Signed-off-by: Vasanthakumar Thiagarajan <vasanth@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath.h | 1 +
drivers/net/wireless/ath/ath9k/hw.c | 5 +++++
drivers/net/wireless/ath/ath9k/hw.h | 2 ++
drivers/net/wireless/ath/ath9k/main.c | 3 +++
drivers/net/wireless/ath/ath9k/pci.c | 12 ++++++++++++
5 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 26bdbee..f913db4 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -131,6 +131,7 @@ struct ath_bus_ops {
void (*read_cachesize)(struct ath_common *common, int *csz);
bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
void (*bt_coex_prep)(struct ath_common *common);
+ void (*extn_synch_en)(struct ath_common *common);
};
struct ath_common {
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 513ae64..b1d3c1e 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1984,6 +1984,11 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
+ if (AR_SREV_9485_10(ah)) {
+ pCap->pcie_lcr_extsync_en = true;
+ pCap->pcie_lcr_offset = 0x80;
+ }
+
return 0;
}
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index bde1df3..1eb6a14 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -210,6 +210,8 @@ struct ath9k_hw_capabilities {
u8 rx_status_len;
u8 tx_desc_len;
u8 txs_len;
+ u16 pcie_lcr_offset;
+ bool pcie_lcr_extsync_en;
};
struct ath9k_ops_config {
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index f026a03..581dbd7 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1188,6 +1188,9 @@ static int ath9k_start(struct ieee80211_hw *hw)
pm_qos_update_request(&sc->pm_qos_req, 55);
+ if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
+ common->bus_ops->extn_synch_en(common);
+
mutex_unlock:
mutex_unlock(&sc->mutex);
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index 09f69a9..c5a523d 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -104,11 +104,23 @@ static void ath_pci_bt_coex_prep(struct ath_common *common)
pci_write_config_byte(pdev, ATH_PCIE_CAP_LINK_CTRL, aspm);
}
+static void ath_pci_extn_synch_enable(struct ath_common *common)
+{
+ struct ath_softc *sc = (struct ath_softc *) common->priv;
+ struct pci_dev *pdev = to_pci_dev(sc->dev);
+ u8 lnkctl;
+
+ pci_read_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, &lnkctl);
+ lnkctl |= PCI_EXP_LNKCTL_ES;
+ pci_write_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, lnkctl);
+}
+
static const struct ath_bus_ops ath_pci_bus_ops = {
.ath_bus_type = ATH_PCI,
.read_cachesize = ath_pci_read_cachesize,
.eeprom_read = ath_pci_eeprom_read,
.bt_coex_prep = ath_pci_bt_coex_prep,
+ .extn_synch_en = ath_pci_extn_synch_enable,
};
static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
--
1.7.0.4
--
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