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
   9 extern void (*cpu_wait) (void);
  10
  11 struct clk;
  12
  13 struct 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
  22 struct 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 */
  41 void arch_init_clk_ops(struct clk_ops **, int type);
  42
  43 int clk_init(void);
  44
  45 int __clk_enable(struct clk *);
  46 void __clk_disable(struct clk *);
  47
  48 void clk_recalc_rate(struct clk *);
  49
  50 int clk_register(struct clk *);
  51 void 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  */
  62 int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
  63
  64 #endif                          /* __ASM_MIPS_CLOCK_H */