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 */ 65