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Commit fc7f40d5 authored by Maya Erez's avatar Maya Erez
Browse files

usb: phy: Expose new PHY callback for performing PHY reset 



Add a new PHY callback for performing PHY reset, which is required
by some targets during their initialization sequence.
As usb_phy_reset name was already in use by local msm PHY APIs,
change the previous usb_phy_reset to msm_usb_phy_reset.

Change-Id: Ieb5099d12e107c123d8889058aa564d0b091d6f9
Signed-off-by: default avatarMaya Erez <merez@codeaurora.org>
parent 614d6d7e

drivers/usb/host/ehci-msm2.c

+2 −2
Original line number Diff line number Diff line
@@ -603,7 +603,7 @@ static int msm_ehci_phy_reset(struct msm_hcd *mhcd) 
	return 0;

}



static void usb_phy_reset(struct msm_hcd *mhcd)

static void msm_usb_phy_reset(struct msm_hcd *mhcd)

{

	u32 val;
@@ -661,7 +661,7 @@ static int msm_hsusb_reset(struct msm_hcd *mhcd) 
								USB_PHY_CTRL2);



	/* Reset USB PHY after performing USB Link RESET */

	usb_phy_reset(mhcd);

	msm_usb_phy_reset(mhcd);



	msleep(100);

drivers/usb/phy/phy-msm-usb.c

+3 −3
Original line number Diff line number Diff line
@@ -534,7 +534,7 @@ static int msm_otg_link_reset(struct msm_otg *motg) 
	return 0;

}



static void usb_phy_reset(struct msm_otg *motg)

static void msm_usb_phy_reset(struct msm_otg *motg)

{

	u32 val;
@@ -598,7 +598,7 @@ static int msm_otg_reset(struct usb_phy *phy) 
	msleep(100);



	/* Reset USB PHY after performing USB Link RESET */

	usb_phy_reset(motg);

	msm_usb_phy_reset(motg);



	/* Program USB PHY Override registers. */

	ulpi_init(motg);
@@ -607,7 +607,7 @@ static int msm_otg_reset(struct usb_phy *phy) 
	 * It is recommended in HPG to reset USB PHY after programming

	 * USB PHY Override registers.

	 */

	usb_phy_reset(motg);

	msm_usb_phy_reset(motg);



	if (motg->clk)

		clk_disable_unprepare(motg->clk);

include/linux/usb/phy.h

+12 −0
Original line number Diff line number Diff line
@@ -122,6 +122,9 @@ struct usb_phy { 
			enum usb_device_speed speed);

	int	(*notify_disconnect)(struct usb_phy *x,

			enum usb_device_speed speed);



	/* reset the PHY clocks */

	int	(*reset)(struct usb_phy *x);

};



/**
@@ -214,6 +217,15 @@ usb_phy_post_init(struct usb_phy *x) 
	return 0;

}



static inline int

usb_phy_reset(struct usb_phy *x)

{

	if (x && x->reset)

		return x->reset(x);



	return 0;

}



/* for usb host and peripheral controller drivers */

#if IS_ENABLED(CONFIG_USB_PHY)

extern struct usb_phy *usb_get_phy(enum usb_phy_type type);