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SubjectRe: [PATCH v1] Bluetooth: hci_qca: Add poweroff support during hci down for QCA Rome
Please ingnore this patch, I have just sent the new set of patches.

在 2019-12-19 12:03,Rocky Liao 写道:
> 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@codeaurora.org>
> ---
> 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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