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clock.h

/*
 * Low level clock header file for Telechips TCC architecture
 * (C) 2010 Hans J. Koch <hjk@linutronix.de>
 *
 * Licensed under the GPL v2.
 */

#ifndef __ASM_ARCH_TCC_CLOCK_H__
#define __ASM_ARCH_TCC_CLOCK_H__

#ifndef __ASSEMBLY__

struct clk {
      struct clk *parent;
      /* id number of a root clock, 0 for normal clocks */
      int root_id;
      /* Reference count of clock enable/disable */
      int refcount;
      /* Address of associated BCLKCTRx register. Must be set. */
      void __iomem *bclkctr;
      /* Bit position for BCLKCTRx. Must be set. */
      int bclk_shift;
      /* Address of ACLKxxx register, if any. */
      void __iomem *aclkreg;
      /* get the current clock rate (always a fresh value) */
      unsigned long (*get_rate) (struct clk *);
      /* Function ptr to set the clock to a new rate. The rate must match a
         supported rate returned from round_rate. Leave blank if clock is not
         programmable */
      int (*set_rate) (struct clk *, unsigned long);
      /* Function ptr to round the requested clock rate to the nearest
         supported rate that is less than or equal to the requested rate. */
      unsigned long (*round_rate) (struct clk *, unsigned long);
      /* Function ptr to enable the clock. Leave blank if clock can not
         be gated. */
      int (*enable) (struct clk *);
      /* Function ptr to disable the clock. Leave blank if clock can not
         be gated. */
      void (*disable) (struct clk *);
      /* Function ptr to set the parent clock of the clock. */
      int (*set_parent) (struct clk *, struct clk *);
};

int clk_register(struct clk *clk);
void clk_unregister(struct clk *clk);

#endif /* __ASSEMBLY__ */
#endif /* __ASM_ARCH_MXC_CLOCK_H__ */

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