1 files changed, 97 insertions, 0 deletions

diff --git a/arch/sh/include/asm/clock.h b/arch/sh/include/asm/clock.h
new file mode 100644
index 000000000000..720dfab7b15e
--- /dev/null
+++ b/arch/sh/include/asm/clock.h
@@ -0,0 +1,97 @@
+#ifndef __ASM_SH_CLOCK_H
+#define __ASM_SH_CLOCK_H
+
+#include <linux/kref.h>
+#include <linux/list.h>
+#include <linux/seq_file.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+struct clk;
+
+struct clk_ops {
+        void (*init)(struct clk *clk);
+        void (*enable)(struct clk *clk);
+        void (*disable)(struct clk *clk);
+        void (*recalc)(struct clk *clk);
+        int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);
+        long (*round_rate)(struct clk *clk, unsigned long rate);
+};
+
+struct clk {
+        struct list_head        node;
+        const char              *name;
+        int                     id;
+        struct module           *owner;
+
+        struct clk              *parent;
+        struct clk_ops          *ops;
+
+        struct kref             kref;
+
+        unsigned long           rate;
+        unsigned long           flags;
+        unsigned long           arch_flags;
+};
+
+#define CLK_ALWAYS_ENABLED      (1 << 0)
+#define CLK_RATE_PROPAGATES     (1 << 1)
+
+/* Should be defined by processor-specific code */
+void arch_init_clk_ops(struct clk_ops **, int type);
+
+/* arch/sh/kernel/cpu/clock.c */
+int clk_init(void);
+
+void clk_recalc_rate(struct clk *);
+
+int clk_register(struct clk *);
+void clk_unregister(struct clk *);
+
+static inline int clk_always_enable(const char *id)
+{
+        struct clk *clk;
+        int ret;
+
+        clk = clk_get(NULL, id);
+        if (IS_ERR(clk))
+                return PTR_ERR(clk);
+
+        ret = clk_enable(clk);
+        if (ret)
+                clk_put(clk);
+
+        return ret;
+}
+
+/* the exported API, in addition to clk_set_rate */
+/**
+ * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
+ * @clk: clock source
+ * @rate: desired clock rate in Hz
+ * @algo_id: algorithm id to be passed down to ops->set_rate
+ *
+ * Returns success (0) or negative errno.
+ */
+int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
+
+enum clk_sh_algo_id {
+        NO_CHANGE = 0,
+
+        IUS_N1_N1,
+        IUS_322,
+        IUS_522,
+        IUS_N11,
+
+        SB_N1,
+
+        SB3_N1,
+        SB3_32,
+        SB3_43,
+        SB3_54,
+
+        BP_N1,
+
+        IP_N1,
+};
+#endif /* __ASM_SH_CLOCK_H */