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Commit c8111884 authored by Bo Shen's avatar Bo Shen Committed by Greg Kroah-Hartman
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usb: gadget: udc: atmel: change setting for DMA 



commit f40afdddeb6c54ffd1e2920a5e93e363d6748db6 upstream.

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)
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>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 84ac889b

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