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Subject[PATCH 1/2] rtl8xxxu: feed antenna information for cfg80211
Date
Fill up the available TX/RX antenna so the iw commands can show
correct antenna information for different chips.

Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
---
.../wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
index 06d59ffb7444..d225a1257530 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -1607,6 +1607,7 @@ static void rtl8xxxu_print_chipinfo(struct rtl8xxxu_priv *priv)
static int rtl8xxxu_identify_chip(struct rtl8xxxu_priv *priv)
{
struct device *dev = &priv->udev->dev;
+ struct ieee80211_hw *hw = priv->hw;
u32 val32, bonding;
u16 val16;

@@ -1684,6 +1685,9 @@ static int rtl8xxxu_identify_chip(struct rtl8xxxu_priv *priv)
priv->has_wifi = 1;
}

+ hw->wiphy->available_antennas_tx = BIT(priv->tx_paths) - 1;
+ hw->wiphy->available_antennas_rx = BIT(priv->rx_paths) - 1;
+
switch (priv->rtl_chip) {
case RTL8188E:
case RTL8192E:
@@ -4282,6 +4286,17 @@ static void rtl8xxxu_cam_write(struct rtl8xxxu_priv *priv,
rtl8xxxu_debug = tmp_debug;
}

+static
+int rtl8xxxu_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
+{
+ struct rtl8xxxu_priv *priv = hw->priv;
+
+ *tx_ant = BIT(priv->tx_paths) - 1;
+ *rx_ant = BIT(priv->rx_paths) - 1;
+
+ return 0;
+}
+
static void rtl8xxxu_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, const u8 *mac)
{
@@ -6472,6 +6487,7 @@ static const struct ieee80211_ops rtl8xxxu_ops = {
.set_key = rtl8xxxu_set_key,
.ampdu_action = rtl8xxxu_ampdu_action,
.sta_statistics = rtl8xxxu_sta_statistics,
+ .get_antenna = rtl8xxxu_get_antenna,
};

static int rtl8xxxu_parse_usb(struct rtl8xxxu_priv *priv,
--
2.20.1
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