2 * arch/arm/plat-omap/include/mach/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
21 int (*enable)(struct clk *);
22 void (*disable)(struct clk *);
25 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
35 const struct clksel_rate *rates;
39 void __iomem *mult_div1_reg;
42 struct clk *clk_bypass;
44 void __iomem *control_reg;
46 unsigned int rate_tolerance;
47 unsigned long last_rounded_rate;
54 # if defined(CONFIG_ARCH_OMAP3)
56 void __iomem *autoidle_reg;
57 void __iomem *idlest_reg;
70 struct list_head node;
71 const struct clkops *ops;
75 struct list_head children;
76 struct list_head sibling; /* node for children */
79 void __iomem *enable_reg;
80 unsigned long (*recalc)(struct clk *);
81 int (*set_rate)(struct clk *, unsigned long);
82 long (*round_rate)(struct clk *, unsigned long);
83 void (*init)(struct clk *);
86 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
88 void __iomem *clksel_reg;
90 const struct clksel *clksel;
91 struct dpll_data *dpll_data;
92 const char *clkdm_name;
93 struct clockdomain *clkdm;
98 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
99 struct dentry *dent; /* For visible tree hierarchy */
103 struct cpufreq_frequency_table;
105 struct clk_functions {
106 int (*clk_enable)(struct clk *clk);
107 void (*clk_disable)(struct clk *clk);
108 long (*clk_round_rate)(struct clk *clk, unsigned long rate);
109 int (*clk_set_rate)(struct clk *clk, unsigned long rate);
110 int (*clk_set_parent)(struct clk *clk, struct clk *parent);
111 void (*clk_allow_idle)(struct clk *clk);
112 void (*clk_deny_idle)(struct clk *clk);
113 void (*clk_disable_unused)(struct clk *clk);
114 #ifdef CONFIG_CPU_FREQ
115 void (*clk_init_cpufreq_table)(struct cpufreq_frequency_table **);
119 extern unsigned int mpurate;
121 extern int clk_init(struct clk_functions *custom_clocks);
122 extern void clk_init_one(struct clk *clk);
123 extern int clk_register(struct clk *clk);
124 extern void clk_reparent(struct clk *child, struct clk *parent);
125 extern void clk_unregister(struct clk *clk);
126 extern void propagate_rate(struct clk *clk);
127 extern void recalculate_root_clocks(void);
128 extern unsigned long followparent_recalc(struct clk *clk);
129 extern void clk_enable_init_clocks(void);
130 #ifdef CONFIG_CPU_FREQ
131 extern void clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
134 extern const struct clkops clkops_null;
138 #define RATE_FIXED (1 << 1) /* Fixed clock rate */
139 /* bits 2-4 are free */
140 #define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
141 #define CLOCK_IDLE_CONTROL (1 << 7)
142 #define CLOCK_NO_IDLE_PARENT (1 << 8)
143 #define DELAYED_APP (1 << 9) /* Delay application of clock */
144 #define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */
145 #define ENABLE_ON_INIT (1 << 11) /* Enable upon framework init */
146 #define INVERT_ENABLE (1 << 12) /* 0 enables, 1 disables */
147 /* bits 13-31 are currently free */
149 /* Clksel_rate flags */
150 #define DEFAULT_RATE (1 << 0)
151 #define RATE_IN_242X (1 << 1)
152 #define RATE_IN_243X (1 << 2)
153 #define RATE_IN_343X (1 << 3) /* rates common to all 343X */
154 #define RATE_IN_3430ES2 (1 << 4) /* 3430ES2 rates only */
156 #define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)