76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
/**
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* @file sdrv_ckgen_common.h
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* @brief taishan ckgen common header file.
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*
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* @copyright Copyright (c) 2022 Semidrive Semiconductor.
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* All rights reserved.
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*/
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#ifndef SDRV_CKGEN_COMMON_H_
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#define SDRV_CKGEN_COMMON_H_
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#include <reg.h>
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#include <udelay/udelay.h>
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#ifndef DIV_ROUND_UP
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1u) / (d))
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#endif
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#ifndef DIV_ROUND_CLOSEST
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#define DIV_ROUND_CLOSEST(n, d) (((n) + (d)/2) / (d))
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#endif
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#ifndef ABS
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#define ABS(x) (((int)(x) < 0) ? -(int)(x) : (int)(x))
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#endif
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#ifndef BIT
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#define BIT(x, bit) ((x) & (1UL << (bit)))
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#endif
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/**
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* @brief Wait register specific bit to expect value until timeout.
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*
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* This function busy read register value, if specific bit equal to expect value,
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* it will return true. Otherwise, after timeout, return false.
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*
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* @param base register address
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* @param offset register bit offset.
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* @param val expect value, 1 or 0.
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* @param count busy loop count.
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* @return true represents bit in register equal to expect value, false represents timeout.
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*/
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static inline bool sdrv_ckgen_wait(uint32_t base, uint32_t offset,
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uint32_t val, uint32_t count)
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{
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volatile uint32_t times_out = count;
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while ((times_out != 0u) &&
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(val != ((readl(base) & ((uint32_t)1u << offset)) >> offset))) {
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times_out--;
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}
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return times_out > 0u ? true : false;
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}
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static inline bool sdrv_ckgen_wait_timeout(uint32_t base, uint32_t offset,
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uint32_t val, uint32_t timeout_us)
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{
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volatile uint32_t count;
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uint32_t interval = 10U;
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count = timeout_us / interval;
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while (1) {
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if ((val == ((readl(base) & ((uint32_t)1u << offset)) >> offset)) || (!count)) {
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break;
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}
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udelay(interval);
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count--;
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}
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return (val == ((readl(base) & ((uint32_t)1u << offset)) >> offset)) || (count > 0U);
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}
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#endif
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