Introduce ath_vendor_cmd function which can be used to
configure 'tags' and patch the firmware.
ATH vendor command has the following format:
| OPCODE (u8) | INDEX (LE16) | DLEN (U8) | DATA (U8 * DLEN) |
BD address configuration tag is at index 0x0001.
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
---
drivers/bluetooth/hci_ath.c | 49 +++++++++++++++++++++++++++++----------------
1 file changed, 32 insertions(+), 17 deletions(-)
diff --git a/drivers/bluetooth/hci_ath.c b/drivers/bluetooth/hci_ath.c
index 0ccf6bf..5f17ec3 100644
--- a/drivers/bluetooth/hci_ath.c
+++ b/drivers/bluetooth/hci_ath.c
@@ -50,6 +50,17 @@ struct ath_struct {
struct work_struct ctxtsw;
};
+#define OP_WRITE_TAG 0x01
+
+#define INDEX_BDADDR 0x01
+
+struct ath_vendor_cmd {
+ __u8 opcode;
+ __le16 index;
+ __u8 len;
+ __u8 data[251];
+} __packed;
+
static int ath_wakeup_ar3k(struct tty_struct *tty)
{
int status = tty->driver->ops->tiocmget(tty);
@@ -144,30 +155,34 @@ static int ath_flush(struct hci_uart *hu)
return 0;
}
-static int ath_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+static int ath_vendor_cmd(struct hci_dev *hdev, uint8_t opcode, uint16_t index,
+ const void *data, size_t dlen)
{
struct sk_buff *skb;
- u8 buf[10];
- int err;
-
- buf[0] = 0x01;
- buf[1] = 0x01;
- buf[2] = 0x00;
- buf[3] = sizeof(bdaddr_t);
- memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
-
- skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
- if (IS_ERR(skb)) {
- err = PTR_ERR(skb);
- BT_ERR("%s: Change address command failed (%d)",
- hdev->name, err);
- return err;
- }
+ struct ath_vendor_cmd cmd;
+
+ if (dlen > sizeof(cmd.data))
+ return -EINVAL;
+
+ cmd.opcode = opcode;
+ cmd.index = cpu_to_le16(index);
+ cmd.len = dlen;
+ memcpy(cmd.data, data, dlen);
+
+ skb = __hci_cmd_sync(hdev, 0xfc0b, dlen + 4, &cmd, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
kfree_skb(skb);
return 0;
}
+static int ath_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ return ath_vendor_cmd(hdev, OP_WRITE_TAG, INDEX_BDADDR, bdaddr,
+ sizeof(*bdaddr));
+}
+
static int ath_setup(struct hci_uart *hu)
{
BT_DBG("hu %p", hu);
--
2.7.4
--
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