| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788 | /* * OMAP2/3 clockdomain framework functions * * Copyright (C) 2008, 2012 Texas Instruments, Inc. * Copyright (C) 2008-2011 Nokia Corporation * * 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_CLOCKDOMAIN_H#define __ARCH_ARM_MACH_OMAP2_CLOCKDOMAIN_H#include <linux/init.h>#include <linux/spinlock.h>#include "powerdomain.h"#include "clock.h"#include "omap_hwmod.h"/* * Clockdomain flags * * XXX Document CLKDM_CAN_* flags * * CLKDM_NO_AUTODEPS: Prevent "autodeps" from being added/removed from this *     clockdomain.  (Currently, this applies to OMAP3 clockdomains only.) * CLKDM_ACTIVE_WITH_MPU: The PRCM guarantees that this clockdomain is *     active whenever the MPU is active.  True for interconnects and *     the WKUP clockdomains. * CLKDM_MISSING_IDLE_REPORTING: The idle status of the IP blocks and *     clocks inside this clockdomain are not taken into account by *     the PRCM when determining whether the clockdomain is idle. *     Without this flag, if the clockdomain is set to *     hardware-supervised idle mode, the PRCM may transition the *     enclosing powerdomain to a low power state, even when devices *     inside the clockdomain and powerdomain are in use.  (An example *     of such a clockdomain is the EMU clockdomain on OMAP3/4.)  If *     this flag is set, and the clockdomain does not support the *     force-sleep mode, then the HW_AUTO mode will be used to put the *     clockdomain to sleep.  Similarly, if the clockdomain supports *     the force-wakeup mode, then it will be used whenever a clock or *     IP block inside the clockdomain is active, rather than the *     HW_AUTO mode. */#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_NO_AUTODEPS			(1 << 4)#define CLKDM_ACTIVE_WITH_MPU			(1 << 5)#define CLKDM_MISSING_IDLE_REPORTING		(1 << 6)#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)/** * struct clkdm_autodep - clkdm deps to add when entering/exiting hwsup mode * @clkdm: clockdomain to add wkdep+sleepdep on - set name member only * * A clockdomain that should have wkdeps and sleepdeps added when a * clockdomain should stay active in hwsup mode; and conversely, * removed when the clockdomain should be allowed to go inactive in * hwsup mode. * * Autodeps are deprecated and should be removed after * omap_hwmod-based fine-grained module idle control is added. */struct clkdm_autodep {	union {		const char *name;		struct clockdomain *ptr;	} clkdm;};/** * struct clkdm_dep - encode dependencies between clockdomains * @clkdm_name: clockdomain name * @clkdm: pointer to the struct clockdomain of @clkdm_name * @wkdep_usecount: Number of wakeup dependencies causing this clkdm to wake * @sleepdep_usecount: Number of sleep deps that could prevent clkdm from idle * * Statically defined.  @clkdm is resolved from @clkdm_name at runtime and * should not be pre-initialized.
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