| Message ID | 20241126070542.3828431-1-hildawu@realtek.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v3] Bluetooth: add quirk using packet size 60 | expand |
Dear Hilda, Thank you for your patch. Some minor comments. It’d be great if you addad the chip model to the commit message summary/title. Am 26.11.24 um 08:05 schrieb Hilda Wu: > The RTL8852BE-VT supports USB alternate setting 6. Please add a blank line between paragraphs. > However, its descriptor does not report this capability to the host. Is that a firmware limitation? Is it going to be fixed in the future in other revisions? > Therefore, a quirk is needed to bypass the RTL8852BE-VT's descriptor > and allow it to use USB ALT 6 directly. Does Linux log the application of this quirk? > The btmon log below shows the case that WBS with the USB alternate > setting 6. > > < HCI Command: Enhanced.. (0x01|0x003d) plen 59 #2123 [hci0] 82.701813 > Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) > 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) > < ACL Data TX: Handle 1 flags 0x00 dlen 22 #2124 [hci0] 82.701825 > Channel: 65 len 18 [PSM 3 mode Basic (0x00)] {chan 1} > 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 31 0d 0a 9a ..+CIEV: 2,1..> >> HCI Event: Command Status (0x0f) plen 4 #2125 [hci0] 82.703812 > Enhanced Setup Synchronous Connection (0x01|0x003d) ncmd 2 > Status: Success (0x00) >> HCI Event: Number of Complete.. (0x13) plen 5 #2126 [hci0] 82.710834 > Num handles: 1 > Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) > Count: 1 > #2124: len 22 (19 Kb/s) > Latency: 9 msec (3-56 msec ~13 msec) > Channel: 65 [PSM 3 mode Basic (0x00)] {chan 1} > Channel Latency: 9 msec (4-27 msec ~15 msec) >> HCI Event: Synchronous Conne.. (0x2c) plen 17 #2127 [hci0] 82.741840 > Status: Success (0x00) > Handle: 2 > Address: 78:A7:EB:4C:53:4D (1MORE) > Link type: eSCO (0x02) > Transmission interval: 0x0c > Retransmission window: 0x04 > RX packet length: 60 > TX packet length: 60 > Air mode: Transparent (0x03) > @ RAW Open: btmon (privileged) version 2.22 {0x0002} 82.742580 > @ RAW Close: btmon {0x0002} 82.742594 >> SCO Data RX: Handle 2 flags 0x00 dlen 60 #2128 [hci0] 82.764812 > < ACL Data TX: Handle 1 flags 0x00 dlen 19 #2129 [hci0] 82.764994 > Channel: 65 len 15 [PSM 3 mode Basic (0x00)] {chan 1} > RFCOMM: Unnumbered Info with Header Check (UIH) (0xef) > Address: 0x0b cr 1 dlci 0x02 > Control: 0xef poll/final 0 > Length: 11 > FCS: 0x9a > 0d 0a 2b 56 47 53 3a 20 36 0d 0a 9a ..+VGS: 6... > >> HCI Event: Max Slots Change (0x1b) plen 3 #2130 [hci0] 82.765814 > Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) > Max slots: 1 > < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2131 [hci0] 82.765897 >> HCI Event: Number of Complete.. (0x13) plen 5 #2132 [hci0] 82.771855 > Num handles: 1 > Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) > Count: 1 > #2129: len 19 (25 Kb/s) > Latency: 6 msec (3-56 msec ~10 msec) > Channel: 65 [PSM 3 mode Basic (0x00)] {chan 1} > Channel Latency: 6 msec (4-27 msec ~11 msec) > < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2133 [hci0] 82.773344 >> SCO Data RX: Handle 2 flags 0x00 dlen 60 #2134 [hci0] 82.774836 >> SCO Data RX: Handle 2 flags 0x00 dlen 60 #2135 [hci0] 82.774839 >> SCO Data RX: Handle 2 flags 0x00 dlen 60 #2136 [hci0] 82.784840 > < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2137 [hci0] 82.787175 > < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2138 [hci0] 82.788282 >> SCO Data RX: Handle 2 flags 0x00 dlen 60 #2139 [hci0] 82.794812 > < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2140 [hci0] 82.795797 >> SCO Data RX: Handle 2 flags 0x00 dlen 60 #2141 [hci0] 82.804838 >> SCO Data RX: Handle 2 flags 0x00 dlen 60 #2142 [hci0] 82.804840 > < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2143 [hci0] 82.808554 > > Signed-off-by: Alex Lu <alex_lu@realsil.com.cn> > Signed-off-by: Hilda Wu <hildawu@realtek.com> > > --- > Change: > V3: Fixed SubjectPrefix, use quirk instead of btrealtek_*_flag() > 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 | 86 ++++++++++++++++++++++++++++++--------- > 3 files changed, 70 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 btrtl_device_info *btrtl_dev) > btrtl_dev->project_id == CHIP_ID_8852C) > set_bit(HCI_QUIRK_USE_MSFT_EXT_ADDRESS_FILTER, &hdev->quirks); > > + if (btrtl_dev->project_id == 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 { > > enum { > REALTEK_ALT6_CONTINUOUS_TX_CHIP, > + REALTEK_ALT6_FORCE, > > __REALTEK_NUM_FLAGS, > }; > diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c > index 279fe6c115fa..6acdff772ca5 100644 > --- a/drivers/bluetooth/btusb.c > +++ b/drivers/bluetooth/btusb.c > @@ -814,6 +814,8 @@ 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_ALT6_QUIRK 18 > +#define BTUSB_ISOC_ALT_CHANGED 19 What is BTUSB_ISOC_ALT_CHANGED needed for? For me it’d be great, if you mentioned it in the commit message. > struct btusb_data { > struct hci_dev *hdev; > @@ -866,6 +868,7 @@ struct btusb_data { > unsigned int air_mode; > bool usb_alt6_packet_flow; > int isoc_altsetting; > + u16 isoc_mps; What is mps? Add a comment? Why not unsigned int? > int suspend_count; > > int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); > @@ -2140,16 +2143,58 @@ static void btusb_notify(struct hci_dev *hdev, unsigned int evt) > } > } > > +static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, > + int alt) > +{ > + struct usb_interface *intf = data->isoc; > + int i; > + > + BT_DBG("Looking for Alt no :%d", alt); > + > + if (!intf) > + return NULL; > + > + for (i = 0; i < intf->num_altsetting; i++) { > + if (intf->altsetting[i].desc.bAlternateSetting == alt) > + return &intf->altsetting[i]; > + } > + > + return NULL; > +} > + > static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) > { > struct btusb_data *data = hci_get_drvdata(hdev); > struct usb_interface *intf = data->isoc; > struct usb_endpoint_descriptor *ep_desc; > + struct usb_host_interface *alt; > int i, err; > > if (!data->isoc) > return -ENODEV; > > + /* 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 == 6 && !btusb_find_altsetting(data, 6) && > + test_bit(BTUSB_ALT6_QUIRK, &data->flags)) { > + alt = btusb_find_altsetting(data, 5); > + if (alt) { > + data->isoc_mps = 49; > + for (i = 0; i < alt->desc.bNumEndpoints; i++) { > + ep_desc = &alt->endpoint[i].desc; > + if (!usb_endpoint_xfer_isoc(ep_desc)) > + continue; > + data->isoc_mps = > + le16_to_cpu(ep_desc->wMaxPacketSize); > + ep_desc->wMaxPacketSize = cpu_to_le16(63); > + } > + alt->desc.bAlternateSetting = 6; > + set_bit(BTUSB_ISOC_ALT_CHANGED, &data->flags); > + } > + } > + > err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); > if (err < 0) { > bt_dev_err(hdev, "setting interface failed (%d)", -err); > @@ -2161,6 +2206,22 @@ static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) > data->isoc_tx_ep = NULL; > data->isoc_rx_ep = NULL; > > + /* Recover alt 5 desc if alt 0 is set. */ Why? > + if (!altsetting && test_bit(BTUSB_ISOC_ALT_CHANGED, &data->flags)) { > + alt = btusb_find_altsetting(data, 6); > + if (alt) { > + for (i = 0; i < alt->desc.bNumEndpoints; i++) { > + ep_desc = &alt->endpoint[i].desc; > + if (!usb_endpoint_xfer_isoc(ep_desc)) > + continue; > + ep_desc->wMaxPacketSize = > + cpu_to_le16(data->isoc_mps); > + } > + alt->desc.bAlternateSetting = 5; > + clear_bit(BTUSB_ISOC_ALT_CHANGED, &data->flags); > + } > + } > + > for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { > ep_desc = &intf->cur_altsetting->endpoint[i].desc; > > @@ -2223,25 +2284,6 @@ static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) > return 0; > } > > -static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, > - int alt) > -{ > - struct usb_interface *intf = data->isoc; > - int i; > - > - BT_DBG("Looking for Alt no :%d", alt); > - > - if (!intf) > - return NULL; > - > - for (i = 0; i < intf->num_altsetting; i++) { > - if (intf->altsetting[i].desc.bAlternateSetting == alt) > - return &intf->altsetting[i]; > - } > - > - return NULL; > -} > - > static void btusb_work(struct work_struct *work) > { > struct btusb_data *data = container_of(work, struct btusb_data, work); > @@ -2279,7 +2321,8 @@ static void btusb_work(struct work_struct *work) > * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 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) || > + test_bit(BTUSB_ALT6_QUIRK, &data->flags)) > new_alts = 6; > else if (btusb_find_altsetting(data, 3) && > hdev->sco_mtu >= 72 && > @@ -2611,6 +2654,9 @@ static int btusb_setup_realtek(struct hci_dev *hdev) > if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP)) > set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags); > > + if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_FORCE)) > + set_bit(BTUSB_ALT6_QUIRK, &data->flags); > + > return ret; > } Kind regards, Paul
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 btrtl_device_info *btrtl_dev) btrtl_dev->project_id == CHIP_ID_8852C) set_bit(HCI_QUIRK_USE_MSFT_EXT_ADDRESS_FILTER, &hdev->quirks); + if (btrtl_dev->project_id == 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 { enum { REALTEK_ALT6_CONTINUOUS_TX_CHIP, + REALTEK_ALT6_FORCE, __REALTEK_NUM_FLAGS, }; diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 279fe6c115fa..6acdff772ca5 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -814,6 +814,8 @@ 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_ALT6_QUIRK 18 +#define BTUSB_ISOC_ALT_CHANGED 19 struct btusb_data { struct hci_dev *hdev; @@ -866,6 +868,7 @@ struct btusb_data { unsigned int air_mode; bool usb_alt6_packet_flow; int isoc_altsetting; + u16 isoc_mps; int suspend_count; int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); @@ -2140,16 +2143,58 @@ static void btusb_notify(struct hci_dev *hdev, unsigned int evt) } } +static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, + int alt) +{ + struct usb_interface *intf = data->isoc; + int i; + + BT_DBG("Looking for Alt no :%d", alt); + + if (!intf) + return NULL; + + for (i = 0; i < intf->num_altsetting; i++) { + if (intf->altsetting[i].desc.bAlternateSetting == alt) + return &intf->altsetting[i]; + } + + return NULL; +} + static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) { struct btusb_data *data = hci_get_drvdata(hdev); struct usb_interface *intf = data->isoc; struct usb_endpoint_descriptor *ep_desc; + struct usb_host_interface *alt; int i, err; if (!data->isoc) return -ENODEV; + /* 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 == 6 && !btusb_find_altsetting(data, 6) && + test_bit(BTUSB_ALT6_QUIRK, &data->flags)) { + alt = btusb_find_altsetting(data, 5); + if (alt) { + data->isoc_mps = 49; + for (i = 0; i < alt->desc.bNumEndpoints; i++) { + ep_desc = &alt->endpoint[i].desc; + if (!usb_endpoint_xfer_isoc(ep_desc)) + continue; + data->isoc_mps = + le16_to_cpu(ep_desc->wMaxPacketSize); + ep_desc->wMaxPacketSize = cpu_to_le16(63); + } + alt->desc.bAlternateSetting = 6; + set_bit(BTUSB_ISOC_ALT_CHANGED, &data->flags); + } + } + err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); if (err < 0) { bt_dev_err(hdev, "setting interface failed (%d)", -err); @@ -2161,6 +2206,22 @@ static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) data->isoc_tx_ep = NULL; data->isoc_rx_ep = NULL; + /* Recover alt 5 desc if alt 0 is set. */ + if (!altsetting && test_bit(BTUSB_ISOC_ALT_CHANGED, &data->flags)) { + alt = btusb_find_altsetting(data, 6); + if (alt) { + for (i = 0; i < alt->desc.bNumEndpoints; i++) { + ep_desc = &alt->endpoint[i].desc; + if (!usb_endpoint_xfer_isoc(ep_desc)) + continue; + ep_desc->wMaxPacketSize = + cpu_to_le16(data->isoc_mps); + } + alt->desc.bAlternateSetting = 5; + clear_bit(BTUSB_ISOC_ALT_CHANGED, &data->flags); + } + } + for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { ep_desc = &intf->cur_altsetting->endpoint[i].desc; @@ -2223,25 +2284,6 @@ static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) return 0; } -static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, - int alt) -{ - struct usb_interface *intf = data->isoc; - int i; - - BT_DBG("Looking for Alt no :%d", alt); - - if (!intf) - return NULL; - - for (i = 0; i < intf->num_altsetting; i++) { - if (intf->altsetting[i].desc.bAlternateSetting == alt) - return &intf->altsetting[i]; - } - - return NULL; -} - static void btusb_work(struct work_struct *work) { struct btusb_data *data = container_of(work, struct btusb_data, work); @@ -2279,7 +2321,8 @@ static void btusb_work(struct work_struct *work) * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 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) || + test_bit(BTUSB_ALT6_QUIRK, &data->flags)) new_alts = 6; else if (btusb_find_altsetting(data, 3) && hdev->sco_mtu >= 72 && @@ -2611,6 +2654,9 @@ static int btusb_setup_realtek(struct hci_dev *hdev) if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP)) set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags); + if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_FORCE)) + set_bit(BTUSB_ALT6_QUIRK, &data->flags); + return ret; }
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. < HCI Command: Enhanced.. (0x01|0x003d) plen 59 #2123 [hci0] 82.701813 Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) 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) < ACL Data TX: Handle 1 flags 0x00 dlen 22 #2124 [hci0] 82.701825 Channel: 65 len 18 [PSM 3 mode Basic (0x00)] {chan 1} 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 31 0d 0a 9a ..+CIEV: 2,1..> > HCI Event: Command Status (0x0f) plen 4 #2125 [hci0] 82.703812 Enhanced Setup Synchronous Connection (0x01|0x003d) ncmd 2 Status: Success (0x00) > HCI Event: Number of Complete.. (0x13) plen 5 #2126 [hci0] 82.710834 Num handles: 1 Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) Count: 1 #2124: len 22 (19 Kb/s) Latency: 9 msec (3-56 msec ~13 msec) Channel: 65 [PSM 3 mode Basic (0x00)] {chan 1} Channel Latency: 9 msec (4-27 msec ~15 msec) > HCI Event: Synchronous Conne.. (0x2c) plen 17 #2127 [hci0] 82.741840 Status: Success (0x00) Handle: 2 Address: 78:A7:EB:4C:53:4D (1MORE) Link type: eSCO (0x02) Transmission interval: 0x0c Retransmission window: 0x04 RX packet length: 60 TX packet length: 60 Air mode: Transparent (0x03) @ RAW Open: btmon (privileged) version 2.22 {0x0002} 82.742580 @ RAW Close: btmon {0x0002} 82.742594 > SCO Data RX: Handle 2 flags 0x00 dlen 60 #2128 [hci0] 82.764812 < ACL Data TX: Handle 1 flags 0x00 dlen 19 #2129 [hci0] 82.764994 Channel: 65 len 15 [PSM 3 mode Basic (0x00)] {chan 1} RFCOMM: Unnumbered Info with Header Check (UIH) (0xef) Address: 0x0b cr 1 dlci 0x02 Control: 0xef poll/final 0 Length: 11 FCS: 0x9a 0d 0a 2b 56 47 53 3a 20 36 0d 0a 9a ..+VGS: 6... > > HCI Event: Max Slots Change (0x1b) plen 3 #2130 [hci0] 82.765814 Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) Max slots: 1 < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2131 [hci0] 82.765897 > HCI Event: Number of Complete.. (0x13) plen 5 #2132 [hci0] 82.771855 Num handles: 1 Handle: 1 Address: 78:A7:EB:4C:53:4D (1MORE) Count: 1 #2129: len 19 (25 Kb/s) Latency: 6 msec (3-56 msec ~10 msec) Channel: 65 [PSM 3 mode Basic (0x00)] {chan 1} Channel Latency: 6 msec (4-27 msec ~11 msec) < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2133 [hci0] 82.773344 > SCO Data RX: Handle 2 flags 0x00 dlen 60 #2134 [hci0] 82.774836 > SCO Data RX: Handle 2 flags 0x00 dlen 60 #2135 [hci0] 82.774839 > SCO Data RX: Handle 2 flags 0x00 dlen 60 #2136 [hci0] 82.784840 < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2137 [hci0] 82.787175 < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2138 [hci0] 82.788282 > SCO Data RX: Handle 2 flags 0x00 dlen 60 #2139 [hci0] 82.794812 < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2140 [hci0] 82.795797 > SCO Data RX: Handle 2 flags 0x00 dlen 60 #2141 [hci0] 82.804838 > SCO Data RX: Handle 2 flags 0x00 dlen 60 #2142 [hci0] 82.804840 < SCO Data TX: Handle 2 flags 0x00 dlen 60 #2143 [hci0] 82.808554 Signed-off-by: Alex Lu <alex_lu@realsil.com.cn> Signed-off-by: Hilda Wu <hildawu@realtek.com> --- Change: V3: Fixed SubjectPrefix, use quirk instead of btrealtek_*_flag() 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 | 86 ++++++++++++++++++++++++++++++--------- 3 files changed, 70 insertions(+), 20 deletions(-)