usb: gadget: Add remote wakeup support to f_rmnet BAM-BAM
On USB suspend, f_rmnet with BAM-BAM transport will register for BAM
wakeup notification. Upon wakeup event from the BAM, the u_bam will
trigger a USB remote wakeup.
Change-Id: I1d1be987f225c0b2edf5bf9af75e2dd15f8c045a
Signed-off-by: Amit Blay <ablay@codeaurora.org>
diff --git a/drivers/usb/gadget/u_bam.c b/drivers/usb/gadget/u_bam.c
index 3113c45..d379c66 100644
--- a/drivers/usb/gadget/u_bam.c
+++ b/drivers/usb/gadget/u_bam.c
@@ -1214,3 +1214,49 @@
return ret;
}
+
+static int gbam_wake_cb(void *param)
+{
+ struct gbam_port *port = (struct gbam_port *)param;
+ struct bam_ch_info *d;
+ struct f_rmnet *dev;
+
+ dev = port_to_rmnet(port->gr);
+ d = &port->data_ch;
+
+ pr_debug("%s: woken up by peer\n", __func__);
+
+ return usb_gadget_wakeup(dev->cdev->gadget);
+}
+
+void gbam_suspend(struct grmnet *gr, u8 port_num, enum transport_type trans)
+{
+ struct gbam_port *port;
+ struct bam_ch_info *d;
+
+ if (trans != USB_GADGET_XPORT_BAM2BAM)
+ return;
+
+ port = bam2bam_ports[port_num];
+ d = &port->data_ch;
+
+ pr_debug("%s: suspended port %d\n", __func__, port_num);
+
+ usb_bam_register_wake_cb(d->connection_idx, gbam_wake_cb, port);
+}
+
+void gbam_resume(struct grmnet *gr, u8 port_num, enum transport_type trans)
+{
+ struct gbam_port *port;
+ struct bam_ch_info *d;
+
+ if (trans != USB_GADGET_XPORT_BAM2BAM)
+ return;
+
+ port = bam2bam_ports[port_num];
+ d = &port->data_ch;
+
+ pr_debug("%s: resumed port %d\n", __func__, port_num);
+
+ usb_bam_register_wake_cb(d->connection_idx, NULL, NULL);
+}