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>
diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c
index 9b69a13..e856b44 100644
--- a/drivers/usb/renesas_usbhs/mod_host.c
+++ b/drivers/usb/renesas_usbhs/mod_host.c
@@ -681,9 +681,9 @@
}
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_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;
}