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authorBen Dooks <ben-linux@fluff.org>2007-02-11 12:31:01 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-02-11 12:36:09 -0500
commita21765a70ec06be175d3997320a83fa66fcc8955 (patch)
tree24bdbf437a9bd5b7c1af05898f5aa25dccf67fe9 /arch/arm/mach-s3c2440/irq.c
parentd19494b187b20e363f9b434b9ceab4159ac88324 (diff)
[ARM] 4157/2: S3C24XX: move arch/arch/mach-s3c2410 into cpu components
The following patch and script moves the arch/arm/mach-s3c2410 directory into arch/arm/plat-s3c24xx for the generic core code and inti arch/arm/mach-s3c{cpu} for the cpu/machine support files Include directory include/asm-arm/plat-s3c24xx is added for the core include files. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-s3c2440/irq.c')
-rw-r--r--arch/arm/mach-s3c2440/irq.c130
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2440/irq.c b/arch/arm/mach-s3c2440/irq.c
new file mode 100644
index 000000000000..1069d13d8c57
--- /dev/null
+++ b/arch/arm/mach-s3c2440/irq.c
@@ -0,0 +1,130 @@
1/* linux/arch/arm/mach-s3c2440/irq.c
2 *
3 * Copyright (c) 2003,2004 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
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, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20*/
21
22#include <linux/init.h>
23#include <linux/module.h>
24#include <linux/interrupt.h>
25#include <linux/ioport.h>
26#include <linux/ptrace.h>
27#include <linux/sysdev.h>
28
29#include <asm/hardware.h>
30#include <asm/irq.h>
31#include <asm/io.h>
32
33#include <asm/mach/irq.h>
34
35#include <asm/arch/regs-irq.h>
36#include <asm/arch/regs-gpio.h>
37
38#include <asm/plat-s3c24xx/cpu.h>
39#include <asm/plat-s3c24xx/pm.h>
40#include <asm/plat-s3c24xx/irq.h>
41
42/* WDT/AC97 */
43
44static void s3c_irq_demux_wdtac97(unsigned int irq,
45 struct irq_desc *desc)
46{
47 unsigned int subsrc, submsk;
48 struct irq_desc *mydesc;
49
50 /* read the current pending interrupts, and the mask
51 * for what it is available */
52
53 subsrc = __raw_readl(S3C2410_SUBSRCPND);
54 submsk = __raw_readl(S3C2410_INTSUBMSK);
55
56 subsrc &= ~submsk;
57 subsrc >>= 13;
58 subsrc &= 3;
59
60 if (subsrc != 0) {
61 if (subsrc & 1) {
62 mydesc = irq_desc + IRQ_S3C2440_WDT;
63 desc_handle_irq(IRQ_S3C2440_WDT, mydesc);
64 }
65 if (subsrc & 2) {
66 mydesc = irq_desc + IRQ_S3C2440_AC97;
67 desc_handle_irq(IRQ_S3C2440_AC97, mydesc);
68 }
69 }
70}
71
72
73#define INTMSK_WDT (1UL << (IRQ_WDT - IRQ_EINT0))
74
75static void
76s3c_irq_wdtac97_mask(unsigned int irqno)
77{
78 s3c_irqsub_mask(irqno, INTMSK_WDT, 3<<13);
79}
80
81static void
82s3c_irq_wdtac97_unmask(unsigned int irqno)
83{
84 s3c_irqsub_unmask(irqno, INTMSK_WDT);
85}
86
87static void
88s3c_irq_wdtac97_ack(unsigned int irqno)
89{
90 s3c_irqsub_maskack(irqno, INTMSK_WDT, 3<<13);
91}
92
93static struct irq_chip s3c_irq_wdtac97 = {
94 .mask = s3c_irq_wdtac97_mask,
95 .unmask = s3c_irq_wdtac97_unmask,
96 .ack = s3c_irq_wdtac97_ack,
97};
98
99static int s3c2440_irq_add(struct sys_device *sysdev)
100{
101 unsigned int irqno;
102
103 printk("S3C2440: IRQ Support\n");
104
105 /* add new chained handler for wdt, ac7 */
106
107 set_irq_chip(IRQ_WDT, &s3c_irq_level_chip);
108 set_irq_handler(IRQ_WDT, handle_level_irq);
109 set_irq_chained_handler(IRQ_WDT, s3c_irq_demux_wdtac97);
110
111 for (irqno = IRQ_S3C2440_WDT; irqno <= IRQ_S3C2440_AC97; irqno++) {
112 set_irq_chip(irqno, &s3c_irq_wdtac97);
113 set_irq_handler(irqno, handle_level_irq);
114 set_irq_flags(irqno, IRQF_VALID);
115 }
116
117 return 0;
118}
119
120static struct sysdev_driver s3c2440_irq_driver = {
121 .add = s3c2440_irq_add,
122};
123
124static int s3c2440_irq_init(void)
125{
126 return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_irq_driver);
127}
128
129arch_initcall(s3c2440_irq_init);
130