Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-26 04:42:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

Bluetooth: btusb: driver to enable the usb-wakeup feature

Browse Source 
BT-Controller connected as platform non-root-hub device and
usb-driver initialize such device with wakeup disabled,
Ref. usb_new_device().

At present wakeup-capability get enabled by hid-input device from usb
function driver(e.g. BT HID device) at runtime. Again some functional
driver does not set usb-wakeup capability(e.g LE HID device implement
as HID-over-GATT), and can't wakeup the host on USB.

Most of the device operation (such as mass storage) initiated from host
(except HID) and USB wakeup aligned with host resume procedure. For BT
device, usb-wakeup capability need to enable form btusc driver as a
generic solution for multiple profile use case and required for USB remote
wakeup (in-bus wakeup) while host is suspended. Also usb-wakeup feature
need to enable/disable with HCI interface up and down.

Signed-off-by: Sukumar Ghorai <sukumar.ghorai@intel.com>
Signed-off-by: Amit K Bag <amit.k.bag@intel.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Sukumar Ghorai 2017-08-16 14:46:55 -07:00 committed by Marcel Holtmann
parent 9834e586fa
commit a0085f2510
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/bluetooth/btusb.c
View File

@ -1088,6 +1088,10 @@ static int btusb_open(struct hci_dev *hdev)
} }
data->intf->needs_remote_wakeup = 1; data->intf->needs_remote_wakeup = 1;
/* device specific wakeup source enabled and required for USB
* remote wakeup while host is suspended
*/
device_wakeup_enable(&data->udev->dev);
if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
goto done; goto done;
@ -1151,6 +1155,7 @@ static int btusb_close(struct hci_dev *hdev)
goto failed; goto failed;
data->intf->needs_remote_wakeup = 0; data->intf->needs_remote_wakeup = 0;
device_wakeup_disable(&data->udev->dev);
usb_autopm_put_interface(data->intf); usb_autopm_put_interface(data->intf);
failed: failed: