| Message ID | 20200512190924.2.Ibdf1535b0d4c63aaf337161a333b419d6d32c364@changeid (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Marcel Holtmann |
| Headers | show |
| Series | Bluetooth: Update LE scanning parameters for suspend | expand |
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index f6870e98faab2..6b45e31432a77 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -35,7 +35,7 @@ #define HCI_REQ_CANCELED 2 #define LE_SUSPEND_SCAN_WINDOW 0x0012 -#define LE_SUSPEND_SCAN_INTERVAL 0x0060 +#define LE_SUSPEND_SCAN_INTERVAL 0x0400 void hci_req_init(struct hci_request *req, struct hci_dev *hdev) {
When a device is suspended, it doesn't need to be as responsive to connection events. Increase the interval to 640ms (creating a duty cycle of roughly 1.75%) so that passive scanning uses much less power (vs previous duty cycle of 18.75%). The new window + interval combination has been tested to work with HID devices (which are currently the only devices capable of wake up). Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org> --- net/bluetooth/hci_request.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)