40 lines
552 B
C
40 lines
552 B
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2010
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* Texas Instruments, <www.ti.com>
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* Aneesh V <aneesh@ti.com>
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*/
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#ifndef _UTILS_H_
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#define _UTILS_H_
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static inline s32 log_2_n_round_up(u32 n)
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{
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s32 log2n = -1;
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u32 temp = n;
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while (temp) {
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log2n++;
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temp >>= 1;
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}
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if (n & (n - 1))
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return log2n + 1; /* not power of 2 - round up */
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else
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return log2n; /* power of 2 */
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}
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static inline s32 log_2_n_round_down(u32 n)
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{
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s32 log2n = -1;
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u32 temp = n;
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while (temp) {
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log2n++;
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temp >>= 1;
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}
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return log2n;
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}
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#endif
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