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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 09:15:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 09:15:15 -0800
commitac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9 (patch)
tree816e5ac643b15c2050c64a7075f0f7e13d86ea09 /arch/arm/mach-nuc93x/irq.c
parentb1bf9368407ae7e89d8a005bb40beb70a41df539 (diff)
parent9f33be2c3a80bdc2cc08342dd77fac87652e0548 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits) ARM: Eliminate decompressor -Dstatic= PIC hack ARM: 5958/1: ARM: U300: fix inverted clk round rate ARM: 5956/1: misplaced parentheses ARM: 5955/1: ep93xx: move timer defines into core.c and document ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c ARM: 5953/1: ep93xx: fix broken build of clock.c ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig ARM: 5949/1: NUC900 add gpio virtual memory map ARM: 5948/1: Enable timer0 to time4 clock support for nuc910 ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk ARM: make_coherent(): fix problems with highpte, part 2 MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself ARM: 5945/1: ep93xx: include correct irq.h in core.c ARM: 5933/1: amba-pl011: support hardware flow control ARM: 5930/1: Add PKMAP area description to memory.txt. ARM: 5929/1: Add checks to detect overlap of memory regions. ARM: 5928/1: Change type of VMALLOC_END to unsigned long. ARM: 5927/1: Make delimiters of DMA area globally visibly. ARM: 5926/1: Add "Virtual kernel memory..." printout. ARM: 5920/1: OMAP4: Enable L2 Cache ... Fix up trivial conflict in arch/arm/mach-mx25/clock.c
Diffstat (limited to 'arch/arm/mach-nuc93x/irq.c')
-rw-r--r--arch/arm/mach-nuc93x/irq.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/mach-nuc93x/irq.c b/arch/arm/mach-nuc93x/irq.c
new file mode 100644
index 00000000000..a7a88ea4ec3
--- /dev/null
+++ b/arch/arm/mach-nuc93x/irq.c
@@ -0,0 +1,66 @@
+/*
+ * linux/arch/arm/mach-nuc93x/irq.c
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#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 <linux/io.h>
+
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-irq.h>
+
+static void nuc93x_irq_mask(unsigned int irq)
+{
+ __raw_writel(1 << irq, REG_AIC_MDCR);
+}
+
+/*
+ * By the w90p910 spec,any irq,only write 1
+ * to REG_AIC_EOSCR for ACK
+ */
+
+static void nuc93x_irq_ack(unsigned int irq)
+{
+ __raw_writel(0x01, REG_AIC_EOSCR);
+}
+
+static void nuc93x_irq_unmask(unsigned int irq)
+{
+ __raw_writel(1 << irq, REG_AIC_MECR);
+
+}
+
+static struct irq_chip nuc93x_irq_chip = {
+ .ack = nuc93x_irq_ack,
+ .mask = nuc93x_irq_mask,
+ .unmask = nuc93x_irq_unmask,
+};
+
+void __init nuc93x_init_irq(void)
+{
+ int irqno;
+
+ __raw_writel(0xFFFFFFFE, REG_AIC_MDCR);
+
+ for (irqno = IRQ_WDT; irqno <= NR_IRQS; irqno++) {
+ set_irq_chip(irqno, &nuc93x_irq_chip);
+ set_irq_handler(irqno, handle_level_irq);
+ set_irq_flags(irqno, IRQF_VALID);
+ }
+}