---

yaml --- r: 235372 b: refs/heads/master c: 7acc619 h: refs/heads/master v: v3
git-mirror · Mar 1, 2011 · c1ef969 · c1ef969
1 parent 07466db
commit c1ef969
Show file tree

Hide file tree

Showing 4 changed files with 79 additions and 23 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: da68ccec210c45eb99e461ad31b499b4e7043c41
+refs/heads/master: 7acc6197b76edd0b932a7cbcc6cfad0a8a87f026
diff --git a/trunk/drivers/usb/musb/musb_core.c b/trunk/drivers/usb/musb/musb_core.c
@@ -1956,6 +1956,10 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 		goto fail0;
 	}
 
+	pm_runtime_use_autosuspend(musb->controller);
+	pm_runtime_set_autosuspend_delay(musb->controller, 200);
+	pm_runtime_enable(musb->controller);
+
 	spin_lock_init(&musb->lock);
 	musb->board_mode = plat->mode;
 	musb->board_set_power = plat->set_power;
@@ -2091,6 +2095,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 	if (status < 0)
 		goto fail3;
 
+	pm_runtime_put(musb->controller);
+
 	status = musb_init_debugfs(musb);
 	if (status < 0)
 		goto fail4;
@@ -2190,9 +2196,11 @@ static int __exit musb_remove(struct platform_device *pdev)
 	 *  - Peripheral mode: peripheral is deactivated (or never-activated)
 	 *  - OTG mode: both roles are deactivated (or never-activated)
 	 */
+	pm_runtime_get_sync(musb->controller);
 	musb_exit_debugfs(musb);
 	musb_shutdown(pdev);
 
+	pm_runtime_put(musb->controller);
 	musb_free(musb);
 	iounmap(ctrl_base);
 	device_init_wakeup(&pdev->dev, 0);
@@ -2378,9 +2386,41 @@ static int musb_resume_noirq(struct device *dev)
 	return 0;
 }
 
+static int musb_runtime_suspend(struct device *dev)
+{
+	struct musb	*musb = dev_to_musb(dev);
+
+	musb_save_context(musb);
+
+	return 0;
+}
+
+static int musb_runtime_resume(struct device *dev)
+{
+	struct musb	*musb = dev_to_musb(dev);
+	static int	first = 1;
+
+	/*
+	 * When pm_runtime_get_sync called for the first time in driver
+	 * init,  some of the structure is still not initialized which is
+	 * used in restore function. But clock needs to be
+	 * enabled before any register access, so
+	 * pm_runtime_get_sync has to be called.
+	 * Also context restore without save does not make
+	 * any sense
+	 */
+	if (!first)
+		musb_restore_context(musb);
+	first = 0;
+
+	return 0;
+}
+
 static const struct dev_pm_ops musb_dev_pm_ops = {
 	.suspend	= musb_suspend,
 	.resume_noirq	= musb_resume_noirq,
+	.runtime_suspend = musb_runtime_suspend,
+	.runtime_resume = musb_runtime_resume,
 };
 
 #define MUSB_DEV_PM_OPS (&musb_dev_pm_ops)

diff --git a/trunk/drivers/usb/musb/musb_gadget.c b/trunk/drivers/usb/musb/musb_gadget.c
@@ -1821,6 +1821,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 		goto err0;
 	}
 
+	pm_runtime_get_sync(musb->controller);
+
 	DBG(3, "registering driver %s\n", driver->function);
 
 	if (musb->gadget_driver) {
@@ -1885,6 +1887,10 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 		}
 
 		hcd->self.uses_pio_for_control = 1;
+
+		if (musb->xceiv->last_event == USB_EVENT_NONE)
+			pm_runtime_put(musb->controller);
+
 	}
 
 	return 0;
@@ -1961,6 +1967,9 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 	if (!musb->gadget_driver)
 		return -EINVAL;
 
+	if (musb->xceiv->last_event == USB_EVENT_NONE)
+		pm_runtime_get_sync(musb->controller);
+
 	/*
 	 * REVISIT always use otg_set_peripheral() here too;
 	 * this needs to shut down the OTG engine.
@@ -2002,6 +2011,8 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 	if (!is_otg_enabled(musb))
 		musb_stop(musb);
 
+	pm_runtime_put(musb->controller);
+
 	return 0;
 }
 EXPORT_SYMBOL(usb_gadget_unregister_driver);

diff --git a/trunk/drivers/usb/musb/omap2430.c b/trunk/drivers/usb/musb/omap2430.c
@@ -244,6 +244,7 @@ static int musb_otg_notifications(struct notifier_block *nb,
 		if (is_otg_enabled(musb)) {
 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 			if (musb->gadget_driver) {
+				pm_runtime_get_sync(musb->controller);
 				otg_init(musb->xceiv);
 
 				if (data->interface_type ==
@@ -253,6 +254,7 @@ static int musb_otg_notifications(struct notifier_block *nb,
 			}
 #endif
 		} else {
+			pm_runtime_get_sync(musb->controller);
 			otg_init(musb->xceiv);
 			if (data->interface_type ==
 					MUSB_INTERFACE_UTMI)
@@ -263,12 +265,24 @@ static int musb_otg_notifications(struct notifier_block *nb,
 	case USB_EVENT_VBUS:
 		DBG(4, "VBUS Connect\n");
 
+		if (musb->gadget_driver)
+			pm_runtime_get_sync(musb->controller);
+
 		otg_init(musb->xceiv);
 		break;
 
 	case USB_EVENT_NONE:
 		DBG(4, "VBUS Disconnect\n");
 
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+		if (is_otg_enabled(musb))
+			if (musb->gadget_driver)
+#endif
+			{
+				pm_runtime_mark_last_busy(musb->controller);
+				pm_runtime_put_autosuspend(musb->controller);
+			}
+
 		if (data->interface_type == MUSB_INTERFACE_UTMI) {
 			if (musb->xceiv->set_vbus)
 				otg_set_vbus(musb->xceiv, 0);
@@ -300,7 +314,11 @@ static int omap2430_musb_init(struct musb *musb)
 		return -ENODEV;
 	}
 
-	omap2430_low_level_init(musb);
+	status = pm_runtime_get_sync(dev);
+	if (status < 0) {
+		dev_err(dev, "pm_runtime_get_sync FAILED");
+		goto err1;
+	}
 
 	l = musb_readl(musb->mregs, OTG_INTERFSEL);
 
@@ -331,6 +349,10 @@ static int omap2430_musb_init(struct musb *musb)
 	setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
 
 	return 0;
+
+err1:
+	pm_runtime_disable(dev);
+	return status;
 }
 
 static void omap2430_musb_enable(struct musb *musb)
@@ -407,8 +429,6 @@ static int __init omap2430_probe(struct platform_device *pdev)
 	struct musb_hdrc_platform_data	*pdata = pdev->dev.platform_data;
 	struct platform_device		*musb;
 	struct omap2430_glue		*glue;
-	int				status = 0;
-
 	int				ret = -ENOMEM;
 
 	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
@@ -454,16 +474,9 @@ static int __init omap2430_probe(struct platform_device *pdev)
 	}
 
 	pm_runtime_enable(&pdev->dev);
-	status = pm_runtime_get_sync(&pdev->dev);
-	if (status < 0) {
-		dev_err(&pdev->dev, "pm_runtime_get_sync FAILED");
-		goto err3;
-	}
 
 	return 0;
 
-err3:
-	pm_runtime_disable(&pdev->dev);
 err2:
 	platform_device_put(musb);
 
@@ -489,39 +502,31 @@ static int __exit omap2430_remove(struct platform_device *pdev)
 
 #ifdef CONFIG_PM
 
-static int omap2430_suspend(struct device *dev)
+static int omap2430_runtime_suspend(struct device *dev)
 {
 	struct omap2430_glue		*glue = dev_get_drvdata(dev);
 	struct musb			*musb = glue_to_musb(glue);
 
 	omap2430_low_level_exit(musb);
 	otg_set_suspend(musb->xceiv, 1);
 
-	if (!pm_runtime_suspended(dev) && dev->bus && dev->bus->pm &&
-			dev->bus->pm->runtime_suspend)
-		dev->bus->pm->runtime_suspend(dev);
-
 	return 0;
 }
 
-static int omap2430_resume(struct device *dev)
+static int omap2430_runtime_resume(struct device *dev)
 {
 	struct omap2430_glue		*glue = dev_get_drvdata(dev);
 	struct musb			*musb = glue_to_musb(glue);
 
-	if (!pm_runtime_suspended(dev) && dev->bus && dev->bus->pm &&
-			dev->bus->pm->runtime_resume)
-		dev->bus->pm->runtime_resume(dev);
-
 	omap2430_low_level_init(musb);
 	otg_set_suspend(musb->xceiv, 0);
 
 	return 0;
 }
 
 static struct dev_pm_ops omap2430_pm_ops = {
-	.suspend	= omap2430_suspend,
-	.resume		= omap2430_resume,
+	.runtime_suspend = omap2430_runtime_suspend,
+	.runtime_resume = omap2430_runtime_resume,
 };
 
 #define DEV_PM_OPS	(&omap2430_pm_ops)