diff options
author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-04-01 12:41:21 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-05-07 16:15:51 +0200 |
commit | 1341d34ffc296f98dc84876f35f3151525dc02a2 (patch) | |
tree | d120e94a2f189ebecfc974db6f0d56bc1963121e /arch/arm/mach-imx/irq.c | |
parent | 8c8fdbc9bd9718b21146065de61c0cafdff11ecb (diff) |
[ARM] remove arch-imx
arch-imx is superseeded by the MXC architecture support.
This patch removes arch/arm/mach-imx from the kernel.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx/irq.c')
-rw-r--r-- | arch/arm/mach-imx/irq.c | 311 |
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 -} |