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path: root/drivers/net/wireless/ath/ath5k/phy.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath5k/phy.c')
-rw-r--r--drivers/net/wireless/ath/ath5k/phy.c45
1 files changed, 34 insertions, 11 deletions
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 8b71a2d947e0..ab363f34b4df 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -1975,11 +1975,13 @@ ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah,
spur_delta_phase = (spur_offset << 18) / 25;
spur_freq_sigma_delta = (spur_delta_phase >> 10);
symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 2;
+ break;
case AR5K_BWMODE_5MHZ:
/* Both sample_freq and chip_freq are 10MHz (?) */
spur_delta_phase = (spur_offset << 19) / 25;
spur_freq_sigma_delta = (spur_delta_phase >> 10);
symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 4;
+ break;
default:
if (channel->band == IEEE80211_BAND_5GHZ) {
/* Both sample_freq and chip_freq are 40MHz */
@@ -3516,6 +3518,7 @@ ath5k_setup_rate_powertable(struct ath5k_hw *ah, u16 max_pwr,
{
unsigned int i;
u16 *rates;
+ s16 rate_idx_scaled = 0;
/* max_pwr is power level we got from driver/user in 0.5dB
* units, switch to 0.25dB units so we can compare */
@@ -3562,20 +3565,32 @@ ath5k_setup_rate_powertable(struct ath5k_hw *ah, u16 max_pwr,
for (i = 8; i <= 15; i++)
rates[i] -= ah->ah_txpower.txp_cck_ofdm_gainf_delta;
+ /* Save min/max and current tx power for this channel
+ * in 0.25dB units.
+ *
+ * Note: We use rates[0] for current tx power because
+ * it covers most of the rates, in most cases. It's our
+ * tx power limit and what the user expects to see. */
+ ah->ah_txpower.txp_min_pwr = 2 * rates[7];
+ ah->ah_txpower.txp_cur_pwr = 2 * rates[0];
+
+ /* Set max txpower for correct OFDM operation on all rates
+ * -that is the txpower for 54Mbit-, it's used for the PAPD
+ * gain probe and it's in 0.5dB units */
+ ah->ah_txpower.txp_ofdm = rates[7];
+
/* Now that we have all rates setup use table offset to
* match the power range set by user with the power indices
* on PCDAC/PDADC table */
for (i = 0; i < 16; i++) {
- rates[i] += ah->ah_txpower.txp_offset;
+ rate_idx_scaled = rates[i] + ah->ah_txpower.txp_offset;
/* Don't get out of bounds */
- if (rates[i] > 63)
- rates[i] = 63;
+ if (rate_idx_scaled > 63)
+ rate_idx_scaled = 63;
+ if (rate_idx_scaled < 0)
+ rate_idx_scaled = 0;
+ rates[i] = rate_idx_scaled;
}
-
- /* Min/max in 0.25dB units */
- ah->ah_txpower.txp_min_pwr = 2 * rates[7];
- ah->ah_txpower.txp_cur_pwr = 2 * rates[0];
- ah->ah_txpower.txp_ofdm = rates[7];
}
@@ -3639,10 +3654,17 @@ ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
if (!ah->ah_txpower.txp_setup ||
(channel->hw_value != curr_channel->hw_value) ||
(channel->center_freq != curr_channel->center_freq)) {
- /* Reset TX power values */
+ /* Reset TX power values but preserve requested
+ * tx power from above */
+ int requested_txpower = ah->ah_txpower.txp_requested;
+
memset(&ah->ah_txpower, 0, sizeof(ah->ah_txpower));
+
+ /* Restore TPC setting and requested tx power */
ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
+ ah->ah_txpower.txp_requested = requested_txpower;
+
/* Calculate the powertable */
ret = ath5k_setup_channel_powertable(ah, channel,
ee_mode, type);
@@ -3789,8 +3811,9 @@ ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
* RF buffer settings on 5211/5212+ so that we
* properly set curve indices.
*/
- ret = ath5k_hw_txpower(ah, channel, ah->ah_txpower.txp_cur_pwr ?
- ah->ah_txpower.txp_cur_pwr / 2 : AR5K_TUNE_MAX_TXPOWER);
+ ret = ath5k_hw_txpower(ah, channel, ah->ah_txpower.txp_requested ?
+ ah->ah_txpower.txp_requested * 2 :
+ AR5K_TUNE_MAX_TXPOWER);
if (ret)
return ret;