diff options
Diffstat (limited to 'arch/arm/mach-s3c2443/irq.c')
| -rw-r--r-- | arch/arm/mach-s3c2443/irq.c | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/arch/arm/mach-s3c2443/irq.c b/arch/arm/mach-s3c2443/irq.c deleted file mode 100644 index 0e0d693f397..00000000000 --- a/arch/arm/mach-s3c2443/irq.c +++ /dev/null @@ -1,286 +0,0 @@ -/* linux/arch/arm/mach-s3c2443/irq.c - * - * Copyright (c) 2007 Simtec Electronics - * Ben Dooks <ben@simtec.co.uk> - * - * 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 - * -*/ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/sysdev.h> -#include <linux/io.h> - -#include <mach/hardware.h> -#include <asm/irq.h> - -#include <asm/mach/irq.h> - -#include <mach/regs-irq.h> -#include <mach/regs-gpio.h> - -#include <plat/cpu.h> -#include <plat/pm.h> -#include <plat/irq.h> - -#define INTMSK(start, end) ((1 << ((end) + 1 - (start))) - 1) - -static inline void s3c2443_irq_demux(unsigned int irq, unsigned int len) -{ - unsigned int subsrc, submsk; - unsigned int end; - - /* read the current pending interrupts, and the mask - * for what it is available */ - - subsrc = __raw_readl(S3C2410_SUBSRCPND); - submsk = __raw_readl(S3C2410_INTSUBMSK); - - subsrc &= ~submsk; - subsrc >>= (irq - S3C2410_IRQSUB(0)); - subsrc &= (1 << len)-1; - - end = len + irq; - - for (; irq < end && subsrc; irq++) { - if (subsrc & 1) - generic_handle_irq(irq); - - subsrc >>= 1; - } -} - -/* WDT/AC97 sub interrupts */ - -static void s3c2443_irq_demux_wdtac97(unsigned int irq, struct irq_desc *desc) -{ - s3c2443_irq_demux(IRQ_S3C2443_WDT, 4); -} - -#define INTMSK_WDTAC97 (1UL << (IRQ_WDT - IRQ_EINT0)) -#define SUBMSK_WDTAC97 INTMSK(IRQ_S3C2443_WDT, IRQ_S3C2443_AC97) - -static void s3c2443_irq_wdtac97_mask(unsigned int irqno) -{ - s3c_irqsub_mask(irqno, INTMSK_WDTAC97, SUBMSK_WDTAC97); -} - -static void s3c2443_irq_wdtac97_unmask(unsigned int irqno) -{ - s3c_irqsub_unmask(irqno, INTMSK_WDTAC97); -} - -static void s3c2443_irq_wdtac97_ack(unsigned int irqno) -{ - s3c_irqsub_maskack(irqno, INTMSK_WDTAC97, SUBMSK_WDTAC97); -} - -static struct irq_chip s3c2443_irq_wdtac97 = { - .mask = s3c2443_irq_wdtac97_mask, - .unmask = s3c2443_irq_wdtac97_unmask, - .ack = s3c2443_irq_wdtac97_ack, -}; - - -/* LCD sub interrupts */ - -static void s3c2443_irq_demux_lcd(unsigned int irq, struct irq_desc *desc) -{ - s3c2443_irq_demux(IRQ_S3C2443_LCD1, 4); -} - -#define INTMSK_LCD (1UL << (IRQ_LCD - IRQ_EINT0)) -#define SUBMSK_LCD INTMSK(IRQ_S3C2443_LCD1, IRQ_S3C2443_LCD4) - -static void s3c2443_irq_lcd_mask(unsigned int irqno) -{ - s3c_irqsub_mask(irqno, INTMSK_LCD, SUBMSK_LCD); -} - -static void s3c2443_irq_lcd_unmask(unsigned int irqno) -{ - s3c_irqsub_unmask(irqno, INTMSK_LCD); -} - -static void s3c2443_irq_lcd_ack(unsigned int irqno) -{ - s3c_irqsub_maskack(irqno, INTMSK_LCD, SUBMSK_LCD); -} - -static struct irq_chip s3c2443_irq_lcd = { - .mask = s3c2443_irq_lcd_mask, - .unmask = s3c2443_irq_lcd_unmask, - .ack = s3c2443_irq_lcd_ack, -}; - - -/* DMA sub interrupts */ - -static void s3c2443_irq_demux_dma(unsigned int irq, struct irq_desc *desc) -{ - s3c2443_irq_demux(IRQ_S3C2443_DMA0, 6); -} - -#define INTMSK_DMA (1UL << (IRQ_S3C2443_DMA - IRQ_EINT0)) -#define SUBMSK_DMA INTMSK(IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5) - - -static void s3c2443_irq_dma_mask(unsigned int irqno) -{ - s3c_irqsub_mask(irqno, INTMSK_DMA, SUBMSK_DMA); -} - -static void s3c2443_irq_dma_unmask(unsigned int irqno) -{ - s3c_irqsub_unmask(irqno, INTMSK_DMA); -} - -static void s3c2443_irq_dma_ack(unsigned int irqno) -{ - s3c_irqsub_maskack(irqno, INTMSK_DMA, SUBMSK_DMA); -} - -static struct irq_chip s3c2443_irq_dma = { - .mask = s3c2443_irq_dma_mask, - .unmask = s3c2443_irq_dma_unmask, - .ack = s3c2443_irq_dma_ack, -}; - - -/* UART3 sub interrupts */ - -static void s3c2443_irq_demux_uart3(unsigned int irq, struct irq_desc *desc) -{ - s3c2443_irq_demux(IRQ_S3C2443_UART3, 3); -} - -#define INTMSK_UART3 (1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0)) -#define SUBMSK_UART3 (0xf << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0))) - - -static void s3c2443_irq_uart3_mask(unsigned int irqno) -{ - s3c_irqsub_mask(irqno, INTMSK_UART3, SUBMSK_UART3); -} - -static void s3c2443_irq_uart3_unmask(unsigned int irqno) -{ - s3c_irqsub_unmask(irqno, INTMSK_UART3); -} - -static void s3c2443_irq_uart3_ack(unsigned int irqno) -{ - s3c_irqsub_maskack(irqno, INTMSK_UART3, SUBMSK_UART3); -} - -static struct irq_chip s3c2443_irq_uart3 = { - .mask = s3c2443_irq_uart3_mask, - .unmask = s3c2443_irq_uart3_unmask, - .ack = s3c2443_irq_uart3_ack, -}; - - -/* CAM sub interrupts */ - -static void s3c2443_irq_demux_cam(unsigned int irq, struct irq_desc *desc) -{ - s3c2443_irq_demux(IRQ_S3C2440_CAM_C, 4); -} - -#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0)) -#define SUBMSK_CAM INTMSK(IRQ_S3C2440_CAM_C, IRQ_S3C2440_CAM_P) - -static void s3c2443_irq_cam_mask(unsigned int irqno) -{ - s3c_irqsub_mask(irqno, INTMSK_CAM, SUBMSK_CAM); -} - -static void s3c2443_irq_cam_unmask(unsigned int irqno) -{ - s3c_irqsub_unmask(irqno, INTMSK_CAM); -} - -static void s3c2443_irq_cam_ack(unsigned int irqno) -{ - s3c_irqsub_maskack(irqno, INTMSK_CAM, SUBMSK_CAM); -} - -static struct irq_chip s3c2443_irq_cam = { - .mask = s3c2443_irq_cam_mask, - .unmask = s3c2443_irq_cam_unmask, - .ack = s3c2443_irq_cam_ack, -}; - -/* IRQ initialisation code */ - -static int __init s3c2443_add_sub(unsigned int base, - void (*demux)(unsigned int, - struct irq_desc *), - struct irq_chip *chip, - unsigned int start, unsigned int end) -{ - unsigned int irqno; - - set_irq_chip(base, &s3c_irq_level_chip); - set_irq_handler(base, handle_level_irq); - set_irq_chained_handler(base, demux); - - for (irqno = start; irqno <= end; irqno++) { - set_irq_chip(irqno, chip); - set_irq_handler(irqno, handle_level_irq); - set_irq_flags(irqno, IRQF_VALID); - } - - return 0; -} - -static int __init s3c2443_irq_add(struct sys_device *sysdev) -{ - printk("S3C2443: IRQ Support\n"); - - s3c2443_add_sub(IRQ_CAM, s3c2443_irq_demux_cam, &s3c2443_irq_cam, - IRQ_S3C2440_CAM_C, IRQ_S3C2440_CAM_P); - - s3c2443_add_sub(IRQ_LCD, s3c2443_irq_demux_lcd, &s3c2443_irq_lcd, - IRQ_S3C2443_LCD1, IRQ_S3C2443_LCD4); - - s3c2443_add_sub(IRQ_S3C2443_DMA, s3c2443_irq_demux_dma, - &s3c2443_irq_dma, IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5); - - s3c2443_add_sub(IRQ_S3C2443_UART3, s3c2443_irq_demux_uart3, - &s3c2443_irq_uart3, - IRQ_S3C2443_RX3, IRQ_S3C2443_ERR3); - - s3c2443_add_sub(IRQ_WDT, s3c2443_irq_demux_wdtac97, - &s3c2443_irq_wdtac97, - IRQ_S3C2443_WDT, IRQ_S3C2443_AC97); - - return 0; -} - -static struct sysdev_driver s3c2443_irq_driver = { - .add = s3c2443_irq_add, -}; - -static int __init s3c2443_irq_init(void) -{ - return sysdev_driver_register(&s3c2443_sysclass, &s3c2443_irq_driver); -} - -arch_initcall(s3c2443_irq_init); - |