2 * linux/arch/arm/mach-omap2/clock.h
4 * Copyright (C) 2005-2009 Texas Instruments, Inc.
5 * Copyright (C) 2004-2009 Nokia Corporation
8 * Richard Woodruff <r-woodruff2@ti.com>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
17 #define __ARCH_ARM_MACH_OMAP2_CLOCK_H
19 #include <plat/clock.h>
21 /* The maximum error between a target DPLL rate and the rounded rate in Hz */
22 #define DEFAULT_DPLL_RATE_TOLERANCE 50000
24 /* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
25 #define CORE_CLK_SRC_32K 0x0
26 #define CORE_CLK_SRC_DPLL 0x1
27 #define CORE_CLK_SRC_DPLL_X2 0x2
29 /* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
30 #define OMAP2XXX_EN_DPLL_LPBYPASS 0x1
31 #define OMAP2XXX_EN_DPLL_FRBYPASS 0x2
32 #define OMAP2XXX_EN_DPLL_LOCKED 0x3
34 /* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
35 #define OMAP3XXX_EN_DPLL_LPBYPASS 0x5
36 #define OMAP3XXX_EN_DPLL_FRBYPASS 0x6
37 #define OMAP3XXX_EN_DPLL_LOCKED 0x7
39 /* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
40 #define OMAP4XXX_EN_DPLL_MNBYPASS 0x4
41 #define OMAP4XXX_EN_DPLL_LPBYPASS 0x5
42 #define OMAP4XXX_EN_DPLL_FRBYPASS 0x6
43 #define OMAP4XXX_EN_DPLL_LOCKED 0x7
45 /* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
46 #define DPLL_LOW_POWER_STOP 0x1
47 #define DPLL_LOW_POWER_BYPASS 0x5
48 #define DPLL_LOCKED 0x7
50 int omap2_clk_enable(struct clk *clk);
51 void omap2_clk_disable(struct clk *clk);
52 long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
53 int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
54 int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
55 int omap2_dpll_set_rate_tolerance(struct clk *clk, unsigned int tolerance);
56 long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
57 unsigned long omap3_dpll_recalc(struct clk *clk);
58 unsigned long omap3_clkoutx2_recalc(struct clk *clk);
59 void omap3_dpll_allow_idle(struct clk *clk);
60 void omap3_dpll_deny_idle(struct clk *clk);
61 u32 omap3_dpll_autoidle_read(struct clk *clk);
62 int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate);
63 int omap3_noncore_dpll_enable(struct clk *clk);
64 void omap3_noncore_dpll_disable(struct clk *clk);
66 #ifdef CONFIG_OMAP_RESET_CLOCKS
67 void omap2_clk_disable_unused(struct clk *clk);
69 #define omap2_clk_disable_unused NULL
72 unsigned long omap2_clksel_recalc(struct clk *clk);
73 void omap2_init_clk_clkdm(struct clk *clk);
74 void omap2_init_clksel_parent(struct clk *clk);
75 u32 omap2_clksel_get_divisor(struct clk *clk);
76 u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
78 u32 omap2_clksel_to_divisor(struct clk *clk, u32 field_val);
79 u32 omap2_divisor_to_clksel(struct clk *clk, u32 div);
80 long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
81 int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
82 int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent);
83 u32 omap2_get_dpll_rate(struct clk *clk);
84 void omap2_init_dpll_parent(struct clk *clk);
85 int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);
86 int omap2_dflt_clk_enable(struct clk *clk);
87 void omap2_dflt_clk_disable(struct clk *clk);
88 void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
90 void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
92 void omap2xxx_clk_commit(struct clk *clk);
96 extern const struct clkops clkops_omap2_dflt_wait;
97 extern const struct clkops clkops_omap2_dflt;
99 extern struct clk_functions omap2_clk_functions;
100 extern struct clk *vclk, *sclk;
102 extern const struct clksel_rate gpt_32k_rates[];
103 extern const struct clksel_rate gpt_sys_rates[];
104 extern const struct clksel_rate gfx_l3_rates[];
106 #if defined(CONFIG_ARCH_OMAP24XX) && defined(CONFIG_CPU_FREQ)
107 extern void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
108 extern void omap2_clk_exit_cpufreq_table(struct cpufreq_frequency_table **table);
110 #define omap2_clk_init_cpufreq_table 0
111 #define omap2_clk_exit_cpufreq_table 0