5 files changed, 71 insertions, 18 deletions

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 4a518ff12310..ba13529cbd52 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1028,18 +1028,22 @@ void musb_start(struct musb *musb)
 {
 	void __iomem    *regs = musb->mregs;
 	u8              devctl = musb_readb(regs, MUSB_DEVCTL);
+	u8		power;
 
 	dev_dbg(musb->controller, "<== devctl %02x\n", devctl);
 
 	musb_enable_interrupts(musb);
 	musb_writeb(regs, MUSB_TESTMODE, 0);
 
-	/* put into basic highspeed mode and start session */
-	musb_writeb(regs, MUSB_POWER, MUSB_POWER_ISOUPDATE
-			| MUSB_POWER_HSENAB
-			/* ENSUSPEND wedges tusb */
-			/* | MUSB_POWER_ENSUSPEND */
-		   );
+	power = MUSB_POWER_ISOUPDATE;
+	/*
+	 * treating UNKNOWN as unspecified maximum speed, in which case
+	 * we will default to high-speed.
+	 */
+	if (musb->config->maximum_speed == USB_SPEED_HIGH ||
+			musb->config->maximum_speed == USB_SPEED_UNKNOWN)
+		power |= MUSB_POWER_HSENAB;
+	musb_writeb(regs, MUSB_POWER, power);
 
 	musb->is_active = 0;
 	devctl = musb_readb(regs, MUSB_DEVCTL);
@@ -1771,13 +1775,20 @@ musb_vbus_show(struct device *dev, struct device_attribute *attr, char *buf)
 	unsigned long	flags;
 	unsigned long	val;
 	int		vbus;
+	u8		devctl;
 
 	spin_lock_irqsave(&musb->lock, flags);
 	val = musb->a_wait_bcon;
-	/* FIXME get_vbus_status() is normally #defined as false...
-	 * and is effectively TUSB-specific.
-	 */
 	vbus = musb_platform_get_vbus_status(musb);
+	if (vbus < 0) {
+		/* Use default MUSB method by means of DEVCTL register */
+		devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+		if ((devctl & MUSB_DEVCTL_VBUS)
+				== (3 << MUSB_DEVCTL_VBUS_SHIFT))
+			vbus = 1;
+		else
+			vbus = 0;
+	}
 	spin_unlock_irqrestore(&musb->lock, flags);
 
 	return sprintf(buf, "Vbus %s, timeout %lu msec\n",
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 4b886d0f6bdf..2337d7a7d62d 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -579,7 +579,7 @@ static inline int  musb_platform_recover(struct musb *musb)
 static inline int musb_platform_get_vbus_status(struct musb *musb)
 {
 	if (!musb->ops->vbus_status)
-		return 0;
+		return -EINVAL;
 
 	return musb->ops->vbus_status(musb);
 }
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 84512d1d5eee..eeb7d9ecf7df 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -666,7 +666,7 @@ static int get_musb_port_mode(struct device *dev)
 {
 	enum usb_dr_mode mode;
 
-	mode = of_usb_get_dr_mode(dev->of_node);
+	mode = usb_get_dr_mode(dev);
 	switch (mode) {
 	case USB_DR_MODE_HOST:
 		return MUSB_PORT_MODE_HOST;
@@ -747,6 +747,19 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue,
 	if (!ret && val)
 		config->multipoint = true;
 
+	config->maximum_speed = usb_get_maximum_speed(&parent->dev);
+	switch (config->maximum_speed) {
+	case USB_SPEED_LOW:
+	case USB_SPEED_FULL:
+		break;
+	case USB_SPEED_SUPER:
+		dev_warn(dev, "ignore incorrect maximum_speed "
+				"(super-speed) setting in dts");
+		/* fall through */
+	default:
+		config->maximum_speed = USB_SPEED_HIGH;
+	}
+
 	ret = platform_device_add_data(musb, &pdata, sizeof(pdata));
 	if (ret) {
 		dev_err(dev, "failed to add platform_data\n");
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 70f2b8a2e6cf..1bd9232ff76f 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -391,9 +391,20 @@ static int omap2430_musb_init(struct musb *musb)
 	}
 	musb->isr = omap2430_musb_interrupt;
 
+	/*
+	 * Enable runtime PM for musb parent (this driver). We can't
+	 * do it earlier as struct musb is not yet allocated and we
+	 * need to touch the musb registers for runtime PM.
+	 */
+	pm_runtime_enable(glue->dev);
+	status = pm_runtime_get_sync(glue->dev);
+	if (status < 0)
+		goto err1;
+
 	status = pm_runtime_get_sync(dev);
 	if (status < 0) {
 		dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
+		pm_runtime_put_sync(glue->dev);
 		goto err1;
 	}
 
@@ -426,6 +437,7 @@ static int omap2430_musb_init(struct musb *musb)
 	phy_power_on(musb->phy);
 
 	pm_runtime_put_noidle(musb->controller);
+	pm_runtime_put_noidle(glue->dev);
 	return 0;
 
 err1:
@@ -626,7 +638,11 @@ static int omap2430_probe(struct platform_device *pdev)
 		goto err2;
 	}
 
-	pm_runtime_enable(&pdev->dev);
+	/*
+	 * Note that we cannot enable PM runtime yet for this
+	 * driver as we need struct musb initialized first.
+	 * See omap2430_musb_init above.
+	 */
 
 	ret = platform_device_add(musb);
 	if (ret) {
@@ -675,11 +691,12 @@ static int omap2430_runtime_resume(struct device *dev)
 	struct omap2430_glue		*glue = dev_get_drvdata(dev);
 	struct musb			*musb = glue_to_musb(glue);
 
-	if (musb) {
-		omap2430_low_level_init(musb);
-		musb_writel(musb->mregs, OTG_INTERFSEL,
-				musb->context.otg_interfsel);
-	}
+	if (!musb)
+		return -EPROBE_DEFER;
+
+	omap2430_low_level_init(musb);
+	musb_writel(musb->mregs, OTG_INTERFSEL,
+		    musb->context.otg_interfsel);
 
 	return 0;
 }
diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c
index f9f6304ad854..d9b0dc461439 100644
--- a/drivers/usb/musb/sunxi.c
+++ b/drivers/usb/musb/sunxi.c
@@ -341,6 +341,16 @@ static void sunxi_musb_disable(struct musb *musb)
 	clear_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags);
 }
 
+struct dma_controller *sunxi_musb_dma_controller_create(struct musb *musb,
+						    void __iomem *base)
+{
+	return NULL;
+}
+
+void sunxi_musb_dma_controller_destroy(struct dma_controller *c)
+{
+}
+
 /*
  * sunxi musb register layout
  * 0x00 - 0x17	fifo regs, 1 long per fifo
@@ -566,6 +576,8 @@ static const struct musb_platform_ops sunxi_musb_ops = {
 	.writeb		= sunxi_musb_writeb,
 	.readw		= sunxi_musb_readw,
 	.writew		= sunxi_musb_writew,
+	.dma_init	= sunxi_musb_dma_controller_create,
+	.dma_exit	= sunxi_musb_dma_controller_destroy,
 	.set_vbus	= sunxi_musb_set_vbus,
 	.pre_root_reset_end = sunxi_musb_pre_root_reset_end,
 	.post_root_reset_end = sunxi_musb_post_root_reset_end,
@@ -617,7 +629,7 @@ static int sunxi_musb_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	memset(&pdata, 0, sizeof(pdata));
-	switch (of_usb_get_dr_mode(np)) {
+	switch (usb_get_dr_mode(&pdev->dev)) {
 #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST
 	case USB_DR_MODE_HOST:
 		pdata.mode = MUSB_PORT_MODE_HOST;