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Commit 349907c2 authored by Ivan T. Ivanov's avatar Ivan T. Ivanov Committed by Felipe Balbi
Browse files

usb: phy: msm: Handle disconnect events 



Put the transceiver in non-driving mode. Otherwise host
may not detect soft-disconnection.

Signed-off-by: default avatarIvan T. Ivanov <iivanov@mm-sol.com>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 30bf8667

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

+18 −0
Original line number Diff line number Diff line
@@ -235,6 +235,23 @@ static void ulpi_init(struct msm_otg *motg) 
	}

}



static int msm_phy_notify_disconnect(struct usb_phy *phy,

				   enum usb_device_speed speed)

{

	int val;



	/*

	 * Put the transceiver in non-driving mode. Otherwise host

	 * may not detect soft-disconnection.

	 */

	val = ulpi_read(phy, ULPI_FUNC_CTRL);

	val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;

	val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;

	ulpi_write(phy, val, ULPI_FUNC_CTRL);



	return 0;

}



static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert)

{

	int ret;
@@ -1626,6 +1643,7 @@ static int msm_otg_probe(struct platform_device *pdev) 


	phy->init = msm_phy_init;

	phy->set_power = msm_otg_set_power;

	phy->notify_disconnect = msm_phy_notify_disconnect;



	phy->io_ops = &msm_otg_io_ops;