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