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Diffstat (limited to 'arch/arm/mach-imx/irq.c')
-rw-r--r--arch/arm/mach-imx/irq.c252
1 files changed, 0 insertions, 252 deletions
diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c
deleted file mode 100644
index eeb8a6d4a39..00000000000
--- a/arch/arm/mach-imx/irq.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * linux/arch/arm/mach-imx/irq.c
- *
- * Copyright (C) 1999 ARM Limited
- * Copyright (C) 2002 Shane Nay (shane@minirl.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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * 03/03/2004 Sascha Hauer <sascha@saschahauer.de>
- * Copied from the motorola bsp package and added gpio demux
- * interrupt handler
- */
-
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/timer.h>
-
-#include <asm/hardware.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-
-#include <asm/mach/irq.h>
-
-/*
- *
- * We simply use the ENABLE DISABLE registers inside of the IMX
- * to turn on/off specific interrupts. FIXME- We should
- * also add support for the accelerated interrupt controller
- * by putting offets to irq jump code in the appropriate
- * places.
- *
- */
-
-#define INTENNUM_OFF 0x8
-#define INTDISNUM_OFF 0xC
-
-#define VA_AITC_BASE IO_ADDRESS(IMX_AITC_BASE)
-#define IMX_AITC_INTDISNUM (VA_AITC_BASE + INTDISNUM_OFF)
-#define IMX_AITC_INTENNUM (VA_AITC_BASE + INTENNUM_OFF)
-
-#if 0
-#define DEBUG_IRQ(fmt...) printk(fmt)
-#else
-#define DEBUG_IRQ(fmt...) do { } while (0)
-#endif
-
-static void
-imx_mask_irq(unsigned int irq)
-{
- __raw_writel(irq, IMX_AITC_INTDISNUM);
-}
-
-static void
-imx_unmask_irq(unsigned int irq)
-{
- __raw_writel(irq, IMX_AITC_INTENNUM);
-}
-
-static int
-imx_gpio_irq_type(unsigned int _irq, unsigned int type)
-{
- unsigned int irq_type = 0, irq, reg, bit;
-
- irq = _irq - IRQ_GPIOA(0);
- reg = irq >> 5;
- bit = 1 << (irq % 32);
-
- if (type == IRQT_PROBE) {
- /* Don't mess with enabled GPIOs using preconfigured edges or
- GPIOs set to alternate function during probe */
- /* TODO: support probe */
-// if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx]) &
-// GPIO_bit(gpio))
-// return 0;
-// if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2)))
-// return 0;
-// type = __IRQT_RISEDGE | __IRQT_FALEDGE;
- }
-
- GIUS(reg) |= bit;
- DDIR(reg) &= ~(bit);
-
- DEBUG_IRQ("setting type of irq %d to ", _irq);
-
- if (type & __IRQT_RISEDGE) {
- DEBUG_IRQ("rising edges\n");
- irq_type = 0x0;
- }
- if (type & __IRQT_FALEDGE) {
- DEBUG_IRQ("falling edges\n");
- irq_type = 0x1;
- }
- if (type & __IRQT_LOWLVL) {
- DEBUG_IRQ("low level\n");
- irq_type = 0x3;
- }
- if (type & __IRQT_HIGHLVL) {
- DEBUG_IRQ("high level\n");
- irq_type = 0x2;
- }
-
- if (irq % 32 < 16) {
- ICR1(reg) = (ICR1(reg) & ~(0x3 << ((irq % 16) * 2))) |
- (irq_type << ((irq % 16) * 2));
- } else {
- ICR2(reg) = (ICR2(reg) & ~(0x3 << ((irq % 16) * 2))) |
- (irq_type << ((irq % 16) * 2));
- }
-
- return 0;
-
-}
-
-static void
-imx_gpio_ack_irq(unsigned int irq)
-{
- DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
- ISR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
-}
-
-static void
-imx_gpio_mask_irq(unsigned int irq)
-{
- DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
- IMR(IRQ_TO_REG(irq)) &= ~( 1 << ((irq - IRQ_GPIOA(0)) % 32));
-}
-
-static void
-imx_gpio_unmask_irq(unsigned int irq)
-{
- DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
- IMR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
-}
-
-static void
-imx_gpio_handler(unsigned int mask, unsigned int irq,
- struct irqdesc *desc, struct pt_regs *regs)
-{
- desc = irq_desc + irq;
- while (mask) {
- if (mask & 1) {
- DEBUG_IRQ("handling irq %d\n", irq);
- desc_handle_irq(irq, desc, regs);
- }
- irq++;
- desc++;
- mask >>= 1;
- }
-}
-
-static void
-imx_gpioa_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
- struct pt_regs *regs)
-{
- unsigned int mask, irq;
-
- mask = ISR(0);
- irq = IRQ_GPIOA(0);
- imx_gpio_handler(mask, irq, desc, regs);
-}
-
-static void
-imx_gpiob_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
- struct pt_regs *regs)
-{
- unsigned int mask, irq;
-
- mask = ISR(1);
- irq = IRQ_GPIOB(0);
- imx_gpio_handler(mask, irq, desc, regs);
-}
-
-static void
-imx_gpioc_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
- struct pt_regs *regs)
-{
- unsigned int mask, irq;
-
- mask = ISR(2);
- irq = IRQ_GPIOC(0);
- imx_gpio_handler(mask, irq, desc, regs);
-}
-
-static void
-imx_gpiod_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
- struct pt_regs *regs)
-{
- unsigned int mask, irq;
-
- mask = ISR(3);
- irq = IRQ_GPIOD(0);
- imx_gpio_handler(mask, irq, desc, regs);
-}
-
-static struct irqchip imx_internal_chip = {
- .ack = imx_mask_irq,
- .mask = imx_mask_irq,
- .unmask = imx_unmask_irq,
-};
-
-static struct irqchip imx_gpio_chip = {
- .ack = imx_gpio_ack_irq,
- .mask = imx_gpio_mask_irq,
- .unmask = imx_gpio_unmask_irq,
- .set_type = imx_gpio_irq_type,
-};
-
-void __init
-imx_init_irq(void)
-{
- unsigned int irq;
-
- DEBUG_IRQ("Initializing imx interrupts\n");
-
- /* Mask all interrupts initially */
- IMR(0) = 0;
- IMR(1) = 0;
- IMR(2) = 0;
- IMR(3) = 0;
-
- for (irq = 0; irq < IMX_IRQS; irq++) {
- set_irq_chip(irq, &imx_internal_chip);
- set_irq_handler(irq, do_level_IRQ);
- set_irq_flags(irq, IRQF_VALID);
- }
-
- for (irq = IRQ_GPIOA(0); irq < IRQ_GPIOD(32); irq++) {
- set_irq_chip(irq, &imx_gpio_chip);
- set_irq_handler(irq, do_edge_IRQ);
- set_irq_flags(irq, IRQF_VALID);
- }
-
- set_irq_chained_handler(GPIO_INT_PORTA, imx_gpioa_demux_handler);
- set_irq_chained_handler(GPIO_INT_PORTB, imx_gpiob_demux_handler);
- set_irq_chained_handler(GPIO_INT_PORTC, imx_gpioc_demux_handler);
- set_irq_chained_handler(GPIO_INT_PORTD, imx_gpiod_demux_handler);
-
- /* Disable all interrupts initially. */
- /* In IMX this is done in the bootloader. */
-}
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