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ath5k: Use correct clock when setting ofdm timings

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* Use correct clock value when setting OFDM timings on
 non-default bwmodes.

 Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nick Kossifidis 2010-11-23 21:48:32 +02:00 committed by John W. Linville
parent 3bb1765460
commit 73a06a6834
1 changed files with 14 additions and 2 deletions
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16
drivers/net/wireless/ath/ath5k/phy.c
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@ -228,8 +228,20 @@ static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
* ALGO: coef = (5 * clock / carrier_freq) / 2
* we scale coef by shifting clock value by 24 for
* better precision since we use integers */
/* TODO: Half/quarter rate */
clock = (channel->hw_value & CHANNEL_TURBO) ? 80 : 40;
switch (ah->ah_bwmode) {
case AR5K_BWMODE_40MHZ:
clock = 40 * 2;
break;
case AR5K_BWMODE_10MHZ:
clock = 40 / 2;
break;
case AR5K_BWMODE_5MHZ:
clock = 40 / 4;
break;
default:
clock = 40;
break;
}
coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;
/* Get exponent