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Diffstat (limited to 'arch/arm/mach-s5p64x0/irq-eint.c')
-rw-r--r--arch/arm/mach-s5p64x0/irq-eint.c155
1 files changed, 0 insertions, 155 deletions
diff --git a/arch/arm/mach-s5p64x0/irq-eint.c b/arch/arm/mach-s5p64x0/irq-eint.c
deleted file mode 100644
index 275dc74f4a7..00000000000
--- a/arch/arm/mach-s5p64x0/irq-eint.c
+++ /dev/null
@@ -1,155 +0,0 @@
1/* arch/arm/mach-s5p64x0/irq-eint.c
2 *
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd
4 * http://www.samsung.com/
5 *
6 * Based on linux/arch/arm/mach-s3c64xx/irq-eint.c
7 *
8 * S5P64X0 - Interrupt handling for External Interrupts.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15#include <linux/kernel.h>
16#include <linux/gpio.h>
17#include <linux/irq.h>
18#include <linux/io.h>
19
20#include <plat/cpu.h>
21#include <plat/regs-irqtype.h>
22#include <plat/gpio-cfg.h>
23#include <plat/pm.h>
24
25#include <mach/regs-gpio.h>
26#include <mach/regs-clock.h>
27
28#define eint_offset(irq) ((irq) - IRQ_EINT(0))
29
30static int s5p64x0_irq_eint_set_type(struct irq_data *data, unsigned int type)
31{
32 int offs = eint_offset(data->irq);
33 int shift;
34 u32 ctrl, mask;
35 u32 newvalue = 0;
36
37 if (offs > 15)
38 return -EINVAL;
39
40 switch (type) {
41 case IRQ_TYPE_NONE:
42 printk(KERN_WARNING "No edge setting!\n");
43 break;
44 case IRQ_TYPE_EDGE_RISING:
45 newvalue = S3C2410_EXTINT_RISEEDGE;
46 break;
47 case IRQ_TYPE_EDGE_FALLING:
48 newvalue = S3C2410_EXTINT_FALLEDGE;
49 break;
50 case IRQ_TYPE_EDGE_BOTH:
51 newvalue = S3C2410_EXTINT_BOTHEDGE;
52 break;
53 case IRQ_TYPE_LEVEL_LOW:
54 newvalue = S3C2410_EXTINT_LOWLEV;
55 break;
56 case IRQ_TYPE_LEVEL_HIGH:
57 newvalue = S3C2410_EXTINT_HILEV;
58 break;
59 default:
60 printk(KERN_ERR "No such irq type %d", type);
61 return -EINVAL;
62 }
63
64 shift = (offs / 2) * 4;
65 mask = 0x7 << shift;
66
67 ctrl = __raw_readl(S5P64X0_EINT0CON0) & ~mask;
68 ctrl |= newvalue << shift;
69 __raw_writel(ctrl, S5P64X0_EINT0CON0);
70
71 /* Configure the GPIO pin for 6450 or 6440 based on CPU ID */
72 if (soc_is_s5p6450())
73 s3c_gpio_cfgpin(S5P6450_GPN(offs), S3C_GPIO_SFN(2));
74 else
75 s3c_gpio_cfgpin(S5P6440_GPN(offs), S3C_GPIO_SFN(2));
76
77 return 0;
78}
79
80/*
81 * s5p64x0_irq_demux_eint
82 *
83 * This function demuxes the IRQ from the group0 external interrupts,
84 * from IRQ_EINT(0) to IRQ_EINT(15). It is designed to be inlined into
85 * the specific handlers s5p64x0_irq_demux_eintX_Y.
86 */
87static inline void s5p64x0_irq_demux_eint(unsigned int start, unsigned int end)
88{
89 u32 status = __raw_readl(S5P64X0_EINT0PEND);
90 u32 mask = __raw_readl(S5P64X0_EINT0MASK);
91 unsigned int irq;
92
93 status &= ~mask;
94 status >>= start;
95 status &= (1 << (end - start + 1)) - 1;
96
97 for (irq = IRQ_EINT(start); irq <= IRQ_EINT(end); irq++) {
98 if (status & 1)
99 generic_handle_irq(irq);
100 status >>= 1;
101 }
102}
103
104static void s5p64x0_irq_demux_eint0_3(unsigned int irq, struct irq_desc *desc)
105{
106 s5p64x0_irq_demux_eint(0, 3);
107}
108
109static void s5p64x0_irq_demux_eint4_11(unsigned int irq, struct irq_desc *desc)
110{
111 s5p64x0_irq_demux_eint(4, 11);
112}
113
114static void s5p64x0_irq_demux_eint12_15(unsigned int irq,
115 struct irq_desc *desc)
116{
117 s5p64x0_irq_demux_eint(12, 15);
118}
119
120static int s5p64x0_alloc_gc(void)
121{
122 struct irq_chip_generic *gc;
123 struct irq_chip_type *ct;
124
125 gc = irq_alloc_generic_chip("s5p64x0-eint", 1, S5P_IRQ_EINT_BASE,
126 S5P_VA_GPIO, handle_level_irq);
127 if (!gc) {
128 printk(KERN_ERR "%s: irq_alloc_generic_chip for group 0"
129 "external interrupts failed\n", __func__);
130 return -EINVAL;
131 }
132
133 ct = gc->chip_types;
134 ct->chip.irq_ack = irq_gc_ack_set_bit;
135 ct->chip.irq_mask = irq_gc_mask_set_bit;
136 ct->chip.irq_unmask = irq_gc_mask_clr_bit;
137 ct->chip.irq_set_type = s5p64x0_irq_eint_set_type;
138 ct->chip.irq_set_wake = s3c_irqext_wake;
139 ct->regs.ack = EINT0PEND_OFFSET;
140 ct->regs.mask = EINT0MASK_OFFSET;
141 irq_setup_generic_chip(gc, IRQ_MSK(16), IRQ_GC_INIT_MASK_CACHE,
142 IRQ_NOREQUEST | IRQ_NOPROBE, 0);
143 return 0;
144}
145
146static int __init s5p64x0_init_irq_eint(void)
147{
148 int ret = s5p64x0_alloc_gc();
149 irq_set_chained_handler(IRQ_EINT0_3, s5p64x0_irq_demux_eint0_3);
150 irq_set_chained_handler(IRQ_EINT4_11, s5p64x0_irq_demux_eint4_11);
151 irq_set_chained_handler(IRQ_EINT12_15, s5p64x0_irq_demux_eint12_15);
152
153 return ret;
154}
155arch_initcall(s5p64x0_init_irq_eint);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-08 09:36:13 -0500