linux-kernel - [PATCH v2 3/4] Bluetooth: hci_qca: Enable power off/on support during hci down/up for QCA Rome

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Message-Id: <20191226064554.16803-3-rjliao@codeaurora.org>
Date:   Thu, 26 Dec 2019 14:45:53 +0800
From:   Rocky Liao <rjliao@...eaurora.org>
To:     marcel@...tmann.org, johan.hedberg@...il.com
Cc:     linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, Rocky Liao <rjliao@...eaurora.org>
Subject: [PATCH v2 3/4] Bluetooth: hci_qca: Enable power off/on support during hci down/up for QCA Rome

This patch registers hdev->shutdown() callback and also sets
HCI_QUIRK_NON_PERSISTENT_SETUP for QCA Rome. It will power-off the BT chip
during hci down and power-on/initialize the chip again during hci up.

Signed-off-by: Rocky Liao <rjliao@...eaurora.org>
---

Changes in v2: None

 drivers/bluetooth/hci_qca.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 45042aa27fa4..7e202041ed77 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1300,6 +1300,11 @@ static int qca_setup(struct hci_uart *hu)
 	} else {
 		bt_dev_info(hdev, "ROME setup");
 		if (hu->serdev) {
+			/* Enable NON_PERSISTENT_SETUP QUIRK to ensure to
+			 * execute setup for every hci up.
+			 */
+			set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
+			hu->hdev->shutdown = qca_power_off;
 			qcadev = serdev_device_get_drvdata(hu->serdev);
 			gpiod_set_value_cansleep(qcadev->bt_en, 1);
 			/* Controller needs time to bootup. */
-- 
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