From edee1668bb1b7d977f39c34f63916b82647f024a Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Sun, 3 Mar 2013 12:45:27 +0100 Subject: [PATCH] brcmutil: add macros for setting bitfields using mask/shift operations Added inline functions to set bitfields in an unsigned integer variable. Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- .../net/wireless/brcm80211/include/brcmu_utils.h | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/net/wireless/brcm80211/include/brcmu_utils.h b/drivers/net/wireless/brcm80211/include/brcmu_utils.h index 477b92a..82fcfe8 100644 --- a/drivers/net/wireless/brcm80211/include/brcmu_utils.h +++ b/drivers/net/wireless/brcm80211/include/brcmu_utils.h @@ -173,6 +173,29 @@ extern void brcmu_pktq_flush(struct pktq *pq, bool dir, /* ip address */ struct ipv4_addr; +/* + * bitfield macros using masking and shift + * + * remark: the mask parameter should be a shifted mask. + */ +static inline void brcmu_maskset32(u32 *var, u32 mask, u8 shift, u32 value) +{ + value = (value << shift) & mask; + *var = (*var & ~mask) | value; +} +static inline u32 brcmu_maskget32(u32 var, u32 mask, u8 shift) +{ + return (var & mask) >> shift; +} +static inline void brcmu_maskset16(u16 *var, u16 mask, u8 shift, u16 value) +{ + value = (value << shift) & mask; + *var = (*var & ~mask) | value; +} +static inline u16 brcmu_maskget16(u16 var, u16 mask, u8 shift) +{ + return (var & mask) >> shift; +} /* externs */ /* format/print */ -- 2.7.4