1 files changed, 86 insertions, 0 deletions
diff --git a/arch/h8300/platform/h8300h/ints_h8300h.c b/arch/h8300/platform/h8300h/ints_h8300h.c
new file mode 100644
index 000000000000..86a155479167
--- /dev/null
+++ b/arch/h8300/platform/h8300h/ints_h8300h.c
@@ -0,0 +1,86 @@
+/*
+ * linux/arch/h8300/platform/h8300h/ints_h8300h.c
+ * Interrupt handling CPU variants
+ *
+ * Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+
+#include <asm/ptrace.h>
+#include <asm/traps.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/regs306x.h>
+
+/* saved vector list */
+const int __initdata h8300_saved_vectors[]={
+#if defined(CONFIG_GDB_DEBUG)
+	TRAP3_VEC,
+#endif
+	-1
+};
+
+/* trap entry table */
+const unsigned long __initdata h8300_trap_table[NR_TRAPS]={
+	0,0,0,0,0,0,0,0,
+	(unsigned long)system_call,  /* TRAPA #0 */
+	0,0,
+	(unsigned long)trace_break,  /* TRAPA #3 */
+};
+
+int h8300_enable_irq_pin(unsigned int irq)
+{
+	int bitmask;
+	if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
+		return 0;
+
+	/* initialize IRQ pin */
+	bitmask = 1 << (irq - EXT_IRQ0);
+	switch(irq) {
+	case EXT_IRQ0:
+	case EXT_IRQ1:
+	case EXT_IRQ2:
+	case EXT_IRQ3:
+		if (H8300_GPIO_RESERVE(H8300_GPIO_P8, bitmask) == 0)
+			return -EBUSY;
+		H8300_GPIO_DDR(H8300_GPIO_P8, bitmask, H8300_GPIO_INPUT);
+		break;
+	case EXT_IRQ4:
+	case EXT_IRQ5:
+		if (H8300_GPIO_RESERVE(H8300_GPIO_P9, bitmask) == 0)
+			return -EBUSY;
+		H8300_GPIO_DDR(H8300_GPIO_P9, bitmask, H8300_GPIO_INPUT);
+		break;
+	}
+
+	return 0;
+}
+
+void h8300_disable_irq_pin(unsigned int irq)
+{
+	int bitmask;
+	if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
+		return;
+
+	/* disable interrupt & release IRQ pin */
+	bitmask = 1 << (irq - EXT_IRQ0);
+	switch(irq) {
+	case EXT_IRQ0:
+	case EXT_IRQ1:
+	case EXT_IRQ2:
+	case EXT_IRQ3:
+		*(volatile unsigned char *)IER &= ~bitmask;
+		H8300_GPIO_FREE(H8300_GPIO_P8, bitmask);
+		break ;
+	case EXT_IRQ4:
+	case EXT_IRQ5:
+		*(volatile unsigned char *)IER &= ~bitmask;
+		H8300_GPIO_FREE(H8300_GPIO_P9, bitmask);
+		break;
+	}
+}