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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/plat-s3c24xx/s3c244x-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/plat-s3c24xx/s3c244x-irq.c')
-rw-r--r--arch/arm/plat-s3c24xx/s3c244x-irq.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c24xx/s3c244x-irq.c b/arch/arm/plat-s3c24xx/s3c244x-irq.c
new file mode 100644
index 000000000000..a0e39d894014
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/s3c244x-irq.c
@@ -0,0 +1,146 @@
1/* linux/arch/arm/plat-s3c24xx/s3c244x-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/* camera irq */
43
44static void s3c_irq_demux_cam(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 >>= 11;
58 subsrc &= 3;
59
60 if (subsrc != 0) {
61 if (subsrc & 1) {
62 mydesc = irq_desc + IRQ_S3C2440_CAM_C;
63 desc_handle_irq(IRQ_S3C2440_CAM_C, mydesc);
64 }
65 if (subsrc & 2) {
66 mydesc = irq_desc + IRQ_S3C2440_CAM_P;
67 desc_handle_irq(IRQ_S3C2440_CAM_P, mydesc);
68 }
69 }
70}
71
72#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0))
73
74static void
75s3c_irq_cam_mask(unsigned int irqno)
76{
77 s3c_irqsub_mask(irqno, INTMSK_CAM, 3<<11);
78}
79
80static void
81s3c_irq_cam_unmask(unsigned int irqno)
82{
83 s3c_irqsub_unmask(irqno, INTMSK_CAM);
84}
85
86static void
87s3c_irq_cam_ack(unsigned int irqno)
88{
89 s3c_irqsub_maskack(irqno, INTMSK_CAM, 3<<11);
90}
91
92static struct irq_chip s3c_irq_cam = {
93 .mask = s3c_irq_cam_mask,
94 .unmask = s3c_irq_cam_unmask,
95 .ack = s3c_irq_cam_ack,
96};
97
98static int s3c244x_irq_add(struct sys_device *sysdev)
99{
100 unsigned int irqno;
101
102 set_irq_chip(IRQ_NFCON, &s3c_irq_level_chip);
103 set_irq_handler(IRQ_NFCON, handle_level_irq);
104 set_irq_flags(IRQ_NFCON, IRQF_VALID);
105
106 /* add chained handler for camera */
107
108 set_irq_chip(IRQ_CAM, &s3c_irq_level_chip);
109 set_irq_handler(IRQ_CAM, handle_level_irq);
110 set_irq_chained_handler(IRQ_CAM, s3c_irq_demux_cam);
111
112 for (irqno = IRQ_S3C2440_CAM_C; irqno <= IRQ_S3C2440_CAM_P; irqno++) {
113 set_irq_chip(irqno, &s3c_irq_cam);
114 set_irq_handler(irqno, handle_level_irq);
115 set_irq_flags(irqno, IRQF_VALID);
116 }
117
118 return 0;
119}
120
121static struct sysdev_driver s3c2440_irq_driver = {
122 .add = s3c244x_irq_add,
123 .suspend = s3c24xx_irq_suspend,
124 .resume = s3c24xx_irq_resume,
125};
126
127static int s3c2440_irq_init(void)
128{
129 return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_irq_driver);
130}
131
132arch_initcall(s3c2440_irq_init);
133
134static struct sysdev_driver s3c2442_irq_driver = {
135 .add = s3c244x_irq_add,
136 .suspend = s3c24xx_irq_suspend,
137 .resume = s3c24xx_irq_resume,
138};
139
140
141static int s3c2442_irq_init(void)
142{
143 return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_irq_driver);
144}
145
146arch_initcall(s3c2442_irq_init);