1 files changed, 92 insertions, 0 deletions
diff --git a/arch/arm/mach-lh7a40x/irq-kev7a400.c b/arch/arm/mach-lh7a40x/irq-kev7a400.c
new file mode 100644
index 00000000000..691bb09232a
--- /dev/null
+++ b/arch/arm/mach-lh7a40x/irq-kev7a400.c
@@ -0,0 +1,92 @@
+/* arch/arm/mach-lh7a40x/irq-kev7a400.c
+ *
+ *  Copyright (C) 2004 Coastal Environmental Systems
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  version 2 as published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/interrupt.h>
+#include <linux/init.h>
+
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/hardware.h>
+#include <asm/mach/irqs.h>
+
+
+  /* KEV7a400 CPLD IRQ handling */
+
+static u16 CPLD_IRQ_mask;	/* Mask for CPLD IRQs, 1 == unmasked */
+
+static void
+lh7a400_ack_cpld_irq (u32 irq)
+{
+	CPLD_CL_INT = 1 << (irq - IRQ_KEV7A400_CPLD);
+}
+
+static void
+lh7a400_mask_cpld_irq (u32 irq)
+{
+	CPLD_IRQ_mask &= ~(1 << (irq - IRQ_KEV7A400_CPLD));
+	CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask;
+}
+
+static void
+lh7a400_unmask_cpld_irq (u32 irq)
+{
+	CPLD_IRQ_mask |= 1 << (irq - IRQ_KEV7A400_CPLD);
+	CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask;
+}
+
+static struct
+irqchip lh7a400_cpld_chip = {
+	.ack	= lh7a400_ack_cpld_irq,
+	.mask	= lh7a400_mask_cpld_irq,
+	.unmask	= lh7a400_unmask_cpld_irq,
+};
+
+static void
+lh7a400_cpld_handler (unsigned int irq, struct irqdesc *desc,
+		      struct pt_regs *regs)
+{
+	u32 mask = CPLD_LATCHED_INTS;
+	irq = IRQ_KEV_7A400_CPLD;
+	for (; mask; mask >>= 1, ++irq) {
+		if (mask & 1)
+			desc[irq].handle (irq, desc, regs);
+	}
+}
+
+  /* IRQ initialization */
+
+void __init
+lh7a400_init_board_irq (void)
+{
+	int irq;
+
+	for (irq = IRQ_KEV7A400_CPLD;
+	     irq < IRQ_KEV7A400_CPLD + NR_IRQ_KEV7A400_CPLD; ++irq) {
+		set_irq_chip (irq, &lh7a400_cpld_chip);
+		set_irq_handler (irq, do_edge_IRQ);
+		set_irq_flags (irq, IRQF_VALID);
+	}
+	set_irq_chained_handler (IRQ_CPLD, kev7a400_cpld_handler);
+
+		/* Clear all CPLD interrupts */
+	CPLD_CL_INT = 0xff; /* CPLD_INTR_MMC_CD | CPLD_INTR_ETH_INT; */
+
+    /* *** FIXME CF enabled in ide-probe.c */
+
+	GPIO_GPIOINTEN = 0;		/* Disable all GPIO interrupts */
+	barrier();
+	GPIO_INTTYPE1
+		= (GPIO_INTR_PCC1_CD | GPIO_INTR_PCC1_CD); /* Edge trig. */
+	GPIO_INTTYPE2 = 0;		/* Falling edge & low-level */
+	GPIO_GPIOFEOI = 0xff;		/* Clear all GPIO interrupts */
+	GPIO_GPIOINTEN = 0xff;		/* Enable all GPIO interrupts */
+
+	init_FIQ();
+}