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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-mmp/irq-pxa168.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-mmp/irq-pxa168.c')
-rw-r--r-- | arch/arm/mach-mmp/irq-pxa168.c | 54 |
1 files changed, 54 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 00000000..89706a0d --- /dev/null +++ b/arch/arm/mach-mmp/irq-pxa168.c @@ -0,0 +1,54 @@ +/* + * 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(struct irq_data *d) +{ + __raw_writel(PRIORITY_NONE, ICU_INT_CONF(d->irq)); +} + +static void icu_unmask_irq(struct irq_data *d) +{ + __raw_writel(IRQ_ROUTE_TO_AP | PRIORITY_DEFAULT, ICU_INT_CONF(d->irq)); +} + +static struct irq_chip icu_irq_chip = { + .name = "icu_irq", + .irq_ack = icu_mask_irq, + .irq_mask = icu_mask_irq, + .irq_unmask = icu_unmask_irq, +}; + +void __init icu_init_irq(void) +{ + int irq; + + for (irq = 0; irq < 64; irq++) { + icu_mask_irq(irq_get_irq_data(irq)); + irq_set_chip_and_handler(irq, &icu_irq_chip, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } +} |