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/*
* Common Clock definitions for various kernel files
*
* Copyright 2007-2008 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef _BFIN_CLOCKS_H
#define _BFIN_CLOCKS_H
#include <asm/dpmc.h>
#ifdef CONFIG_CCLK_DIV_1
# define CONFIG_CCLK_ACT_DIV CCLK_DIV1
# define CONFIG_CCLK_DIV 1
#endif
#ifdef CONFIG_CCLK_DIV_2
# define CONFIG_CCLK_ACT_DIV CCLK_DIV2
# define CONFIG_CCLK_DIV 2
#endif
#ifdef CONFIG_CCLK_DIV_4
# define CONFIG_CCLK_ACT_DIV CCLK_DIV4
# define CONFIG_CCLK_DIV 4
#endif
#ifdef CONFIG_CCLK_DIV_8
# define CONFIG_CCLK_ACT_DIV CCLK_DIV8
# define CONFIG_CCLK_DIV 8
#endif
#ifndef CONFIG_PLL_BYPASS
# ifndef CONFIG_CLKIN_HALF
# define CONFIG_VCO_HZ (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)
# else
# define CONFIG_VCO_HZ ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)/2)
# endif
# define CONFIG_CCLK_HZ (CONFIG_VCO_HZ/CONFIG_CCLK_DIV)
# define CONFIG_SCLK_HZ (CONFIG_VCO_HZ/CONFIG_SCLK_DIV)
#else
# define CONFIG_VCO_HZ (CONFIG_CLKIN_HZ)
# define CONFIG_CCLK_HZ (CONFIG_CLKIN_HZ)
# define CONFIG_SCLK_HZ (CONFIG_CLKIN_HZ)
# define CONFIG_VCO_MULT 0
#endif
#include <linux/clk.h>
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);
};
struct clk {
struct clk *parent;
const char *name;
unsigned long rate;
spinlock_t lock;
u32 flags;
const struct clk_ops *ops;
void __iomem *reg;
u32 mask;
u32 shift;
};
int clk_init(void);
#endif
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