los_pm.c 文件参考

浏览源代码.

结构体
struct	OsPmLockCB
struct	LosPmCB

类型定义
typedef UINT32(*	Suspend) (UINT32 mode)
	电源锁控制块 更多...

函数
STATIC	SPIN_LOCK_INIT (g_pmSpin)
	电源模块自旋锁 更多...
STATIC VOID	OsPmSysctrlInit (VOID)
STATIC VOID	OsPmTickTimerStart (LosPmCB *pm)
STATIC BOOL	OsPmTickTimerStop (LosPmCB *pm)
STATIC VOID	OsPmCpuResume (LosPmCB *pm)
VOID	OsPmCpuSuspend (LosPmCB *pm)
STATIC VOID	OsPmResumePrepare (LosPmCB *pm, UINT32 mode, UINT32 prepare)
STATIC UINT32	OsPmSuspendPrepare (Suspend sysSuspendEarly, Suspend deviceSuspend, UINT32 mode, UINT32 *prepare)
STATIC UINT32	OsPmSuspendCheck (LosPmCB *pm, Suspend *sysSuspendEarly, Suspend *deviceSuspend, LOS_SysSleepEnum *mode)
STATIC UINT32	OsPmSuspendSleep (LosPmCB *pm)
STATIC UINT32	OsPmDeviceRegister (LosPmCB *pm, LosPmDevice *device)
STATIC UINT32	OsPmSysctrlRegister (LosPmCB *pm, LosPmSysctrl *sysctrl)
UINT32	LOS_PmRegister (LOS_PmNodeType type, VOID *node)
	Register a power management node. 更多...
STATIC UINT32	OsPmDeviceUnregister (LosPmCB *pm, LosPmDevice *device)
STATIC UINT32	OsPmSysctrlUnregister (LosPmCB *pm, LosPmSysctrl *sysctrl)
UINT32	LOS_PmUnregister (LOS_PmNodeType type, VOID *node)
	Unregister a power management node. 更多...
VOID	LOS_PmWakeSet (VOID)
	Set the system wake up flag. 更多...
LOS_SysSleepEnum	LOS_PmModeGet (VOID)
	获取电源模式 更多...
UINT32	LOS_PmModeSet (LOS_SysSleepEnum mode)
	Set low power mode. 更多...
UINT32	LOS_PmLockCountGet (VOID)
	获取电源锁数量 更多...
VOID	LOS_PmLockInfoShow (struct SeqBuf *m)
	显示所有电源锁信息 更多...
UINT32	OsPmLockRequest (const CHAR *name, UINT32 swtmrID)
	请求获取指定的锁 更多...
UINT32	LOS_PmLockRequest (const CHAR *name)
	Request to obtain the lock in current mode, so that the system will not enter this mode when it enters the idle task next time. 更多...
UINT32	LOS_PmLockRelease (const CHAR *name)
	Release the lock in current mode so that the next time the system enters the idle task, it will enter this mode. 更多...
STATIC VOID	OsPmSwtmrHandler (UINT32 arg)
UINT32	LOS_PmTimeLockRequest (const CHAR *name, UINT64 millisecond)
	Request to obtain the lock in current mode, so that the system will not enter this mode when it enters the idle task next time. After the specified interval, the lock is automatically released. 更多...
UINT32	LOS_PmReadLock (VOID)
	Gets the current PM lock status. 更多...
UINT32	LOS_PmSuspend (UINT32 wakeCount)
	The system enters the low-power flow. 更多...
BOOL	OsIsPmMode (VOID)
STATIC UINT32	OsPmSuspendDefaultHandler (VOID)
UINT32	OsPmInit (VOID)
	LOS_MODULE_INIT (OsPmInit, LOS_INIT_LEVEL_KMOD_EXTENDED)

变量
STATIC EVENT_CB_S	g_pmEvent
STATIC LosPmCB	g_pmCB
	电源控制块全局遍历 更多...
STATIC LosPmSysctrl	g_sysctrl

类型定义说明

Suspend

typedef UINT32(* Suspend) (UINT32 mode)

电源锁控制块

在文件 los_pm.c 第 96 行定义.

函数说明

LOS_MODULE_INIT()

LOS_MODULE_INIT	(	OsPmInit	,
		LOS_INIT_LEVEL_KMOD_EXTENDED
	)

LOS_PmLockCountGet()

UINT32 LOS_PmLockCountGet

(

VOID

)

获取电源锁数量

Get the low power mode of the current system.

在文件 los_pm.c 第 443 行定义.

{
    UINT16 count;
    LosPmCB *pm = &g_pmCB;
 
    LOS_SpinLock(&g_pmSpin);
    count = pm->lock;
    LOS_SpinUnlock(&g_pmSpin);
 
    return (UINT32)count;
}

函数调用图:

LOS_PmLockInfoShow()

VOID LOS_PmLockInfoShow

(

struct SeqBuf *

m

)

显示所有电源锁信息

Output the locking information of the pm lock.

在文件 los_pm.c 第 455 行定义.

{
    LosPmCB *pm = &g_pmCB;
    OsPmLockCB *lock = NULL;
    LOS_DL_LIST *head = &pm->lockList;
    LOS_DL_LIST *list = head->pstNext;
 
    LOS_SpinLock(&g_pmSpin);
    while (list != head) {//遍历链表
        lock = LOS_DL_LIST_ENTRY(list, OsPmLockCB, list);//获取 OsPmLockCB 实体
        PM_INFO_SHOW(m, "%-30s%5u\n\r", lock->name, lock->count); //打印名称和数量
        list = list->pstNext;
    }
    LOS_SpinUnlock(&g_pmSpin);
 
    return;
}

函数调用图:

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LOS_PmLockRelease()

UINT32 LOS_PmLockRelease

(

const CHAR *

name

)

Release the lock in current mode so that the next time the system enters the idle task, it will enter this mode.

Description:

This API is used to release the lock in current mode.

注意

None.

参数

name	[IN] Who releases the lock.

返回值

error

code, LOS_OK means success.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

LOS_PmLockRequest

在文件 los_pm.c 第 552 行定义.

{
    UINT32 ret = LOS_EINVAL;
    LosPmCB *pm = &g_pmCB;
    OsPmLockCB *lock = NULL;
    LOS_DL_LIST *head = &pm->lockList;
    LOS_DL_LIST *list = head->pstNext;
    OsPmLockCB *lockFree = NULL;
    BOOL isRelease = FALSE;
    UINT32 mode;
 
    if (name == NULL) {
        return LOS_EINVAL;
    }
 
    if (OS_INT_ACTIVE) {
        return LOS_EINTR;
    }
 
    LOS_SpinLock(&g_pmSpin);
    if (pm->lock == 0) {
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_EINVAL;
    }
 
    mode = (UINT32)pm->pmMode;
    while (list != head) {//遍历找到参数对应的 OsPmLockCB
        OsPmLockCB *listNode = LOS_DL_LIST_ENTRY(list, OsPmLockCB, list);
        if (strcmp(name, listNode->name) == 0) {
            lock = listNode;
            break;//找到返回
        }
 
        list = list->pstNext;//继续遍历下一个结点
    }
 
    if (lock == NULL) {
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_EINVAL;
    } else if (lock->count > 0) {//有记录且有数量
        lock->count--;  //数量减少
        if (lock->count == 0) {//没有了
            LOS_ListDelete(&lock->list);//讲自己从链表中摘除
            lockFree = lock;
        }
    }
 
    if (pm->lock > 0) {
        pm->lock--;
        if (pm->lock == 0) {
            isRelease = TRUE;
        }
        ret = LOS_OK;
    }
    LOS_SpinUnlock(&g_pmSpin);
 
    if (lockFree != NULL) {
        (VOID)LOS_SwtmrDelete(lockFree->swtmrID);
        (VOID)LOS_MemFree((VOID *)OS_SYS_MEM_ADDR, lockFree);
    }
 
    if (isRelease && (mode > LOS_SYS_NORMAL_SLEEP)) {
        (VOID)LOS_EventWrite(&g_pmEvent, PM_EVENT_LOCK_RELEASE);
    }
 
    return ret;
}

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LOS_PmLockRequest()

UINT32 LOS_PmLockRequest

(

const CHAR *

name

)

Request to obtain the lock in current mode, so that the system will not enter this mode when it enters the idle task next time.

Description:

This API is used to obtain the lock in current mode.

注意

None.

参数

name	[IN] Who requests the lock.

返回值

error

code, LOS_OK means success.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

LOS_PmLockRelease

在文件 los_pm.c 第 543 行定义.

{
    if (name == NULL) {
        return LOS_EINVAL;
    }
 
    return OsPmLockRequest(name, OS_INVALID);
}

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LOS_PmModeGet()

LOS_SysSleepEnum LOS_PmModeGet

(

VOID

)

获取电源模式

Get the low power mode of the current system.

在文件 los_pm.c 第 400 行定义.

{
    LOS_SysSleepEnum mode;
    LosPmCB *pm = &g_pmCB;
 
    LOS_SpinLock(&g_pmSpin);
    mode = pm->pmMode;
    LOS_SpinUnlock(&g_pmSpin);
 
    return mode;
}

函数调用图:

LOS_PmModeSet()

UINT32 LOS_PmModeSet

(

LOS_SysSleepEnum

mode

)

Set low power mode.

Description:

This API is used to set low power mode.

注意

None.

参数

mode	[IN] low power mode.

返回值

error

code, LOS_OK means success.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

LOS_PmModeGet

在文件 los_pm.c 第 411 行定义.

{
    LosPmCB *pm = &g_pmCB;
    INT32 sleepMode = (INT32)mode;
 
    if ((sleepMode < 0) || (sleepMode > LOS_SYS_SHUTDOWN)) {
        return LOS_EINVAL;
    }
 
    LOS_SpinLock(&g_pmSpin);
    if ((mode == LOS_SYS_LIGHT_SLEEP) && (pm->sysctrl->lightSuspend == NULL)) {
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_EINVAL;
    }
 
    if ((mode == LOS_SYS_DEEP_SLEEP) && (pm->sysctrl->deepSuspend == NULL)) {
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_EINVAL;
    }
 
    if ((mode == LOS_SYS_SHUTDOWN) && (pm->sysctrl->shutdownSuspend == NULL)) {
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_EINVAL;
    }
 
    pm->pmMode = mode;
    LOS_SpinUnlock(&g_pmSpin);
 
    return LOS_OK;
}

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LOS_PmReadLock()

UINT32 LOS_PmReadLock

(

VOID

)

Gets the current PM lock status.

Description:

This API is used to Get the current PM lock status.

注意

None.

参数

None.

返回值

Number

of awakening sources of the device.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

在文件 los_pm.c 第 664 行定义.

{
    UINT32 ret = LOS_EventRead(&g_pmEvent, PM_EVENT_LOCK_MASK, LOS_WAITMODE_OR | LOS_WAITMODE_CLR, LOS_WAIT_FOREVER);
    if (ret > PM_EVENT_LOCK_MASK) {
        PRINT_ERR("%s event read failed! ERROR: 0x%x\n", __FUNCTION__, ret);
    }
 
    return LOS_OK;
}

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LOS_PmRegister()

UINT32 LOS_PmRegister	(	LOS_PmNodeType	type,
		VOID *	node
	)

Register a power management node.

Description:

This API is used to register a power management node.

注意

None.

参数

type	[IN] The types supported by the PM module.
node	[IN] power management node.

返回值

error

code, LOS_OK means success.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

LOS_PmUnregister

在文件 los_pm.c 第 319 行定义.

{
    LosPmCB *pm = &g_pmCB;
 
    if (node == NULL) {
        return LOS_EINVAL;
    }
 
    switch (type) {
        case LOS_PM_TYPE_DEVICE:
            return OsPmDeviceRegister(pm, (LosPmDevice *)node);
        case LOS_PM_TYPE_TICK_TIMER:
            PRINT_ERR("Pm, %d is an unsupported type\n", type);
            return LOS_EINVAL;
        case LOS_PM_TYPE_SYSCTRL:
            return OsPmSysctrlRegister(pm, (LosPmSysctrl *)node);
        default:
            break;
    }
 
    return LOS_EINVAL;
}

函数调用图:

LOS_PmSuspend()

UINT32 LOS_PmSuspend

(

UINT32

wakeCount

)

The system enters the low-power flow.

Description:

This API is used to enter the system into a low-power process.

注意

None.

参数

wakeCount

[IN] Number of wake sources.

返回值

error

code, LOS_OK means success.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

在文件 los_pm.c 第 674 行定义.

{
    (VOID)wakeCount;
    return OsPmSuspendSleep(&g_pmCB);
}

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LOS_PmTimeLockRequest()

UINT32 LOS_PmTimeLockRequest	(	const CHAR *	name,
		UINT64	millisecond
	)

Request to obtain the lock in current mode, so that the system will not enter this mode when it enters the idle task next time. After the specified interval, the lock is automatically released.

Description:

This API is used to obtain the delay lock in current mode.

注意

None.

参数

name	[IN] Who requests the lock.
millisecond	[IN] Specifies the time to automatically release the lock.

返回值

error

code, LOS_OK means success.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

LOS_PmLockRelease

在文件 los_pm.c 第 629 行定义.

{
    UINT32 ticks;
    UINT16 swtmrID;
    UINT32 ret;
 
    if ((name == NULL) || !millisecond) {
        return LOS_EINVAL;
    }
 
    ticks = (UINT32)((millisecond + OS_MS_PER_TICK - 1) / OS_MS_PER_TICK);
#if (LOSCFG_BASE_CORE_SWTMR_ALIGN == 1)
    ret = LOS_SwtmrCreate(ticks, LOS_SWTMR_MODE_ONCE, OsPmSwtmrHandler, &swtmrID, (UINT32)(UINTPTR)name,
                          OS_SWTMR_ROUSES_ALLOW, OS_SWTMR_ALIGN_INSENSITIVE);
#else
    ret = LOS_SwtmrCreate(ticks, LOS_SWTMR_MODE_ONCE, OsPmSwtmrHandler, &swtmrID, (UINT32)(UINTPTR)name);
#endif
    if (ret != LOS_OK) {
        return ret;
    }
 
    ret = OsPmLockRequest(name, swtmrID);
    if (ret != LOS_OK) {
        (VOID)LOS_SwtmrDelete(swtmrID);
        return ret;
    }
 
    ret = LOS_SwtmrStart(swtmrID);
    if (ret != LOS_OK) {
        (VOID)LOS_PmLockRelease(name);
    }
 
    return ret;
}

函数调用图:

LOS_PmUnregister()

UINT32 LOS_PmUnregister	(	LOS_PmNodeType	type,
		VOID *	node
	)

Unregister a power management node.

Description:

This API is used to unregister a power management node.

注意

None.

参数

type	[IN] The types supported by the PM module.
node	[IN] power management node.

返回值

error

code, LOS_OK means success.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

LOS_PmRegister

在文件 los_pm.c 第 367 行定义.

{
    LosPmCB *pm = &g_pmCB;
 
    if (node == NULL) {
        return LOS_EINVAL;
    }
 
    switch (type) {
        case LOS_PM_TYPE_DEVICE:
            return OsPmDeviceUnregister(pm, (LosPmDevice *)node);
        case LOS_PM_TYPE_TICK_TIMER:
            PRINT_ERR("Pm, %d is an unsupported type\n", type);
            return LOS_EINVAL;
        case LOS_PM_TYPE_SYSCTRL:
            return OsPmSysctrlUnregister(pm, (LosPmSysctrl *)node);
        default:
            break;
    }
 
    return LOS_EINVAL;
}

函数调用图:

LOS_PmWakeSet()

VOID LOS_PmWakeSet

(

VOID

)

Set the system wake up flag.

Description:

This API is used to set the system wake-up flag.

注意

None.

参数

None.

返回值

None.

Dependency:

• los_pm.h: the header file that contains the API declaration.

参见

在文件 los_pm.c 第 390 行定义.

{
    LosPmCB *pm = &g_pmCB;
 
    LOS_SpinLock(&g_pmSpin);
    pm->isWake = TRUE;
    LOS_SpinUnlock(&g_pmSpin);
    return;
}

函数调用图:

OsIsPmMode()

STATIC INLINE BOOL OsIsPmMode

(

VOID

)

在文件 los_pm.c 第 680 行定义.

{
    LosPmCB *pm = &g_pmCB;
 
    LOS_SpinLock(&g_pmSpin);
    if ((pm->sysMode != LOS_SYS_NORMAL_SLEEP) && (pm->lock == 0)) {
        LOS_SpinUnlock(&g_pmSpin);
        return TRUE;
    }
    LOS_SpinUnlock(&g_pmSpin);
    return FALSE;
}

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OsPmCpuResume()

STATIC VOID OsPmCpuResume

(

LosPmCB *

pm

)

在文件 los_pm.c 第 137 行定义.

{
    if ((pm->sysMode == LOS_SYS_NORMAL_SLEEP) && (pm->sysctrl->normalResume != NULL)) {
        pm->sysctrl->normalResume();
    } else if ((pm->sysMode == LOS_SYS_LIGHT_SLEEP) && (pm->sysctrl->lightResume != NULL)) {
        pm->sysctrl->lightResume();
    } else if ((pm->sysMode == LOS_SYS_DEEP_SLEEP) && (pm->sysctrl->deepResume != NULL)) {
        pm->sysctrl->deepResume();
    }
}

这是这个函数的调用关系图:

OsPmCpuSuspend()

VOID OsPmCpuSuspend

(

LosPmCB *

pm

)

在文件 los_pm.c 第 148 行定义.

{
    /* cpu enter low power mode */
    LOS_ASSERT(pm->sysctrl != NULL);
 
    if (pm->sysMode == LOS_SYS_NORMAL_SLEEP) {
        pm->sysctrl->normalSuspend();
    } else if (pm->sysMode == LOS_SYS_LIGHT_SLEEP) {
        pm->sysctrl->lightSuspend();
    } else if (pm->sysMode == LOS_SYS_DEEP_SLEEP) {
        pm->sysctrl->deepSuspend();
    } else {
        pm->sysctrl->shutdownSuspend();
    }
}

这是这个函数的调用关系图:

OsPmDeviceRegister()

STATIC UINT32 OsPmDeviceRegister	(	LosPmCB *	pm,
		LosPmDevice *	device
	)

在文件 los_pm.c 第 268 行定义.

{
    if ((device->suspend == NULL) || (device->resume == NULL)) {
        return LOS_EINVAL;
    }
 
    LOS_SpinLock(&g_pmSpin);
    pm->device = device;
    LOS_SpinUnlock(&g_pmSpin);
 
    return LOS_OK;
}

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OsPmDeviceUnregister()

STATIC UINT32 OsPmDeviceUnregister	(	LosPmCB *	pm,
		LosPmDevice *	device
	)

在文件 los_pm.c 第 342 行定义.

{
    LOS_SpinLock(&g_pmSpin);
    if (pm->device == device) {
        pm->device = NULL;
        pm->pmMode = LOS_SYS_NORMAL_SLEEP;
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_OK;
    }
 
    LOS_SpinUnlock(&g_pmSpin);
    return LOS_EINVAL;
}

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OsPmInit()

UINT32 OsPmInit

(

VOID

)

在文件 los_pm.c 第 715 行定义.

{
    LosPmCB *pm = &g_pmCB;
 
    (VOID)memset_s(pm, sizeof(LosPmCB), 0, sizeof(LosPmCB));//全局链表置0
 
    pm->pmMode = LOS_SYS_NORMAL_SLEEP;
    LOS_ListInit(&pm->lockList);//初始化链表
    (VOID)LOS_EventInit(&g_pmEvent);
 
    OsPmSysctrlInit();
    pm->sysctrl = &g_sysctrl;
    return LOS_OK;
}

函数调用图:

OsPmLockRequest()

UINT32 OsPmLockRequest	(	const CHAR *	name,
		UINT32	swtmrID
	)

请求获取指定的锁

在文件 los_pm.c 第 473 行定义.

{
    INT32 len;
    errno_t err;
    UINT32 ret = LOS_EINVAL;
    LosPmCB *pm = &g_pmCB;
    OsPmLockCB *lock = NULL;
    LOS_DL_LIST *head = &pm->lockList;
    LOS_DL_LIST *list = head->pstNext;
 
    if (OS_INT_ACTIVE) {
        return LOS_EINTR;
    }
 
    len = strlen(name);
    if (len <= 0) {
        return LOS_EINVAL;
    }
 
    LOS_SpinLock(&g_pmSpin);
    if (pm->lock >= OS_PM_LOCK_MAX) {
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_EINVAL;
    }
    //遍历找到参数对应的 OsPmLockCB 
    while (list != head) {
        OsPmLockCB *listNode = LOS_DL_LIST_ENTRY(list, OsPmLockCB, list);
        if (strcmp(name, listNode->name) == 0) {
            lock = listNode;
            break;
        }
 
        list = list->pstNext;
    }
    
    if (lock == NULL) {//没有记录则创建记录
        lock = LOS_MemAlloc((VOID *)OS_SYS_MEM_ADDR, sizeof(OsPmLockCB));
        if (lock == NULL) {
            LOS_SpinUnlock(&g_pmSpin);
            return LOS_ENOMEM;
        }
 
        err = memcpy_s(lock->name, OS_PM_LOCK_NAME_MAX, name, len + 1);
        if (err != EOK) {
            LOS_SpinUnlock(&g_pmSpin);
            (VOID)LOS_MemFree((VOID *)OS_SYS_MEM_ADDR, lock);
            return err;
        }
        lock->count = 1;//数量增加
        lock->swtmrID = swtmrID;
        LOS_ListTailInsert(head, &lock->list);//从尾部插入链表中
    } else if (lock->count < OS_PM_LOCK_MAX) {
        lock->count++;//存在记录时,数量增加
    }
 
    if ((lock->swtmrID != OS_INVALID) && (lock->count > 1)) {
        lock->count--;
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_EINVAL;
    }
 
    if (pm->lock < OS_PM_LOCK_MAX) {
        pm->lock++;//总数量增加
        ret = LOS_OK;
    }
 
    LOS_SpinUnlock(&g_pmSpin);
    return ret;
}

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OsPmResumePrepare()

STATIC VOID OsPmResumePrepare	(	LosPmCB *	pm,
		UINT32	mode,
		UINT32	prepare
	)

在文件 los_pm.c 第 164 行定义.

{
    if ((prepare == 0) && (pm->device != NULL) && (pm->device->resume != NULL)) {
        pm->device->resume(mode);
    }
 
    if (((prepare == 0) || (prepare == OS_PM_SYS_DEVICE_EARLY)) && (pm->sysctrl->late != NULL)) {
        pm->sysctrl->late(mode);
    }
}

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OsPmSuspendCheck()

STATIC UINT32 OsPmSuspendCheck	(	LosPmCB *	pm,
		Suspend *	sysSuspendEarly,
		Suspend *	deviceSuspend,
		LOS_SysSleepEnum *	mode
	)

在文件 los_pm.c 第 198 行定义.

{
    LOS_SpinLock(&g_pmSpin);
    pm->sysMode = pm->pmMode;
    if (pm->lock > 0) {
        pm->sysMode = LOS_SYS_NORMAL_SLEEP;
        LOS_SpinUnlock(&g_pmSpin);
        return LOS_NOK;
    }
 
    pm->isWake = FALSE;
    *mode = pm->sysMode;
    *sysSuspendEarly = pm->sysctrl->early;
    if (pm->device != NULL) {
        *deviceSuspend = pm->device->suspend;
    } else {
        *deviceSuspend = NULL;
    }
    LOS_SpinUnlock(&g_pmSpin);
    return LOS_OK;
}

函数调用图:

这是这个函数的调用关系图:

OsPmSuspendDefaultHandler()

STATIC UINT32 OsPmSuspendDefaultHandler

(

VOID

)

在文件 los_pm.c 第 693 行定义.

{
    PRINTK("Enter pm default handler!!!\n");
    WFI;
    return LOS_OK;
}

这是这个函数的调用关系图:

OsPmSuspendPrepare()

STATIC UINT32 OsPmSuspendPrepare	(	Suspend	sysSuspendEarly,
		Suspend	deviceSuspend,
		UINT32	mode,
		UINT32 *	prepare
	)

在文件 los_pm.c 第 175 行定义.

{
    UINT32 ret;
 
    if (sysSuspendEarly != NULL) {
        ret = sysSuspendEarly(mode);
        if (ret != LOS_OK) {
            *prepare = OS_PM_SYS_EARLY;
            return ret;
        }
    }
 
    if (deviceSuspend != NULL) {
        ret = deviceSuspend(mode);
        if (ret != LOS_OK) {
            *prepare = OS_PM_SYS_DEVICE_EARLY;
            return ret;
        }
    }
 
    return LOS_OK;
}

这是这个函数的调用关系图:

OsPmSuspendSleep()

STATIC UINT32 OsPmSuspendSleep

(

LosPmCB *

pm

)

在文件 los_pm.c 第 220 行定义.

{
    UINT32 ret, intSave;
    Suspend sysSuspendEarly, deviceSuspend;
    LOS_SysSleepEnum mode;
    UINT32 prepare = 0;
    BOOL tickTimerStop = FALSE;
 
    ret = OsPmSuspendCheck(pm, &sysSuspendEarly, &deviceSuspend, &mode);
    if (ret != LOS_OK) {
        PRINT_ERR("Pm suspend mode is normal sleep! lock count %d\n", pm->lock);
        return ret;
    }
 
    ret = OsPmSuspendPrepare(sysSuspendEarly, deviceSuspend, (UINT32)mode, &prepare);
    if (ret != LOS_OK) {
        LOS_SpinLockSave(&g_pmSpin, &intSave);
        LOS_TaskLock();
        goto EXIT;
    }
 
    LOS_SpinLockSave(&g_pmSpin, &intSave);
    LOS_TaskLock();
    if (pm->isWake || (pm->lock > 0)) {
        goto EXIT;
    }
 
    tickTimerStop = OsPmTickTimerStop(pm);
    if (!tickTimerStop) {
        OsSchedResponseTimeReset(0);
        OsSchedExpireTimeUpdate();
    }
 
    OsPmCpuSuspend(pm);
 
    OsPmCpuResume(pm);
 
    OsPmTickTimerStart(pm);
 
EXIT:
    pm->sysMode = LOS_SYS_NORMAL_SLEEP;
    OsPmResumePrepare(pm, (UINT32)mode, prepare);
 
    LOS_SpinUnlockRestore(&g_pmSpin, intSave);
    LOS_TaskUnlock();
    return ret;
}

函数调用图:

这是这个函数的调用关系图:

OsPmSwtmrHandler()

STATIC VOID OsPmSwtmrHandler

(

UINT32

arg

)

在文件 los_pm.c 第 620 行定义.

{
    const CHAR *name = (const CHAR *)arg;
    UINT32 ret = LOS_PmLockRelease(name);
    if (ret != LOS_OK) {
        PRINT_ERR("Pm delay lock %s release faled! : 0x%x\n", name, ret);
    }
}

函数调用图:

这是这个函数的调用关系图:

OsPmSysctrlInit()

STATIC VOID OsPmSysctrlInit

(

VOID

)

在文件 los_pm.c 第 700 行定义.

{
    /* Default handler functions, which are implemented by the product */
    g_sysctrl.early = NULL;
    g_sysctrl.late = NULL;
    g_sysctrl.normalSuspend = OsPmSuspendDefaultHandler;
    g_sysctrl.normalResume = NULL;
    g_sysctrl.lightSuspend = OsPmSuspendDefaultHandler;
    g_sysctrl.lightResume = NULL;
    g_sysctrl.deepSuspend = OsPmSuspendDefaultHandler;
    g_sysctrl.deepResume = NULL;
    g_sysctrl.shutdownSuspend = NULL;
    g_sysctrl.shutdownResume = NULL;
}

函数调用图:

这是这个函数的调用关系图:

OsPmSysctrlRegister()

STATIC UINT32 OsPmSysctrlRegister	(	LosPmCB *	pm,
		LosPmSysctrl *	sysctrl
	)

在文件 los_pm.c 第 281 行定义.

{
    LOS_SpinLock(&g_pmSpin);
    if (sysctrl->early != NULL) {
        pm->sysctrl->early = sysctrl->early;
    }
    if (sysctrl->late != NULL) {
        pm->sysctrl->late = sysctrl->late;
    }
    if (sysctrl->normalSuspend != NULL) {
        pm->sysctrl->normalSuspend = sysctrl->normalSuspend;
    }
    if (sysctrl->normalResume != NULL) {
        pm->sysctrl->normalResume = sysctrl->normalResume;
    }
    if (sysctrl->lightSuspend != NULL) {
        pm->sysctrl->lightSuspend = sysctrl->lightSuspend;
    }
    if (sysctrl->lightResume != NULL) {
        pm->sysctrl->lightResume = sysctrl->lightResume;
    }
    if (sysctrl->deepSuspend != NULL) {
        pm->sysctrl->deepSuspend = sysctrl->deepSuspend;
    }
    if (sysctrl->deepResume != NULL) {
        pm->sysctrl->deepResume = sysctrl->deepResume;
    }
    if (sysctrl->shutdownSuspend != NULL) {
        pm->sysctrl->shutdownSuspend = sysctrl->shutdownSuspend;
    }
    if (sysctrl->shutdownResume != NULL) {
        pm->sysctrl->shutdownResume = sysctrl->shutdownResume;
    }
    LOS_SpinUnlock(&g_pmSpin);
 
    return LOS_OK;
}

函数调用图:

这是这个函数的调用关系图:

OsPmSysctrlUnregister()

STATIC UINT32 OsPmSysctrlUnregister	(	LosPmCB *	pm,
		LosPmSysctrl *	sysctrl
	)

在文件 los_pm.c 第 356 行定义.

{
    (VOID)sysctrl;
    LOS_SpinLock(&g_pmSpin);
    OsPmSysctrlInit();
    pm->pmMode = LOS_SYS_NORMAL_SLEEP;
    LOS_SpinUnlock(&g_pmSpin);
 
    return LOS_OK;
}

函数调用图:

这是这个函数的调用关系图:

OsPmTickTimerStart()

STATIC VOID OsPmTickTimerStart

(

LosPmCB *

pm

)

在文件 los_pm.c 第 125 行定义.

{
    (VOID)pm;
    return;
}

这是这个函数的调用关系图:

OsPmTickTimerStop()

STATIC BOOL OsPmTickTimerStop

(

LosPmCB *

pm

)

在文件 los_pm.c 第 131 行定义.

{
    (VOID)pm;
    return FALSE;
}

这是这个函数的调用关系图:

SPIN_LOCK_INIT()

STATIC SPIN_LOCK_INIT

(

g_pmSpin

)

电源模块自旋锁

变量说明

g_pmCB

STATIC LosPmCB g_pmCB

电源控制块全局遍历

在文件 los_pm.c 第 119 行定义.

g_pmEvent

STATIC EVENT_CB_S g_pmEvent

在文件 los_pm.c 第 118 行定义.

g_sysctrl

STATIC LosPmSysctrl g_sysctrl

在文件 los_pm.c 第 121 行定义.