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author | David S. Miller <davem@davemloft.net> | 2015-06-03 23:44:57 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2015-06-03 23:44:57 -0700 |
commit | 9d1dabfbd0760269475a0cbbcc568505aa3ada60 (patch) | |
tree | 213ac17d317dc4039e3aa38cab06852b6d6dfa9e /drivers/net/wireless/mediatek/mt7601u/util.h | |
parent | 22793e5d5f65b45e95492a08e0019fd669752607 (diff) | |
parent | 1690faef645ea8725fafdfe6451cf7828a676ad8 (diff) | |
download | op-kernel-dev-9d1dabfbd0760269475a0cbbcc568505aa3ada60.zip op-kernel-dev-9d1dabfbd0760269475a0cbbcc568505aa3ada60.tar.gz |
Merge tag 'wireless-drivers-next-for-davem-2015-06-03' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
new driver mt7601u for MediaTek Wi-Fi devices MT7601U
ath10k:
* qca6174 power consumption improvements, enable ASPM etc (Michal)
wil6210:
* support Wi-Fi Simple Configuration in STA mode
iwlwifi:
* a few fixes (re-enablement of interrupts for certain new
platforms that have special power states)
* Rework completely the RBD allocation model towards new
multi RX hardware.
* cleanups
* scan reworks continuation (Luca)
mwifiex:
* improve firmware debug functionality
rtlwifi:
* update regulatory database
brcmfmac:
* cleanup and new feature support in PCIe code
* alternative nvram loading for router support
====================
Conflicts:
drivers/net/wireless/iwlwifi/Kconfig
Trivial conflict in iwlwifi Kconfig, two commits adding
the same two chip numbers to the help text, but order
transposed.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt7601u/util.h')
-rw-r--r-- | drivers/net/wireless/mediatek/mt7601u/util.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt7601u/util.h b/drivers/net/wireless/mediatek/mt7601u/util.h new file mode 100644 index 0000000..b89140b --- /dev/null +++ b/drivers/net/wireless/mediatek/mt7601u/util.h @@ -0,0 +1,77 @@ +/* + * 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 |