usb: renesas_usbhs: add DMAEngine support on mod_host

This patch enabled dma mapping, and used dma transfer handler
on mod_host

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 15 insertions, 2 deletions

diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c
index 9b69a1323294..e856b449e28a 100644
--- a/drivers/usb/renesas_usbhs/mod_host.c
+++ b/drivers/usb/renesas_usbhs/mod_host.c
@@ -681,9 +681,9 @@ static int usbhsh_queue_push(struct usb_hcd *hcd,
         }
 
         if (usb_pipein(urb->pipe))
-                pipe->handler = &usbhs_fifo_pio_pop_handler;
+                pipe->handler = &usbhs_fifo_dma_pop_handler;
         else
-                pipe->handler = &usbhs_fifo_pio_push_handler;
+                pipe->handler = &usbhs_fifo_dma_push_handler;
 
         buf = (void *)(urb->transfer_buffer + urb->actual_length);
         len = urb->transfer_buffer_length - urb->actual_length;
@@ -916,6 +916,19 @@ static int usbhsh_dcp_queue_push(struct usb_hcd *hcd,
  */
 static int usbhsh_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
 {
+        if (map) {
+                struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
+                struct urb *urb = ureq->urb;
+
+                /* it can not use scatter/gather */
+                if (urb->num_sgs)
+                        return -EINVAL;
+
+                pkt->dma = urb->transfer_dma;
+                if (!pkt->dma)
+                        return -EINVAL;
+        }
+
         return 0;
 }