Return-path: Received: from mail-oi0-f65.google.com ([209.85.218.65]:32963 "EHLO mail-oi0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753997AbdIDRvx (ORCPT ); Mon, 4 Sep 2017 13:51:53 -0400 From: Larry Finger To: kvalo@codeaurora.org Cc: linux-wireless@vger.kernel.org, Larry Finger , Ping-Ke Shih , Yan-Hsuan Chuang , Birming Chiu , Shaofu , Steven Ting , Stable Subject: [PATCH 2/2] rtlwifi: btcoexist: Fix antenna selection code Date: Mon, 4 Sep 2017 12:51:34 -0500 Message-Id: <20170904175134.8331-3-Larry.Finger@lwfinger.net> (sfid-20170904_195214_936898_D3043F06) In-Reply-To: <20170904175134.8331-1-Larry.Finger@lwfinger.net> References: <20170904175134.8331-1-Larry.Finger@lwfinger.net> Sender: linux-wireless-owner@vger.kernel.org List-ID: In commit 87d8a9f35202 ("rtlwifi: btcoex: call bind to setup btcoex"), the code turns on a call to exhalbtc_bind_bt_coex_withadapter(). This routine contains a bug that causes incorrect antenna selection for those HP laptops with only one antenna and an incorrectly programmed EFUSE. These boxes are the ones that need the ant_sel module parameter. Fixes: 87d8a9f35202 ("rtlwifi: btcoex: call bind to setup btcoex") Signed-off-by: Larry Finger Cc: Ping-Ke Shih Cc: Yan-Hsuan Chuang Cc: Birming Chiu Cc: Shaofu Cc: Steven Ting Cc: Stable # 4.13+ --- Kalle, This patch is intended for kernel 4.14. Thanks, Larry --- .../realtek/rtlwifi/btcoexist/halbtcoutsrc.c | 23 +++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c index c1eacd8352a2..b5e9877d935c 100644 --- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c +++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c @@ -173,6 +173,16 @@ static u8 halbtc_get_wifi_central_chnl(struct btc_coexist *btcoexist) u8 rtl_get_hwpg_single_ant_path(struct rtl_priv *rtlpriv) { + struct rtl_mod_params *mod_params = rtlpriv->cfg->mod_params; + + /* override ant_num / ant_path */ + if (mod_params->ant_sel) { + rtlpriv->btcoexist.btc_info.ant_num = + (mod_params->ant_sel == 1 ? ANT_X2 : ANT_X1); + + rtlpriv->btcoexist.btc_info.single_ant_path = + (mod_params->ant_sel == 1 ? 0 : 1); + } return rtlpriv->btcoexist.btc_info.single_ant_path; } @@ -183,6 +193,7 @@ u8 rtl_get_hwpg_bt_type(struct rtl_priv *rtlpriv) u8 rtl_get_hwpg_ant_num(struct rtl_priv *rtlpriv) { + struct rtl_mod_params *mod_params = rtlpriv->cfg->mod_params; u8 num; if (rtlpriv->btcoexist.btc_info.ant_num == ANT_X2) @@ -190,6 +201,10 @@ u8 rtl_get_hwpg_ant_num(struct rtl_priv *rtlpriv) else num = 1; + /* override ant_num / ant_path */ + if (mod_params->ant_sel) + num = (mod_params->ant_sel == 1 ? ANT_X2 : ANT_X1) + 1; + return num; } @@ -876,7 +891,7 @@ bool exhalbtc_bind_bt_coex_withadapter(void *adapter) { struct btc_coexist *btcoexist = &gl_bt_coexist; struct rtl_priv *rtlpriv = adapter; - u8 ant_num = 2, chip_type, single_ant_path = 0; + u8 ant_num = 2, chip_type; if (btcoexist->binded) return false; @@ -911,12 +926,6 @@ bool exhalbtc_bind_bt_coex_withadapter(void *adapter) ant_num = rtl_get_hwpg_ant_num(rtlpriv); exhalbtc_set_ant_num(rtlpriv, BT_COEX_ANT_TYPE_PG, ant_num); - /* set default antenna position to main port */ - btcoexist->board_info.btdm_ant_pos = BTC_ANTENNA_AT_MAIN_PORT; - - single_ant_path = rtl_get_hwpg_single_ant_path(rtlpriv); - exhalbtc_set_single_ant_path(single_ant_path); - if (rtl_get_hwpg_package_type(rtlpriv) == 0) btcoexist->board_info.tfbga_package = false; else if (rtl_get_hwpg_package_type(rtlpriv) == 1) -- 2.12.3