From: Archie Pusaka <apusaka@xxxxxxxxxxxx>
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: Archie Pusaka <apusaka@xxxxxxxxxxxx>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
Reviewed-by: Hilda Wu <hildawu@xxxxxxxxxxx>
---
(no changes since v1)
drivers/bluetooth/hci_h5.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index fd672111a048..cbc63b057f33 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -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;
}
--
2.32.0.432.gabb21c7263-goog
