1 files changed, 48 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 000000000000..46943a0da5b7
--- /dev/null
+++ b/arch/sh/boards/mach-sdk7786/irq.c
@@ -0,0 +1,48 @@
+/*
+ * SDK7786 FPGA IRQ Controller Support.
+ *
+ * Copyright (C) 2010  Matt Fleming
+ * Copyright (C) 2010  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#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);
+}