Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f40afddd authored by Bo Shen's avatar Bo Shen Committed by Felipe Balbi
Browse files

usb: gadget: udc: atmel: change setting for DMA 



According to the datasheet, when transfer using DMA, the control
setting for IN packet only need END_BUF_EN, END_BUF_IE, CH_EN,
while for OUT packet, need more two bits END_TR_EN and END_TR_IE
to be configured.

Fixes: 914a3f3b (USB: add atmel_usba_udc driver)
Cc: <stable@vger.kernel.org> # 2.6.24+
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: default avatarBo Shen <voice.shen@atmel.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 84a2b61b

drivers/usb/gadget/udc/atmel_usba_udc.c

+3 −3
Original line number Diff line number Diff line
@@ -716,10 +716,10 @@ static int queue_dma(struct usba_udc *udc, struct usba_ep *ep, 
	req->using_dma = 1;

	req->ctrl = USBA_BF(DMA_BUF_LEN, req->req.length)

			| USBA_DMA_CH_EN | USBA_DMA_END_BUF_IE

			| USBA_DMA_END_TR_EN | USBA_DMA_END_TR_IE;

			| USBA_DMA_END_BUF_EN;



	if (ep->is_in)

		req->ctrl |= USBA_DMA_END_BUF_EN;

	if (!ep->is_in)

		req->ctrl |= USBA_DMA_END_TR_EN | USBA_DMA_END_TR_IE;



	/*

	 * Add this request to the queue and submit for DMA if