112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/*
|
|
* arch/arm/plat-omap/include/mach/clockdomain.h
|
|
*
|
|
* OMAP2/3 clockdomain framework functions
|
|
*
|
|
* Copyright (C) 2008 Texas Instruments, Inc.
|
|
* Copyright (C) 2008 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 __ASM_ARM_ARCH_OMAP_CLOCKDOMAIN_H
|
|
#define __ASM_ARM_ARCH_OMAP_CLOCKDOMAIN_H
|
|
|
|
#include <plat/powerdomain.h>
|
|
#include <plat/clock.h>
|
|
#include <plat/cpu.h>
|
|
|
|
/* Clockdomain capability flags */
|
|
#define CLKDM_CAN_FORCE_SLEEP (1 << 0)
|
|
#define CLKDM_CAN_FORCE_WAKEUP (1 << 1)
|
|
#define CLKDM_CAN_ENABLE_AUTO (1 << 2)
|
|
#define CLKDM_CAN_DISABLE_AUTO (1 << 3)
|
|
|
|
#define CLKDM_CAN_HWSUP (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_DISABLE_AUTO)
|
|
#define CLKDM_CAN_SWSUP (CLKDM_CAN_FORCE_SLEEP | CLKDM_CAN_FORCE_WAKEUP)
|
|
#define CLKDM_CAN_HWSUP_SWSUP (CLKDM_CAN_SWSUP | CLKDM_CAN_HWSUP)
|
|
|
|
/* OMAP24XX CM_CLKSTCTRL_*.AUTOSTATE_* register bit values */
|
|
#define OMAP24XX_CLKSTCTRL_DISABLE_AUTO 0x0
|
|
#define OMAP24XX_CLKSTCTRL_ENABLE_AUTO 0x1
|
|
|
|
/* OMAP3XXX CM_CLKSTCTRL_*.CLKTRCTRL_* register bit values */
|
|
#define OMAP34XX_CLKSTCTRL_DISABLE_AUTO 0x0
|
|
#define OMAP34XX_CLKSTCTRL_FORCE_SLEEP 0x1
|
|
#define OMAP34XX_CLKSTCTRL_FORCE_WAKEUP 0x2
|
|
#define OMAP34XX_CLKSTCTRL_ENABLE_AUTO 0x3
|
|
|
|
/*
|
|
* struct clkdm_pwrdm_autodep - a powerdomain that should have wkdeps
|
|
* and sleepdeps added when a powerdomain should stay active in hwsup mode;
|
|
* and conversely, removed when the powerdomain should be allowed to go
|
|
* inactive in hwsup mode.
|
|
*/
|
|
struct clkdm_pwrdm_autodep {
|
|
|
|
union {
|
|
/* Name of the powerdomain to add a wkdep/sleepdep on */
|
|
const char *name;
|
|
|
|
/* Powerdomain pointer (looked up at clkdm_init() time) */
|
|
struct powerdomain *ptr;
|
|
} pwrdm;
|
|
|
|
/* OMAP chip types that this clockdomain dep is valid on */
|
|
const struct omap_chip_id omap_chip;
|
|
|
|
};
|
|
|
|
struct clockdomain {
|
|
|
|
/* Clockdomain name */
|
|
const char *name;
|
|
|
|
union {
|
|
/* Powerdomain enclosing this clockdomain */
|
|
const char *name;
|
|
|
|
/* Powerdomain pointer assigned at clkdm_register() */
|
|
struct powerdomain *ptr;
|
|
} pwrdm;
|
|
|
|
/* CLKTRCTRL/AUTOSTATE field mask in CM_CLKSTCTRL reg */
|
|
const u16 clktrctrl_mask;
|
|
|
|
/* Clockdomain capability flags */
|
|
const u8 flags;
|
|
|
|
/* OMAP chip types that this clockdomain is valid on */
|
|
const struct omap_chip_id omap_chip;
|
|
|
|
/* Usecount tracking */
|
|
atomic_t usecount;
|
|
|
|
struct list_head node;
|
|
|
|
};
|
|
|
|
void clkdm_init(struct clockdomain **clkdms, struct clkdm_pwrdm_autodep *autodeps);
|
|
int clkdm_register(struct clockdomain *clkdm);
|
|
int clkdm_unregister(struct clockdomain *clkdm);
|
|
struct clockdomain *clkdm_lookup(const char *name);
|
|
|
|
int clkdm_for_each(int (*fn)(struct clockdomain *clkdm, void *user),
|
|
void *user);
|
|
struct powerdomain *clkdm_get_pwrdm(struct clockdomain *clkdm);
|
|
|
|
void omap2_clkdm_allow_idle(struct clockdomain *clkdm);
|
|
void omap2_clkdm_deny_idle(struct clockdomain *clkdm);
|
|
|
|
int omap2_clkdm_wakeup(struct clockdomain *clkdm);
|
|
int omap2_clkdm_sleep(struct clockdomain *clkdm);
|
|
|
|
int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk);
|
|
int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk);
|
|
|
|
#endif
|