From: Tedd Ho-Jeong An <tedd.an@xxxxxxxxx>
Some platforms have an issue with BT LED when the interface is
down or BT radio is turned off, which takes 5 seconds to BT LED
goes off. This command turns off the BT LED immediately.
This patch sends the Intel vendor command to turn off the LED.
Signed-off-by: Tedd Ho-Jeong An <tedd.an@xxxxxxxxx>
---
drivers/bluetooth/btintel.c | 23 +++++++++++++++++++++++
drivers/bluetooth/btintel.h | 1 +
2 files changed, 24 insertions(+)
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index 2cf3cdf8f9cb..0d3893d135f1 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -1736,6 +1736,13 @@ static int btintel_setup_combined(struct hci_dev *hdev)
case 0x07: /* WP */
case 0x08: /* StP */
/* Legacy ROM product */
+
+ /* These devices have an issue with LED which doesn't
+ * go off immediately during shutdown. Set the flag
+ * here to send the LED OFF command during shutdown.
+ */
+ btintel_set_flag(hdev, INTEL_BROKEN_LED);
+
err = btintel_legacy_rom_setup(hdev, &ver);
break;
case 0x0b: /* SfP */
@@ -1780,6 +1787,7 @@ static int btintel_setup_combined(struct hci_dev *hdev)
static int btintel_shutdown_combined(struct hci_dev *hdev)
{
struct sk_buff *skb;
+ int ret;
/* Send HCI Reset to the controller to stop any BT activity which
* were triggered. This will help to save power and maintain the
@@ -1792,6 +1800,21 @@ static int btintel_shutdown_combined(struct hci_dev *hdev)
}
kfree_skb(skb);
+
+ /* Some platforms have an issue with BT LED when the interface is
+ * down or BT radio is turned off, which takes 5 seconds to BT LED
+ * goes off. This command turns off the BT LED immediately.
+ */
+ if (btintel_test_flag(hdev, INTEL_BROKEN_LED)) {
+ skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ ret = PTR_ERR(skb);
+ bt_dev_err(hdev, "turning off Intel device LED failed");
+ return ret;
+ }
+ kfree_skb(skb);
+ }
+
return 0;
}
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index 8a49795ad5af..aef04fa0e1ef 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -145,6 +145,7 @@ enum {
INTEL_FIRMWARE_FAILED,
INTEL_BOOTING,
INTEL_BROKEN_INITIAL_NCMD,
+ INTEL_BROKEN_LED,
__INTEL_NUM_FLAGS,
};
--
2.25.1
