[linux-2.6-block.git] / include / linux / sh_clk.h

#ifndef __SH_CLOCK_H
#define __SH_CLOCK_H

#include <linux/list.h>
#include <linux/seq_file.h>
#include <linux/cpufreq.h>
#include <linux/types.h>
#include <linux/kref.h>
#include <linux/clk.h>
#include <linux/err.h>

struct clk;

struct clk_mapping {
	phys_addr_t		phys;
	void __iomem		*base;
	unsigned long		len;
	struct kref		ref;
};

struct clk_ops {
#ifdef CONFIG_SH_CLK_CPG_LEGACY
	void (*init)(struct clk *clk);
#endif
	int (*enable)(struct clk *clk);
	void (*disable)(struct clk *clk);
	unsigned long (*recalc)(struct clk *clk);
	int (*set_rate)(struct clk *clk, unsigned long rate);
	int (*set_parent)(struct clk *clk, struct clk *parent);
	long (*round_rate)(struct clk *clk, unsigned long rate);
};

struct clk {
	struct list_head	node;
	struct clk		*parent;
	struct clk		**parent_table;	/* list of parents to */
	unsigned short		parent_num;	/* choose between */
	unsigned char		src_shift;	/* source clock field in the */
	unsigned char		src_width;	/* configuration register */
	struct clk_ops		*ops;

	struct list_head	children;
	struct list_head	sibling;	/* node for children */

	int			usecount;

	unsigned long		rate;
	unsigned long		flags;

	void __iomem		*enable_reg;
	unsigned int		enable_bit;

	unsigned long		arch_flags;
	void			*priv;
	struct dentry		*dentry;
	struct clk_mapping	*mapping;
	struct cpufreq_frequency_table *freq_table;
	unsigned int		nr_freqs;
};

#define CLK_ENABLE_ON_INIT	(1 << 0)

/* drivers/sh/clk.c */
unsigned long followparent_recalc(struct clk *);
void recalculate_root_clocks(void);
void propagate_rate(struct clk *);
int clk_reparent(struct clk *child, struct clk *parent);
int clk_register(struct clk *);
void clk_unregister(struct clk *);
void clk_enable_init_clocks(void);

struct clk_div_mult_table {
	unsigned int *divisors;
	unsigned int nr_divisors;
	unsigned int *multipliers;
	unsigned int nr_multipliers;
};

struct cpufreq_frequency_table;
void clk_rate_table_build(struct clk *clk,
			  struct cpufreq_frequency_table *freq_table,
			  int nr_freqs,
			  struct clk_div_mult_table *src_table,
			  unsigned long *bitmap);

long clk_rate_table_round(struct clk *clk,
			  struct cpufreq_frequency_table *freq_table,
			  unsigned long rate);

int clk_rate_table_find(struct clk *clk,
			struct cpufreq_frequency_table *freq_table,
			unsigned long rate);

long clk_rate_div_range_round(struct clk *clk, unsigned int div_min,
			      unsigned int div_max, unsigned long rate);

long clk_round_parent(struct clk *clk, unsigned long target,
		      unsigned long *best_freq, unsigned long *parent_freq,
		      unsigned int div_min, unsigned int div_max);

#define SH_CLK_MSTP32(_parent, _enable_reg, _enable_bit, _flags)	\
{									\
	.parent		= _parent,					\
	.enable_reg	= (void __iomem *)_enable_reg,			\
	.enable_bit	= _enable_bit,					\
	.flags		= _flags,					\
}

int sh_clk_mstp32_register(struct clk *clks, int nr);

#define SH_CLK_DIV4(_parent, _reg, _shift, _div_bitmap, _flags)	\
{								\
	.parent = _parent,					\
	.enable_reg = (void __iomem *)_reg,			\
	.enable_bit = _shift,					\
	.arch_flags = _div_bitmap,				\
	.flags = _flags,					\
}

struct clk_div4_table {
	struct clk_div_mult_table *div_mult_table;
	void (*kick)(struct clk *clk);
};

int sh_clk_div4_register(struct clk *clks, int nr,
			 struct clk_div4_table *table);
int sh_clk_div4_enable_register(struct clk *clks, int nr,
			 struct clk_div4_table *table);
int sh_clk_div4_reparent_register(struct clk *clks, int nr,
			 struct clk_div4_table *table);

#define SH_CLK_DIV6_EXT(_parent, _reg, _flags, _parents,	\
			_num_parents, _src_shift, _src_width)	\
{								\
	.parent = _parent,					\
	.enable_reg = (void __iomem *)_reg,			\
	.flags = _flags,					\
	.parent_table = _parents,				\
	.parent_num = _num_parents,				\
	.src_shift = _src_shift,				\
	.src_width = _src_width,				\
}

#define SH_CLK_DIV6(_parent, _reg, _flags)			\
	SH_CLK_DIV6_EXT(_parent, _reg, _flags, NULL, 0, 0, 0)

int sh_clk_div6_register(struct clk *clks, int nr);
int sh_clk_div6_reparent_register(struct clk *clks, int nr);

#define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
#define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk }
#define CLKDEV_ICK_ID(_cid, _did, _clk) { .con_id = _cid, .dev_id = _did, .clk = _clk }

#endif /* __SH_CLOCK_H */
Commit	Line	Data
d28bdf05 MD	1	#ifndef __SH_CLOCK_H
	2	#define __SH_CLOCK_H
	3
	4	#include <linux/list.h>
	5	#include <linux/seq_file.h>
	6	#include <linux/cpufreq.h>
28085bc5 PM	7	#include <linux/types.h>
28085bc5 PM	8	#include <linux/kref.h>
d28bdf05 MD	9	#include <linux/clk.h>
	10	#include <linux/err.h>
	11
	12	struct clk;
	13
28085bc5 PM	14	struct clk_mapping {
	15	phys_addr_t phys;
	16	void __iomem *base;
	17	unsigned long len;
	18	struct kref ref;
	19	};
	20
d28bdf05	21	struct clk_ops {
549015c3	22	#ifdef CONFIG_SH_CLK_CPG_LEGACY
d28bdf05	23	void (init)(struct clk clk);
549015c3	24	#endif
d28bdf05 MD	25	int (enable)(struct clk clk);
	26	void (disable)(struct clk clk);
	27	unsigned long (recalc)(struct clk clk);
35a96c73	28	int (set_rate)(struct clk clk, unsigned long rate);
d28bdf05 MD	29	int (set_parent)(struct clk clk, struct clk *parent);
	30	long (round_rate)(struct clk clk, unsigned long rate);
	31	};
	32
	33	struct clk {
	34	struct list_head node;
d28bdf05	35	struct clk *parent;
b5272b50 GL	36	struct clk *parent_table; / list of parents to */
	37	unsigned short parent_num; /* choose between */
	38	unsigned char src_shift; /* source clock field in the */
	39	unsigned char src_width; /* configuration register */
d28bdf05 MD	40	struct clk_ops *ops;
	41
	42	struct list_head children;
	43	struct list_head sibling; /* node for children */
	44
	45	int usecount;
	46
	47	unsigned long rate;
	48	unsigned long flags;
	49
	50	void __iomem *enable_reg;
	51	unsigned int enable_bit;
	52
	53	unsigned long arch_flags;
	54	void *priv;
	55	struct dentry *dentry;
28085bc5	56	struct clk_mapping *mapping;
d28bdf05	57	struct cpufreq_frequency_table *freq_table;
f586903d	58	unsigned int nr_freqs;
d28bdf05 MD	59	};
	60
	61	#define CLK_ENABLE_ON_INIT (1 << 0)
	62
a71ba096	63	/* drivers/sh/clk.c */
d28bdf05 MD	64	unsigned long followparent_recalc(struct clk *);
	65	void recalculate_root_clocks(void);
	66	void propagate_rate(struct clk *);
	67	int clk_reparent(struct clk child, struct clk parent);
	68	int clk_register(struct clk *);
	69	void clk_unregister(struct clk *);
8b5ee113	70	void clk_enable_init_clocks(void);
d28bdf05	71
d28bdf05 MD	72	struct clk_div_mult_table {
	73	unsigned int *divisors;
	74	unsigned int nr_divisors;
	75	unsigned int *multipliers;
	76	unsigned int nr_multipliers;
	77	};
	78
	79	struct cpufreq_frequency_table;
	80	void clk_rate_table_build(struct clk *clk,
	81	struct cpufreq_frequency_table *freq_table,
	82	int nr_freqs,
	83	struct clk_div_mult_table *src_table,
	84	unsigned long *bitmap);
	85
	86	long clk_rate_table_round(struct clk *clk,
	87	struct cpufreq_frequency_table *freq_table,
	88	unsigned long rate);
	89
	90	int clk_rate_table_find(struct clk *clk,
	91	struct cpufreq_frequency_table *freq_table,
	92	unsigned long rate);
	93
8e122db6 PM	94	long clk_rate_div_range_round(struct clk *clk, unsigned int div_min,
	95	unsigned int div_max, unsigned long rate);
	96
6af26c6c GL	97	long clk_round_parent(struct clk *clk, unsigned long target,
	98	unsigned long best_freq, unsigned long parent_freq,
	99	unsigned int div_min, unsigned int div_max);
	100
d28bdf05 MD	101	#define SH_CLK_MSTP32(_parent, _enable_reg, _enable_bit, _flags) \
	102	{ \
	103	.parent = _parent, \
	104	.enable_reg = (void __iomem *)_enable_reg, \
	105	.enable_bit = _enable_bit, \
	106	.flags = _flags, \
	107	}
	108
	109	int sh_clk_mstp32_register(struct clk *clks, int nr);
	110
	111	#define SH_CLK_DIV4(_parent, _reg, _shift, _div_bitmap, _flags) \
	112	{ \
	113	.parent = _parent, \
	114	.enable_reg = (void __iomem *)_reg, \
	115	.enable_bit = _shift, \
	116	.arch_flags = _div_bitmap, \
	117	.flags = _flags, \
	118	}
	119
	120	struct clk_div4_table {
	121	struct clk_div_mult_table *div_mult_table;
	122	void (kick)(struct clk clk);
	123	};
	124
	125	int sh_clk_div4_register(struct clk *clks, int nr,
	126	struct clk_div4_table *table);
	127	int sh_clk_div4_enable_register(struct clk *clks, int nr,
	128	struct clk_div4_table *table);
	129	int sh_clk_div4_reparent_register(struct clk *clks, int nr,
	130	struct clk_div4_table *table);
	131
b3dd51a8 GL	132	#define SH_CLK_DIV6_EXT(_parent, _reg, _flags, _parents, \
	133	_num_parents, _src_shift, _src_width) \
	134	{ \
	135	.parent = _parent, \
	136	.enable_reg = (void __iomem *)_reg, \
	137	.flags = _flags, \
	138	.parent_table = _parents, \
	139	.parent_num = _num_parents, \
	140	.src_shift = _src_shift, \
	141	.src_width = _src_width, \
d28bdf05 MD	142	}
d28bdf05 MD	143
b3dd51a8 GL	144	#define SH_CLK_DIV6(_parent, _reg, _flags) \
	145	SH_CLK_DIV6_EXT(_parent, _reg, _flags, NULL, 0, 0, 0)
	146
d28bdf05	147	int sh_clk_div6_register(struct clk *clks, int nr);
b3dd51a8	148	int sh_clk_div6_reparent_register(struct clk *clks, int nr);
d28bdf05	149
1522043b KM	150	#define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
	151	#define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk }
	152	#define CLKDEV_ICK_ID(_cid, _did, _clk) { .con_id = _cid, .dev_id = _did, .clk = _clk }
	153
d28bdf05	154	#endif /* __SH_CLOCK_H */