[deliverable/linux.git] / include / asm-sh / clock.h

#ifndef __ASM_SH_CLOCK_H
#define __ASM_SH_CLOCK_H

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

struct clk;

struct clk_ops {
	void (*init)(struct clk *clk);
	void (*enable)(struct clk *clk);
	void (*disable)(struct clk *clk);
	void (*recalc)(struct clk *clk);
	int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);
	long (*round_rate)(struct clk *clk, unsigned long rate);
};

struct clk {
	struct list_head	node;
	const char		*name;
	int			id;
	struct module		*owner;

	struct clk		*parent;
	struct clk_ops		*ops;

	struct kref		kref;

	unsigned long		rate;
	unsigned long		flags;
};

#define CLK_ALWAYS_ENABLED	(1 << 0)
#define CLK_RATE_PROPAGATES	(1 << 1)

/* Should be defined by processor-specific code */
void arch_init_clk_ops(struct clk_ops **, int type);

/* arch/sh/kernel/cpu/clock.c */
int clk_init(void);

void clk_recalc_rate(struct clk *);

int clk_register(struct clk *);
void clk_unregister(struct clk *);

/* the exported API, in addition to clk_set_rate */
/**
 * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
 * @clk: clock source
 * @rate: desired clock rate in Hz
 * @algo_id: algorithm id to be passed down to ops->set_rate
 *
 * Returns success (0) or negative errno.
 */
int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);

enum clk_sh_algo_id {
	NO_CHANGE = 0,

	IUS_N1_N1,
	IUS_322,
	IUS_522,
	IUS_N11,

	SB_N1,

	SB3_N1,
	SB3_32,
	SB3_43,
	SB3_54,

	BP_N1,

	IP_N1,
};
#endif /* __ASM_SH_CLOCK_H */
Commit	Line	Data
36ddf31b PM	1	#ifndef __ASM_SH_CLOCK_H
	2	#define __ASM_SH_CLOCK_H
	3
	4	#include <linux/kref.h>
	5	#include <linux/list.h>
	6	#include <linux/seq_file.h>
1d118562	7	#include <linux/clk.h>
36ddf31b PM	8
	9	struct clk;
	10
	11	struct clk_ops {
	12	void (init)(struct clk clk);
	13	void (enable)(struct clk clk);
	14	void (disable)(struct clk clk);
	15	void (recalc)(struct clk clk);
1929cb34	16	int (set_rate)(struct clk clk, unsigned long rate, int algo_id);
f6991b04	17	long (round_rate)(struct clk clk, unsigned long rate);
36ddf31b PM	18	};
	19
	20	struct clk {
	21	struct list_head node;
	22	const char *name;
1d118562	23	int id;
36ddf31b PM	24	struct module *owner;
	25
	26	struct clk *parent;
	27	struct clk_ops *ops;
	28
	29	struct kref kref;
	30
	31	unsigned long rate;
	32	unsigned long flags;
	33	};
	34
	35	#define CLK_ALWAYS_ENABLED (1 << 0)
	36	#define CLK_RATE_PROPAGATES (1 << 1)
	37
	38	/* Should be defined by processor-specific code */
	39	void arch_init_clk_ops(struct clk_ops **, int type);
	40
	41	/* arch/sh/kernel/cpu/clock.c */
	42	int clk_init(void);
	43
36ddf31b PM	44	void clk_recalc_rate(struct clk *);
36ddf31b PM	45
36ddf31b PM	46	int clk_register(struct clk *);
	47	void clk_unregister(struct clk *);
	48
1929cb34	49	/* the exported API, in addition to clk_set_rate */
	50	/**
	51	* clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
	52	* @clk: clock source
	53	* @rate: desired clock rate in Hz
	54	* @algo_id: algorithm id to be passed down to ops->set_rate
	55	*
	56	* Returns success (0) or negative errno.
	57	*/
	58	int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
	59
	60	enum clk_sh_algo_id {
	61	NO_CHANGE = 0,
	62
	63	IUS_N1_N1,
	64	IUS_322,
	65	IUS_522,
	66	IUS_N11,
	67
	68	SB_N1,
	69
	70	SB3_N1,
	71	SB3_32,
	72	SB3_43,
	73	SB3_54,
	74
	75	BP_N1,
	76
	77	IP_N1,
	78	};
36ddf31b	79	#endif /* __ASM_SH_CLOCK_H */