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ath9k: remove ath9k_hw_chan2wmode()

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The only left users are for timing for ACK timeout, slotime and
CTS timeout. We currently use an array CLOCK_RATE to keep
these values per mode and since as only will use A and G
we can depend on the band to get the appropriate values.

We note that we should be using a different clock rate value
for CCK, we can do this in separate patch, currently this is
being disregarded and should only affect when we want to
change the default ACK/CTS timeout or slot time and stuck
with using using 802.11b.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez 2008-12-23 15:58:48 -08:00 committed by John W. Linville
parent e56db71846
commit 4febf7b8f4
1 changed files with 19 additions and 27 deletions
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46
drivers/net/wireless/ath9k/hw.c
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@ -23,7 +23,9 @@
#include "phy.h"
#include "initvals.h"
static const u8 CLOCK_RATE[] = { 40, 80, 22, 44, 88, 40 };
#define ATH9K_CLOCK_RATE_CCK 22
#define ATH9K_CLOCK_RATE_5GHZ_OFDM 40
#define ATH9K_CLOCK_RATE_2GHZ_OFDM 44
extern struct hal_percal_data iq_cal_multi_sample;
extern struct hal_percal_data iq_cal_single_sample;
@ -48,17 +50,18 @@ static void ath9k_hw_spur_mitigate(struct ath_hal *ah, struct ath9k_channel *cha
static u32 ath9k_hw_mac_usec(struct ath_hal *ah, u32 clks)
{
if (ah->ah_curchan != NULL)
return clks / CLOCK_RATE[ath9k_hw_chan2wmode(ah, ah->ah_curchan)];
else
return clks / CLOCK_RATE[ATH9K_MODE_11B];
struct ieee80211_conf *conf = &ah->ah_sc->hw->conf;
if (!ah->ah_curchan) /* should really check for CCK instead */
return clks / ATH9K_CLOCK_RATE_CCK;
if (conf->channel->band == IEEE80211_BAND_2GHZ)
return clks / ATH9K_CLOCK_RATE_2GHZ_OFDM;
return clks / ATH9K_CLOCK_RATE_5GHZ_OFDM;
}
static u32 ath9k_hw_mac_to_usec(struct ath_hal *ah, u32 clks)
{
struct ath9k_channel *chan = ah->ah_curchan;
if (chan && IS_CHAN_HT40(chan))
struct ieee80211_conf *conf = &ah->ah_sc->hw->conf;
if (conf_is_ht40(conf))
return ath9k_hw_mac_usec(ah, clks) / 2;
else
return ath9k_hw_mac_usec(ah, clks);
@ -66,34 +69,23 @@ static u32 ath9k_hw_mac_to_usec(struct ath_hal *ah, u32 clks)
static u32 ath9k_hw_mac_clks(struct ath_hal *ah, u32 usecs)
{
if (ah->ah_curchan != NULL)
return usecs * CLOCK_RATE[ath9k_hw_chan2wmode(ah,
ah->ah_curchan)];
else
return usecs * CLOCK_RATE[ATH9K_MODE_11B];
struct ieee80211_conf *conf = &ah->ah_sc->hw->conf;
if (!ah->ah_curchan) /* should really check for CCK instead */
return usecs *ATH9K_CLOCK_RATE_CCK;
if (conf->channel->band == IEEE80211_BAND_2GHZ)
return usecs *ATH9K_CLOCK_RATE_2GHZ_OFDM;
return usecs *ATH9K_CLOCK_RATE_5GHZ_OFDM;
}
static u32 ath9k_hw_mac_to_clks(struct ath_hal *ah, u32 usecs)
{
struct ath9k_channel *chan = ah->ah_curchan;
if (chan && IS_CHAN_HT40(chan))
struct ieee80211_conf *conf = &ah->ah_sc->hw->conf;
if (conf_is_ht40(conf))
return ath9k_hw_mac_clks(ah, usecs) * 2;
else
return ath9k_hw_mac_clks(ah, usecs);
}
enum wireless_mode ath9k_hw_chan2wmode(struct ath_hal *ah,
const struct ath9k_channel *chan)
{
if (IS_CHAN_B(chan))
return ATH9K_MODE_11B;
if (IS_CHAN_G(chan))
return ATH9K_MODE_11G;
return ATH9K_MODE_11A;
}
bool ath9k_hw_wait(struct ath_hal *ah, u32 reg, u32 mask, u32 val)
{
int i;