diff options
| author | wanzongshun <mcuos.com@gmail.com> | 2009-12-31 09:06:05 -0500 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-01-27 17:03:00 -0500 |
| commit | a62e90308f7b6965310cf4ec61393aef6861f50d (patch) | |
| tree | 3370d9bdd43f2f75607ad59f921adafbecf537a7 /arch/arm/mach-nuc93x/irq.c | |
| parent | 74d2e4f8d79ae0c4b6ec027958d5b18058662eea (diff) | |
ARM: 5859/1: Add nuc93x platform support
The previous nuc932 support patches have been discarded by me and because it belongs to
another SoCs series named nuc93x,at present, which included nuc931 and nuc932, I think it is
better to create a new mach-nuc93x,So I made the patch,and request your advice.Thanks!
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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 | } | ||