diff options
| author | Rajkumar Manoharan <rmanohar@qca.qualcomm.com> | 2012-06-18 17:32:40 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-06-20 23:14:54 +0400 |
| commit | 4ff6a9d200c66f192da61822c36ad14424e218d6 (patch) | |
| tree | b2ce62b7bc20aa2bedcea0581456c3090b786130 /drivers | |
| parent | 0967d862315366e2ef2401301ff2b1756928b4c1 (diff) | |
| download | linux-4ff6a9d200c66f192da61822c36ad14424e218d6.tar.xz | |
ath9k_hw: fix LNA control on WLAN sleep
When WLAN enter full sleep mode, WLAN HW should send out a LNA_TAKE
message for BT to take control of the shared LNA. Otherwise BT traffic
is completely stopped whenever the wlan interface is moved full sleep
mode.
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_mci.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c index 867238f9d139..61558375bfbf 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c @@ -1015,9 +1015,14 @@ void ar9003_mci_2g5g_switch(struct ath_hw *ah, bool force) return; if (mci->is_2g) { - ar9003_mci_send_2g5g_status(ah, true); + if (!force) { + ar9003_mci_send_2g5g_status(ah, true); - REG_SET_BIT(ah, AR_MCI_TX_CTRL, + ar9003_mci_send_lna_transfer(ah, true); + udelay(5); + } + + REG_CLR_BIT(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE); REG_CLR_BIT(ah, AR_PHY_GLB_CONTROL, AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL); @@ -1025,6 +1030,11 @@ void ar9003_mci_2g5g_switch(struct ath_hw *ah, bool force) if (!(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA)) ar9003_mci_osla_setup(ah, true); } else { + if (!force) { + ar9003_mci_send_lna_take(ah, true); + udelay(5); + } + REG_SET_BIT(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE); REG_SET_BIT(ah, AR_PHY_GLB_CONTROL, @@ -1251,6 +1261,9 @@ void ar9003_mci_bt_gain_ctrl(struct ath_hw *ah) ath_dbg(common, MCI, "Give LNA and SPDT control to BT\n"); + ar9003_mci_send_lna_take(ah, true); + udelay(50); + REG_SET_BIT(ah, AR_PHY_GLB_CONTROL, AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL); mci->is_2g = false; mci->update_2g5g = true; |