In order to establish a transparent SCO connection, the correct settings must
be specified in the Setup Synchronous Connection request. For that,
voice_setting is added to ACL connection flags to set up the desired
parameters. If this value is zero, a legacy SCO connection will be requested.
This patch uses T2 settings.
---
include/net/bluetooth/hci_core.h | 1 +
net/bluetooth/hci_conn.c | 19 +++++++++++++++----
2 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 69785c2..70e0364 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -328,6 +328,7 @@ struct hci_conn {
__u32 passkey_notify;
__u8 passkey_entered;
__u16 disc_timeout;
+ __u16 voice_setting;
unsigned long flags;
__u8 remote_cap;
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index ad551e2..95c69a6 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -175,13 +175,22 @@ void hci_setup_sync(struct hci_conn *conn, __u16 handle)
conn->attempt++;
cp.handle = cpu_to_le16(handle);
- cp.pkt_type = cpu_to_le16(conn->pkt_type);
cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40);
cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40);
- cp.max_latency = __constant_cpu_to_le16(0xffff);
- cp.voice_setting = cpu_to_le16(hdev->voice_setting);
- cp.retrans_effort = 0xff;
+
+ if (conn->voice_setting == 0x0003) {
+ cp.pkt_type = __constant_cpu_to_le16(EDR_ESCO_MASK &
+ ~ESCO_2EV3);
+ cp.max_latency = __constant_cpu_to_le16(0x000d);
+ cp.voice_setting = __constant_cpu_to_le16(0x0003);
+ cp.retrans_effort = 0x02;
+ } else {
+ cp.pkt_type = cpu_to_le16(conn->pkt_type);
+ cp.max_latency = __constant_cpu_to_le16(0xffff);
+ cp.voice_setting = cpu_to_le16(hdev->voice_setting);
+ cp.retrans_effort = 0xff;
+ }
hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp);
}
@@ -575,6 +584,8 @@ struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
hci_conn_hold(sco);
+ sco->voice_setting = voice_setting;
+
if (acl->state == BT_CONNECTED &&
(sco->state == BT_OPEN || sco->state == BT_CLOSED)) {
set_bit(HCI_CONN_POWER_SAVE, &acl->flags);
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
