openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Kuninori Morimoto 2012-10-29 00:45:24 -07:00 committed by Felipe Balbi
parent 3192fcb234
commit 87c2905fd8
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/usb/renesas_usbhs/mod_host.c
View File

@ -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;
}