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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-02 12:03:55 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-02 12:03:55 -0400
commita7726350e06401929eac0aa0677a5467106565fc (patch)
treee189513e5014bdfccd73a3af731a6b57733743fa /drivers/irqchip
parent4d26aa305414dbb33b3c32fb205b68004cda8ffc (diff)
parentafcf7924ecab726dab0227188783c4a40d9f0eec (diff)
Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanup from Olof Johansson: "Here is a collection of cleanup patches. Among the pieces that stand out are: - The deletion of h720x platforms - Split of at91 non-dt platforms to their own Kconfig file to keep them separate - General cleanups and refactoring of i.MX and MXS platforms - Some restructuring of clock tables for OMAP - Convertion of PMC driver for Tegra to dt-only - Some renames of sunxi -> sun4i (Allwinner A10) - ... plus a bunch of other stuff that I haven't mentioned" * tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (119 commits) ARM: i.MX: remove unused ARCH_* configs ARM i.MX53: remove platform ahci support ARM: sunxi: Rework the restart code irqchip: sunxi: Rename sunxi to sun4i irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro clocksource: sunxi: Rename sunxi to sun4i clocksource: sunxi: make use of CLKSRC_OF clocksource: sunxi: Cleanup the timer code ARM: at91: remove trailing semicolon from macros ARM: at91/setup: fix trivial typos ARM: EXYNOS: remove "config EXYNOS_DEV_DRM" ARM: EXYNOS: change the name of USB ohci header ARM: SAMSUNG: Remove unnecessary code for dma ARM: S3C24XX: Remove unused GPIO drive strength register definitions ARM: OMAP4+: PM: Restore CPU power state to ON with clockdomain force wakeup method ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2412 ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2410 ARM: S3C24XX: Removed unneeded dependency on ARCH_S3C24XX for boards ARM: SAMSUNG: Fix typo "CONFIG_SAMSUNG_DEV_RTC" ARM: S5P64X0: Fix typo "CONFIG_S5P64X0_SETUP_SDHCI" ...
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/Makefile3
-rw-r--r--drivers/irqchip/exynos-combiner.c1
-rw-r--r--drivers/irqchip/irq-gic.c36
-rw-r--r--drivers/irqchip/irq-mxs.c121
-rw-r--r--drivers/irqchip/irq-sun4i.c149
-rw-r--r--drivers/irqchip/irq-sunxi.c151
-rw-r--r--drivers/irqchip/irq-vic.c3
7 files changed, 300 insertions, 164 deletions
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 98e3b87bdf1b..d5e119ca9425 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -2,9 +2,10 @@ obj-$(CONFIG_IRQCHIP) += irqchip.o
2 2
3obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o 3obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o
4obj-$(CONFIG_ARCH_EXYNOS) += exynos-combiner.o 4obj-$(CONFIG_ARCH_EXYNOS) += exynos-combiner.o
5obj-$(CONFIG_ARCH_MXS) += irq-mxs.o
5obj-$(CONFIG_METAG) += irq-metag-ext.o 6obj-$(CONFIG_METAG) += irq-metag-ext.o
6obj-$(CONFIG_METAG_PERFCOUNTER_IRQS) += irq-metag.o 7obj-$(CONFIG_METAG_PERFCOUNTER_IRQS) += irq-metag.o
7obj-$(CONFIG_ARCH_SUNXI) += irq-sunxi.o 8obj-$(CONFIG_ARCH_SUNXI) += irq-sun4i.o
8obj-$(CONFIG_ARCH_SPEAR3XX) += spear-shirq.o 9obj-$(CONFIG_ARCH_SPEAR3XX) += spear-shirq.o
9obj-$(CONFIG_ARM_GIC) += irq-gic.o 10obj-$(CONFIG_ARM_GIC) += irq-gic.o
10obj-$(CONFIG_ARM_VIC) += irq-vic.o 11obj-$(CONFIG_ARM_VIC) += irq-vic.o
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index 04d86a9803f4..6a5201351507 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -13,6 +13,7 @@
13#include <linux/init.h> 13#include <linux/init.h>
14#include <linux/io.h> 14#include <linux/io.h>
15#include <linux/irqdomain.h> 15#include <linux/irqdomain.h>
16#include <linux/irqchip/chained_irq.h>
16#include <linux/of_address.h> 17#include <linux/of_address.h>
17#include <linux/of_irq.h> 18#include <linux/of_irq.h>
18#include <asm/mach/irq.h> 19#include <asm/mach/irq.h>
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index fc6aebf1e4b2..1760ceb68b7b 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -28,6 +28,7 @@
28#include <linux/module.h> 28#include <linux/module.h>
29#include <linux/list.h> 29#include <linux/list.h>
30#include <linux/smp.h> 30#include <linux/smp.h>
31#include <linux/cpu.h>
31#include <linux/cpu_pm.h> 32#include <linux/cpu_pm.h>
32#include <linux/cpumask.h> 33#include <linux/cpumask.h>
33#include <linux/io.h> 34#include <linux/io.h>
@@ -38,12 +39,12 @@
38#include <linux/interrupt.h> 39#include <linux/interrupt.h>
39#include <linux/percpu.h> 40#include <linux/percpu.h>
40#include <linux/slab.h> 41#include <linux/slab.h>
42#include <linux/irqchip/chained_irq.h>
41#include <linux/irqchip/arm-gic.h> 43#include <linux/irqchip/arm-gic.h>
42 44
43#include <asm/irq.h> 45#include <asm/irq.h>
44#include <asm/exception.h> 46#include <asm/exception.h>
45#include <asm/smp_plat.h> 47#include <asm/smp_plat.h>
46#include <asm/mach/irq.h>
47 48
48#include "irqchip.h" 49#include "irqchip.h"
49 50
@@ -127,7 +128,7 @@ static inline void gic_set_base_accessor(struct gic_chip_data *data,
127#else 128#else
128#define gic_data_dist_base(d) ((d)->dist_base.common_base) 129#define gic_data_dist_base(d) ((d)->dist_base.common_base)
129#define gic_data_cpu_base(d) ((d)->cpu_base.common_base) 130#define gic_data_cpu_base(d) ((d)->cpu_base.common_base)
130#define gic_set_base_accessor(d,f) 131#define gic_set_base_accessor(d, f)
131#endif 132#endif
132 133
133static inline void __iomem *gic_dist_base(struct irq_data *d) 134static inline void __iomem *gic_dist_base(struct irq_data *d)
@@ -324,7 +325,7 @@ static void gic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
324 325
325 cascade_irq = irq_find_mapping(chip_data->domain, gic_irq); 326 cascade_irq = irq_find_mapping(chip_data->domain, gic_irq);
326 if (unlikely(gic_irq < 32 || gic_irq > 1020)) 327 if (unlikely(gic_irq < 32 || gic_irq > 1020))
327 do_bad_IRQ(cascade_irq, desc); 328 handle_bad_irq(cascade_irq, desc);
328 else 329 else
329 generic_handle_irq(cascade_irq); 330 generic_handle_irq(cascade_irq);
330 331
@@ -700,6 +701,25 @@ static int gic_irq_domain_xlate(struct irq_domain *d,
700 return 0; 701 return 0;
701} 702}
702 703
704#ifdef CONFIG_SMP
705static int __cpuinit gic_secondary_init(struct notifier_block *nfb,
706 unsigned long action, void *hcpu)
707{
708 if (action == CPU_STARTING)
709 gic_cpu_init(&gic_data[0]);
710 return NOTIFY_OK;
711}
712
713/*
714 * Notifier for enabling the GIC CPU interface. Set an arbitrarily high
715 * priority because the GIC needs to be up before the ARM generic timers.
716 */
717static struct notifier_block __cpuinitdata gic_cpu_notifier = {
718 .notifier_call = gic_secondary_init,
719 .priority = 100,
720};
721#endif
722
703const struct irq_domain_ops gic_irq_domain_ops = { 723const struct irq_domain_ops gic_irq_domain_ops = {
704 .map = gic_irq_domain_map, 724 .map = gic_irq_domain_map,
705 .xlate = gic_irq_domain_xlate, 725 .xlate = gic_irq_domain_xlate,
@@ -790,6 +810,7 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
790 810
791#ifdef CONFIG_SMP 811#ifdef CONFIG_SMP
792 set_smp_cross_call(gic_raise_softirq); 812 set_smp_cross_call(gic_raise_softirq);
813 register_cpu_notifier(&gic_cpu_notifier);
793#endif 814#endif
794 815
795 set_handle_irq(gic_handle_irq); 816 set_handle_irq(gic_handle_irq);
@@ -800,15 +821,8 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
800 gic_pm_init(gic); 821 gic_pm_init(gic);
801} 822}
802 823
803void __cpuinit gic_secondary_init(unsigned int gic_nr)
804{
805 BUG_ON(gic_nr >= MAX_GIC_NR);
806
807 gic_cpu_init(&gic_data[gic_nr]);
808}
809
810#ifdef CONFIG_OF 824#ifdef CONFIG_OF
811static int gic_cnt __initdata = 0; 825static int gic_cnt __initdata;
812 826
813int __init gic_of_init(struct device_node *node, struct device_node *parent) 827int __init gic_of_init(struct device_node *node, struct device_node *parent)
814{ 828{
diff --git a/drivers/irqchip/irq-mxs.c b/drivers/irqchip/irq-mxs.c
new file mode 100644
index 000000000000..29889bbdcc6d
--- /dev/null
+++ b/drivers/irqchip/irq-mxs.c
@@ -0,0 +1,121 @@
1/*
2 * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19#include <linux/kernel.h>
20#include <linux/init.h>
21#include <linux/irq.h>
22#include <linux/irqdomain.h>
23#include <linux/io.h>
24#include <linux/of.h>
25#include <linux/of_address.h>
26#include <linux/of_irq.h>
27#include <linux/stmp_device.h>
28#include <asm/exception.h>
29
30#include "irqchip.h"
31
32#define HW_ICOLL_VECTOR 0x0000
33#define HW_ICOLL_LEVELACK 0x0010
34#define HW_ICOLL_CTRL 0x0020
35#define HW_ICOLL_STAT_OFFSET 0x0070
36#define HW_ICOLL_INTERRUPTn_SET(n) (0x0124 + (n) * 0x10)
37#define HW_ICOLL_INTERRUPTn_CLR(n) (0x0128 + (n) * 0x10)
38#define BM_ICOLL_INTERRUPTn_ENABLE 0x00000004
39#define BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0 0x1
40
41#define ICOLL_NUM_IRQS 128
42
43static void __iomem *icoll_base;
44static struct irq_domain *icoll_domain;
45
46static void icoll_ack_irq(struct irq_data *d)
47{
48 /*
49 * The Interrupt Collector is able to prioritize irqs.
50 * Currently only level 0 is used. So acking can use
51 * BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0 unconditionally.
52 */
53 __raw_writel(BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0,
54 icoll_base + HW_ICOLL_LEVELACK);
55}
56
57static void icoll_mask_irq(struct irq_data *d)
58{
59 __raw_writel(BM_ICOLL_INTERRUPTn_ENABLE,
60 icoll_base + HW_ICOLL_INTERRUPTn_CLR(d->hwirq));
61}
62
63static void icoll_unmask_irq(struct irq_data *d)
64{
65 __raw_writel(BM_ICOLL_INTERRUPTn_ENABLE,
66 icoll_base + HW_ICOLL_INTERRUPTn_SET(d->hwirq));
67}
68
69static struct irq_chip mxs_icoll_chip = {
70 .irq_ack = icoll_ack_irq,
71 .irq_mask = icoll_mask_irq,
72 .irq_unmask = icoll_unmask_irq,
73};
74
75asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs)
76{
77 u32 irqnr;
78
79 do {
80 irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET);
81 if (irqnr != 0x7f) {
82 __raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR);
83 irqnr = irq_find_mapping(icoll_domain, irqnr);
84 handle_IRQ(irqnr, regs);
85 continue;
86 }
87 break;
88 } while (1);
89}
90
91static int icoll_irq_domain_map(struct irq_domain *d, unsigned int virq,
92 irq_hw_number_t hw)
93{
94 irq_set_chip_and_handler(virq, &mxs_icoll_chip, handle_level_irq);
95 set_irq_flags(virq, IRQF_VALID);
96
97 return 0;
98}
99
100static struct irq_domain_ops icoll_irq_domain_ops = {
101 .map = icoll_irq_domain_map,
102 .xlate = irq_domain_xlate_onecell,
103};
104
105static void __init icoll_of_init(struct device_node *np,
106 struct device_node *interrupt_parent)
107{
108 icoll_base = of_iomap(np, 0);
109 WARN_ON(!icoll_base);
110
111 /*
112 * Interrupt Collector reset, which initializes the priority
113 * for each irq to level 0.
114 */
115 stmp_reset_block(icoll_base + HW_ICOLL_CTRL);
116
117 icoll_domain = irq_domain_add_linear(np, ICOLL_NUM_IRQS,
118 &icoll_irq_domain_ops, NULL);
119 WARN_ON(!icoll_domain);
120}
121IRQCHIP_DECLARE(mxs, "fsl,icoll", icoll_of_init);
diff --git a/drivers/irqchip/irq-sun4i.c b/drivers/irqchip/irq-sun4i.c
new file mode 100644
index 000000000000..b66d4ae06898
--- /dev/null
+++ b/drivers/irqchip/irq-sun4i.c
@@ -0,0 +1,149 @@
1/*
2 * Allwinner A1X SoCs IRQ chip driver.
3 *
4 * Copyright (C) 2012 Maxime Ripard
5 *
6 * Maxime Ripard <maxime.ripard@free-electrons.com>
7 *
8 * Based on code from
9 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
10 * Benn Huang <benn@allwinnertech.com>
11 *
12 * This file is licensed under the terms of the GNU General Public
13 * License version 2. This program is licensed "as is" without any
14 * warranty of any kind, whether express or implied.
15 */
16
17#include <linux/io.h>
18#include <linux/irq.h>
19#include <linux/of.h>
20#include <linux/of_address.h>
21#include <linux/of_irq.h>
22
23#include <asm/exception.h>
24#include <asm/mach/irq.h>
25
26#include "irqchip.h"
27
28#define SUN4I_IRQ_VECTOR_REG 0x00
29#define SUN4I_IRQ_PROTECTION_REG 0x08
30#define SUN4I_IRQ_NMI_CTRL_REG 0x0c
31#define SUN4I_IRQ_PENDING_REG(x) (0x10 + 0x4 * x)
32#define SUN4I_IRQ_FIQ_PENDING_REG(x) (0x20 + 0x4 * x)
33#define SUN4I_IRQ_ENABLE_REG(x) (0x40 + 0x4 * x)
34#define SUN4I_IRQ_MASK_REG(x) (0x50 + 0x4 * x)
35
36static void __iomem *sun4i_irq_base;
37static struct irq_domain *sun4i_irq_domain;
38
39static asmlinkage void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs);
40
41void sun4i_irq_ack(struct irq_data *irqd)
42{
43 unsigned int irq = irqd_to_hwirq(irqd);
44 unsigned int irq_off = irq % 32;
45 int reg = irq / 32;
46 u32 val;
47
48 val = readl(sun4i_irq_base + SUN4I_IRQ_PENDING_REG(reg));
49 writel(val | (1 << irq_off),
50 sun4i_irq_base + SUN4I_IRQ_PENDING_REG(reg));
51}
52
53static void sun4i_irq_mask(struct irq_data *irqd)
54{
55 unsigned int irq = irqd_to_hwirq(irqd);
56 unsigned int irq_off = irq % 32;
57 int reg = irq / 32;
58 u32 val;
59
60 val = readl(sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
61 writel(val & ~(1 << irq_off),
62 sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
63}
64
65static void sun4i_irq_unmask(struct irq_data *irqd)
66{
67 unsigned int irq = irqd_to_hwirq(irqd);
68 unsigned int irq_off = irq % 32;
69 int reg = irq / 32;
70 u32 val;
71
72 val = readl(sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
73 writel(val | (1 << irq_off),
74 sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
75}
76
77static struct irq_chip sun4i_irq_chip = {
78 .name = "sun4i_irq",
79 .irq_ack = sun4i_irq_ack,
80 .irq_mask = sun4i_irq_mask,
81 .irq_unmask = sun4i_irq_unmask,
82};
83
84static int sun4i_irq_map(struct irq_domain *d, unsigned int virq,
85 irq_hw_number_t hw)
86{
87 irq_set_chip_and_handler(virq, &sun4i_irq_chip,
88 handle_level_irq);
89 set_irq_flags(virq, IRQF_VALID | IRQF_PROBE);
90
91 return 0;
92}
93
94static struct irq_domain_ops sun4i_irq_ops = {
95 .map = sun4i_irq_map,
96 .xlate = irq_domain_xlate_onecell,
97};
98
99static int __init sun4i_of_init(struct device_node *node,
100 struct device_node *parent)
101{
102 sun4i_irq_base = of_iomap(node, 0);
103 if (!sun4i_irq_base)
104 panic("%s: unable to map IC registers\n",
105 node->full_name);
106
107 /* Disable all interrupts */
108 writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(0));
109 writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(1));
110 writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(2));
111
112 /* Mask all the interrupts */
113 writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(0));
114 writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(1));
115 writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(2));
116
117 /* Clear all the pending interrupts */
118 writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(0));
119 writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(1));
120 writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(2));
121
122 /* Enable protection mode */
123 writel(0x01, sun4i_irq_base + SUN4I_IRQ_PROTECTION_REG);
124
125 /* Configure the external interrupt source type */
126 writel(0x00, sun4i_irq_base + SUN4I_IRQ_NMI_CTRL_REG);
127
128 sun4i_irq_domain = irq_domain_add_linear(node, 3 * 32,
129 &sun4i_irq_ops, NULL);
130 if (!sun4i_irq_domain)
131 panic("%s: unable to create IRQ domain\n", node->full_name);
132
133 set_handle_irq(sun4i_handle_irq);
134
135 return 0;
136}
137IRQCHIP_DECLARE(allwinner_sun4i_ic, "allwinner,sun4i-ic", sun4i_of_init);
138
139static asmlinkage void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs)
140{
141 u32 irq, hwirq;
142
143 hwirq = readl(sun4i_irq_base + SUN4I_IRQ_VECTOR_REG) >> 2;
144 while (hwirq != 0) {
145 irq = irq_find_mapping(sun4i_irq_domain, hwirq);
146 handle_IRQ(irq, regs);
147 hwirq = readl(sun4i_irq_base + SUN4I_IRQ_VECTOR_REG) >> 2;
148 }
149}
diff --git a/drivers/irqchip/irq-sunxi.c b/drivers/irqchip/irq-sunxi.c
deleted file mode 100644
index 10974fa42653..000000000000
--- a/drivers/irqchip/irq-sunxi.c
+++ /dev/null
@@ -1,151 +0,0 @@
1/*
2 * Allwinner A1X SoCs IRQ chip driver.
3 *
4 * Copyright (C) 2012 Maxime Ripard
5 *
6 * Maxime Ripard <maxime.ripard@free-electrons.com>
7 *
8 * Based on code from
9 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
10 * Benn Huang <benn@allwinnertech.com>
11 *
12 * This file is licensed under the terms of the GNU General Public
13 * License version 2. This program is licensed "as is" without any
14 * warranty of any kind, whether express or implied.
15 */
16
17#include <linux/io.h>
18#include <linux/irq.h>
19#include <linux/of.h>
20#include <linux/of_address.h>
21#include <linux/of_irq.h>
22
23#include <linux/irqchip/sunxi.h>
24
25#define SUNXI_IRQ_VECTOR_REG 0x00
26#define SUNXI_IRQ_PROTECTION_REG 0x08
27#define SUNXI_IRQ_NMI_CTRL_REG 0x0c
28#define SUNXI_IRQ_PENDING_REG(x) (0x10 + 0x4 * x)
29#define SUNXI_IRQ_FIQ_PENDING_REG(x) (0x20 + 0x4 * x)
30#define SUNXI_IRQ_ENABLE_REG(x) (0x40 + 0x4 * x)
31#define SUNXI_IRQ_MASK_REG(x) (0x50 + 0x4 * x)
32
33static void __iomem *sunxi_irq_base;
34static struct irq_domain *sunxi_irq_domain;
35
36void sunxi_irq_ack(struct irq_data *irqd)
37{
38 unsigned int irq = irqd_to_hwirq(irqd);
39 unsigned int irq_off = irq % 32;
40 int reg = irq / 32;
41 u32 val;
42
43 val = readl(sunxi_irq_base + SUNXI_IRQ_PENDING_REG(reg));
44 writel(val | (1 << irq_off),
45 sunxi_irq_base + SUNXI_IRQ_PENDING_REG(reg));
46}
47
48static void sunxi_irq_mask(struct irq_data *irqd)
49{
50 unsigned int irq = irqd_to_hwirq(irqd);
51 unsigned int irq_off = irq % 32;
52 int reg = irq / 32;
53 u32 val;
54
55 val = readl(sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
56 writel(val & ~(1 << irq_off),
57 sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
58}
59
60static void sunxi_irq_unmask(struct irq_data *irqd)
61{
62 unsigned int irq = irqd_to_hwirq(irqd);
63 unsigned int irq_off = irq % 32;
64 int reg = irq / 32;
65 u32 val;
66
67 val = readl(sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
68 writel(val | (1 << irq_off),
69 sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
70}
71
72static struct irq_chip sunxi_irq_chip = {
73 .name = "sunxi_irq",
74 .irq_ack = sunxi_irq_ack,
75 .irq_mask = sunxi_irq_mask,
76 .irq_unmask = sunxi_irq_unmask,
77};
78
79static int sunxi_irq_map(struct irq_domain *d, unsigned int virq,
80 irq_hw_number_t hw)
81{
82 irq_set_chip_and_handler(virq, &sunxi_irq_chip,
83 handle_level_irq);
84 set_irq_flags(virq, IRQF_VALID | IRQF_PROBE);
85
86 return 0;
87}
88
89static struct irq_domain_ops sunxi_irq_ops = {
90 .map = sunxi_irq_map,
91 .xlate = irq_domain_xlate_onecell,
92};
93
94static int __init sunxi_of_init(struct device_node *node,
95 struct device_node *parent)
96{
97 sunxi_irq_base = of_iomap(node, 0);
98 if (!sunxi_irq_base)
99 panic("%s: unable to map IC registers\n",
100 node->full_name);
101
102 /* Disable all interrupts */
103 writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(0));
104 writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(1));
105 writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(2));
106
107 /* Mask all the interrupts */
108 writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(0));
109 writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(1));
110 writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(2));
111
112 /* Clear all the pending interrupts */
113 writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(0));
114 writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(1));
115 writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(2));
116
117 /* Enable protection mode */
118 writel(0x01, sunxi_irq_base + SUNXI_IRQ_PROTECTION_REG);
119
120 /* Configure the external interrupt source type */
121 writel(0x00, sunxi_irq_base + SUNXI_IRQ_NMI_CTRL_REG);
122
123 sunxi_irq_domain = irq_domain_add_linear(node, 3 * 32,
124 &sunxi_irq_ops, NULL);
125 if (!sunxi_irq_domain)
126 panic("%s: unable to create IRQ domain\n", node->full_name);
127
128 return 0;
129}
130
131static struct of_device_id sunxi_irq_dt_ids[] __initconst = {
132 { .compatible = "allwinner,sunxi-ic", .data = sunxi_of_init },
133 { }
134};
135
136void __init sunxi_init_irq(void)
137{
138 of_irq_init(sunxi_irq_dt_ids);
139}
140
141asmlinkage void __exception_irq_entry sunxi_handle_irq(struct pt_regs *regs)
142{
143 u32 irq, hwirq;
144
145 hwirq = readl(sunxi_irq_base + SUNXI_IRQ_VECTOR_REG) >> 2;
146 while (hwirq != 0) {
147 irq = irq_find_mapping(sunxi_irq_domain, hwirq);
148 handle_IRQ(irq, regs);
149 hwirq = readl(sunxi_irq_base + SUNXI_IRQ_VECTOR_REG) >> 2;
150 }
151}
diff --git a/drivers/irqchip/irq-vic.c b/drivers/irqchip/irq-vic.c
index 3cf97aaebe40..884d11c7355f 100644
--- a/drivers/irqchip/irq-vic.c
+++ b/drivers/irqchip/irq-vic.c
@@ -23,6 +23,7 @@
23#include <linux/init.h> 23#include <linux/init.h>
24#include <linux/list.h> 24#include <linux/list.h>
25#include <linux/io.h> 25#include <linux/io.h>
26#include <linux/irq.h>
26#include <linux/irqdomain.h> 27#include <linux/irqdomain.h>
27#include <linux/of.h> 28#include <linux/of.h>
28#include <linux/of_address.h> 29#include <linux/of_address.h>
@@ -33,7 +34,7 @@
33#include <linux/irqchip/arm-vic.h> 34#include <linux/irqchip/arm-vic.h>
34 35
35#include <asm/exception.h> 36#include <asm/exception.h>
36#include <asm/mach/irq.h> 37#include <asm/irq.h>
37 38
38#include "irqchip.h" 39#include "irqchip.h"
39 40