UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ath9k: stomp audio profiles on weak signal strength 

On lower WLAN signal strength, WLAN downlink traffic might suffer
from retransmissions. At the mean time, playing SCO/A2DP profiles
is affecting WLAN stability. In such scenario, by stomping SCO/A2DP
BT traffic completely for a BTCOEX period, gives WLAN traffic an
oppertunity to recover PHY rate. It also improves WLAN stability at
lower RSSI without sacificing BT traffic.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rajkumar Manoharan 2012-11-20 18:30:01 +05:30 committed by John W. Linville
parent b88083bfb3
commit 2884561a64
5 changed files with 25 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -488,6 +488,7 @@ struct ath_btcoex {
int rssi_count;
struct ath_gen_timer *no_stomp_timer; /* Timer for no BT stomping */
struct ath_mci_profile mci;
u8 stomp_audio;
};
#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT

1
drivers/net/wireless/ath/ath9k/btcoex.c
View File

@ -49,6 +49,7 @@ static const u32 mci_wlan_weights[ATH_BTCOEX_STOMP_MAX]
{ 0x01017d01, 0x3b3b3b01, 0x3b3b3b01, 0x3b3b3b3b }, /* STOMP_LOW */
{ 0x01017d01, 0x01010101, 0x01010101, 0x01010101 }, /* STOMP_NONE */
{ 0x01017d01, 0x013b0101, 0x3b3b0101, 0x3b3b013b }, /* STOMP_LOW_FTP */
{ 0xffffff01, 0xffffffff, 0xffffff01, 0xffffffff }, /* STOMP_AUDIO */
};
void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum)

1
drivers/net/wireless/ath/ath9k/btcoex.h
View File

@ -50,6 +50,7 @@ enum ath_stomp_type {
ATH_BTCOEX_STOMP_LOW,
ATH_BTCOEX_STOMP_NONE,
ATH_BTCOEX_STOMP_LOW_FTP,
ATH_BTCOEX_STOMP_AUDIO,
ATH_BTCOEX_STOMP_MAX
};

5
drivers/net/wireless/ath/ath9k/gpio.c
View File

@ -247,6 +247,9 @@ static void ath_btcoex_period_timer(unsigned long data)
stomp_type = ATH_BTCOEX_STOMP_ALL;
timer_period = btcoex->btscan_no_stomp;
}
} else if (btcoex->stomp_audio >= 5) {
stomp_type = ATH_BTCOEX_STOMP_AUDIO;
btcoex->stomp_audio = 0;
}
ath9k_hw_btcoex_bt_stomp(ah, stomp_type);
@ -295,7 +298,7 @@ static void ath_btcoex_no_stomp_timer(void *arg)
(!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) &&
test_bit(BT_OP_SCAN, &btcoex->op_flags)))
ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
ath9k_hw_btcoex_enable(ah);

18
drivers/net/wireless/ath/ath9k/mci.c
View File

@ -729,12 +729,30 @@ void ath9k_mci_set_txpower(struct ath_softc *sc, bool setchannel,
ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false);
}
static void ath9k_mci_stomp_audio(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_btcoex *btcoex = &sc->btcoex;
struct ath_mci_profile *mci = &btcoex->mci;
if (!mci->num_sco && !mci->num_a2dp)
return;
if (ah->stats.avgbrssi > 25) {
btcoex->stomp_audio = 0;
return;
}
btcoex->stomp_audio++;
}
void ath9k_mci_update_rssi(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_btcoex *btcoex = &sc->btcoex;
struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;
ath9k_mci_stomp_audio(sc);
if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX))
return;