[PATCH v2 9/9] Bluetooth: hci_qca: Set 'bt_en_available' based on W_DISABLE2# presence in M.2 connector

[Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>]

From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>

Check if the M.2 connector supports the W_DISABLE2# property or not by
querying the pwrseq provider's DT node. If not available, then set
'bt_en_available' flag to 'false'. This flag is used to set the
HCI_QUIRK_NON_PERSISTENT_SETUP HCI quirk, which informs the HCI layer
whether the shutdown() callback for the device can be triggered or not.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
---
 drivers/bluetooth/hci_qca.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 3e71a72ea7c7..b5439b9956cf 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -2449,10 +2449,17 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 		 * the M.2 Key E connector.
 		 */
 		if (of_graph_is_present(dev_of_node(&serdev->ctrl->dev))) {
+			struct device *dev;
+
 			qcadev->bt_power->pwrseq = devm_pwrseq_get(&serdev->ctrl->dev,
 								   "uart");
 			if (IS_ERR(qcadev->bt_power->pwrseq))
 				return PTR_ERR(qcadev->bt_power->pwrseq);
+
+			dev = pwrseq_to_device(qcadev->bt_power->pwrseq);
+			if (!device_property_present(dev, "w-disable2-gpios"))
+				bt_en_available = false;
+
 			break;
 		}
 

-- 
2.51.0