From nobody Mon Nov 25 03:29:49 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 145D81547E8; Mon, 18 Nov 2024 08:58:09 +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=1731920294; cv=none; b=pTxGeZdzbSLNBGjHgBzNAnxGVgRYihUvEEbX3/uNZCaVxWB//uSpijQuAg9rMop/PTauF9MLufR3BMfPz+UdVwAK50nqDPpG9P8nxB2Q2pkMu08YDRTjlytY3pUvYzeyQErqzj1Cyfng2gz+LHFNIe4bFQadY43hdUOD/T3QR6E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731920294; c=relaxed/simple; bh=fVGcv5NHUTodxydSx4548Ah1LtAP0wAXvss061Rv5ks=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Q6P3HxBMw3ICB1pFyEblCphkFvvVZGVIwKau6at4PRy/TAXjTDTaGT5wfMbge+VZA17qzNNxomHxJ7v8fsJkGy07SCMYDgk2gJrsjeppyWIuCrZ2g63vjf+Lh10Om6cU5l6+bhWdiIsvN8POdf6g1Lj7dpjaE6YCHGqykWvwnt8= 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=HcNJDjga; 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="HcNJDjga" X-SpamFilter-By: ArmorX SpamTrap 5.78 with qID 4AI8w1Yu9426099, This message is accepted by code: ctloc85258 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=realtek.com; s=dkim; t=1731920281; bh=fVGcv5NHUTodxydSx4548Ah1LtAP0wAXvss061Rv5ks=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version: Content-Transfer-Encoding:Content-Type; b=HcNJDjgaFbBY67fmr2232wAzTK00sH/4TkYMfwEdwMSgrut40xoZxCoSmGTlCL5KE xSWAwTC19gdlN5eQwjaa+JFmjkyQxM/tRdmT31zQjOY5JuxWmYt7+/7CqtMxu49Zu1 d/rwT5p/rOOmOuuykhh44lWg/RhRIKjXsBQRt4QQijNhjtnmR5q1MCDQLwWlB28mfd 8GSgxVkx5bVTFAAJQpCh7wibRYQVrYJj4uxtI8TC06RZGJFC9vwt5EhSpGxInLJ27H 7l7ez+bdBPO5j30TMz+3I6w2AnqGsTS2iFMN6PRSNv5Lbd5ftBcYFHZOXOmthXU7Bk l78LsFmvX0PJA== Received: from mail.realtek.com (rtexh36506.realtek.com.tw[172.21.6.27]) by rtits2.realtek.com.tw (8.15.2/3.06/5.92) with ESMTPS id 4AI8w1Yu9426099 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 18 Nov 2024 16:58:01 +0800 Received: from RTEXMBS04.realtek.com.tw (172.21.6.97) by RTEXH36506.realtek.com.tw (172.21.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Mon, 18 Nov 2024 16:58:02 +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; Mon, 18 Nov 2024 16:58:01 +0800 From: Hilda Wu To: CC: , , , , , Subject: [PATCH v2] bluetooth: add quirk using packet size 60 Date: Mon, 18 Nov 2024 16:57:57 +0800 Message-ID: <20241118085757.3678244-1-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: RTEXH36505.realtek.com.tw (172.21.6.25) 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. The btmon log below shows the case that WBS with the USB alternate setting 6. > ACL Data RX: Handle 2 flags 0x02 dlen 18 #5338 [hci0] 91.977373 Channel: 70 len 14 [PSM 3 mode Basic (0x00)] {chan 3} RFCOMM: Unnumbered Info with Header Check (UIH) (0xef) Address: 0x09 cr 0 dlci 0x02 Control: 0xff poll/final 1 Length: 9 FCS: 0x5c Credits: 4 41 54 2b 42 43 53 3d 32 0d 5c AT+BCS=3D2.\ > < ACL Data TX: Handle 2 flags 0x00 dlen 15 #5339 [hci0] 91.978294 Channel: 64 len 11 [PSM 3 mode Basic (0x00)] {chan 3} RFCOMM: Unnumbered Info with Header Check (UIH) (0xef) Address: 0x0b cr 1 dlci 0x02 Control: 0xff poll/final 1 Length: 6 FCS: 0x86 Credits: 1 0d 0a 4f 4b 0d 0a 86 ..OK... > < HCI Command: Enhanced.. (0x01|0x003d) plen 59 #5340 [hci0] 91.978326 Handle: 2 Transmit bandwidth: 8000 Receive bandwidth: 8000 Max latency: 13 Packet type: 0x0380 3-EV3 may not be used 2-EV5 may not be used 3-EV5 may not be used Retransmission effort: Optimize for link quality (0x02) > HCI Event: Command Status (0x0f) plen 4 #5341 [hci0] 91.981723 Enhanced Setup Synchronous Connection (0x01|0x003d) ncmd 2 Status: Success (0x00) > HCI Event: Number of Complete.. (0x13) plen 5 #5342 [hci0] 91.982705 Num handles: 1 Handle: 2 Count: 1 > HCI Event: Synchronous Conne.. (0x2c) plen 17 #5343 [hci0] 92.015758 Status: Success (0x00) Handle: 3 Address: 78:A7:EB:4C:53:4D (OUI 78-A7-EB) Link type: eSCO (0x02) Transmission interval: 0x0c Retransmission window: 0x04 RX packet length: 60 TX packet length: 60 Air mode: Transparent (0x03) @ MGMT Open: bt_main_th.. (privileged) version 1.22 {0x0003} 92.016366 @ MGMT Command: Unknown (0x0101) plen 11 {0x0003} 92.016374 00 00 78 a7 eb 4c 53 4d 00 01 02 ..x..LSM... > @ MGMT Close: bt_main_thread {0x0003} 92.016409 < ACL Data TX: Handle 2 flags 0x00 dlen 22 #5344 [hci0] 92.017651 Channel: 64 len 18 [PSM 3 mode Basic (0x00)] {chan 3} RFCOMM: Unnumbered Info with Header Check (UIH) (0xef) Address: 0x0b cr 1 dlci 0x02 Control: 0xef poll/final 0 Length: 14 FCS: 0x9a 0d 0a 2b 43 49 45 56 3a 20 32 2c 32 0d 0a 9a ..+CIEV: 2,2..> ... > SCO Data RX: Handle 3 flags 0x00 dlen 60 #5349 [hci0] 92.037778 < SCO Data TX: Handle 3 flags 0x00 dlen 60 #5350 [hci0] 92.038218 > HCI Event: Max Slots Change (0x1b) plen 3 #5351 [hci0] 92.040758 Handle: 2 Max slots: 1 > HCI Event: Number of Complete.. (0x13) plen 5 #5352 [hci0] 92.041760 Num handles: 1 Handle: 2 Count: 1 > HCI Event: Number of Complete.. (0x13) plen 5 #5353 [hci0] 92.044784 Num handles: 1 Handle: 2 Count: 1 > SCO Data RX: Handle 3 flags 0x00 dlen 60 #5354 [hci0] 92.047706 < SCO Data TX: Handle 3 flags 0x00 dlen 60 #5355 [hci0] 92.048226 > SCO Data RX: Handle 3 flags 0x00 dlen 60 #5356 [hci0] 92.057706 < SCO Data TX: Handle 3 flags 0x00 dlen 60 #5357 [hci0] 92.058179 ... > SCO Data RX: Handle 3 flags 0x00 dlen 60 #5362 [hci0] 92.067775 > SCO Data RX: Handle 3 flags 0x00 dlen 60 #5363 [hci0] 92.067780 < SCO Data TX: Handle 3 flags 0x00 dlen 60 #5364 [hci0] 92.068288 < SCO Data TX: Handle 3 flags 0x00 dlen 60 #5365 [hci0] 92.068322 > SCO Data RX: Handle 3 flags 0x00 dlen 60 #5366 [hci0] 92.077733 < SCO Data TX: Handle 3 flags 0x00 dlen 60 #5367 [hci0] 92.078263 Signed-off-by: Alex Lu Signed-off-by: Hilda Wu --- Change: v2: Use btusb_find_altsetting replace duplicating logic, add tested log. --- --- drivers/bluetooth/btrtl.c | 3 ++ drivers/bluetooth/btrtl.h | 1 + drivers/bluetooth/btusb.c | 82 +++++++++++++++++++++++++++++---------- 3 files changed, 66 insertions(+), 20 deletions(-) diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 83025f457ca0..7efd733f9e84 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 279fe6c115fa..0a2107baf18a 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -814,6 +814,7 @@ 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_ISOC_ALT_CHANGED 18 =20 struct btusb_data { struct hci_dev *hdev; @@ -866,6 +867,7 @@ struct btusb_data { unsigned int air_mode; bool usb_alt6_packet_flow; int isoc_altsetting; + u16 isoc_mps; int suspend_count; =20 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); @@ -2140,16 +2142,58 @@ 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 btusb_find_altsetting(data, 5); + if (alt) { + data->isoc_mps =3D 49; + for (i =3D 0; i < alt->desc.bNumEndpoints; i++) { + ep_desc =3D &alt->endpoint[i].desc; + if (!usb_endpoint_xfer_isoc(ep_desc)) + continue; + data->isoc_mps =3D + le16_to_cpu(ep_desc->wMaxPacketSize); + ep_desc->wMaxPacketSize =3D cpu_to_le16(63); + } + alt->desc.bAlternateSetting =3D 6; + set_bit(BTUSB_ISOC_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); @@ -2161,6 +2205,22 @@ 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_ISOC_ALT_CHANGED, &data->flags)) { + alt =3D btusb_find_altsetting(data, 6); + if (alt) { + for (i =3D 0; i < alt->desc.bNumEndpoints; i++) { + ep_desc =3D &alt->endpoint[i].desc; + if (!usb_endpoint_xfer_isoc(ep_desc)) + continue; + ep_desc->wMaxPacketSize =3D + cpu_to_le16(data->isoc_mps); + } + alt->desc.bAlternateSetting =3D 5; + clear_bit(BTUSB_ISOC_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 @@ -2223,25 +2283,6 @@ 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); @@ -2279,7 +2320,8 @@ 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