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 unsigned int rate_tolerance;
43 unsigned long last_rounded_rate;
50 # if defined(CONFIG_ARCH_OMAP3)
52 void __iomem *control_reg;
53 void __iomem *autoidle_reg;
54 void __iomem *idlest_reg;
68 struct list_head node;
69 const struct clkops *ops;
75 void __iomem *enable_reg;
76 void (*recalc)(struct clk *);
77 int (*set_rate)(struct clk *, unsigned long);
78 long (*round_rate)(struct clk *, unsigned long);
79 void (*init)(struct clk *);
82 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
84 void __iomem *clksel_reg;
86 const struct clksel *clksel;
87 struct dpll_data *dpll_data;
88 const char *clkdm_name;
89 struct clockdomain *clkdm;
94 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
95 struct dentry *dent; /* For visible tree hierarchy */
99 struct cpufreq_frequency_table;
101 struct clk_functions {
102 int (*clk_enable)(struct clk *clk);
103 void (*clk_disable)(struct clk *clk);
104 long (*clk_round_rate)(struct clk *clk, unsigned long rate);
105 int (*clk_set_rate)(struct clk *clk, unsigned long rate);
106 int (*clk_set_parent)(struct clk *clk, struct clk *parent);
107 void (*clk_allow_idle)(struct clk *clk);
108 void (*clk_deny_idle)(struct clk *clk);
109 void (*clk_disable_unused)(struct clk *clk);
110 #ifdef CONFIG_CPU_FREQ
111 void (*clk_init_cpufreq_table)(struct cpufreq_frequency_table **);
115 extern unsigned int mpurate;
117 extern int clk_init(struct clk_functions *custom_clocks);
118 extern int clk_register(struct clk *clk);
119 extern void clk_unregister(struct clk *clk);
120 extern void propagate_rate(struct clk *clk);
121 extern void recalculate_root_clocks(void);
122 extern void followparent_recalc(struct clk *clk);
123 extern int clk_get_usecount(struct clk *clk);
124 extern void clk_enable_init_clocks(void);
125 #ifdef CONFIG_CPU_FREQ
126 extern void clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
129 extern const struct clkops clkops_null;
133 #define RATE_FIXED (1 << 1) /* Fixed clock rate */
134 #define RATE_PROPAGATES (1 << 2) /* Program children too */
135 /* bits 3-4 are free */
136 #define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
137 #define VIRTUAL_IO_ADDRESS (1 << 6) /* Clock in virtual address */
138 #define CLOCK_IDLE_CONTROL (1 << 7)
139 #define CLOCK_NO_IDLE_PARENT (1 << 8)
140 #define DELAYED_APP (1 << 9) /* Delay application of clock */
141 #define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */
142 #define ENABLE_ON_INIT (1 << 11) /* Enable upon framework init */
143 #define INVERT_ENABLE (1 << 12) /* 0 enables, 1 disables */
144 /* bits 13-31 are currently free */
146 /* Clksel_rate flags */
147 #define DEFAULT_RATE (1 << 0)
148 #define RATE_IN_242X (1 << 1)
149 #define RATE_IN_243X (1 << 2)
150 #define RATE_IN_343X (1 << 3) /* rates common to all 343X */
151 #define RATE_IN_3430ES2 (1 << 4) /* 3430ES2 rates only */
153 #define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)
156 /* CM_CLKSEL2_PLL.CORE_CLK_SRC options (24XX) */
157 #define CORE_CLK_SRC_32K 0
158 #define CORE_CLK_SRC_DPLL 1
159 #define CORE_CLK_SRC_DPLL_X2 2