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Bluetooth: Add support for Read Local Supported Codecs V2

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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>
This commit is contained in:
Kiran K 2021-09-07 15:42:38 +05:30 committed by Luiz Augusto von Dentz
parent 8961987f3f
commit 9ae664028a
4 changed files with 99 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
include/net/bluetooth/hci.h
View File

@ -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;

66
net/bluetooth/hci_codec.c
View File

@ -170,3 +170,69 @@ void hci_read_supported_codecs(struct hci_dev *hdev)
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);
}

1
net/bluetooth/hci_codec.h
View File

@ -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);

4
net/bluetooth/hci_core.c
View File

@ -935,7 +935,9 @@ static int __hci_init(struct hci_dev *hdev)
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