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| Original file line number | Diff line number | Diff line change |
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| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: b6397893a5ed81970e803d61ee2f1a0e79f87438 | ||
| refs/heads/master: 0bc0748dfbefacce9c6b67ab23f2c80133b598f7 |
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| /* linux/arch/arm/mach-s3c2412/s3c2412-irq.c | ||
| * | ||
| * Copyright (c) 2006 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/ptrace.h> | ||
| #include <linux/sysdev.h> | ||
|
|
||
| #include <asm/hardware.h> | ||
| #include <asm/irq.h> | ||
| #include <asm/io.h> | ||
|
|
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| #include <asm/mach/irq.h> | ||
|
|
||
| #include <asm/arch/regs-irq.h> | ||
| #include <asm/arch/regs-gpio.h> | ||
|
|
||
| #include "cpu.h" | ||
| #include "irq.h" | ||
|
|
||
| /* the s3c2412 changes the behaviour of IRQ_EINT0 through IRQ_EINT3 by | ||
| * having them turn up in both the INT* and the EINT* registers. Whilst | ||
| * both show the status, they both now need to be acked when the IRQs | ||
| * go off. | ||
| */ | ||
|
|
||
| static void | ||
| s3c2412_irq_mask(unsigned int irqno) | ||
| { | ||
| unsigned long bitval = 1UL << (irqno - IRQ_EINT0); | ||
| unsigned long mask; | ||
|
|
||
| mask = __raw_readl(S3C2410_INTMSK); | ||
| __raw_writel(mask | bitval, S3C2410_INTMSK); | ||
|
|
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| mask = __raw_readl(S3C2412_EINTMASK); | ||
| __raw_writel(mask | bitval, S3C2412_EINTMASK); | ||
| } | ||
|
|
||
| static inline void | ||
| s3c2412_irq_ack(unsigned int irqno) | ||
| { | ||
| unsigned long bitval = 1UL << (irqno - IRQ_EINT0); | ||
|
|
||
| __raw_writel(bitval, S3C2412_EINTPEND); | ||
| __raw_writel(bitval, S3C2410_SRCPND); | ||
| __raw_writel(bitval, S3C2410_INTPND); | ||
| } | ||
|
|
||
| static inline void | ||
| s3c2412_irq_maskack(unsigned int irqno) | ||
| { | ||
| unsigned long bitval = 1UL << (irqno - IRQ_EINT0); | ||
| unsigned long mask; | ||
|
|
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| mask = __raw_readl(S3C2410_INTMSK); | ||
| __raw_writel(mask|bitval, S3C2410_INTMSK); | ||
|
|
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| mask = __raw_readl(S3C2412_EINTMASK); | ||
| __raw_writel(mask | bitval, S3C2412_EINTMASK); | ||
|
|
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| __raw_writel(bitval, S3C2412_EINTPEND); | ||
| __raw_writel(bitval, S3C2410_SRCPND); | ||
| __raw_writel(bitval, S3C2410_INTPND); | ||
| } | ||
|
|
||
| static void | ||
| s3c2412_irq_unmask(unsigned int irqno) | ||
| { | ||
| unsigned long bitval = 1UL << (irqno - IRQ_EINT0); | ||
| unsigned long mask; | ||
|
|
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| mask = __raw_readl(S3C2412_EINTMASK); | ||
| __raw_writel(mask & ~bitval, S3C2412_EINTMASK); | ||
|
|
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| mask = __raw_readl(S3C2410_INTMSK); | ||
| __raw_writel(mask & ~bitval, S3C2410_INTMSK); | ||
| } | ||
|
|
||
| static struct irqchip s3c2412_irq_eint0t4 = { | ||
| .ack = s3c2412_irq_ack, | ||
| .mask = s3c2412_irq_mask, | ||
| .unmask = s3c2412_irq_unmask, | ||
| .set_wake = s3c_irq_wake, | ||
| .set_type = s3c_irqext_type, | ||
| }; | ||
|
|
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| static int s3c2412_irq_add(struct sys_device *sysdev) | ||
| { | ||
| unsigned int irqno; | ||
|
|
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| for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) { | ||
| set_irq_chip(irqno, &s3c2412_irq_eint0t4); | ||
| set_irq_handler(irqno, do_edge_IRQ); | ||
| set_irq_flags(irqno, IRQF_VALID); | ||
| } | ||
|
|
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| return 0; | ||
| } | ||
|
|
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| static struct sysdev_driver s3c2412_irq_driver = { | ||
| .add = s3c2412_irq_add, | ||
| }; | ||
|
|
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| static int s3c2412_irq_init(void) | ||
| { | ||
| return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_irq_driver); | ||
| } | ||
|
|
||
| arch_initcall(s3c2412_irq_init); |
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