[Bluetooth] Add basics to better support and handle eSCO links

To better support and handle eSCO links in the future a bunch of
constants needs to be added and some basic routines need to be
updated. This is the initial step.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

2 files changed, 18 insertions, 2 deletions

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 93ce272a5d27..ebfb96b41106 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -107,14 +107,14 @@ enum {
 #define HCI_IDLE_TIMEOUT        (6000)  /* 6 seconds */
 #define HCI_INIT_TIMEOUT        (10000) /* 10 seconds */
 
-/* HCI Packet types */
+/* HCI data types */
 #define HCI_COMMAND_PKT         0x01
 #define HCI_ACLDATA_PKT         0x02
 #define HCI_SCODATA_PKT         0x03
 #define HCI_EVENT_PKT           0x04
 #define HCI_VENDOR_PKT          0xff
 
-/* HCI Packet types */
+/* HCI packet types */
 #define HCI_DM1         0x0008
 #define HCI_DM3         0x0400
 #define HCI_DM5         0x4000
@@ -129,6 +129,14 @@ enum {
 #define SCO_PTYPE_MASK  (HCI_HV1 | HCI_HV2 | HCI_HV3)
 #define ACL_PTYPE_MASK  (~SCO_PTYPE_MASK)
 
+/* eSCO packet types */
+#define ESCO_HV1        0x0001
+#define ESCO_HV2        0x0002
+#define ESCO_HV3        0x0004
+#define ESCO_EV3        0x0008
+#define ESCO_EV4        0x0010
+#define ESCO_EV5        0x0020
+
 /* ACL flags */
 #define ACL_CONT                0x01
 #define ACL_START               0x02
@@ -138,6 +146,7 @@ enum {
 /* Baseband links */
 #define SCO_LINK        0x00
 #define ACL_LINK        0x01
+#define ESCO_LINK       0x02
 
 /* LMP features */
 #define LMP_3SLOT       0x01
@@ -162,6 +171,11 @@ enum {
 #define LMP_PSCHEME     0x02
 #define LMP_PCONTROL    0x04
 
+#define LMP_ESCO        0x80
+
+#define LMP_EV4         0x01
+#define LMP_EV5         0x02
+
 #define LMP_SNIFF_SUBR  0x02
 
 /* Connection modes */
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 7c78744ec0fd..8f67c8a7169b 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -78,6 +78,7 @@ struct hci_dev {
         __u16           voice_setting;
 
         __u16           pkt_type;
+        __u16           esco_type;
         __u16           link_policy;
         __u16           link_mode;
 
@@ -452,6 +453,7 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
+#define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 
 /* ----- HCI protocols ----- */
 struct hci_proto {