This patch enables power off support for hci down and power on support
for hci up. As QCA Rome power sources are ignited by bt_en GPIO, we will
pull it down during hci down, i.e. an complete power off of QCA Rome.
So while hci up, will pull up the bt_en GPIO again to power on the chip,
requests BT chip version and download the firmware.
Signed-off-by: Rocky Liao <rjliao@xxxxxxxxxxxxxx>
---
drivers/bluetooth/hci_qca.c | 34 ++++++++++++++++++++++++++++++----
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index b602ed01505b..1cb706acdef6 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1257,6 +1257,7 @@ static int qca_setup(struct hci_uart *hu)
{
struct hci_dev *hdev = hu->hdev;
struct qca_data *qca = hu->priv;
+ struct qca_serdev *qcadev;
unsigned int speed, qca_baudrate = QCA_BAUDRATE_115200;
enum qca_btsoc_type soc_type = qca_soc_type(hu);
const char *firmware_name = qca_get_firmware_name(hu);
@@ -1293,6 +1294,17 @@ static int qca_setup(struct hci_uart *hu)
return ret;
} 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);
+ qcadev = serdev_device_get_drvdata(hu->serdev);
+ hu->hdev->shutdown = qca_power_off;
+ gpiod_set_value_cansleep(qcadev->bt_en, 1);
+ /* Controller needs time to bootup. */
+ msleep(150);
+ }
qca_set_speed(hu, QCA_INIT_SPEED);
}
@@ -1413,13 +1425,27 @@ static void qca_power_shutdown(struct hci_uart *hu)
static int qca_power_off(struct hci_dev *hdev)
{
struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct qca_serdev *qcadev;
+ enum qca_btsoc_type soc_type = qca_soc_type(hu);
- /* Perform pre shutdown command */
- qca_send_pre_shutdown_cmd(hdev);
+ if (qca_is_wcn399x(soc_type)) {
+ /* Perform pre shutdown command */
+ qca_send_pre_shutdown_cmd(hdev);
- usleep_range(8000, 10000);
+ usleep_range(8000, 10000);
+
+ qca_power_shutdown(hu);
+ } else {
+ if (hu->serdev) {
+
+ qcadev = serdev_device_get_drvdata(hu->serdev);
+
+ gpiod_set_value_cansleep(qcadev->bt_en, 0);
+
+ usleep_range(8000, 10000);
+ }
+ }
- qca_power_shutdown(hu);
return 0;
}
--
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