Add a deep sleep vendor command to be sent during suspend, allowing the
device to enter a lower power state.
Signed-off-by: Šerif Rami <ramiserifpersia@gmail.com>
---
sound/usb/usx2y/us144mkii.c | 7 +++++++
sound/usb/usx2y/us144mkii.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/sound/usb/usx2y/us144mkii.c b/sound/usb/usx2y/us144mkii.c
index f7944eb2fb93..e452250fc5b4 100644
--- a/sound/usb/usx2y/us144mkii.c
+++ b/sound/usb/usx2y/us144mkii.c
@@ -322,6 +322,13 @@ static int tascam_suspend(struct usb_interface *intf, pm_message_t message)
usb_kill_anchored_urbs(&tascam->midi_in_anchor);
usb_kill_anchored_urbs(&tascam->midi_out_anchor);
+ dev_info(&intf->dev, "sending deep sleep command\n");
+ int err = usb_control_msg(tascam->dev, usb_sndctrlpipe(tascam->dev, 0),
+ VENDOR_REQ_DEEP_SLEEP, RT_H2D_VENDOR_DEV,
+ 0x0000, 0x0000, NULL, 0, USB_CTRL_TIMEOUT_MS);
+ if (err < 0)
+ dev_err(&intf->dev, "deep sleep command failed: %d\n", err);
+
return 0;
}
diff --git a/sound/usb/usx2y/us144mkii.h b/sound/usb/usx2y/us144mkii.h
index c740a0b5a0ea..ecc4c2fed9e6 100644
--- a/sound/usb/usx2y/us144mkii.h
+++ b/sound/usb/usx2y/us144mkii.h
@@ -46,6 +46,7 @@ enum uac_control_selector {
enum tascam_vendor_request {
VENDOR_REQ_REGISTER_WRITE = 0x41,
+ VENDOR_REQ_DEEP_SLEEP = 0x44,
VENDOR_REQ_MODE_CONTROL = 0x49,
};
--
2.39.5