1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-sdk7786/irq.c b/arch/sh/boards/mach-sdk7786/irq.c
new file mode 100644
index 0000000000..340c306ea9
--- /dev/null
+++ b/arch/sh/boards/mach-sdk7786/irq.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SDK7786 FPGA IRQ Controller Support.
+ *
+ * Copyright (C) 2010  Matt Fleming
+ * Copyright (C) 2010  Paul Mundt
+ */
+#include <linux/irq.h>
+#include <mach/fpga.h>
+#include <mach/irq.h>
+
+enum {
+	ATA_IRQ_BIT		= 1,
+	SPI_BUSY_BIT		= 2,
+	LIRQ5_BIT		= 3,
+	LIRQ6_BIT		= 4,
+	LIRQ7_BIT		= 5,
+	LIRQ8_BIT		= 6,
+	KEY_IRQ_BIT		= 7,
+	PEN_IRQ_BIT		= 8,
+	ETH_IRQ_BIT		= 9,
+	RTC_ALARM_BIT		= 10,
+	CRYSTAL_FAIL_BIT	= 12,
+	ETH_PME_BIT		= 14,
+};
+
+void __init sdk7786_init_irq(void)
+{
+	unsigned int tmp;
+
+	/* Enable priority encoding for all IRLs */
+	fpga_write_reg(fpga_read_reg(INTMSR) | 0x0303, INTMSR);
+
+	/* Clear FPGA interrupt status registers */
+	fpga_write_reg(0x0000, INTASR);
+	fpga_write_reg(0x0000, INTBSR);
+
+	/* Unmask FPGA interrupts */
+	tmp = fpga_read_reg(INTAMR);
+	tmp &= ~(1 << ETH_IRQ_BIT);
+	fpga_write_reg(tmp, INTAMR);
+
+	plat_irq_setup_pins(IRQ_MODE_IRL7654_MASK);
+	plat_irq_setup_pins(IRQ_MODE_IRL3210_MASK);
+}