66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* SPDX-License-Identifier: Apache-2.0 */
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/*
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* Copyright (c) 2023 Intel Corporation
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*
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* Author: Adrian Warecki <adrian.warecki@intel.com>
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*/
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#ifndef ZEPHYR_DRIVERS_WATCHDOG_WDT_DW_COMMON_H_
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#define ZEPHYR_DRIVERS_WATCHDOG_WDT_DW_COMMON_H_
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#include <stdint.h>
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/**
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* @brief Check watchdog configuration options
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*
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* Check options value passed to a watchdog setup function. Returns error if unsupported option
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* is used.
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*
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* @param options options value passed to a watchdog setup function.
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* @return Error code, 0 on success.
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*/
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int dw_wdt_check_options(const uint8_t options);
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/**
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* @brief Configure watchdog device
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*
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* @param base Device base address.
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* @param config device configuration word
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* @return Error code, 0 on success.
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*/
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int dw_wdt_configure(const uint32_t base, const uint32_t config);
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/**
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* @brief Calculate period
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*
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* @param [in]base Device base address.
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* @param [in]clk_freq frequency of a clock used by watchdog device
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* @param [in]config pointer to a watchdog configuration structure
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* @param [out]period_out pointer to a variable in which the period configuration word will be
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* placed
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* @return Error code, 0 on success.
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*/
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int dw_wdt_calc_period(const uint32_t base, const uint32_t clk_freq,
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const struct wdt_timeout_cfg *config, uint32_t *period_out);
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/**
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* @brief Watchdog probe
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*
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* Checks device id register and configure a reset pulse length.
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*
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* @param base Device base address.
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* @param reset_pulse_length Length of a reset pulse produced by watchdog
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* @return Error code, 0 on success.
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*/
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int dw_wdt_probe(const uint32_t base, const uint32_t reset_pulse_length);
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/**
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* @brief Watchdog disable function
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*
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* @param dev Device structure.
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* @return -ENOTSUP. The hardware does not support disabling.
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*/
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int dw_wdt_disable(const struct device *dev);
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#endif /* ZEPHYR_DRIVERS_WATCHDOG_WDT_DW_COMMON_H_ */
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