clk: sunxi-ng: Add N-K-factor clock support
Introduce support for clocks that use a combination of two linear
multipliers.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-10-maxime.ripard@free-electrons.com
diff --git a/drivers/clk/sunxi-ng/ccu_nk.h b/drivers/clk/sunxi-ng/ccu_nk.h
new file mode 100644
index 0000000..4b52da0
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu_nk.h
@@ -0,0 +1,71 @@
+/*
+ * 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_NK_H_
+#define _CCU_NK_H_
+
+#include <linux/clk-provider.h>
+
+#include "ccu_common.h"
+#include "ccu_div.h"
+#include "ccu_mult.h"
+
+/*
+ * struct ccu_nk - Definition of an N-K clock
+ *
+ * Clocks based on the formula parent * N * K
+ */
+struct ccu_nk {
+ u16 reg;
+ u32 enable;
+ u32 lock;
+
+ struct _ccu_mult n;
+ struct _ccu_mult k;
+
+ unsigned int fixed_post_div;
+
+ struct ccu_common common;
+};
+
+#define SUNXI_CCU_NK_WITH_GATE_LOCK_POSTDIV(_struct, _name, _parent, _reg, \
+ _nshift, _nwidth, \
+ _kshift, _kwidth, \
+ _gate, _lock, _postdiv, \
+ _flags) \
+ struct ccu_nk _struct = { \
+ .enable = _gate, \
+ .lock = _lock, \
+ .k = _SUNXI_CCU_MULT(_kshift, _kwidth), \
+ .n = _SUNXI_CCU_MULT(_nshift, _nwidth), \
+ .fixed_post_div = _postdiv, \
+ .common = { \
+ .reg = _reg, \
+ .features = CCU_FEATURE_FIXED_POSTDIV, \
+ .hw.init = CLK_HW_INIT(_name, \
+ _parent, \
+ &ccu_nk_ops, \
+ _flags), \
+ }, \
+ }
+
+static inline struct ccu_nk *hw_to_ccu_nk(struct clk_hw *hw)
+{
+ struct ccu_common *common = hw_to_ccu_common(hw);
+
+ return container_of(common, struct ccu_nk, common);
+}
+
+extern const struct clk_ops ccu_nk_ops;
+
+#endif /* _CCU_NK_H_ */