diff options
| author | Bo Shen <voice.shen@atmel.com> | 2014-12-17 17:18:48 +0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-02-20 00:49:35 +0000 |
| commit | 226685fb127585285960b2cf56574bcdfac05bc4 (patch) | |
| tree | a037c2d34b23db976dd18ddccda0445e3f727c32 /drivers/usb/gadget | |
| parent | adca25243276dfec7facd7825f8aba3917152371 (diff) | |
| download | kernel_samsung_smdk4412-226685fb127585285960b2cf56574bcdfac05bc4.zip kernel_samsung_smdk4412-226685fb127585285960b2cf56574bcdfac05bc4.tar.gz kernel_samsung_smdk4412-226685fb127585285960b2cf56574bcdfac05bc4.tar.bz2 | |
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: 914a3f3b3754 (USB: add atmel_usba_udc driver)
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/atmel_usba_udc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index b299c32..0834712 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -739,10 +739,10 @@ static int queue_dma(struct usba_udc *udc, struct usba_ep *ep, 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 |