openwrt/target/linux/bcm53xx/patches-3.18/811-USB-bcma-use-separated-function-for-USB-2.0-initiali.patch

From 4aed231f49954114d5ae23e97789e9aa540a0b70 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 16 Jun 2015 12:52:07 +0200
Subject: [PATCH] USB: bcma: use separated function for USB 2.0 initialization
MIME-Version: 1.0
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This will allow adding USB 3.0 (XHCI) support cleanly.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
 drivers/usb/host/bcma-hcd.c | 51 +++++++++++++++++++++++++++++++--------------
 1 file changed, 35 insertions(+), 16 deletions(-)

--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -34,6 +34,7 @@ MODULE_DESCRIPTION("Common USB driver fo
 MODULE_LICENSE("GPL");
 
 struct bcma_hcd_device {
+	struct bcma_device *core;
 	struct platform_device *ehci_dev;
 	struct platform_device *ohci_dev;
 };
@@ -293,27 +294,16 @@ err_alloc:
 	return ERR_PTR(ret);
 }
 
-static int bcma_hcd_probe(struct bcma_device *dev)
+static int bcma_hcd_usb20_init(struct bcma_hcd_device *usb_dev)
 {
-	int err;
+	struct bcma_device *dev = usb_dev->core;
+	struct bcma_chipinfo *chipinfo = &dev->bus->chipinfo;
 	u32 ohci_addr;
-	struct bcma_hcd_device *usb_dev;
-	struct bcma_chipinfo *chipinfo;
-
-	chipinfo = &dev->bus->chipinfo;
-
-	/* TODO: Probably need checks here; is the core connected? */
+	int err;
 
 	if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
 		return -EOPNOTSUPP;
 
-	usb_dev = devm_kzalloc(&dev->dev, sizeof(struct bcma_hcd_device),
-			       GFP_KERNEL);
-	if (!usb_dev)
-		return -ENOMEM;
-
-	bcma_hci_platform_power_gpio(dev, true);
-
 	switch (dev->id.id) {
 	case BCMA_CORE_NS_USB20:
 		bcma_hcd_init_chip_arm(dev);
@@ -346,7 +336,6 @@ static int bcma_hcd_probe(struct bcma_de
 		goto err_unregister_ohci_dev;
 	}
 
-	bcma_set_drvdata(dev, usb_dev);
 	return 0;
 
 err_unregister_ohci_dev:
@@ -354,6 +343,36 @@ err_unregister_ohci_dev:
 	return err;
 }
 
+static int bcma_hcd_probe(struct bcma_device *dev)
+{
+	int err;
+	struct bcma_hcd_device *usb_dev;
+
+	/* TODO: Probably need checks here; is the core connected? */
+
+	usb_dev = devm_kzalloc(&dev->dev, sizeof(struct bcma_hcd_device),
+			       GFP_KERNEL);
+	if (!usb_dev)
+		return -ENOMEM;
+	usb_dev->core = dev;
+
+	bcma_hci_platform_power_gpio(dev, true);
+
+	switch (dev->id.id) {
+	case BCMA_CORE_USB20_HOST:
+	case BCMA_CORE_NS_USB20:
+		err = bcma_hcd_usb20_init(usb_dev);
+		if (err)
+			return err;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	bcma_set_drvdata(dev, usb_dev);
+	return 0;
+}
+
 static void bcma_hcd_remove(struct bcma_device *dev)
 {
 	struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev);