diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-03-08 15:21:04 -0500 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-03-08 15:21:04 -0500 |
commit | 988addf82e4c03739375279de73929580a2d4a6a (patch) | |
tree | 989ae1cd4e264bbad80c65f04480486246e7b9f3 /arch/arm/mach-nuc93x/irq.c | |
parent | 004c1c7096659d352b83047a7593e91d8a30e3c5 (diff) | |
parent | 25cf84cf377c0aae5dbcf937ea89bc7893db5176 (diff) |
Merge branch 'origin' into devel-stable
Conflicts:
arch/arm/mach-mx2/devices.c
arch/arm/mach-mx2/devices.h
sound/soc/pxa/pxa-ssp.c
Diffstat (limited to 'arch/arm/mach-nuc93x/irq.c')
-rw-r--r-- | arch/arm/mach-nuc93x/irq.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/mach-nuc93x/irq.c b/arch/arm/mach-nuc93x/irq.c new file mode 100644 index 000000000000..a7a88ea4ec31 --- /dev/null +++ b/arch/arm/mach-nuc93x/irq.c | |||
@@ -0,0 +1,66 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mach-nuc93x/irq.c | ||
3 | * | ||
4 | * Copyright (c) 2008 Nuvoton technology corporation. | ||
5 | * | ||
6 | * Wan ZongShun <mcuos.com@gmail.com> | ||
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;version 2 of the License. | ||
11 | * | ||
12 | */ | ||
13 | |||
14 | #include <linux/init.h> | ||
15 | #include <linux/module.h> | ||
16 | #include <linux/interrupt.h> | ||
17 | #include <linux/ioport.h> | ||
18 | #include <linux/ptrace.h> | ||
19 | #include <linux/sysdev.h> | ||
20 | #include <linux/io.h> | ||
21 | |||
22 | #include <asm/irq.h> | ||
23 | #include <asm/mach/irq.h> | ||
24 | |||
25 | #include <mach/hardware.h> | ||
26 | #include <mach/regs-irq.h> | ||
27 | |||
28 | static void nuc93x_irq_mask(unsigned int irq) | ||
29 | { | ||
30 | __raw_writel(1 << irq, REG_AIC_MDCR); | ||
31 | } | ||
32 | |||
33 | /* | ||
34 | * By the w90p910 spec,any irq,only write 1 | ||
35 | * to REG_AIC_EOSCR for ACK | ||
36 | */ | ||
37 | |||
38 | static void nuc93x_irq_ack(unsigned int irq) | ||
39 | { | ||
40 | __raw_writel(0x01, REG_AIC_EOSCR); | ||
41 | } | ||
42 | |||
43 | static void nuc93x_irq_unmask(unsigned int irq) | ||
44 | { | ||
45 | __raw_writel(1 << irq, REG_AIC_MECR); | ||
46 | |||
47 | } | ||
48 | |||
49 | static struct irq_chip nuc93x_irq_chip = { | ||
50 | .ack = nuc93x_irq_ack, | ||
51 | .mask = nuc93x_irq_mask, | ||
52 | .unmask = nuc93x_irq_unmask, | ||
53 | }; | ||
54 | |||
55 | void __init nuc93x_init_irq(void) | ||
56 | { | ||
57 | int irqno; | ||
58 | |||
59 | __raw_writel(0xFFFFFFFE, REG_AIC_MDCR); | ||
60 | |||
61 | for (irqno = IRQ_WDT; irqno <= NR_IRQS; irqno++) { | ||
62 | set_irq_chip(irqno, &nuc93x_irq_chip); | ||
63 | set_irq_handler(irqno, handle_level_irq); | ||
64 | set_irq_flags(irqno, IRQF_VALID); | ||
65 | } | ||
66 | } | ||