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Commit 0738f39f authored by Zhu Bin's avatar Zhu Bin Committed by Gerrit - the friendly Code Review server
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gpio-usbdetect: disable gpio trigger USB device mode 



Add qcom,disable-device-mode flag, if present then don't
treat GPIO high as Vbus high. And only notify host mode similar
to ID line.

Change-Id: I6ba42055a01b0f860d36b53ffaee1167ba6d538f
Signed-off-by: default avatarZhu Bin <cbinz@codeaurora.org>
parent 02f0c5a1

Documentation/devicetree/bindings/platform/msm/gpio-usbdetect.txt

+2 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ Optional Properties: 
	disconnect.

- qcom,gpio-mode-sel: If present, specifies a gpio to switch to host mode if

	value is 0 or device mode if 1.

- qcom,disable-device-mode: If present then don't treat GPIO high as Vbus high.

	And only notify host mode similar to ID line.



Example:

drivers/platform/msm/gpio-usbdetect.c

+9 −4
Original line number Diff line number Diff line 
/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2017, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -33,6 +33,7 @@ struct gpio_usbdetect { 
	struct regulator	*vdd12;

	int			gpio_usbdetect;

	bool			notify_host_mode;

	bool			disable_device_mode;

};



static int gpio_enable_ldos(struct gpio_usbdetect *usb, int on)
@@ -162,9 +163,11 @@ static irqreturn_t gpio_usbdetect_vbus_irq(int irq, void *data) 
		if (usb->notify_host_mode)

			power_supply_set_usb_otg(usb->usb_psy, 0);



		if (!usb->disable_device_mode) {

			power_supply_set_supply_type(usb->usb_psy,

						POWER_SUPPLY_TYPE_USB);

			power_supply_set_present(usb->usb_psy, vbus);

		}

	} else {

		/* notify gpio_state = LOW as disconnect */

		power_supply_set_supply_type(usb->usb_psy,
@@ -199,6 +202,8 @@ static int gpio_usbdetect_probe(struct platform_device *pdev) 
	usb->usb_psy = usb_psy;

	usb->notify_host_mode = of_property_read_bool(pdev->dev.of_node,

					"qcom,notify-host-mode");

	usb->disable_device_mode = of_property_read_bool(pdev->dev.of_node,

					"qcom,disable-device-mode");

	rc = gpio_enable_ldos(usb, 1);

	if (rc)

		return rc;