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kernel/linux-imx6_3.14.28/arch/arm/mach-mmp/clock.h 1.71 KB
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  /*
   *  linux/arch/arm/mach-mmp/clock.h
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License version 2 as
   *  published by the Free Software Foundation.
   */
  
  #include <linux/clkdev.h>
  
  struct clkops {
  	void			(*enable)(struct clk *);
  	void			(*disable)(struct clk *);
  	unsigned long		(*getrate)(struct clk *);
  	int			(*setrate)(struct clk *, unsigned long);
  };
  
  struct clk {
  	const struct clkops	*ops;
  
  	void __iomem	*clk_rst;	/* clock reset control register */
  	int		fnclksel;	/* functional clock select (APBC) */
  	uint32_t	enable_val;	/* value for clock enable (APMU) */
  	unsigned long	rate;
  	int		enabled;
  };
  
  extern struct clkops apbc_clk_ops;
  extern struct clkops apmu_clk_ops;
  
  #define APBC_CLK(_name, _reg, _fnclksel, _rate)			\
  struct clk clk_##_name = {					\
  		.clk_rst	= APBC_##_reg,			\
  		.fnclksel	= _fnclksel,			\
  		.rate		= _rate,			\
  		.ops		= &apbc_clk_ops,		\
  }
  
  #define APBC_CLK_OPS(_name, _reg, _fnclksel, _rate, _ops)	\
  struct clk clk_##_name = {					\
  		.clk_rst	= APBC_##_reg,			\
  		.fnclksel	= _fnclksel,			\
  		.rate		= _rate,			\
  		.ops		= _ops,				\
  }
  
  #define APMU_CLK(_name, _reg, _eval, _rate)			\
  struct clk clk_##_name = {					\
  		.clk_rst	= APMU_##_reg,			\
  		.enable_val	= _eval,			\
  		.rate		= _rate,			\
  		.ops		= &apmu_clk_ops,		\
  }
  
  #define APMU_CLK_OPS(_name, _reg, _eval, _rate, _ops)		\
  struct clk clk_##_name = {					\
  		.clk_rst	= APMU_##_reg,			\
  		.enable_val	= _eval,			\
  		.rate		= _rate,			\
  		.ops		= _ops,				\
  }
  
  #define INIT_CLKREG(_clk, _devname, _conname)			\
  	{							\
  		.clk		= _clk,				\
  		.dev_id		= _devname,			\
  		.con_id		= _conname,			\
  	}
  
  extern struct clk clk_pxa168_gpio;
  extern struct clk clk_pxa168_timers;