 .irq_bus_lock = ab8500_irq_lock,
441 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
442 .irq_mask = ab8500_irq_mask,
443 .irq_disable = ab8500_irq_mask,
444 .irq_unmask = ab8500_irq_unmask,
445 .irq_set_type = ab8500_irq_set_type,
448 static void update_latch_offset(u8 *offset, int i)
450 /* Fix inconsistent ITFromLatch25 bit mapping... */
451 if (unlikely(*offset == 17))
453 /* Fix inconsistent ab8540 bit mapping... */
454 if (unlikely(*offset == 16))
456 if ((i == 3) && (*offset >= 24))
460 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
461 int latch_offset, u8 latch_val)
463 int int_bit, line, i;
465 for (i = 0; i < ab8500->mask_size; i++)
466 if (ab8500->irq_reg_offset[i] == latch_offset)
469 if (i >= ab8500->mask_size) {
470 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
475 /* ignore masked out interrupts */
476 latch_val &= ~ab8500->mask[i];
479 int_bit = __ffs(latch_val);
480 line = (i << 3) + int_bit;
481 latch_val &= ~(1 << int_bit);
484 * This handles the falling edge hwirqs from the GPIO
485 * lines. Route them back to the line registered for the
486 * rising IRQ, as this is merely a flag for the same IRQ
489 if (line >= AB8500_INT_GPIO6F && line <= AB8500_INT_GPIO41F)
491 if (line >= AB9540_INT_GPIO50F && line <= AB9540_INT_GPIO54F)
493 if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F)
496 handle_nested_irq(irq_create_mapping(ab8500->domain, line));
502 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
503 int hier_offset, u8 hier_val)
505 int latch_bit, status;
506 u8 latch_offset, latch_val;
509 latch_bit = __ffs(hier_val);
510 latch_offset = (hier_offset << 3) + latch_bit;
512 update_latch_offset(&latch_offset, hier_offset);
514 status = get_register_interruptible(ab8500,
516 AB8500_IT_LATCH1_REG + latch_offset,
518 if (status < 0 || latch_val == 0)
521 status = ab8500_handle_hierarchical_line(ab8500,
522 latch_offset, latch_val);
526 hier_val &= ~(1 << latch_bit);
532 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
534 struct ab8500 *ab8500 = dev;
537 dev_vdbg(ab8500->dev, "interrupt\n");
539 /* Hierarchical interrupt version */
540 for (i = 0; i < (ab8500->it_latchhier_num); i++) {
544 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
545 AB8500_IT_LATCHHIER1_REG + i, &hier_val);
546 if (status < 0 || hier_val == 0)
549 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
556 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
557 irq_hw_number_t hwirq)
559 struct ab8500 *ab8500 = d->host_data;
564 irq_set_chip_data(virq, ab8500);
565 irq_set_chip_and_handler(virq, &ab8500_irq_chip,
567 irq_set_nested_thread(virq, 1);
568 irq_set_noprobe(virq);
573 static const struct irq_domain_ops ab8500_irq_ops = {
574 .map = ab8500_irq_map,
575 .xlate = irq_domain_xlate_twocell,
578 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
582 if (is_ab8540(ab8500))
583 num_irqs = AB8540_NR_IRQS;
584 else if (is_ab9540(ab8500))
585 num_irqs = AB9540_NR_IRQS;
586 else if (is_ab8505(ab8500))
587 num_irqs = AB8505_NR_IRQS;
589 num_irqs = AB8500_NR_IRQS;
591 /* If ->irq_base is zero this will give a linear mapping */
592 ab8500->domain = irq_domain_add_simple(ab8500->dev->of_node,
594 &ab8500_irq_ops, ab8500);
596 if (!ab8500->domain) {
597 dev_err(ab8500->dev, "Failed to create irqdomain\n");
604 int ab8500_suspend(struct ab8500 *ab8500)
606 if (atomic_read(&ab8500->transfer_ongoing))
612 static const struct mfd_cell ab8500_bm_devs[] = {
613 OF_MFD_CELL("ab8500-charger", NULL, &ab8500_bm_data,
614 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-charger"),
615 OF_MFD_CELL("ab8500-btemp", NULL, &ab8500_bm_data,
616 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-btemp"),
617 OF_MFD_CELL("ab8500-fg", NULL, &ab8500_bm_data,
618 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-fg"),
619 OF_MFD_CELL("ab8500-chargalg", NULL, &ab8500_bm_data,
620 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-chargalg"),
623 static const struct mfd_cell ab8500_devs[] = {
624 #ifdef CONFIG_DEBUG_FS
625 OF_MFD_CELL("ab8500-debug",
626 NULL, NULL, 0, 0, "stericsson,ab8500-debug"),
628 OF_MFD_CELL("ab8500-sysctrl",
629 NULL, NULL, 0, 0, "stericsson,ab8500-sysctrl"),
630 OF_MFD_CELL("ab8500-ext-regulator",
631 NULL, NULL, 0, 0, "stericsson,ab8500-ext-regulator"),
632 OF_MFD_CELL("ab8500-regulator",
633 NULL, NULL, 0, 0, "stericsson,ab8500-regulator"),
634 OF_MFD_CELL("abx500-clk",
635 NULL, NULL, 0, 0, "stericsson,abx500-clk"),
636 OF_MFD_CELL("ab8500-gpadc",
637 NULL, NULL, 0, 0, "stericsson,ab8500-gpadc"),
638 OF_MFD_CELL("ab8500-rtc",
639 NULL, NULL, 0, 0, "stericsson,ab8500-rtc"),
640 OF_MFD_CELL("ab8500-acc-det",
641 NULL, NULL, 0, 0, "stericsson,ab8500-acc-det"),
642 OF_MFD_CELL("ab8500-poweron-key",
643 NULL, NULL, 0, 0, "stericsson,ab8500-poweron-key"),
644 OF_MFD_CELL("ab8500-pwm",
645 NULL, NULL, 0, 1, "stericsson,ab8500-pwm"),
646 OF_MFD_CELL("ab8500-pwm",
647 NULL, NULL, 0, 2, "stericsson,ab8500-pwm"),
648 OF_MFD_CELL("ab8500-pwm",
649 NULL, NULL, 0, 3, "stericsson,ab8500-pwm"),
650 OF_MFD_CELL("ab8500-denc",
651 NULL, NULL, 0, 0, "stericsson,ab8500-denc"),
652 OF_MFD_CELL("pinctrl-ab8500",
653 NULL, NULL, 0, 0, "stericsson,ab8500-gpio"),
654 OF_MFD_CELL("abx500-temp",
655 NULL, NULL, 0, 0, "stericsson,abx500-temp"),
656 OF_MFD_CELL("ab8500-usb",
657 NULL, NULL, 0, 0, "stericsson,ab8500-usb"),
658 OF_MFD_CELL("ab8500-codec",
659 NULL, NULL, 0, 0, "stericsson,ab8500-codec"),
662 static const struct mfd_cell ab9540_devs[] = {
663 #ifdef CONFIG_DEBUG_FS
665 .name = "ab8500-debug",
669 .name = "ab8500-sysctrl",
672 .name = "ab8500-ext-regulator",
675 .name = "ab8500-regulator",
678 .name = "abx500-clk",
679 .of_compatible = "stericsson,abx500-clk",
682 .name = "ab8500-gpadc",
683 .of_compatible = "stericsson,ab8500-gpadc",
686 .name = "ab8500-rtc",
689 .name = "ab8500-acc-det",
692 .name = "ab8500-poweron-key",
695 .name = "ab8500-pwm",
699 .name = "abx500-temp",
702 .name = "pinctrl-ab9540",
703 .of_compatible = "stericsson,ab9540-gpio",
706 .name = "ab9540-usb",
709 .name = "ab9540-codec",
716 /* Device list for ab8505 */
717 static const struct mfd_cell ab8505_devs[] = {
718 #ifdef CONFIG_DEBUG_FS
720 .name = "ab8500-debug",
724 .name = "ab8500-sysctrl",
727 .name = "ab8500-regulator",
730 .name = "abx500-clk",
731 .of_compatible = "stericsson,abx500-clk",
734 .name = "ab8500-gpadc",
735 .of_compatible = "stericsson,ab8500-gpadc",
738 .name = "ab8500-rtc",
741 .name = "ab8500-acc-det",
744 .name = "ab8500-poweron-key",
747 .name = "ab8500-pwm",
751 .name = "pinctrl-ab8505",
754 .name = "ab8500-usb",
757 .name = "ab8500-codec",
764 static const struct mfd_cell ab8540_devs[] = {
765 #ifdef CONFIG_DEBUG_FS
767 .name = "ab8500-debug",
771 .name = "ab8500-sysctrl",
774 .name = "ab8500-ext-regulator",
777 .name = "ab8500-regulator",
780 .name = "abx500-clk",
781 .of_compatible = "stericsson,abx500-clk",
784 .name = "ab8500-gpadc",
785 .of_compatible = "stericsson,ab8500-gpadc",
788 .name = "ab8500-acc-det",
791 .name = "ab8500-poweron-key",
794 .name = "ab8500-pwm",
798 .name = "abx500-temp",
801 .name = "pinctrl-ab8540",
804 .name = "ab8540-usb",
807 .name = "ab8540-codec",
814 static const struct mfd_cell ab8540_cut1_devs[] = {
816 .name = "ab8500-rtc",
817 .of_compatible = "stericsson,ab8500-rtc",
821 static const struct mfd_cell ab8540_cut2_devs[] = {
823 .name = "ab8540-rtc",
824 .of_compatible = "stericsson,ab8540-rtc",
828 static ssize_t show_chip_id(struct device *dev,
829 struct device_attribute *attr, char *buf)
831 struct ab8500 *ab8500;
833 ab8500 = dev_get_drvdata(dev);
835 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
839 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
840 * 0x01 Swoff bit programming
841 * 0x02 Thermal protection activation
842 * 0x04 Vbat lower then BattOk falling threshold
843 * 0x08 Watchdog expired
844 * 0x10 Non presence of 32kHz clock
845 * 0x20 Battery level lower than power on reset threshold
846 * 0x40 Power on key 1 pressed longer than 10 seconds
847 * 0x80 DB8500 thermal shutdown
849 static ssize_t show_switch_off_status(struct device *dev,
850 struct device_attribute *attr, char *buf)
854 struct ab8500 *ab8500;
856 ab8500 = dev_get_drvdata(dev);
857 ret = get_register_interruptible(ab8500, AB8500_RTC,
858 AB8500_SWITCH_OFF_STATUS, &value);
861 return sprintf(buf, "%#x\n", value);
864 /* use mask and set to override the register turn_on_stat value */
865 void ab8500_override_turn_on_stat(u8 mask, u8 set)
867 spin_lock(&on_stat_lock);
868 turn_on_stat_mask = mask;
869 turn_on_stat_set = set;
870 spin_unlock(&on_stat_lock);
874 * ab8500 has turned on due to (TURN_ON_STATUS):
884 static ssize_t show_turn_on_status(struct device *dev,
885 struct device_attribute *attr, char *buf)
889 struct ab8500 *ab8500;
891 ab8500 = dev_get_drvdata(dev);
892 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
893 AB8500_TURN_ON_STATUS, &value);
898 * In L9540, turn_on_status register is not updated correctly if
899 * the device is rebooted with AC/USB charger connected. Due to
900 * this, the device boots android instead of entering into charge
901 * only mode. Read the AC/USB status register to detect the charger
902 * presence and update the turn on status manually.
904 if (is_ab9540(ab8500)) {
905 spin_lock(&on_stat_lock);
906 value = (value & turn_on_stat_mask) | turn_on_stat_set;
907 spin_unlock(&on_stat_lock);
910 return sprintf(buf, "%#x\n", value);
913 static ssize_t show_turn_on_status_2(struct device *dev,
914 struct device_attribute *attr, char *buf)
918 struct ab8500 *ab8500;
920 ab8500 = dev_get_drvdata(dev);
921 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
922 AB8505_TURN_ON_STATUS_2, &value);
925 return sprintf(buf, "%#x\n", (value & 0x1));
928 static ssize_t show_ab9540_dbbrstn(struct device *dev,
929 struct device_attribute *attr, char *buf)
931 struct ab8500 *ab8500;
935 ab8500 = dev_get_drvdata(dev);
937 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
938 AB9540_MODEM_CTRL2_REG, &value);
942 return sprintf(buf, "%d\n",
943 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
946 static ssize_t store_ab9540_dbbrstn(struct device *dev,
947 struct device_attribute *attr, const char *buf, size_t count)
949 struct ab8500 *ab8500;
954 ab8500 = dev_get_drvdata(dev);
962 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
968 err = mask_and_set_register_interruptible(ab8500,
969 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
970 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
972 dev_info(ab8500->dev,
973 "Failed to set DBBRSTN %c, err %#x\n",
981 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
982 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
983 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
984 static DEVICE_ATTR(turn_on_status_2, S_IRUGO, show_turn_on_status_2, NULL);
985 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
986 show_ab9540_dbbrstn, store_ab9540_dbbrstn);
988 static struct attribute *ab8500_sysfs_entries[] = {
989 &dev_attr_chip_id.attr,
990 &dev_attr_switch_off_status.attr,
991 &dev_attr_turn_on_status.attr,
995 static struct attribute *ab8505_sysfs_entries[] = {
996 &dev_attr_turn_on_status_2.attr,
1000 static struct attribute *ab9540_sysfs_entries[] = {
1001 &dev_attr_chip_id.attr,
1002 &dev_attr_switch_off_status.attr,
1003 &dev_attr_turn_on_status.attr,
1004 &dev_attr_dbbrstn.attr,
1008 static const struct attribute_group ab8500_attr_group = {
1009 .attrs = ab8500_sysfs_entries,
1012 static const struct attribute_group ab8505_attr_group = {
1013 .attrs = ab8505_sysfs_entries,
1016 static const struct attribute_group ab9540_attr_group = {
1017 .attrs = ab9540_sysfs_entries,
1020 static int ab8500_probe(struct platform_device *pdev)
1022 static const char * const switch_off_status[] = {
1023 "Swoff bit programming",
1024 "Thermal protection activation",
1025 "Vbat lower then BattOk falling threshold",
1027 "Non presence of 32kHz clock",
1028 "Battery level lower than power on reset threshold",
1029 "Power on key 1 pressed longer than 10 seconds",
1030 "DB8500 thermal shutdown"};
1031 static const char * const turn_on_status[] = {
1032 "Battery rising (Vbat)",
1033 "Power On Key 1 dbF",
1034 "Power On Key 2 dbF",
1036 "Main Charger Detect",
1037 "Vbus Detect (USB)",
1039 "UART Factory Mode Detect"};
1040 const struct platform_device_id *platid = platform_get_device_id(pdev);
1041 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1042 struct device_node *np = pdev->dev.of_node;
1043 struct ab8500 *ab8500;
1044 struct resource *resource;
1049 ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
1053 ab8500->dev = &pdev->dev;
1055 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1057 dev_err(&pdev->dev, "no IRQ resource\n");
1061 ab8500->irq = resource->start;
1063 ab8500->read = ab8500_prcmu_read;
1064 ab8500->write = ab8500_prcmu_write;
1065 ab8500->write_masked = ab8500_prcmu_write_masked;
1067 mutex_init(&ab8500->lock);
1068 mutex_init(&ab8500->irq_lock);
1069 atomic_set(&ab8500->transfer_ongoing, 0);
1071 platform_set_drvdata(pdev, ab8500);
1074 version = platid->driver_data;
1076 if (version != AB8500_VERSION_UNDEFINED)
1077 ab8500->version = version;
1079 ret = get_register_interruptible(ab8500, AB8500_MISC,
1080 AB8500_IC_NAME_REG, &value);
1082 dev_err(&pdev->dev, "could not probe HW\n");
1086 ab8500->version = value;
1089 ret = get_register_interruptible(ab8500, AB8500_MISC,
1090 AB8500_REV_REG, &value);
1094 ab8500->chip_id = value;
1096 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1097 ab8500_version_str[ab8500->version],
1098 ab8500->chip_id >> 4,
1099 ab8500->chip_id & 0x0F);
1101 /* Configure AB8540 */
1102 if (is_ab8540(ab8500)) {
1103 ab8500->mask_size = AB8540_NUM_IRQ_REGS;
1104 ab8500->irq_reg_offset = ab8540_irq_regoffset;
1105 ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM;
1106 } /* Configure AB8500 or AB9540 IRQ */
1107 else if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1108 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1109 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1110 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1112 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1113 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1114 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1116 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1120 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1122 if (!ab8500->oldmask)
1126 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1127 * 0x01 Swoff bit programming
1128 * 0x02 Thermal protection activation
1129 * 0x04 Vbat lower then BattOk falling threshold
1130 * 0x08 Watchdog expired
1131 * 0x10 Non presence of 32kHz clock
1132 * 0x20 Battery level lower than power on reset threshold
1133 * 0x40 Power on key 1 pressed longer than 10 seconds
1134 * 0x80 DB8500 thermal shutdown
1137 ret = get_register_interruptible(ab8500, AB8500_RTC,
1138 AB8500_SWITCH_OFF_STATUS, &value);
1141 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1144 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1146 pr_cont(" \"%s\"", switch_off_status[i]);
1154 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1155 AB8500_TURN_ON_STATUS, &value);
1158 dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value);
1161 for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) {
1163 pr_cont("\"%s\" ", turn_on_status[i]);
1171 if (is_ab9540(ab8500)) {
1172 ret = get_register_interruptible(ab8500, AB8500_CHARGER,
1173 AB8500_CH_USBCH_STAT1_REG, &value);
1176 if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100))
1177 ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
1181 /* Clear and mask all interrupts */
1182 for (i = 0; i < ab8500->mask_size; i++) {
1184 * Interrupt register 12 doesn't exist prior to AB8500 version
1187 if (ab8500->irq_reg_offset[i] == 11 &&
1188 is_ab8500_1p1_or_earlier(ab8500))
1191 if (ab8500->irq_reg_offset[i] < 0)
1194 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1195 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1197 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1198 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1201 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1205 for (i = 0; i < ab8500->mask_size; i++)
1206 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1208 ret = ab8500_irq_init(ab8500, np);
1212 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1213 ab8500_hierarchical_irq,
1214 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1219 if (is_ab9540(ab8500))
1220 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1221 ARRAY_SIZE(ab9540_devs), NULL,
1223 else if (is_ab8540(ab8500)) {
1224 ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
1225 ARRAY_SIZE(ab8540_devs), NULL,
1230 if (is_ab8540_1p2_or_earlier(ab8500))
1231 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut1_devs,
1232 ARRAY_SIZE(ab8540_cut1_devs), NULL,
1234 else /* ab8540 >= cut2 */
1235 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut2_devs,
1236 ARRAY_SIZE(ab8540_cut2_devs), NULL,
1238 } else if (is_ab8505(ab8500))
1239 ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
1240 ARRAY_SIZE(ab8505_devs), NULL,
1243 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1244 ARRAY_SIZE(ab8500_devs), NULL,
1250 /* Add battery management devices */
1251 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1252 ARRAY_SIZE(ab8500_bm_devs), NULL,
1255 dev_err(ab8500->dev, "error adding bm devices\n");
1258 if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1259 ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
1260 ret = sysfs_create_group(&ab8500->dev->kobj,
1261 &ab9540_attr_group);
1263 ret = sysfs_create_group(&ab8500->dev->kobj,
1264 &ab8500_attr_group);
1266 if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1267 ab8500->chip_id >= AB8500_CUT2P0)
1268 ret = sysfs_create_group(&ab8500->dev->kobj,
1269 &ab8505_attr_group);
1272 dev_err(ab8500->dev, "error creating sysfs entries\n");
1277 static const struct platform_device_id ab8500_id[] = {
1278 { "ab8500-core", AB8500_VERSION_AB8500 },
1279 { "ab8505-i2c", AB8500_VERSION_AB8505 },
1280 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1281 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1285 static struct platform_driver ab8500_core_driver = {
1287 .name = "ab8500-core",
1288 .suppress_bind_attrs = true,
1290 .probe = ab8500_probe,
1291 .id_table = ab8500_id,
1294 static int __init ab8500_core_init(void)
1296 return platform_driver_register(&ab8500_core_driver);
1298 core_initcall(ab8500_core_init);