C++ (Cpp) ehci_octeon_start Examples

Example #1

File: ehci-octeon.c Project: garyvan/openwrt-1.6

static int ehci_octeon_drv_probe(struct platform_device *pdev)
{
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	struct resource *res_mem;
	int irq;
	int ret;

	if (usb_disabled())
		return -ENODEV;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "No irq assigned\n");
		return -ENODEV;
	}

	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (res_mem == NULL) {
		dev_err(&pdev->dev, "No register space assigned\n");
		return -ENODEV;
	}

	/*
	 * We can DMA from anywhere. But the descriptors must be in
	 * the lower 4GB.
	 */
	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
	pdev->dev.dma_mask = &ehci_octeon_dma_mask;

	hcd = usb_create_hcd(&ehci_octeon_hc_driver, &pdev->dev, "octeon");
	if (!hcd)
		return -ENOMEM;

	hcd->rsrc_start = res_mem->start;
	hcd->rsrc_len = resource_size(res_mem);

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
				OCTEON_EHCI_HCD_NAME)) {
		dev_err(&pdev->dev, "request_mem_region failed\n");
		ret = -EBUSY;
		goto err1;
	}

	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	if (!hcd->regs) {
		dev_err(&pdev->dev, "ioremap failed\n");
		ret = -ENOMEM;
		goto err2;
	}

	ehci_octeon_start(&pdev->dev);

	ehci = hcd_to_ehci(hcd);

	/* Octeon EHCI matches CPU endianness. */
#ifdef __BIG_ENDIAN
	ehci->big_endian_mmio = 1;
#endif

	ehci->caps = hcd->regs;

	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (ret) {
		dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret);
		goto err3;
	}

	platform_set_drvdata(pdev, hcd);

	return 0;
err3:
	ehci_octeon_stop();

	iounmap(hcd->regs);
err2:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
	usb_put_hcd(hcd);
	return ret;
}

Example #2

File: ehci-octeon.c Project: 3null/linux

static int ehci_octeon_drv_probe(struct platform_device *pdev)
{
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	struct resource *res_mem;
	int irq;
	int ret;

	if (usb_disabled())
		return -ENODEV;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "No irq assigned\n");
		return -ENODEV;
	}

	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (res_mem == NULL) {
		dev_err(&pdev->dev, "No register space assigned\n");
		return -ENODEV;
	}

	/*
	 * We can DMA from anywhere. But the descriptors must be in
	 * the lower 4GB.
	 */
	pdev->dev.dma_mask = &ehci_octeon_dma_mask;
	ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
	if (ret)
		return ret;

	hcd = usb_create_hcd(&ehci_octeon_hc_driver, &pdev->dev, "octeon");
	if (!hcd)
		return -ENOMEM;

	hcd->rsrc_start = res_mem->start;
	hcd->rsrc_len = resource_size(res_mem);

	hcd->regs = devm_ioremap_resource(&pdev->dev, res_mem);
	if (IS_ERR(hcd->regs)) {
		ret = PTR_ERR(hcd->regs);
		goto err1;
	}

	ehci_octeon_start();

	ehci = hcd_to_ehci(hcd);

	/* Octeon EHCI matches CPU endianness. */
#ifdef __BIG_ENDIAN
	ehci->big_endian_mmio = 1;
#endif

	ehci->caps = hcd->regs;

	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (ret) {
		dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret);
		goto err2;
	}
	device_wakeup_enable(hcd->self.controller);

	platform_set_drvdata(pdev, hcd);

	return 0;
err2:
	ehci_octeon_stop();

err1:
	usb_put_hcd(hcd);
	return ret;
}