Re: [PATCH v11 06/10] Bluetooth: Allow setting of codec for HFP offload usecase

For HFP offload usecase, controller needs to be configured
with codec data and capabilities. This patch uses Bluetooth
SIG defined command HCI_CONFIGURE_DATA_PATH to specify vendor
specific data and allows userspace modules to set the codec
via setsockopt systemcall.

Signed-off-by: Kiran K <redacted>
Reviewed-by: Chethan T N <redacted>
Reviewed-by: Srivatsa Ravishankar <redacted>
---
* changes in v11:
 - Remove changes related to Kconfig
* changes in v10:
 - patch refactor - having callback definition and usage in the same patch

include/net/bluetooth/bluetooth.h |   2 +
include/net/bluetooth/hci.h       |   8 ++
include/net/bluetooth/hci_core.h  |   3 +
net/bluetooth/sco.c               | 118 ++++++++++++++++++++++++++++++
4 files changed, 131 insertions(+)

diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 64cddff0c9c4..1a48b6732eef 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h

@@ -173,6 +173,8 @@ struct bt_codecs {

	struct bt_codec	codecs[];
} __packed;

+#define CODING_FORMAT_CVSD	0x02
+
__printf(1, 2)
void bt_info(const char *fmt, ...);
__printf(1, 2)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 22e872e60ff8..c998607fc517 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h

@@ -1250,6 +1250,14 @@ struct hci_rp_read_local_oob_ext_data {

	__u8     rand256[16];
} __packed;

+#define HCI_CONFIGURE_DATA_PATH	0x0c83
+struct hci_op_configure_data_path {
+	__u8	direction;
+	__u8	data_path_id;
+	__u8	vnd_len;
+	__u8	vnd_data[];
+} __packed;
+
#define HCI_OP_READ_LOCAL_VERSION	0x1001
struct hci_rp_read_local_version {
	__u8     status;

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 71c409c8ab34..eafa6f8114cb 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h

@@ -618,6 +618,9 @@ struct hci_dev {

	void (*cmd_timeout)(struct hci_dev *hdev);
	bool (*prevent_wake)(struct hci_dev *hdev);
	int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
+	int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
+				     struct bt_codec *codec, __u8 *vnd_len,
+				     __u8 **vnd_data);