From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
To: <linville@tuxdriver.com>
Cc: <linux-wireless@vger.kernel.org>
Subject: [PATCH v3 16/20] ath9k_hw: fix BT RF performance
Date: Mon, 4 Jun 2012 16:28:31 +0530 [thread overview]
Message-ID: <20428.38103.52026.288964@gargle.gargle.HOWL> (raw)
From: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
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 <rmanohar@qca.qualcomm.com>
---
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 854dff6..8b09a82 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 652ab8c..f4a6a44 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 9f0f5f7..98478fd 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;
--
1.7.10.3
reply other threads:[~2012-06-04 10:59 UTC|newest]
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