Some clocks in the Allwinner SoCs clock units are direct, fixed,
multipliers or dividers from their parent.

Add support for such clocks.

Signed-off-by: Maxime Ripard <redacted>
---
 drivers/clk/sunxi-ng/Makefile           |  2 ++
 drivers/clk/sunxi-ng/ccu_fixed_factor.c | 42 +++++++++++++++++++++++++++
 drivers/clk/sunxi-ng/ccu_fixed_factor.h | 50 +++++++++++++++++++++++++++++++++
 3 files changed, 94 insertions(+)
 create mode 100644 drivers/clk/sunxi-ng/ccu_fixed_factor.c
 create mode 100644 drivers/clk/sunxi-ng/ccu_fixed_factor.h

diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index bd3461b0f38c..d76276736765 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile

@@ -1,2 +1,4 @@
 obj-y += ccu_common.o
 obj-y += ccu_reset.o
+
+obj-y += ccu_fixed_factor.o

diff --git a/drivers/clk/sunxi-ng/ccu_fixed_factor.c b/drivers/clk/sunxi-ng/ccu_fixed_factor.c
new file mode 100644
index 000000000000..75df8a854db5
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu_fixed_factor.c

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2016 Maxime Ripard
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk-provider.h>
+
+#include "ccu_fixed_factor.h"
+
+static unsigned long ccu_fixed_factor_recalc_rate(struct clk_hw *hw,
+                                                 unsigned long parent_rate)
+{
+       struct ccu_fixed_factor *fix = hw_to_ccu_fixed_factor(hw);
+
+       return parent_rate * fix->mult / fix->div;

+}
+
+static int ccu_fixed_factor_set_rate(struct clk_hw *hw, unsigned long rate,
+                                    unsigned long parent_rate)
+{
+       return 0;
+}
+
+const struct clk_ops ccu_fixed_factor_ops = {
+       .recalc_rate    = ccu_fixed_factor_recalc_rate,
+       .round_rate     = ccu_fixed_factor_round_rate,
+       .set_rate       = ccu_fixed_factor_set_rate,
+};

diff --git a/drivers/clk/sunxi-ng/ccu_fixed_factor.h b/drivers/clk/sunxi-ng/ccu_fixed_factor.h
new file mode 100644
index 000000000000..4e53dbc9d10b
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu_fixed_factor.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2016 Maxime Ripard. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _CCU_FIXED_FACTOR_H_
+#define _CCU_FIXED_FACTOR_H_
+
+#include <linux/clk-provider.h>
+
+#include "ccu_common.h"
+
+struct ccu_fixed_factor {
+       u16                     div;
+       u16                     mult;
+
+       struct ccu_common       common;
+};
+
+#define SUNXI_CCU_FIXED_FACTOR(_struct, _name, _parent,                        \
+                              _div, _mult, _flags)                     \
+       struct ccu_fixed_factor _struct = {                             \
+               .div    = _div,                                         \
+               .mult   = _mult,                                        \
+               .common = {                                             \
+                       .hw.init        = SUNXI_HW_INIT(_name,          \
+                                                       _parent,        \
+                                                       &ccu_fixed_factor_ops, \
+                                                       _flags),        \
+               },                                                      \
+       }
+
+static inline struct ccu_fixed_factor *hw_to_ccu_fixed_factor(struct clk_hw *hw)
+{
+       struct ccu_common *common = hw_to_ccu_common(hw);
+
+       return container_of(common, struct ccu_fixed_factor, common);
+}
+
+extern const struct clk_ops ccu_fixed_factor_ops;
+
+#endif /* _CCU_FIXED_FACTOR_H_ */
--

2.8.2