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| author | Bernhard Thaler <bernhard.thaler@r-it.at> | 2014-09-23 11:01:07 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-09-23 11:30:04 +0200 |
| commit | 48e68ff5e55af6907d3f90233e5c4d5601a628a6 (patch) | |
| tree | 097a24a5cee1a5cb7fcb65f651c1afac0406a28c /net | |
| parent | 5eb596f55cacc2389554a8d7572d90d5e9d4269d (diff) | |
| download | linux-48e68ff5e55af6907d3f90233e5c4d5601a628a6.tar.bz2 | |
Bluetooth: Check for SCO type before setting retransmission effort
SCO connection cannot be setup to devices that do not support retransmission.
Patch based on http://permalink.gmane.org/gmane.linux.bluez.kernel/7779 and
adapted for this kernel version.
Code changed to check SCO/eSCO type before setting retransmission effort
and max. latency. The purpose of the patch is to support older devices not
capable of eSCO.
Tested on Blackberry 655+ headset which does not support retransmission.
Credits go to Alexander Sommerhuber.
Signed-off-by: Bernhard Thaler <bernhard.thaler@r-it.at>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/hci_conn.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index e3d7ae9e2edd..22b253750f78 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -38,7 +38,7 @@ struct sco_param { u16 max_latency; }; -static const struct sco_param sco_param_cvsd[] = { +static const struct sco_param esco_param_cvsd[] = { { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a }, /* S3 */ { EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007 }, /* S2 */ { EDR_ESCO_MASK | ESCO_EV3, 0x0007 }, /* S1 */ @@ -46,6 +46,11 @@ static const struct sco_param sco_param_cvsd[] = { { EDR_ESCO_MASK | ESCO_HV1, 0xffff }, /* D0 */ }; +static const struct sco_param sco_param_cvsd[] = { + { EDR_ESCO_MASK | ESCO_HV3, 0xffff }, /* D1 */ + { EDR_ESCO_MASK | ESCO_HV1, 0xffff }, /* D0 */ +}; + static const struct sco_param sco_param_wideband[] = { { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000d }, /* T2 */ { EDR_ESCO_MASK | ESCO_EV3, 0x0008 }, /* T1 */ @@ -207,10 +212,17 @@ bool hci_setup_sync(struct hci_conn *conn, __u16 handle) param = &sco_param_wideband[conn->attempt - 1]; break; case SCO_AIRMODE_CVSD: - if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) - return false; - cp.retrans_effort = 0x01; - param = &sco_param_cvsd[conn->attempt - 1]; + if (lmp_esco_capable(conn->link)) { + if (conn->attempt > ARRAY_SIZE(esco_param_cvsd)) + return false; + cp.retrans_effort = 0x01; + param = &esco_param_cvsd[conn->attempt - 1]; + } else { + if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) + return false; + cp.retrans_effort = 0xff; + param = &sco_param_cvsd[conn->attempt - 1]; + } break; default: return false; |