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44 lines
968 B
44 lines
968 B
/* |
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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 DEVICE_API(counter, 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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