diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-lh7a40x/irq-lh7a400.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mach-lh7a40x/irq-lh7a400.c')
-rw-r--r-- | arch/arm/mach-lh7a40x/irq-lh7a400.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/arch/arm/mach-lh7a40x/irq-lh7a400.c b/arch/arm/mach-lh7a40x/irq-lh7a400.c new file mode 100644 index 00000000000..f334d81c2cd --- /dev/null +++ b/arch/arm/mach-lh7a40x/irq-lh7a400.c @@ -0,0 +1,90 @@ +/* arch/arm/mach-lh7a40x/irq-lh7a400.c + * + * Copyright (C) 2004 Coastal Environmental Systems + * + * 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/module.h> +#include <linux/interrupt.h> +#include <linux/ptrace.h> + +#include <asm/hardware.h> +#include <asm/irq.h> +#include <asm/mach/irq.h> +#include <asm/arch/irq.h> +#include <asm/arch/irqs.h> + + + /* CPU IRQ handling */ + +static void lh7a400_mask_irq (u32 irq) +{ + INTC_INTENC = (1 << irq); +} + +static void lh7a400_unmask_irq (u32 irq) +{ + INTC_INTENS = (1 << irq); +} + +static void lh7a400_ack_gpio_irq (u32 irq) +{ + GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (irq)); + INTC_INTENC = (1 << irq); +} + +static struct irqchip lh7a400_internal_chip = { + .ack = lh7a400_mask_irq, /* Level triggering -> mask is ack */ + .mask = lh7a400_mask_irq, + .unmask = lh7a400_unmask_irq, +}; + +static struct irqchip lh7a400_gpio_chip = { + .ack = lh7a400_ack_gpio_irq, + .mask = lh7a400_mask_irq, + .unmask = lh7a400_unmask_irq, +}; + + + /* IRQ initialization */ + +void __init lh7a400_init_irq (void) +{ + int irq; + + INTC_INTENC = 0xffffffff; /* Disable all interrupts */ + GPIO_GPIOFINTEN = 0x00; /* Disable all GPIOF interrupts */ + barrier (); + + for (irq = 0; irq < NR_IRQS; ++irq) { + switch (irq) { + case IRQ_GPIO0INTR: + case IRQ_GPIO1INTR: + case IRQ_GPIO2INTR: + case IRQ_GPIO3INTR: + case IRQ_GPIO4INTR: + case IRQ_GPIO5INTR: + case IRQ_GPIO6INTR: + case IRQ_GPIO7INTR: + set_irq_chip (irq, &lh7a400_gpio_chip); + set_irq_handler (irq, do_level_IRQ); /* OK default */ + break; + default: + set_irq_chip (irq, &lh7a400_internal_chip); + set_irq_handler (irq, do_level_IRQ); + } + set_irq_flags (irq, IRQF_VALID); + } + + lh7a40x_init_board_irq (); + +/* *** FIXME: the LH7a400 does use FIQ interrupts in some cases. For + the time being, these are not initialized. */ + +/* init_FIQ(); */ +} |