blob: 1ce2d82cf074bbd313d6977866dafa949411d6a6 [file] [log] [blame] [edit]
/*
* Copyright (c) 2022 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/counter.h>
#include <zephyr/kernel.h>
#include <soc.h>
#include <counter/counter_ace_v1x_rtc_regs.h>
static int counter_ace_v1x_rtc_get_value(const struct device *dev,
uint64_t *value)
{
ARG_UNUSED(dev);
uint32_t hi0, lo, hi1;
do {
hi0 = sys_read32(ACE_RTCWC_HI);
lo = sys_read32(ACE_RTCWC_LO);
hi1 = sys_read32(ACE_RTCWC_HI);
} while (hi0 != hi1);
*value = (((uint64_t)hi0) << 32) | lo;
return 0;
}
int counter_ace_v1x_rtc_init(const struct device *dev)
{
ARG_UNUSED(dev);
return 0;
}
static const struct counter_driver_api ace_v1x_rtc_counter_apis = {
.get_value_64 = counter_ace_v1x_rtc_get_value
};
DEVICE_DT_DEFINE(DT_NODELABEL(ace_rtc_counter), counter_ace_v1x_rtc_init, NULL, NULL, NULL,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,
&ace_v1x_rtc_counter_apis);