1/*
2 *  linux/include/asm-arm/arch-omap/clock.h
3 *
4 *  Copyright (C) 2004 - 2005 Nokia corporation
5 *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
6 *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#ifndef __ARCH_ARM_OMAP_CLOCK_H
14#define __ARCH_ARM_OMAP_CLOCK_H
15
16struct module;
17
18struct clk {
19	struct list_head	node;
20	struct module		*owner;
21	const char		*name;
22	int			id;
23	struct clk		*parent;
24	unsigned long		rate;
25	__u32			flags;
26	void __iomem		*enable_reg;
27	__u8			enable_bit;
28	__u8			rate_offset;
29	__u8			src_offset;
30	__s8			usecount;
31	void			(*recalc)(struct clk *);
32	int			(*set_rate)(struct clk *, unsigned long);
33	long			(*round_rate)(struct clk *, unsigned long);
34	void			(*init)(struct clk *);
35	int			(*enable)(struct clk *);
36	void			(*disable)(struct clk *);
37};
38
39struct clk_functions {
40	int		(*clk_enable)(struct clk *clk);
41	void		(*clk_disable)(struct clk *clk);
42	long		(*clk_round_rate)(struct clk *clk, unsigned long rate);
43	int		(*clk_set_rate)(struct clk *clk, unsigned long rate);
44	int		(*clk_set_parent)(struct clk *clk, struct clk *parent);
45	struct clk *	(*clk_get_parent)(struct clk *clk);
46	void		(*clk_allow_idle)(struct clk *clk);
47	void		(*clk_deny_idle)(struct clk *clk);
48	void		(*clk_disable_unused)(struct clk *clk);
49};
50
51extern unsigned int mpurate;
52
53extern int clk_init(struct clk_functions * custom_clocks);
54extern int clk_register(struct clk *clk);
55extern void clk_unregister(struct clk *clk);
56extern void propagate_rate(struct clk *clk);
57extern void followparent_recalc(struct clk * clk);
58extern void clk_allow_idle(struct clk *clk);
59extern void clk_deny_idle(struct clk *clk);
60extern int clk_get_usecount(struct clk *clk);
61
62/* Clock flags */
63#define RATE_CKCTL		(1 << 0)	/* Main fixed ratio clocks */
64#define RATE_FIXED		(1 << 1)	/* Fixed clock rate */
65#define RATE_PROPAGATES		(1 << 2)	/* Program children too */
66#define VIRTUAL_CLOCK		(1 << 3)	/* Composite clock from table */
67#define ALWAYS_ENABLED		(1 << 4)	/* Clock cannot be disabled */
68#define ENABLE_REG_32BIT	(1 << 5)	/* Use 32-bit access */
69#define VIRTUAL_IO_ADDRESS	(1 << 6)	/* Clock in virtual address */
70#define CLOCK_IDLE_CONTROL	(1 << 7)
71#define CLOCK_NO_IDLE_PARENT	(1 << 8)
72#define DELAYED_APP		(1 << 9)	/* Delay application of clock */
73#define CONFIG_PARTICIPANT	(1 << 10)	/* Fundamental clock */
74#define CM_MPU_SEL1		(1 << 11)	/* Domain divider/source */
75#define CM_DSP_SEL1		(1 << 12)
76#define CM_GFX_SEL1		(1 << 13)
77#define CM_MODEM_SEL1		(1 << 14)
78#define CM_CORE_SEL1		(1 << 15)	/* Sets divider for many */
79#define CM_CORE_SEL2		(1 << 16)	/* sets parent for GPT */
80#define CM_WKUP_SEL1		(1 << 17)
81#define CM_PLL_SEL1		(1 << 18)
82#define CM_PLL_SEL2		(1 << 19)
83#define CM_SYSCLKOUT_SEL1	(1 << 20)
84#define CLOCK_IN_OMAP310	(1 << 21)
85#define CLOCK_IN_OMAP730	(1 << 22)
86#define CLOCK_IN_OMAP1510	(1 << 23)
87#define CLOCK_IN_OMAP16XX	(1 << 24)
88#define CLOCK_IN_OMAP242X	(1 << 25)
89#define CLOCK_IN_OMAP243X	(1 << 26)
90
91#endif
92