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Commit 08f871a3 authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Kishon Vijay Abraham I
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usb: dwc3: host: convey the PHYs to xhci 



On some platforms a PHY may need to be handled also in the
host controller driver. Exynos5420 SoC requires some "PHY
tuning" based on the USB speed. This patch delivers dwc3's
PHYs to the xhci platform device when it's created.

Signed-off-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: default avatarVivek Gautam <gautam.vivek@samsung.com>
Acked-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent dbc98635

drivers/usb/dwc3/host.c

+16 −6
Original line number Diff line number Diff line
@@ -29,8 +29,7 @@ int dwc3_host_init(struct dwc3 *dwc) 
	xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);

	if (!xhci) {

		dev_err(dwc->dev, "couldn't allocate xHCI device\n");

		ret = -ENOMEM;

		goto err0;

		return -ENOMEM;

	}



	dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
@@ -60,22 +59,33 @@ int dwc3_host_init(struct dwc3 *dwc) 
		goto err1;

	}



	phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy",

			  dev_name(&xhci->dev));

	phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy",

			  dev_name(&xhci->dev));



	ret = platform_device_add(xhci);

	if (ret) {

		dev_err(dwc->dev, "failed to register xHCI device\n");

		goto err1;

		goto err2;

	}



	return 0;



err2:

	phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",

			  dev_name(&xhci->dev));

	phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",

			  dev_name(&xhci->dev));

err1:

	platform_device_put(xhci);



err0:

	return ret;

}



void dwc3_host_exit(struct dwc3 *dwc)

{

	phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",

			  dev_name(&dwc->xhci->dev));

	phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",

			  dev_name(&dwc->xhci->dev));

	platform_device_unregister(dwc->xhci);

}