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ath5k: Skip powertable setting when we are on the same channel

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* Only set power table if we are changing channel/mode
 there is no need to recalculate and reset the power table
 all the time.

 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 21:37:30 +02:00 committed by John W. Linville
parent f08fbf6cf4
commit 4c57581d93
1 changed files with 42 additions and 23 deletions
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65
drivers/net/wireless/ath/ath5k/phy.c
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@ -3090,7 +3090,7 @@ ath5k_setup_rate_powertable(struct ath5k_hw *ah, u16 max_pwr,
*/
static int
ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
u8 ee_mode, u8 txpower)
u8 ee_mode, u8 txpower, bool fast)
{
struct ath5k_rate_pcal_info rate_info;
u8 type;
@ -3126,10 +3126,15 @@ ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
return -EINVAL;
}
/* FIXME: Only on channel/mode change */
ret = ath5k_setup_channel_powertable(ah, channel, ee_mode, type);
if (ret)
return ret;
/* If fast is set it means we are on the same channel/mode
* so there is no need to recalculate the powertable, we 'll
* just use the cached one */
if (!fast) {
ret = ath5k_setup_channel_powertable(ah, channel,
ee_mode, type);
if (ret)
return ret;
}
/* Limit max power if we have a CTL available */
ath5k_get_max_ctl_power(ah, channel);
@ -3210,7 +3215,7 @@ int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower)
ATH5K_DBG(ah->ah_sc, ATH5K_DEBUG_TXPOWER,
"changing txpower to %d\n", txpower);
return ath5k_hw_txpower(ah, channel, ee_mode, txpower);
return ath5k_hw_txpower(ah, channel, ee_mode, txpower, true);
}
/*************\
@ -3220,13 +3225,42 @@ int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower)
int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
u8 mode, u8 ee_mode, u8 freq)
{
struct ieee80211_channel *curr_channel;
int ret, i;
u32 phy_tst1;
bool fast_txp;
ret = 0;
/*
* 5211/5212 Specific
* If we don't change channel/mode skip
* tx powertable calculation and use the
* cached one.
*/
curr_channel = ah->ah_current_channel;
if ((channel->hw_value == curr_channel->hw_value) &&
(channel->center_freq == curr_channel->center_freq))
fast_txp = true;
else
fast_txp = false;
/*
* Set TX power
*
* Note: We need to do that before we set
* RF buffer settings on 5211/5212+ so that we
* properly set curve indices.
*/
ret = ath5k_hw_txpower(ah, channel, ee_mode,
ah->ah_txpower.txp_max_pwr / 2,
fast_txp);
if (ret)
return ret;
/*
* For 5210 we do all initialization using
* initvals, so we don't have to modify
* any settings (5210 also only supports
* a/aturbo modes)
*/
if (ah->ah_version != AR5K_AR5210) {
@ -3240,14 +3274,6 @@ int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
mdelay(1);
/*
* Set TX power
*/
ret = ath5k_hw_txpower(ah, channel, ee_mode,
ah->ah_txpower.txp_max_pwr / 2);
if (ret)
return ret;
/*
* Write RF buffer
*/
@ -3255,7 +3281,6 @@ int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
if (ret)
return ret;
/* Write OFDM timings on 5212*/
if (ah->ah_version == AR5K_AR5212 &&
channel->hw_value & CHANNEL_OFDM) {
@ -3284,12 +3309,6 @@ int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
}
} else {
/*
* For 5210 we do all initialization using
* initvals, so we don't have to modify
* any settings (5210 also only supports
* a/aturbo modes)
*/
mdelay(1);
/* Disable phy and wait */
ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);