Commit 662c738d authored by Heiko Stübner's avatar Heiko Stübner Committed by Felipe Balbi
Browse files

usb: otg: gpio_vbus: Add otg transceiver events and notifiers 



Commit 9ad63986 (pda_power: Add support for using otg transceiver events)
converted the pda-power driver to use otg events to determine the status
of the power supply.

As gpio-vbus didn't use otg events until now, this change breaks setups
of pda-power with a gpio-vbus transceiver.

This patch adds the necessary otg events and notifiers to gpio-vbus.

Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
Reviewed-by: default avatarDima Zavin <dima@android.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 92b0abf8

drivers/usb/otg/gpio_vbus.c

+14 −1
Original line number Diff line number Diff line
@@ -96,7 +96,7 @@ static void gpio_vbus_work(struct work_struct *work) 
	struct gpio_vbus_data *gpio_vbus =

		container_of(work, struct gpio_vbus_data, work);

	struct gpio_vbus_mach_info *pdata = gpio_vbus->dev->platform_data;

	int gpio;

	int gpio, status;



	if (!gpio_vbus->phy.otg->gadget)

		return;
@@ -108,7 +108,9 @@ static void gpio_vbus_work(struct work_struct *work) 
	 */

	gpio = pdata->gpio_pullup;

	if (is_vbus_powered(pdata)) {

		status = USB_EVENT_VBUS;

		gpio_vbus->phy.state = OTG_STATE_B_PERIPHERAL;

		gpio_vbus->phy.last_event = status;

		usb_gadget_vbus_connect(gpio_vbus->phy.otg->gadget);



		/* drawing a "unit load" is *always* OK, except for OTG */
@@ -117,6 +119,9 @@ static void gpio_vbus_work(struct work_struct *work) 
		/* optionally enable D+ pullup */

		if (gpio_is_valid(gpio))

			gpio_set_value(gpio, !pdata->gpio_pullup_inverted);



		atomic_notifier_call_chain(&gpio_vbus->phy.notifier,

					   status, gpio_vbus->phy.otg->gadget);

	} else {

		/* optionally disable D+ pullup */

		if (gpio_is_valid(gpio))
@@ -125,7 +130,12 @@ static void gpio_vbus_work(struct work_struct *work) 
		set_vbus_draw(gpio_vbus, 0);



		usb_gadget_vbus_disconnect(gpio_vbus->phy.otg->gadget);

		status = USB_EVENT_NONE;

		gpio_vbus->phy.state = OTG_STATE_B_IDLE;

		gpio_vbus->phy.last_event = status;



		atomic_notifier_call_chain(&gpio_vbus->phy.notifier,

					   status, gpio_vbus->phy.otg->gadget);

	}

}
@@ -287,6 +297,9 @@ static int __init gpio_vbus_probe(struct platform_device *pdev) 
			irq, err);

		goto err_irq;

	}



	ATOMIC_INIT_NOTIFIER_HEAD(&gpio_vbus->phy.notifier);



	INIT_WORK(&gpio_vbus->work, gpio_vbus_work);



	gpio_vbus->vbus_draw = regulator_get(&pdev->dev, "vbus_draw");

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