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https://github.com/zephyrproject-rtos/zephyr
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d127864366
When going into DEEP_SLEEP state, the ARC timer needs to be restored. This implements the function to restore the timer after sleep. As the time spent during sleep is not currently known, the timer is expired to reschedule the application task. Jira: ZEP-1224 Change-Id: I22a30d0fd79f177cf166b9a29dc78d68f7d7fbad Signed-off-by: Julien Delayen <julien.delayen@intel.com>
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* Copyright (c) 2015 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file
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* @brief Timer driver API
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*
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*
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* Declare API implemented by system timer driver and used by kernel components.
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*/
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#ifndef _TIMER__H_
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#define _TIMER__H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef _ASMLANGUAGE
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GTEXT(_timer_int_handler)
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#else /* _ASMLANGUAGE */
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#include <device.h>
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extern int _sys_clock_driver_init(struct device *device);
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/*
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* Timer interrupt handler is one of the routines that the driver
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* has to implement, but it is not necessarily an external function.
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* The driver may implement it and use only when setting an
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* interrupt handler by calling irq_connect.
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*/
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extern void _timer_int_handler(void *arg);
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#ifdef CONFIG_SYSTEM_CLOCK_DISABLE
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extern void sys_clock_disable(void);
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#endif
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#ifdef CONFIG_TICKLESS_IDLE
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extern void _timer_idle_enter(int32_t ticks);
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extern void _timer_idle_exit(void);
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#endif /* CONFIG_TICKLESS_IDLE */
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extern void _nano_sys_clock_tick_announce(int32_t ticks);
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extern int sys_clock_device_ctrl(struct device *device,
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uint32_t ctrl_command, void *context);
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/*
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* Currently regarding timers, only loapic timer and arcv2_timer0 implements
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* device pm functionality. For other timers, use default handler in case
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* the app enables CONFIG_DEVICE_POWER_MANAGEMENT.
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*/
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#if !defined(CONFIG_LOAPIC_TIMER) && !defined(CONFIG_ARCV2_TIMER)
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#define sys_clock_device_ctrl device_pm_control_nop
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#endif
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extern int32_t _sys_idle_elapsed_ticks;
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#define _sys_clock_tick_announce() \
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_nano_sys_clock_tick_announce(_sys_idle_elapsed_ticks)
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/**
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* @brief Account for the tick due to the timer interrupt
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*
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* @return N/A
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*/
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static inline void _sys_clock_final_tick_announce(void)
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{
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/*
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* Ticks are both announced and immediately processed at interrupt
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* level. Thus there is only one tick left to announce (and process).
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*/
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_sys_idle_elapsed_ticks = 1;
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_sys_clock_tick_announce();
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}
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TIMER__H_ */
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