[deliverable/linux.git] / drivers / clk / sunxi-ng / ccu_mux.h

#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_internal {
	u8		shift;
	u8		width;
	const u8	*table;

	const struct ccu_mux_fixed_prediv	*fixed_predivs;
	u8		n_predivs;

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

#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;

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