Add support for HCI_Read_Local_Supported_Codecs_V2 and query codec
capabilities
snoop:
> HCI Event: Command Complete (0x0e) plen 20
Read Local Supported Codecs V2 (0x04|0x000d) ncmd 1
Status: Success (0x00)
Number of supported codecs: 7
Codec: u-law log (0x00)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: A-law log (0x01)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: CVSD (0x02)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: Transparent (0x03)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: Linear PCM (0x04)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: Reserved (0x08)
Logical Transport Type: 0x03
Codec supported over BR/EDR ACL
Codec supported over BR/EDR SCO and eSCO
Codec: mSBC (0x05)
Logical Transport Type: 0x03
Codec supported over BR/EDR ACL
Codec supported over BR/EDR SCO and eSCO
Number of vendor codecs: 0
......
< HCI Command: Read Local Suppor.. (0x04|0x000e) plen 7
Codec: mSBC (0x05)
Logical Transport Type: 0x00
Direction: Input (Host to Controller) (0x00)
> HCI Event: Command Complete (0x0e) plen 12
Read Local Supported Codec Capabilities (0x04|0x000e) ncmd 1
Status: Success (0x00)
Number of codec capabilities: 1
Capabilities #0:
00 00 11 15 02 33
Signed-off-by: Kiran K <kiran.k@xxxxxxxxx>
Signed-off-by: Chethan T N <chethan.tumkur.narayan@xxxxxxxxx>
Signed-off-by: Srivatsa Ravishankar <ravishankar.srivatsa@xxxxxxxxx>
---
* changes in v3:
No changes
* changes in v2:
add length check for event data before accessing
include/net/bluetooth/hci.h | 2 +
include/net/bluetooth/hci_core.h | 10 +++
net/bluetooth/hci_core.c | 4 +-
net/bluetooth/hci_event.c | 110 +++++++++++++++++++++++++++++++
4 files changed, 125 insertions(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index e3f7771fe84f..34eb9f4b027f 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -1314,6 +1314,8 @@ struct hci_rp_read_local_pairing_opts {
__u8 max_key_size;
} __packed;
+#define HCI_OP_READ_LOCAL_CODECS_V2 0x100d
+
#define HCI_OP_READ_LOCAL_CODEC_CAPS 0x100e
struct hci_op_read_local_codec_caps {
__u8 codec_id[5];
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 8f5f390363f5..2c19b02a805d 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1848,4 +1848,14 @@ void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
#define SCO_AIRMODE_CVSD 0x0000
#define SCO_AIRMODE_TRANSP 0x0003
+#define LOCAL_CODEC_ACL_MASK BIT(0)
+#define LOCAL_CODEC_SCO_MASK BIT(1)
+#define LOCAL_CODEC_CIS_MASK BIT(2)
+#define LOCAL_CODEC_BIS_MASK BIT(3)
+
+#define LOCAL_CODEC_ACL 0x00
+#define LOCAL_CODEC_SCO 0x01
+#define LOCAL_CODEC_CIS 0x02
+#define LOCAL_CODEC_BIS 0x03
+
#endif /* __HCI_CORE_H */
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 9419bbf55d90..fda7077d0d47 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -908,7 +908,9 @@ static int hci_init5_req(struct hci_request *req, unsigned long opt)
struct hci_dev *hdev = req->hdev;
/* Read local codec list if the HCI command is supported */
- if (hdev->commands[29] & 0x20)
+ if (hdev->commands[45] & 0x04)
+ hci_req_add(req, HCI_OP_READ_LOCAL_CODECS_V2, 0, NULL);
+ else if (hdev->commands[29] & 0x20)
hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL);
return 0;
}
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index a4b905a76c1b..7ca3535f30de 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -951,6 +951,112 @@ static void hci_cc_read_local_codecs(struct hci_dev *hdev,
}
}
+static void hci_cc_read_local_codecs_v2(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ __u8 num_codecs, transport;
+ struct hci_op_read_local_codec_caps caps;
+
+ if (skb->len < sizeof(caps))
+ return;
+
+ bt_dev_dbg(hdev, "status 0x%2.2x", skb->data[0]);
+
+ if (skb->data[0])
+ return;
+
+ /* enumerate standard codecs */
+ skb_pull(skb, 1);
+
+ if (skb->len < 1)
+ return;
+
+ num_codecs = skb->data[0];
+
+ bt_dev_info(hdev, "Number of standard codecs: %u", num_codecs);
+
+ skb_pull(skb, 1);
+
+ if (skb->len < (num_codecs * 2))
+ return;
+
+ while (num_codecs--) {
+ caps.codec_id[0] = skb->data[0];
+ transport = skb->data[1];
+ caps.direction = 0x00;
+
+ if (transport & LOCAL_CODEC_ACL_MASK) {
+ caps.transport = LOCAL_CODEC_ACL;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+
+ if (transport & LOCAL_CODEC_SCO_MASK) {
+ caps.transport = LOCAL_CODEC_SCO;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+
+ if (transport & LOCAL_CODEC_BIS_MASK) {
+ caps.transport = LOCAL_CODEC_BIS;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+
+ if (transport & LOCAL_CODEC_CIS_MASK) {
+ caps.transport = LOCAL_CODEC_CIS;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+
+ skb_pull(skb, 2);
+ }
+
+ /* enumerate vendor specific codecs */
+ if (skb->len < 1)
+ return;
+
+ num_codecs = skb->data[0];
+
+ skb_pull(skb, 1);
+
+ if (skb->len < (num_codecs * 5))
+ return;
+
+ bt_dev_info(hdev, "Number of vendor specific codecs: %u", num_codecs);
+
+ while (num_codecs--) {
+ caps.codec_id[0] = 0xFF;
+ memcpy(&caps.codec_id[1], skb->data, 4);
+ transport = skb->data[4];
+ caps.direction = 0x00;
+
+ if (transport & LOCAL_CODEC_ACL_MASK) {
+ caps.transport = LOCAL_CODEC_ACL;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+
+ if (transport & LOCAL_CODEC_SCO_MASK) {
+ caps.transport = LOCAL_CODEC_SCO;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+
+ if (transport & LOCAL_CODEC_BIS) {
+ caps.transport = LOCAL_CODEC_BIS;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+
+ if (transport & LOCAL_CODEC_CIS_MASK) {
+ caps.transport = LOCAL_CODEC_CIS;
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS, sizeof(caps),
+ &caps);
+ }
+ }
+}
+
static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_rp_read_clock *rp = (void *) skb->data;
@@ -3505,6 +3611,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
hci_cc_read_local_codecs(hdev, skb);
break;
+ case HCI_OP_READ_LOCAL_CODECS_V2:
+ hci_cc_read_local_codecs_v2(hdev, skb);
+ break;
+
case HCI_OP_READ_FLOW_CONTROL_MODE:
hci_cc_read_flow_control_mode(hdev, skb);
break;
--
2.17.1
