Merge tag 'usb-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB 3.5-rc1 changes from Greg Kroah-Hartman:
 "Here is the big USB 3.5-rc1 pull request for the 3.5-rc1 merge window.

  It's touches a lot of different parts of the kernel, all USB drivers,
  due to some API cleanups (getting rid of the ancient err() macro) and
  some changes that are needed for USB 3.0 power management updates.

  There are also lots of new drivers, pimarily gadget, but others as
  well.  We deleted a staging driver, which was nice, and finally
  dropped the obsolete usbfs code, which will make Al happy to never
  have to touch that again.

  There were some build errors in the tree that linux-next found a few
  days ago, but those were fixed by the most recent changes (all were
  due to us not building with CONFIG_PM disabled.)

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'usb-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (477 commits)
  xhci: Fix DIV_ROUND_UP compile error.
  xhci: Fix compile with CONFIG_USB_SUSPEND=n
  USB: Fix core compile with CONFIG_USB_SUSPEND=n
  brcm80211: Fix compile error for .disable_hub_initiated_lpm.
  Revert "USB: EHCI: work around bug in the Philips ISP1562 controller"
  MAINTAINERS: Add myself as maintainer to the USB PHY Layer
  USB: EHCI: fix command register configuration lost problem
  USB: Remove races in devio.c
  USB: ehci-platform: remove update_device
  USB: Disable hub-initiated LPM for comms devices.
  xhci: Add Intel U1/U2 timeout policy.
  xhci: Add infrastructure for host-specific LPM policies.
  USB: Add macros for interrupt endpoint types.
  xhci: Reserve one command for USB3 LPM disable.
  xhci: Some Evaluate Context commands must succeed.
  USB: Disable USB 3.0 LPM in critical sections.
  USB: Add support to enable/disable USB3 link states.
  USB: Allow drivers to disable hub-initiated LPM.
  USB: Calculate USB 3.0 exit latencies for LPM.
  USB: Refactor code to set LPM support flag.
  ...

Conflicts:
	arch/arm/mach-exynos/mach-nuri.c
	arch/arm/mach-exynos/mach-universal_c210.c
	drivers/net/wireless/ath/ath6kl/usb.c

1 files changed, 63 insertions, 18 deletions

diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c
index a0a2178974f..bde6298a969 100644
--- a/drivers/usb/otg/gpio_vbus.c
+++ b/drivers/usb/otg/gpio_vbus.c
@@ -37,7 +37,9 @@ struct gpio_vbus_data {
 	struct regulator       *vbus_draw;
 	int			vbus_draw_enabled;
 	unsigned		mA;
-	struct work_struct	work;
+	struct delayed_work	work;
+	int			vbus;
+	int			irq;
 };
 
 
@@ -51,8 +53,7 @@ struct gpio_vbus_data {
  * edges might be workable.
  */
 #define VBUS_IRQ_FLAGS \
-	( IRQF_SAMPLE_RANDOM | IRQF_SHARED \
-	| IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING )
+	(IRQF_SHARED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)
 
 
 /* interface to regulator framework */
@@ -94,20 +95,26 @@ static int is_vbus_powered(struct gpio_vbus_mach_info *pdata)
 static void gpio_vbus_work(struct work_struct *work)
 {
 	struct gpio_vbus_data *gpio_vbus =
-		container_of(work, struct gpio_vbus_data, work);
+		container_of(work, struct gpio_vbus_data, work.work);
 	struct gpio_vbus_mach_info *pdata = gpio_vbus->dev->platform_data;
-	int gpio, status;
+	int gpio, status, vbus;
 
 	if (!gpio_vbus->phy.otg->gadget)
 		return;
 
+	vbus = is_vbus_powered(pdata);
+	if ((vbus ^ gpio_vbus->vbus) == 0)
+		return;
+	gpio_vbus->vbus = vbus;
+
 	/* Peripheral controllers which manage the pullup themselves won't have
 	 * gpio_pullup configured here.  If it's configured here, we'll do what
 	 * isp1301_omap::b_peripheral() does and enable the pullup here... although
 	 * that may complicate usb_gadget_{,dis}connect() support.
 	 */
 	gpio = pdata->gpio_pullup;
-	if (is_vbus_powered(pdata)) {
+
+	if (vbus) {
 		status = USB_EVENT_VBUS;
 		gpio_vbus->phy.state = OTG_STATE_B_PERIPHERAL;
 		gpio_vbus->phy.last_event = status;
@@ -152,7 +159,7 @@ static irqreturn_t gpio_vbus_irq(int irq, void *data)
 		otg->gadget ? otg->gadget->name : "none");
 
 	if (otg->gadget)
-		schedule_work(&gpio_vbus->work);
+		schedule_delayed_work(&gpio_vbus->work, msecs_to_jiffies(100));
 
 	return IRQ_HANDLED;
 }
@@ -166,12 +173,11 @@ static int gpio_vbus_set_peripheral(struct usb_otg *otg,
 	struct gpio_vbus_data *gpio_vbus;
 	struct gpio_vbus_mach_info *pdata;
 	struct platform_device *pdev;
-	int gpio, irq;
+	int gpio;
 
 	gpio_vbus = container_of(otg->phy, struct gpio_vbus_data, phy);
 	pdev = to_platform_device(gpio_vbus->dev);
 	pdata = gpio_vbus->dev->platform_data;
-	irq = gpio_to_irq(pdata->gpio_vbus);
 	gpio = pdata->gpio_pullup;
 
 	if (!gadget) {
@@ -195,7 +201,8 @@ static int gpio_vbus_set_peripheral(struct usb_otg *otg,
 	dev_dbg(&pdev->dev, "registered gadget '%s'\n", gadget->name);
 
 	/* initialize connection state */
-	gpio_vbus_irq(irq, pdev);
+	gpio_vbus->vbus = 0; /* start with disconnected */
+	gpio_vbus_irq(gpio_vbus->irq, pdev);
 	return 0;
 }
 
@@ -235,6 +242,7 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 	struct gpio_vbus_data *gpio_vbus;
 	struct resource *res;
 	int err, gpio, irq;
+	unsigned long irqflags;
 
 	if (!pdata || !gpio_is_valid(pdata->gpio_vbus))
 		return -EINVAL;
@@ -271,10 +279,13 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (res) {
 		irq = res->start;
-		res->flags &= IRQF_TRIGGER_MASK;
-		res->flags |= IRQF_SAMPLE_RANDOM | IRQF_SHARED;
-	} else
+		irqflags = (res->flags & IRQF_TRIGGER_MASK) | IRQF_SHARED;
+	} else {
 		irq = gpio_to_irq(gpio);
+		irqflags = VBUS_IRQ_FLAGS;
+	}
+
+	gpio_vbus->irq = irq;
 
 	/* if data line pullup is in use, initialize it to "not pulling up" */
 	gpio = pdata->gpio_pullup;
@@ -290,8 +301,7 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 		gpio_direction_output(gpio, pdata->gpio_pullup_inverted);
 	}
 
-	err = request_irq(irq, gpio_vbus_irq, VBUS_IRQ_FLAGS,
-		"vbus_detect", pdev);
+	err = request_irq(irq, gpio_vbus_irq, irqflags, "vbus_detect", pdev);
 	if (err) {
 		dev_err(&pdev->dev, "can't request irq %i, err: %d\n",
 			irq, err);
@@ -300,7 +310,7 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 
 	ATOMIC_INIT_NOTIFIER_HEAD(&gpio_vbus->phy.notifier);
 
-	INIT_WORK(&gpio_vbus->work, gpio_vbus_work);
+	INIT_DELAYED_WORK(&gpio_vbus->work, gpio_vbus_work);
 
 	gpio_vbus->vbus_draw = regulator_get(&pdev->dev, "vbus_draw");
 	if (IS_ERR(gpio_vbus->vbus_draw)) {
@@ -317,9 +327,12 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 		goto err_otg;
 	}
 
+	device_init_wakeup(&pdev->dev, pdata->wakeup);
+
 	return 0;
 err_otg:
-	free_irq(irq, &pdev->dev);
+	regulator_put(gpio_vbus->vbus_draw);
+	free_irq(irq, pdev);
 err_irq:
 	if (gpio_is_valid(pdata->gpio_pullup))
 		gpio_free(pdata->gpio_pullup);
@@ -337,11 +350,13 @@ static int __exit gpio_vbus_remove(struct platform_device *pdev)
 	struct gpio_vbus_mach_info *pdata = pdev->dev.platform_data;
 	int gpio = pdata->gpio_vbus;
 
+	device_init_wakeup(&pdev->dev, 0);
+	cancel_delayed_work_sync(&gpio_vbus->work);
 	regulator_put(gpio_vbus->vbus_draw);
 
 	usb_set_transceiver(NULL);
 
-	free_irq(gpio_to_irq(gpio), &pdev->dev);
+	free_irq(gpio_vbus->irq, pdev);
 	if (gpio_is_valid(pdata->gpio_pullup))
 		gpio_free(pdata->gpio_pullup);
 	gpio_free(gpio);
@@ -352,6 +367,33 @@ static int __exit gpio_vbus_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int gpio_vbus_pm_suspend(struct device *dev)
+{
+	struct gpio_vbus_data *gpio_vbus = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(gpio_vbus->irq);
+
+	return 0;
+}
+
+static int gpio_vbus_pm_resume(struct device *dev)
+{
+	struct gpio_vbus_data *gpio_vbus = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(gpio_vbus->irq);
+
+	return 0;
+}
+
+static const struct dev_pm_ops gpio_vbus_dev_pm_ops = {
+	.suspend	= gpio_vbus_pm_suspend,
+	.resume		= gpio_vbus_pm_resume,
+};
+#endif
+
 /* NOTE:  the gpio-vbus device may *NOT* be hotplugged */
 
 MODULE_ALIAS("platform:gpio-vbus");
@@ -360,6 +402,9 @@ static struct platform_driver gpio_vbus_driver = {
 	.driver = {
 		.name  = "gpio-vbus",
 		.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm = &gpio_vbus_dev_pm_ops,
+#endif
 	},
 	.remove  = __exit_p(gpio_vbus_remove),
 };