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Commit 3c9f94ac authored by Felipe Balbi's avatar Felipe Balbi
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usb: dwc3: core: refactor PHY initialization 



our probe() routine is too large and we can
easily refactor PHY-related code out to another
function to make it slightly less painful to read.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 687ef981

drivers/usb/dwc3/core.c

+66 −54
Original line number Diff line number Diff line
@@ -486,70 +486,20 @@ static void dwc3_core_exit(struct dwc3 *dwc) 
	phy_exit(dwc->usb3_generic_phy);

}



#define DWC3_ALIGN_MASK		(16 - 1)



static int dwc3_probe(struct platform_device *pdev)

static int dwc3_core_get_phy(struct dwc3 *dwc)

{

	struct device		*dev = &pdev->dev;

	struct dwc3_platform_data *pdata = dev_get_platdata(dev);

	struct device		*dev = dwc->dev;

	struct device_node	*node = dev->of_node;

	struct resource		*res;

	struct dwc3		*dwc;



	int			ret = -ENOMEM;



	void __iomem		*regs;

	void			*mem;



	mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);

	if (!mem) {

		dev_err(dev, "not enough memory\n");

		return -ENOMEM;

	}

	dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);

	dwc->mem = mem;



	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (!res) {

		dev_err(dev, "missing IRQ\n");

		return -ENODEV;

	}

	dwc->xhci_resources[1].start = res->start;

	dwc->xhci_resources[1].end = res->end;

	dwc->xhci_resources[1].flags = res->flags;

	dwc->xhci_resources[1].name = res->name;



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		dev_err(dev, "missing memory resource\n");

		return -ENODEV;

	}

	int ret;



	if (node) {

		dwc->maximum_speed = of_usb_get_maximum_speed(node);



		dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);

		dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);



		dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");

		dwc->dr_mode = of_usb_get_dr_mode(node);

	} else if (pdata) {

		dwc->maximum_speed = pdata->maximum_speed;



		dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);

		dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);



		dwc->needs_fifo_resize = pdata->tx_fifo_resize;

		dwc->dr_mode = pdata->dr_mode;

	} else {

		dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);

		dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);

	}



	/* default to superspeed if no maximum_speed passed */

	if (dwc->maximum_speed == USB_SPEED_UNKNOWN)

		dwc->maximum_speed = USB_SPEED_SUPER;



	if (IS_ERR(dwc->usb2_phy)) {

		ret = PTR_ERR(dwc->usb2_phy);

		if (ret == -ENXIO || ret == -ENODEV) {
@@ -600,6 +550,69 @@ static int dwc3_probe(struct platform_device *pdev) 
		}

	}



	return 0;

}



#define DWC3_ALIGN_MASK		(16 - 1)



static int dwc3_probe(struct platform_device *pdev)

{

	struct device		*dev = &pdev->dev;

	struct dwc3_platform_data *pdata = dev_get_platdata(dev);

	struct device_node	*node = dev->of_node;

	struct resource		*res;

	struct dwc3		*dwc;



	int			ret = -ENOMEM;



	void __iomem		*regs;

	void			*mem;



	mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);

	if (!mem) {

		dev_err(dev, "not enough memory\n");

		return -ENOMEM;

	}

	dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);

	dwc->mem = mem;

	dwc->dev = dev;



	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (!res) {

		dev_err(dev, "missing IRQ\n");

		return -ENODEV;

	}

	dwc->xhci_resources[1].start = res->start;

	dwc->xhci_resources[1].end = res->end;

	dwc->xhci_resources[1].flags = res->flags;

	dwc->xhci_resources[1].name = res->name;



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		dev_err(dev, "missing memory resource\n");

		return -ENODEV;

	}



	if (node) {

		dwc->maximum_speed = of_usb_get_maximum_speed(node);



		dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");

		dwc->dr_mode = of_usb_get_dr_mode(node);

	} else if (pdata) {

		dwc->maximum_speed = pdata->maximum_speed;



		dwc->needs_fifo_resize = pdata->tx_fifo_resize;

		dwc->dr_mode = pdata->dr_mode;

	}



	/* default to superspeed if no maximum_speed passed */

	if (dwc->maximum_speed == USB_SPEED_UNKNOWN)

		dwc->maximum_speed = USB_SPEED_SUPER;



	ret = dwc3_core_get_phy(dwc);

	if (ret)

		return ret;



	dwc->xhci_resources[0].start = res->start;

	dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +

					DWC3_XHCI_REGS_END;
@@ -621,7 +634,6 @@ static int dwc3_probe(struct platform_device *pdev) 


	dwc->regs	= regs;

	dwc->regs_size	= resource_size(res);

	dwc->dev	= dev;



	dev->dma_mask	= dev->parent->dma_mask;

	dev->dma_parms	= dev->parent->dma_parms;