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>
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
97 #define AB8500_IT_MASK25_REG 0x58
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
105 #define AB8540_IT_LATCHHIER4_REG 0x63
107 #define AB8500_IT_LATCHHIER_NUM 3
108 #define AB8540_IT_LATCHHIER_NUM 4
110 #define AB8500_REV_REG 0x80
111 #define AB8500_IC_NAME_REG 0x82
112 #define AB8500_SWITCH_OFF_STATUS 0x00
114 #define AB8500_TURN_ON_STATUS 0x00
115 #define AB8505_TURN_ON_STATUS_2 0x04
117 #define AB8500_CH_USBCH_STAT1_REG 0x02
118 #define VBUS_DET_DBNC100 0x02
119 #define VBUS_DET_DBNC1 0x01
121 static DEFINE_SPINLOCK(on_stat_lock);
122 static u8 turn_on_stat_mask = 0xFF;
123 static u8 turn_on_stat_set;
124 static bool no_bm; /* No battery management */
126 * not really modular, but the easiest way to keep compat with existing
127 * bootargs behaviour is to continue using module_param here.
129 module_param(no_bm, bool, S_IRUGO);
131 #define AB9540_MODEM_CTRL2_REG 0x23
132 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
135 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
136 * numbers are indexed into this array with (num / 8). The interupts are
137 * defined in linux/mfd/ab8500.h
139 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
143 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
144 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
147 /* AB9540 / AB8505 support */
148 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
149 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23
153 static const int ab8540_irq_regoffset[AB8540_NUM_IRQ_REGS] = {
154 0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22,
155 23, 25, 26, 27, 28, 29, 30, 31,
158 static const char ab8500_version_str[][7] = {
159 [AB8500_VERSION_AB8500] = "AB8500",
160 [AB8500_VERSION_AB8505] = "AB8505",
161 [AB8500_VERSION_AB9540] = "AB9540",
162 [AB8500_VERSION_AB8540] = "AB8540",
165 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
169 ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
171 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
175 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
180 ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
183 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
187 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
192 ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
194 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
200 static int ab8500_get_chip_id(struct device *dev)
202 struct ab8500 *ab8500;
206 ab8500 = dev_get_drvdata(dev->parent);
207 return ab8500 ? (int)ab8500->chip_id : -EINVAL;
210 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
215 * Put the u8 bank and u8 register together into a an u16.
216 * The bank on higher 8 bits and register in lower 8 bits.
218 u16 addr = ((u16)bank) << 8 | reg;
220 dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
222 mutex_lock(&ab8500->lock);
224 ret = ab8500->write(ab8500, addr, data);
226 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
228 mutex_unlock(&ab8500->lock);
233 static int ab8500_set_register(struct device *dev, u8 bank,
237 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
239 atomic_inc(&ab8500->transfer_ongoing);
240 ret = set_register_interruptible(ab8500, bank, reg, value);
241 atomic_dec(&ab8500->transfer_ongoing);
245 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
249 u16 addr = ((u16)bank) << 8 | reg;
251 mutex_lock(&ab8500->lock);
253 ret = ab8500->read(ab8500, addr);
255 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
260 mutex_unlock(&ab8500->lock);
261 dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
263 return (ret < 0) ? ret : 0;
266 static int ab8500_get_register(struct device *dev, u8 bank,
270 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
272 atomic_inc(&ab8500->transfer_ongoing);
273 ret = get_register_interruptible(ab8500, bank, reg, value);
274 atomic_dec(&ab8500->transfer_ongoing);
278 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
279 u8 reg, u8 bitmask, u8 bitvalues)
282 u16 addr = ((u16)bank) << 8 | reg;
284 mutex_lock(&ab8500->lock);
286 if (ab8500->write_masked == NULL) {
289 ret = ab8500->read(ab8500, addr);
291 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
297 data = (~bitmask & data) | (bitmask & bitvalues);
299 ret = ab8500->write(ab8500, addr, data);
301 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
304 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
308 ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
310 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
313 mutex_unlock(&ab8500->lock);
317 static int ab8500_mask_and_set_register(struct device *dev,
318 u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
321 struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
323 atomic_inc(&ab8500->transfer_ongoing);
324 ret = mask_and_set_register_interruptible(ab8500, bank, reg,
326 atomic_dec(&ab8500->transfer_ongoing);
330 static struct abx500_ops ab8500_ops = {
331 .get_chip_id = ab8500_get_chip_id,
332 .get_register = ab8500_get_register,
333 .set_register = ab8500_set_register,
334 .get_register_page = NULL,
335 .set_register_page = NULL,
336 .mask_and_set_register = ab8500_mask_and_set_register,
337 .event_registers_startup_state_get = NULL,
338 .startup_irq_enabled = NULL,
339 .dump_all_banks = ab8500_dump_all_banks,
342 static void ab8500_irq_lock(struct irq_data *data)
344 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
346 mutex_lock(&ab8500->irq_lock);
347 atomic_inc(&ab8500->transfer_ongoing);
350 static void ab8500_irq_sync_unlock(struct irq_data *data)
352 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
355 for (i = 0; i < ab8500->mask_size; i++) {
356 u8 old = ab8500->oldmask[i];
357 u8 new = ab8500->mask[i];
364 * Interrupt register 12 doesn't exist prior to AB8500 version
367 if (ab8500->irq_reg_offset[i] == 11 &&
368 is_ab8500_1p1_or_earlier(ab8500))
371 if (ab8500->irq_reg_offset[i] < 0)
374 ab8500->oldmask[i] = new;
376 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
377 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
379 atomic_dec(&ab8500->transfer_ongoing);
380 mutex_unlock(&ab8500->irq_lock);
383 static void ab8500_irq_mask(struct irq_data *data)
385 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
386 int offset = data->hwirq;
387 int index = offset / 8;
388 int mask = 1 << (offset % 8);
390 ab8500->mask[index] |= mask;
392 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
393 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
394 ab8500->mask[index + 2] |= mask;
395 if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
396 ab8500->mask[index + 1] |= mask;
397 if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
398 /* Here the falling IRQ is one bit lower */
399 ab8500->mask[index] |= (mask << 1);
402 static void ab8500_irq_unmask(struct irq_data *data)
404 struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
405 unsigned int type = irqd_get_trigger_type(data);
406 int offset = data->hwirq;
407 int index = offset / 8;
408 int mask = 1 << (offset % 8);
410 if (type & IRQ_TYPE_EDGE_RISING)
411 ab8500->mask[index] &= ~mask;
413 /* The AB8500 GPIOs have two interrupts each (rising & falling). */
414 if (type & IRQ_TYPE_EDGE_FALLING) {
415 if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
416 ab8500->mask[index + 2] &= ~mask;
417 else if (offset >= AB9540_INT_GPIO50R &&
418 offset <= AB9540_INT_GPIO54R)
419 ab8500->mask[index + 1] &= ~mask;
420 else if (offset == AB8540_INT_GPIO43R ||
421 offset == AB8540_INT_GPIO44R)
422 /* Here the falling IRQ is one bit lower */
423 ab8500->mask[index] &= ~(mask << 1);
425 ab8500->mask[index] &= ~mask;
427 /* Satisfies the case where type is not set. */
428 ab8500->mask[index] &= ~mask;
432 static int ab8500_irq_set_type(struct irq_data *data, unsigned int type)
437 static struct irq_chip ab8500_irq_chip = {
439 .irq_bus_lock = ab8500_irq_lock,
440 .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
441 .irq_mask = ab8500_irq_mask,
442 .irq_disable = ab8500_irq_mask,
443 .irq_unmask = ab8500_irq_unmask,
444 .irq_set_type = ab8500_irq_set_type,
447 static void update_latch_offset(u8 *offset, int i)
449 /* Fix inconsistent ITFromLatch25 bit mapping... */
450 if (unlikely(*offset == 17))
452 /* Fix inconsistent ab8540 bit mapping... */
453 if (unlikely(*offset == 16))
455 if ((i == 3) && (*offset >= 24))
459 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
460 int latch_offset, u8 latch_val)
462 int int_bit, line, i;
464 for (i = 0; i < ab8500->mask_size; i++)
465 if (ab8500->irq_reg_offset[i] == latch_offset)
468 if (i >= ab8500->mask_size) {
469 dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
474 /* ignore masked out interrupts */
475 latch_val &= ~ab8500->mask[i];
478 int_bit = __ffs(latch_val);
479 line = (i << 3) + int_bit;
480 latch_val &= ~(1 << int_bit);
483 * This handles the falling edge hwirqs from the GPIO
484 * lines. Route them back to the line registered for the
485 * rising IRQ, as this is merely a flag for the same IRQ
488 if (line >= AB8500_INT_GPIO6F && line <= AB8500_INT_GPIO41F)
490 if (line >= AB9540_INT_GPIO50F && line <= AB9540_INT_GPIO54F)
492 if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F)
495 handle_nested_irq(irq_create_mapping(ab8500->domain, line));
501 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
502 int hier_offset, u8 hier_val)
504 int latch_bit, status;
505 u8 latch_offset, latch_val;
508 latch_bit = __ffs(hier_val);
509 latch_offset = (hier_offset << 3) + latch_bit;
511 update_latch_offset(&latch_offset, hier_offset);
513 status = get_register_interruptible(ab8500,
515 AB8500_IT_LATCH1_REG + latch_offset,
517 if (status < 0 || latch_val == 0)
520 status = ab8500_handle_hierarchical_line(ab8500,
521 latch_offset, latch_val);
525 hier_val &= ~(1 << latch_bit);
531 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
533 struct ab8500 *ab8500 = dev;
536 dev_vdbg(ab8500->dev, "interrupt\n");
538 /* Hierarchical interrupt version */
539 for (i = 0; i < (ab8500->it_latchhier_num); i++) {
543 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
544 AB8500_IT_LATCHHIER1_REG + i, &hier_val);
545 if (status < 0 || hier_val == 0)
548 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
555 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
556 irq_hw_number_t hwirq)
558 struct ab8500 *ab8500 = d->host_data;
563 irq_set_chip_data(virq, ab8500);
564 irq_set_chip_and_handler(virq, &ab8500_irq_chip,
566 irq_set_nested_thread(virq, 1);
567 irq_set_noprobe(virq);
572 static const struct irq_domain_ops ab8500_irq_ops = {
573 .map = ab8500_irq_map,
574 .xlate = irq_domain_xlate_twocell,
577 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
581 if (is_ab8540(ab8500))
582 num_irqs = AB8540_NR_IRQS;
583 else if (is_ab9540(ab8500))
584 num_irqs = AB9540_NR_IRQS;
585 else if (is_ab8505(ab8500))
586 num_irqs = AB8505_NR_IRQS;
588 num_irqs = AB8500_NR_IRQS;
590 /* If ->irq_base is zero this will give a linear mapping */
591 ab8500->domain = irq_domain_add_simple(ab8500->dev->of_node,
593 &ab8500_irq_ops, ab8500);
595 if (!ab8500->domain) {
596 dev_err(ab8500->dev, "Failed to create irqdomain\n");
603 int ab8500_suspend(struct ab8500 *ab8500)
605 if (atomic_read(&ab8500->transfer_ongoing))
611 static const struct mfd_cell ab8500_bm_devs[] = {
612 MFD_CELL_OF("ab8500-charger", NULL, &ab8500_bm_data,
613 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-charger"),
614 MFD_CELL_OF("ab8500-btemp", NULL, &ab8500_bm_data,
615 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-btemp"),
616 MFD_CELL_OF("ab8500-fg", NULL, &ab8500_bm_data,
617 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-fg"),
618 MFD_CELL_OF("ab8500-chargalg", NULL, &ab8500_bm_data,
619 sizeof(ab8500_bm_data), 0, "stericsson,ab8500-chargalg"),
622 static const struct mfd_cell ab8500_devs[] = {
623 #ifdef CONFIG_DEBUG_FS
624 MFD_CELL_OF("ab8500-debug",
625 NULL, NULL, 0, 0, "stericsson,ab8500-debug"),
627 MFD_CELL_OF("ab8500-sysctrl",
628 NULL, NULL, 0, 0, "stericsson,ab8500-sysctrl"),
629 MFD_CELL_OF("ab8500-ext-regulator",
630 NULL, NULL, 0, 0, "stericsson,ab8500-ext-regulator"),
631 MFD_CELL_OF("ab8500-regulator",
632 NULL, NULL, 0, 0, "stericsson,ab8500-regulator"),
633 MFD_CELL_OF("ab8500-clk",
634 NULL, NULL, 0, 0, "stericsson,ab8500-clk"),
635 MFD_CELL_OF("ab8500-gpadc",
636 NULL, NULL, 0, 0, "stericsson,ab8500-gpadc"),
637 MFD_CELL_OF("ab8500-rtc",
638 NULL, NULL, 0, 0, "stericsson,ab8500-rtc"),
639 MFD_CELL_OF("ab8500-acc-det",
640 NULL, NULL, 0, 0, "stericsson,ab8500-acc-det"),
641 MFD_CELL_OF("ab8500-poweron-key",
642 NULL, NULL, 0, 0, "stericsson,ab8500-poweron-key"),
643 MFD_CELL_OF("ab8500-pwm",
644 NULL, NULL, 0, 1, "stericsson,ab8500-pwm"),
645 MFD_CELL_OF("ab8500-pwm",
646 NULL, NULL, 0, 2, "stericsson,ab8500-pwm"),
647 MFD_CELL_OF("ab8500-pwm",
648 NULL, NULL, 0, 3, "stericsson,ab8500-pwm"),
649 MFD_CELL_OF("ab8500-denc",
650 NULL, NULL, 0, 0, "stericsson,ab8500-denc"),
651 MFD_CELL_OF("pinctrl-ab8500",
652 NULL, NULL, 0, 0, "stericsson,ab8500-gpio"),
653 MFD_CELL_OF("abx500-temp",
654 NULL, NULL, 0, 0, "stericsson,abx500-temp"),
655 MFD_CELL_OF("ab8500-usb",
656 NULL, NULL, 0, 0, "stericsson,ab8500-usb"),
657 MFD_CELL_OF("ab8500-codec",
658 NULL, NULL, 0, 0, "stericsson,ab8500-codec"),
661 static const struct mfd_cell ab9540_devs[] = {
662 #ifdef CONFIG_DEBUG_FS
664 .name = "ab8500-debug",
668 .name = "ab8500-sysctrl",
671 .name = "ab8500-ext-regulator",
674 .name = "ab8500-regulator",
677 .name = "abx500-clk",
678 .of_compatible = "stericsson,abx500-clk",
681 .name = "ab8500-gpadc",
682 .of_compatible = "stericsson,ab8500-gpadc",
685 .name = "ab8500-rtc",
688 .name = "ab8500-acc-det",
691 .name = "ab8500-poweron-key",
694 .name = "ab8500-pwm",
698 .name = "abx500-temp",
701 .name = "pinctrl-ab9540",
702 .of_compatible = "stericsson,ab9540-gpio",
705 .name = "ab9540-usb",
708 .name = "ab9540-codec",
715 /* Device list for ab8505 */
716 static const struct mfd_cell ab8505_devs[] = {
717 #ifdef CONFIG_DEBUG_FS
719 .name = "ab8500-debug",
720 .of_compatible = "stericsson,ab8500-debug",
724 .name = "ab8500-sysctrl",
725 .of_compatible = "stericsson,ab8500-sysctrl",
728 .name = "ab8500-regulator",
729 .of_compatible = "stericsson,ab8505-regulator",
732 .name = "abx500-clk",
733 .of_compatible = "stericsson,ab8500-clk",
736 .name = "ab8500-gpadc",
737 .of_compatible = "stericsson,ab8500-gpadc",
740 .name = "ab8500-rtc",
741 .of_compatible = "stericsson,ab8500-rtc",
744 .name = "ab8500-acc-det",
745 .of_compatible = "stericsson,ab8500-acc-det",
748 .name = "ab8500-poweron-key",
749 .of_compatible = "stericsson,ab8500-poweron-key",
752 .name = "ab8500-pwm",
753 .of_compatible = "stericsson,ab8500-pwm",
757 .name = "pinctrl-ab8505",
758 .of_compatible = "stericsson,ab8505-gpio",
761 .name = "ab8500-usb",
762 .of_compatible = "stericsson,ab8500-usb",
765 .name = "ab8500-codec",
766 .of_compatible = "stericsson,ab8500-codec",
773 static const struct mfd_cell ab8540_devs[] = {
774 #ifdef CONFIG_DEBUG_FS
776 .name = "ab8500-debug",
780 .name = "ab8500-sysctrl",
783 .name = "ab8500-ext-regulator",
786 .name = "ab8500-regulator",
789 .name = "abx500-clk",
790 .of_compatible = "stericsson,abx500-clk",
793 .name = "ab8500-gpadc",
794 .of_compatible = "stericsson,ab8500-gpadc",
797 .name = "ab8500-acc-det",
800 .name = "ab8500-poweron-key",
803 .name = "ab8500-pwm",
807 .name = "abx500-temp",
810 .name = "pinctrl-ab8540",
813 .name = "ab8540-usb",
816 .name = "ab8540-codec",
823 static const struct mfd_cell ab8540_cut1_devs[] = {
825 .name = "ab8500-rtc",
826 .of_compatible = "stericsson,ab8500-rtc",
830 static const struct mfd_cell ab8540_cut2_devs[] = {
832 .name = "ab8540-rtc",
833 .of_compatible = "stericsson,ab8540-rtc",
837 static ssize_t show_chip_id(struct device *dev,
838 struct device_attribute *attr, char *buf)
840 struct ab8500 *ab8500;
842 ab8500 = dev_get_drvdata(dev);
844 return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
848 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
849 * 0x01 Swoff bit programming
850 * 0x02 Thermal protection activation
851 * 0x04 Vbat lower then BattOk falling threshold
852 * 0x08 Watchdog expired
853 * 0x10 Non presence of 32kHz clock
854 * 0x20 Battery level lower than power on reset threshold
855 * 0x40 Power on key 1 pressed longer than 10 seconds
856 * 0x80 DB8500 thermal shutdown
858 static ssize_t show_switch_off_status(struct device *dev,
859 struct device_attribute *attr, char *buf)
863 struct ab8500 *ab8500;
865 ab8500 = dev_get_drvdata(dev);
866 ret = get_register_interruptible(ab8500, AB8500_RTC,
867 AB8500_SWITCH_OFF_STATUS, &value);
870 return sprintf(buf, "%#x\n", value);
873 /* use mask and set to override the register turn_on_stat value */
874 void ab8500_override_turn_on_stat(u8 mask, u8 set)
876 spin_lock(&on_stat_lock);
877 turn_on_stat_mask = mask;
878 turn_on_stat_set = set;
879 spin_unlock(&on_stat_lock);
883 * ab8500 has turned on due to (TURN_ON_STATUS):
893 static ssize_t show_turn_on_status(struct device *dev,
894 struct device_attribute *attr, char *buf)
898 struct ab8500 *ab8500;
900 ab8500 = dev_get_drvdata(dev);
901 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
902 AB8500_TURN_ON_STATUS, &value);
907 * In L9540, turn_on_status register is not updated correctly if
908 * the device is rebooted with AC/USB charger connected. Due to
909 * this, the device boots android instead of entering into charge
910 * only mode. Read the AC/USB status register to detect the charger
911 * presence and update the turn on status manually.
913 if (is_ab9540(ab8500)) {
914 spin_lock(&on_stat_lock);
915 value = (value & turn_on_stat_mask) | turn_on_stat_set;
916 spin_unlock(&on_stat_lock);
919 return sprintf(buf, "%#x\n", value);
922 static ssize_t show_turn_on_status_2(struct device *dev,
923 struct device_attribute *attr, char *buf)
927 struct ab8500 *ab8500;
929 ab8500 = dev_get_drvdata(dev);
930 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
931 AB8505_TURN_ON_STATUS_2, &value);
934 return sprintf(buf, "%#x\n", (value & 0x1));
937 static ssize_t show_ab9540_dbbrstn(struct device *dev,
938 struct device_attribute *attr, char *buf)
940 struct ab8500 *ab8500;
944 ab8500 = dev_get_drvdata(dev);
946 ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
947 AB9540_MODEM_CTRL2_REG, &value);
951 return sprintf(buf, "%d\n",
952 (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
955 static ssize_t store_ab9540_dbbrstn(struct device *dev,
956 struct device_attribute *attr, const char *buf, size_t count)
958 struct ab8500 *ab8500;
963 ab8500 = dev_get_drvdata(dev);
971 bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
977 err = mask_and_set_register_interruptible(ab8500,
978 AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
979 AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
981 dev_info(ab8500->dev,
982 "Failed to set DBBRSTN %c, err %#x\n",
990 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
991 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
992 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
993 static DEVICE_ATTR(turn_on_status_2, S_IRUGO, show_turn_on_status_2, NULL);
994 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
995 show_ab9540_dbbrstn, store_ab9540_dbbrstn);
997 static struct attribute *ab8500_sysfs_entries[] = {
998 &dev_attr_chip_id.attr,
999 &dev_attr_switch_off_status.attr,
1000 &dev_attr_turn_on_status.attr,
1004 static struct attribute *ab8505_sysfs_entries[] = {
1005 &dev_attr_turn_on_status_2.attr,
1009 static struct attribute *ab9540_sysfs_entries[] = {
1010 &dev_attr_chip_id.attr,
1011 &dev_attr_switch_off_status.attr,
1012 &dev_attr_turn_on_status.attr,
1013 &dev_attr_dbbrstn.attr,
1017 static const struct attribute_group ab8500_attr_group = {
1018 .attrs = ab8500_sysfs_entries,
1021 static const struct attribute_group ab8505_attr_group = {
1022 .attrs = ab8505_sysfs_entries,
1025 static const struct attribute_group ab9540_attr_group = {
1026 .attrs = ab9540_sysfs_entries,
1029 static int ab8500_probe(struct platform_device *pdev)
1031 static const char * const switch_off_status[] = {
1032 "Swoff bit programming",
1033 "Thermal protection activation",
1034 "Vbat lower then BattOk falling threshold",
1036 "Non presence of 32kHz clock",
1037 "Battery level lower than power on reset threshold",
1038 "Power on key 1 pressed longer than 10 seconds",
1039 "DB8500 thermal shutdown"};
1040 static const char * const turn_on_status[] = {
1041 "Battery rising (Vbat)",
1042 "Power On Key 1 dbF",
1043 "Power On Key 2 dbF",
1045 "Main Charger Detect",
1046 "Vbus Detect (USB)",
1048 "UART Factory Mode Detect"};
1049 const struct platform_device_id *platid = platform_get_device_id(pdev);
1050 enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1051 struct device_node *np = pdev->dev.of_node;
1052 struct ab8500 *ab8500;
1053 struct resource *resource;
1058 ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
1062 ab8500->dev = &pdev->dev;
1064 resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1066 dev_err(&pdev->dev, "no IRQ resource\n");
1070 ab8500->irq = resource->start;
1072 ab8500->read = ab8500_prcmu_read;
1073 ab8500->write = ab8500_prcmu_write;
1074 ab8500->write_masked = ab8500_prcmu_write_masked;
1076 mutex_init(&ab8500->lock);
1077 mutex_init(&ab8500->irq_lock);
1078 atomic_set(&ab8500->transfer_ongoing, 0);
1080 platform_set_drvdata(pdev, ab8500);
1083 version = platid->driver_data;
1085 if (version != AB8500_VERSION_UNDEFINED)
1086 ab8500->version = version;
1088 ret = get_register_interruptible(ab8500, AB8500_MISC,
1089 AB8500_IC_NAME_REG, &value);
1091 dev_err(&pdev->dev, "could not probe HW\n");
1095 ab8500->version = value;
1098 ret = get_register_interruptible(ab8500, AB8500_MISC,
1099 AB8500_REV_REG, &value);
1103 ab8500->chip_id = value;
1105 dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1106 ab8500_version_str[ab8500->version],
1107 ab8500->chip_id >> 4,
1108 ab8500->chip_id & 0x0F);
1110 /* Configure AB8540 */
1111 if (is_ab8540(ab8500)) {
1112 ab8500->mask_size = AB8540_NUM_IRQ_REGS;
1113 ab8500->irq_reg_offset = ab8540_irq_regoffset;
1114 ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM;
1115 } /* Configure AB8500 or AB9540 IRQ */
1116 else if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1117 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1118 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1119 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1121 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1122 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1123 ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1125 ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1129 ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size,
1131 if (!ab8500->oldmask)
1135 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1136 * 0x01 Swoff bit programming
1137 * 0x02 Thermal protection activation
1138 * 0x04 Vbat lower then BattOk falling threshold
1139 * 0x08 Watchdog expired
1140 * 0x10 Non presence of 32kHz clock
1141 * 0x20 Battery level lower than power on reset threshold
1142 * 0x40 Power on key 1 pressed longer than 10 seconds
1143 * 0x80 DB8500 thermal shutdown
1146 ret = get_register_interruptible(ab8500, AB8500_RTC,
1147 AB8500_SWITCH_OFF_STATUS, &value);
1150 dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1153 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1155 pr_cont(" \"%s\"", switch_off_status[i]);
1163 ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1164 AB8500_TURN_ON_STATUS, &value);
1167 dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value);
1170 for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) {
1172 pr_cont("\"%s\" ", turn_on_status[i]);
1180 if (is_ab9540(ab8500)) {
1181 ret = get_register_interruptible(ab8500, AB8500_CHARGER,
1182 AB8500_CH_USBCH_STAT1_REG, &value);
1185 if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100))
1186 ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
1190 /* Clear and mask all interrupts */
1191 for (i = 0; i < ab8500->mask_size; i++) {
1193 * Interrupt register 12 doesn't exist prior to AB8500 version
1196 if (ab8500->irq_reg_offset[i] == 11 &&
1197 is_ab8500_1p1_or_earlier(ab8500))
1200 if (ab8500->irq_reg_offset[i] < 0)
1203 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1204 AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1206 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1207 AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1210 ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1214 for (i = 0; i < ab8500->mask_size; i++)
1215 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1217 ret = ab8500_irq_init(ab8500, np);
1221 ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1222 ab8500_hierarchical_irq,
1223 IRQF_ONESHOT | IRQF_NO_SUSPEND,
1228 if (is_ab9540(ab8500))
1229 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1230 ARRAY_SIZE(ab9540_devs), NULL,
1232 else if (is_ab8540(ab8500)) {
1233 ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
1234 ARRAY_SIZE(ab8540_devs), NULL,
1239 if (is_ab8540_1p2_or_earlier(ab8500))
1240 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut1_devs,
1241 ARRAY_SIZE(ab8540_cut1_devs), NULL,
1243 else /* ab8540 >= cut2 */
1244 ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut2_devs,
1245 ARRAY_SIZE(ab8540_cut2_devs), NULL,
1247 } else if (is_ab8505(ab8500))
1248 ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
1249 ARRAY_SIZE(ab8505_devs), NULL,
1252 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1253 ARRAY_SIZE(ab8500_devs), NULL,
1259 /* Add battery management devices */
1260 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1261 ARRAY_SIZE(ab8500_bm_devs), NULL,
1264 dev_err(ab8500->dev, "error adding bm devices\n");
1267 if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1268 ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
1269 ret = sysfs_create_group(&ab8500->dev->kobj,
1270 &ab9540_attr_group);
1272 ret = sysfs_create_group(&ab8500->dev->kobj,
1273 &ab8500_attr_group);
1275 if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1276 ab8500->chip_id >= AB8500_CUT2P0)
1277 ret = sysfs_create_group(&ab8500->dev->kobj,
1278 &ab8505_attr_group);
1281 dev_err(ab8500->dev, "error creating sysfs entries\n");
1286 static const struct platform_device_id ab8500_id[] = {
1287 { "ab8500-core", AB8500_VERSION_AB8500 },
1288 { "ab8505-core", AB8500_VERSION_AB8505 },
1289 { "ab9540-i2c", AB8500_VERSION_AB9540 },
1290 { "ab8540-i2c", AB8500_VERSION_AB8540 },
1294 static struct platform_driver ab8500_core_driver = {
1296 .name = "ab8500-core",
1297 .suppress_bind_attrs = true,
1299 .probe = ab8500_probe,
1300 .id_table = ab8500_id,
1303 static int __init ab8500_core_init(void)
1305 return platform_driver_register(&ab8500_core_driver);
1307 core_initcall(ab8500_core_init);