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Nanokernel timer uses new driver initialization

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Update nanokernel systems to use the new driver initialization model on the
timer driver.

Change-Id: I22d8619f56052f094482d73ab34c9d610492d8c0
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
This commit is contained in:
Peter Mitsis 2015-07-06 16:20:19 -04:00 • committed by Anas Nashif
commit 27e01a060a
3 changed files with 50 additions and 16 deletions
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2
drivers/timer/Makefile
View file

@ -9,3 +9,5 @@ obj-$(CONFIG_ARCV2_TIMER) += arcv2_timer0.o
_CORTEX_M_TIMER_AND_GDB_INFO_yy = y
obj-$(CONFIG_CORTEX_M_TIMER) += cortex_m_timer.o
obj-$(_CORTEX_M_TIMER_AND_GDB_INFO_$(CONFIG_CORTEX_M_TIMER)$(CONFIG_GDB_INFO)) += cortex_m_timer_gdb.o
obj-$(CONFIG_SYS_CLOCK_EXISTS) += sys_clock_init.o

48
drivers/timer/sys_clock_init.c Normal file
View file

@ -0,0 +1,48 @@
/* initialize system clock driver */
/*
* Copyright (c) 2015 Wind River Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2) Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3) Neither the name of Wind River Systems nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
DESCRIPTION
Initializing the timer driver is done in this module to reduce code duplication.
*/
#include <nanokernel.h>
#include <init.h>
#include <drivers/system_timer.h>
#ifdef CONFIG_NANOKERNEL
DECLARE_DEVICE_INIT_CONFIG(sys_clock, "sys_clock",
_sys_clock_driver_init, NULL);
pure_init(sys_clock, NULL);
#endif

16
kernel/nanokernel/nano_sys_clock.c
View file

@ -52,22 +52,6 @@ int sys_clock_hw_cycles_per_tick;
/* updated by timer driver for tickless, stays at 1 for non-tickless */
uint32_t _sys_idle_elapsed_ticks = 1;
/**
*
* @brief Constructor that initializes nanokernel time tracking system
*
* @return N/A
*
*/
void nano_time_init(void)
{
_sys_clock_driver_init(NULL);
}
SYS_PREKERNEL_INIT(nano_time_init, 250);
#endif /* CONFIG_NANOKERNEL */
int64_t _nano_ticks = 0;