sh: mach-sdk7786: FPGA updates.

This does a bit of refactoring of the FPGA management code. The primary
FPGA initialization is moved out to its own file in preparation for
implementing some of the more complex capabilities, a complete set of
register definitions is provided, and all of the existing users in the
board code are moved over to use the new interface instead of setting up
overlapping mappings. This also corrects the FPGA size, which previously
was chomped off at the SDIF control register.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/arch/sh/boards/mach-sdk7786/fpga.c b/arch/sh/boards/mach-sdk7786/fpga.c
new file mode 100644
index 0000000..99f903c
--- /dev/null
+++ b/arch/sh/boards/mach-sdk7786/fpga.c
@@ -0,0 +1,37 @@
+/*
+ * SDK7786 FPGA Support.
+ *
+ * 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/init.h>
+#include <linux/io.h>
+#include <linux/bcd.h>
+#include <mach/fpga.h>
+
+#define FPGA_REGS_BASE	0x07fff800
+#define FPGA_REGS_SIZE	0x490
+
+void __iomem *sdk7786_fpga_base;
+
+void __init sdk7786_fpga_init(void)
+{
+	u16 version, date;
+
+	sdk7786_fpga_base = ioremap_nocache(FPGA_REGS_BASE, FPGA_REGS_SIZE);
+	if (unlikely(!sdk7786_fpga_base)) {
+		panic("FPGA remapping failed.\n");
+		return;
+	}
+
+	version = fpga_read_reg(FPGAVR);
+	date = fpga_read_reg(FPGADR);
+
+	pr_info("\tFPGA version:\t%d.%d (built on %d/%d/%d)\n",
+		bcd2bin(version >> 8) & 0xf, bcd2bin(version & 0xf),
+		((date >> 12) & 0xf) + 2000,
+		(date >> 8) & 0xf, bcd2bin(date & 0xff));
+}