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
16 #include <linux/list.h>
23 int (*enable)(struct clk *);
24 void (*disable)(struct clk *);
25 void (*find_idlest)(struct clk *, void __iomem **, u8 *);
26 void (*find_companion)(struct clk *, void __iomem **, u8 *);
29 #ifdef CONFIG_ARCH_OMAP2PLUS
39 const struct clksel_rate *rates;
43 void __iomem *mult_div1_reg;
46 struct clk *clk_bypass;
48 void __iomem *control_reg;
50 unsigned int rate_tolerance;
51 unsigned long last_rounded_rate;
58 #if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
60 void __iomem *autoidle_reg;
61 void __iomem *idlest_reg;
74 struct list_head node;
75 const struct clkops *ops;
79 struct list_head children;
80 struct list_head sibling; /* node for children */
83 void __iomem *enable_reg;
84 unsigned long (*recalc)(struct clk *);
85 int (*set_rate)(struct clk *, unsigned long);
86 long (*round_rate)(struct clk *, unsigned long);
87 void (*init)(struct clk *);
91 #ifdef CONFIG_ARCH_OMAP2PLUS
92 void __iomem *clksel_reg;
94 const struct clksel *clksel;
95 struct dpll_data *dpll_data;
96 const char *clkdm_name;
97 struct clockdomain *clkdm;
102 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
103 struct dentry *dent; /* For visible tree hierarchy */
107 struct cpufreq_frequency_table;
109 struct clk_functions {
110 int (*clk_enable)(struct clk *clk);
111 void (*clk_disable)(struct clk *clk);
112 long (*clk_round_rate)(struct clk *clk, unsigned long rate);
113 int (*clk_set_rate)(struct clk *clk, unsigned long rate);
114 int (*clk_set_parent)(struct clk *clk, struct clk *parent);
115 void (*clk_allow_idle)(struct clk *clk);
116 void (*clk_deny_idle)(struct clk *clk);
117 void (*clk_disable_unused)(struct clk *clk);
118 #ifdef CONFIG_CPU_FREQ
119 void (*clk_init_cpufreq_table)(struct cpufreq_frequency_table **);
120 void (*clk_exit_cpufreq_table)(struct cpufreq_frequency_table **);
126 extern int clk_init(struct clk_functions *custom_clocks);
127 extern void clk_preinit(struct clk *clk);
128 extern int clk_register(struct clk *clk);
129 extern void clk_reparent(struct clk *child, struct clk *parent);
130 extern void clk_unregister(struct clk *clk);
131 extern void propagate_rate(struct clk *clk);
132 extern void recalculate_root_clocks(void);
133 extern unsigned long followparent_recalc(struct clk *clk);
134 extern void clk_enable_init_clocks(void);
135 unsigned long omap_fixed_divisor_recalc(struct clk *clk);
136 #ifdef CONFIG_CPU_FREQ
137 extern void clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
138 extern void clk_exit_cpufreq_table(struct cpufreq_frequency_table **table);
141 extern const struct clkops clkops_null;
145 #define RATE_FIXED (1 << 1) /* Fixed clock rate */
146 /* bits 2-4 are free */
147 #define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
148 #define CLOCK_IDLE_CONTROL (1 << 7)
149 #define CLOCK_NO_IDLE_PARENT (1 << 8)
150 #define DELAYED_APP (1 << 9) /* Delay application of clock */
151 #define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */
152 #define ENABLE_ON_INIT (1 << 11) /* Enable upon framework init */
153 #define INVERT_ENABLE (1 << 12) /* 0 enables, 1 disables */
154 #define CLOCK_IN_OMAP4430 (1 << 13)
155 #define ALWAYS_ENABLED (1 << 14)
156 /* bits 13-31 are currently free */
158 /* Clksel_rate flags */
159 #define DEFAULT_RATE (1 << 0)
160 #define RATE_IN_242X (1 << 1)
161 #define RATE_IN_243X (1 << 2)
162 #define RATE_IN_343X (1 << 3) /* rates common to all 343X */
163 #define RATE_IN_3430ES2 (1 << 4) /* 3430ES2 rates only */
164 #define RATE_IN_4430 (1 << 5)
166 #define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)