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Commit 51e1e7bc authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: add basic PHY support 



this will let us control PHYs on platforms which
need them.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent d720f057

drivers/usb/dwc3/core.c

+15 −0
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ 
#include <linux/dma-mapping.h>

#include <linux/of.h>



#include <linux/usb/otg.h>

#include <linux/usb/ch9.h>

#include <linux/usb/gadget.h>
@@ -136,6 +137,8 @@ static void dwc3_core_soft_reset(struct dwc3 *dwc) 
	reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;

	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);



	usb_phy_init(dwc->usb2_phy);

	usb_phy_init(dwc->usb3_phy);

	mdelay(100);



	/* Clear USB3 PHY reset */
@@ -465,6 +468,18 @@ static int __devinit dwc3_probe(struct platform_device *pdev) 
		return -ENOMEM;

	}



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

	if (IS_ERR_OR_NULL(dwc->usb2_phy)) {

		dev_err(dev, "no usb2 phy configured\n");

		return -EPROBE_DEFER;

	}



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

	if (IS_ERR_OR_NULL(dwc->usb3_phy)) {

		dev_err(dev, "no usb3 phy configured\n");

		return -EPROBE_DEFER;

	}



	spin_lock_init(&dwc->lock);

	platform_set_drvdata(pdev, dwc);

drivers/usb/dwc3/core.h

+5 −0
Original line number Diff line number Diff line
@@ -624,6 +624,8 @@ struct dwc3_scratchpad_array { 
 * @maximum_speed: maximum speed requested (mainly for testing purposes)

 * @revision: revision register contents

 * @mode: mode of operation

 * @usb2_phy: pointer to USB2 PHY

 * @usb3_phy: pointer to USB3 PHY

 * @is_selfpowered: true when we are selfpowered

 * @three_stage_setup: set if we perform a three phase setup

 * @ep0_bounced: true when we used bounce buffer
@@ -667,6 +669,9 @@ struct dwc3 { 
	struct usb_gadget	gadget;

	struct usb_gadget_driver *gadget_driver;



	struct usb_phy		*usb2_phy;

	struct usb_phy		*usb3_phy;



	void __iomem		*regs;

	size_t			regs_size;