36ddf31b68
This adds a relatively simplistic clock framework for sh. The initial goal behind this is to clean up the arch/sh/kernel/time.c mess and to get the CPU subtype-specific frequency setting and calculation code moved somewhere more sensible. This only deals with the core clocks at the moment, though it's trivial for other drivers to define their own clocks as desired. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
#ifndef __ASM_SH_CLOCK_H
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#define __ASM_SH_CLOCK_H
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#include <linux/kref.h>
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#include <linux/list.h>
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#include <linux/seq_file.h>
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struct clk;
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struct clk_ops {
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void (*init)(struct clk *clk);
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void (*enable)(struct clk *clk);
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void (*disable)(struct clk *clk);
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void (*recalc)(struct clk *clk);
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int (*set_rate)(struct clk *clk, unsigned long rate);
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};
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struct clk {
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struct list_head node;
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const char *name;
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struct module *owner;
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struct clk *parent;
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struct clk_ops *ops;
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struct kref kref;
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unsigned long rate;
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unsigned long flags;
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};
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#define CLK_ALWAYS_ENABLED (1 << 0)
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#define CLK_RATE_PROPAGATES (1 << 1)
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/* Should be defined by processor-specific code */
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void arch_init_clk_ops(struct clk_ops **, int type);
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/* arch/sh/kernel/cpu/clock.c */
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int clk_init(void);
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int __clk_enable(struct clk *);
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int clk_enable(struct clk *);
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void __clk_disable(struct clk *);
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void clk_disable(struct clk *);
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int clk_set_rate(struct clk *, unsigned long rate);
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unsigned long clk_get_rate(struct clk *);
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void clk_recalc_rate(struct clk *);
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struct clk *clk_get(const char *id);
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void clk_put(struct clk *);
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int clk_register(struct clk *);
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void clk_unregister(struct clk *);
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int show_clocks(struct seq_file *m);
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#endif /* __ASM_SH_CLOCK_H */
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