[U-Boot] [PATCH 05/10] drivers: usb: dwc3: add ti dwc3 misc driver for wrapper

[Mugunthan V N]

Add a misc driver for DWC3 wrapper, so that based on dr_mode the
USB devices can bind to USB host or USB device drivers.

Signed-off-by: Mugunthan V N <mugunthanvnm at ti.com>
---
 drivers/usb/dwc3/core.h      |  4 ++++
 drivers/usb/dwc3/dwc3-omap.c | 52 ++++++++++++++++++++++++++++++++++++++++++++
 drivers/usb/dwc3/gadget.c    |  2 +-
 3 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 72d2fcd..24f03e4 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -713,7 +713,11 @@ struct dwc3 {
 	/* device lock */
 	spinlock_t		lock;
 
+#ifndef CONFIG_DM_USB
 	struct device		*dev;
+#else
+	struct udevice		*dev;
+#endif
 
 	struct platform_device	*xhci;
 	struct resource		xhci_resources[DWC3_XHCI_RESOURCES_NUM];
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 31d15f5..fef7deb 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -27,6 +27,11 @@
 
 #include "linux-compat.h"
 
+#include <libfdt.h>
+#include <dm/device.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
 /*
  * All these registers belong to OMAP's Wrapper around the
  * DesignWare USB3 Core.
@@ -134,6 +139,8 @@ struct dwc3_omap {
 	u32			index;
 };
 
+#ifndef CONFIG_DM_USB
+
 static LIST_HEAD(dwc3_omap_list);
 
 static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)
@@ -461,3 +468,48 @@ MODULE_ALIAS("platform:omap-dwc3");
 MODULE_AUTHOR("Felipe Balbi <balbi at ti.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer");
+
+#else
+
+static int ti_dwc3_wrapper_bind(struct udevice *parent)
+{
+	const void *fdt = gd->fdt_blob;
+	int node;
+
+	for (node = fdt_first_subnode(fdt, parent->of_offset); node > 0;
+	     node = fdt_next_subnode(fdt, node)) {
+		const char *name = fdt_get_name(fdt, node, NULL);
+		enum usb_dr_mode dr_mode;
+
+		if (strncmp(name, "usb@", 4))
+			continue;
+
+		dr_mode = usb_get_dr_mode(node);
+		switch (dr_mode) {
+		case USB_DR_MODE_PERIPHERAL:
+		case USB_DR_MODE_OTG:
+			/* Bind MUSB device */
+			break;
+		case USB_DR_MODE_HOST:
+			/* Bind MUSB host */
+			break;
+		default:
+			break;
+		};
+	}
+	return 0;
+}
+
+static const struct udevice_id ti_dwc3_ids[] = {
+	{ .compatible = "ti,am437x-dwc3" },
+	{ }
+};
+
+U_BOOT_DRIVER(ti_dwc3_wrapper) = {
+	.name	= "ti-dwc3-wrapper",
+	.id	= UCLASS_MISC,
+	.of_match = ti_dwc3_ids,
+	.bind = ti_dwc3_wrapper_bind,
+};
+
+#endif /* CONFIG_DM_USB */
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 25ccc01..d6fcea7 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2611,7 +2611,7 @@ int dwc3_gadget_init(struct dwc3 *dwc)
 	if (ret)
 		goto err4;
 
-	ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget);
+	ret = usb_add_gadget_udc((struct device *)dwc->dev, &dwc->gadget);
 	if (ret) {
 		dev_err(dwc->dev, "failed to register udc\n");
 		goto err4;
-- 
2.7.2.333.g70bd996