fa99ad66d0
There were three separate "announce ticks" entry points exposed for use by drivers. Unify them to just a single z_clock_announce() function, making the "final" tick announcement the business of the driver only, not the kernel. Note the oddness with "_sys_idle_elapsed_ticks": this was a global variable exposed by the kernel. But it was never actually used by the kernel. It was updated and inspected only within the timer drivers, and only so that it could be passed back to the kernel as the default (actually hidden) argument to the announce function. Break this false dependency by putting this variable into each timer driver individually. Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2015 Wind River Systems, Inc.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Timer driver API
|
|
*
|
|
*
|
|
* Declare API implemented by system timer driver and used by kernel components.
|
|
*/
|
|
|
|
#ifndef ZEPHYR_INCLUDE_DRIVERS_SYSTEM_TIMER_H_
|
|
#define ZEPHYR_INCLUDE_DRIVERS_SYSTEM_TIMER_H_
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <device.h>
|
|
#include <stdbool.h>
|
|
|
|
extern int _sys_clock_driver_init(struct device *device);
|
|
|
|
extern void _timer_int_handler(void *arg);
|
|
|
|
#ifdef CONFIG_SYSTEM_CLOCK_DISABLE
|
|
extern void sys_clock_disable(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_TICKLESS_IDLE
|
|
extern void _timer_idle_enter(s32_t ticks);
|
|
extern void _timer_idle_exit(void);
|
|
#else
|
|
#define _timer_idle_enter(ticks) do { } while (false)
|
|
#define _timer_idle_exit() do { } while (false)
|
|
#endif /* CONFIG_TICKLESS_IDLE */
|
|
|
|
/**
|
|
* @brief Announce time progress to the kernel
|
|
*
|
|
* Informs the kernel that the specified number of ticks have elapsed
|
|
* since the last call to z_clock_announce() (or system startup for
|
|
* the first call).
|
|
*
|
|
* @param ticks Elapsed time, in ticks
|
|
*/
|
|
extern void z_clock_announce(s32_t ticks);
|
|
|
|
#ifdef CONFIG_TICKLESS_KERNEL
|
|
extern void _set_time(u32_t time);
|
|
extern u32_t _get_program_time(void);
|
|
extern u32_t _get_remaining_program_time(void);
|
|
extern u32_t _get_elapsed_program_time(void);
|
|
extern u64_t _get_elapsed_clock_time(void);
|
|
#endif
|
|
|
|
extern int sys_clock_device_ctrl(struct device *device,
|
|
u32_t ctrl_command, void *context);
|
|
|
|
/*
|
|
* Currently regarding timers, only loapic timer and arcv2_timer0 implements
|
|
* device pm functionality. For other timers, use default handler in case
|
|
* the app enables CONFIG_DEVICE_POWER_MANAGEMENT.
|
|
*/
|
|
#if !defined(CONFIG_LOAPIC_TIMER) && !defined(CONFIG_ARCV2_TIMER)
|
|
#define sys_clock_device_ctrl device_pm_control_nop
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ZEPHYR_INCLUDE_DRIVERS_SYSTEM_TIMER_H_ */
|