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Commit 2536d517 authored by Manu Gautam's avatar Manu Gautam
Browse files

USB: gadget: u_bam: Perform dbm ep_config on resume 



As DBM endpoint is reset on suspend, it must be
configured again on resume before starting data
transfers.

Change-Id: I7b7fd5d8f10bcfc383f9930a31936627c696ecfd
Signed-off-by: default avatarManu Gautam <mgautam@codeaurora.org>
parent 2e16cc4a

drivers/usb/gadget/function/u_bam.c

+30 −6
Original line number Diff line number Diff line
@@ -141,6 +141,8 @@ struct bam_ch_info { 


	struct usb_request	*rx_req;

	struct usb_request	*tx_req;

	bool			tx_req_dequeued;

	bool			rx_req_dequeued;



	u32			src_pipe_idx;

	u32			dst_pipe_idx;
@@ -935,6 +937,7 @@ static void gbam_stop_endless_rx(struct gbam_port *port) 
	}



	ep = port->port_usb->out;

	d->rx_req_dequeued = true;

	spin_unlock_irqrestore(&port->port_lock_ul, flags);

	pr_debug("%s: dequeue\n", __func__);

	status = usb_ep_dequeue(ep, d->rx_req);
@@ -957,6 +960,7 @@ static void gbam_stop_endless_tx(struct gbam_port *port) 
	}



	ep = port->port_usb->in;

	d->tx_req_dequeued = true;

	spin_unlock_irqrestore(&port->port_lock_dl, flags);

	pr_debug("%s: dequeue\n", __func__);

	status = usb_ep_dequeue(ep, d->tx_req);
@@ -1668,16 +1672,36 @@ static void gbam2bam_resume_work(struct work_struct *w) 
	if (d->trans == USB_GADGET_XPORT_BAM2BAM_IPA) {

		if (gadget_is_dwc3(gadget) &&

		    msm_dwc3_reset_ep_after_lpm(gadget)) {

				configure_data_fifo(d->usb_bam_type,

					d->src_connection_idx,

					port->port_usb->out, d->src_pipe_type);

			if (d->tx_req_dequeued) {

				msm_ep_unconfig(port->port_usb->in);

				configure_data_fifo(d->usb_bam_type,

					d->dst_connection_idx,

					port->port_usb->in, d->dst_pipe_type);

			}

			if (d->rx_req_dequeued) {

				msm_ep_unconfig(port->port_usb->out);

				configure_data_fifo(d->usb_bam_type,

					d->src_connection_idx,

					port->port_usb->out, d->src_pipe_type);

			}



			spin_unlock_irqrestore(&port->port_lock, flags);

			if (d->tx_req_dequeued)

				msm_dwc3_reset_dbm_ep(port->port_usb->in);

			if (d->rx_req_dequeued)

				msm_dwc3_reset_dbm_ep(port->port_usb->out);

			spin_lock_irqsave(&port->port_lock, flags);

			if (port->port_usb) {

				if (d->tx_req_dequeued)

					msm_ep_config(port->port_usb->in,

							d->tx_req);

				if (d->rx_req_dequeued)

					msm_ep_config(port->port_usb->out,

							d->rx_req);

			}

		}

		d->tx_req_dequeued = false;

		d->rx_req_dequeued = false;

		usb_bam_resume(d->usb_bam_type, &d->ipa_params);

	}

drivers/usb/gadget/function/u_bam_data.c

+14 −5
Original line number Diff line number Diff line
@@ -2067,21 +2067,30 @@ static void bam2bam_data_resume_work(struct work_struct *w) 
	if (gadget_is_dwc3(gadget) &&

		msm_dwc3_reset_ep_after_lpm(gadget)) {

		if (d->tx_req_dequeued) {

			msm_ep_unconfig(port->port_usb->in);

			configure_usb_data_fifo(d->usb_bam_type,

				d->dst_connection_idx,

				port->port_usb->in, d->dst_pipe_type);

			spin_unlock_irqrestore(&port->port_lock, flags);

			msm_dwc3_reset_dbm_ep(port->port_usb->in);

			spin_lock_irqsave(&port->port_lock, flags);

		}

		if (d->rx_req_dequeued) {

			msm_ep_unconfig(port->port_usb->out);

			configure_usb_data_fifo(d->usb_bam_type,

				d->src_connection_idx,

				port->port_usb->out, d->src_pipe_type);

		}

		spin_unlock_irqrestore(&port->port_lock, flags);

		if (d->tx_req_dequeued)

			msm_dwc3_reset_dbm_ep(port->port_usb->in);

		if (d->rx_req_dequeued)

			msm_dwc3_reset_dbm_ep(port->port_usb->out);

		spin_lock_irqsave(&port->port_lock, flags);

		if (port->port_usb) {

			if (d->tx_req_dequeued)

				msm_ep_config(port->port_usb->in, d->tx_req);

			if (d->rx_req_dequeued)

				msm_ep_config(port->port_usb->out, d->rx_req);

		}



	}

	d->tx_req_dequeued = false;

	d->rx_req_dequeued = false;