CLOCK_RATE
static const uint8_t CLOCK_RATE[] = { 40, 80, 22, 44, 88 };
clks = usecs * CLOCK_RATE[ath_hal_chan2wmode(ah, c)];
clks = usecs * CLOCK_RATE[WIRELESS_MODE_11b];
psec = (clks * 1000000ULL) / CLOCK_RATE[ath_hal_chan2wmode(ah, c)];
psec = (clks * 1000000ULL) / CLOCK_RATE[WIRELESS_MODE_11b];
listenTime = (ccdelta - rfdelta - tfdelta) / CLOCK_RATE;
listenTime = (ccdelta - rfdelta - tfdelta) / CLOCK_RATE;