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authorBen Dooks <ben-linux@fluff.org>2007-02-11 20:31:01 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-02-11 20:36:09 +0300
commita21765a70ec06be175d3997320a83fa66fcc8955 (patch)
tree24bdbf437a9bd5b7c1af05898f5aa25dccf67fe9 /arch/arm/mach-s3c2412/irq.c
parentd19494b187b20e363f9b434b9ceab4159ac88324 (diff)
downloadlinux-a21765a70ec06be175d3997320a83fa66fcc8955.tar.xz
[ARM] 4157/2: S3C24XX: move arch/arch/mach-s3c2410 into cpu components
The following patch and script moves the arch/arm/mach-s3c2410 directory into arch/arm/plat-s3c24xx for the generic core code and inti arch/arm/mach-s3c{cpu} for the cpu/machine support files Include directory include/asm-arm/plat-s3c24xx is added for the core include files. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-s3c2412/irq.c')
-rw-r--r--arch/arm/mach-s3c2412/irq.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2412/irq.c b/arch/arm/mach-s3c2412/irq.c
new file mode 100644
index 000000000000..e89dbdcb1b7b
--- /dev/null
+++ b/arch/arm/mach-s3c2412/irq.c
@@ -0,0 +1,133 @@
+/* linux/arch/arm/mach-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>
+
+#include <asm/mach/irq.h>
+
+#include <asm/arch/regs-irq.h>
+#include <asm/arch/regs-gpio.h>
+
+#include <asm/plat-s3c24xx/cpu.h>
+#include <asm/plat-s3c24xx/irq.h>
+#include <asm/plat-s3c24xx/pm.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);
+
+ 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;
+
+ mask = __raw_readl(S3C2410_INTMSK);
+ __raw_writel(mask|bitval, S3C2410_INTMSK);
+
+ mask = __raw_readl(S3C2412_EINTMASK);
+ __raw_writel(mask | bitval, S3C2412_EINTMASK);
+
+ __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;
+
+ mask = __raw_readl(S3C2412_EINTMASK);
+ __raw_writel(mask & ~bitval, S3C2412_EINTMASK);
+
+ mask = __raw_readl(S3C2410_INTMSK);
+ __raw_writel(mask & ~bitval, S3C2410_INTMSK);
+}
+
+static struct irq_chip 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,
+};
+
+static int s3c2412_irq_add(struct sys_device *sysdev)
+{
+ unsigned int irqno;
+
+ for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) {
+ set_irq_chip(irqno, &s3c2412_irq_eint0t4);
+ set_irq_handler(irqno, handle_edge_irq);
+ set_irq_flags(irqno, IRQF_VALID);
+ }
+
+ return 0;
+}
+
+static struct sysdev_driver s3c2412_irq_driver = {
+ .add = s3c2412_irq_add,
+ .suspend = s3c24xx_irq_suspend,
+ .resume = s3c24xx_irq_resume,
+};
+
+static int s3c2412_irq_init(void)
+{
+ return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_irq_driver);
+}
+
+arch_initcall(s3c2412_irq_init);