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)
29 const struct clksel_rate *rates;
35 struct list_head node;
42 void __iomem *enable_reg;
47 void (*recalc)(struct clk *);
48 int (*set_rate)(struct clk *, unsigned long);
49 long (*round_rate)(struct clk *, unsigned long);
50 void (*init)(struct clk *);
51 int (*enable)(struct clk *);
52 void (*disable)(struct clk *);
53 #if defined(CONFIG_ARCH_OMAP2)
55 void __iomem *clksel_reg;
57 const struct clksel *clksel;
61 struct clk_functions {
62 int (*clk_enable)(struct clk *clk);
63 void (*clk_disable)(struct clk *clk);
64 long (*clk_round_rate)(struct clk *clk, unsigned long rate);
65 int (*clk_set_rate)(struct clk *clk, unsigned long rate);
66 int (*clk_set_parent)(struct clk *clk, struct clk *parent);
67 struct clk * (*clk_get_parent)(struct clk *clk);
68 void (*clk_allow_idle)(struct clk *clk);
69 void (*clk_deny_idle)(struct clk *clk);
70 void (*clk_disable_unused)(struct clk *clk);
73 extern unsigned int mpurate;
75 extern int clk_init(struct clk_functions * custom_clocks);
76 extern int clk_register(struct clk *clk);
77 extern void clk_unregister(struct clk *clk);
78 extern void propagate_rate(struct clk *clk);
79 extern void recalculate_root_clocks(void);
80 extern void followparent_recalc(struct clk * clk);
81 extern void clk_allow_idle(struct clk *clk);
82 extern void clk_deny_idle(struct clk *clk);
83 extern int clk_get_usecount(struct clk *clk);
86 #define RATE_CKCTL (1 << 0) /* Main fixed ratio clocks */
87 #define RATE_FIXED (1 << 1) /* Fixed clock rate */
88 #define RATE_PROPAGATES (1 << 2) /* Program children too */
89 #define VIRTUAL_CLOCK (1 << 3) /* Composite clock from table */
90 #define ALWAYS_ENABLED (1 << 4) /* Clock cannot be disabled */
91 #define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
92 #define VIRTUAL_IO_ADDRESS (1 << 6) /* Clock in virtual address */
93 #define CLOCK_IDLE_CONTROL (1 << 7)
94 #define CLOCK_NO_IDLE_PARENT (1 << 8)
95 #define DELAYED_APP (1 << 9) /* Delay application of clock */
96 #define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */
97 #define CM_MPU_SEL1 (1 << 11) /* Domain divider/source */
98 #define CM_DSP_SEL1 (1 << 12)
99 #define CM_GFX_SEL1 (1 << 13)
100 #define CM_MODEM_SEL1 (1 << 14)
101 #define CM_CORE_SEL1 (1 << 15) /* Sets divider for many */
102 #define CM_CORE_SEL2 (1 << 16) /* sets parent for GPT */
103 #define CM_WKUP_SEL1 (1 << 17)
104 #define CM_PLL_SEL1 (1 << 18)
105 #define CM_PLL_SEL2 (1 << 19)
106 #define CM_SYSCLKOUT_SEL1 (1 << 20)
107 #define CLOCK_IN_OMAP310 (1 << 21)
108 #define CLOCK_IN_OMAP730 (1 << 22)
109 #define CLOCK_IN_OMAP1510 (1 << 23)
110 #define CLOCK_IN_OMAP16XX (1 << 24)
111 #define CLOCK_IN_OMAP242X (1 << 25)
112 #define CLOCK_IN_OMAP243X (1 << 26)
113 #define CLOCK_IN_OMAP343X (1 << 27)
114 #define PARENT_CONTROLS_CLOCK (1 << 28)
116 /* Clksel_rate flags */
117 #define DEFAULT_RATE (1 << 0)
118 #define RATE_IN_242X (1 << 1)
119 #define RATE_IN_243X (1 << 2)
120 #define RATE_IN_343X (1 << 3)
121 #define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)
124 /* CM_CLKSEL2_PLL.CORE_CLK_SRC options (24XX) */
125 #define CORE_CLK_SRC_32K 0
126 #define CORE_CLK_SRC_DPLL 1
127 #define CORE_CLK_SRC_DPLL_X2 2