/*
* OMAP2+ Clock Management prototypes
*
* Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
* Copyright (C) 2007-2009 Nokia Corporation
*
* Written by 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_ASM_MACH_OMAP2_CM_H
#define __ARCH_ASM_MACH_OMAP2_CM_H
/*
* MAX_MODULE_READY_TIME: max duration in microseconds to wait for the
* PRCM to request that a module exit the inactive state in the case of
* OMAP2 & 3.
* In the case of OMAP4 this is the max duration in microseconds for the
* module to reach the functionnal state from an inactive state.
*/
#define MAX_MODULE_READY_TIME 2000
# ifndef __ASSEMBLER__
extern void __iomem *cm_base;
extern void __iomem *cm2_base;
extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2);
# endif
/*
* MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
* the PRCM to request that a module enter the inactive state in the
* case of OMAP2 & 3. In the case of OMAP4 this is the max duration
* in microseconds for the module to reach the inactive state from
* a functional state.
* XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during
* kernel init.
*/
#define MAX_MODULE_DISABLE_TIME 5000
# ifndef __ASSEMBLER__
/**
* struct cm_ll_data - fn ptrs to per-SoC CM function implementations
* @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
* @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
* @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl
* @module_enable: ptr to the SoC CM-specific module_enable impl
* @module_disable: ptr to the SoC CM-specific module_disable impl
*/
struct cm_ll_data {
int (*split_idlest_reg)(void __iomem *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id);
int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg,
u8 idlest_shift);
int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg,
u8 idlest_shift);
void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs);
};
extern int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id);
int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg,
u8 idlest_shift);
int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg,
u8 idlest_shift);
int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs);
extern int cm_register(struct cm_ll_data *cld);
extern int cm_unregister(struct cm_ll_data *cld);
int omap_cm_init(void);
int omap2_cm_base_init(void);
# endif
#endif
