From: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
Commit "ath9k_hw: remove ATH_BTCOEX_CFG_MCI" removed
MCI as a separate coex scheme, but we need it to
avoid fiddling with GPIO registers during
ath9k_init_btcoex() that are meant only for 3-wire
cards.
Cc: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
Signed-off-by: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/btcoex.c | 40 ++++++++++++++++++++++-----------
drivers/net/wireless/ath/ath9k/btcoex.h | 1 +
drivers/net/wireless/ath/ath9k/gpio.c | 23 ++++++++++---------
3 files changed, 40 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/btcoex.c b/drivers/net/wireless/ath/ath9k/btcoex.c
index 3dfc2c7..78e892e 100644
--- a/drivers/net/wireless/ath/ath9k/btcoex.c
+++ b/drivers/net/wireless/ath/ath9k/btcoex.c
@@ -103,7 +103,9 @@ void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah)
return;
}
- if (AR_SREV_9300_20_OR_LATER(ah)) {
+ if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
+ btcoex_hw->scheme = ATH_BTCOEX_CFG_MCI;
+ } else if (AR_SREV_9300_20_OR_LATER(ah)) {
btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300;
btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300;
@@ -307,6 +309,18 @@ static void ath9k_hw_btcoex_enable_mci(struct ath_hw *ah)
btcoex->enabled = true;
}
+static void ath9k_hw_btcoex_disable_mci(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ int i;
+
+ ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
+
+ for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
+ REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
+ btcoex_hw->wlan_weight[i]);
+}
+
void ath9k_hw_btcoex_enable(struct ath_hw *ah)
{
struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
@@ -318,17 +332,18 @@ void ath9k_hw_btcoex_enable(struct ath_hw *ah)
ath9k_hw_btcoex_enable_2wire(ah);
break;
case ATH_BTCOEX_CFG_3WIRE:
- if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
- ath9k_hw_btcoex_enable_mci(ah);
- return;
- }
ath9k_hw_btcoex_enable_3wire(ah);
break;
+ case ATH_BTCOEX_CFG_MCI:
+ ath9k_hw_btcoex_enable_mci(ah);
+ break;
}
- REG_RMW(ah, AR_GPIO_PDPU,
- (0x2 << (btcoex_hw->btactive_gpio * 2)),
- (0x3 << (btcoex_hw->btactive_gpio * 2)));
+ if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI) {
+ REG_RMW(ah, AR_GPIO_PDPU,
+ (0x2 << (btcoex_hw->btactive_gpio * 2)),
+ (0x3 << (btcoex_hw->btactive_gpio * 2)));
+ }
ah->btcoex_hw.enabled = true;
}
@@ -340,13 +355,12 @@ void ath9k_hw_btcoex_disable(struct ath_hw *ah)
int i;
btcoex_hw->enabled = false;
- if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
- ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
- for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
- REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
- btcoex_hw->wlan_weight[i]);
+
+ if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_MCI) {
+ ath9k_hw_btcoex_disable_mci(ah);
return;
}
+
ath9k_hw_set_gpio(ah, btcoex_hw->wlanactive_gpio, 0);
ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio,
diff --git a/drivers/net/wireless/ath/ath9k/btcoex.h b/drivers/net/wireless/ath/ath9k/btcoex.h
index 6de26ea..5fe62ff 100644
--- a/drivers/net/wireless/ath/ath9k/btcoex.h
+++ b/drivers/net/wireless/ath/ath9k/btcoex.h
@@ -58,6 +58,7 @@ enum ath_btcoex_scheme {
ATH_BTCOEX_CFG_NONE,
ATH_BTCOEX_CFG_2WIRE,
ATH_BTCOEX_CFG_3WIRE,
+ ATH_BTCOEX_CFG_MCI,
};
struct ath9k_hw_mci {
diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c
index 257ffce..b4a0612 100644
--- a/drivers/net/wireless/ath/ath9k/gpio.c
+++ b/drivers/net/wireless/ath/ath9k/gpio.c
@@ -280,6 +280,7 @@ static void ath_init_btcoex_timer(struct ath_softc *sc)
btcoex->btcoex_period / 100;
btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
btcoex->btcoex_period / 100;
+ btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
(unsigned long) sc);
@@ -408,19 +409,19 @@ int ath9k_init_btcoex(struct ath_softc *sc)
case ATH_BTCOEX_CFG_3WIRE:
ath9k_hw_btcoex_init_3wire(sc->sc_ah);
ath_init_btcoex_timer(sc);
-
txq = sc->tx.txq_map[IEEE80211_AC_BE];
ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
- sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
- if (ath9k_hw_mci_is_enabled(ah)) {
- sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
- INIT_LIST_HEAD(&sc->btcoex.mci.info);
- ath9k_hw_btcoex_init_mci(ah);
-
- r = ath_mci_setup(sc);
- if (r)
- return r;
- }
+ break;
+ case ATH_BTCOEX_CFG_MCI:
+ ath_init_btcoex_timer(sc);
+
+ sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
+ INIT_LIST_HEAD(&sc->btcoex.mci.info);
+ ath9k_hw_btcoex_init_mci(ah);
+
+ r = ath_mci_setup(sc);
+ if (r)
+ return r;
break;
default:
--
2.3.0
--
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