[deliverable/linux.git] / arch / mips / jz4740 / clock.h

/*
 *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
 *  JZ4740 SoC clock support
 *
 *  This program is free software; you can redistribute	 it and/or modify it
 *  under  the terms of	 the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the	License, or (at your
 *  option) any later version.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#ifndef __MIPS_JZ4740_CLOCK_H__
#define __MIPS_JZ4740_CLOCK_H__

#include <linux/list.h>

struct jz4740_clock_board_data {
	unsigned long ext_rate;
	unsigned long rtc_rate;
};

extern struct jz4740_clock_board_data jz4740_clock_bdata;

void jz4740_clock_suspend(void);
void jz4740_clock_resume(void);

struct clk;

struct clk_ops {
	unsigned long (*get_rate)(struct clk *clk);
	unsigned long (*round_rate)(struct clk *clk, unsigned long rate);
	int (*set_rate)(struct clk *clk, unsigned long rate);
	int (*enable)(struct clk *clk);
	int (*disable)(struct clk *clk);
	int (*is_enabled)(struct clk *clk);

	int (*set_parent)(struct clk *clk, struct clk *parent);

};

struct clk {
	const char *name;
	struct clk *parent;

	uint32_t gate_bit;

	const struct clk_ops *ops;

	struct list_head list;

#ifdef CONFIG_DEBUG_FS
	struct dentry *debugfs_entry;
	struct dentry *debugfs_parent_entry;
#endif

};

#define JZ4740_CLK_NOT_GATED ((uint32_t)-1)

int clk_is_enabled(struct clk *clk);

#ifdef CONFIG_DEBUG_FS
void jz4740_clock_debugfs_init(void);
void jz4740_clock_debugfs_add_clk(struct clk *clk);
void jz4740_clock_debugfs_update_parent(struct clk *clk);
#else
static inline void jz4740_clock_debugfs_init(void) {};
static inline void jz4740_clock_debugfs_add_clk(struct clk *clk) {};
static inline void jz4740_clock_debugfs_update_parent(struct clk *clk) {};
#endif

#endif
Commit	Line	Data
570a0bb8 LPC	1	/*
	2	* Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
	3	* JZ4740 SoC clock support
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License as published by the
	7	* Free Software Foundation; either version 2 of the License, or (at your
	8	* option) any later version.
	9	*
	10	* You should have received a copy of the GNU General Public License along
	11	* with this program; if not, write to the Free Software Foundation, Inc.,
	12	* 675 Mass Ave, Cambridge, MA 02139, USA.
	13	*
	14	*/
	15
	16	#ifndef __MIPS_JZ4740_CLOCK_H__
	17	#define __MIPS_JZ4740_CLOCK_H__
	18
	19	#include <linux/list.h>
	20
	21	struct jz4740_clock_board_data {
	22	unsigned long ext_rate;
	23	unsigned long rtc_rate;
	24	};
	25
	26	extern struct jz4740_clock_board_data jz4740_clock_bdata;
	27
	28	void jz4740_clock_suspend(void);
	29	void jz4740_clock_resume(void);
	30
	31	struct clk;
	32
	33	struct clk_ops {
	34	unsigned long (get_rate)(struct clk clk);
	35	unsigned long (round_rate)(struct clk clk, unsigned long rate);
	36	int (set_rate)(struct clk clk, unsigned long rate);
	37	int (enable)(struct clk clk);
	38	int (disable)(struct clk clk);
	39	int (is_enabled)(struct clk clk);
	40
	41	int (set_parent)(struct clk clk, struct clk *parent);
	42
	43	};
	44
	45	struct clk {
	46	const char *name;
	47	struct clk *parent;
	48
	49	uint32_t gate_bit;
	50
	51	const struct clk_ops *ops;
	52
	53	struct list_head list;
	54
	55	#ifdef CONFIG_DEBUG_FS
	56	struct dentry *debugfs_entry;
	57	struct dentry *debugfs_parent_entry;
	58	#endif
	59
	60	};
	61
	62	#define JZ4740_CLK_NOT_GATED ((uint32_t)-1)
	63
	64	int clk_is_enabled(struct clk *clk);
65
66	#ifdef CONFIG_DEBUG_FS
67	void jz4740_clock_debugfs_init(void);
68	void jz4740_clock_debugfs_add_clk(struct clk *clk);
69	void jz4740_clock_debugfs_update_parent(struct clk *clk);
70	#else
71	static inline void jz4740_clock_debugfs_init(void) {};
72	static inline void jz4740_clock_debugfs_add_clk(struct clk *clk) {};
73	static inline void jz4740_clock_debugfs_update_parent(struct clk *clk) {};
74	#endif
75
76	#endif