From nobody Mon Nov 25 02:47:42 2024 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1BA45194151; Wed, 30 Oct 2024 10:08:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=211.75.126.72 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730282905; cv=none; b=aAz8ZyHiIs7rMMN35ghSbSmyLQzyB4hRUX5vC10GTAM0UhHOpb9QImawTKdpj/yLhk/yxPoO7yqX3uvEEFnSeLyFQskFqmUUFUS1A3WLteR97GH25J5a1fYB7U7a6Rh6KcL4sOn/O32rxrx/XmjodkXnVal/bldDzSwemJ6WXFk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730282905; c=relaxed/simple; bh=7Q+MTQAKucz7iLxuJeNISzJ9qykwouLo3OSjZDpUyFs=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=F7Ufz7Qrvx6jeGsK29M6NMBonhVPhGvIl1xyWJL+TGkSHAWbtgMeHEL4BKKO3lFwK3o17mg0JJExL47nnle1mKj8hAgN/p3TKS18feMbeMr1k7HUIEWK58PMLzRiUjosKUcf4cCf11LmBXo6f4bnE2pdGduZ/xXcMZ9vB51w4IM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com; spf=pass smtp.mailfrom=realtek.com; dkim=temperror (0-bit key) header.d=realtek.com header.i=@realtek.com header.b=TSC31qEP; arc=none smtp.client-ip=211.75.126.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=realtek.com Authentication-Results: smtp.subspace.kernel.org; dkim=temperror (0-bit key) header.d=realtek.com header.i=@realtek.com header.b="TSC31qEP" X-SpamFilter-By: ArmorX SpamTrap 5.78 with qID 49UA89irC3852080, This message is accepted by code: ctloc85258 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=realtek.com; s=dkim; t=1730282889; bh=7Q+MTQAKucz7iLxuJeNISzJ9qykwouLo3OSjZDpUyFs=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version: Content-Transfer-Encoding:Content-Type; b=TSC31qEPq6jIlmKGj1cXD/lxxj/Ke76wzyZjg1D1wt68W2Y9wguNt4kPeLZcrYDQD Ci71n+V5nv6yBLWL5PM/rtwcEFLfW9l0UHAY+JHAQIJcOi/WNCgd5eDrnSepWJVPMn 54dxakyN2/M/agQCgWnebDBRJ/dKpbRjJTUuVQhhcCQBqyXkFTn7OYVQv+btMN4Ywc njAE4trr9cw4KwGi/S4E84gy430BczMIOb10mNheoTrsV2yuaRkEyWTvddnWcsFSM1 E0GJYbYj7uhHp4az+IA495Ma7q0LQjtt9M+8TdrsiUwp2QShRZbjAKubDMpY7CHA1f TbCjrXO1+qZMQ== Received: from mail.realtek.com (rtexh36505.realtek.com.tw[172.21.6.25]) by rtits2.realtek.com.tw (8.15.2/3.06/5.92) with ESMTPS id 49UA89irC3852080 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 30 Oct 2024 18:08:09 +0800 Received: from RTEXMBS04.realtek.com.tw (172.21.6.97) by RTEXH36505.realtek.com.tw (172.21.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Wed, 30 Oct 2024 18:08:09 +0800 Received: from localhost.localhost (172.21.132.53) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Wed, 30 Oct 2024 18:08:08 +0800 From: Hilda Wu To: CC: , , , , , Subject: [PATCH] bluetooth: add quirk using packet size 60 Date: Wed, 30 Oct 2024 18:08:04 +0800 Message-ID: <20241030100804.2743115-1-hildawu@realtek.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: RTEXH36506.realtek.com.tw (172.21.6.27) To RTEXMBS04.realtek.com.tw (172.21.6.97) Content-Type: text/plain; charset="utf-8" The RTL8852BE-VT supports USB alternate setting 6. However, its descriptor does not report this capability to the host. Therefore, a quirk is needed to bypass the RTL8852BE-VT's descriptor and allow it to use USB ALT 6 directly. Signed-off-by: Hilda Wu --- drivers/bluetooth/btrtl.c | 3 ++ drivers/bluetooth/btrtl.h | 1 + drivers/bluetooth/btusb.c | 89 ++++++++++++++++++++++++++++++--------- 3 files changed, 73 insertions(+), 20 deletions(-) diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 0bcb44cf7b31..b75f0b36a09b 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -1312,6 +1312,9 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct bt= rtl_device_info *btrtl_dev) btrtl_dev->project_id =3D=3D CHIP_ID_8852C) set_bit(HCI_QUIRK_USE_MSFT_EXT_ADDRESS_FILTER, &hdev->quirks); =20 + if (btrtl_dev->project_id =3D=3D CHIP_ID_8852BT) + btrealtek_set_flag(hdev, REALTEK_ALT6_FORCE); + hci_set_aosp_capable(hdev); break; default: diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h index a2d9d34f9fb0..ffec2fca88ec 100644 --- a/drivers/bluetooth/btrtl.h +++ b/drivers/bluetooth/btrtl.h @@ -105,6 +105,7 @@ struct rtl_vendor_cmd { =20 enum { REALTEK_ALT6_CONTINUOUS_TX_CHIP, + REALTEK_ALT6_FORCE, =20 __REALTEK_NUM_FLAGS, }; diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 514d593923ad..eca0b173232e 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -804,6 +804,7 @@ struct qca_dump_info { #define BTUSB_USE_ALT3_FOR_WBS 15 #define BTUSB_ALT6_CONTINUOUS_TX 16 #define BTUSB_HW_SSR_ACTIVE 17 +#define BTUSB_ALT_CHANGED 18 =20 struct btusb_data { struct hci_dev *hdev; @@ -2130,16 +2131,61 @@ static void btusb_notify(struct hci_dev *hdev, unsi= gned int evt) } } =20 +static struct usb_host_interface *btusb_find_altsetting(struct btusb_data = *data, + int alt) +{ + struct usb_interface *intf =3D data->isoc; + int i; + + BT_DBG("Looking for Alt no :%d", alt); + + if (!intf) + return NULL; + + for (i =3D 0; i < intf->num_altsetting; i++) { + if (intf->altsetting[i].desc.bAlternateSetting =3D=3D alt) + return &intf->altsetting[i]; + } + + return NULL; +} + static inline int __set_isoc_interface(struct hci_dev *hdev, int altsettin= g) { struct btusb_data *data =3D hci_get_drvdata(hdev); struct usb_interface *intf =3D data->isoc; struct usb_endpoint_descriptor *ep_desc; + struct usb_host_interface *alt; int i, err; =20 if (!data->isoc) return -ENODEV; =20 + /* For some Realtek chips, they actually have the altsetting 6, but its + * altsetting descriptor is not exposed. We can activate altsetting 6 by + * replacing the altsetting 5. + */ + if (altsetting =3D=3D 6 && !btusb_find_altsetting(data, 6) && + btrealtek_test_flag(hdev, REALTEK_ALT6_FORCE)) { + alt =3D NULL; + for (i =3D 0; i < intf->num_altsetting; i++) { + if (intf->altsetting[i].desc.bAlternateSetting =3D=3D 5) { + alt =3D &intf->altsetting[i]; + break; + } + } + if (alt) { + for (i =3D 0; i < alt->desc.bNumEndpoints; i++) { + ep_desc =3D &alt->endpoint[i].desc; + if (usb_endpoint_is_isoc_out(ep_desc) || + usb_endpoint_is_isoc_in(ep_desc)) + ep_desc->wMaxPacketSize =3D 63; + } + alt->desc.bAlternateSetting =3D 6; + set_bit(BTUSB_ALT_CHANGED, &data->flags); + } + } + err =3D usb_set_interface(data->udev, data->isoc_ifnum, altsetting); if (err < 0) { bt_dev_err(hdev, "setting interface failed (%d)", -err); @@ -2151,6 +2197,27 @@ static inline int __set_isoc_interface(struct hci_de= v *hdev, int altsetting) data->isoc_tx_ep =3D NULL; data->isoc_rx_ep =3D NULL; =20 + /* Recover alt 5 desc if alt 0 is set. */ + if (!altsetting && test_bit(BTUSB_ALT_CHANGED, &data->flags)) { + alt =3D NULL; + for (i =3D 0; i < intf->num_altsetting; i++) { + if (intf->altsetting[i].desc.bAlternateSetting =3D=3D 6) { + alt =3D &intf->altsetting[i]; + break; + } + } + if (alt) { + for (i =3D 0; i < alt->desc.bNumEndpoints; i++) { + ep_desc =3D &alt->endpoint[i].desc; + if (usb_endpoint_is_isoc_out(ep_desc) || + usb_endpoint_is_isoc_in(ep_desc)) + ep_desc->wMaxPacketSize =3D 49; + } + alt->desc.bAlternateSetting =3D 5; + clear_bit(BTUSB_ALT_CHANGED, &data->flags); + } + } + for (i =3D 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { ep_desc =3D &intf->cur_altsetting->endpoint[i].desc; =20 @@ -2213,25 +2280,6 @@ static int btusb_switch_alt_setting(struct hci_dev *= hdev, int new_alts) return 0; } =20 -static struct usb_host_interface *btusb_find_altsetting(struct btusb_data = *data, - int alt) -{ - struct usb_interface *intf =3D data->isoc; - int i; - - BT_DBG("Looking for Alt no :%d", alt); - - if (!intf) - return NULL; - - for (i =3D 0; i < intf->num_altsetting; i++) { - if (intf->altsetting[i].desc.bAlternateSetting =3D=3D alt) - return &intf->altsetting[i]; - } - - return NULL; -} - static void btusb_work(struct work_struct *work) { struct btusb_data *data =3D container_of(work, struct btusb_data, work); @@ -2269,7 +2317,8 @@ static void btusb_work(struct work_struct *work) * MTU >=3D 3 (packets) * 25 (size) - 3 (headers) =3D 72 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1. */ - if (btusb_find_altsetting(data, 6)) + if (btusb_find_altsetting(data, 6) || + btrealtek_test_flag(hdev, REALTEK_ALT6_FORCE)) new_alts =3D 6; else if (btusb_find_altsetting(data, 3) && hdev->sco_mtu >=3D 72 && --=20 2.34.1