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path: root/drivers/usb/gadget/atmel_usba_udc.c
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Diffstat (limited to 'drivers/usb/gadget/atmel_usba_udc.c')
-rw-r--r--drivers/usb/gadget/atmel_usba_udc.c44
1 files changed, 6 insertions, 38 deletions
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index b66130c9726..f2a970f75bf 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -489,13 +489,8 @@ request_complete(struct usba_ep *ep, struct usba_request *req, int status)
if (req->req.status == -EINPROGRESS)
req->req.status = status;
- if (req->mapped) {
- dma_unmap_single(
- &udc->pdev->dev, req->req.dma, req->req.length,
- ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- req->req.dma = DMA_ADDR_INVALID;
- req->mapped = 0;
- }
+ if (req->using_dma)
+ usb_gadget_unmap_request(&udc->gadget, &req->req, ep->is_in);
DBG(DBG_GADGET | DBG_REQ,
"%s: req %p complete: status %d, actual %u\n",
@@ -684,7 +679,6 @@ usba_ep_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
return NULL;
INIT_LIST_HEAD(&req->queue);
- req->req.dma = DMA_ADDR_INVALID;
return &req->req;
}
@@ -717,20 +711,11 @@ static int queue_dma(struct usba_udc *udc, struct usba_ep *ep,
return -EINVAL;
}
- req->using_dma = 1;
-
- if (req->req.dma == DMA_ADDR_INVALID) {
- req->req.dma = dma_map_single(
- &udc->pdev->dev, req->req.buf, req->req.length,
- ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- req->mapped = 1;
- } else {
- dma_sync_single_for_device(
- &udc->pdev->dev, req->req.dma, req->req.length,
- ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- req->mapped = 0;
- }
+ ret = usb_gadget_map_request(&udc->gadget, &req->req, ep->is_in);
+ if (ret)
+ return ret;
+ 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;
@@ -1799,7 +1784,6 @@ static int atmel_usba_start(struct usb_gadget *gadget,
udc->devstatus = 1 << USB_DEVICE_SELF_POWERED;
udc->driver = driver;
- udc->gadget.dev.driver = &driver->driver;
spin_unlock_irqrestore(&udc->lock, flags);
clk_enable(udc->pclk);
@@ -1841,7 +1825,6 @@ static int atmel_usba_stop(struct usb_gadget *gadget,
toggle_bias(0);
usba_writel(udc, CTRL, USBA_DISABLE_MASK);
- udc->gadget.dev.driver = NULL;
udc->driver = NULL;
clk_disable(udc->hclk);
@@ -1900,10 +1883,6 @@ static int __init usba_udc_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n",
(unsigned long)fifo->start, udc->fifo);
- device_initialize(&udc->gadget.dev);
- udc->gadget.dev.parent = &pdev->dev;
- udc->gadget.dev.dma_mask = pdev->dev.dma_mask;
-
platform_set_drvdata(pdev, udc);
/* Make sure we start from a clean slate */
@@ -1962,12 +1941,6 @@ static int __init usba_udc_probe(struct platform_device *pdev)
}
udc->irq = irq;
- ret = device_add(&udc->gadget.dev);
- if (ret) {
- dev_dbg(&pdev->dev, "Could not add gadget: %d\n", ret);
- goto err_device_add;
- }
-
if (gpio_is_valid(pdata->vbus_pin)) {
if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
udc->vbus_pin = pdata->vbus_pin;
@@ -2007,9 +1980,6 @@ err_add_udc:
gpio_free(udc->vbus_pin);
}
- device_unregister(&udc->gadget.dev);
-
-err_device_add:
free_irq(irq, udc);
err_request_irq:
kfree(usba_ep);
@@ -2053,8 +2023,6 @@ static int __exit usba_udc_remove(struct platform_device *pdev)
clk_put(udc->hclk);
clk_put(udc->pclk);
- device_unregister(&udc->gadget.dev);
-
return 0;
}