From: Zefir Kurtisi Date: Wed, 31 Oct 2012 11:23:01 +0000 (+0100) Subject: ath9k: [DFS] add pulse width tolerance for ETSI X-Git-Tag: v3.8-rc1~139^2~174^2^2~80 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=a6952287942a13831502838d47e268d05c21c48f;p=linux.git ath9k: [DFS] add pulse width tolerance for ETSI Add 5% width tolerance for radar patterns defined by ETSI. Signed-off-by: Zefir Kurtisi Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/dfs_pattern_detector.c b/drivers/net/wireless/ath/ath9k/dfs_pattern_detector.c index 3b129143653f..24877b00cbf4 100644 --- a/drivers/net/wireless/ath/ath9k/dfs_pattern_detector.c +++ b/drivers/net/wireless/ath/ath9k/dfs_pattern_detector.c @@ -42,10 +42,15 @@ struct radar_types { #define MIN_PPB_THRESH 50 #define PPB_THRESH(PPB) ((PPB * MIN_PPB_THRESH + 50) / 100) #define PRF2PRI(PRF) ((1000000 + PRF / 2) / PRF) +/* percentage of pulse width tolerance */ +#define WIDTH_TOLERANCE 5 +#define WIDTH_LOWER(X) ((X*(100-WIDTH_TOLERANCE)+50)/100) +#define WIDTH_UPPER(X) ((X*(100+WIDTH_TOLERANCE)+50)/100) #define ETSI_PATTERN(ID, WMIN, WMAX, PMIN, PMAX, PRF, PPB) \ { \ - ID, WMIN, WMAX, (PRF2PRI(PMAX) - PRI_TOLERANCE), \ + ID, WIDTH_LOWER(WMIN), WIDTH_UPPER(WMAX), \ + (PRF2PRI(PMAX) - PRI_TOLERANCE), \ (PRF2PRI(PMIN) * PRF + PRI_TOLERANCE), PRF, PPB * PRF, \ PPB_THRESH(PPB), PRI_TOLERANCE, \ }