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usb: mv_udc: Implement better qTD item accessor

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The code for retrieving qTD item for particular endpoint is hard
to understand, moreover it's duplicated all over the driver. Move
the code into single nice and documented function.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Lei Wen <leiwen@marvell.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Marek Vasut 2013-07-10 03:16:41 +02:00
parent 8a095a68ce
commit ede709c0d2
1 changed files with 15 additions and 2 deletions
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17
drivers/usb/gadget/mv_udc.c
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@ -123,6 +123,19 @@ static struct ept_queue_head *mv_get_qh(int ep_num, int dir_in)
return &controller.epts[(ep_num * 2) + dir_in];
}
/**
* mv_get_qtd() - return queue item for endpoint
* @ep_num: Endpoint number
* @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
*
* This function returns the QH associated with particular endpoint
* and it's direction.
*/
static struct ept_queue_item *mv_get_qtd(int ep_num, int dir_in)
{
return controller.items[(ep_num * 2) + dir_in];
}
static struct usb_request *
mv_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
{
@ -181,7 +194,7 @@ static int mv_ep_queue(struct usb_ep *ep,
int bit, num, len, in;
num = mv_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
in = (mv_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
item = controller.items[2 * num + in];
item = mv_get_qtd(num, in);
head = mv_get_qh(num, in);
phys = (unsigned)req->buf;
len = req->length;
@ -217,7 +230,7 @@ static void handle_ep_complete(struct mv_ep *ep)
in = (ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
if (num == 0)
ep->desc = &ep0_out_desc;
item = controller.items[2 * num + in];
item = mv_get_qtd(num, in);
if (item->info & 0xff)
printf("EP%d/%s FAIL nfo=%x pg0=%x\n",