mirror of https://gitee.com/openkylin/linux.git
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
|
/*
|
||
|
|
* 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
|