2 * linux/arch/arm/mach-omap2/clock.h
4 * Copyright (C) 2005-2009 Texas Instruments, Inc.
5 * Copyright (C) 2004-2011 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 <linux/kernel.h>
21 #include <plat/clock.h>
23 /* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
24 #define CORE_CLK_SRC_32K 0x0
25 #define CORE_CLK_SRC_DPLL 0x1
26 #define CORE_CLK_SRC_DPLL_X2 0x2
28 /* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
29 #define OMAP2XXX_EN_DPLL_LPBYPASS 0x1
30 #define OMAP2XXX_EN_DPLL_FRBYPASS 0x2
31 #define OMAP2XXX_EN_DPLL_LOCKED 0x3
33 /* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
34 #define OMAP3XXX_EN_DPLL_LPBYPASS 0x5
35 #define OMAP3XXX_EN_DPLL_FRBYPASS 0x6
36 #define OMAP3XXX_EN_DPLL_LOCKED 0x7
38 /* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
39 #define OMAP4XXX_EN_DPLL_MNBYPASS 0x4
40 #define OMAP4XXX_EN_DPLL_LPBYPASS 0x5
41 #define OMAP4XXX_EN_DPLL_FRBYPASS 0x6
42 #define OMAP4XXX_EN_DPLL_LOCKED 0x7
44 /* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
45 #define DPLL_LOW_POWER_STOP 0x1
46 #define DPLL_LOW_POWER_BYPASS 0x5
47 #define DPLL_LOCKED 0x7
49 /* DPLL Type and DCO Selection Flags */
50 #define DPLL_J_TYPE 0x1
52 int omap2_clk_enable(struct clk *clk);
53 void omap2_clk_disable(struct clk *clk);
54 long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
55 int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
56 int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
57 long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
58 unsigned long omap3_dpll_recalc(struct clk *clk);
59 unsigned long omap3_clkoutx2_recalc(struct clk *clk);
60 void omap3_dpll_allow_idle(struct clk *clk);
61 void omap3_dpll_deny_idle(struct clk *clk);
62 u32 omap3_dpll_autoidle_read(struct clk *clk);
63 int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate);
64 int omap3_noncore_dpll_enable(struct clk *clk);
65 void omap3_noncore_dpll_disable(struct clk *clk);
66 int omap4_dpllmx_gatectrl_read(struct clk *clk);
67 void omap4_dpllmx_allow_gatectrl(struct clk *clk);
68 void omap4_dpllmx_deny_gatectrl(struct clk *clk);
70 #ifdef CONFIG_OMAP_RESET_CLOCKS
71 void omap2_clk_disable_unused(struct clk *clk);
73 #define omap2_clk_disable_unused NULL
76 void omap2_init_clk_clkdm(struct clk *clk);
77 void __init omap2_clk_disable_clkdm_control(void);
79 /* clkt_clksel.c public functions */
80 u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
82 void omap2_init_clksel_parent(struct clk *clk);
83 unsigned long omap2_clksel_recalc(struct clk *clk);
84 long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
85 int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
86 int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent);
88 /* clkt_iclk.c public functions */
89 extern void omap2_clkt_iclk_allow_idle(struct clk *clk);
90 extern void omap2_clkt_iclk_deny_idle(struct clk *clk);
92 u32 omap2_get_dpll_rate(struct clk *clk);
93 void omap2_init_dpll_parent(struct clk *clk);
95 int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);
98 #ifdef CONFIG_ARCH_OMAP2
99 void omap2xxx_clk_prepare_for_reboot(void);
101 static inline void omap2xxx_clk_prepare_for_reboot(void)
106 #ifdef CONFIG_ARCH_OMAP3
107 void omap3_clk_prepare_for_reboot(void);
109 static inline void omap3_clk_prepare_for_reboot(void)
114 #ifdef CONFIG_ARCH_OMAP4
115 void omap4_clk_prepare_for_reboot(void);
117 static inline void omap4_clk_prepare_for_reboot(void)
122 int omap2_dflt_clk_enable(struct clk *clk);
123 void omap2_dflt_clk_disable(struct clk *clk);
124 void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
126 void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
127 u8 *idlest_bit, u8 *idlest_val);
128 int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
129 void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
130 const char *core_ck_name,
131 const char *mpu_ck_name);
135 extern const struct clkops clkops_omap2_dflt_wait;
136 extern const struct clkops clkops_dummy;
137 extern const struct clkops clkops_omap2_dflt;
139 extern struct clk_functions omap2_clk_functions;
140 extern struct clk *vclk, *sclk;
142 extern const struct clksel_rate gpt_32k_rates[];
143 extern const struct clksel_rate gpt_sys_rates[];
144 extern const struct clksel_rate gfx_l3_rates[];
145 extern const struct clksel_rate dsp_ick_rates[];
147 #if defined(CONFIG_ARCH_OMAP2) && defined(CONFIG_CPU_FREQ)
148 extern void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
149 extern void omap2_clk_exit_cpufreq_table(struct cpufreq_frequency_table **table);
151 #define omap2_clk_init_cpufreq_table 0
152 #define omap2_clk_exit_cpufreq_table 0
155 extern const struct clkops clkops_omap2_iclk_dflt_wait;
156 extern const struct clkops clkops_omap2_iclk_dflt;
157 extern const struct clkops clkops_omap2_iclk_idle_only;
158 extern const struct clkops clkops_omap2_mdmclk_dflt_wait;
159 extern const struct clkops clkops_omap2xxx_dpll_ops;
160 extern const struct clkops clkops_omap3_noncore_dpll_ops;
161 extern const struct clkops clkops_omap3_core_dpll_ops;
162 extern const struct clkops clkops_omap4_dpllmx_ops;