[linux-2.6-block.git] / arch / arm / mach-omap2 / clock.h

/*
 *  linux/arch/arm/mach-omap2/clock.h
 *
 *  Copyright (C) 2005-2009 Texas Instruments, Inc.
 *  Copyright (C) 2004-2009 Nokia Corporation
 *
 *  Contacts:
 *  Richard Woodruff <r-woodruff2@ti.com>
 *  Paul Walmsley
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
#define __ARCH_ARM_MACH_OMAP2_CLOCK_H

#include <plat/clock.h>

/* The maximum error between a target DPLL rate and the rounded rate in Hz */
#define DEFAULT_DPLL_RATE_TOLERANCE	50000

/* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
#define CORE_CLK_SRC_32K		0x0
#define CORE_CLK_SRC_DPLL		0x1
#define CORE_CLK_SRC_DPLL_X2		0x2

/* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
#define OMAP2XXX_EN_DPLL_LPBYPASS		0x1
#define OMAP2XXX_EN_DPLL_FRBYPASS		0x2
#define OMAP2XXX_EN_DPLL_LOCKED			0x3

/* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
#define OMAP3XXX_EN_DPLL_LPBYPASS		0x5
#define OMAP3XXX_EN_DPLL_FRBYPASS		0x6
#define OMAP3XXX_EN_DPLL_LOCKED			0x7

/* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
#define OMAP4XXX_EN_DPLL_MNBYPASS		0x4
#define OMAP4XXX_EN_DPLL_LPBYPASS		0x5
#define OMAP4XXX_EN_DPLL_FRBYPASS		0x6
#define OMAP4XXX_EN_DPLL_LOCKED			0x7

/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
#define DPLL_LOW_POWER_STOP	0x1
#define DPLL_LOW_POWER_BYPASS	0x5
#define DPLL_LOCKED		0x7

/* DPLL Type and DCO Selection Flags */
#define DPLL_J_TYPE		0x1

int omap2_clk_enable(struct clk *clk);
void omap2_clk_disable(struct clk *clk);
long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
int omap2_dpll_set_rate_tolerance(struct clk *clk, unsigned int tolerance);
long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
unsigned long omap3_dpll_recalc(struct clk *clk);
unsigned long omap3_clkoutx2_recalc(struct clk *clk);
void omap3_dpll_allow_idle(struct clk *clk);
void omap3_dpll_deny_idle(struct clk *clk);
u32 omap3_dpll_autoidle_read(struct clk *clk);
int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate);
int omap3_noncore_dpll_enable(struct clk *clk);
void omap3_noncore_dpll_disable(struct clk *clk);

#ifdef CONFIG_OMAP_RESET_CLOCKS
void omap2_clk_disable_unused(struct clk *clk);
#else
#define omap2_clk_disable_unused	NULL
#endif

void omap2_init_clk_clkdm(struct clk *clk);

/* clkt_clksel.c public functions */
u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
				u32 *new_div);
void omap2_init_clksel_parent(struct clk *clk);
unsigned long omap2_clksel_recalc(struct clk *clk);
long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent);

u32 omap2_get_dpll_rate(struct clk *clk);
void omap2_init_dpll_parent(struct clk *clk);

int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);


#ifdef CONFIG_ARCH_OMAP2
void omap2xxx_clk_prepare_for_reboot(void);
#else
static inline void omap2xxx_clk_prepare_for_reboot(void)
{
}
#endif

#ifdef CONFIG_ARCH_OMAP3
void omap3_clk_prepare_for_reboot(void);
#else
static inline void omap3_clk_prepare_for_reboot(void)
{
}
#endif

#ifdef CONFIG_ARCH_OMAP4
void omap4_clk_prepare_for_reboot(void);
#else
static inline void omap4_clk_prepare_for_reboot(void)
{
}
#endif

int omap2_dflt_clk_enable(struct clk *clk);
void omap2_dflt_clk_disable(struct clk *clk);
void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
				   u8 *other_bit);
void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
				u8 *idlest_bit, u8 *idlest_val);
int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
			       const char *core_ck_name,
			       const char *mpu_ck_name);

extern u8 cpu_mask;

extern const struct clkops clkops_omap2_dflt_wait;
extern const struct clkops clkops_dummy;
extern const struct clkops clkops_omap2_dflt;

extern struct clk_functions omap2_clk_functions;
extern struct clk *vclk, *sclk;

extern const struct clksel_rate gpt_32k_rates[];
extern const struct clksel_rate gpt_sys_rates[];
extern const struct clksel_rate gfx_l3_rates[];

#if defined(CONFIG_ARCH_OMAP2) && defined(CONFIG_CPU_FREQ)
extern void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
extern void omap2_clk_exit_cpufreq_table(struct cpufreq_frequency_table **table);
#else
#define omap2_clk_init_cpufreq_table	0
#define omap2_clk_exit_cpufreq_table	0
#endif

extern const struct clkops clkops_omap3_noncore_dpll_ops;

#endif
Commit	Line	Data
543d9378 PW	1	/*
	2	* linux/arch/arm/mach-omap2/clock.h
	3	*
d8a94458 PW	4	* Copyright (C) 2005-2009 Texas Instruments, Inc.
d8a94458 PW	5	* Copyright (C) 2004-2009 Nokia Corporation
543d9378	6	*
a16e9703 TL	7	* Contacts:
a16e9703 TL	8	* Richard Woodruff <r-woodruff2@ti.com>
543d9378 PW	9	* 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
ce491cf8	19	#include <plat/clock.h>
543d9378	20
88b8ba90 PW	21	/* The maximum error between a target DPLL rate and the rounded rate in Hz */
	22	#define DEFAULT_DPLL_RATE_TOLERANCE 50000
	23
c0bf3132 RK	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
	28
	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
	33
	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
	38
16975a79 RN	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
	44
a1391d27 RN	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
	49
358965d7 RW	50	/* DPLL Type and DCO Selection Flags */
358965d7 RW	51	#define DPLL_J_TYPE 0x1
358965d7	52
543d9378 PW	53	int omap2_clk_enable(struct clk *clk);
	54	void omap2_clk_disable(struct clk *clk);
	55	long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
	56	int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
	57	int omap2_clk_set_parent(struct clk clk, struct clk new_parent);
fecb494b	58	int omap2_dpll_set_rate_tolerance(struct clk *clk, unsigned int tolerance);
88b8ba90	59	long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
a1391d27 RN	60	unsigned long omap3_dpll_recalc(struct clk *clk);
	61	unsigned long omap3_clkoutx2_recalc(struct clk *clk);
	62	void omap3_dpll_allow_idle(struct clk *clk);
	63	void omap3_dpll_deny_idle(struct clk *clk);
	64	u32 omap3_dpll_autoidle_read(struct clk *clk);
	65	int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate);
	66	int omap3_noncore_dpll_enable(struct clk *clk);
	67	void omap3_noncore_dpll_disable(struct clk *clk);
543d9378 PW	68
	69	#ifdef CONFIG_OMAP_RESET_CLOCKS
	70	void omap2_clk_disable_unused(struct clk *clk);
	71	#else
	72	#define omap2_clk_disable_unused NULL
	73	#endif
	74
333943ba	75	void omap2_init_clk_clkdm(struct clk *clk);
435699db PW	76
435699db PW	77	/* clkt_clksel.c public functions */
543d9378 PW	78	u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
543d9378 PW	79	u32 *new_div);
435699db PW	80	void omap2_init_clksel_parent(struct clk *clk);
435699db PW	81	unsigned long omap2_clksel_recalc(struct clk *clk);
543d9378 PW	82	long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
543d9378 PW	83	int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
df791b3e	84	int omap2_clksel_set_parent(struct clk clk, struct clk new_parent);
435699db	85
543d9378	86	u32 omap2_get_dpll_rate(struct clk *clk);
911bd739	87	void omap2_init_dpll_parent(struct clk *clk);
435699db	88
543d9378	89	int omap2_wait_clock_ready(void __iomem reg, u32 cval, const char name);
56213ca4 TL	90
	91
	92	#ifdef CONFIG_ARCH_OMAP2
	93	void omap2xxx_clk_prepare_for_reboot(void);
	94	#else
	95	static inline void omap2xxx_clk_prepare_for_reboot(void)
	96	{
	97	}
	98	#endif
	99
	100	#ifdef CONFIG_ARCH_OMAP3
	101	void omap3_clk_prepare_for_reboot(void);
	102	#else
	103	static inline void omap3_clk_prepare_for_reboot(void)
	104	{
	105	}
	106	#endif
	107
	108	#ifdef CONFIG_ARCH_OMAP4
	109	void omap4_clk_prepare_for_reboot(void);
	110	#else
	111	static inline void omap4_clk_prepare_for_reboot(void)
	112	{
	113	}
	114	#endif
	115
72350b29 PW	116	int omap2_dflt_clk_enable(struct clk *clk);
	117	void omap2_dflt_clk_disable(struct clk *clk);
	118	void omap2_clk_dflt_find_companion(struct clk clk, void __iomem *other_reg,
	119	u8 *other_bit);
	120	void omap2_clk_dflt_find_idlest(struct clk clk, void __iomem *idlest_reg,
419cc97d	121	u8 idlest_bit, u8 idlest_val);
4d30e82c PW	122	int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
	123	void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
	124	const char *core_ck_name,
	125	const char *mpu_ck_name);
543d9378	126
d8a94458 PW	127	extern u8 cpu_mask;
d8a94458 PW	128
b36ee724	129	extern const struct clkops clkops_omap2_dflt_wait;
7c43d547	130	extern const struct clkops clkops_dummy;
bc51da4e	131	extern const struct clkops clkops_omap2_dflt;
b36ee724	132
82e9bd58	133	extern struct clk_functions omap2_clk_functions;
d8a94458	134	extern struct clk vclk, sclk;
82e9bd58	135
d8a94458 PW	136	extern const struct clksel_rate gpt_32k_rates[];
	137	extern const struct clksel_rate gpt_sys_rates[];
	138	extern const struct clksel_rate gfx_l3_rates[];
543d9378	139
088ef950	140	#if defined(CONFIG_ARCH_OMAP2) && defined(CONFIG_CPU_FREQ)
69ecefca PW	141	extern void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
	142	extern void omap2_clk_exit_cpufreq_table(struct cpufreq_frequency_table **table);
	143	#else
	144	#define omap2_clk_init_cpufreq_table 0
	145	#define omap2_clk_exit_cpufreq_table 0
	146	#endif
543d9378	147
657ebfad PW	148	extern const struct clkops clkops_omap3_noncore_dpll_ops;
657ebfad PW	149
543d9378	150	#endif