[thirdparty/kernel/stable.git] / drivers / irqchip / irq-bcm7120-l2.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Broadcom BCM7120 style Level 2 interrupt controller driver
 *
 * Copyright (C) 2014 Broadcom Corporation
 */

#define pr_fmt(fmt)	KBUILD_MODNAME	": " fmt

#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/irqdomain.h>
#include <linux/reboot.h>
#include <linux/bitops.h>
#include <linux/irqchip.h>
#include <linux/irqchip/chained_irq.h>

/* Register offset in the L2 interrupt controller */
#define IRQEN		0x00
#define IRQSTAT		0x04

#define MAX_WORDS	4
#define MAX_MAPPINGS	(MAX_WORDS * 2)
#define IRQS_PER_WORD	32

struct bcm7120_l1_intc_data {
	struct bcm7120_l2_intc_data *b;
	u32 irq_map_mask[MAX_WORDS];
};

struct bcm7120_l2_intc_data {
	unsigned int n_words;
	void __iomem *map_base[MAX_MAPPINGS];
	void __iomem *pair_base[MAX_WORDS];
	int en_offset[MAX_WORDS];
	int stat_offset[MAX_WORDS];
	struct irq_domain *domain;
	bool can_wake;
	u32 irq_fwd_mask[MAX_WORDS];
	struct bcm7120_l1_intc_data *l1_data;
	int num_parent_irqs;
	const __be32 *map_mask_prop;
};

static void bcm7120_l2_intc_irq_handle(struct irq_desc *desc)
{
	struct bcm7120_l1_intc_data *data = irq_desc_get_handler_data(desc);
	struct bcm7120_l2_intc_data *b = data->b;
	struct irq_chip *chip = irq_desc_get_chip(desc);
	unsigned int idx;

	chained_irq_enter(chip, desc);

	for (idx = 0; idx < b->n_words; idx++) {
		int base = idx * IRQS_PER_WORD;
		struct irq_chip_generic *gc =
			irq_get_domain_generic_chip(b->domain, base);
		unsigned long pending;
		int hwirq;

		irq_gc_lock(gc);
		pending = irq_reg_readl(gc, b->stat_offset[idx]) &
					    gc->mask_cache &
					    data->irq_map_mask[idx];
		irq_gc_unlock(gc);

		for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) {
			generic_handle_irq(irq_find_mapping(b->domain,
					   base + hwirq));
		}
	}

	chained_irq_exit(chip, desc);
}

static void bcm7120_l2_intc_suspend(struct irq_chip_generic *gc)
{
	struct bcm7120_l2_intc_data *b = gc->private;
	struct irq_chip_type *ct = gc->chip_types;

	irq_gc_lock(gc);
	if (b->can_wake)
		irq_reg_writel(gc, gc->mask_cache | gc->wake_active,
			       ct->regs.mask);
	irq_gc_unlock(gc);
}

static void bcm7120_l2_intc_resume(struct irq_chip_generic *gc)
{
	struct irq_chip_type *ct = gc->chip_types;

	/* Restore the saved mask */
	irq_gc_lock(gc);
	irq_reg_writel(gc, gc->mask_cache, ct->regs.mask);
	irq_gc_unlock(gc);
}

static int bcm7120_l2_intc_init_one(struct device_node *dn,
					struct bcm7120_l2_intc_data *data,
					int irq, u32 *valid_mask)
{
	struct bcm7120_l1_intc_data *l1_data = &data->l1_data[irq];
	int parent_irq;
	unsigned int idx;

	parent_irq = irq_of_parse_and_map(dn, irq);
	if (!parent_irq) {
		pr_err("failed to map interrupt %d\n", irq);
		return -EINVAL;
	}

	/* For multiple parent IRQs with multiple words, this looks like:
	 * <irq0_w0 irq0_w1 irq1_w0 irq1_w1 ...>
	 *
	 * We need to associate a given parent interrupt with its corresponding
	 * map_mask in order to mask the status register with it because we
	 * have the same handler being called for multiple parent interrupts.
	 *
	 * This is typically something needed on BCM7xxx (STB chips).
	 */
	for (idx = 0; idx < data->n_words; idx++) {
		if (data->map_mask_prop) {
			l1_data->irq_map_mask[idx] |=
				be32_to_cpup(data->map_mask_prop +
					     irq * data->n_words + idx);
		} else {
			l1_data->irq_map_mask[idx] = 0xffffffff;
		}
		valid_mask[idx] |= l1_data->irq_map_mask[idx];
	}

	l1_data->b = data;

	irq_set_chained_handler_and_data(parent_irq,
					 bcm7120_l2_intc_irq_handle, l1_data);
	return 0;
}

static int __init bcm7120_l2_intc_iomap_7120(struct device_node *dn,
					     struct bcm7120_l2_intc_data *data)
{
	int ret;

	data->map_base[0] = of_iomap(dn, 0);
	if (!data->map_base[0]) {
		pr_err("unable to map registers\n");
		return -ENOMEM;
	}

	data->pair_base[0] = data->map_base[0];
	data->en_offset[0] = IRQEN;
	data->stat_offset[0] = IRQSTAT;
	data->n_words = 1;

	ret = of_property_read_u32_array(dn, "brcm,int-fwd-mask",
					 data->irq_fwd_mask, data->n_words);
	if (ret != 0 && ret != -EINVAL) {
		/* property exists but has the wrong number of words */
		pr_err("invalid brcm,int-fwd-mask property\n");
		return -EINVAL;
	}

	data->map_mask_prop = of_get_property(dn, "brcm,int-map-mask", &ret);
	if (!data->map_mask_prop ||
	    (ret != (sizeof(__be32) * data->num_parent_irqs * data->n_words))) {
		pr_err("invalid brcm,int-map-mask property\n");
		return -EINVAL;
	}

	return 0;
}

static int __init bcm7120_l2_intc_iomap_3380(struct device_node *dn,
					     struct bcm7120_l2_intc_data *data)
{
	unsigned int gc_idx;

	for (gc_idx = 0; gc_idx < MAX_WORDS; gc_idx++) {
		unsigned int map_idx = gc_idx * 2;
		void __iomem *en = of_iomap(dn, map_idx + 0);
		void __iomem *stat = of_iomap(dn, map_idx + 1);
		void __iomem *base = min(en, stat);

		data->map_base[map_idx + 0] = en;
		data->map_base[map_idx + 1] = stat;

		if (!base)
			break;

		data->pair_base[gc_idx] = base;
		data->en_offset[gc_idx] = en - base;
		data->stat_offset[gc_idx] = stat - base;
	}

	if (!gc_idx) {
		pr_err("unable to map registers\n");
		return -EINVAL;
	}

	data->n_words = gc_idx;
	return 0;
}

static int __init bcm7120_l2_intc_probe(struct device_node *dn,
				 struct device_node *parent,
				 int (*iomap_regs_fn)(struct device_node *,
					struct bcm7120_l2_intc_data *),
				 const char *intc_name)
{
	unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
	struct bcm7120_l2_intc_data *data;
	struct irq_chip_generic *gc;
	struct irq_chip_type *ct;
	int ret = 0;
	unsigned int idx, irq, flags;
	u32 valid_mask[MAX_WORDS] = { };

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->num_parent_irqs = of_irq_count(dn);
	if (data->num_parent_irqs <= 0) {
		pr_err("invalid number of parent interrupts\n");
		ret = -ENOMEM;
		goto out_unmap;
	}

	data->l1_data = kcalloc(data->num_parent_irqs, sizeof(*data->l1_data),
				GFP_KERNEL);
	if (!data->l1_data) {
		ret = -ENOMEM;
		goto out_free_l1_data;
	}

	ret = iomap_regs_fn(dn, data);
	if (ret < 0)
		goto out_free_l1_data;

	for (irq = 0; irq < data->num_parent_irqs; irq++) {
		ret = bcm7120_l2_intc_init_one(dn, data, irq, valid_mask);
		if (ret)
			goto out_free_l1_data;
	}

	data->domain = irq_domain_add_linear(dn, IRQS_PER_WORD * data->n_words,
					     &irq_generic_chip_ops, NULL);
	if (!data->domain) {
		ret = -ENOMEM;
		goto out_free_l1_data;
	}

	/* MIPS chips strapped for BE will automagically configure the
	 * peripheral registers for CPU-native byte order.
	 */
	flags = IRQ_GC_INIT_MASK_CACHE;
	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
		flags |= IRQ_GC_BE_IO;

	ret = irq_alloc_domain_generic_chips(data->domain, IRQS_PER_WORD, 1,
				dn->full_name, handle_level_irq, clr, 0, flags);
	if (ret) {
		pr_err("failed to allocate generic irq chip\n");
		goto out_free_domain;
	}

	if (of_property_read_bool(dn, "brcm,irq-can-wake"))
		data->can_wake = true;

	for (idx = 0; idx < data->n_words; idx++) {
		irq = idx * IRQS_PER_WORD;
		gc = irq_get_domain_generic_chip(data->domain, irq);

		gc->unused = 0xffffffff & ~valid_mask[idx];
		gc->private = data;
		ct = gc->chip_types;

		gc->reg_base = data->pair_base[idx];
		ct->regs.mask = data->en_offset[idx];

		/* gc->reg_base is defined and so is gc->writel */
		irq_reg_writel(gc, data->irq_fwd_mask[idx],
			       data->en_offset[idx]);

		ct->chip.irq_mask = irq_gc_mask_clr_bit;
		ct->chip.irq_unmask = irq_gc_mask_set_bit;
		ct->chip.irq_ack = irq_gc_noop;
		gc->suspend = bcm7120_l2_intc_suspend;
		gc->resume = bcm7120_l2_intc_resume;

		/*
		 * Initialize mask-cache, in case we need it for
		 * saving/restoring fwd mask even w/o any child interrupts
		 * installed
		 */
		gc->mask_cache = irq_reg_readl(gc, ct->regs.mask);

		if (data->can_wake) {
			/* This IRQ chip can wake the system, set all
			 * relevant child interupts in wake_enabled mask
			 */
			gc->wake_enabled = 0xffffffff;
			gc->wake_enabled &= ~gc->unused;
			ct->chip.irq_set_wake = irq_gc_set_wake;
		}
	}

	pr_info("registered %s intc (%pOF, parent IRQ(s): %d)\n",
		intc_name, dn, data->num_parent_irqs);

	return 0;

out_free_domain:
	irq_domain_remove(data->domain);
out_free_l1_data:
	kfree(data->l1_data);
out_unmap:
	for (idx = 0; idx < MAX_MAPPINGS; idx++) {
		if (data->map_base[idx])
			iounmap(data->map_base[idx]);
	}
	kfree(data);
	return ret;
}

static int __init bcm7120_l2_intc_probe_7120(struct device_node *dn,
					     struct device_node *parent)
{
	return bcm7120_l2_intc_probe(dn, parent, bcm7120_l2_intc_iomap_7120,
				     "BCM7120 L2");
}

static int __init bcm7120_l2_intc_probe_3380(struct device_node *dn,
					     struct device_node *parent)
{
	return bcm7120_l2_intc_probe(dn, parent, bcm7120_l2_intc_iomap_3380,
				     "BCM3380 L2");
}

IRQCHIP_DECLARE(bcm7120_l2_intc, "brcm,bcm7120-l2-intc",
		bcm7120_l2_intc_probe_7120);

IRQCHIP_DECLARE(bcm3380_l2_intc, "brcm,bcm3380-l2-intc",
		bcm7120_l2_intc_probe_3380);
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
a5042de2 FF	2	/*
	3	* Broadcom BCM7120 style Level 2 interrupt controller driver
	4	*
	5	* Copyright (C) 2014 Broadcom Corporation
a5042de2 FF	6	*/
	7
	8	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	9
	10	#include <linux/init.h>
	11	#include <linux/slab.h>
	12	#include <linux/module.h>
7b7230e7	13	#include <linux/kernel.h>
a5042de2 FF	14	#include <linux/platform_device.h>
	15	#include <linux/of.h>
	16	#include <linux/of_irq.h>
	17	#include <linux/of_address.h>
	18	#include <linux/of_platform.h>
	19	#include <linux/interrupt.h>
	20	#include <linux/irq.h>
	21	#include <linux/io.h>
	22	#include <linux/irqdomain.h>
	23	#include <linux/reboot.h>
c76acf4d	24	#include <linux/bitops.h>
41a83e06	25	#include <linux/irqchip.h>
a5042de2 FF	26	#include <linux/irqchip/chained_irq.h>
a5042de2 FF	27
a5042de2 FF	28	/* Register offset in the L2 interrupt controller */
	29	#define IRQEN 0x00
	30	#define IRQSTAT 0x04
	31
c76acf4d	32	#define MAX_WORDS 4
ca40f1b2	33	#define MAX_MAPPINGS (MAX_WORDS * 2)
c76acf4d KC	34	#define IRQS_PER_WORD 32
c76acf4d KC	35
0aef3997 FF	36	struct bcm7120_l1_intc_data {
	37	struct bcm7120_l2_intc_data *b;
	38	u32 irq_map_mask[MAX_WORDS];
	39	};
	40
a5042de2	41	struct bcm7120_l2_intc_data {
c76acf4d	42	unsigned int n_words;
5b5468cf KC	43	void __iomem *map_base[MAX_MAPPINGS];
	44	void __iomem *pair_base[MAX_WORDS];
	45	int en_offset[MAX_WORDS];
	46	int stat_offset[MAX_WORDS];
a5042de2 FF	47	struct irq_domain *domain;
a5042de2 FF	48	bool can_wake;
c76acf4d	49	u32 irq_fwd_mask[MAX_WORDS];
0aef3997	50	struct bcm7120_l1_intc_data *l1_data;
ca40f1b2 KC	51	int num_parent_irqs;
ca40f1b2 KC	52	const __be32 *map_mask_prop;
a5042de2 FF	53	};
a5042de2 FF	54
bd0b9ac4	55	static void bcm7120_l2_intc_irq_handle(struct irq_desc *desc)
a5042de2	56	{
0aef3997 FF	57	struct bcm7120_l1_intc_data *data = irq_desc_get_handler_data(desc);
0aef3997 FF	58	struct bcm7120_l2_intc_data *b = data->b;
a5042de2	59	struct irq_chip *chip = irq_desc_get_chip(desc);
c76acf4d	60	unsigned int idx;
a5042de2 FF	61
	62	chained_irq_enter(chip, desc);
	63
c76acf4d KC	64	for (idx = 0; idx < b->n_words; idx++) {
	65	int base = idx * IRQS_PER_WORD;
	66	struct irq_chip_generic *gc =
	67	irq_get_domain_generic_chip(b->domain, base);
	68	unsigned long pending;
	69	int hwirq;
	70
	71	irq_gc_lock(gc);
5b5468cf	72	pending = irq_reg_readl(gc, b->stat_offset[idx]) &
0aef3997 FF	73	gc->mask_cache &
0aef3997 FF	74	data->irq_map_mask[idx];
c76acf4d KC	75	irq_gc_unlock(gc);
	76
	77	for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) {
	78	generic_handle_irq(irq_find_mapping(b->domain,
	79	base + hwirq));
	80	}
a5042de2 FF	81	}
a5042de2 FF	82
a5042de2 FF	83	chained_irq_exit(chip, desc);
	84	}
	85
fd537766	86	static void bcm7120_l2_intc_suspend(struct irq_chip_generic *gc)
a5042de2	87	{
a5042de2	88	struct bcm7120_l2_intc_data *b = gc->private;
fd537766	89	struct irq_chip_type *ct = gc->chip_types;
a5042de2 FF	90
a5042de2 FF	91	irq_gc_lock(gc);
c17261fa	92	if (b->can_wake)
5b5468cf KC	93	irq_reg_writel(gc, gc->mask_cache \| gc->wake_active,
5b5468cf KC	94	ct->regs.mask);
a5042de2 FF	95	irq_gc_unlock(gc);
	96	}
	97
fd537766	98	static void bcm7120_l2_intc_resume(struct irq_chip_generic *gc)
a5042de2	99	{
fd537766	100	struct irq_chip_type *ct = gc->chip_types;
a5042de2 FF	101
	102	/* Restore the saved mask */
	103	irq_gc_lock(gc);
5b5468cf	104	irq_reg_writel(gc, gc->mask_cache, ct->regs.mask);
a5042de2 FF	105	irq_gc_unlock(gc);
	106	}
	107
	108	static int bcm7120_l2_intc_init_one(struct device_node *dn,
	109	struct bcm7120_l2_intc_data *data,
0aef3997	110	int irq, u32 *valid_mask)
a5042de2	111	{
0aef3997	112	struct bcm7120_l1_intc_data *l1_data = &data->l1_data[irq];
a5042de2	113	int parent_irq;
c76acf4d	114	unsigned int idx;
a5042de2 FF	115
a5042de2 FF	116	parent_irq = irq_of_parse_and_map(dn, irq);
714710e1	117	if (!parent_irq) {
a5042de2	118	pr_err("failed to map interrupt %d\n", irq);
714710e1	119	return -EINVAL;
a5042de2 FF	120	}
a5042de2 FF	121
c76acf4d KC	122	/* For multiple parent IRQs with multiple words, this looks like:
c76acf4d KC	123	* <irq0_w0 irq0_w1 irq1_w0 irq1_w1 ...>
0aef3997 FF	124	*
	125	* We need to associate a given parent interrupt with its corresponding
	126	* map_mask in order to mask the status register with it because we
	127	* have the same handler being called for multiple parent interrupts.
	128	*
	129	* This is typically something needed on BCM7xxx (STB chips).
c76acf4d	130	*/
7b7230e7 KC	131	for (idx = 0; idx < data->n_words; idx++) {
7b7230e7 KC	132	if (data->map_mask_prop) {
0aef3997	133	l1_data->irq_map_mask[idx] \|=
7b7230e7 KC	134	be32_to_cpup(data->map_mask_prop +
	135	irq * data->n_words + idx);
	136	} else {
0aef3997	137	l1_data->irq_map_mask[idx] = 0xffffffff;
7b7230e7	138	}
0aef3997	139	valid_mask[idx] \|= l1_data->irq_map_mask[idx];
7b7230e7	140	}
a5042de2	141
0aef3997	142	l1_data->b = data;
a5042de2	143
0aef3997 FF	144	irq_set_chained_handler_and_data(parent_irq,
0aef3997 FF	145	bcm7120_l2_intc_irq_handle, l1_data);
a5042de2 FF	146	return 0;
	147	}
	148
ca40f1b2 KC	149	static int __init bcm7120_l2_intc_iomap_7120(struct device_node *dn,
	150	struct bcm7120_l2_intc_data *data)
	151	{
	152	int ret;
	153
	154	data->map_base[0] = of_iomap(dn, 0);
	155	if (!data->map_base[0]) {
	156	pr_err("unable to map registers\n");
	157	return -ENOMEM;
	158	}
	159
	160	data->pair_base[0] = data->map_base[0];
	161	data->en_offset[0] = IRQEN;
	162	data->stat_offset[0] = IRQSTAT;
	163	data->n_words = 1;
	164
	165	ret = of_property_read_u32_array(dn, "brcm,int-fwd-mask",
	166	data->irq_fwd_mask, data->n_words);
	167	if (ret != 0 && ret != -EINVAL) {
	168	/* property exists but has the wrong number of words */
	169	pr_err("invalid brcm,int-fwd-mask property\n");
	170	return -EINVAL;
	171	}
	172
	173	data->map_mask_prop = of_get_property(dn, "brcm,int-map-mask", &ret);
	174	if (!data->map_mask_prop \|\|
	175	(ret != (sizeof(__be32) * data->num_parent_irqs * data->n_words))) {
	176	pr_err("invalid brcm,int-map-mask property\n");
	177	return -EINVAL;
	178	}
	179
	180	return 0;
	181	}
	182
7b7230e7 KC	183	static int __init bcm7120_l2_intc_iomap_3380(struct device_node *dn,
	184	struct bcm7120_l2_intc_data *data)
	185	{
	186	unsigned int gc_idx;
	187
	188	for (gc_idx = 0; gc_idx < MAX_WORDS; gc_idx++) {
	189	unsigned int map_idx = gc_idx * 2;
	190	void __iomem *en = of_iomap(dn, map_idx + 0);
	191	void __iomem *stat = of_iomap(dn, map_idx + 1);
	192	void __iomem *base = min(en, stat);
	193
	194	data->map_base[map_idx + 0] = en;
	195	data->map_base[map_idx + 1] = stat;
	196
	197	if (!base)
	198	break;
	199
	200	data->pair_base[gc_idx] = base;
	201	data->en_offset[gc_idx] = en - base;
	202	data->stat_offset[gc_idx] = stat - base;
	203	}
	204
	205	if (!gc_idx) {
	206	pr_err("unable to map registers\n");
	207	return -EINVAL;
	208	}
	209
	210	data->n_words = gc_idx;
	211	return 0;
	212	}
	213
dde7e6d1	214	static int __init bcm7120_l2_intc_probe(struct device_node *dn,
ca40f1b2 KC	215	struct device_node *parent,
	216	int (iomap_regs_fn)(struct device_node ,
	217	struct bcm7120_l2_intc_data *),
	218	const char *intc_name)
a5042de2 FF	219	{
	220	unsigned int clr = IRQ_NOREQUEST \| IRQ_NOPROBE \| IRQ_NOAUTOEN;
	221	struct bcm7120_l2_intc_data *data;
	222	struct irq_chip_generic *gc;
	223	struct irq_chip_type *ct;
ca40f1b2	224	int ret = 0;
c17261fa	225	unsigned int idx, irq, flags;
0aef3997	226	u32 valid_mask[MAX_WORDS] = { };
a5042de2 FF	227
	228	data = kzalloc(sizeof(*data), GFP_KERNEL);
	229	if (!data)
	230	return -ENOMEM;
	231
ca40f1b2 KC	232	data->num_parent_irqs = of_irq_count(dn);
ca40f1b2 KC	233	if (data->num_parent_irqs <= 0) {
a5042de2 FF	234	pr_err("invalid number of parent interrupts\n");
	235	ret = -ENOMEM;
	236	goto out_unmap;
	237	}
	238
0aef3997 FF	239	data->l1_data = kcalloc(data->num_parent_irqs, sizeof(*data->l1_data),
	240	GFP_KERNEL);
	241	if (!data->l1_data) {
	242	ret = -ENOMEM;
	243	goto out_free_l1_data;
	244	}
	245
ca40f1b2 KC	246	ret = iomap_regs_fn(dn, data);
ca40f1b2 KC	247	if (ret < 0)
0aef3997	248	goto out_free_l1_data;
ca40f1b2	249
ca40f1b2	250	for (irq = 0; irq < data->num_parent_irqs; irq++) {
0aef3997	251	ret = bcm7120_l2_intc_init_one(dn, data, irq, valid_mask);
a5042de2	252	if (ret)
0aef3997	253	goto out_free_l1_data;
a5042de2 FF	254	}
a5042de2 FF	255
c76acf4d KC	256	data->domain = irq_domain_add_linear(dn, IRQS_PER_WORD * data->n_words,
c76acf4d KC	257	&irq_generic_chip_ops, NULL);
a5042de2 FF	258	if (!data->domain) {
a5042de2 FF	259	ret = -ENOMEM;
0aef3997	260	goto out_free_l1_data;
a5042de2 FF	261	}
a5042de2 FF	262
c17261fa KC	263	/* MIPS chips strapped for BE will automagically configure the
	264	* peripheral registers for CPU-native byte order.
	265	*/
	266	flags = IRQ_GC_INIT_MASK_CACHE;
	267	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
	268	flags \|= IRQ_GC_BE_IO;
	269
c76acf4d	270	ret = irq_alloc_domain_generic_chips(data->domain, IRQS_PER_WORD, 1,
c17261fa	271	dn->full_name, handle_level_irq, clr, 0, flags);
a5042de2 FF	272	if (ret) {
	273	pr_err("failed to allocate generic irq chip\n");
	274	goto out_free_domain;
	275	}
	276
c76acf4d	277	if (of_property_read_bool(dn, "brcm,irq-can-wake"))
a5042de2	278	data->can_wake = true;
c76acf4d KC	279
	280	for (idx = 0; idx < data->n_words; idx++) {
	281	irq = idx * IRQS_PER_WORD;
	282	gc = irq_get_domain_generic_chip(data->domain, irq);
	283
0aef3997	284	gc->unused = 0xffffffff & ~valid_mask[idx];
c76acf4d KC	285	gc->private = data;
	286	ct = gc->chip_types;
	287
5b5468cf KC	288	gc->reg_base = data->pair_base[idx];
	289	ct->regs.mask = data->en_offset[idx];
	290
b304605f FF	291	/* gc->reg_base is defined and so is gc->writel */
	292	irq_reg_writel(gc, data->irq_fwd_mask[idx],
	293	data->en_offset[idx]);
	294
c76acf4d KC	295	ct->chip.irq_mask = irq_gc_mask_clr_bit;
	296	ct->chip.irq_unmask = irq_gc_mask_set_bit;
	297	ct->chip.irq_ack = irq_gc_noop;
fd537766 BN	298	gc->suspend = bcm7120_l2_intc_suspend;
	299	gc->resume = bcm7120_l2_intc_resume;
	300
	301	/*
	302	* Initialize mask-cache, in case we need it for
	303	* saving/restoring fwd mask even w/o any child interrupts
	304	* installed
	305	*/
	306	gc->mask_cache = irq_reg_readl(gc, ct->regs.mask);
c76acf4d KC	307
	308	if (data->can_wake) {
	309	/* This IRQ chip can wake the system, set all
	310	* relevant child interupts in wake_enabled mask
	311	*/
	312	gc->wake_enabled = 0xffffffff;
	313	gc->wake_enabled &= ~gc->unused;
	314	ct->chip.irq_set_wake = irq_gc_set_wake;
	315	}
a5042de2 FF	316	}
a5042de2 FF	317
082ce27f FF	318	pr_info("registered %s intc (%pOF, parent IRQ(s): %d)\n",
	319	intc_name, dn, data->num_parent_irqs);
	320
a5042de2 FF	321	return 0;
	322
	323	out_free_domain:
	324	irq_domain_remove(data->domain);
0aef3997 FF	325	out_free_l1_data:
0aef3997 FF	326	kfree(data->l1_data);
a5042de2	327	out_unmap:
5b5468cf KC	328	for (idx = 0; idx < MAX_MAPPINGS; idx++) {
	329	if (data->map_base[idx])
	330	iounmap(data->map_base[idx]);
c76acf4d	331	}
a5042de2 FF	332	kfree(data);
	333	return ret;
	334	}
ca40f1b2	335
dde7e6d1 BD	336	static int __init bcm7120_l2_intc_probe_7120(struct device_node *dn,
dde7e6d1 BD	337	struct device_node *parent)
ca40f1b2 KC	338	{
	339	return bcm7120_l2_intc_probe(dn, parent, bcm7120_l2_intc_iomap_7120,
	340	"BCM7120 L2");
	341	}
	342
dde7e6d1 BD	343	static int __init bcm7120_l2_intc_probe_3380(struct device_node *dn,
dde7e6d1 BD	344	struct device_node *parent)
7b7230e7 KC	345	{
	346	return bcm7120_l2_intc_probe(dn, parent, bcm7120_l2_intc_iomap_3380,
	347	"BCM3380 L2");
	348	}
	349
a4fcbb86	350	IRQCHIP_DECLARE(bcm7120_l2_intc, "brcm,bcm7120-l2-intc",
ca40f1b2	351	bcm7120_l2_intc_probe_7120);
7b7230e7 KC	352
	353	IRQCHIP_DECLARE(bcm3380_l2_intc, "brcm,bcm3380-l2-intc",
	354	bcm7120_l2_intc_probe_3380);