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- /*
- * 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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