| /* 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 |
