1 files changed, 78 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/sh3/clock-sh7710.c b/arch/sh/kernel/cpu/sh3/clock-sh7710.c
new file mode 100644
index 000000000000..4744c50ec449
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh3/clock-sh7710.c
@@ -0,0 +1,78 @@
+/*
+ * arch/sh/kernel/cpu/sh3/clock-sh7710.c
+ *
+ * SH7710 support for the clock framework
+ *
+ *  Copyright (C) 2005  Paul Mundt
+ *
+ * FRQCR parsing hacked out of arch/sh/kernel/time.c
+ *
+ *  Copyright (C) 1999  Tetsuya Okada & Niibe Yutaka
+ *  Copyright (C) 2000  Philipp Rumpf <prumpf@tux.org>
+ *  Copyright (C) 2002, 2003, 2004  Paul Mundt
+ *  Copyright (C) 2002  M. R. Brown  <mrbrown@linux-sh.org>
+ *
+ * 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/kernel.h>
+#include <asm/clock.h>
+#include <asm/freq.h>
+#include <asm/io.h>
+
+static int md_table[] = { 1, 2, 3, 4, 6, 8, 12 };
+
+static void master_clk_init(struct clk *clk)
+{
+        clk->rate *= md_table[ctrl_inw(FRQCR) & 0x0007];
+}
+
+static struct clk_ops sh7710_master_clk_ops = {
+        .init           = master_clk_init,
+};
+
+static void module_clk_recalc(struct clk *clk)
+{
+        int idx = (ctrl_inw(FRQCR) & 0x0007);
+        clk->rate = clk->parent->rate / md_table[idx];
+}
+
+static struct clk_ops sh7710_module_clk_ops = {
+        .recalc         = module_clk_recalc,
+};
+
+static void bus_clk_recalc(struct clk *clk)
+{
+        int idx = (ctrl_inw(FRQCR) & 0x0700) >> 8;
+        clk->rate = clk->parent->rate / md_table[idx];
+}
+
+static struct clk_ops sh7710_bus_clk_ops = {
+        .recalc         = bus_clk_recalc,
+};
+
+static void cpu_clk_recalc(struct clk *clk)
+{
+        int idx = (ctrl_inw(FRQCR) & 0x0070) >> 4;
+        clk->rate = clk->parent->rate / md_table[idx];
+}
+
+static struct clk_ops sh7710_cpu_clk_ops = {
+        .recalc         = cpu_clk_recalc,
+};
+
+static struct clk_ops *sh7710_clk_ops[] = {
+        &sh7710_master_clk_ops,
+        &sh7710_module_clk_ops,
+        &sh7710_bus_clk_ops,
+        &sh7710_cpu_clk_ops,
+};
+
+void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
+{
+        if (idx < ARRAY_SIZE(sh7710_clk_ops))
+                *ops = sh7710_clk_ops[idx];
+}
+