mirror of https://github.com/hak5/openwrt.git
ath9k: fix a few issues with pa predistortion on ar9003
SVN-Revision: 24504lede-17.01
Felix Fietkau
parent
9eba6dc5ea
commit
5fa415d366
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@ -0,0 +1,122 @@
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -320,6 +320,42 @@ static void ath_paprd_activate(struct at
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ath9k_ps_restore(sc);
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}
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+static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
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+{
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+ struct ieee80211_hw *hw = sc->hw;
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+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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+ struct ath_tx_control txctl;
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+ int time_left;
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+
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+ memset(&txctl, 0, sizeof(txctl));
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+ txctl.txq = sc->tx.txq_map[WME_AC_BE];
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+
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+ memset(tx_info, 0, sizeof(*tx_info));
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+ tx_info->band = hw->conf.channel->band;
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+ tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
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+ tx_info->control.rates[0].idx = 0;
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+ tx_info->control.rates[0].count = 1;
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+ tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
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+ tx_info->control.rates[1].idx = -1;
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+
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+ init_completion(&sc->paprd_complete);
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+ sc->paprd_pending = true;
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+ txctl.paprd = BIT(chain);
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+ if (ath_tx_start(hw, skb, &txctl) != 0)
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+ return false;
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+
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+ time_left = wait_for_completion_timeout(&sc->paprd_complete,
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+ msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
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+ sc->paprd_pending = false;
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+
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+ if (!time_left)
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+ ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CALIBRATE,
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+ "Timeout waiting for paprd training on TX chain %d\n",
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+ chain);
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+
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+ return !!time_left;
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+}
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+
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void ath_paprd_calibrate(struct work_struct *work)
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{
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struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
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@@ -327,18 +363,12 @@ void ath_paprd_calibrate(struct work_str
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struct ath_hw *ah = sc->sc_ah;
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struct ieee80211_hdr *hdr;
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struct sk_buff *skb = NULL;
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- struct ieee80211_tx_info *tx_info;
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- int band = hw->conf.channel->band;
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- struct ieee80211_supported_band *sband = &sc->sbands[band];
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- struct ath_tx_control txctl;
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struct ath9k_hw_cal_data *caldata = ah->caldata;
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struct ath_common *common = ath9k_hw_common(ah);
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int ftype;
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int chain_ok = 0;
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int chain;
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int len = 1800;
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- int time_left;
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- int i;
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if (!caldata)
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return;
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@@ -347,8 +377,6 @@ void ath_paprd_calibrate(struct work_str
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if (!skb)
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return;
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- tx_info = IEEE80211_SKB_CB(skb);
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-
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skb_put(skb, len);
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memset(skb->data, 0, len);
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hdr = (struct ieee80211_hdr *)skb->data;
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@@ -359,9 +387,6 @@ void ath_paprd_calibrate(struct work_str
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memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
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memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
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- memset(&txctl, 0, sizeof(txctl));
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- txctl.txq = sc->tx.txq_map[WME_AC_BE];
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-
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ath9k_ps_wakeup(sc);
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ar9003_paprd_init_table(ah);
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for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
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@@ -369,30 +394,19 @@ void ath_paprd_calibrate(struct work_str
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continue;
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chain_ok = 0;
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- memset(tx_info, 0, sizeof(*tx_info));
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- tx_info->band = band;
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- for (i = 0; i < 4; i++) {
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- tx_info->control.rates[i].idx = sband->n_bitrates - 1;
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- tx_info->control.rates[i].count = 6;
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- }
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+ ath_dbg(common, ATH_DBG_CALIBRATE,
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+ "Sending PAPRD frame for thermal measurement "
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+ "on chain %d\n", chain);
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+ if (!ath_paprd_send_frame(sc, skb, chain))
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+ goto fail_paprd;
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- init_completion(&sc->paprd_complete);
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- sc->paprd_pending = true;
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ar9003_paprd_setup_gain_table(ah, chain);
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- txctl.paprd = BIT(chain);
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- if (ath_tx_start(hw, skb, &txctl) != 0)
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- break;
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- time_left = wait_for_completion_timeout(&sc->paprd_complete,
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- msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
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- sc->paprd_pending = false;
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- if (!time_left) {
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- ath_dbg(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
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- "Timeout waiting for paprd training on TX chain %d\n",
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- chain);
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+ ath_dbg(common, ATH_DBG_CALIBRATE,
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+ "Sending PAPRD training frame on chain %d\n", chain);
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+ if (!ath_paprd_send_frame(sc, skb, chain))
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goto fail_paprd;
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- }
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if (!ar9003_paprd_is_done(ah))
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break;
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@ -0,0 +1,28 @@
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--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h
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+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h
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@@ -31,6 +31,12 @@
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#define AR9300_ANT_16S 25
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#define AR9300_FUTURE_MODAL_SZ 6
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+#define AR9300_PAPRD_RATE_MASK 0x01ffffff
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+#define AR9300_PAPRD_SCALE_1 0x0e000000
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+#define AR9300_PAPRD_SCALE_1_S 25
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+#define AR9300_PAPRD_SCALE_2 0x70000000
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+#define AR9300_PAPRD_SCALE_2_S 28
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+
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/* Delta from which to start power to pdadc table */
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/* This offset is used in both open loop and closed loop power control
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* schemes. In open loop power control, it is not really needed, but for
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--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
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+++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
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@@ -52,8 +52,8 @@ static void ar9003_paprd_setup_single_ta
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else
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hdr = &eep->modalHeader2G;
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- am_mask = le32_to_cpu(hdr->papdRateMaskHt20);
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- ht40_mask = le32_to_cpu(hdr->papdRateMaskHt40);
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+ am_mask = le32_to_cpu(hdr->papdRateMaskHt20) & AR9300_PAPRD_RATE_MASK;
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+ ht40_mask = le32_to_cpu(hdr->papdRateMaskHt40) & AR9300_PAPRD_RATE_MASK;
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REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK, am_mask);
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REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK, am_mask);
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@ -0,0 +1,225 @@
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--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
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+++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
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@@ -30,9 +30,66 @@ void ar9003_paprd_enable(struct ath_hw *
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}
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EXPORT_SYMBOL(ar9003_paprd_enable);
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-static void ar9003_paprd_setup_single_table(struct ath_hw *ah)
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+static int ar9003_get_training_power_2g(struct ath_hw *ah)
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{
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struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
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+ struct ar9300_modal_eep_header *hdr = &eep->modalHeader2G;
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+ unsigned int power, scale, delta;
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+
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+ scale = MS(hdr->papdRateMaskHt20, AR9300_PAPRD_SCALE_1);
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+ power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5,
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+ AR_PHY_POWERTX_RATE5_POWERTXHT20_0);
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+
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+ delta = abs((int) ah->paprd_target_power - (int) power);
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+ if (delta > scale)
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+ return -1;
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+
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+ if (delta < 4)
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+ power -= 4 - delta;
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+
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+ return power;
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+}
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+
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+static int get_streams(int mask)
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+{
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+ return !!(mask & BIT(0)) + !!(mask & BIT(1)) + !!(mask & BIT(2));
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+}
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+
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+static int ar9003_get_training_power_5g(struct ath_hw *ah)
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+{
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+ struct ath_common *common = ath9k_hw_common(ah);
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+ struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
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+ struct ar9300_modal_eep_header *hdr = &eep->modalHeader5G;
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+ struct ath9k_channel *chan = ah->curchan;
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+ unsigned int power, scale, delta;
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+
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+ if (chan->channel >= 5700)
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+ scale = MS(hdr->papdRateMaskHt20, AR9300_PAPRD_SCALE_1);
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+ else if (chan->channel >= 5400)
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+ scale = MS(hdr->papdRateMaskHt40, AR9300_PAPRD_SCALE_2);
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+ else
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+ scale = MS(hdr->papdRateMaskHt40, AR9300_PAPRD_SCALE_1);
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+
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+ if (IS_CHAN_HT40(chan))
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+ power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE8,
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+ AR_PHY_POWERTX_RATE8_POWERTXHT40_5);
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+ else
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+ power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE6,
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+ AR_PHY_POWERTX_RATE6_POWERTXHT20_5);
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+
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+ power += scale;
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+ delta = abs((int) ah->paprd_target_power - (int) power);
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+ if (delta > scale)
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+ return -1;
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+
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+ power += 2 * get_streams(common->tx_chainmask);
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+ return power;
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+}
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+
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+static int ar9003_paprd_setup_single_table(struct ath_hw *ah)
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+{
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+ struct ath_common *common = ath9k_hw_common(ah);
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+ struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
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struct ar9300_modal_eep_header *hdr;
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static const u32 ctrl0[3] = {
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AR_PHY_PAPRD_CTRL0_B0,
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@@ -45,6 +102,7 @@ static void ar9003_paprd_setup_single_ta
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AR_PHY_PAPRD_CTRL1_B2
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};
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u32 am_mask, ht40_mask;
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+ int training_power;
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int i;
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if (ah->curchan && IS_CHAN_5GHZ(ah->curchan))
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@@ -55,11 +113,25 @@ static void ar9003_paprd_setup_single_ta
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am_mask = le32_to_cpu(hdr->papdRateMaskHt20) & AR9300_PAPRD_RATE_MASK;
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ht40_mask = le32_to_cpu(hdr->papdRateMaskHt40) & AR9300_PAPRD_RATE_MASK;
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+ if (IS_CHAN_2GHZ(ah->curchan))
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+ training_power = ar9003_get_training_power_2g(ah);
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+ else
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+ training_power = ar9003_get_training_power_5g(ah);
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+
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+ if (training_power < 0) {
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+ ath_dbg(common, ATH_DBG_CALIBRATE,
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+ "PAPRD target power delta out of range");
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+ return -ERANGE;
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+ }
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+ ah->paprd_training_power = training_power;
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+ ath_dbg(common, ATH_DBG_CALIBRATE,
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+ "Training power: %d, Target power: %d\n",
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+ ah->paprd_training_power, ah->paprd_target_power);
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+
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REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK, am_mask);
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REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK, am_mask);
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REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK, ht40_mask);
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-
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for (i = 0; i < ah->caps.max_txchains; i++) {
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REG_RMW_FIELD(ah, ctrl0[i],
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AR_PHY_PAPRD_CTRL0_USE_SINGLE_TABLE_MASK, 1);
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@@ -141,6 +213,7 @@ static void ar9003_paprd_setup_single_ta
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AR_PHY_PAPRD_PRE_POST_SCALING, 185706);
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REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_7_B0,
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AR_PHY_PAPRD_PRE_POST_SCALING, 175487);
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+ return 0;
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}
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static void ar9003_paprd_get_gain_table(struct ath_hw *ah)
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@@ -595,15 +668,10 @@ void ar9003_paprd_populate_single_table(
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{
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u32 *paprd_table_val = caldata->pa_table[chain];
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u32 small_signal_gain = caldata->small_signal_gain[chain];
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- u32 training_power;
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+ u32 training_power = ah->paprd_training_power;
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u32 reg = 0;
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int i;
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- training_power =
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- REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5,
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- AR_PHY_POWERTX_RATE5_POWERTXHT20_0);
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- training_power -= 4;
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-
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if (chain == 0)
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reg = AR_PHY_PAPRD_MEM_TAB_B0;
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else if (chain == 1)
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@@ -643,14 +711,8 @@ EXPORT_SYMBOL(ar9003_paprd_populate_sing
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int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain)
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{
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-
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unsigned int i, desired_gain, gain_index;
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- unsigned int train_power;
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-
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- train_power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5,
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- AR_PHY_POWERTX_RATE5_POWERTXHT20_0);
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-
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- train_power = train_power - 4;
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+ unsigned int train_power = ah->paprd_training_power;
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desired_gain = ar9003_get_desired_gain(ah, chain, train_power);
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@@ -716,7 +778,12 @@ EXPORT_SYMBOL(ar9003_paprd_create_curve)
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int ar9003_paprd_init_table(struct ath_hw *ah)
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{
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- ar9003_paprd_setup_single_table(ah);
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+ int ret;
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+
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+ ret = ar9003_paprd_setup_single_table(ah);
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+ if (ret < 0)
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+ return ret;
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+
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ar9003_paprd_get_gain_table(ah);
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return 0;
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}
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--- a/drivers/net/wireless/ath/ath9k/hw.h
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+++ b/drivers/net/wireless/ath/ath9k/hw.h
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@@ -835,6 +835,8 @@ struct ath_hw {
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u32 bb_watchdog_last_status;
|
||||||
|
u32 bb_watchdog_timeout_ms; /* in ms, 0 to disable */
|
||||||
|
|
||||||
|
+ unsigned int paprd_target_power;
|
||||||
|
+ unsigned int paprd_training_power;
|
||||||
|
u32 paprd_gain_table_entries[PAPRD_GAIN_TABLE_ENTRIES];
|
||||||
|
u8 paprd_gain_table_index[PAPRD_GAIN_TABLE_ENTRIES];
|
||||||
|
/*
|
||||||
|
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.h
|
||||||
|
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
|
||||||
|
@@ -1090,6 +1090,14 @@
|
||||||
|
#define AR_PHY_POWERTX_RATE5_POWERTXHT20_0 0x3F
|
||||||
|
#define AR_PHY_POWERTX_RATE5_POWERTXHT20_0_S 0
|
||||||
|
|
||||||
|
+#define AR_PHY_POWERTX_RATE6 (AR_SM_BASE + 0x1d4)
|
||||||
|
+#define AR_PHY_POWERTX_RATE6_POWERTXHT20_5 0x3F00
|
||||||
|
+#define AR_PHY_POWERTX_RATE6_POWERTXHT20_5_S 8
|
||||||
|
+
|
||||||
|
+#define AR_PHY_POWERTX_RATE8 (AR_SM_BASE + 0x1dc)
|
||||||
|
+#define AR_PHY_POWERTX_RATE8_POWERTXHT40_5 0x3F00
|
||||||
|
+#define AR_PHY_POWERTX_RATE8_POWERTXHT40_5_S 8
|
||||||
|
+
|
||||||
|
void ar9003_hw_set_chain_masks(struct ath_hw *ah, u8 rx, u8 tx);
|
||||||
|
|
||||||
|
#endif /* AR9003_PHY_H */
|
||||||
|
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
|
||||||
|
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
|
||||||
|
@@ -4798,6 +4798,14 @@ static void ath9k_hw_ar9300_set_txpower(
|
||||||
|
/* Write target power array to registers */
|
||||||
|
ar9003_hw_tx_power_regwrite(ah, targetPowerValT2);
|
||||||
|
ar9003_hw_calibration_apply(ah, chan->channel);
|
||||||
|
+
|
||||||
|
+ if (IS_CHAN_2GHZ(chan))
|
||||||
|
+ i = ALL_TARGET_HT20_0_8_16;
|
||||||
|
+ else if (IS_CHAN_HT40(chan))
|
||||||
|
+ i = ALL_TARGET_HT40_7;
|
||||||
|
+ else
|
||||||
|
+ i = ALL_TARGET_HT20_7;
|
||||||
|
+ ah->paprd_target_power = targetPowerValT2[i];
|
||||||
|
}
|
||||||
|
|
||||||
|
static u16 ath9k_hw_ar9300_get_spur_channel(struct ath_hw *ah,
|
||||||
|
--- a/drivers/net/wireless/ath/ath9k/main.c
|
||||||
|
+++ b/drivers/net/wireless/ath/ath9k/main.c
|
||||||
|
@@ -373,6 +373,9 @@ void ath_paprd_calibrate(struct work_str
|
||||||
|
if (!caldata)
|
||||||
|
return;
|
||||||
|
|
||||||
|
+ if (ar9003_paprd_init_table(ah) < 0)
|
||||||
|
+ return;
|
||||||
|
+
|
||||||
|
skb = alloc_skb(len, GFP_KERNEL);
|
||||||
|
if (!skb)
|
||||||
|
return;
|
||||||
|
@@ -388,7 +391,6 @@ void ath_paprd_calibrate(struct work_str
|
||||||
|
memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
|
||||||
|
|
||||||
|
ath9k_ps_wakeup(sc);
|
||||||
|
- ar9003_paprd_init_table(ah);
|
||||||
|
for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
|
||||||
|
if (!(common->tx_chainmask & BIT(chain)))
|
||||||
|
continue;
|
||||||
Loading…
Reference in New Issue