From: Kiran K <kiran.k@intel.com>
Date: Tue, 7 Sep 2021 15:42:38 +0530
Subject: Bluetooth: Add support for Read Local Supported Codecs V2
Patch-mainline: v5.16-rc1
Git-commit: 9ae664028a9ea838827d6c4bc3428bdd9105f138
References: jsc#PED-1407
Use V2 version of read local supported command is controller
supports
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@intel.com>
Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Signed-off-by: Srivatsa Ravishankar <ravishankar.srivatsa@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
include/net/bluetooth/hci.h | 29 +++++++++++++++++++
net/bluetooth/hci_codec.c | 66 ++++++++++++++++++++++++++++++++++++++++++++
net/bluetooth/hci_codec.h | 1
net/bluetooth/hci_core.c | 4 ++
4 files changed, 99 insertions(+), 1 deletion(-)
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -1338,6 +1338,35 @@ struct hci_rp_read_local_pairing_opts {
__u8 max_key_size;
} __packed;
+#define HCI_OP_READ_LOCAL_CODECS_V2 0x100d
+struct hci_std_codec_v2 {
+ __u8 id;
+ __u8 transport;
+} __packed;
+
+struct hci_std_codecs_v2 {
+ __u8 num;
+ struct hci_std_codec_v2 codec[];
+} __packed;
+
+struct hci_vnd_codec_v2 {
+ __u8 id;
+ __le16 cid;
+ __le16 vid;
+ __u8 transport;
+} __packed;
+
+struct hci_vnd_codecs_v2 {
+ __u8 num;
+ struct hci_vnd_codec_v2 codec[];
+} __packed;
+
+struct hci_rp_read_local_supported_codecs_v2 {
+ __u8 status;
+ struct hci_std_codecs_v2 std_codecs;
+ struct hci_vnd_codecs_v2 vendor_codecs;
+} __packed;
+
#define HCI_OP_READ_LOCAL_CODEC_CAPS 0x100e
struct hci_op_read_local_codec_caps {
__u8 id;
--- a/net/bluetooth/hci_codec.c
+++ b/net/bluetooth/hci_codec.c
@@ -170,3 +170,69 @@ void hci_read_supported_codecs(struct hc
error:
kfree_skb(skb);
}
+
+void hci_read_supported_codecs_v2(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct hci_rp_read_local_supported_codecs_v2 *rp;
+ struct hci_std_codecs_v2 *std_codecs;
+ struct hci_vnd_codecs_v2 *vnd_codecs;
+ struct hci_op_read_local_codec_caps caps;
+ __u8 i;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_CODECS_V2, 0, NULL,
+ HCI_CMD_TIMEOUT);
+
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Failed to read local supported codecs (%ld)",
+ PTR_ERR(skb));
+ return;
+ }
+
+ if (skb->len < sizeof(*rp))
+ goto error;
+
+ rp = (void *)skb->data;
+
+ if (rp->status)
+ goto error;
+
+ skb_pull(skb, sizeof(rp->status));
+
+ std_codecs = (void *)skb->data;
+
+ /* check for payload data length before accessing */
+ if (skb->len < flex_array_size(std_codecs, codec, std_codecs->num)
+ + sizeof(std_codecs->num))
+ goto error;
+
+ memset(&caps, 0, sizeof(caps));
+
+ for (i = 0; i < std_codecs->num; i++) {
+ caps.id = std_codecs->codec[i].id;
+ hci_read_codec_capabilities(hdev, std_codecs->codec[i].transport,
+ &caps);
+ }
+
+ skb_pull(skb, flex_array_size(std_codecs, codec, std_codecs->num)
+ + sizeof(std_codecs->num));
+
+ vnd_codecs = (void *)skb->data;
+
+ /* check for payload data length before accessing */
+ if (skb->len <
+ flex_array_size(vnd_codecs, codec, vnd_codecs->num)
+ + sizeof(vnd_codecs->num))
+ goto error;
+
+ for (i = 0; i < vnd_codecs->num; i++) {
+ caps.id = 0xFF;
+ caps.cid = vnd_codecs->codec[i].cid;
+ caps.vid = vnd_codecs->codec[i].vid;
+ hci_read_codec_capabilities(hdev, vnd_codecs->codec[i].transport,
+ &caps);
+ }
+
+error:
+ kfree_skb(skb);
+}
--- a/net/bluetooth/hci_codec.h
+++ b/net/bluetooth/hci_codec.h
@@ -3,4 +3,5 @@
/* Copyright (C) 2014 Intel Corporation */
void hci_read_supported_codecs(struct hci_dev *hdev);
+void hci_read_supported_codecs_v2(struct hci_dev *hdev);
void hci_codec_list_clear(struct list_head *codec_list);
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -935,7 +935,9 @@ static int __hci_init(struct hci_dev *hd
return err;
/* Read local codec list if the HCI command is supported */
- if (hdev->commands[29] & 0x20)
+ if (hdev->commands[45] & 0x04)
+ hci_read_supported_codecs_v2(hdev);
+ else if (hdev->commands[29] & 0x20)
hci_read_supported_codecs(hdev);
/* This function is only called when the controller is actually in