[ARM] pxa: introduce clk support for PXA SoC clocks

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 43 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/clock.h b/arch/arm/mach-pxa/clock.h
new file mode 100644
index 000000000000..bc6b77e1592e
--- /dev/null
+++ b/arch/arm/mach-pxa/clock.h
@@ -0,0 +1,43 @@
+struct clk;
+
+struct clkops {
+        void                    (*enable)(struct clk *);
+        void                    (*disable)(struct clk *);
+        unsigned long           (*getrate)(struct clk *);
+};
+
+struct clk {
+        struct list_head        node;
+        const char              *name;
+        struct device           *dev;
+        const struct clkops     *ops;
+        unsigned long           rate;
+        unsigned int            cken;
+        unsigned int            delay;
+        unsigned int            enabled;
+};
+
+#define INIT_CKEN(_name, _cken, _rate, _delay, _dev)    \
+        {                                               \
+                .name   = _name,                        \
+                .dev    = _dev,                         \
+                .ops    = &clk_cken_ops,                \
+                .rate   = _rate,                        \
+                .cken   = CKEN_##_cken,                 \
+                .delay  = _delay,                       \
+        }
+
+#define INIT_CK(_name, _cken, _ops, _dev)               \
+        {                                               \
+                .name   = _name,                        \
+                .dev    = _dev,                         \
+                .ops    = _ops,                         \
+                .cken   = CKEN_##_cken,                 \
+        }
+
+extern const struct clkops clk_cken_ops;
+
+void clk_cken_enable(struct clk *clk);
+void clk_cken_disable(struct clk *clk);
+
+void clks_register(struct clk *clks, size_t num);