blob: a1bb23a23351262600d242873d71536c9e4de134 [file] [log] [blame]
Paul Walmsley543d9372008-03-18 10:22:06 +02001/*
2 * linux/arch/arm/mach-omap2/clock.h
3 *
Paul Walmsleyd8a94452009-12-08 16:21:29 -07004 * Copyright (C) 2005-2009 Texas Instruments, Inc.
Paul Walmsley530e5442011-02-25 15:39:28 -07005 * Copyright (C) 2004-2011 Nokia Corporation
Tony Lindgrena16e9702008-03-18 11:56:39 +02006 *
7 * Contacts:
Paul Walmsley543d9372008-03-18 10:22:06 +02008 * Richard Woodruff <r-woodruff2@ti.com>
Paul Walmsley543d9372008-03-18 10:22:06 +02009 * Paul Walmsley
10 *
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.
14 */
15
16#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
17#define __ARCH_ARM_MACH_OMAP2_CLOCK_H
18
Paul Walmsley12706c52011-07-10 05:57:06 -060019#include <linux/kernel.h>
20
Tony Lindgrence491cf2009-10-20 09:40:47 -070021#include <plat/clock.h>
Paul Walmsley543d9372008-03-18 10:22:06 +020022
Russell Kingc0bf3132009-02-19 13:29:22 +000023/* 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
27
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
32
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
37
Rajendra Nayak16975a72009-12-08 18:47:16 -070038/* 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
43
Rajendra Nayaka1391d22009-12-08 18:47:16 -070044/* 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
48
Richard Woodruff358965d2010-02-22 22:09:08 -070049/* DPLL Type and DCO Selection Flags */
50#define DPLL_J_TYPE 0x1
Richard Woodruff358965d2010-02-22 22:09:08 -070051
Paul Walmsley543d9372008-03-18 10:22:06 +020052int omap2_clk_enable(struct clk *clk);
53void omap2_clk_disable(struct clk *clk);
54long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
55int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
56int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
Paul Walmsley88b8ba92008-07-03 12:24:46 +030057long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
Rajendra Nayaka1391d22009-12-08 18:47:16 -070058unsigned long omap3_dpll_recalc(struct clk *clk);
59unsigned long omap3_clkoutx2_recalc(struct clk *clk);
60void omap3_dpll_allow_idle(struct clk *clk);
61void omap3_dpll_deny_idle(struct clk *clk);
62u32 omap3_dpll_autoidle_read(struct clk *clk);
63int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate);
64int omap3_noncore_dpll_enable(struct clk *clk);
65void omap3_noncore_dpll_disable(struct clk *clk);
Rajendra Nayak97f67892011-02-25 15:49:01 -070066int omap4_dpllmx_gatectrl_read(struct clk *clk);
67void omap4_dpllmx_allow_gatectrl(struct clk *clk);
68void omap4_dpllmx_deny_gatectrl(struct clk *clk);
Mike Turquettea1900f22011-10-07 00:52:58 -060069long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate);
70unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk);
Paul Walmsley543d9372008-03-18 10:22:06 +020071
72#ifdef CONFIG_OMAP_RESET_CLOCKS
73void omap2_clk_disable_unused(struct clk *clk);
74#else
75#define omap2_clk_disable_unused NULL
76#endif
77
Paul Walmsley333943b2008-08-19 11:08:45 +030078void omap2_init_clk_clkdm(struct clk *clk);
Paul Walmsley12706c52011-07-10 05:57:06 -060079void __init omap2_clk_disable_clkdm_control(void);
Paul Walmsley435699d2010-05-18 18:40:24 -060080
81/* clkt_clksel.c public functions */
Paul Walmsley543d9372008-03-18 10:22:06 +020082u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
83 u32 *new_div);
Paul Walmsley435699d2010-05-18 18:40:24 -060084void omap2_init_clksel_parent(struct clk *clk);
85unsigned long omap2_clksel_recalc(struct clk *clk);
Paul Walmsley543d9372008-03-18 10:22:06 +020086long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
87int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
Paul Walmsleydf791b32010-01-26 20:13:04 -070088int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent);
Paul Walmsley435699d2010-05-18 18:40:24 -060089
Paul Walmsley530e5442011-02-25 15:39:28 -070090/* clkt_iclk.c public functions */
91extern void omap2_clkt_iclk_allow_idle(struct clk *clk);
92extern void omap2_clkt_iclk_deny_idle(struct clk *clk);
93
Paul Walmsley543d9372008-03-18 10:22:06 +020094u32 omap2_get_dpll_rate(struct clk *clk);
Rajendra Nayak911bd732009-12-08 18:47:17 -070095void omap2_init_dpll_parent(struct clk *clk);
Paul Walmsley435699d2010-05-18 18:40:24 -060096
Paul Walmsley543d9372008-03-18 10:22:06 +020097int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);
Tony Lindgren56213ca2010-02-12 12:26:46 -080098
99
100#ifdef CONFIG_ARCH_OMAP2
101void omap2xxx_clk_prepare_for_reboot(void);
102#else
103static inline void omap2xxx_clk_prepare_for_reboot(void)
104{
105}
106#endif
107
108#ifdef CONFIG_ARCH_OMAP3
109void omap3_clk_prepare_for_reboot(void);
110#else
111static inline void omap3_clk_prepare_for_reboot(void)
112{
113}
114#endif
115
116#ifdef CONFIG_ARCH_OMAP4
117void omap4_clk_prepare_for_reboot(void);
118#else
119static inline void omap4_clk_prepare_for_reboot(void)
120{
121}
122#endif
123
Paul Walmsley72350b22009-07-24 19:44:03 -0600124int omap2_dflt_clk_enable(struct clk *clk);
125void omap2_dflt_clk_disable(struct clk *clk);
126void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
127 u8 *other_bit);
128void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
Ranjith Lohithakshan419cc972010-02-24 12:05:54 -0700129 u8 *idlest_bit, u8 *idlest_val);
Paul Walmsley4d30e822010-02-22 22:09:36 -0700130int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
131void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
132 const char *core_ck_name,
133 const char *mpu_ck_name);
Paul Walmsley543d9372008-03-18 10:22:06 +0200134
Afzal Mohammed99541192011-12-13 10:46:43 -0800135extern u16 cpu_mask;
Paul Walmsleyd8a94452009-12-08 16:21:29 -0700136
Russell Kingb36ee722008-11-04 17:59:52 +0000137extern const struct clkops clkops_omap2_dflt_wait;
Santosh Shilimkar7c43d542010-02-22 22:09:40 -0700138extern const struct clkops clkops_dummy;
Russell Kingbc51da42008-11-04 18:59:32 +0000139extern const struct clkops clkops_omap2_dflt;
Russell Kingb36ee722008-11-04 17:59:52 +0000140
Paul Walmsley82e9bd52009-12-08 16:18:47 -0700141extern struct clk_functions omap2_clk_functions;
Paul Walmsleyd8a94452009-12-08 16:21:29 -0700142extern struct clk *vclk, *sclk;
Paul Walmsley82e9bd52009-12-08 16:18:47 -0700143
Paul Walmsleyd8a94452009-12-08 16:21:29 -0700144extern const struct clksel_rate gpt_32k_rates[];
145extern const struct clksel_rate gpt_sys_rates[];
146extern const struct clksel_rate gfx_l3_rates[];
Paul Walmsley22411392011-02-25 15:52:04 -0700147extern const struct clksel_rate dsp_ick_rates[];
Paul Walmsley543d9372008-03-18 10:22:06 +0200148
Paul Walmsley530e5442011-02-25 15:39:28 -0700149extern const struct clkops clkops_omap2_iclk_dflt_wait;
150extern const struct clkops clkops_omap2_iclk_dflt;
151extern const struct clkops clkops_omap2_iclk_idle_only;
Paul Walmsleye892b252011-02-25 15:39:29 -0700152extern const struct clkops clkops_omap2_mdmclk_dflt_wait;
Paul Walmsley0fd0c212011-02-25 15:49:53 -0700153extern const struct clkops clkops_omap2xxx_dpll_ops;
Paul Walmsley657ebfa2010-02-22 22:09:20 -0700154extern const struct clkops clkops_omap3_noncore_dpll_ops;
Rajendra Nayak6c6f5a72011-02-25 15:49:00 -0700155extern const struct clkops clkops_omap3_core_dpll_ops;
Rajendra Nayak70db8a62011-02-25 15:49:02 -0700156extern const struct clkops clkops_omap4_dpllmx_ops;
Paul Walmsley657ebfa2010-02-22 22:09:20 -0700157
Paul Walmsley543d9372008-03-18 10:22:06 +0200158#endif