This patch is required to improve BT throughput to
meet customer requirement. This patch is a workaround
to put WLAN to sleep during BT cycle and cannot be
upstreamed.
Signed-off-by: Bala Shanmugam <bkamatch@xxxxxxxxxxxxxxxx>
---
...9k-Improve-BT-PAN-FTP-profile-performance.patch | 140 ++++++++++++++++++++
1 files changed, 140 insertions(+), 0 deletions(-)
create mode 100644 crap/0005-ath9k-Improve-BT-PAN-FTP-profile-performance.patch
diff --git a/crap/0005-ath9k-Improve-BT-PAN-FTP-profile-performance.patch b/crap/0005-ath9k-Improve-BT-PAN-FTP-profile-performance.patch
new file mode 100644
index 0000000..a566351
--- /dev/null
+++ b/crap/0005-ath9k-Improve-BT-PAN-FTP-profile-performance.patch
@@ -0,0 +1,140 @@
+From 6c4e8baa270c00e16a606bf0ad4a686bd5c0300c Mon Sep 17 00:00:00 2001
+From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
+Date: Fri, 23 Nov 2012 14:17:59 +0530
+Subject: [PATCH] ath9k: Improve BT PAN/FTP profile performance
+
+As AR9565 shares LNA and antenna for both BT & WLAN, there
+are some degrade in BT performance. In order to improve BT PAN/FTP
+profile performance, this change puts WLAN into sleep state
+whenever BT gets its slot during BTCOEX period. It improves
+BT performance at the cost of WLAN throughout. Hence this change
+is applied only for AR9565 and BT FTP/PAN profiles.
+
+Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
+---
+ drivers/net/wireless/ath/ath9k/btcoex.c | 13 +++++++++++++
+ drivers/net/wireless/ath/ath9k/btcoex.h | 1 +
+ drivers/net/wireless/ath/ath9k/gpio.c | 5 ++++-
+ drivers/net/wireless/ath/ath9k/mci.c | 13 +++++++++++++
+ drivers/net/wireless/ath/ath9k/mci.h | 1 +
+ drivers/net/wireless/ath/ath9k/reg.h | 5 ++++-
+ 6 files changed, 36 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/wireless/ath/ath9k/btcoex.c b/drivers/net/wireless/ath/ath9k/btcoex.c
+index 9963b0b..40a9761 100644
+--- a/drivers/net/wireless/ath/ath9k/btcoex.c
++++ b/drivers/net/wireless/ath/ath9k/btcoex.c
+@@ -414,3 +414,16 @@ void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw *ah, u8 *stomp_txprio)
+ btcoex->tx_prio[i] = stomp_txprio[i];
+ }
+ EXPORT_SYMBOL(ath9k_hw_btcoex_set_concur_txprio);
++
++void ath9k_hw_btcoex_set_sleep(struct ath_hw *ah, u8 state)
++{
++ REG_RMW_FIELD(ah, AR_PCU_MISC_MODE2,
++ AR_PCU_MISC_MODE2_PM_FIELD_FOR_DAT, state);
++ REG_RMW_FIELD(ah, AR_PCU_MISC_MODE3,
++ AR_PCU_MISC_MODE3_PM_FIELD_FOR_MGT, state);
++ if (state)
++ REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
++ else
++ REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
++}
++EXPORT_SYMBOL(ath9k_hw_btcoex_set_sleep);
+diff --git a/drivers/net/wireless/ath/ath9k/btcoex.h b/drivers/net/wireless/ath/ath9k/btcoex.h
+index 6de26ea..5e82cca 100644
+--- a/drivers/net/wireless/ath/ath9k/btcoex.h
++++ b/drivers/net/wireless/ath/ath9k/btcoex.h
+@@ -120,5 +120,6 @@ void ath9k_hw_btcoex_disable(struct ath_hw *ah);
+ void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
+ enum ath_stomp_type stomp_type);
+ void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw *ah, u8 *stomp_txprio);
++void ath9k_hw_btcoex_set_sleep(struct ath_hw *ah, u8 state);
+
+ #endif
+diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c
+index 4b412aa..6599f76 100644
+--- a/drivers/net/wireless/ath/ath9k/gpio.c
++++ b/drivers/net/wireless/ath/ath9k/gpio.c
+@@ -234,8 +234,10 @@ static void ath_btcoex_period_timer(unsigned long data)
+ if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
+ ath_detect_bt_priority(sc);
+
+- if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
++ if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
++ ath9k_mci_set_sleep(sc, 0);
+ ath_mci_ftp_adjust(sc);
++ }
+
+ spin_lock_bh(&btcoex->btcoex_lock);
+
+@@ -303,6 +305,7 @@ static void ath_btcoex_no_stomp_timer(void *arg)
+
+ ath9k_hw_btcoex_enable(ah);
+ spin_unlock_bh(&btcoex->btcoex_lock);
++ ath9k_mci_set_sleep(sc, 1);
+ ath9k_ps_restore(sc);
+ }
+
+diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c
+index 706378e..419c11f 100644
+--- a/drivers/net/wireless/ath/ath9k/mci.c
++++ b/drivers/net/wireless/ath/ath9k/mci.c
+@@ -745,6 +745,7 @@ static void ath9k_mci_stomp_audio(struct ath_softc *sc)
+
+ btcoex->stomp_audio++;
+ }
++
+ void ath9k_mci_update_rssi(struct ath_softc *sc)
+ {
+ struct ath_hw *ah = sc->sc_ah;
+@@ -772,3 +773,15 @@ void ath9k_mci_update_rssi(struct ath_softc *sc)
+ }
+ }
+ }
++
++void ath9k_mci_set_sleep(struct ath_softc *sc, u8 state)
++{
++ struct ath_mci_profile *mci = &sc->btcoex.mci;
++
++ if (!AR_SREV_9565(sc->sc_ah))
++ return;
++
++ state = (state && (mci->num_pan || mci->num_other_acl)) ? 1 : 0;
++
++ ath9k_hw_btcoex_set_sleep(sc->sc_ah, state);
++}
+diff --git a/drivers/net/wireless/ath/ath9k/mci.h b/drivers/net/wireless/ath/ath9k/mci.h
+index 0695883..4f39730 100644
+--- a/drivers/net/wireless/ath/ath9k/mci.h
++++ b/drivers/net/wireless/ath/ath9k/mci.h
+@@ -155,6 +155,7 @@ int ath_mci_setup(struct ath_softc *sc);
+ void ath_mci_cleanup(struct ath_softc *sc);
+ void ath_mci_intr(struct ath_softc *sc);
+ void ath9k_mci_update_rssi(struct ath_softc *sc);
++void ath9k_mci_set_sleep(struct ath_softc *sc, u8 state);
+
+ #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+ void ath_mci_enable(struct ath_softc *sc);
+diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
+index ad3c82c..69277f2 100644
+--- a/drivers/net/wireless/ath/ath9k/reg.h
++++ b/drivers/net/wireless/ath/ath9k/reg.h
+@@ -1897,10 +1897,13 @@ enum {
+ #define AR_PCU_MISC_MODE2_ENABLE_AGGWEP 0x00020000
+ #define AR_PCU_MISC_MODE2_HWWAR1 0x00100000
+ #define AR_PCU_MISC_MODE2_HWWAR2 0x02000000
++#define AR_PCU_MISC_MODE2_PM_FIELD_FOR_DAT 0x04000000
++#define AR_PCU_MISC_MODE2_PM_FIELD_FOR_DAT_S 26
+ #define AR_PCU_MISC_MODE2_RESERVED2 0xFFFE0000
+
+ #define AR_PCU_MISC_MODE3 0x83d0
+-
++#define AR_PCU_MISC_MODE3_PM_FIELD_FOR_MGT 0x00400000
++#define AR_PCU_MISC_MODE3_PM_FIELD_FOR_MGT_S 22
+ #define AR_MAC_PCU_ASYNC_FIFO_REG3 0x8358
+ #define AR_MAC_PCU_ASYNC_FIFO_REG3_DATAPATH_SEL 0x00000400
+ #define AR_MAC_PCU_ASYNC_FIFO_REG3_SOFT_RESET 0x80000000
+--
+1.8.0
+
--
1.7.4.1
--
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