projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* arch/arm/mach-lh7a40x/irq-lh7a400.c |
| 2 | * | |
| 3 | * Copyright (C) 2004 Coastal Environmental Systems | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or | |
| 6 | * modify it under the terms of the GNU General Public License | |
| 7 | * version 2 as published by the Free Software Foundation. | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/init.h> | |
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/interrupt.h> | |
| 1da177e4 | 14 | |
| a09e64fb | 15 | #include <mach/hardware.h> |
| 1da177e4 LT |
16 | #include <asm/irq.h> |
| 17 | #include <asm/mach/irq.h> | |
| a09e64fb | 18 | #include <mach/irqs.h> |
| 1da177e4 | 19 | |
| 411ef7f4 | 20 | #include "common.h" |
| 1da177e4 LT |
21 | |
| 22 | /* CPU IRQ handling */ | |
| 23 | ||
| 24 | static void lh7a400_mask_irq (u32 irq) | |
| 25 | { | |
| 26 | INTC_INTENC = (1 << irq); | |
| 27 | } | |
| 28 | ||
| 29 | static void lh7a400_unmask_irq (u32 irq) | |
| 30 | { | |
| 31 | INTC_INTENS = (1 << irq); | |
| 32 | } | |
| 33 | ||
| 34 | static void lh7a400_ack_gpio_irq (u32 irq) | |
| 35 | { | |
| 36 | GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (irq)); | |
| 37 | INTC_INTENC = (1 << irq); | |
| 38 | } | |
| 39 | ||
| 38c677cb DB |
40 | static struct irq_chip lh7a400_internal_chip = { |
| 41 | .name = "MPU", | |
| 1da177e4 LT |
42 | .ack = lh7a400_mask_irq, /* Level triggering -> mask is ack */ |
| 43 | .mask = lh7a400_mask_irq, | |
| 44 | .unmask = lh7a400_unmask_irq, | |
| 45 | }; | |
| 46 | ||
| 38c677cb DB |
47 | static struct irq_chip lh7a400_gpio_chip = { |
| 48 | .name = "GPIO", | |
| 1da177e4 LT |
49 | .ack = lh7a400_ack_gpio_irq, |
| 50 | .mask = lh7a400_mask_irq, | |
| 51 | .unmask = lh7a400_unmask_irq, | |
| 52 | }; | |
| 53 | ||
| 54 | ||
| 55 | /* IRQ initialization */ | |
| 56 | ||
| 57 | void __init lh7a400_init_irq (void) | |
| 58 | { | |
| 59 | int irq; | |
| 60 | ||
| 61 | INTC_INTENC = 0xffffffff; /* Disable all interrupts */ | |
| 62 | GPIO_GPIOFINTEN = 0x00; /* Disable all GPIOF interrupts */ | |
| 63 | barrier (); | |
| 64 | ||
| 65 | for (irq = 0; irq < NR_IRQS; ++irq) { | |
| 66 | switch (irq) { | |
| 67 | case IRQ_GPIO0INTR: | |
| 68 | case IRQ_GPIO1INTR: | |
| 69 | case IRQ_GPIO2INTR: | |
| 70 | case IRQ_GPIO3INTR: | |
| 71 | case IRQ_GPIO4INTR: | |
| 72 | case IRQ_GPIO5INTR: | |
| 73 | case IRQ_GPIO6INTR: | |
| 74 | case IRQ_GPIO7INTR: | |
| 75 | set_irq_chip (irq, &lh7a400_gpio_chip); | |
| 10dd5ce2 | 76 | set_irq_handler (irq, handle_level_irq); /* OK default */ |
| 1da177e4 LT |
77 | break; |
| 78 | default: | |
| 79 | set_irq_chip (irq, &lh7a400_internal_chip); | |
| 10dd5ce2 | 80 | set_irq_handler (irq, handle_level_irq); |
| 1da177e4 LT |
81 | } |
| 82 | set_irq_flags (irq, IRQF_VALID); | |
| 83 | } | |
| 84 | ||
| 85 | lh7a40x_init_board_irq (); | |
| 86 | ||
| 87 | /* *** FIXME: the LH7a400 does use FIQ interrupts in some cases. For | |
| 88 | the time being, these are not initialized. */ | |
| 89 | ||
| 90 | /* init_FIQ(); */ | |
| 91 | } |