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Diffstat (limited to 'arch/arm/mach-imx/irq.c')
-rw-r--r--arch/arm/mach-imx/irq.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c
deleted file mode 100644
index 531b95deadc..00000000000
--- a/arch/arm/mach-imx/irq.c
+++ /dev/null
@@ -1,311 +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 <linux/io.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-
-#include <asm/mach/irq.h>
-
-/*
- *
- * We simply use the ENABLE DISABLE registers inside of the IMX
- * to turn on/off specific interrupts.
- *
- */
-
-#define INTCNTL_OFF 0x00
-#define NIMASK_OFF 0x04
-#define INTENNUM_OFF 0x08
-#define INTDISNUM_OFF 0x0C
-#define INTENABLEH_OFF 0x10
-#define INTENABLEL_OFF 0x14
-#define INTTYPEH_OFF 0x18
-#define INTTYPEL_OFF 0x1C
-#define NIPRIORITY_OFF(x) (0x20+4*(7-(x)))
-#define NIVECSR_OFF 0x40
-#define FIVECSR_OFF 0x44
-#define INTSRCH_OFF 0x48
-#define INTSRCL_OFF 0x4C
-#define INTFRCH_OFF 0x50
-#define INTFRCL_OFF 0x54
-#define NIPNDH_OFF 0x58
-#define NIPNDL_OFF 0x5C
-#define FIPNDH_OFF 0x60
-#define FIPNDL_OFF 0x64
-
-#define VA_AITC_BASE IO_ADDRESS(IMX_AITC_BASE)
-#define IMX_AITC_INTCNTL (VA_AITC_BASE + INTCNTL_OFF)
-#define IMX_AITC_NIMASK (VA_AITC_BASE + NIMASK_OFF)
-#define IMX_AITC_INTENNUM (VA_AITC_BASE + INTENNUM_OFF)
-#define IMX_AITC_INTDISNUM (VA_AITC_BASE + INTDISNUM_OFF)
-#define IMX_AITC_INTENABLEH (VA_AITC_BASE + INTENABLEH_OFF)
-#define IMX_AITC_INTENABLEL (VA_AITC_BASE + INTENABLEL_OFF)
-#define IMX_AITC_INTTYPEH (VA_AITC_BASE + INTTYPEH_OFF)
-#define IMX_AITC_INTTYPEL (VA_AITC_BASE + INTTYPEL_OFF)
-#define IMX_AITC_NIPRIORITY(x) (VA_AITC_BASE + NIPRIORITY_OFF(x))
-#define IMX_AITC_NIVECSR (VA_AITC_BASE + NIVECSR_OFF)
-#define IMX_AITC_FIVECSR (VA_AITC_BASE + FIVECSR_OFF)
-#define IMX_AITC_INTSRCH (VA_AITC_BASE + INTSRCH_OFF)
-#define IMX_AITC_INTSRCL (VA_AITC_BASE + INTSRCL_OFF)
-#define IMX_AITC_INTFRCH (VA_AITC_BASE + INTFRCH_OFF)
-#define IMX_AITC_INTFRCL (VA_AITC_BASE + INTFRCL_OFF)
-#define IMX_AITC_NIPNDH (VA_AITC_BASE + NIPNDH_OFF)
-#define IMX_AITC_NIPNDL (VA_AITC_BASE + NIPNDL_OFF)
-#define IMX_AITC_FIPNDH (VA_AITC_BASE + FIPNDH_OFF)
-#define IMX_AITC_FIPNDL (VA_AITC_BASE + FIPNDL_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);
-}
-
-#ifdef CONFIG_FIQ
-int imx_set_irq_fiq(unsigned int irq, unsigned int type)
-{
- unsigned int irqt;
-
- if (irq >= IMX_IRQS)
- return -EINVAL;
-
- if (irq < IMX_IRQS / 2) {
- irqt = __raw_readl(IMX_AITC_INTTYPEL) & ~(1 << irq);
- __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEL);
- } else {
- irq -= IMX_IRQS / 2;
- irqt = __raw_readl(IMX_AITC_INTTYPEH) & ~(1 << irq);
- __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEH);
- }
-
- return 0;
-}
-EXPORT_SYMBOL(imx_set_irq_fiq);
-#endif /* CONFIG_FIQ */
-
-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 == IRQ_TYPE_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 = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
- }
-
- GIUS(reg) |= bit;
- DDIR(reg) &= ~(bit);
-
- DEBUG_IRQ("setting type of irq %d to ", _irq);
-
- if (type & IRQ_TYPE_EDGE_RISING) {
- DEBUG_IRQ("rising edges\n");
- irq_type = 0x0;
- }
- if (type & IRQ_TYPE_EDGE_FALLING) {
- DEBUG_IRQ("falling edges\n");
- irq_type = 0x1;
- }
- if (type & IRQ_TYPE_LEVEL_LOW) {
- DEBUG_IRQ("low level\n");
- irq_type = 0x3;
- }
- if (type & IRQ_TYPE_LEVEL_HIGH) {
- 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", __func__, 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", __func__, 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", __func__, irq);
- IMR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
-}
-
-static void
-imx_gpio_handler(unsigned int mask, unsigned int irq,
- struct irq_desc *desc)
-{
- while (mask) {
- if (mask & 1) {
- DEBUG_IRQ("handling irq %d\n", irq);
- generic_handle_irq(irq);
- }
- irq++;
- mask >>= 1;
- }
-}
-
-static void
-imx_gpioa_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
-{
- unsigned int mask, irq;
-
- mask = ISR(0);
- irq = IRQ_GPIOA(0);
- imx_gpio_handler(mask, irq, desc);
-}
-
-static void
-imx_gpiob_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
-{
- unsigned int mask, irq;
-
- mask = ISR(1);
- irq = IRQ_GPIOB(0);
- imx_gpio_handler(mask, irq, desc);
-}
-
-static void
-imx_gpioc_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
-{
- unsigned int mask, irq;
-
- mask = ISR(2);
- irq = IRQ_GPIOC(0);
- imx_gpio_handler(mask, irq, desc);
-}
-
-static void
-imx_gpiod_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
-{
- unsigned int mask, irq;
-
- mask = ISR(3);
- irq = IRQ_GPIOD(0);
- imx_gpio_handler(mask, irq, desc);
-}
-
-static struct irq_chip imx_internal_chip = {
- .name = "MPU",
- .ack = imx_mask_irq,
- .mask = imx_mask_irq,
- .unmask = imx_unmask_irq,
-};
-
-static struct irq_chip imx_gpio_chip = {
- .name = "GPIO",
- .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");
-
- /* Disable all interrupts initially. */
- /* Do not rely on the bootloader. */
- __raw_writel(0, IMX_AITC_INTENABLEH);
- __raw_writel(0, IMX_AITC_INTENABLEL);
-
- /* Mask all GPIO interrupts as well */
- 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, handle_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, handle_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);
-
- /* Release masking of interrupts according to priority */
- __raw_writel(-1, IMX_AITC_NIMASK);
-
-#ifdef CONFIG_FIQ
- /* Initialize FIQ */
- init_FIQ();
-#endif
-}
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