Commit 30f11dda authored by Archie Pusaka's avatar Archie Pusaka Committed by Marcel Holtmann
Browse files

Bluetooth: hci_h5: btrtl: Maintain flow control if wakeup is enabled 



For chips that doesn't reset on suspend, we need to provide the correct
value of flow_control when it resumes. Therefore, store the flow
control value when reading from the config file to be reused upon
suspend.

Signed-off-by: default avatarArchie Pusaka <apusaka@chromium.org>
Reviewed-by: default avatarAbhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: default avatarHilda Wu <hildawu@realtek.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 66f077dd

drivers/bluetooth/hci_h5.c

+8 −0
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ enum { 
	H5_RX_ESC,		/* SLIP escape mode */

	H5_TX_ACK_REQ,		/* Pending ack to send */

	H5_WAKEUP_DISABLE,	/* Device cannot wake host */

	H5_HW_FLOW_CONTROL,	/* Use HW flow control */

};



struct h5 {
@@ -920,6 +921,9 @@ static int h5_btrtl_setup(struct h5 *h5) 
	serdev_device_set_baudrate(h5->hu->serdev, controller_baudrate);

	serdev_device_set_flow_control(h5->hu->serdev, flow_control);



	if (flow_control)

		set_bit(H5_HW_FLOW_CONTROL, &h5->flags);



	err = btrtl_download_firmware(h5->hu->hdev, btrtl_dev);

	/* Give the device some time before the hci-core sends it a reset */

	usleep_range(10000, 20000);
@@ -1012,7 +1016,11 @@ static int h5_btrtl_resume(struct h5 *h5) 
		queue_work(system_long_wq, &reprobe->work);

	} else {

		gpiod_set_value_cansleep(h5->device_wake_gpio, 1);



		if (test_bit(H5_HW_FLOW_CONTROL, &h5->flags))

			serdev_device_set_flow_control(h5->hu->serdev, true);

	}



	return 0;

}