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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-04 15:31:18 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-04 15:31:18 -0400
commit6fa52ed33bea997374a88dbacbba5bf8c7ac4fef (patch)
treea0904b78d66c9b99d6acf944cf58bcaa0cffc511 /drivers/irqchip
parent1db772216f48978d5146b858586f6178433aad38 (diff)
parentbc8fd900c4d460b4e4bf785bb48bfced0ac9941b (diff)
Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver changes from Olof Johansson: "This is a rather large set of patches for device drivers that for one reason or another the subsystem maintainer preferred to get merged through the arm-soc tree. There are both new drivers as well as existing drivers that are getting converted from platform-specific code into standalone drivers using the appropriate subsystem specific interfaces. In particular, we can now have pinctrl, clk, clksource and irqchip drivers in one file per driver, without the need to call into platform specific interface, or to get called from platform specific code, as long as all information about the hardware is provided through a device tree. Most of the drivers we touch this time are for clocksource. Since now most of them are part of drivers/clocksource, I expect that we won't have to touch these again from arm-soc and can let the clocksource maintainers take care of these in the future. Another larger part of this series is specific to the exynos platform, which is seeing some significant effort in upstreaming and modernization of its device drivers this time around, which unfortunately is also the cause for the churn and a lot of the merge conflicts. There is one new subsystem that gets merged as part of this series: the reset controller interface, which is a very simple interface for taking devices on the SoC out of reset or back into reset. Patches to use this interface on i.MX follow later in this merge window, and we are going to have other platforms (at least tegra and sirf) get converted in 3.11. This will let us get rid of platform specific callbacks in a number of platform independent device drivers." * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (256 commits) irqchip: s3c24xx: add missing __init annotations ARM: dts: Disable the RTC by default on exynos5 clk: exynos5250: Fix parent clock for sclk_mmc{0,1,2,3} ARM: exynos: restore mach/regs-clock.h for exynos5 clocksource: exynos_mct: fix build error on non-DT pinctrl: vt8500: wmt: Fix checking return value of pinctrl_register() irqchip: vt8500: Convert arch-vt8500 to new irqchip infrastructure reset: NULL deref on allocation failure reset: Add reset controller API dt: describe base reset signal binding ARM: EXYNOS: Add arm-pmu DT binding for exynos421x ARM: EXYNOS: Add arm-pmu DT binding for exynos5250 ARM: EXYNOS: Enable PMUs for exynos4 irqchip: exynos-combiner: Correct combined IRQs for exynos4 irqchip: exynos-combiner: Add set_irq_affinity function for combiner_irq ARM: EXYNOS: fix compilation error introduced due to common clock migration clk: exynos5250: Fix divider values for sclk_mmc{0,1,2,3} clk: exynos4: export clocks required for fimc-is clk: samsung: Fix compilation error clk: tegra: fix enum tegra114_clk to match binding ...
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/Kconfig8
-rw-r--r--drivers/irqchip/Makefile4
-rw-r--r--drivers/irqchip/exynos-combiner.c80
-rw-r--r--drivers/irqchip/irq-renesas-intc-irqpin.c547
-rw-r--r--drivers/irqchip/irq-renesas-irqc.c307
-rw-r--r--drivers/irqchip/irq-s3c24xx.c1356
-rw-r--r--drivers/irqchip/irq-vt8500.c259
7 files changed, 2543 insertions, 18 deletions
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index a350969e5efe..4a33351c25dc 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -25,6 +25,14 @@ config ARM_VIC_NR
25 The maximum number of VICs available in the system, for 25 The maximum number of VICs available in the system, for
26 power management. 26 power management.
27 27
28config RENESAS_INTC_IRQPIN
29 bool
30 select IRQ_DOMAIN
31
32config RENESAS_IRQC
33 bool
34 select IRQ_DOMAIN
35
28config VERSATILE_FPGA_IRQ 36config VERSATILE_FPGA_IRQ
29 bool 37 bool
30 select IRQ_DOMAIN 38 select IRQ_DOMAIN
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 10ef57f35a6e..c28fcccf4a0d 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -3,6 +3,7 @@ obj-$(CONFIG_IRQCHIP) += irqchip.o
3obj-$(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-$(CONFIG_ARCH_MXS) += irq-mxs.o
6obj-$(CONFIG_ARCH_S3C24XX) += irq-s3c24xx.o
6obj-$(CONFIG_METAG) += irq-metag-ext.o 7obj-$(CONFIG_METAG) += irq-metag-ext.o
7obj-$(CONFIG_METAG_PERFCOUNTER_IRQS) += irq-metag.o 8obj-$(CONFIG_METAG_PERFCOUNTER_IRQS) += irq-metag.o
8obj-$(CONFIG_ARCH_SUNXI) += irq-sun4i.o 9obj-$(CONFIG_ARCH_SUNXI) += irq-sun4i.o
@@ -10,4 +11,7 @@ obj-$(CONFIG_ARCH_SPEAR3XX) += spear-shirq.o
10obj-$(CONFIG_ARM_GIC) += irq-gic.o 11obj-$(CONFIG_ARM_GIC) += irq-gic.o
11obj-$(CONFIG_ARM_VIC) += irq-vic.o 12obj-$(CONFIG_ARM_VIC) += irq-vic.o
12obj-$(CONFIG_SIRF_IRQ) += irq-sirfsoc.o 13obj-$(CONFIG_SIRF_IRQ) += irq-sirfsoc.o
14obj-$(CONFIG_RENESAS_INTC_IRQPIN) += irq-renesas-intc-irqpin.o
15obj-$(CONFIG_RENESAS_IRQC) += irq-renesas-irqc.o
13obj-$(CONFIG_VERSATILE_FPGA_IRQ) += irq-versatile-fpga.o 16obj-$(CONFIG_VERSATILE_FPGA_IRQ) += irq-versatile-fpga.o
17obj-$(CONFIG_ARCH_VT8500) += irq-vt8500.o
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index 6a5201351507..02492ab20d22 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -32,6 +32,7 @@ struct combiner_chip_data {
32 unsigned int irq_offset; 32 unsigned int irq_offset;
33 unsigned int irq_mask; 33 unsigned int irq_mask;
34 void __iomem *base; 34 void __iomem *base;
35 unsigned int parent_irq;
35}; 36};
36 37
37static struct irq_domain *combiner_irq_domain; 38static struct irq_domain *combiner_irq_domain;
@@ -88,22 +89,46 @@ static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
88 chained_irq_exit(chip, desc); 89 chained_irq_exit(chip, desc);
89} 90}
90 91
92#ifdef CONFIG_SMP
93static int combiner_set_affinity(struct irq_data *d,
94 const struct cpumask *mask_val, bool force)
95{
96 struct combiner_chip_data *chip_data = irq_data_get_irq_chip_data(d);
97 struct irq_chip *chip = irq_get_chip(chip_data->parent_irq);
98 struct irq_data *data = irq_get_irq_data(chip_data->parent_irq);
99
100 if (chip && chip->irq_set_affinity)
101 return chip->irq_set_affinity(data, mask_val, force);
102 else
103 return -EINVAL;
104}
105#endif
106
91static struct irq_chip combiner_chip = { 107static struct irq_chip combiner_chip = {
92 .name = "COMBINER", 108 .name = "COMBINER",
93 .irq_mask = combiner_mask_irq, 109 .irq_mask = combiner_mask_irq,
94 .irq_unmask = combiner_unmask_irq, 110 .irq_unmask = combiner_unmask_irq,
111#ifdef CONFIG_SMP
112 .irq_set_affinity = combiner_set_affinity,
113#endif
95}; 114};
96 115
97static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq) 116static unsigned int max_combiner_nr(void)
98{ 117{
99 unsigned int max_nr;
100
101 if (soc_is_exynos5250()) 118 if (soc_is_exynos5250())
102 max_nr = EXYNOS5_MAX_COMBINER_NR; 119 return EXYNOS5_MAX_COMBINER_NR;
120 else if (soc_is_exynos4412())
121 return EXYNOS4412_MAX_COMBINER_NR;
122 else if (soc_is_exynos4212())
123 return EXYNOS4212_MAX_COMBINER_NR;
103 else 124 else
104 max_nr = EXYNOS4_MAX_COMBINER_NR; 125 return EXYNOS4210_MAX_COMBINER_NR;
126}
105 127
106 if (combiner_nr >= max_nr) 128static void __init combiner_cascade_irq(unsigned int combiner_nr,
129 unsigned int irq)
130{
131 if (combiner_nr >= max_combiner_nr())
107 BUG(); 132 BUG();
108 if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0) 133 if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0)
109 BUG(); 134 BUG();
@@ -111,12 +136,13 @@ static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int i
111} 136}
112 137
113static void __init combiner_init_one(unsigned int combiner_nr, 138static void __init combiner_init_one(unsigned int combiner_nr,
114 void __iomem *base) 139 void __iomem *base, unsigned int irq)
115{ 140{
116 combiner_data[combiner_nr].base = base; 141 combiner_data[combiner_nr].base = base;
117 combiner_data[combiner_nr].irq_offset = irq_find_mapping( 142 combiner_data[combiner_nr].irq_offset = irq_find_mapping(
118 combiner_irq_domain, combiner_nr * MAX_IRQ_IN_COMBINER); 143 combiner_irq_domain, combiner_nr * MAX_IRQ_IN_COMBINER);
119 combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3); 144 combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3);
145 combiner_data[combiner_nr].parent_irq = irq;
120 146
121 /* Disable all interrupts */ 147 /* Disable all interrupts */
122 __raw_writel(combiner_data[combiner_nr].irq_mask, 148 __raw_writel(combiner_data[combiner_nr].irq_mask,
@@ -167,23 +193,38 @@ static struct irq_domain_ops combiner_irq_domain_ops = {
167 .map = combiner_irq_domain_map, 193 .map = combiner_irq_domain_map,
168}; 194};
169 195
196static unsigned int exynos4x12_combiner_extra_irq(int group)
197{
198 switch (group) {
199 case 16:
200 return IRQ_SPI(107);
201 case 17:
202 return IRQ_SPI(108);
203 case 18:
204 return IRQ_SPI(48);
205 case 19:
206 return IRQ_SPI(42);
207 default:
208 return 0;
209 }
210}
211
170void __init combiner_init(void __iomem *combiner_base, 212void __init combiner_init(void __iomem *combiner_base,
171 struct device_node *np) 213 struct device_node *np)
172{ 214{
173 int i, irq, irq_base; 215 int i, irq, irq_base;
174 unsigned int max_nr, nr_irq; 216 unsigned int max_nr, nr_irq;
175 217
218 max_nr = max_combiner_nr();
219
176 if (np) { 220 if (np) {
177 if (of_property_read_u32(np, "samsung,combiner-nr", &max_nr)) { 221 if (of_property_read_u32(np, "samsung,combiner-nr", &max_nr)) {
178 pr_warning("%s: number of combiners not specified, " 222 pr_info("%s: number of combiners not specified, "
179 "setting default as %d.\n", 223 "setting default as %d.\n",
180 __func__, EXYNOS4_MAX_COMBINER_NR); 224 __func__, max_nr);
181 max_nr = EXYNOS4_MAX_COMBINER_NR;
182 } 225 }
183 } else {
184 max_nr = soc_is_exynos5250() ? EXYNOS5_MAX_COMBINER_NR :
185 EXYNOS4_MAX_COMBINER_NR;
186 } 226 }
227
187 nr_irq = max_nr * MAX_IRQ_IN_COMBINER; 228 nr_irq = max_nr * MAX_IRQ_IN_COMBINER;
188 229
189 irq_base = irq_alloc_descs(COMBINER_IRQ(0, 0), 1, nr_irq, 0); 230 irq_base = irq_alloc_descs(COMBINER_IRQ(0, 0), 1, nr_irq, 0);
@@ -200,12 +241,15 @@ void __init combiner_init(void __iomem *combiner_base,
200 } 241 }
201 242
202 for (i = 0; i < max_nr; i++) { 243 for (i = 0; i < max_nr; i++) {
203 combiner_init_one(i, combiner_base + (i >> 2) * 0x10); 244 if (i < EXYNOS4210_MAX_COMBINER_NR || soc_is_exynos5250())
204 irq = IRQ_SPI(i); 245 irq = IRQ_SPI(i);
246 else
247 irq = exynos4x12_combiner_extra_irq(i);
205#ifdef CONFIG_OF 248#ifdef CONFIG_OF
206 if (np) 249 if (np)
207 irq = irq_of_parse_and_map(np, i); 250 irq = irq_of_parse_and_map(np, i);
208#endif 251#endif
252 combiner_init_one(i, combiner_base + (i >> 2) * 0x10, irq);
209 combiner_cascade_irq(i, irq); 253 combiner_cascade_irq(i, irq);
210 } 254 }
211} 255}
diff --git a/drivers/irqchip/irq-renesas-intc-irqpin.c b/drivers/irqchip/irq-renesas-intc-irqpin.c
new file mode 100644
index 000000000000..5a68e5accec1
--- /dev/null
+++ b/drivers/irqchip/irq-renesas-intc-irqpin.c
@@ -0,0 +1,547 @@
1/*
2 * Renesas INTC External IRQ Pin Driver
3 *
4 * Copyright (C) 2013 Magnus Damm
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/init.h>
21#include <linux/platform_device.h>
22#include <linux/spinlock.h>
23#include <linux/interrupt.h>
24#include <linux/ioport.h>
25#include <linux/io.h>
26#include <linux/irq.h>
27#include <linux/irqdomain.h>
28#include <linux/err.h>
29#include <linux/slab.h>
30#include <linux/module.h>
31#include <linux/platform_data/irq-renesas-intc-irqpin.h>
32
33#define INTC_IRQPIN_MAX 8 /* maximum 8 interrupts per driver instance */
34
35#define INTC_IRQPIN_REG_SENSE 0 /* ICRn */
36#define INTC_IRQPIN_REG_PRIO 1 /* INTPRInn */
37#define INTC_IRQPIN_REG_SOURCE 2 /* INTREQnn */
38#define INTC_IRQPIN_REG_MASK 3 /* INTMSKnn */
39#define INTC_IRQPIN_REG_CLEAR 4 /* INTMSKCLRnn */
40#define INTC_IRQPIN_REG_NR 5
41
42/* INTC external IRQ PIN hardware register access:
43 *
44 * SENSE is read-write 32-bit with 2-bits or 4-bits per IRQ (*)
45 * PRIO is read-write 32-bit with 4-bits per IRQ (**)
46 * SOURCE is read-only 32-bit or 8-bit with 1-bit per IRQ (***)
47 * MASK is write-only 32-bit or 8-bit with 1-bit per IRQ (***)
48 * CLEAR is write-only 32-bit or 8-bit with 1-bit per IRQ (***)
49 *
50 * (*) May be accessed by more than one driver instance - lock needed
51 * (**) Read-modify-write access by one driver instance - lock needed
52 * (***) Accessed by one driver instance only - no locking needed
53 */
54
55struct intc_irqpin_iomem {
56 void __iomem *iomem;
57 unsigned long (*read)(void __iomem *iomem);
58 void (*write)(void __iomem *iomem, unsigned long data);
59 int width;
60};
61
62struct intc_irqpin_irq {
63 int hw_irq;
64 int requested_irq;
65 int domain_irq;
66 struct intc_irqpin_priv *p;
67};
68
69struct intc_irqpin_priv {
70 struct intc_irqpin_iomem iomem[INTC_IRQPIN_REG_NR];
71 struct intc_irqpin_irq irq[INTC_IRQPIN_MAX];
72 struct renesas_intc_irqpin_config config;
73 unsigned int number_of_irqs;
74 struct platform_device *pdev;
75 struct irq_chip irq_chip;
76 struct irq_domain *irq_domain;
77 bool shared_irqs;
78 u8 shared_irq_mask;
79};
80
81static unsigned long intc_irqpin_read32(void __iomem *iomem)
82{
83 return ioread32(iomem);
84}
85
86static unsigned long intc_irqpin_read8(void __iomem *iomem)
87{
88 return ioread8(iomem);
89}
90
91static void intc_irqpin_write32(void __iomem *iomem, unsigned long data)
92{
93 iowrite32(data, iomem);
94}
95
96static void intc_irqpin_write8(void __iomem *iomem, unsigned long data)
97{
98 iowrite8(data, iomem);
99}
100
101static inline unsigned long intc_irqpin_read(struct intc_irqpin_priv *p,
102 int reg)
103{
104 struct intc_irqpin_iomem *i = &p->iomem[reg];
105
106 return i->read(i->iomem);
107}
108
109static inline void intc_irqpin_write(struct intc_irqpin_priv *p,
110 int reg, unsigned long data)
111{
112 struct intc_irqpin_iomem *i = &p->iomem[reg];
113
114 i->write(i->iomem, data);
115}
116
117static inline unsigned long intc_irqpin_hwirq_mask(struct intc_irqpin_priv *p,
118 int reg, int hw_irq)
119{
120 return BIT((p->iomem[reg].width - 1) - hw_irq);
121}
122
123static inline void intc_irqpin_irq_write_hwirq(struct intc_irqpin_priv *p,
124 int reg, int hw_irq)
125{
126 intc_irqpin_write(p, reg, intc_irqpin_hwirq_mask(p, reg, hw_irq));
127}
128
129static DEFINE_RAW_SPINLOCK(intc_irqpin_lock); /* only used by slow path */
130
131static void intc_irqpin_read_modify_write(struct intc_irqpin_priv *p,
132 int reg, int shift,
133 int width, int value)
134{
135 unsigned long flags;
136 unsigned long tmp;
137
138 raw_spin_lock_irqsave(&intc_irqpin_lock, flags);
139
140 tmp = intc_irqpin_read(p, reg);
141 tmp &= ~(((1 << width) - 1) << shift);
142 tmp |= value << shift;
143 intc_irqpin_write(p, reg, tmp);
144
145 raw_spin_unlock_irqrestore(&intc_irqpin_lock, flags);
146}
147
148static void intc_irqpin_mask_unmask_prio(struct intc_irqpin_priv *p,
149 int irq, int do_mask)
150{
151 int bitfield_width = 4; /* PRIO assumed to have fixed bitfield width */
152 int shift = (7 - irq) * bitfield_width; /* PRIO assumed to be 32-bit */
153
154 intc_irqpin_read_modify_write(p, INTC_IRQPIN_REG_PRIO,
155 shift, bitfield_width,
156 do_mask ? 0 : (1 << bitfield_width) - 1);
157}
158
159static int intc_irqpin_set_sense(struct intc_irqpin_priv *p, int irq, int value)
160{
161 int bitfield_width = p->config.sense_bitfield_width;
162 int shift = (7 - irq) * bitfield_width; /* SENSE assumed to be 32-bit */
163
164 dev_dbg(&p->pdev->dev, "sense irq = %d, mode = %d\n", irq, value);
165
166 if (value >= (1 << bitfield_width))
167 return -EINVAL;
168
169 intc_irqpin_read_modify_write(p, INTC_IRQPIN_REG_SENSE, shift,
170 bitfield_width, value);
171 return 0;
172}
173
174static void intc_irqpin_dbg(struct intc_irqpin_irq *i, char *str)
175{
176 dev_dbg(&i->p->pdev->dev, "%s (%d:%d:%d)\n",
177 str, i->requested_irq, i->hw_irq, i->domain_irq);
178}
179
180static void intc_irqpin_irq_enable(struct irq_data *d)
181{
182 struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
183 int hw_irq = irqd_to_hwirq(d);
184
185 intc_irqpin_dbg(&p->irq[hw_irq], "enable");
186 intc_irqpin_irq_write_hwirq(p, INTC_IRQPIN_REG_CLEAR, hw_irq);
187}
188
189static void intc_irqpin_irq_disable(struct irq_data *d)
190{
191 struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
192 int hw_irq = irqd_to_hwirq(d);
193
194 intc_irqpin_dbg(&p->irq[hw_irq], "disable");
195 intc_irqpin_irq_write_hwirq(p, INTC_IRQPIN_REG_MASK, hw_irq);
196}
197
198static void intc_irqpin_shared_irq_enable(struct irq_data *d)
199{
200 struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
201 int hw_irq = irqd_to_hwirq(d);
202
203 intc_irqpin_dbg(&p->irq[hw_irq], "shared enable");
204 intc_irqpin_irq_write_hwirq(p, INTC_IRQPIN_REG_CLEAR, hw_irq);
205
206 p->shared_irq_mask &= ~BIT(hw_irq);
207}
208
209static void intc_irqpin_shared_irq_disable(struct irq_data *d)
210{
211 struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
212 int hw_irq = irqd_to_hwirq(d);
213
214 intc_irqpin_dbg(&p->irq[hw_irq], "shared disable");
215 intc_irqpin_irq_write_hwirq(p, INTC_IRQPIN_REG_MASK, hw_irq);
216
217 p->shared_irq_mask |= BIT(hw_irq);
218}
219
220static void intc_irqpin_irq_enable_force(struct irq_data *d)
221{
222 struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
223 int irq = p->irq[irqd_to_hwirq(d)].requested_irq;
224
225 intc_irqpin_irq_enable(d);
226
227 /* enable interrupt through parent interrupt controller,
228 * assumes non-shared interrupt with 1:1 mapping
229 * needed for busted IRQs on some SoCs like sh73a0
230 */
231 irq_get_chip(irq)->irq_unmask(irq_get_irq_data(irq));
232}
233
234static void intc_irqpin_irq_disable_force(struct irq_data *d)
235{
236 struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
237 int irq = p->irq[irqd_to_hwirq(d)].requested_irq;
238
239 /* disable interrupt through parent interrupt controller,
240 * assumes non-shared interrupt with 1:1 mapping
241 * needed for busted IRQs on some SoCs like sh73a0
242 */
243 irq_get_chip(irq)->irq_mask(irq_get_irq_data(irq));
244 intc_irqpin_irq_disable(d);
245}
246
247#define INTC_IRQ_SENSE_VALID 0x10
248#define INTC_IRQ_SENSE(x) (x + INTC_IRQ_SENSE_VALID)
249
250static unsigned char intc_irqpin_sense[IRQ_TYPE_SENSE_MASK + 1] = {
251 [IRQ_TYPE_EDGE_FALLING] = INTC_IRQ_SENSE(0x00),
252 [IRQ_TYPE_EDGE_RISING] = INTC_IRQ_SENSE(0x01),
253 [IRQ_TYPE_LEVEL_LOW] = INTC_IRQ_SENSE(0x02),
254 [IRQ_TYPE_LEVEL_HIGH] = INTC_IRQ_SENSE(0x03),
255 [IRQ_TYPE_EDGE_BOTH] = INTC_IRQ_SENSE(0x04),
256};
257
258static int intc_irqpin_irq_set_type(struct irq_data *d, unsigned int type)
259{
260 unsigned char value = intc_irqpin_sense[type & IRQ_TYPE_SENSE_MASK];
261 struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
262
263 if (!(value & INTC_IRQ_SENSE_VALID))
264 return -EINVAL;
265
266 return intc_irqpin_set_sense(p, irqd_to_hwirq(d),
267 value ^ INTC_IRQ_SENSE_VALID);
268}
269
270static irqreturn_t intc_irqpin_irq_handler(int irq, void *dev_id)
271{
272 struct intc_irqpin_irq *i = dev_id;
273 struct intc_irqpin_priv *p = i->p;
274 unsigned long bit;
275
276 intc_irqpin_dbg(i, "demux1");
277 bit = intc_irqpin_hwirq_mask(p, INTC_IRQPIN_REG_SOURCE, i->hw_irq);
278
279 if (intc_irqpin_read(p, INTC_IRQPIN_REG_SOURCE) & bit) {
280 intc_irqpin_write(p, INTC_IRQPIN_REG_SOURCE, ~bit);
281 intc_irqpin_dbg(i, "demux2");
282 generic_handle_irq(i->domain_irq);
283 return IRQ_HANDLED;
284 }
285 return IRQ_NONE;
286}
287
288static irqreturn_t intc_irqpin_shared_irq_handler(int irq, void *dev_id)
289{
290 struct intc_irqpin_priv *p = dev_id;
291 unsigned int reg_source = intc_irqpin_read(p, INTC_IRQPIN_REG_SOURCE);
292 irqreturn_t status = IRQ_NONE;
293 int k;
294
295 for (k = 0; k < 8; k++) {
296 if (reg_source & BIT(7 - k)) {
297 if (BIT(k) & p->shared_irq_mask)
298 continue;
299
300 status |= intc_irqpin_irq_handler(irq, &p->irq[k]);
301 }
302 }
303
304 return status;
305}
306
307static int intc_irqpin_irq_domain_map(struct irq_domain *h, unsigned int virq,
308 irq_hw_number_t hw)
309{
310 struct intc_irqpin_priv *p = h->host_data;
311
312 p->irq[hw].domain_irq = virq;
313 p->irq[hw].hw_irq = hw;
314
315 intc_irqpin_dbg(&p->irq[hw], "map");
316 irq_set_chip_data(virq, h->host_data);
317 irq_set_chip_and_handler(virq, &p->irq_chip, handle_level_irq);
318 set_irq_flags(virq, IRQF_VALID); /* kill me now */
319 return 0;
320}
321
322static struct irq_domain_ops intc_irqpin_irq_domain_ops = {
323 .map = intc_irqpin_irq_domain_map,
324 .xlate = irq_domain_xlate_twocell,
325};
326
327static int intc_irqpin_probe(struct platform_device *pdev)
328{
329 struct renesas_intc_irqpin_config *pdata = pdev->dev.platform_data;
330 struct intc_irqpin_priv *p;
331 struct intc_irqpin_iomem *i;
332 struct resource *io[INTC_IRQPIN_REG_NR];
333 struct resource *irq;
334 struct irq_chip *irq_chip;
335 void (*enable_fn)(struct irq_data *d);
336 void (*disable_fn)(struct irq_data *d);
337 const char *name = dev_name(&pdev->dev);
338 int ref_irq;
339 int ret;
340 int k;
341
342 p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
343 if (!p) {
344 dev_err(&pdev->dev, "failed to allocate driver data\n");
345 ret = -ENOMEM;
346 goto err0;
347 }
348
349 /* deal with driver instance configuration */
350 if (pdata)
351 memcpy(&p->config, pdata, sizeof(*pdata));
352 if (!p->config.sense_bitfield_width)
353 p->config.sense_bitfield_width = 4; /* default to 4 bits */
354
355 p->pdev = pdev;
356 platform_set_drvdata(pdev, p);
357
358 /* get hold of manadatory IOMEM */
359 for (k = 0; k < INTC_IRQPIN_REG_NR; k++) {
360 io[k] = platform_get_resource(pdev, IORESOURCE_MEM, k);
361 if (!io[k]) {
362 dev_err(&pdev->dev, "not enough IOMEM resources\n");
363 ret = -EINVAL;
364 goto err0;
365 }
366 }
367
368 /* allow any number of IRQs between 1 and INTC_IRQPIN_MAX */
369 for (k = 0; k < INTC_IRQPIN_MAX; k++) {
370 irq = platform_get_resource(pdev, IORESOURCE_IRQ, k);
371 if (!irq)
372 break;
373
374 p->irq[k].p = p;
375 p->irq[k].requested_irq = irq->start;
376 }
377
378 p->number_of_irqs = k;
379 if (p->number_of_irqs < 1) {
380 dev_err(&pdev->dev, "not enough IRQ resources\n");
381 ret = -EINVAL;
382 goto err0;
383 }
384
385 /* ioremap IOMEM and setup read/write callbacks */
386 for (k = 0; k < INTC_IRQPIN_REG_NR; k++) {
387 i = &p->iomem[k];
388
389 switch (resource_size(io[k])) {
390 case 1:
391 i->width = 8;
392 i->read = intc_irqpin_read8;
393 i->write = intc_irqpin_write8;
394 break;
395 case 4:
396 i->width = 32;
397 i->read = intc_irqpin_read32;
398 i->write = intc_irqpin_write32;
399 break;
400 default:
401 dev_err(&pdev->dev, "IOMEM size mismatch\n");
402 ret = -EINVAL;
403 goto err0;
404 }
405
406 i->iomem = devm_ioremap_nocache(&pdev->dev, io[k]->start,
407 resource_size(io[k]));
408 if (!i->iomem) {
409 dev_err(&pdev->dev, "failed to remap IOMEM\n");
410 ret = -ENXIO;
411 goto err0;
412 }
413 }
414
415 /* mask all interrupts using priority */
416 for (k = 0; k < p->number_of_irqs; k++)
417 intc_irqpin_mask_unmask_prio(p, k, 1);
418
419 /* clear all pending interrupts */
420 intc_irqpin_write(p, INTC_IRQPIN_REG_SOURCE, 0x0);
421
422 /* scan for shared interrupt lines */
423 ref_irq = p->irq[0].requested_irq;
424 p->shared_irqs = true;
425 for (k = 1; k < p->number_of_irqs; k++) {
426 if (ref_irq != p->irq[k].requested_irq) {
427 p->shared_irqs = false;
428 break;
429 }
430 }
431
432 /* use more severe masking method if requested */
433 if (p->config.control_parent) {
434 enable_fn = intc_irqpin_irq_enable_force;
435 disable_fn = intc_irqpin_irq_disable_force;
436 } else if (!p->shared_irqs) {
437 enable_fn = intc_irqpin_irq_enable;
438 disable_fn = intc_irqpin_irq_disable;
439 } else {
440 enable_fn = intc_irqpin_shared_irq_enable;
441 disable_fn = intc_irqpin_shared_irq_disable;
442 }
443
444 irq_chip = &p->irq_chip;
445 irq_chip->name = name;
446 irq_chip->irq_mask = disable_fn;
447 irq_chip->irq_unmask = enable_fn;
448 irq_chip->irq_enable = enable_fn;
449 irq_chip->irq_disable = disable_fn;
450 irq_chip->irq_set_type = intc_irqpin_irq_set_type;
451 irq_chip->flags = IRQCHIP_SKIP_SET_WAKE;
452
453 p->irq_domain = irq_domain_add_simple(pdev->dev.of_node,
454 p->number_of_irqs,
455 p->config.irq_base,
456 &intc_irqpin_irq_domain_ops, p);
457 if (!p->irq_domain) {
458 ret = -ENXIO;
459 dev_err(&pdev->dev, "cannot initialize irq domain\n");
460 goto err0;
461 }
462
463 if (p->shared_irqs) {
464 /* request one shared interrupt */
465 if (devm_request_irq(&pdev->dev, p->irq[0].requested_irq,
466 intc_irqpin_shared_irq_handler,
467 IRQF_SHARED, name, p)) {
468 dev_err(&pdev->dev, "failed to request low IRQ\n");
469 ret = -ENOENT;
470 goto err1;
471 }
472 } else {
473 /* request interrupts one by one */
474 for (k = 0; k < p->number_of_irqs; k++) {
475 if (devm_request_irq(&pdev->dev,
476 p->irq[k].requested_irq,
477 intc_irqpin_irq_handler,
478 0, name, &p->irq[k])) {
479 dev_err(&pdev->dev,
480 "failed to request low IRQ\n");
481 ret = -ENOENT;
482 goto err1;
483 }
484 }
485 }
486
487 /* unmask all interrupts on prio level */
488 for (k = 0; k < p->number_of_irqs; k++)
489 intc_irqpin_mask_unmask_prio(p, k, 0);
490
491 dev_info(&pdev->dev, "driving %d irqs\n", p->number_of_irqs);
492
493 /* warn in case of mismatch if irq base is specified */
494 if (p->config.irq_base) {
495 if (p->config.irq_base != p->irq[0].domain_irq)
496 dev_warn(&pdev->dev, "irq base mismatch (%d/%d)\n",
497 p->config.irq_base, p->irq[0].domain_irq);
498 }
499
500 return 0;
501
502err1:
503 irq_domain_remove(p->irq_domain);
504err0:
505 return ret;
506}
507
508static int intc_irqpin_remove(struct platform_device *pdev)
509{
510 struct intc_irqpin_priv *p = platform_get_drvdata(pdev);
511
512 irq_domain_remove(p->irq_domain);
513
514 return 0;
515}
516
517static const struct of_device_id intc_irqpin_dt_ids[] = {
518 { .compatible = "renesas,intc-irqpin", },
519 {},
520};
521MODULE_DEVICE_TABLE(of, intc_irqpin_dt_ids);
522
523static struct platform_driver intc_irqpin_device_driver = {
524 .probe = intc_irqpin_probe,
525 .remove = intc_irqpin_remove,
526 .driver = {
527 .name = "renesas_intc_irqpin",
528 .of_match_table = intc_irqpin_dt_ids,
529 .owner = THIS_MODULE,
530 }
531};
532
533static int __init intc_irqpin_init(void)
534{
535 return platform_driver_register(&intc_irqpin_device_driver);
536}
537postcore_initcall(intc_irqpin_init);
538
539static void __exit intc_irqpin_exit(void)
540{
541 platform_driver_unregister(&intc_irqpin_device_driver);
542}
543module_exit(intc_irqpin_exit);
544
545MODULE_AUTHOR("Magnus Damm");
546MODULE_DESCRIPTION("Renesas INTC External IRQ Pin Driver");
547MODULE_LICENSE("GPL v2");
diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
new file mode 100644
index 000000000000..927bff373aac
--- /dev/null
+++ b/drivers/irqchip/irq-renesas-irqc.c
@@ -0,0 +1,307 @@
1/*
2 * Renesas IRQC Driver
3 *
4 * Copyright (C) 2013 Magnus Damm
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/init.h>
21#include <linux/platform_device.h>
22#include <linux/spinlock.h>
23#include <linux/interrupt.h>
24#include <linux/ioport.h>
25#include <linux/io.h>
26#include <linux/irq.h>
27#include <linux/irqdomain.h>
28#include <linux/err.h>
29#include <linux/slab.h>
30#include <linux/module.h>
31#include <linux/platform_data/irq-renesas-irqc.h>
32
33#define IRQC_IRQ_MAX 32 /* maximum 32 interrupts per driver instance */
34
35#define IRQC_REQ_STS 0x00
36#define IRQC_EN_STS 0x04
37#define IRQC_EN_SET 0x08
38#define IRQC_INT_CPU_BASE(n) (0x000 + ((n) * 0x10))
39#define DETECT_STATUS 0x100
40#define IRQC_CONFIG(n) (0x180 + ((n) * 0x04))
41
42struct irqc_irq {
43 int hw_irq;
44 int requested_irq;
45 int domain_irq;
46 struct irqc_priv *p;
47};
48
49struct irqc_priv {
50 void __iomem *iomem;
51 void __iomem *cpu_int_base;
52 struct irqc_irq irq[IRQC_IRQ_MAX];
53 struct renesas_irqc_config config;
54 unsigned int number_of_irqs;
55 struct platform_device *pdev;
56 struct irq_chip irq_chip;
57 struct irq_domain *irq_domain;
58};
59
60static void irqc_dbg(struct irqc_irq *i, char *str)
61{
62 dev_dbg(&i->p->pdev->dev, "%s (%d:%d:%d)\n",
63 str, i->requested_irq, i->hw_irq, i->domain_irq);
64}
65
66static void irqc_irq_enable(struct irq_data *d)
67{
68 struct irqc_priv *p = irq_data_get_irq_chip_data(d);
69 int hw_irq = irqd_to_hwirq(d);
70
71 irqc_dbg(&p->irq[hw_irq], "enable");
72 iowrite32(BIT(hw_irq), p->cpu_int_base + IRQC_EN_SET);
73}
74
75static void irqc_irq_disable(struct irq_data *d)
76{
77 struct irqc_priv *p = irq_data_get_irq_chip_data(d);
78 int hw_irq = irqd_to_hwirq(d);
79
80 irqc_dbg(&p->irq[hw_irq], "disable");
81 iowrite32(BIT(hw_irq), p->cpu_int_base + IRQC_EN_STS);
82}
83
84#define INTC_IRQ_SENSE_VALID 0x10
85#define INTC_IRQ_SENSE(x) (x + INTC_IRQ_SENSE_VALID)
86
87static unsigned char irqc_sense[IRQ_TYPE_SENSE_MASK + 1] = {
88 [IRQ_TYPE_LEVEL_LOW] = INTC_IRQ_SENSE(0x01),
89 [IRQ_TYPE_LEVEL_HIGH] = INTC_IRQ_SENSE(0x02),
90 [IRQ_TYPE_EDGE_FALLING] = INTC_IRQ_SENSE(0x04), /* Synchronous */
91 [IRQ_TYPE_EDGE_RISING] = INTC_IRQ_SENSE(0x08), /* Synchronous */
92 [IRQ_TYPE_EDGE_BOTH] = INTC_IRQ_SENSE(0x0c), /* Synchronous */
93};
94
95static int irqc_irq_set_type(struct irq_data *d, unsigned int type)
96{
97 struct irqc_priv *p = irq_data_get_irq_chip_data(d);
98 int hw_irq = irqd_to_hwirq(d);
99 unsigned char value = irqc_sense[type & IRQ_TYPE_SENSE_MASK];
100 unsigned long tmp;
101
102 irqc_dbg(&p->irq[hw_irq], "sense");
103
104 if (!(value & INTC_IRQ_SENSE_VALID))
105 return -EINVAL;
106
107 tmp = ioread32(p->iomem + IRQC_CONFIG(hw_irq));
108 tmp &= ~0x3f;
109 tmp |= value ^ INTC_IRQ_SENSE_VALID;
110 iowrite32(tmp, p->iomem + IRQC_CONFIG(hw_irq));
111 return 0;
112}
113
114static irqreturn_t irqc_irq_handler(int irq, void *dev_id)
115{
116 struct irqc_irq *i = dev_id;
117 struct irqc_priv *p = i->p;
118 unsigned long bit = BIT(i->hw_irq);
119
120 irqc_dbg(i, "demux1");
121
122 if (ioread32(p->iomem + DETECT_STATUS) & bit) {
123 iowrite32(bit, p->iomem + DETECT_STATUS);
124 irqc_dbg(i, "demux2");
125 generic_handle_irq(i->domain_irq);
126 return IRQ_HANDLED;
127 }
128 return IRQ_NONE;
129}
130
131static int irqc_irq_domain_map(struct irq_domain *h, unsigned int virq,
132 irq_hw_number_t hw)
133{
134 struct irqc_priv *p = h->host_data;
135
136 p->irq[hw].domain_irq = virq;
137 p->irq[hw].hw_irq = hw;
138
139 irqc_dbg(&p->irq[hw], "map");
140 irq_set_chip_data(virq, h->host_data);
141 irq_set_chip_and_handler(virq, &p->irq_chip, handle_level_irq);
142 set_irq_flags(virq, IRQF_VALID); /* kill me now */
143 return 0;
144}
145
146static struct irq_domain_ops irqc_irq_domain_ops = {
147 .map = irqc_irq_domain_map,
148 .xlate = irq_domain_xlate_twocell,
149};
150
151static int irqc_probe(struct platform_device *pdev)
152{
153 struct renesas_irqc_config *pdata = pdev->dev.platform_data;
154 struct irqc_priv *p;
155 struct resource *io;
156 struct resource *irq;
157 struct irq_chip *irq_chip;
158 const char *name = dev_name(&pdev->dev);
159 int ret;
160 int k;
161
162 p = kzalloc(sizeof(*p), GFP_KERNEL);
163 if (!p) {
164 dev_err(&pdev->dev, "failed to allocate driver data\n");
165 ret = -ENOMEM;
166 goto err0;
167 }
168
169 /* deal with driver instance configuration */
170 if (pdata)
171 memcpy(&p->config, pdata, sizeof(*pdata));
172
173 p->pdev = pdev;
174 platform_set_drvdata(pdev, p);
175
176 /* get hold of manadatory IOMEM */
177 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
178 if (!io) {
179 dev_err(&pdev->dev, "not enough IOMEM resources\n");
180 ret = -EINVAL;
181 goto err1;
182 }
183
184 /* allow any number of IRQs between 1 and IRQC_IRQ_MAX */
185 for (k = 0; k < IRQC_IRQ_MAX; k++) {
186 irq = platform_get_resource(pdev, IORESOURCE_IRQ, k);
187 if (!irq)
188 break;
189
190 p->irq[k].p = p;
191 p->irq[k].requested_irq = irq->start;
192 }
193
194 p->number_of_irqs = k;
195 if (p->number_of_irqs < 1) {
196 dev_err(&pdev->dev, "not enough IRQ resources\n");
197 ret = -EINVAL;
198 goto err1;
199 }
200
201 /* ioremap IOMEM and setup read/write callbacks */
202 p->iomem = ioremap_nocache(io->start, resource_size(io));
203 if (!p->iomem) {
204 dev_err(&pdev->dev, "failed to remap IOMEM\n");
205 ret = -ENXIO;
206 goto err2;
207 }
208
209 p->cpu_int_base = p->iomem + IRQC_INT_CPU_BASE(0); /* SYS-SPI */
210
211 irq_chip = &p->irq_chip;
212 irq_chip->name = name;
213 irq_chip->irq_mask = irqc_irq_disable;
214 irq_chip->irq_unmask = irqc_irq_enable;
215 irq_chip->irq_enable = irqc_irq_enable;
216 irq_chip->irq_disable = irqc_irq_disable;
217 irq_chip->irq_set_type = irqc_irq_set_type;
218 irq_chip->flags = IRQCHIP_SKIP_SET_WAKE;
219
220 p->irq_domain = irq_domain_add_simple(pdev->dev.of_node,
221 p->number_of_irqs,
222 p->config.irq_base,
223 &irqc_irq_domain_ops, p);
224 if (!p->irq_domain) {
225 ret = -ENXIO;
226 dev_err(&pdev->dev, "cannot initialize irq domain\n");
227 goto err2;
228 }
229
230 /* request interrupts one by one */
231 for (k = 0; k < p->number_of_irqs; k++) {
232 if (request_irq(p->irq[k].requested_irq, irqc_irq_handler,
233 0, name, &p->irq[k])) {
234 dev_err(&pdev->dev, "failed to request IRQ\n");
235 ret = -ENOENT;
236 goto err3;
237 }
238 }
239
240 dev_info(&pdev->dev, "driving %d irqs\n", p->number_of_irqs);
241
242 /* warn in case of mismatch if irq base is specified */
243 if (p->config.irq_base) {
244 if (p->config.irq_base != p->irq[0].domain_irq)
245 dev_warn(&pdev->dev, "irq base mismatch (%d/%d)\n",
246 p->config.irq_base, p->irq[0].domain_irq);
247 }
248
249 return 0;
250err3:
251 for (; k >= 0; k--)
252 free_irq(p->irq[k - 1].requested_irq, &p->irq[k - 1]);
253
254 irq_domain_remove(p->irq_domain);
255err2:
256 iounmap(p->iomem);
257err1:
258 kfree(p);
259err0:
260 return ret;
261}
262
263static int irqc_remove(struct platform_device *pdev)
264{
265 struct irqc_priv *p = platform_get_drvdata(pdev);
266 int k;
267
268 for (k = 0; k < p->number_of_irqs; k++)
269 free_irq(p->irq[k].requested_irq, &p->irq[k]);
270
271 irq_domain_remove(p->irq_domain);
272 iounmap(p->iomem);
273 kfree(p);
274 return 0;
275}
276
277static const struct of_device_id irqc_dt_ids[] = {
278 { .compatible = "renesas,irqc", },
279 {},
280};
281MODULE_DEVICE_TABLE(of, irqc_dt_ids);
282
283static struct platform_driver irqc_device_driver = {
284 .probe = irqc_probe,
285 .remove = irqc_remove,
286 .driver = {
287 .name = "renesas_irqc",
288 .of_match_table = irqc_dt_ids,
289 .owner = THIS_MODULE,
290 }
291};
292
293static int __init irqc_init(void)
294{
295 return platform_driver_register(&irqc_device_driver);
296}
297postcore_initcall(irqc_init);
298
299static void __exit irqc_exit(void)
300{
301 platform_driver_unregister(&irqc_device_driver);
302}
303module_exit(irqc_exit);
304
305MODULE_AUTHOR("Magnus Damm");
306MODULE_DESCRIPTION("Renesas IRQC Driver");
307MODULE_LICENSE("GPL v2");
diff --git a/drivers/irqchip/irq-s3c24xx.c b/drivers/irqchip/irq-s3c24xx.c
new file mode 100644
index 000000000000..bbcc944ed94f
--- /dev/null
+++ b/drivers/irqchip/irq-s3c24xx.c
@@ -0,0 +1,1356 @@
1/*
2 * S3C24XX IRQ handling
3 *
4 * Copyright (c) 2003-2004 Simtec Electronics
5 * Ben Dooks <ben@simtec.co.uk>
6 * Copyright (c) 2012 Heiko Stuebner <heiko@sntech.de>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17*/
18
19#include <linux/init.h>
20#include <linux/slab.h>
21#include <linux/module.h>
22#include <linux/io.h>
23#include <linux/err.h>
24#include <linux/interrupt.h>
25#include <linux/ioport.h>
26#include <linux/device.h>
27#include <linux/irqdomain.h>
28#include <linux/irqchip/chained_irq.h>
29#include <linux/of.h>
30#include <linux/of_irq.h>
31#include <linux/of_address.h>
32
33#include <asm/exception.h>
34#include <asm/mach/irq.h>
35
36#include <mach/regs-irq.h>
37#include <mach/regs-gpio.h>
38
39#include <plat/cpu.h>
40#include <plat/regs-irqtype.h>
41#include <plat/pm.h>
42
43#include "irqchip.h"
44
45#define S3C_IRQTYPE_NONE 0
46#define S3C_IRQTYPE_EINT 1
47#define S3C_IRQTYPE_EDGE 2
48#define S3C_IRQTYPE_LEVEL 3
49
50struct s3c_irq_data {
51 unsigned int type;
52 unsigned long offset;
53 unsigned long parent_irq;
54
55 /* data gets filled during init */
56 struct s3c_irq_intc *intc;
57 unsigned long sub_bits;
58 struct s3c_irq_intc *sub_intc;
59};
60
61/*
62 * Sructure holding the controller data
63 * @reg_pending register holding pending irqs
64 * @reg_intpnd special register intpnd in main intc
65 * @reg_mask mask register
66 * @domain irq_domain of the controller
67 * @parent parent controller for ext and sub irqs
68 * @irqs irq-data, always s3c_irq_data[32]
69 */
70struct s3c_irq_intc {
71 void __iomem *reg_pending;
72 void __iomem *reg_intpnd;
73 void __iomem *reg_mask;
74 struct irq_domain *domain;
75 struct s3c_irq_intc *parent;
76 struct s3c_irq_data *irqs;
77};
78
79/*
80 * Array holding pointers to the global controller structs
81 * [0] ... main_intc
82 * [1] ... sub_intc
83 * [2] ... main_intc2 on s3c2416
84 */
85static struct s3c_irq_intc *s3c_intc[3];
86
87static void s3c_irq_mask(struct irq_data *data)
88{
89 struct s3c_irq_data *irq_data = irq_data_get_irq_chip_data(data);
90 struct s3c_irq_intc *intc = irq_data->intc;
91 struct s3c_irq_intc *parent_intc = intc->parent;
92 struct s3c_irq_data *parent_data;
93 unsigned long mask;
94 unsigned int irqno;
95
96 mask = __raw_readl(intc->reg_mask);
97 mask |= (1UL << irq_data->offset);
98 __raw_writel(mask, intc->reg_mask);
99
100 if (parent_intc) {
101 parent_data = &parent_intc->irqs[irq_data->parent_irq];
102
103 /* check to see if we need to mask the parent IRQ
104 * The parent_irq is always in main_intc, so the hwirq
105 * for find_mapping does not need an offset in any case.
106 */
107 if ((mask & parent_data->sub_bits) == parent_data->sub_bits) {
108 irqno = irq_find_mapping(parent_intc->domain,
109 irq_data->parent_irq);
110 s3c_irq_mask(irq_get_irq_data(irqno));
111 }
112 }
113}
114
115static void s3c_irq_unmask(struct irq_data *data)
116{
117 struct s3c_irq_data *irq_data = irq_data_get_irq_chip_data(data);
118 struct s3c_irq_intc *intc = irq_data->intc;
119 struct s3c_irq_intc *parent_intc = intc->parent;
120 unsigned long mask;
121 unsigned int irqno;
122
123 mask = __raw_readl(intc->reg_mask);
124 mask &= ~(1UL << irq_data->offset);
125 __raw_writel(mask, intc->reg_mask);
126
127 if (parent_intc) {
128 irqno = irq_find_mapping(parent_intc->domain,
129 irq_data->parent_irq);
130 s3c_irq_unmask(irq_get_irq_data(irqno));
131 }
132}
133
134static inline void s3c_irq_ack(struct irq_data *data)
135{
136 struct s3c_irq_data *irq_data = irq_data_get_irq_chip_data(data);
137 struct s3c_irq_intc *intc = irq_data->intc;
138 unsigned long bitval = 1UL << irq_data->offset;
139
140 __raw_writel(bitval, intc->reg_pending);
141 if (intc->reg_intpnd)
142 __raw_writel(bitval, intc->reg_intpnd);
143}
144
145static int s3c_irq_type(struct irq_data *data, unsigned int type)
146{
147 switch (type) {
148 case IRQ_TYPE_NONE:
149 break;
150 case IRQ_TYPE_EDGE_RISING:
151 case IRQ_TYPE_EDGE_FALLING:
152 case IRQ_TYPE_EDGE_BOTH:
153 irq_set_handler(data->irq, handle_edge_irq);
154 break;
155 case IRQ_TYPE_LEVEL_LOW:
156 case IRQ_TYPE_LEVEL_HIGH:
157 irq_set_handler(data->irq, handle_level_irq);
158 break;
159 default:
160 pr_err("No such irq type %d", type);
161 return -EINVAL;
162 }
163
164 return 0;
165}
166
167static int s3c_irqext_type_set(void __iomem *gpcon_reg,
168 void __iomem *extint_reg,
169 unsigned long gpcon_offset,
170 unsigned long extint_offset,
171 unsigned int type)
172{
173 unsigned long newvalue = 0, value;
174
175 /* Set the GPIO to external interrupt mode */
176 value = __raw_readl(gpcon_reg);
177 value = (value & ~(3 << gpcon_offset)) | (0x02 << gpcon_offset);
178 __raw_writel(value, gpcon_reg);
179
180 /* Set the external interrupt to pointed trigger type */
181 switch (type)
182 {
183 case IRQ_TYPE_NONE:
184 pr_warn("No edge setting!\n");
185 break;
186
187 case IRQ_TYPE_EDGE_RISING:
188 newvalue = S3C2410_EXTINT_RISEEDGE;
189 break;
190
191 case IRQ_TYPE_EDGE_FALLING:
192 newvalue = S3C2410_EXTINT_FALLEDGE;
193 break;
194
195 case IRQ_TYPE_EDGE_BOTH:
196 newvalue = S3C2410_EXTINT_BOTHEDGE;
197 break;
198
199 case IRQ_TYPE_LEVEL_LOW:
200 newvalue = S3C2410_EXTINT_LOWLEV;
201 break;
202
203 case IRQ_TYPE_LEVEL_HIGH:
204 newvalue = S3C2410_EXTINT_HILEV;
205 break;
206
207 default:
208 pr_err("No such irq type %d", type);
209 return -EINVAL;
210 }
211
212 value = __raw_readl(extint_reg);
213 value = (value & ~(7 << extint_offset)) | (newvalue << extint_offset);
214 __raw_writel(value, extint_reg);
215
216 return 0;
217}
218
219static int s3c_irqext_type(struct irq_data *data, unsigned int type)
220{
221 void __iomem *extint_reg;
222 void __iomem *gpcon_reg;
223 unsigned long gpcon_offset, extint_offset;
224
225 if ((data->hwirq >= 4) && (data->hwirq <= 7)) {
226 gpcon_reg = S3C2410_GPFCON;
227 extint_reg = S3C24XX_EXTINT0;
228 gpcon_offset = (data->hwirq) * 2;
229 extint_offset = (data->hwirq) * 4;
230 } else if ((data->hwirq >= 8) && (data->hwirq <= 15)) {
231 gpcon_reg = S3C2410_GPGCON;
232 extint_reg = S3C24XX_EXTINT1;
233 gpcon_offset = (data->hwirq - 8) * 2;
234 extint_offset = (data->hwirq - 8) * 4;
235 } else if ((data->hwirq >= 16) && (data->hwirq <= 23)) {
236 gpcon_reg = S3C2410_GPGCON;
237 extint_reg = S3C24XX_EXTINT2;
238 gpcon_offset = (data->hwirq - 8) * 2;
239 extint_offset = (data->hwirq - 16) * 4;
240 } else {
241 return -EINVAL;
242 }
243
244 return s3c_irqext_type_set(gpcon_reg, extint_reg, gpcon_offset,
245 extint_offset, type);
246}
247
248static int s3c_irqext0_type(struct irq_data *data, unsigned int type)
249{
250 void __iomem *extint_reg;
251 void __iomem *gpcon_reg;
252 unsigned long gpcon_offset, extint_offset;
253
254 if ((data->hwirq >= 0) && (data->hwirq <= 3)) {
255 gpcon_reg = S3C2410_GPFCON;
256 extint_reg = S3C24XX_EXTINT0;
257 gpcon_offset = (data->hwirq) * 2;
258 extint_offset = (data->hwirq) * 4;
259 } else {
260 return -EINVAL;
261 }
262
263 return s3c_irqext_type_set(gpcon_reg, extint_reg, gpcon_offset,
264 extint_offset, type);
265}
266
267static struct irq_chip s3c_irq_chip = {
268 .name = "s3c",
269 .irq_ack = s3c_irq_ack,
270 .irq_mask = s3c_irq_mask,
271 .irq_unmask = s3c_irq_unmask,
272 .irq_set_type = s3c_irq_type,
273 .irq_set_wake = s3c_irq_wake
274};
275
276static struct irq_chip s3c_irq_level_chip = {
277 .name = "s3c-level",
278 .irq_mask = s3c_irq_mask,
279 .irq_unmask = s3c_irq_unmask,
280 .irq_ack = s3c_irq_ack,
281 .irq_set_type = s3c_irq_type,
282};
283
284static struct irq_chip s3c_irqext_chip = {
285 .name = "s3c-ext",
286 .irq_mask = s3c_irq_mask,
287 .irq_unmask = s3c_irq_unmask,
288 .irq_ack = s3c_irq_ack,
289 .irq_set_type = s3c_irqext_type,
290 .irq_set_wake = s3c_irqext_wake
291};
292
293static struct irq_chip s3c_irq_eint0t4 = {
294 .name = "s3c-ext0",
295 .irq_ack = s3c_irq_ack,
296 .irq_mask = s3c_irq_mask,
297 .irq_unmask = s3c_irq_unmask,
298 .irq_set_wake = s3c_irq_wake,
299 .irq_set_type = s3c_irqext0_type,
300};
301
302static void s3c_irq_demux(unsigned int irq, struct irq_desc *desc)
303{
304 struct irq_chip *chip = irq_desc_get_chip(desc);
305 struct s3c_irq_data *irq_data = irq_desc_get_chip_data(desc);
306 struct s3c_irq_intc *intc = irq_data->intc;
307 struct s3c_irq_intc *sub_intc = irq_data->sub_intc;
308 unsigned long src;
309 unsigned long msk;
310 unsigned int n;
311 unsigned int offset;
312
313 /* we're using individual domains for the non-dt case
314 * and one big domain for the dt case where the subintc
315 * starts at hwirq number 32.
316 */
317 offset = (intc->domain->of_node) ? 32 : 0;
318
319 chained_irq_enter(chip, desc);
320
321 src = __raw_readl(sub_intc->reg_pending);
322 msk = __raw_readl(sub_intc->reg_mask);
323
324 src &= ~msk;
325 src &= irq_data->sub_bits;
326
327 while (src) {
328 n = __ffs(src);
329 src &= ~(1 << n);
330 irq = irq_find_mapping(sub_intc->domain, offset + n);
331 generic_handle_irq(irq);
332 }
333
334 chained_irq_exit(chip, desc);
335}
336
337static inline int s3c24xx_handle_intc(struct s3c_irq_intc *intc,
338 struct pt_regs *regs, int intc_offset)
339{
340 int pnd;
341 int offset;
342 int irq;
343
344 pnd = __raw_readl(intc->reg_intpnd);
345 if (!pnd)
346 return false;
347
348 /* non-dt machines use individual domains */
349 if (!intc->domain->of_node)
350 intc_offset = 0;
351
352 /* We have a problem that the INTOFFSET register does not always
353 * show one interrupt. Occasionally we get two interrupts through
354 * the prioritiser, and this causes the INTOFFSET register to show
355 * what looks like the logical-or of the two interrupt numbers.
356 *
357 * Thanks to Klaus, Shannon, et al for helping to debug this problem
358 */
359 offset = __raw_readl(intc->reg_intpnd + 4);
360
361 /* Find the bit manually, when the offset is wrong.
362 * The pending register only ever contains the one bit of the next
363 * interrupt to handle.
364 */
365 if (!(pnd & (1 << offset)))
366 offset = __ffs(pnd);
367
368 irq = irq_find_mapping(intc->domain, intc_offset + offset);
369 handle_IRQ(irq, regs);
370 return true;
371}
372
373asmlinkage void __exception_irq_entry s3c24xx_handle_irq(struct pt_regs *regs)
374{
375 do {
376 if (likely(s3c_intc[0]))
377 if (s3c24xx_handle_intc(s3c_intc[0], regs, 0))
378 continue;
379
380 if (s3c_intc[2])
381 if (s3c24xx_handle_intc(s3c_intc[2], regs, 64))
382 continue;
383
384 break;
385 } while (1);
386}
387
388#ifdef CONFIG_FIQ
389/**
390 * s3c24xx_set_fiq - set the FIQ routing
391 * @irq: IRQ number to route to FIQ on processor.
392 * @on: Whether to route @irq to the FIQ, or to remove the FIQ routing.
393 *
394 * Change the state of the IRQ to FIQ routing depending on @irq and @on. If
395 * @on is true, the @irq is checked to see if it can be routed and the
396 * interrupt controller updated to route the IRQ. If @on is false, the FIQ
397 * routing is cleared, regardless of which @irq is specified.
398 */
399int s3c24xx_set_fiq(unsigned int irq, bool on)
400{
401 u32 intmod;
402 unsigned offs;
403
404 if (on) {
405 offs = irq - FIQ_START;
406 if (offs > 31)
407 return -EINVAL;
408
409 intmod = 1 << offs;
410 } else {
411 intmod = 0;
412 }
413
414 __raw_writel(intmod, S3C2410_INTMOD);
415 return 0;
416}
417
418EXPORT_SYMBOL_GPL(s3c24xx_set_fiq);
419#endif
420
421static int s3c24xx_irq_map(struct irq_domain *h, unsigned int virq,
422 irq_hw_number_t hw)
423{
424 struct s3c_irq_intc *intc = h->host_data;
425 struct s3c_irq_data *irq_data = &intc->irqs[hw];
426 struct s3c_irq_intc *parent_intc;
427 struct s3c_irq_data *parent_irq_data;
428 unsigned int irqno;
429
430 /* attach controller pointer to irq_data */
431 irq_data->intc = intc;
432 irq_data->offset = hw;
433
434 parent_intc = intc->parent;
435
436 /* set handler and flags */
437 switch (irq_data->type) {
438 case S3C_IRQTYPE_NONE:
439 return 0;
440 case S3C_IRQTYPE_EINT:
441 /* On the S3C2412, the EINT0to3 have a parent irq
442 * but need the s3c_irq_eint0t4 chip
443 */
444 if (parent_intc && (!soc_is_s3c2412() || hw >= 4))
445 irq_set_chip_and_handler(virq, &s3c_irqext_chip,
446 handle_edge_irq);
447 else
448 irq_set_chip_and_handler(virq, &s3c_irq_eint0t4,
449 handle_edge_irq);
450 break;
451 case S3C_IRQTYPE_EDGE:
452 if (parent_intc || intc->reg_pending == S3C2416_SRCPND2)
453 irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
454 handle_edge_irq);
455 else
456 irq_set_chip_and_handler(virq, &s3c_irq_chip,
457 handle_edge_irq);
458 break;
459 case S3C_IRQTYPE_LEVEL:
460 if (parent_intc)
461 irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
462 handle_level_irq);
463 else
464 irq_set_chip_and_handler(virq, &s3c_irq_chip,
465 handle_level_irq);
466 break;
467 default:
468 pr_err("irq-s3c24xx: unsupported irqtype %d\n", irq_data->type);
469 return -EINVAL;
470 }
471
472 irq_set_chip_data(virq, irq_data);
473
474 set_irq_flags(virq, IRQF_VALID);
475
476 if (parent_intc && irq_data->type != S3C_IRQTYPE_NONE) {
477 if (irq_data->parent_irq > 31) {
478 pr_err("irq-s3c24xx: parent irq %lu is out of range\n",
479 irq_data->parent_irq);
480 goto err;
481 }
482
483 parent_irq_data = &parent_intc->irqs[irq_data->parent_irq];
484 parent_irq_data->sub_intc = intc;
485 parent_irq_data->sub_bits |= (1UL << hw);
486
487 /* attach the demuxer to the parent irq */
488 irqno = irq_find_mapping(parent_intc->domain,
489 irq_data->parent_irq);
490 if (!irqno) {
491 pr_err("irq-s3c24xx: could not find mapping for parent irq %lu\n",
492 irq_data->parent_irq);
493 goto err;
494 }
495 irq_set_chained_handler(irqno, s3c_irq_demux);
496 }
497
498 return 0;
499
500err:
501 set_irq_flags(virq, 0);
502
503 /* the only error can result from bad mapping data*/
504 return -EINVAL;
505}
506
507static struct irq_domain_ops s3c24xx_irq_ops = {
508 .map = s3c24xx_irq_map,
509 .xlate = irq_domain_xlate_twocell,
510};
511
512static void s3c24xx_clear_intc(struct s3c_irq_intc *intc)
513{
514 void __iomem *reg_source;
515 unsigned long pend;
516 unsigned long last;
517 int i;
518
519 /* if intpnd is set, read the next pending irq from there */
520 reg_source = intc->reg_intpnd ? intc->reg_intpnd : intc->reg_pending;
521
522 last = 0;
523 for (i = 0; i < 4; i++) {
524 pend = __raw_readl(reg_source);
525
526 if (pend == 0 || pend == last)
527 break;
528
529 __raw_writel(pend, intc->reg_pending);
530 if (intc->reg_intpnd)
531 __raw_writel(pend, intc->reg_intpnd);
532
533 pr_info("irq: clearing pending status %08x\n", (int)pend);
534 last = pend;
535 }
536}
537
538static struct s3c_irq_intc * __init s3c24xx_init_intc(struct device_node *np,
539 struct s3c_irq_data *irq_data,
540 struct s3c_irq_intc *parent,
541 unsigned long address)
542{
543 struct s3c_irq_intc *intc;
544 void __iomem *base = (void *)0xf6000000; /* static mapping */
545 int irq_num;
546 int irq_start;
547 int ret;
548
549 intc = kzalloc(sizeof(struct s3c_irq_intc), GFP_KERNEL);
550 if (!intc)
551 return ERR_PTR(-ENOMEM);
552
553 intc->irqs = irq_data;
554
555 if (parent)
556 intc->parent = parent;
557
558 /* select the correct data for the controller.
559 * Need to hard code the irq num start and offset
560 * to preserve the static mapping for now
561 */
562 switch (address) {
563 case 0x4a000000:
564 pr_debug("irq: found main intc\n");
565 intc->reg_pending = base;
566 intc->reg_mask = base + 0x08;
567 intc->reg_intpnd = base + 0x10;
568 irq_num = 32;
569 irq_start = S3C2410_IRQ(0);
570 break;
571 case 0x4a000018:
572 pr_debug("irq: found subintc\n");
573 intc->reg_pending = base + 0x18;
574 intc->reg_mask = base + 0x1c;
575 irq_num = 29;
576 irq_start = S3C2410_IRQSUB(0);
577 break;
578 case 0x4a000040:
579 pr_debug("irq: found intc2\n");
580 intc->reg_pending = base + 0x40;
581 intc->reg_mask = base + 0x48;
582 intc->reg_intpnd = base + 0x50;
583 irq_num = 8;
584 irq_start = S3C2416_IRQ(0);
585 break;
586 case 0x560000a4:
587 pr_debug("irq: found eintc\n");
588 base = (void *)0xfd000000;
589
590 intc->reg_mask = base + 0xa4;
591 intc->reg_pending = base + 0xa8;
592 irq_num = 24;
593 irq_start = S3C2410_IRQ(32);
594 break;
595 default:
596 pr_err("irq: unsupported controller address\n");
597 ret = -EINVAL;
598 goto err;
599 }
600
601 /* now that all the data is complete, init the irq-domain */
602 s3c24xx_clear_intc(intc);
603 intc->domain = irq_domain_add_legacy(np, irq_num, irq_start,
604 0, &s3c24xx_irq_ops,
605 intc);
606 if (!intc->domain) {
607 pr_err("irq: could not create irq-domain\n");
608 ret = -EINVAL;
609 goto err;
610 }
611
612 set_handle_irq(s3c24xx_handle_irq);
613
614 return intc;
615
616err:
617 kfree(intc);
618 return ERR_PTR(ret);
619}
620
621static struct s3c_irq_data init_eint[32] = {
622 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
623 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
624 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
625 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
626 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT4 */
627 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT5 */
628 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT6 */
629 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT7 */
630 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT8 */
631 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT9 */
632 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT10 */
633 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT11 */
634 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT12 */
635 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT13 */
636 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT14 */
637 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT15 */
638 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT16 */
639 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT17 */
640 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT18 */
641 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT19 */
642 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT20 */
643 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT21 */
644 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT22 */
645 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT23 */
646};
647
648#ifdef CONFIG_CPU_S3C2410
649static struct s3c_irq_data init_s3c2410base[32] = {
650 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
651 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
652 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
653 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
654 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
655 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
656 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
657 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
658 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
659 { .type = S3C_IRQTYPE_EDGE, }, /* WDT */
660 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
661 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
662 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
663 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
664 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
665 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
666 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
667 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
668 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
669 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
670 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
671 { .type = S3C_IRQTYPE_EDGE, }, /* SDI */
672 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
673 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
674 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
675 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
676 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
677 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
678 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
679 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
680 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
681 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
682};
683
684static struct s3c_irq_data init_s3c2410subint[32] = {
685 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
686 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
687 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
688 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
689 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
690 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
691 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
692 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
693 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
694 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
695 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
696};
697
698void __init s3c2410_init_irq(void)
699{
700#ifdef CONFIG_FIQ
701 init_FIQ(FIQ_START);
702#endif
703
704 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2410base[0], NULL,
705 0x4a000000);
706 if (IS_ERR(s3c_intc[0])) {
707 pr_err("irq: could not create main interrupt controller\n");
708 return;
709 }
710
711 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2410subint[0],
712 s3c_intc[0], 0x4a000018);
713 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
714}
715#endif
716
717#ifdef CONFIG_CPU_S3C2412
718static struct s3c_irq_data init_s3c2412base[32] = {
719 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT0 */
720 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT1 */
721 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT2 */
722 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT3 */
723 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
724 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
725 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
726 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
727 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
728 { .type = S3C_IRQTYPE_EDGE, }, /* WDT */
729 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
730 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
731 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
732 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
733 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
734 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
735 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
736 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
737 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
738 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
739 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
740 { .type = S3C_IRQTYPE_LEVEL, }, /* SDI/CF */
741 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
742 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
743 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
744 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
745 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
746 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
747 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
748 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
749 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
750 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
751};
752
753static struct s3c_irq_data init_s3c2412eint[32] = {
754 { .type = S3C_IRQTYPE_EINT, .parent_irq = 0 }, /* EINT0 */
755 { .type = S3C_IRQTYPE_EINT, .parent_irq = 1 }, /* EINT1 */
756 { .type = S3C_IRQTYPE_EINT, .parent_irq = 2 }, /* EINT2 */
757 { .type = S3C_IRQTYPE_EINT, .parent_irq = 3 }, /* EINT3 */
758 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT4 */
759 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT5 */
760 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT6 */
761 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT7 */
762 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT8 */
763 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT9 */
764 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT10 */
765 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT11 */
766 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT12 */
767 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT13 */
768 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT14 */
769 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT15 */
770 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT16 */
771 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT17 */
772 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT18 */
773 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT19 */
774 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT20 */
775 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT21 */
776 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT22 */
777 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT23 */
778};
779
780static struct s3c_irq_data init_s3c2412subint[32] = {
781 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
782 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
783 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
784 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
785 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
786 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
787 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
788 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
789 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
790 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
791 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
792 { .type = S3C_IRQTYPE_NONE, },
793 { .type = S3C_IRQTYPE_NONE, },
794 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* SDI */
795 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* CF */
796};
797
798void __init s3c2412_init_irq(void)
799{
800 pr_info("S3C2412: IRQ Support\n");
801
802#ifdef CONFIG_FIQ
803 init_FIQ(FIQ_START);
804#endif
805
806 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2412base[0], NULL,
807 0x4a000000);
808 if (IS_ERR(s3c_intc[0])) {
809 pr_err("irq: could not create main interrupt controller\n");
810 return;
811 }
812
813 s3c24xx_init_intc(NULL, &init_s3c2412eint[0], s3c_intc[0], 0x560000a4);
814 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2412subint[0],
815 s3c_intc[0], 0x4a000018);
816}
817#endif
818
819#ifdef CONFIG_CPU_S3C2416
820static struct s3c_irq_data init_s3c2416base[32] = {
821 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
822 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
823 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
824 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
825 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
826 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
827 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
828 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
829 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
830 { .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
831 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
832 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
833 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
834 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
835 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
836 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
837 { .type = S3C_IRQTYPE_LEVEL, }, /* LCD */
838 { .type = S3C_IRQTYPE_LEVEL, }, /* DMA */
839 { .type = S3C_IRQTYPE_LEVEL, }, /* UART3 */
840 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
841 { .type = S3C_IRQTYPE_EDGE, }, /* SDI1 */
842 { .type = S3C_IRQTYPE_EDGE, }, /* SDI0 */
843 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
844 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
845 { .type = S3C_IRQTYPE_EDGE, }, /* NAND */
846 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
847 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
848 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
849 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
850 { .type = S3C_IRQTYPE_NONE, },
851 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
852 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
853};
854
855static struct s3c_irq_data init_s3c2416subint[32] = {
856 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
857 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
858 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
859 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
860 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
861 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
862 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
863 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
864 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
865 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
866 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
867 { .type = S3C_IRQTYPE_NONE }, /* reserved */
868 { .type = S3C_IRQTYPE_NONE }, /* reserved */
869 { .type = S3C_IRQTYPE_NONE }, /* reserved */
870 { .type = S3C_IRQTYPE_NONE }, /* reserved */
871 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD2 */
872 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD3 */
873 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD4 */
874 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA0 */
875 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA1 */
876 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA2 */
877 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA3 */
878 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA4 */
879 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA5 */
880 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-RX */
881 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-TX */
882 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-ERR */
883 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
884 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
885};
886
887static struct s3c_irq_data init_s3c2416_second[32] = {
888 { .type = S3C_IRQTYPE_EDGE }, /* 2D */
889 { .type = S3C_IRQTYPE_NONE }, /* reserved */
890 { .type = S3C_IRQTYPE_NONE }, /* reserved */
891 { .type = S3C_IRQTYPE_NONE }, /* reserved */
892 { .type = S3C_IRQTYPE_EDGE }, /* PCM0 */
893 { .type = S3C_IRQTYPE_NONE }, /* reserved */
894 { .type = S3C_IRQTYPE_EDGE }, /* I2S0 */
895};
896
897void __init s3c2416_init_irq(void)
898{
899 pr_info("S3C2416: IRQ Support\n");
900
901#ifdef CONFIG_FIQ
902 init_FIQ(FIQ_START);
903#endif
904
905 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2416base[0], NULL,
906 0x4a000000);
907 if (IS_ERR(s3c_intc[0])) {
908 pr_err("irq: could not create main interrupt controller\n");
909 return;
910 }
911
912 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
913 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2416subint[0],
914 s3c_intc[0], 0x4a000018);
915
916 s3c_intc[2] = s3c24xx_init_intc(NULL, &init_s3c2416_second[0],
917 NULL, 0x4a000040);
918}
919
920#endif
921
922#ifdef CONFIG_CPU_S3C2440
923static struct s3c_irq_data init_s3c2440base[32] = {
924 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
925 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
926 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
927 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
928 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
929 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
930 { .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
931 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
932 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
933 { .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
934 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
935 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
936 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
937 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
938 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
939 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
940 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
941 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
942 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
943 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
944 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
945 { .type = S3C_IRQTYPE_EDGE, }, /* SDI */
946 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
947 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
948 { .type = S3C_IRQTYPE_LEVEL, }, /* NFCON */
949 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
950 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
951 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
952 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
953 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
954 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
955 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
956};
957
958static struct s3c_irq_data init_s3c2440subint[32] = {
959 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
960 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
961 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
962 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
963 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
964 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
965 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
966 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
967 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
968 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
969 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
970 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_C */
971 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_P */
972 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
973 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
974};
975
976void __init s3c2440_init_irq(void)
977{
978 pr_info("S3C2440: IRQ Support\n");
979
980#ifdef CONFIG_FIQ
981 init_FIQ(FIQ_START);
982#endif
983
984 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2440base[0], NULL,
985 0x4a000000);
986 if (IS_ERR(s3c_intc[0])) {
987 pr_err("irq: could not create main interrupt controller\n");
988 return;
989 }
990
991 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
992 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2440subint[0],
993 s3c_intc[0], 0x4a000018);
994}
995#endif
996
997#ifdef CONFIG_CPU_S3C2442
998static struct s3c_irq_data init_s3c2442base[32] = {
999 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
1000 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
1001 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
1002 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
1003 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
1004 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
1005 { .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
1006 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
1007 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
1008 { .type = S3C_IRQTYPE_EDGE, }, /* WDT */
1009 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
1010 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
1011 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
1012 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
1013 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
1014 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
1015 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
1016 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
1017 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
1018 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
1019 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
1020 { .type = S3C_IRQTYPE_EDGE, }, /* SDI */
1021 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
1022 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
1023 { .type = S3C_IRQTYPE_LEVEL, }, /* NFCON */
1024 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
1025 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
1026 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
1027 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
1028 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
1029 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
1030 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
1031};
1032
1033static struct s3c_irq_data init_s3c2442subint[32] = {
1034 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
1035 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
1036 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
1037 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
1038 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
1039 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
1040 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
1041 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
1042 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
1043 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
1044 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
1045 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_C */
1046 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_P */
1047};
1048
1049void __init s3c2442_init_irq(void)
1050{
1051 pr_info("S3C2442: IRQ Support\n");
1052
1053#ifdef CONFIG_FIQ
1054 init_FIQ(FIQ_START);
1055#endif
1056
1057 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2442base[0], NULL,
1058 0x4a000000);
1059 if (IS_ERR(s3c_intc[0])) {
1060 pr_err("irq: could not create main interrupt controller\n");
1061 return;
1062 }
1063
1064 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
1065 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2442subint[0],
1066 s3c_intc[0], 0x4a000018);
1067}
1068#endif
1069
1070#ifdef CONFIG_CPU_S3C2443
1071static struct s3c_irq_data init_s3c2443base[32] = {
1072 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
1073 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
1074 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
1075 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
1076 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
1077 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
1078 { .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
1079 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
1080 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
1081 { .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
1082 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
1083 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
1084 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
1085 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
1086 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
1087 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
1088 { .type = S3C_IRQTYPE_LEVEL, }, /* LCD */
1089 { .type = S3C_IRQTYPE_LEVEL, }, /* DMA */
1090 { .type = S3C_IRQTYPE_LEVEL, }, /* UART3 */
1091 { .type = S3C_IRQTYPE_EDGE, }, /* CFON */
1092 { .type = S3C_IRQTYPE_EDGE, }, /* SDI1 */
1093 { .type = S3C_IRQTYPE_EDGE, }, /* SDI0 */
1094 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
1095 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
1096 { .type = S3C_IRQTYPE_EDGE, }, /* NAND */
1097 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
1098 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
1099 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
1100 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
1101 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
1102 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
1103 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
1104};
1105
1106
1107static struct s3c_irq_data init_s3c2443subint[32] = {
1108 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
1109 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
1110 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
1111 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
1112 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
1113 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
1114 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
1115 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
1116 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
1117 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
1118 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
1119 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_C */
1120 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_P */
1121 { .type = S3C_IRQTYPE_NONE }, /* reserved */
1122 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD1 */
1123 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD2 */
1124 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD3 */
1125 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD4 */
1126 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA0 */
1127 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA1 */
1128 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA2 */
1129 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA3 */
1130 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA4 */
1131 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA5 */
1132 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-RX */
1133 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-TX */
1134 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-ERR */
1135 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
1136 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
1137};
1138
1139void __init s3c2443_init_irq(void)
1140{
1141 pr_info("S3C2443: IRQ Support\n");
1142
1143#ifdef CONFIG_FIQ
1144 init_FIQ(FIQ_START);
1145#endif
1146
1147 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2443base[0], NULL,
1148 0x4a000000);
1149 if (IS_ERR(s3c_intc[0])) {
1150 pr_err("irq: could not create main interrupt controller\n");
1151 return;
1152 }
1153
1154 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
1155 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2443subint[0],
1156 s3c_intc[0], 0x4a000018);
1157}
1158#endif
1159
1160#ifdef CONFIG_OF
1161static int s3c24xx_irq_map_of(struct irq_domain *h, unsigned int virq,
1162 irq_hw_number_t hw)
1163{
1164 unsigned int ctrl_num = hw / 32;
1165 unsigned int intc_hw = hw % 32;
1166 struct s3c_irq_intc *intc = s3c_intc[ctrl_num];
1167 struct s3c_irq_intc *parent_intc = intc->parent;
1168 struct s3c_irq_data *irq_data = &intc->irqs[intc_hw];
1169
1170 /* attach controller pointer to irq_data */
1171 irq_data->intc = intc;
1172 irq_data->offset = intc_hw;
1173
1174 if (!parent_intc)
1175 irq_set_chip_and_handler(virq, &s3c_irq_chip, handle_edge_irq);
1176 else
1177 irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
1178 handle_edge_irq);
1179
1180 irq_set_chip_data(virq, irq_data);
1181
1182 set_irq_flags(virq, IRQF_VALID);
1183
1184 return 0;
1185}
1186
1187/* Translate our of irq notation
1188 * format: <ctrl_num ctrl_irq parent_irq type>
1189 */
1190static int s3c24xx_irq_xlate_of(struct irq_domain *d, struct device_node *n,
1191 const u32 *intspec, unsigned int intsize,
1192 irq_hw_number_t *out_hwirq, unsigned int *out_type)
1193{
1194 struct s3c_irq_intc *intc;
1195 struct s3c_irq_intc *parent_intc;
1196 struct s3c_irq_data *irq_data;
1197 struct s3c_irq_data *parent_irq_data;
1198 int irqno;
1199
1200 if (WARN_ON(intsize < 4))
1201 return -EINVAL;
1202
1203 if (intspec[0] > 2 || !s3c_intc[intspec[0]]) {
1204 pr_err("controller number %d invalid\n", intspec[0]);
1205 return -EINVAL;
1206 }
1207 intc = s3c_intc[intspec[0]];
1208
1209 *out_hwirq = intspec[0] * 32 + intspec[2];
1210 *out_type = intspec[3] & IRQ_TYPE_SENSE_MASK;
1211
1212 parent_intc = intc->parent;
1213 if (parent_intc) {
1214 irq_data = &intc->irqs[intspec[2]];
1215 irq_data->parent_irq = intspec[1];
1216 parent_irq_data = &parent_intc->irqs[irq_data->parent_irq];
1217 parent_irq_data->sub_intc = intc;
1218 parent_irq_data->sub_bits |= (1UL << intspec[2]);
1219
1220 /* parent_intc is always s3c_intc[0], so no offset */
1221 irqno = irq_create_mapping(parent_intc->domain, intspec[1]);
1222 if (irqno < 0) {
1223 pr_err("irq: could not map parent interrupt\n");
1224 return irqno;
1225 }
1226
1227 irq_set_chained_handler(irqno, s3c_irq_demux);
1228 }
1229
1230 return 0;
1231}
1232
1233static struct irq_domain_ops s3c24xx_irq_ops_of = {
1234 .map = s3c24xx_irq_map_of,
1235 .xlate = s3c24xx_irq_xlate_of,
1236};
1237
1238struct s3c24xx_irq_of_ctrl {
1239 char *name;
1240 unsigned long offset;
1241 struct s3c_irq_intc **handle;
1242 struct s3c_irq_intc **parent;
1243 struct irq_domain_ops *ops;
1244};
1245
1246static int __init s3c_init_intc_of(struct device_node *np,
1247 struct device_node *interrupt_parent,
1248 struct s3c24xx_irq_of_ctrl *s3c_ctrl, int num_ctrl)
1249{
1250 struct s3c_irq_intc *intc;
1251 struct s3c24xx_irq_of_ctrl *ctrl;
1252 struct irq_domain *domain;
1253 void __iomem *reg_base;
1254 int i;
1255
1256 reg_base = of_iomap(np, 0);
1257 if (!reg_base) {
1258 pr_err("irq-s3c24xx: could not map irq registers\n");
1259 return -EINVAL;
1260 }
1261
1262 domain = irq_domain_add_linear(np, num_ctrl * 32,
1263 &s3c24xx_irq_ops_of, NULL);
1264 if (!domain) {
1265 pr_err("irq: could not create irq-domain\n");
1266 return -EINVAL;
1267 }
1268
1269 for (i = 0; i < num_ctrl; i++) {
1270 ctrl = &s3c_ctrl[i];
1271
1272 pr_debug("irq: found controller %s\n", ctrl->name);
1273
1274 intc = kzalloc(sizeof(struct s3c_irq_intc), GFP_KERNEL);
1275 if (!intc)
1276 return -ENOMEM;
1277
1278 intc->domain = domain;
1279 intc->irqs = kzalloc(sizeof(struct s3c_irq_data) * 32,
1280 GFP_KERNEL);
1281 if (!intc->irqs) {
1282 kfree(intc);
1283 return -ENOMEM;
1284 }
1285
1286 if (ctrl->parent) {
1287 intc->reg_pending = reg_base + ctrl->offset;
1288 intc->reg_mask = reg_base + ctrl->offset + 0x4;
1289
1290 if (*(ctrl->parent)) {
1291 intc->parent = *(ctrl->parent);
1292 } else {
1293 pr_warn("irq: parent of %s missing\n",
1294 ctrl->name);
1295 kfree(intc->irqs);
1296 kfree(intc);
1297 continue;
1298 }
1299 } else {
1300 intc->reg_pending = reg_base + ctrl->offset;
1301 intc->reg_mask = reg_base + ctrl->offset + 0x08;
1302 intc->reg_intpnd = reg_base + ctrl->offset + 0x10;
1303 }
1304
1305 s3c24xx_clear_intc(intc);
1306 s3c_intc[i] = intc;
1307 }
1308
1309 set_handle_irq(s3c24xx_handle_irq);
1310
1311 return 0;
1312}
1313
1314static struct s3c24xx_irq_of_ctrl s3c2410_ctrl[] = {
1315 {
1316 .name = "intc",
1317 .offset = 0,
1318 }, {
1319 .name = "subintc",
1320 .offset = 0x18,
1321 .parent = &s3c_intc[0],
1322 }
1323};
1324
1325int __init s3c2410_init_intc_of(struct device_node *np,
1326 struct device_node *interrupt_parent,
1327 struct s3c24xx_irq_of_ctrl *ctrl, int num_ctrl)
1328{
1329 return s3c_init_intc_of(np, interrupt_parent,
1330 s3c2410_ctrl, ARRAY_SIZE(s3c2410_ctrl));
1331}
1332IRQCHIP_DECLARE(s3c2410_irq, "samsung,s3c2410-irq", s3c2410_init_intc_of);
1333
1334static struct s3c24xx_irq_of_ctrl s3c2416_ctrl[] = {
1335 {
1336 .name = "intc",
1337 .offset = 0,
1338 }, {
1339 .name = "subintc",
1340 .offset = 0x18,
1341 .parent = &s3c_intc[0],
1342 }, {
1343 .name = "intc2",
1344 .offset = 0x40,
1345 }
1346};
1347
1348int __init s3c2416_init_intc_of(struct device_node *np,
1349 struct device_node *interrupt_parent,
1350 struct s3c24xx_irq_of_ctrl *ctrl, int num_ctrl)
1351{
1352 return s3c_init_intc_of(np, interrupt_parent,
1353 s3c2416_ctrl, ARRAY_SIZE(s3c2416_ctrl));
1354}
1355IRQCHIP_DECLARE(s3c2416_irq, "samsung,s3c2416-irq", s3c2416_init_intc_of);
1356#endif
diff --git a/drivers/irqchip/irq-vt8500.c b/drivers/irqchip/irq-vt8500.c
new file mode 100644
index 000000000000..d97059550a2c
--- /dev/null
+++ b/drivers/irqchip/irq-vt8500.c
@@ -0,0 +1,259 @@
1/*
2 * arch/arm/mach-vt8500/irq.c
3 *
4 * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
5 * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22/*
23 * This file is copied and modified from the original irq.c provided by
24 * Alexey Charkov. Minor changes have been made for Device Tree Support.
25 */
26
27#include <linux/slab.h>
28#include <linux/io.h>
29#include <linux/irq.h>
30#include <linux/irqdomain.h>
31#include <linux/interrupt.h>
32#include <linux/bitops.h>
33
34#include <linux/of.h>
35#include <linux/of_irq.h>
36#include <linux/of_address.h>
37
38#include <asm/irq.h>
39#include <asm/exception.h>
40#include <asm/mach/irq.h>
41
42#include "irqchip.h"
43
44#define VT8500_ICPC_IRQ 0x20
45#define VT8500_ICPC_FIQ 0x24
46#define VT8500_ICDC 0x40 /* Destination Control 64*u32 */
47#define VT8500_ICIS 0x80 /* Interrupt status, 16*u32 */
48
49/* ICPC */
50#define ICPC_MASK 0x3F
51#define ICPC_ROTATE BIT(6)
52
53/* IC_DCTR */
54#define ICDC_IRQ 0x00
55#define ICDC_FIQ 0x01
56#define ICDC_DSS0 0x02
57#define ICDC_DSS1 0x03
58#define ICDC_DSS2 0x04
59#define ICDC_DSS3 0x05
60#define ICDC_DSS4 0x06
61#define ICDC_DSS5 0x07
62
63#define VT8500_INT_DISABLE 0
64#define VT8500_INT_ENABLE BIT(3)
65
66#define VT8500_TRIGGER_HIGH 0
67#define VT8500_TRIGGER_RISING BIT(5)
68#define VT8500_TRIGGER_FALLING BIT(6)
69#define VT8500_EDGE ( VT8500_TRIGGER_RISING \
70 | VT8500_TRIGGER_FALLING)
71
72/* vt8500 has 1 intc, wm8505 and wm8650 have 2 */
73#define VT8500_INTC_MAX 2
74
75struct vt8500_irq_data {
76 void __iomem *base; /* IO Memory base address */
77 struct irq_domain *domain; /* Domain for this controller */
78};
79
80/* Global variable for accessing io-mem addresses */
81static struct vt8500_irq_data intc[VT8500_INTC_MAX];
82static u32 active_cnt = 0;
83
84static void vt8500_irq_mask(struct irq_data *d)
85{
86 struct vt8500_irq_data *priv = d->domain->host_data;
87 void __iomem *base = priv->base;
88 void __iomem *stat_reg = base + VT8500_ICIS + (d->hwirq < 32 ? 0 : 4);
89 u8 edge, dctr;
90 u32 status;
91
92 edge = readb(base + VT8500_ICDC + d->hwirq) & VT8500_EDGE;
93 if (edge) {
94 status = readl(stat_reg);
95
96 status |= (1 << (d->hwirq & 0x1f));
97 writel(status, stat_reg);
98 } else {
99 dctr = readb(base + VT8500_ICDC + d->hwirq);
100 dctr &= ~VT8500_INT_ENABLE;
101 writeb(dctr, base + VT8500_ICDC + d->hwirq);
102 }
103}
104
105static void vt8500_irq_unmask(struct irq_data *d)
106{
107 struct vt8500_irq_data *priv = d->domain->host_data;
108 void __iomem *base = priv->base;
109 u8 dctr;
110
111 dctr = readb(base + VT8500_ICDC + d->hwirq);
112 dctr |= VT8500_INT_ENABLE;
113 writeb(dctr, base + VT8500_ICDC + d->hwirq);
114}
115
116static int vt8500_irq_set_type(struct irq_data *d, unsigned int flow_type)
117{
118 struct vt8500_irq_data *priv = d->domain->host_data;
119 void __iomem *base = priv->base;
120 u8 dctr;
121
122 dctr = readb(base + VT8500_ICDC + d->hwirq);
123 dctr &= ~VT8500_EDGE;
124
125 switch (flow_type) {
126 case IRQF_TRIGGER_LOW:
127 return -EINVAL;
128 case IRQF_TRIGGER_HIGH:
129 dctr |= VT8500_TRIGGER_HIGH;
130 __irq_set_handler_locked(d->irq, handle_level_irq);
131 break;
132 case IRQF_TRIGGER_FALLING:
133 dctr |= VT8500_TRIGGER_FALLING;
134 __irq_set_handler_locked(d->irq, handle_edge_irq);
135 break;
136 case IRQF_TRIGGER_RISING:
137 dctr |= VT8500_TRIGGER_RISING;
138 __irq_set_handler_locked(d->irq, handle_edge_irq);
139 break;
140 }
141 writeb(dctr, base + VT8500_ICDC + d->hwirq);
142
143 return 0;
144}
145
146static struct irq_chip vt8500_irq_chip = {
147 .name = "vt8500",
148 .irq_ack = vt8500_irq_mask,
149 .irq_mask = vt8500_irq_mask,
150 .irq_unmask = vt8500_irq_unmask,
151 .irq_set_type = vt8500_irq_set_type,
152};
153
154static void __init vt8500_init_irq_hw(void __iomem *base)
155{
156 u32 i;
157
158 /* Enable rotating priority for IRQ */
159 writel(ICPC_ROTATE, base + VT8500_ICPC_IRQ);
160 writel(0x00, base + VT8500_ICPC_FIQ);
161
162 /* Disable all interrupts and route them to IRQ */
163 for (i = 0; i < 64; i++)
164 writeb(VT8500_INT_DISABLE | ICDC_IRQ, base + VT8500_ICDC + i);
165}
166
167static int vt8500_irq_map(struct irq_domain *h, unsigned int virq,
168 irq_hw_number_t hw)
169{
170 irq_set_chip_and_handler(virq, &vt8500_irq_chip, handle_level_irq);
171 set_irq_flags(virq, IRQF_VALID);
172
173 return 0;
174}
175
176static struct irq_domain_ops vt8500_irq_domain_ops = {
177 .map = vt8500_irq_map,
178 .xlate = irq_domain_xlate_onecell,
179};
180
181asmlinkage void __exception_irq_entry vt8500_handle_irq(struct pt_regs *regs)
182{
183 u32 stat, i;
184 int irqnr, virq;
185 void __iomem *base;
186
187 /* Loop through each active controller */
188 for (i=0; i<active_cnt; i++) {
189 base = intc[i].base;
190 irqnr = readl_relaxed(base) & 0x3F;
191 /*
192 Highest Priority register default = 63, so check that this
193 is a real interrupt by checking the status register
194 */
195 if (irqnr == 63) {
196 stat = readl_relaxed(base + VT8500_ICIS + 4);
197 if (!(stat & BIT(31)))
198 continue;
199 }
200
201 virq = irq_find_mapping(intc[i].domain, irqnr);
202 handle_IRQ(virq, regs);
203 }
204}
205
206int __init vt8500_irq_init(struct device_node *node, struct device_node *parent)
207{
208 int irq, i;
209 struct device_node *np = node;
210
211 if (active_cnt == VT8500_INTC_MAX) {
212 pr_err("%s: Interrupt controllers > VT8500_INTC_MAX\n",
213 __func__);
214 goto out;
215 }
216
217 intc[active_cnt].base = of_iomap(np, 0);
218 intc[active_cnt].domain = irq_domain_add_linear(node, 64,
219 &vt8500_irq_domain_ops, &intc[active_cnt]);
220
221 if (!intc[active_cnt].base) {
222 pr_err("%s: Unable to map IO memory\n", __func__);
223 goto out;
224 }
225
226 if (!intc[active_cnt].domain) {
227 pr_err("%s: Unable to add irq domain!\n", __func__);
228 goto out;
229 }
230
231 set_handle_irq(vt8500_handle_irq);
232
233 vt8500_init_irq_hw(intc[active_cnt].base);
234
235 pr_info("vt8500-irq: Added interrupt controller\n");
236
237 active_cnt++;
238
239 /* check if this is a slaved controller */
240 if (of_irq_count(np) != 0) {
241 /* check that we have the correct number of interrupts */
242 if (of_irq_count(np) != 8) {
243 pr_err("%s: Incorrect IRQ map for slaved controller\n",
244 __func__);
245 return -EINVAL;
246 }
247
248 for (i = 0; i < 8; i++) {
249 irq = irq_of_parse_and_map(np, i);
250 enable_irq(irq);
251 }
252
253 pr_info("vt8500-irq: Enabled slave->parent interrupts\n");
254 }
255out:
256 return 0;
257}
258
259IRQCHIP_DECLARE(vt8500_irq, "via,vt8500-intc", vt8500_irq_init);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 19:51:41 -0500