fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sh / clock.h
blobb550a27a7042c85bc856a39b0eec86dcba0ca9a8
1 #ifndef __ASM_SH_CLOCK_H
2 #define __ASM_SH_CLOCK_H
4 #include <linux/kref.h>
5 #include <linux/list.h>
6 #include <linux/seq_file.h>
7 #include <linux/clk.h>
9 struct clk;
11 struct clk_ops {
12 void (*init)(struct clk *clk);
13 void (*enable)(struct clk *clk);
14 void (*disable)(struct clk *clk);
15 void (*recalc)(struct clk *clk);
16 int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);
17 long (*round_rate)(struct clk *clk, unsigned long rate);
20 struct clk {
21 struct list_head node;
22 const char *name;
23 int id;
24 struct module *owner;
26 struct clk *parent;
27 struct clk_ops *ops;
29 struct kref kref;
31 unsigned long rate;
32 unsigned long flags;
35 #define CLK_ALWAYS_ENABLED (1 << 0)
36 #define CLK_RATE_PROPAGATES (1 << 1)
38 /* Should be defined by processor-specific code */
39 void arch_init_clk_ops(struct clk_ops **, int type);
41 /* arch/sh/kernel/cpu/clock.c */
42 int clk_init(void);
44 int __clk_enable(struct clk *);
45 void __clk_disable(struct clk *);
47 void clk_recalc_rate(struct clk *);
49 int clk_register(struct clk *);
50 void clk_unregister(struct clk *);
52 /* the exported API, in addition to clk_set_rate */
53 /**
54 * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
55 * @clk: clock source
56 * @rate: desired clock rate in Hz
57 * @algo_id: algorithm id to be passed down to ops->set_rate
59 * Returns success (0) or negative errno.
61 int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
63 enum clk_sh_algo_id {
64 NO_CHANGE = 0,
66 IUS_N1_N1,
67 IUS_322,
68 IUS_522,
69 IUS_N11,
71 SB_N1,
73 SB3_N1,
74 SB3_32,
75 SB3_43,
76 SB3_54,
78 BP_N1,
80 IP_N1,
82 #endif /* __ASM_SH_CLOCK_H */