diff options
| author | Chris Chiu <chiu@endlessm.com> | 2019-10-05 12:48:26 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-10-09 11:25:58 +0300 |
| commit | e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 (patch) | |
| tree | 0c493fde39dacf3b5a3a8ff704aad34a170271c7 /drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c | |
| parent | d10dcb615c8e29d403a24d35f8310a7a53e3050c (diff) | |
| download | linux-e542e66b7c2ee2adeefdbb7f259f2f60cadf2819.tar.xz | |
rtl8xxxu: add bluetooth co-existence support for single antenna
The RTL8723BU suffers the wifi disconnection problem while bluetooth
device connected. While wifi is doing tx/rx, the bluetooth will scan
without results. This is due to the wifi and bluetooth share the same
single antenna for RF communication and they need to have a mechanism
to collaborate.
BT information is provided via the packet sent from co-processor to
host (C2H). It contains the status of BT but the rtl8723bu_handle_c2h
dose not really handle it. And there's no bluetooth coexistence
mechanism to deal with it.
This commit adds a workqueue to set the tdma configurations and
coefficient table per the parsed bluetooth link status and given
wifi connection state. The tdma/coef table comes from the vendor
driver code of the RTL8192EU and RTL8723BU. However, this commit is
only for single antenna scenario which RTL8192EU is default dual
antenna. The rtl8xxxu_parse_rxdesc24 which invokes the handle_c2h
is only for 8723b and 8192e so the mechanism is expected to work
on both chips with single antenna. Note RTL8192EU dual antenna is
not supported.
Signed-off-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c index ceffe05bd65b..9ba661b3d767 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c @@ -1580,9 +1580,7 @@ static void rtl8723b_enable_rf(struct rtl8xxxu_priv *priv) /* * Software control, antenna at WiFi side */ -#ifdef NEED_PS_TDMA rtl8723bu_set_ps_tdma(priv, 0x08, 0x00, 0x00, 0x00, 0x00); -#endif rtl8xxxu_write32(priv, REG_BT_COEX_TABLE1, 0x55555555); rtl8xxxu_write32(priv, REG_BT_COEX_TABLE2, 0x55555555); |