330 lines
8.4 KiB
C
Executable File
330 lines
8.4 KiB
C
Executable File
/*
|
|
* common_timer.c - Linux kernel modules for sensortek stk6d2x
|
|
* ambient light sensor (Common function)
|
|
*
|
|
* Copyright (C) 2019 Bk, sensortek Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/input.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/pm_wakeup.h>
|
|
#include <common_define.h>
|
|
|
|
typedef struct timer_manager timer_manager;
|
|
|
|
struct timer_manager
|
|
{
|
|
struct work_struct stk_work;
|
|
struct hrtimer stk_hrtimer;
|
|
struct workqueue_struct *stk_wq;
|
|
ktime_t timer_interval;
|
|
|
|
stk_timer_info *timer_info;
|
|
} timer_mgr_default = {.timer_info = 0};
|
|
|
|
#define MAX_LINUX_TIMER_MANAGER_NUM 5
|
|
|
|
timer_manager linux_timer_mgr[MAX_LINUX_TIMER_MANAGER_NUM];
|
|
|
|
static timer_manager* parser_timer(struct hrtimer *timer)
|
|
{
|
|
int timer_idx = 0;
|
|
|
|
if (timer == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
for (timer_idx = 0; timer_idx < MAX_LINUX_TIMER_MANAGER_NUM; timer_idx ++)
|
|
{
|
|
if (&linux_timer_mgr[timer_idx].stk_hrtimer == timer)
|
|
{
|
|
return &linux_timer_mgr[timer_idx];
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static enum hrtimer_restart timer_func(struct hrtimer *timer)
|
|
{
|
|
timer_manager *timer_mgr = parser_timer(timer);
|
|
|
|
if (timer_mgr == NULL)
|
|
{
|
|
printk(KERN_ERR "%s: timer_mgr is NULL\n", __func__);
|
|
return HRTIMER_NORESTART;
|
|
}
|
|
|
|
if (timer_mgr->stk_wq == NULL)
|
|
{
|
|
printk(KERN_ERR "%s: timer_mgr->stk_wq is NULL\n", __func__);
|
|
return HRTIMER_NORESTART;
|
|
}
|
|
|
|
if (timer_mgr->timer_info == NULL)
|
|
{
|
|
printk(KERN_ERR "%s: timer_mgr->timer_info is NULL\n", __func__);
|
|
return HRTIMER_NORESTART;
|
|
}
|
|
|
|
queue_work(timer_mgr->stk_wq, &timer_mgr->stk_work);
|
|
hrtimer_forward_now(&timer_mgr->stk_hrtimer, timer_mgr->timer_interval);
|
|
return HRTIMER_RESTART;
|
|
}
|
|
|
|
static timer_manager* parser_work(struct work_struct *work)
|
|
{
|
|
int timer_idx = 0;
|
|
|
|
if (work == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
for (timer_idx = 0; timer_idx < MAX_LINUX_TIMER_MANAGER_NUM; timer_idx ++)
|
|
{
|
|
if (&linux_timer_mgr[timer_idx].stk_work == work)
|
|
{
|
|
return &linux_timer_mgr[timer_idx];
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void timer_callback(struct work_struct *work)
|
|
{
|
|
timer_manager *timer_mgr = parser_work(work);
|
|
|
|
if (timer_mgr == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
timer_mgr->timer_info->timer_cb(timer_mgr->timer_info);
|
|
}
|
|
|
|
int register_timer(stk_timer_info *t_info)
|
|
{
|
|
int timer_idx = 0;
|
|
|
|
if (t_info == NULL)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
for (timer_idx = 0; timer_idx < MAX_LINUX_TIMER_MANAGER_NUM; timer_idx ++)
|
|
{
|
|
if (!linux_timer_mgr[timer_idx].timer_info)
|
|
{
|
|
linux_timer_mgr[timer_idx].timer_info = t_info;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info == t_info)
|
|
{
|
|
//already register
|
|
if (linux_timer_mgr[timer_idx].timer_info->change_interval_time)
|
|
{
|
|
linux_timer_mgr[timer_idx].timer_info->change_interval_time = 0;
|
|
printk(KERN_ERR "%s: chang interval time\n", __func__);
|
|
switch (linux_timer_mgr[timer_idx].timer_info->timer_unit)
|
|
{
|
|
case N_SECOND:
|
|
linux_timer_mgr[timer_idx].timer_interval = ns_to_ktime(linux_timer_mgr[timer_idx].timer_info->interval_time);
|
|
break;
|
|
|
|
case U_SECOND:
|
|
linux_timer_mgr[timer_idx].timer_interval = ns_to_ktime(linux_timer_mgr[timer_idx].timer_info->interval_time * NSEC_PER_USEC);
|
|
break;
|
|
|
|
case M_SECOND:
|
|
linux_timer_mgr[timer_idx].timer_interval = ns_to_ktime(linux_timer_mgr[timer_idx].timer_info->interval_time * NSEC_PER_MSEC);
|
|
break;
|
|
|
|
case SECOND:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
printk(KERN_ERR "%s: this timer is registered\n", __func__);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if search/register timer manager not successfully
|
|
if (timer_idx == MAX_LINUX_TIMER_MANAGER_NUM)
|
|
{
|
|
printk(KERN_ERR "%s: timer_idx out of range %d\n", __func__, timer_idx);
|
|
return -1;
|
|
}
|
|
|
|
printk(KERN_ERR "%s: register timer name %s\n", __func__, linux_timer_mgr[timer_idx].timer_info->wq_name);
|
|
linux_timer_mgr[timer_idx].stk_wq = create_singlethread_workqueue(linux_timer_mgr[timer_idx].timer_info->wq_name);
|
|
if (linux_timer_mgr[timer_idx].stk_wq == NULL)
|
|
{
|
|
printk(KERN_ERR "%s: create single thread workqueue fail\n", __func__);
|
|
linux_timer_mgr[timer_idx].timer_info = 0;
|
|
return -1;
|
|
}
|
|
|
|
INIT_WORK(&linux_timer_mgr[timer_idx].stk_work, timer_callback);
|
|
hrtimer_init(&linux_timer_mgr[timer_idx].stk_hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
|
|
|
|
switch (linux_timer_mgr[timer_idx].timer_info->timer_unit)
|
|
{
|
|
case N_SECOND:
|
|
linux_timer_mgr[timer_idx].timer_interval = ns_to_ktime(linux_timer_mgr[timer_idx].timer_info->interval_time);
|
|
break;
|
|
|
|
case U_SECOND:
|
|
linux_timer_mgr[timer_idx].timer_interval = ns_to_ktime(linux_timer_mgr[timer_idx].timer_info->interval_time * NSEC_PER_USEC);
|
|
break;
|
|
|
|
case M_SECOND:
|
|
linux_timer_mgr[timer_idx].timer_interval = ns_to_ktime(linux_timer_mgr[timer_idx].timer_info->interval_time * NSEC_PER_MSEC);
|
|
break;
|
|
|
|
case SECOND:
|
|
break;
|
|
}
|
|
|
|
linux_timer_mgr[timer_idx].stk_hrtimer.function = timer_func;
|
|
linux_timer_mgr[timer_idx].timer_info->is_exist = true;
|
|
return 0;
|
|
}
|
|
|
|
int start_timer(stk_timer_info *t_info)
|
|
{
|
|
int timer_idx = 0;
|
|
|
|
for (timer_idx = 0; timer_idx < MAX_LINUX_TIMER_MANAGER_NUM; timer_idx ++)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info == t_info)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info->is_exist)
|
|
{
|
|
if (!linux_timer_mgr[timer_idx].timer_info->is_active)
|
|
{
|
|
hrtimer_start(&linux_timer_mgr[timer_idx].stk_hrtimer, linux_timer_mgr[timer_idx].timer_interval, HRTIMER_MODE_REL);
|
|
linux_timer_mgr[timer_idx].timer_info->is_active = true;
|
|
printk(KERN_ERR "%s: start timer name %s\n", __func__, linux_timer_mgr[timer_idx].timer_info->wq_name);
|
|
}
|
|
else
|
|
{
|
|
printk(KERN_INFO "%s: %s was already running\n", __func__, linux_timer_mgr[timer_idx].timer_info->wq_name);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int stop_timer(stk_timer_info *t_info)
|
|
{
|
|
int timer_idx = 0;
|
|
|
|
for (timer_idx = 0; timer_idx < MAX_LINUX_TIMER_MANAGER_NUM; timer_idx ++)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info == t_info)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info->is_exist)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info->is_active)
|
|
{
|
|
hrtimer_cancel(&linux_timer_mgr[timer_idx].stk_hrtimer);
|
|
drain_workqueue(linux_timer_mgr[timer_idx].stk_wq);
|
|
linux_timer_mgr[timer_idx].timer_info->is_active = false;
|
|
printk(KERN_ERR "%s: stop timer name %s\n", __func__, linux_timer_mgr[timer_idx].timer_info->wq_name);
|
|
}
|
|
else
|
|
{
|
|
printk(KERN_ERR "%s: %s stop already stop\n", __func__, linux_timer_mgr[timer_idx].timer_info->wq_name);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int remove_timer(stk_timer_info *t_info)
|
|
{
|
|
int timer_idx = 0;
|
|
|
|
for (timer_idx = 0; timer_idx < MAX_LINUX_TIMER_MANAGER_NUM; timer_idx ++)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info == t_info)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info->is_exist)
|
|
{
|
|
if (linux_timer_mgr[timer_idx].timer_info->is_active)
|
|
{
|
|
hrtimer_try_to_cancel(&linux_timer_mgr[timer_idx].stk_hrtimer);
|
|
destroy_workqueue(linux_timer_mgr[timer_idx].stk_wq);
|
|
cancel_work_sync(&linux_timer_mgr[timer_idx].stk_work);
|
|
linux_timer_mgr[timer_idx].timer_info->is_active = false;
|
|
linux_timer_mgr[timer_idx].timer_info->is_exist = false;
|
|
linux_timer_mgr[timer_idx].timer_info = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
void busy_wait(unsigned long min, unsigned long max, BUSY_WAIT_TYPE mode)
|
|
{
|
|
if ((!min) || (!max) || (max < min))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (mode == US_RANGE_DELAY)
|
|
{
|
|
usleep_range(min, max);
|
|
}
|
|
|
|
if (mode == MS_DELAY)
|
|
{
|
|
msleep(max);
|
|
}
|
|
}
|
|
const struct stk_timer_ops stk_t_ops =
|
|
{
|
|
.register_timer = register_timer,
|
|
.start_timer = start_timer,
|
|
.stop_timer = stop_timer,
|
|
.remove = remove_timer,
|
|
.busy_wait = busy_wait,
|
|
};
|