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author | Eric Miao <eric.y.miao@gmail.com> | 2010-01-05 15:06:37 +0800 |
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committer | Eric Miao <eric.y.miao@gmail.com> | 2010-03-02 07:40:54 +0800 |
commit | 978da5bcdb33f6e030fa3304662e2455a018f1b0 (patch) | |
tree | f1c64a707f1d7dc08ca3c416052ffaa4c937a2f2 /arch/arm/mach-mmp/irq-pxa168.c | |
parent | e6dac5e1b6ea7be4b0092ae0ac96b352a8c028db (diff) | |
download | op-kernel-dev-978da5bcdb33f6e030fa3304662e2455a018f1b0.zip op-kernel-dev-978da5bcdb33f6e030fa3304662e2455a018f1b0.tar.gz |
[ARM] mmp: rename irq.c to irq-pxa168.c to allow other SoC IRQ chips
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-mmp/irq-pxa168.c')
-rw-r--r-- | arch/arm/mach-mmp/irq-pxa168.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/arm/mach-mmp/irq-pxa168.c b/arch/arm/mach-mmp/irq-pxa168.c new file mode 100644 index 0000000..52ff2f0 --- /dev/null +++ b/arch/arm/mach-mmp/irq-pxa168.c @@ -0,0 +1,55 @@ +/* + * linux/arch/arm/mach-mmp/irq.c + * + * Generic IRQ handling, GPIO IRQ demultiplexing, etc. + * + * Author: Bin Yang <bin.yang@marvell.com> + * Created: Sep 30, 2008 + * Copyright: Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/io.h> + +#include <mach/regs-icu.h> + +#include "common.h" + +#define IRQ_ROUTE_TO_AP (ICU_INT_CONF_AP_INT | ICU_INT_CONF_IRQ) + +#define PRIORITY_DEFAULT 0x1 +#define PRIORITY_NONE 0x0 /* means IRQ disabled */ + +static void icu_mask_irq(unsigned int irq) +{ + __raw_writel(PRIORITY_NONE, ICU_INT_CONF(irq)); +} + +static void icu_unmask_irq(unsigned int irq) +{ + __raw_writel(IRQ_ROUTE_TO_AP | PRIORITY_DEFAULT, ICU_INT_CONF(irq)); +} + +static struct irq_chip icu_irq_chip = { + .name = "icu_irq", + .ack = icu_mask_irq, + .mask = icu_mask_irq, + .unmask = icu_unmask_irq, +}; + +void __init icu_init_irq(void) +{ + int irq; + + for (irq = 0; irq < 64; irq++) { + icu_mask_irq(irq); + set_irq_chip(irq, &icu_irq_chip); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } +} |