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/*
* Copyright (c) 2014-2016 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This file was originally distributed by Qualcomm Atheros, Inc.
* under proprietary terms before Copyright ownership was assigned
* to the Linux Foundation.
*/
/**
* DOC: i_qdf_timer
* This file provides OS dependent timer API's.
*/
#ifndef _I_QDF_TIMER_H
#define _I_QDF_TIMER_H
#include <linux/version.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/jiffies.h>
#include <qdf_types.h>
/* timer data type */
typedef struct timer_list __qdf_timer_t;
typedef void (*qdf_dummy_timer_func_t)(unsigned long arg);
/**
* __qdf_timer_init() - initialize a softirq timer
* @hdl: OS handle
* @timer: Pointer to timer object
* @func: Function pointer
* @arg: Arguement
* @type: deferrable or non deferrable timer type
*
* Timer type QDF_TIMER_TYPE_SW means its a deferrable sw timer which will
* not cause CPU wake upon expiry
* Timer type QDF_TIMER_TYPE_WAKE_APPS means its a non-deferrable timer which
* will cause CPU wake up on expiry
*
* Return: QDF_STATUS
*/
static inline QDF_STATUS __qdf_timer_init(qdf_handle_t hdl,
struct timer_list *timer,
qdf_timer_func_t func, void *arg,
QDF_TIMER_TYPE type)
{
if (QDF_TIMER_TYPE_SW == type)
init_timer_deferrable(timer);
else
init_timer(timer);
timer->function = (qdf_dummy_timer_func_t) func;
timer->data = (unsigned long)arg;
return QDF_STATUS_SUCCESS;
}
/**
* __qdf_timer_start() - start a qdf softirq timer
* @timer: Pointer to timer object
* @delay: Delay in milli seconds
*
* Return: QDF_STATUS
*/
static inline QDF_STATUS __qdf_timer_start(struct timer_list *timer,
uint32_t delay)
{
timer->expires = jiffies + msecs_to_jiffies(delay);
add_timer(timer);
return QDF_STATUS_SUCCESS;
}
/**
* __qdf_timer_mod() - modify a timer
* @timer: Pointer to timer object
* @delay: Delay in milli seconds
*
* Return: QDF_STATUS
*/
static inline QDF_STATUS __qdf_timer_mod(struct timer_list *timer,
uint32_t delay)
{
mod_timer(timer, jiffies + msecs_to_jiffies(delay));
return QDF_STATUS_SUCCESS;
}
/**
* __qdf_timer_stop() - cancel a timer
* @timer: Pointer to timer object
*
* Return: true if timer was cancelled and deactived,
* false if timer was cancelled but already got fired.
*/
static inline bool __qdf_timer_stop(struct timer_list *timer)
{
if (likely(del_timer(timer)))
return 1;
else
return 0;
}
/**
* __qdf_timer_free() - free a qdf timer
* @timer: Pointer to timer object
*
* Return: true if timer was cancelled and deactived,
* false if timer was cancelled but already got fired.
*/
static inline void __qdf_timer_free(struct timer_list *timer)
{
del_timer_sync(timer);
}
/**
* __qdf_sostirq_timer_sync_cancel() - Synchronously canel a timer
* @timer: Pointer to timer object
*
* Synchronization Rules:
* 1. caller must make sure timer function will not use
* qdf_set_timer to add iteself again.
* 2. caller must not hold any lock that timer function
* is likely to hold as well.
* 3. It can't be called from interrupt context.
*
* Return: true if timer was cancelled and deactived,
* false if timer was cancelled but already got fired.
*/
static inline bool __qdf_timer_sync_cancel(struct timer_list *timer)
{
return del_timer_sync(timer);
}
#endif /*_QDF_TIMER_PVT_H*/
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