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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