| Message ID | 1378469252-14909-1-git-send-email-jesse.sung@canonical.com |
|---|---|
| State | New |
| Headers | show |
On 09/06/2013 05:07 AM, Wen-chien Jesse Sung wrote: > BugLink: https://launchpad.net/bugs/1065400 > > There is an user space firmware loading tool which can be found at > http://marc.info/?l=linux-bluetooth&m=132039175324993&w=2 > > The supported firmware is in hcd format, which is a collection of > hci commands. The download process would be: > 1. reset command > 2. download command > 3. firmware image in hcd file > 4. reset command > > /sys/kernel/debug/usb/devices before loading firmware: > T: Bus=01 Lev=02 Prnt=02 Port=04 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 > D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 > P: Vendor=0a5c ProdID=21d3 Rev= 1.12 > S: Manufacturer=Broadcom Corp > S: Product=BCM43142A0 > S: SerialNumber=3859F9D6199A > C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr= 0mA > I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) > E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms > E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) > E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms > I: If#= 1 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) > E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms > I: If#= 1 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) > E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms > I: If#= 1 Alt= 3 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) > E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms > I: If#= 1 Alt= 4 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) > E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms > I: If#= 1 Alt= 5 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) > E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms > I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) > E: Ad=84(I) Atr=02(Bulk) MxPS= 32 Ivl=0ms > E: Ad=04(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms > I:* If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) > > /sys/kernel/debug/usb/devices after loading firmware: > T: Bus=01 Lev=02 Prnt=02 Port=04 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 > D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 > P: Vendor=0a5c ProdID=21d3 Rev= 1.12 > S: Manufacturer=Broadcom Corp > S: Product=BCM43142A0 > S: SerialNumber=3859F9D6199A > C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr= 0mA > I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb > E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms > E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms > I: If#= 1 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms > I: If#= 1 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms > I: If#= 1 Alt= 3 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms > I: If#= 1 Alt= 4 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms > I: If#= 1 Alt= 5 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms > I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) > E: Ad=84(I) Atr=02(Bulk) MxPS= 32 Ivl=0ms > E: Ad=04(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms > I:* If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) > > Signed-off-by: Wen-chien Jesse Sung <jesse.sung@canonical.com> > --- > drivers/bluetooth/btusb.c | 76 +++++++++++++++++++++++++++++++++++++++++++++-- > 1 file changed, 73 insertions(+), 3 deletions(-) > > diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c > index 8e16f0a..09117b8 100644 > --- a/drivers/bluetooth/btusb.c > +++ b/drivers/bluetooth/btusb.c > @@ -24,6 +24,7 @@ > #include <linux/module.h> > #include <linux/usb.h> > #include <linux/firmware.h> > +#include <linux/delay.h> > > #include <net/bluetooth/bluetooth.h> > #include <net/bluetooth/hci_core.h> > @@ -49,6 +50,7 @@ static struct usb_driver btusb_driver; > #define BTUSB_WRONG_SCO_MTU 0x40 > #define BTUSB_ATH3012 0x80 > #define BTUSB_INTEL 0x100 > +#define BTUSB_BCM_PATCHRAM 0x800 > > static struct usb_device_id btusb_table[] = { > /* Generic Bluetooth USB device */ > @@ -104,13 +106,13 @@ static struct usb_device_id btusb_table[] = { > { USB_DEVICE(0x0b05, 0x17b5) }, > { USB_DEVICE(0x04ca, 0x2003) }, > { USB_DEVICE(0x0489, 0xe042) }, > - { USB_DEVICE(0x413c, 0x8197) }, > + { USB_DEVICE(0x413c, 0x8197), .driver_info = BTUSB_BCM_PATCHRAM }, > > /* Foxconn - Hon Hai */ > - { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) }, > + { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), .driver_info = BTUSB_BCM_PATCHRAM }, > > /*Broadcom devices with vendor specific id */ > - { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, > + { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), .driver_info = BTUSB_BCM_PATCHRAM }, > > { } /* Terminating entry */ > }; > @@ -1324,6 +1326,71 @@ exit_mfg_deactivate: > return 0; > } > > +static int btusb_setup_patchram_packet(struct hci_dev *hdev, u16 opcode, u32 plen, const void *param) > +{ > + struct sk_buff *skb; > + > + skb = __hci_cmd_sync(hdev, opcode, plen, param, HCI_INIT_TIMEOUT); > + if (IS_ERR(skb)) > + return PTR_ERR(skb); > + kfree_skb(skb); > + return 0; > +} > + > +#define PATCHRAM_NAME_LEN 20 > + > +static int btusb_setup_patchram(struct hci_dev *hdev) > +{ > + struct btusb_data *data = hci_get_drvdata(hdev); > + struct usb_device *udev = data->udev; > + size_t pos = 0; > + int err = 0; > + char filename[PATCHRAM_NAME_LEN]; > + const struct firmware *fw; > + u8 val = 0x00; > + > + snprintf(filename, PATCHRAM_NAME_LEN, "fw-%04x_%04x.hcd", > + le16_to_cpu(udev->descriptor.idVendor), > + le16_to_cpu(udev->descriptor.idProduct)); > + if (request_firmware(&fw, (const char *) filename, &udev->dev) < 0) { > + BT_INFO("can't load firmware, may not work correctly"); > + return 0; > + } > + > + err = btusb_setup_patchram_packet(hdev, 0x0c03, 1, &val); > + if (err) > + goto out; > + > + err = btusb_setup_patchram_packet(hdev, 0xfc2e, 1, &val); > + if (err) > + goto out; > + > + msleep(1000); > + while (pos < fw->size) { > + size_t len; > + len = fw->data[pos + 2] + 3; > + if (pos + len > fw->size) { > + err = -EINVAL; > + goto out; > + } > + err = btusb_setup_patchram_packet(hdev, le16_to_cpu(*(u16*)(fw->data + pos)), > + fw->data[pos + 2] , &fw->data[pos + 3]); > + if (err) > + goto out; > + pos += len; > + } > + > + err = btusb_setup_patchram_packet(hdev, 0x0c03, 1, &val); > +out: > + release_firmware(fw); > + if (err) { > + BT_INFO("fail to load firmware"); > + return err; > + } > + BT_INFO("firmware loaded"); > + return 0; > +} > + > static int btusb_probe(struct usb_interface *intf, > const struct usb_device_id *id) > { > @@ -1432,6 +1499,9 @@ static int btusb_probe(struct usb_interface *intf, > if (id->driver_info & BTUSB_INTEL) > hdev->setup = btusb_setup_intel; > > + if (id->driver_info & BTUSB_BCM_PATCHRAM) > + hdev->setup = btusb_setup_patchram; > + > /* Interface numbers are hardcoded in the specification */ > data->isoc = usb_ifnum_to_if(data->udev, 1); > > Does this patch set suffer from the same 'use hci_send_cmd instead of usb_control_msg' deficiency as was just proposed for Quantal/Raring ? rtg
2013/9/6 Tim Gardner <tim.gardner@canonical.com>: > Does this patch set suffer from the same 'use hci_send_cmd instead of > usb_control_msg' deficiency as was just proposed for Quantal/Raring ? No, it doesn't. Sending via HCI instead of usb_control_msg is safer. When 3.10 is released, support for Intel 7260 bluetooth is merged. It also sends its firmware via HCI. So some helper functions like __hci_cmd_sync() and __hci_cmd_sync_ev() are introduced for waiting the reply from bt module, to make sure that these commands are really received by hardware and to be able to get the data bt module replied. That's the main purpose of the previous pull request - to pull __hci_cmd_sync() stuffs in. Since we don't have these helper functions in quantal and raring, hci_send_cmd() is used instead to replace usb_control_msg() calls. Saucy is based on 3.11, so this patch uses __hci_cmd_sync() directly. Thanks, Jesse
So what is the story with this patchram stuff ? Is it ever gonna get upstream ?
2013/9/7 Tim Gardner <tim.gardner@canonical.com>: > So what is the story with this patchram stuff ? Is it ever gonna get > upstream ? Still working on it... :) http://marc.info/?t=137165589300006&r=1&w=2 Thanks, Jesse
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 8e16f0a..09117b8 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -24,6 +24,7 @@ #include <linux/module.h> #include <linux/usb.h> #include <linux/firmware.h> +#include <linux/delay.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> @@ -49,6 +50,7 @@ static struct usb_driver btusb_driver; #define BTUSB_WRONG_SCO_MTU 0x40 #define BTUSB_ATH3012 0x80 #define BTUSB_INTEL 0x100 +#define BTUSB_BCM_PATCHRAM 0x800 static struct usb_device_id btusb_table[] = { /* Generic Bluetooth USB device */ @@ -104,13 +106,13 @@ static struct usb_device_id btusb_table[] = { { USB_DEVICE(0x0b05, 0x17b5) }, { USB_DEVICE(0x04ca, 0x2003) }, { USB_DEVICE(0x0489, 0xe042) }, - { USB_DEVICE(0x413c, 0x8197) }, + { USB_DEVICE(0x413c, 0x8197), .driver_info = BTUSB_BCM_PATCHRAM }, /* Foxconn - Hon Hai */ - { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) }, + { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), .driver_info = BTUSB_BCM_PATCHRAM }, /*Broadcom devices with vendor specific id */ - { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, + { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), .driver_info = BTUSB_BCM_PATCHRAM }, { } /* Terminating entry */ }; @@ -1324,6 +1326,71 @@ exit_mfg_deactivate: return 0; } +static int btusb_setup_patchram_packet(struct hci_dev *hdev, u16 opcode, u32 plen, const void *param) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, opcode, plen, param, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + kfree_skb(skb); + return 0; +} + +#define PATCHRAM_NAME_LEN 20 + +static int btusb_setup_patchram(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + struct usb_device *udev = data->udev; + size_t pos = 0; + int err = 0; + char filename[PATCHRAM_NAME_LEN]; + const struct firmware *fw; + u8 val = 0x00; + + snprintf(filename, PATCHRAM_NAME_LEN, "fw-%04x_%04x.hcd", + le16_to_cpu(udev->descriptor.idVendor), + le16_to_cpu(udev->descriptor.idProduct)); + if (request_firmware(&fw, (const char *) filename, &udev->dev) < 0) { + BT_INFO("can't load firmware, may not work correctly"); + return 0; + } + + err = btusb_setup_patchram_packet(hdev, 0x0c03, 1, &val); + if (err) + goto out; + + err = btusb_setup_patchram_packet(hdev, 0xfc2e, 1, &val); + if (err) + goto out; + + msleep(1000); + while (pos < fw->size) { + size_t len; + len = fw->data[pos + 2] + 3; + if (pos + len > fw->size) { + err = -EINVAL; + goto out; + } + err = btusb_setup_patchram_packet(hdev, le16_to_cpu(*(u16*)(fw->data + pos)), + fw->data[pos + 2] , &fw->data[pos + 3]); + if (err) + goto out; + pos += len; + } + + err = btusb_setup_patchram_packet(hdev, 0x0c03, 1, &val); +out: + release_firmware(fw); + if (err) { + BT_INFO("fail to load firmware"); + return err; + } + BT_INFO("firmware loaded"); + return 0; +} + static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id) { @@ -1432,6 +1499,9 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_INTEL) hdev->setup = btusb_setup_intel; + if (id->driver_info & BTUSB_BCM_PATCHRAM) + hdev->setup = btusb_setup_patchram; + /* Interface numbers are hardcoded in the specification */ data->isoc = usb_ifnum_to_if(data->udev, 1);
BugLink: https://launchpad.net/bugs/1065400 There is an user space firmware loading tool which can be found at http://marc.info/?l=linux-bluetooth&m=132039175324993&w=2 The supported firmware is in hcd format, which is a collection of hci commands. The download process would be: 1. reset command 2. download command 3. firmware image in hcd file 4. reset command /sys/kernel/debug/usb/devices before loading firmware: T: Bus=01 Lev=02 Prnt=02 Port=04 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0a5c ProdID=21d3 Rev= 1.12 S: Manufacturer=Broadcom Corp S: Product=BCM43142A0 S: SerialNumber=3859F9D6199A C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=84(I) Atr=02(Bulk) MxPS= 32 Ivl=0ms E: Ad=04(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) /sys/kernel/debug/usb/devices after loading firmware: T: Bus=01 Lev=02 Prnt=02 Port=04 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0a5c ProdID=21d3 Rev= 1.12 S: Manufacturer=Broadcom Corp S: Product=BCM43142A0 S: SerialNumber=3859F9D6199A C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=84(I) Atr=02(Bulk) MxPS= 32 Ivl=0ms E: Ad=04(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) Signed-off-by: Wen-chien Jesse Sung <jesse.sung@canonical.com> --- drivers/bluetooth/btusb.c | 76 +++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 73 insertions(+), 3 deletions(-)