From 99922a45e96b22df387823ad5ecfe4dc26a96c9e Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Mon, 4 Jun 2012 16:28:31 +0530 Subject: [PATCH] ath9k_hw: fix BT RF performance When software rfkill is triggered, before put the chip in reset state, give LNA and SPDT control to BT to make sure BT can have good RF performance. Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_mci.c | 16 ++++++++++++++++ drivers/net/wireless/ath/ath9k/ar9003_mci.h | 1 + drivers/net/wireless/ath/ath9k/hw.c | 3 +++ 3 files changed, 20 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c index 854dff66a63..8b09a8239c1 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c @@ -1391,3 +1391,19 @@ u32 ar9003_mci_state(struct ath_hw *ah, u32 state_type, u32 *p_data) return value; } EXPORT_SYMBOL(ar9003_mci_state); + +void ar9003_mci_bt_gain_ctrl(struct ath_hw *ah) +{ + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci; + + ath_dbg(common, MCI, "Give LNA and SPDT control to BT\n"); + + REG_SET_BIT(ah, AR_PHY_GLB_CONTROL, AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL); + mci->is_2g = false; + mci->update_2g5g = true; + ar9003_mci_send_2g5g_status(ah, true); + + /* Force another 2g5g update at next scanning */ + mci->update_2g5g = true; +} diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.h b/drivers/net/wireless/ath/ath9k/ar9003_mci.h index 652ab8c39e2..f4a6a4450ba 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_mci.h +++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.h @@ -266,6 +266,7 @@ void ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf, void ar9003_mci_cleanup(struct ath_hw *ah); void ar9003_mci_get_interrupt(struct ath_hw *ah, u32 *raw_intr, u32 *rx_msg_intr); +void ar9003_mci_bt_gain_ctrl(struct ath_hw *ah); /* * These functions are used by ath9k_hw. diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 9f0f5f74f17..98478fd5d28 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -2737,6 +2737,9 @@ EXPORT_SYMBOL(ath9k_hw_setrxfilter); bool ath9k_hw_phy_disable(struct ath_hw *ah) { + if (ath9k_hw_mci_is_enabled(ah)) + ar9003_mci_bt_gain_ctrl(ah); + if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM)) return false; -- 2.41.0