Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (187 commits)
  sh: remove dead LED code for migo-r and ms7724se
  sh: ecovec build fix for CONFIG_I2C=n
  sh: ecovec r-standby support
  sh: ms7724se r-standby support
  sh: SH-Mobile R-standby register save/restore
  clocksource: Fix up a registration/IRQ race in the sh drivers.
  sh: ms7724: modify scan_timing for KEYSC
  sh: ms7724: Add sh_sir support
  sh: mach-ecovec24: Add sh_sir support
  sh: wire up SET/GET_UNALIGN_CTL.
  sh: allow alignment fault mode to be configured at kernel boot.
  sh: sh7724: Update FSI/SPU2 clock
  sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec
  sh: add sh7724 kick callback to clk_div4_table
  sh: introduce struct clk_div4_table
  sh: clock-cpg div4 set_rate() shift fix
  sh: Turn on speculative return for SH7785 and SH7786
  sh: Merge legacy and dynamic PMB modes.
  sh: Use uncached I/O helpers in PMB setup.
  sh: Provide uncached I/O helpers.
  ...

1 files changed, 72 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 000000000000..3e4ec66a0417
--- /dev/null
+++ b/arch/sh/boards/mach-sdk7786/fpga.c
@@ -0,0 +1,72 @@
+/*
+ * 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>
+#include <asm/sizes.h>
+
+#define FPGA_REGS_OFFSET	0x03fff800
+#define FPGA_REGS_SIZE		0x490
+
+/*
+ * The FPGA can be mapped in any of the generally available areas,
+ * so we attempt to scan for it using the fixed SRSTR read magic.
+ *
+ * Once the FPGA is located, the rest of the mapping data for the other
+ * components can be determined dynamically from its section mapping
+ * registers.
+ */
+static void __iomem *sdk7786_fpga_probe(void)
+{
+	unsigned long area;
+	void __iomem *base;
+
+	/*
+	 * Iterate over all of the areas where the FPGA could be mapped.
+	 * The possible range is anywhere from area 0 through 6, area 7
+	 * is reserved.
+	 */
+	for (area = PA_AREA0; area < PA_AREA7; area += SZ_64M) {
+		base = ioremap_nocache(area + FPGA_REGS_OFFSET, FPGA_REGS_SIZE);
+		if (!base) {
+			/* Failed to remap this area, move along. */
+			continue;
+		}
+
+		if (ioread16(base + SRSTR) == SRSTR_MAGIC)
+			return base;	/* Found it! */
+
+		iounmap(base);
+	}
+
+	return NULL;
+}
+
+void __iomem *sdk7786_fpga_base;
+
+void __init sdk7786_fpga_init(void)
+{
+	u16 version, date;
+
+	sdk7786_fpga_base = sdk7786_fpga_probe();
+	if (unlikely(!sdk7786_fpga_base)) {
+		panic("FPGA detection 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));
+}