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Bluetooth: btmtk: derive the firmware ISO setting from MTK_ISO_THRESHOLD

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The ISO data transfer size is spelled out twice: as a raw byte pair in the
vendor command sent by btmtk_usb_isointf_init(), and as MTK_ISO_THRESHOLD
for the padding in btmtk_isopkt_pad(). Build the command payload from the
macro so the size is stated once, and update the setting for current
MediaTek controllers.

Fixes: ceac1cb025 ("Bluetooth: btusb: mediatek: add ISO data transmission functions")
Signed-off-by: Chris Lu <chris.lu@mediatek.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Chris Lu 2026-10-22 11:21:50 +08:00 committed by Luiz Augusto von Dentz
parent d015faf684
commit 855c9a5460
1 changed files with 3 additions and 3 deletions
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6
drivers/bluetooth/btmtk.c
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@ -31,7 +31,7 @@
#define BTMTK_CBMCU_FLAG_ENABLE_PATCH 0xF1
/* It is for mt79xx iso data transmission setting */
#define MTK_ISO_THRESHOLD 264
#define MTK_ISO_THRESHOLD 342
struct btmtk_patch_header {
u8 datetime[16];
@ -1741,7 +1741,7 @@ static int btmtk_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
static int btmtk_usb_isointf_init(struct hci_dev *hdev)
{
struct btmtk_data *btmtk_data = hci_get_priv(hdev);
u8 iso_param[2] = { 0x08, 0x01 };
__le16 iso_param = cpu_to_le16(MTK_ISO_THRESHOLD);
struct sk_buff *skb;
int err;
@ -1756,7 +1756,7 @@ static int btmtk_usb_isointf_init(struct hci_dev *hdev)
return err;
}
skb = __hci_cmd_sync(hdev, 0xfd98, sizeof(iso_param), iso_param,
skb = __hci_cmd_sync(hdev, 0xfd98, sizeof(iso_param), &iso_param,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "Failed to apply iso setting (%ld)", PTR_ERR(skb));