2 * linux/include/asm-arm/arch-omap/clock.h
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
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.
13 #ifndef __ARCH_ARM_OMAP_CLOCK_H
14 #define __ARCH_ARM_OMAP_CLOCK_H
19 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
29 const struct clksel_rate *rates;
33 void __iomem *mult_div1_reg;
41 struct list_head node;
48 void __iomem *enable_reg;
51 void (*recalc)(struct clk *);
52 int (*set_rate)(struct clk *, unsigned long);
53 long (*round_rate)(struct clk *, unsigned long);
54 void (*init)(struct clk *);
55 int (*enable)(struct clk *);
56 void (*disable)(struct clk *);
57 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
59 void __iomem *clksel_reg;
61 const struct clksel *clksel;
62 const struct dpll_data *dpll_data;
69 struct clk_functions {
70 int (*clk_enable)(struct clk *clk);
71 void (*clk_disable)(struct clk *clk);
72 long (*clk_round_rate)(struct clk *clk, unsigned long rate);
73 int (*clk_set_rate)(struct clk *clk, unsigned long rate);
74 int (*clk_set_parent)(struct clk *clk, struct clk *parent);
75 struct clk * (*clk_get_parent)(struct clk *clk);
76 void (*clk_allow_idle)(struct clk *clk);
77 void (*clk_deny_idle)(struct clk *clk);
78 void (*clk_disable_unused)(struct clk *clk);
81 extern unsigned int mpurate;
83 extern int clk_init(struct clk_functions * custom_clocks);
84 extern int clk_register(struct clk *clk);
85 extern void clk_unregister(struct clk *clk);
86 extern void propagate_rate(struct clk *clk);
87 extern void recalculate_root_clocks(void);
88 extern void followparent_recalc(struct clk * clk);
89 extern void clk_allow_idle(struct clk *clk);
90 extern void clk_deny_idle(struct clk *clk);
91 extern int clk_get_usecount(struct clk *clk);
92 extern void clk_enable_init_clocks(void);
95 #define RATE_CKCTL (1 << 0) /* Main fixed ratio clocks */
96 #define RATE_FIXED (1 << 1) /* Fixed clock rate */
97 #define RATE_PROPAGATES (1 << 2) /* Program children too */
98 #define VIRTUAL_CLOCK (1 << 3) /* Composite clock from table */
99 #define ALWAYS_ENABLED (1 << 4) /* Clock cannot be disabled */
100 #define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
101 #define VIRTUAL_IO_ADDRESS (1 << 6) /* Clock in virtual address */
102 #define CLOCK_IDLE_CONTROL (1 << 7)
103 #define CLOCK_NO_IDLE_PARENT (1 << 8)
104 #define DELAYED_APP (1 << 9) /* Delay application of clock */
105 #define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */
106 #define ENABLE_ON_INIT (1 << 11) /* Enable upon framework init */
107 #define INVERT_ENABLE (1 << 12) /* 0 enables, 1 disables */
108 /* bits 13-20 are currently free */
109 #define CLOCK_IN_OMAP310 (1 << 21)
110 #define CLOCK_IN_OMAP730 (1 << 22)
111 #define CLOCK_IN_OMAP1510 (1 << 23)
112 #define CLOCK_IN_OMAP16XX (1 << 24)
113 #define CLOCK_IN_OMAP242X (1 << 25)
114 #define CLOCK_IN_OMAP243X (1 << 26)
115 #define CLOCK_IN_OMAP343X (1 << 27)
116 #define PARENT_CONTROLS_CLOCK (1 << 28)
118 /* Clksel_rate flags */
119 #define DEFAULT_RATE (1 << 0)
120 #define RATE_IN_242X (1 << 1)
121 #define RATE_IN_243X (1 << 2)
122 #define RATE_IN_343X (1 << 3)
123 #define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)
126 /* CM_CLKSEL2_PLL.CORE_CLK_SRC options (24XX) */
127 #define CORE_CLK_SRC_32K 0
128 #define CORE_CLK_SRC_DPLL 1
129 #define CORE_CLK_SRC_DPLL_X2 2