f8fc109960
repo: https://github.com/u-boot/u-boot commit: d80bb749fab53da72c4a0e09b8c2d2aaa3103c91 Change-Id: Ie6434426e1ec15bc08bb1832798e371f3fd5fb29
40 lines
552 B
C
40 lines
552 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2010
|
|
* Texas Instruments, <www.ti.com>
|
|
* Aneesh V <aneesh@ti.com>
|
|
*/
|
|
#ifndef _UTILS_H_
|
|
#define _UTILS_H_
|
|
|
|
static inline s32 log_2_n_round_up(u32 n)
|
|
{
|
|
s32 log2n = -1;
|
|
u32 temp = n;
|
|
|
|
while (temp) {
|
|
log2n++;
|
|
temp >>= 1;
|
|
}
|
|
|
|
if (n & (n - 1))
|
|
return log2n + 1; /* not power of 2 - round up */
|
|
else
|
|
return log2n; /* power of 2 */
|
|
}
|
|
|
|
static inline s32 log_2_n_round_down(u32 n)
|
|
{
|
|
s32 log2n = -1;
|
|
u32 temp = n;
|
|
|
|
while (temp) {
|
|
log2n++;
|
|
temp >>= 1;
|
|
}
|
|
|
|
return log2n;
|
|
}
|
|
|
|
#endif
|