From patchwork Thu Sep 29 11:44:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hilda Wu X-Patchwork-Id: 611907 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEF13C433FE for ; Thu, 29 Sep 2022 11:44:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235405AbiI2Los (ORCPT ); Thu, 29 Sep 2022 07:44:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235323AbiI2Lor (ORCPT ); Thu, 29 Sep 2022 07:44:47 -0400 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D5A962F669; Thu, 29 Sep 2022 04:44:42 -0700 (PDT) Authenticated-By: X-SpamFilter-By: ArmorX SpamTrap 5.77 with qID 28TBi7Q31024866, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtexh36505.realtek.com.tw[172.21.6.25]) by rtits2.realtek.com.tw (8.15.2/2.81/5.90) with ESMTPS id 28TBi7Q31024866 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Thu, 29 Sep 2022 19:44:07 +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_128_GCM_SHA256) id 15.1.2375.31; Thu, 29 Sep 2022 19:44:32 +0800 Received: from localhost.localdomain (172.21.132.192) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Thu, 29 Sep 2022 19:44:31 +0800 From: To: CC: , , , , , , , , Subject: [PATCH v3 1/3] Bluetooth: btrtl: Add btrealtek data struct Date: Thu, 29 Sep 2022 19:44:24 +0800 Message-ID: <20220929114426.4413-2-hildawu@realtek.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220929114426.4413-1-hildawu@realtek.com> References: <20220929114426.4413-1-hildawu@realtek.com> MIME-Version: 1.0 X-Originating-IP: [172.21.132.192] X-ClientProxiedBy: RTEXH36504.realtek.com.tw (172.21.6.27) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-KSE-ServerInfo: RTEXMBS04.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: trusted connection X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 09/29/2022 11:15:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: =?big5_tw?b?Q2xlYW4sIGJhc2VzOiAyMDIyLzkvMjkgpFekyCAwODo1?= =?big5_tw?b?NjowMA==?= X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-KSE-ServerInfo: RTEXH36505.realtek.com.tw, 9 X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Hilda Wu This patch adds a data structure for btrealtek object, and the definition of vendor behavior flags. It also adds macros to set/test/get the flags. Signed-off-by: Hilda Wu --- Changes in v3: - Update private flag. Changes in v2: - Set the proper priv_size to hci_alloc_dev_priv(). - Separate commits for functions. --- --- drivers/bluetooth/btrtl.h | 21 +++++++++++++++++++++ drivers/bluetooth/btusb.c | 3 +++ 2 files changed, 24 insertions(+) diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h index 2c441bda390a..ebf0101c959b 100644 --- a/drivers/bluetooth/btrtl.h +++ b/drivers/bluetooth/btrtl.h @@ -47,6 +47,27 @@ struct rtl_vendor_config { struct rtl_vendor_config_entry entry[]; } __packed; +enum { + REALTEK_ALT6_CONTINUOUS_TX_CHIP, + + __REALTEK_NUM_FLAGS, +}; + +struct btrealtek_data { + DECLARE_BITMAP(flags, __REALTEK_NUM_FLAGS); +}; + +#define btrealtek_set_flag(hdev, nr) \ + do { \ + struct btrealtek_data *realtek = hci_get_priv((hdev)); \ + set_bit((nr), realtek->flags); \ + } while (0) + +#define btrealtek_get_flag(hdev) \ + (((struct btrealtek_data *)hci_get_priv(hdev))->flags) + +#define btrealtek_test_flag(hdev, nr) test_bit((nr), btrealtek_get_flag(hdev)) + #if IS_ENABLED(CONFIG_BT_RTL) struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index c3daba17de7f..4c3aed89ff05 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3749,6 +3749,9 @@ static int btusb_probe(struct usb_interface *intf, /* Override the rx handlers */ data->recv_event = btusb_recv_event_intel; data->recv_bulk = btusb_recv_bulk_intel; + } else if (id->driver_info & BTUSB_REALTEK) { + /* Allocate extra space for Realtek device */ + priv_size += sizeof(struct btrealtek_data); } data->recv_acl = hci_recv_frame; From patchwork Thu Sep 29 11:44:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hilda Wu X-Patchwork-Id: 610667 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23CAFC433F5 for ; Thu, 29 Sep 2022 11:44:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234708AbiI2Lot (ORCPT ); Thu, 29 Sep 2022 07:44:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234931AbiI2Lor (ORCPT ); Thu, 29 Sep 2022 07:44:47 -0400 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E9DE532DA6; Thu, 29 Sep 2022 04:44:42 -0700 (PDT) Authenticated-By: X-SpamFilter-By: ArmorX SpamTrap 5.77 with qID 28TBi7Ek9024871, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtexh36504.realtek.com.tw[172.21.6.27]) by rtits2.realtek.com.tw (8.15.2/2.81/5.90) with ESMTPS id 28TBi7Ek9024871 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Thu, 29 Sep 2022 19:44:07 +0800 Received: from RTEXMBS04.realtek.com.tw (172.21.6.97) by RTEXH36504.realtek.com.tw (172.21.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Thu, 29 Sep 2022 19:44:33 +0800 Received: from localhost.localdomain (172.21.132.192) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Thu, 29 Sep 2022 19:44:32 +0800 From: To: CC: , , , , , , , , Subject: [PATCH v3 2/3] Bluetooth: btusb: Workaround for spotty SCO quality Date: Thu, 29 Sep 2022 19:44:25 +0800 Message-ID: <20220929114426.4413-3-hildawu@realtek.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220929114426.4413-1-hildawu@realtek.com> References: <20220929114426.4413-1-hildawu@realtek.com> MIME-Version: 1.0 X-Originating-IP: [172.21.132.192] X-ClientProxiedBy: RTEXH36504.realtek.com.tw (172.21.6.27) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-KSE-ServerInfo: RTEXMBS04.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: trusted connection X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 09/29/2022 11:15:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: =?big5_tw?b?Q2xlYW4sIGJhc2VzOiAyMDIyLzkvMjkgpFekyCAwODo1?= =?big5_tw?b?NjowMA==?= X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-KSE-ServerInfo: RTEXH36504.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: fallback X-KSE-Antivirus-Interceptor-Info: fallback X-KSE-AntiSpam-Interceptor-Info: fallback Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Hilda Wu When streaming HFP, once a few minutes a brief pause in audio can be heard on some platform with Realtek Bluetooth. When the issue occurs, the system will see the SCO packet for unknown connection handle messages. Note: This issue affects (e)SCO only, does not affect ACLs. Because the duplicate packet causing the problem only occurs in Realtek BT. This is to filter out duplicate packet for avoiding influence. Signed-off-by: Alex Lu Signed-off-by: Hilda Wu --- Changes in v3: - Use the vendor function to replace btus_recv_isoc - Additional info: The comparison of btrtl_usb_recv_isoc here is for invalid handle, the invalid handle shouldn't appear. So we try to find out the rule and filter out this. Changes in v2: - Seperate commits for functions --- --- drivers/bluetooth/btrtl.c | 27 ++++++++++++++ drivers/bluetooth/btrtl.h | 8 ++++ drivers/bluetooth/btusb.c | 77 ++++++++++++++++++++++++++++++++++++++- 3 files changed, 111 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index fb52313a1d45..272f90621a10 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -937,6 +937,33 @@ int btrtl_get_uart_settings(struct hci_dev *hdev, } EXPORT_SYMBOL_GPL(btrtl_get_uart_settings); +int btrtl_usb_recv_isoc(u16 pos, u8 *data, u8 *p, int len, + u16 wMaxPacketSize) +{ + u8 *prev; + + if (pos >= HCI_SCO_HDR_SIZE && pos >= wMaxPacketSize && + len == wMaxPacketSize && !(pos % wMaxPacketSize) && + wMaxPacketSize >= 10 && p[0] == data[0] && p[1] == data[1]) { + prev = data + (pos - wMaxPacketSize); + + /* Detect the sco data of usb isoc pkt duplication. */ + if (!memcmp(p + 2, prev + 2, 8)) + return -EILSEQ; + + if (wMaxPacketSize >= 12 && + p[2] == prev[6] && p[3] == prev[7] && + p[4] == prev[4] && p[5] == prev[5] && + p[6] == prev[10] && p[7] == prev[11] && + p[8] == prev[8] && p[9] == prev[9]) { + return -EILSEQ; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(btrtl_usb_recv_isoc); + MODULE_AUTHOR("Daniel Drake "); MODULE_DESCRIPTION("Bluetooth support for Realtek devices ver " VERSION); MODULE_VERSION(VERSION); diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h index ebf0101c959b..c9783e8fe0aa 100644 --- a/drivers/bluetooth/btrtl.h +++ b/drivers/bluetooth/btrtl.h @@ -83,6 +83,8 @@ int btrtl_get_uart_settings(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev, unsigned int *controller_baudrate, u32 *device_baudrate, bool *flow_control); +int btrtl_usb_recv_isoc(u16 pos, u8 *data, u8 *buffer, int len, + u16 wMaxPacketSize); #else @@ -126,4 +128,10 @@ static inline int btrtl_get_uart_settings(struct hci_dev *hdev, return -ENOENT; } +static inline int btrtl_usb_recv_isoc(u16 pos, u8 *data, u8 *buffer, int len, + u16 wMaxPacketSize) +{ + return -EOPNOTSUPP; +} + #endif diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 4c3aed89ff05..7583059e3b2c 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -683,6 +683,7 @@ struct btusb_data { int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb); int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); + int (*recv_isoc)(struct btusb_data *data, void *buffer, int count); int (*setup_on_usb)(struct hci_dev *hdev); @@ -1239,7 +1240,7 @@ static void btusb_isoc_complete(struct urb *urb) hdev->stat.byte_rx += length; - if (btusb_recv_isoc(data, urb->transfer_buffer + offset, + if (data->recv_isoc(data, urb->transfer_buffer + offset, length) < 0) { bt_dev_err(hdev, "corrupted SCO packet"); hdev->stat.err_rx++; @@ -2309,6 +2310,77 @@ static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) return -EILSEQ; } +static int btusb_recv_isoc_realtek(struct btusb_data *data, void *buffer, + int count) +{ + struct sk_buff *skb; + unsigned long flags; + int err = 0; + u16 wMaxPacketSize = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize); + + spin_lock_irqsave(&data->rxlock, flags); + skb = data->sco_skb; + + while (count) { + int len; + + if (!skb) { + skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); + if (!skb) { + err = -ENOMEM; + break; + } + + hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; + hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; + } + + len = min_t(uint, hci_skb_expect(skb), count); + + /* Gaps in audio could be heard while streaming WBS using USB + * alt settings 3 on some platforms, since this is only used + * with RTK chips so let vendor function detect it. + */ + if (!btusb_find_altsetting(data, 6) && + test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags)) { + err = btrtl_usb_recv_isoc(skb->len, skb->data, buffer, + len, wMaxPacketSize); + if (err) + break; + } + + skb_put_data(skb, buffer, len); + + count -= len; + buffer += len; + hci_skb_expect(skb) -= len; + + if (skb->len == HCI_SCO_HDR_SIZE) { + /* Complete SCO header */ + hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; + + if (skb_tailroom(skb) < hci_skb_expect(skb)) { + kfree_skb(skb); + skb = NULL; + + err = -EILSEQ; + break; + } + } + + if (!hci_skb_expect(skb)) { + /* Complete frame */ + hci_recv_frame(data->hdev, skb); + skb = NULL; + } + } + + data->sco_skb = skb; + spin_unlock_irqrestore(&data->rxlock, flags); + + return err; +} + /* UHW CR mapping */ #define MTK_BT_MISC 0x70002510 #define MTK_BT_SUBSYS_RST 0x70002610 @@ -3741,6 +3813,7 @@ static int btusb_probe(struct usb_interface *intf, data->recv_event = hci_recv_frame; data->recv_bulk = btusb_recv_bulk; + data->recv_isoc = btusb_recv_isoc; if (id->driver_info & BTUSB_INTEL_COMBINED) { /* Allocate extra space for Intel device */ @@ -3914,6 +3987,8 @@ static int btusb_probe(struct usb_interface *intf, hdev->shutdown = btrtl_shutdown_realtek; hdev->cmd_timeout = btusb_rtl_cmd_timeout; + data->recv_isoc = btusb_recv_isoc_realtek; + /* Realtek devices need to set remote wakeup on auto-suspend */ set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags); set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags); From patchwork Thu Sep 29 11:44:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hilda Wu X-Patchwork-Id: 611906 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3E19C43217 for ; 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Thu, 29 Sep 2022 19:44:33 +0800 Received: from localhost.localdomain (172.21.132.192) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Thu, 29 Sep 2022 19:44:32 +0800 From: To: CC: , , , , , , , , Subject: [PATCH v3 3/3] Bluetooth:btsub:Ignore zero length of USB packets on ALT 6 for specific chip Date: Thu, 29 Sep 2022 19:44:26 +0800 Message-ID: <20220929114426.4413-4-hildawu@realtek.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220929114426.4413-1-hildawu@realtek.com> References: <20220929114426.4413-1-hildawu@realtek.com> MIME-Version: 1.0 X-Originating-IP: [172.21.132.192] X-ClientProxiedBy: RTEXH36504.realtek.com.tw (172.21.6.27) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-KSE-ServerInfo: RTEXMBS04.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: trusted connection X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 09/29/2022 11:15:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: =?big5_tw?b?Q2xlYW4sIGJhc2VzOiAyMDIyLzkvMjkgpFekyCAwODo1?= =?big5_tw?b?NjowMA==?= X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-KSE-ServerInfo: RTEXH36505.realtek.com.tw, 9 X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Hilda Wu For USB ALT 6 settings some Realtek chips need to transmit mSBC data continuously without the zero length of USB packets. In this commit, create BTUSB_ALT6_CONTINUOUS_TX to manage the behavior. Therefore, create REALTEK_ALT6_CONTINUOUS_TX_CHIP to manage the specific chip model for the behavior. Signed-off-by: Max Chou Signed-off-by: Hilda Wu --- Changes in V3 - For ignore_usb_alt6_packet_flow, manage the common flag by the vendor private flag. --- --- drivers/bluetooth/btrtl.c | 7 +++++++ drivers/bluetooth/btusb.c | 25 +++++++++++++++++++++++-- 2 files changed, 30 insertions(+), 2 deletions(-) diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 272f90621a10..7159427c530e 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -781,6 +781,13 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev) case CHIP_ID_8852C: set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); + + /* RTL8852C needs to transmit mSBC data continuously without + * the zero length of USB packets for the ALT 6 supported chips + */ + if (btrtl_dev->project_id == CHIP_ID_8852C) + btrealtek_set_flag(hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP); + hci_set_aosp_capable(hdev); break; default: diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 7583059e3b2c..076cfee1ad57 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -626,6 +626,7 @@ static const struct dmi_system_id btusb_needs_reset_resume_table[] = { #define BTUSB_TX_WAIT_VND_EVT 13 #define BTUSB_WAKEUP_AUTOSUSPEND 14 #define BTUSB_USE_ALT3_FOR_WBS 15 +#define BTUSB_ALT6_CONTINUOUS_TX 16 struct btusb_data { struct hci_dev *hdev; @@ -1271,11 +1272,17 @@ static void btusb_isoc_complete(struct urb *urb) static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, int mtu, struct btusb_data *data) { - int i, offset = 0; + int i = 0, offset = 0; unsigned int interval; BT_DBG("len %d mtu %d", len, mtu); + /* For mSBC ALT 6 settings some chips need to transmit the data + * continuously without the zero length of USB packets. + */ + if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags)) + goto ignore_usb_alt6_packet_flow; + /* For mSBC ALT 6 setting the host will send the packet at continuous * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. @@ -1295,6 +1302,7 @@ static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, urb->iso_frame_desc[i].length = offset; } +ignore_usb_alt6_packet_flow: if (len && i < BTUSB_MAX_ISOC_FRAMES) { urb->iso_frame_desc[i].offset = offset; urb->iso_frame_desc[i].length = len; @@ -2381,6 +2389,19 @@ static int btusb_recv_isoc_realtek(struct btusb_data *data, void *buffer, return err; } +static int btusb_setup_realtek(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + int ret; + + ret = btrtl_setup_realtek(hdev); + + if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP)) + set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags); + + return ret; +} + /* UHW CR mapping */ #define MTK_BT_MISC 0x70002510 #define MTK_BT_SUBSYS_RST 0x70002610 @@ -3983,7 +4004,7 @@ static int btusb_probe(struct usb_interface *intf, if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && (id->driver_info & BTUSB_REALTEK)) { - hdev->setup = btrtl_setup_realtek; + hdev->setup = btusb_setup_realtek; hdev->shutdown = btrtl_shutdown_realtek; hdev->cmd_timeout = btusb_rtl_cmd_timeout;