[PATCH 3/3] usb: musb-new: sunxi: make compatible with UDC/DM gadget model

[Sam Edwards <cfsworks@gmail.com>]

Since many sunxi boards do not implement a `board_usb_init`, it's
better if we just make the sunxi USB driver compatible with the
DM gadget model, as many other musb-new variants already are.

This change has been verified working on a T113s.

Signed-off-by: Sam Edwards <CFSworks@gmail.com>
---
 drivers/usb/musb-new/sunxi.c | 60 +++++++++++++++++++++++-------------
 1 file changed, 38 insertions(+), 22 deletions(-)

diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c
index 65a528e229..ac6d1a41bb 100644
--- a/drivers/usb/musb-new/sunxi.c
+++ b/drivers/usb/musb-new/sunxi.c
@@ -432,6 +432,16 @@ static struct musb_hdrc_config musb_config_h3 = {
 	.ram_bits	= SUNXI_MUSB_RAM_BITS,
 };
 
+#if CONFIG_IS_ENABLED(DM_USB_GADGET)
+int dm_usb_gadget_handle_interrupts(struct udevice *dev) {
+	struct sunxi_glue *glue = dev_get_priv(dev);
+	struct musb_host_data *host = &glue->mdata;
+
+	host->host->isr(0, host->host);
+	return 0;
+}
+#endif
+
 static int musb_usb_probe(struct udevice *dev)
 {
 	struct sunxi_glue *glue = dev_get_priv(dev);
@@ -440,10 +450,6 @@ static int musb_usb_probe(struct udevice *dev)
 	void *base = dev_read_addr_ptr(dev);
 	int ret;
 
-#ifdef CONFIG_USB_MUSB_HOST
-	struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
-#endif
-
 	if (!base)
 		return -EINVAL;
 
@@ -474,25 +480,35 @@ static int musb_usb_probe(struct udevice *dev)
 	pdata.platform_ops = &sunxi_musb_ops;
 	pdata.config = glue->cfg->config;
 
-#ifdef CONFIG_USB_MUSB_HOST
-	priv->desc_before_addr = true;
-
-	pdata.mode = MUSB_HOST;
-	host->host = musb_init_controller(&pdata, &glue->dev, base);
-	if (!host->host)
-		return -EIO;
-
-	ret = musb_lowlevel_init(host);
-	if (!ret)
-		printf("Allwinner mUSB OTG (Host)\n");
-#else
-	pdata.mode = MUSB_PERIPHERAL;
-	host->host = musb_register(&pdata, &glue->dev, base);
-	if (IS_ERR_OR_NULL(host->host))
-		return -EIO;
+	if (IS_ENABLED(CONFIG_USB_MUSB_HOST)) {
+		struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
+		priv->desc_before_addr = true;
+
+		pdata.mode = MUSB_HOST;
+		host->host = musb_init_controller(&pdata, &glue->dev, base);
+		if (!host->host)
+			return -EIO;
+
+		ret = musb_lowlevel_init(host);
+		if (!ret)
+			printf("Allwinner mUSB OTG (Host)\n");
+	} else if (CONFIG_IS_ENABLED(DM_USB_GADGET)) {
+		pdata.mode = MUSB_PERIPHERAL;
+		host->host = musb_init_controller(&pdata, &glue->dev, base);
+		if (!host->host)
+			return -EIO;
+
+		ret = usb_add_gadget_udc(&glue->dev, &host->host->g);
+		if (!ret)
+			printf("Allwinner mUSB OTG (Peripheral)\n");
+	} else {
+		pdata.mode = MUSB_PERIPHERAL;
+		host->host = musb_register(&pdata, &glue->dev, base);
+		if (IS_ERR_OR_NULL(host->host))
+			return -EIO;
 
-	printf("Allwinner mUSB OTG (Peripheral)\n");
-#endif
+		printf("Allwinner mUSB OTG (Peripheral)\n");
+	}
 
 	return ret;
 }
-- 
2.39.2