[mirror_ubuntu-bionic-kernel.git] / drivers / clk / sunxi-ng / ccu_mux.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _CCU_MUX_H_
#define _CCU_MUX_H_

#include <linux/clk-provider.h>

#include "ccu_common.h"

struct ccu_mux_fixed_prediv {
	u8	index;
	u16	div;
};

struct ccu_mux_var_prediv {
	u8	index;
	u8	shift;
	u8	width;
};

struct ccu_mux_internal {
	u8		shift;
	u8		width;
	const u8	*table;

	const struct ccu_mux_fixed_prediv	*fixed_predivs;
	u8		n_predivs;

	const struct ccu_mux_var_prediv		*var_predivs;
	u8		n_var_predivs;
};

#define _SUNXI_CCU_MUX_TABLE(_shift, _width, _table)	\
	{						\
		.shift	= _shift,			\
		.width	= _width,			\
		.table	= _table,			\
	}

#define _SUNXI_CCU_MUX(_shift, _width) \
	_SUNXI_CCU_MUX_TABLE(_shift, _width, NULL)

struct ccu_mux {
	u16			reg;
	u32			enable;

	struct ccu_mux_internal	mux;
	struct ccu_common	common;
};

#define SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, _table,	\
				     _reg, _shift, _width, _gate,	\
				     _flags)				\
	struct ccu_mux _struct = {					\
		.enable	= _gate,					\
		.mux	= _SUNXI_CCU_MUX_TABLE(_shift, _width, _table),	\
		.common	= {						\
			.reg		= _reg,				\
			.hw.init	= CLK_HW_INIT_PARENTS(_name,	\
							      _parents, \
							      &ccu_mux_ops, \
							      _flags),	\
		}							\
	}

#define SUNXI_CCU_MUX_WITH_GATE(_struct, _name, _parents, _reg,		\
				_shift, _width, _gate, _flags)		\
	SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, NULL,	\
				      _reg, _shift, _width, _gate,	\
				      _flags)

#define SUNXI_CCU_MUX(_struct, _name, _parents, _reg, _shift, _width,	\
		      _flags)						\
	SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, NULL,	\
				      _reg, _shift, _width, 0, _flags)

static inline struct ccu_mux *hw_to_ccu_mux(struct clk_hw *hw)
{
	struct ccu_common *common = hw_to_ccu_common(hw);

	return container_of(common, struct ccu_mux, common);
}

extern const struct clk_ops ccu_mux_ops;

unsigned long ccu_mux_helper_apply_prediv(struct ccu_common *common,
					  struct ccu_mux_internal *cm,
					  int parent_index,
					  unsigned long parent_rate);
int ccu_mux_helper_determine_rate(struct ccu_common *common,
				  struct ccu_mux_internal *cm,
				  struct clk_rate_request *req,
				  unsigned long (*round)(struct ccu_mux_internal *,
							 struct clk_hw *,
							 unsigned long *,
							 unsigned long,
							 void *),
				  void *data);
u8 ccu_mux_helper_get_parent(struct ccu_common *common,
			     struct ccu_mux_internal *cm);
int ccu_mux_helper_set_parent(struct ccu_common *common,
			      struct ccu_mux_internal *cm,
			      u8 index);

struct ccu_mux_nb {
	struct notifier_block	clk_nb;
	struct ccu_common	*common;
	struct ccu_mux_internal	*cm;

	u32	delay_us;	/* How many us to wait after reparenting */
	u8	bypass_index;	/* Which parent to temporarily use */
	u8	original_index;	/* This is set by the notifier callback */
};

#define to_ccu_mux_nb(_nb) container_of(_nb, struct ccu_mux_nb, clk_nb)

int ccu_mux_notifier_register(struct clk *clk, struct ccu_mux_nb *mux_nb);

#endif /* _CCU_MUX_H_ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
2a65ed42 MR	2	#ifndef _CCU_MUX_H_
	3	#define _CCU_MUX_H_
	4
	5	#include <linux/clk-provider.h>
	6
	7	#include "ccu_common.h"
	8
ff5294db CYT	9	struct ccu_mux_fixed_prediv {
	10	u8 index;
	11	u16 div;
	12	};
	13
13e0dde8 CYT	14	struct ccu_mux_var_prediv {
	15	u8 index;
	16	u8 shift;
	17	u8 width;
	18	};
	19
2a65ed42	20	struct ccu_mux_internal {
2b9c875c CYT	21	u8 shift;
	22	u8 width;
	23	const u8 *table;
2a65ed42	24
ff5294db CYT	25	const struct ccu_mux_fixed_prediv *fixed_predivs;
ff5294db CYT	26	u8 n_predivs;
2a65ed42	27
13e0dde8 CYT	28	const struct ccu_mux_var_prediv *var_predivs;
13e0dde8 CYT	29	u8 n_var_predivs;
2a65ed42 MR	30	};
2a65ed42 MR	31
2b9c875c CYT	32	#define _SUNXI_CCU_MUX_TABLE(_shift, _width, _table) \
	33	{ \
	34	.shift = _shift, \
	35	.width = _width, \
	36	.table = _table, \
2a65ed42 MR	37	}
2a65ed42 MR	38
2b9c875c CYT	39	#define _SUNXI_CCU_MUX(_shift, _width) \
	40	_SUNXI_CCU_MUX_TABLE(_shift, _width, NULL)
	41
2a65ed42 MR	42	struct ccu_mux {
	43	u16 reg;
	44	u32 enable;
	45
	46	struct ccu_mux_internal mux;
	47	struct ccu_common common;
	48	};
	49
13e91e45 MR	50	#define SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, _table, \
	51	_reg, _shift, _width, _gate, \
	52	_flags) \
2a65ed42	53	struct ccu_mux _struct = { \
13e91e45 MR	54	.enable = _gate, \
13e91e45 MR	55	.mux = _SUNXI_CCU_MUX_TABLE(_shift, _width, _table), \
2a65ed42 MR	56	.common = { \
	57	.reg = _reg, \
	58	.hw.init = CLK_HW_INIT_PARENTS(_name, \
	59	_parents, \
	60	&ccu_mux_ops, \
	61	_flags), \
	62	} \
	63	}
	64
	65	#define SUNXI_CCU_MUX_WITH_GATE(_struct, _name, _parents, _reg, \
	66	_shift, _width, _gate, _flags) \
13e91e45 MR	67	SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, NULL, \
	68	_reg, _shift, _width, _gate, \
	69	_flags)
	70
	71	#define SUNXI_CCU_MUX(_struct, _name, _parents, _reg, _shift, _width, \
	72	_flags) \
	73	SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, NULL, \
	74	_reg, _shift, _width, 0, _flags)
2a65ed42 MR	75
	76	static inline struct ccu_mux hw_to_ccu_mux(struct clk_hw hw)
	77	{
	78	struct ccu_common *common = hw_to_ccu_common(hw);
	79
	80	return container_of(common, struct ccu_mux, common);
	81	}
	82
	83	extern const struct clk_ops ccu_mux_ops;
	84
d754b159 MR	85	unsigned long ccu_mux_helper_apply_prediv(struct ccu_common *common,
	86	struct ccu_mux_internal *cm,
	87	int parent_index,
	88	unsigned long parent_rate);
2a65ed42 MR	89	int ccu_mux_helper_determine_rate(struct ccu_common *common,
	90	struct ccu_mux_internal *cm,
	91	struct clk_rate_request *req,
	92	unsigned long (round)(struct ccu_mux_internal ,
10a8d9b9 MR	93	struct clk_hw *,
10a8d9b9 MR	94	unsigned long *,
2a65ed42 MR	95	unsigned long,
	96	void *),
	97	void *data);
	98	u8 ccu_mux_helper_get_parent(struct ccu_common *common,
	99	struct ccu_mux_internal *cm);
	100	int ccu_mux_helper_set_parent(struct ccu_common *common,
	101	struct ccu_mux_internal *cm,
	102	u8 index);
	103
8adfb086 CYT	104	struct ccu_mux_nb {
	105	struct notifier_block clk_nb;
	106	struct ccu_common *common;
	107	struct ccu_mux_internal *cm;
	108
	109	u32 delay_us; /* How many us to wait after reparenting */
	110	u8 bypass_index; /* Which parent to temporarily use */
	111	u8 original_index; /* This is set by the notifier callback */
	112	};
	113
	114	#define to_ccu_mux_nb(_nb) container_of(_nb, struct ccu_mux_nb, clk_nb)
	115
	116	int ccu_mux_notifier_register(struct clk clk, struct ccu_mux_nb mux_nb);
	117
2a65ed42	118	#endif /* _CCU_MUX_H_ */