diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-30 17:36:49 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-30 17:36:49 -0800 |
commit | 14a3c4ab0e58d143c7928c9eb2f2610205e13bf2 (patch) | |
tree | 885992999d7a1a2fd3586efcf32ebcbcbc3a72aa /arch/arm/mach-w90x900/irq.c | |
parent | 1af237a099a3b8ff56aa384f605c6a68af7bf288 (diff) | |
parent | 47992cbdaef2f18a47871b2ed01ad27f568c8b73 (diff) |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (407 commits)
[ARM] pxafb: add support for overlay1 and overlay2 as framebuffer devices
[ARM] pxafb: cleanup of the timing checking code
[ARM] pxafb: cleanup of the color format manipulation code
[ARM] pxafb: add palette format support for LCCR4_PAL_FOR_3
[ARM] pxafb: add support for FBIOPAN_DISPLAY by dma braching
[ARM] pxafb: allow pxafb_set_par() to start from arbitrary yoffset
[ARM] pxafb: allow video memory size to be configurable
[ARM] pxa: add document on the MFP design and how to use it
[ARM] sa1100_wdt: don't assume CLOCK_TICK_RATE to be a constant
[ARM] rtc-sa1100: don't assume CLOCK_TICK_RATE to be a constant
[ARM] pxa/tavorevb: update board support (smartpanel LCD + keypad)
[ARM] pxa: Update eseries defconfig
[ARM] 5352/1: add w90p910-plat config file
[ARM] s3c: S3C options should depend on PLAT_S3C
[ARM] mv78xx0: implement GPIO and GPIO interrupt support
[ARM] Kirkwood: implement GPIO and GPIO interrupt support
[ARM] Orion: share GPIO IRQ handling code
[ARM] Orion: share GPIO handling code
[ARM] s3c: define __io using the typesafe version
[ARM] S3C64XX: Ensure CPU_V6 is selected
...
Diffstat (limited to 'arch/arm/mach-w90x900/irq.c')
-rw-r--r-- | arch/arm/mach-w90x900/irq.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/arm/mach-w90x900/irq.c b/arch/arm/mach-w90x900/irq.c new file mode 100644 index 000000000000..0b4fc194729c --- /dev/null +++ b/arch/arm/mach-w90x900/irq.c @@ -0,0 +1,76 @@ +/* + * linux/arch/arm/mach-w90x900/irq.c + * + * based on linux/arch/arm/plat-s3c24xx/irq.c by Ben Dooks + * + * Copyright (c) 2008 Nuvoton technology corporation + * All rights reserved. + * + * Wan ZongShun <mcuos.com@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/ptrace.h> +#include <linux/sysdev.h> +#include <linux/io.h> + +#include <asm/irq.h> +#include <asm/mach/irq.h> + +#include <mach/hardware.h> +#include <mach/regs-irq.h> + +static void w90x900_irq_mask(unsigned int irq) +{ + __raw_writel(1 << irq, REG_AIC_MDCR); +} + +/* + * By the w90p910 spec,any irq,only write 1 + * to REG_AIC_EOSCR for ACK + */ + +static void w90x900_irq_ack(unsigned int irq) +{ + __raw_writel(0x01, REG_AIC_EOSCR); +} + +static void w90x900_irq_unmask(unsigned int irq) +{ + unsigned long mask; + + if (irq == IRQ_T_INT_GROUP) { + mask = __raw_readl(REG_AIC_GEN); + __raw_writel(TIME_GROUP_IRQ | mask, REG_AIC_GEN); + __raw_writel(1 << IRQ_T_INT_GROUP, REG_AIC_MECR); + } + __raw_writel(1 << irq, REG_AIC_MECR); +} + +static struct irq_chip w90x900_irq_chip = { + .ack = w90x900_irq_ack, + .mask = w90x900_irq_mask, + .unmask = w90x900_irq_unmask, +}; + +void __init w90x900_init_irq(void) +{ + int irqno; + + __raw_writel(0xFFFFFFFE, REG_AIC_MDCR); + + for (irqno = IRQ_WDT; irqno <= IRQ_ADC; irqno++) { + set_irq_chip(irqno, &w90x900_irq_chip); + set_irq_handler(irqno, handle_level_irq); + set_irq_flags(irqno, IRQF_VALID); + } +} |