diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt7601u/util.h')
-rw-r--r-- | drivers/net/wireless/mediatek/mt7601u/util.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/drivers/net/wireless/mediatek/mt7601u/util.h b/drivers/net/wireless/mediatek/mt7601u/util.h deleted file mode 100644 index b89140bf1210..000000000000 --- a/drivers/net/wireless/mediatek/mt7601u/util.h +++ /dev/null @@ -1,77 +0,0 @@ -/* - * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org> - * Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __MT76_UTIL_H -#define __MT76_UTIL_H - -/* - * Power of two check, this will check - * if the mask that has been given contains and contiguous set of bits. - * Note that we cannot use the is_power_of_2() function since this - * check must be done at compile-time. - */ -#define is_power_of_two(x) ( !((x) & ((x)-1)) ) -#define low_bit_mask(x) ( ((x)-1) & ~(x) ) -#define is_valid_mask(x) is_power_of_two(1LU + (x) + low_bit_mask(x)) - -/* - * Macros to find first set bit in a variable. - * These macros behave the same as the __ffs() functions but - * the most important difference that this is done during - * compile-time rather then run-time. - */ -#define compile_ffs2(__x) \ - __builtin_choose_expr(((__x) & 0x1), 0, 1) - -#define compile_ffs4(__x) \ - __builtin_choose_expr(((__x) & 0x3), \ - (compile_ffs2((__x))), \ - (compile_ffs2((__x) >> 2) + 2)) - -#define compile_ffs8(__x) \ - __builtin_choose_expr(((__x) & 0xf), \ - (compile_ffs4((__x))), \ - (compile_ffs4((__x) >> 4) + 4)) - -#define compile_ffs16(__x) \ - __builtin_choose_expr(((__x) & 0xff), \ - (compile_ffs8((__x))), \ - (compile_ffs8((__x) >> 8) + 8)) - -#define compile_ffs32(__x) \ - __builtin_choose_expr(((__x) & 0xffff), \ - (compile_ffs16((__x))), \ - (compile_ffs16((__x) >> 16) + 16)) - -/* - * This macro will check the requirements for the FIELD{8,16,32} macros - * The mask should be a constant non-zero contiguous set of bits which - * does not exceed the given typelimit. - */ -#define FIELD_CHECK(__mask) \ - BUILD_BUG_ON(!(__mask) || !is_valid_mask(__mask)) - -#define MT76_SET(_mask, _val) \ - ({ \ - FIELD_CHECK(_mask); \ - (((u32) (_val)) << compile_ffs32(_mask)) & _mask; \ - }) - -#define MT76_GET(_mask, _val) \ - ({ \ - FIELD_CHECK(_mask); \ - (u32) (((_val) & _mask) >> compile_ffs32(_mask)); \ - }) - -#endif |