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Diffstat (limited to 'arch/arm/mach-omap2/clock.h')
| -rw-r--r-- | arch/arm/mach-omap2/clock.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h new file mode 100644 index 00000000..a1bb23a2 --- /dev/null +++ b/arch/arm/mach-omap2/clock.h @@ -0,0 +1,158 @@ +/* + * linux/arch/arm/mach-omap2/clock.h + * + * Copyright (C) 2005-2009 Texas Instruments, Inc. + * Copyright (C) 2004-2011 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 <linux/kernel.h> + +#include <plat/clock.h> + +/* 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); +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); +int omap4_dpllmx_gatectrl_read(struct clk *clk); +void omap4_dpllmx_allow_gatectrl(struct clk *clk); +void omap4_dpllmx_deny_gatectrl(struct clk *clk); +long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate); +unsigned long omap4_dpll_regm4xen_recalc(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); +void __init omap2_clk_disable_clkdm_control(void); + +/* 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); + +/* clkt_iclk.c public functions */ +extern void omap2_clkt_iclk_allow_idle(struct clk *clk); +extern void omap2_clkt_iclk_deny_idle(struct clk *clk); + +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 u16 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[]; +extern const struct clksel_rate dsp_ick_rates[]; + +extern const struct clkops clkops_omap2_iclk_dflt_wait; +extern const struct clkops clkops_omap2_iclk_dflt; +extern const struct clkops clkops_omap2_iclk_idle_only; +extern const struct clkops clkops_omap2_mdmclk_dflt_wait; +extern const struct clkops clkops_omap2xxx_dpll_ops; +extern const struct clkops clkops_omap3_noncore_dpll_ops; +extern const struct clkops clkops_omap3_core_dpll_ops; +extern const struct clkops clkops_omap4_dpllmx_ops; + +#endif |