LXR linux/arch/mips/include/asm/clock.h

   1#ifndef __ASM_MIPS_CLOCK_H
   2#define __ASM_MIPS_CLOCK_H
   3
   4#include <linux/kref.h>
   5#include <linux/list.h>
   6#include <linux/seq_file.h>
   7#include <linux/clk.h>
   8
   9extern void (*cpu_wait) (void);
  10
  11struct clk;
  12
  13struct clk_ops {
  14        void (*init) (struct clk *clk);
  15        void (*enable) (struct clk *clk);
  16        void (*disable) (struct clk *clk);
  17        void (*recalc) (struct clk *clk);
  18        int (*set_rate) (struct clk *clk, unsigned long rate, int algo_id);
  19        long (*round_rate) (struct clk *clk, unsigned long rate);
  20};
  21
  22struct clk {
  23        struct list_head node;
  24        const char *name;
  25        int id;
  26        struct module *owner;
  27
  28        struct clk *parent;
  29        struct clk_ops *ops;
  30
  31        struct kref kref;
  32
  33        unsigned long rate;
  34        unsigned long flags;
  35};
  36
  37#define CLK_ALWAYS_ENABLED      (1 << 0)
  38#define CLK_RATE_PROPAGATES     (1 << 1)
  39
  40/* Should be defined by processor-specific code */
  41void arch_init_clk_ops(struct clk_ops **, int type);
  42
  43int clk_init(void);
  44
  45int __clk_enable(struct clk *);
  46void __clk_disable(struct clk *);
  47
  48void clk_recalc_rate(struct clk *);
  49
  50int clk_register(struct clk *);
  51void clk_unregister(struct clk *);
  52
  53/* the exported API, in addition to clk_set_rate */
  54/**
  55 * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
  56 * @clk: clock source
  57 * @rate: desired clock rate in Hz
  58 * @algo_id: algorithm id to be passed down to ops->set_rate
  59 *
  60 * Returns success (0) or negative errno.
  61 */
  62int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
  63
  64#endif                          /* __ASM_MIPS_CLOCK_H */
  65