---

yaml --- r: 325991 b: refs/heads/master c: 5ec4059 h: refs/heads/master i: 325989: ced38b3 325987: 9f864a8 325983: fa10887 v: v3
git-mirror · Sep 11, 2012 · 46549f1 · 46549f1
1 parent 2650985
commit 46549f1
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Showing 3 changed files with 55 additions and 8 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 94715d59453dd3aba588fd6b6881f4cb4fac5440
+refs/heads/master: 5ec40590765b8571ae6218f1bc421ec63d3e91c2
diff --git a/trunk/drivers/usb/musb/omap2430.c b/trunk/drivers/usb/musb/omap2430.c
@@ -45,13 +45,34 @@ struct omap2430_glue {
 	struct platform_device	*musb;
 	enum omap_musb_vbus_id_status status;
 	struct work_struct	omap_musb_mailbox_work;
+	u32 __iomem		*control_otghs;
 };
 #define glue_to_musb(g)		platform_get_drvdata(g->musb)
 
 struct omap2430_glue		*_glue;
 
 static struct timer_list musb_idle_timer;
 
+/**
+ * omap4_usb_phy_mailbox - write to usb otg mailbox
+ * @glue: struct omap2430_glue *
+ * @val: the value to be written to the mailbox
+ *
+ * On detection of a device (ID pin is grounded), this API should be called
+ * to set AVALID, VBUSVALID and ID pin is grounded.
+ *
+ * When OMAP is connected to a host (OMAP in device mode), this API
+ * is called to set AVALID, VBUSVALID and ID pin in high impedance.
+ *
+ * XXX: This function will be removed once we have a seperate driver for
+ * control module
+ */
+static void omap4_usb_phy_mailbox(struct omap2430_glue *glue, u32 val)
+{
+	if (glue->control_otghs)
+		writel(val, glue->control_otghs);
+}
+
 static void musb_do_idle(unsigned long _musb)
 {
 	struct musb	*musb = (void *)_musb;
@@ -247,6 +268,7 @@ EXPORT_SYMBOL_GPL(omap_musb_mailbox);
 
 static void omap_musb_set_mailbox(struct omap2430_glue *glue)
 {
+	u32 val;
 	struct musb *musb = glue_to_musb(glue);
 	struct device *dev = musb->controller;
 	struct musb_hdrc_platform_data *pdata = dev->platform_data;
@@ -262,7 +284,8 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue)
 		musb->xceiv->last_event = USB_EVENT_ID;
 		if (musb->gadget_driver) {
 			pm_runtime_get_sync(dev);
-			usb_phy_init(musb->xceiv);
+			val = AVALID | VBUSVALID;
+			omap4_usb_phy_mailbox(glue, val);
 			omap2430_musb_set_vbus(musb, 1);
 		}
 		break;
@@ -275,7 +298,8 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue)
 		musb->xceiv->last_event = USB_EVENT_VBUS;
 		if (musb->gadget_driver)
 			pm_runtime_get_sync(dev);
-		usb_phy_init(musb->xceiv);
+		val = IDDIG | AVALID | VBUSVALID;
+		omap4_usb_phy_mailbox(glue, val);
 		break;
 
 	case OMAP_MUSB_ID_FLOAT:
@@ -292,7 +316,8 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue)
 			if (musb->xceiv->otg->set_vbus)
 				otg_set_vbus(musb->xceiv->otg, 0);
 		}
-		usb_phy_shutdown(musb->xceiv);
+		val = SESSEND | IDDIG;
+		omap4_usb_phy_mailbox(glue, val);
 		break;
 	default:
 		dev_dbg(dev, "ID float\n");
@@ -367,6 +392,7 @@ static int omap2430_musb_init(struct musb *musb)
 static void omap2430_musb_enable(struct musb *musb)
 {
 	u8		devctl;
+	u32		val;
 	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
 	struct device *dev = musb->controller;
 	struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
@@ -376,7 +402,8 @@ static void omap2430_musb_enable(struct musb *musb)
 	switch (glue->status) {
 
 	case OMAP_MUSB_ID_GROUND:
-		usb_phy_init(musb->xceiv);
+		val = AVALID | VBUSVALID;
+		omap4_usb_phy_mailbox(glue, val);
 		if (data->interface_type != MUSB_INTERFACE_UTMI)
 			break;
 		devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
@@ -395,7 +422,8 @@ static void omap2430_musb_enable(struct musb *musb)
 		break;
 
 	case OMAP_MUSB_VBUS_VALID:
-		usb_phy_init(musb->xceiv);
+		val = IDDIG | AVALID | VBUSVALID;
+		omap4_usb_phy_mailbox(glue, val);
 		break;
 
 	default:
@@ -405,11 +433,14 @@ static void omap2430_musb_enable(struct musb *musb)
 
 static void omap2430_musb_disable(struct musb *musb)
 {
+	u32 val;
 	struct device *dev = musb->controller;
 	struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 
-	if (glue->status != OMAP_MUSB_UNKNOWN)
-		usb_phy_shutdown(musb->xceiv);
+	if (glue->status != OMAP_MUSB_UNKNOWN) {
+		val = SESSEND | IDDIG;
+		omap4_usb_phy_mailbox(glue, val);
+	}
 }
 
 static int omap2430_musb_exit(struct musb *musb)
@@ -441,6 +472,7 @@ static int __devinit omap2430_probe(struct platform_device *pdev)
 	struct musb_hdrc_platform_data	*pdata = pdev->dev.platform_data;
 	struct platform_device		*musb;
 	struct omap2430_glue		*glue;
+	struct resource			*res;
 	int				ret = -ENOMEM;
 
 	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
@@ -463,6 +495,12 @@ static int __devinit omap2430_probe(struct platform_device *pdev)
 	glue->musb			= musb;
 	glue->status			= OMAP_MUSB_UNKNOWN;
 
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+
+	glue->control_otghs = devm_request_and_ioremap(&pdev->dev, res);
+	if (glue->control_otghs == NULL)
+		dev_dbg(&pdev->dev, "Failed to obtain control memory\n");
+
 	pdata->platform_ops		= &omap2430_ops;
 
 	platform_set_drvdata(pdev, glue);

diff --git a/trunk/drivers/usb/musb/omap2430.h b/trunk/drivers/usb/musb/omap2430.h
@@ -49,4 +49,13 @@
 #define OTG_FORCESTDBY		0x414
 #	define	ENABLEFORCE		(1 << 0)
 
+/*
+ * Control Module bit definitions
+ * XXX: Will be removed once we have a driver for control module.
+ */
+#define	AVALID				BIT(0)
+#define	BVALID				BIT(1)
+#define	VBUSVALID			BIT(2)
+#define	SESSEND				BIT(3)
+#define	IDDIG				BIT(4)
 #endif	/* __MUSB_OMAP243X_H__ */