USB: bcma: initialize Northstar USB 3.0 controller

It's a rather simple controller, we just need to make sure USB is
powered (using GPIO pin) and reset bus core. Once this is done it's
safe to register XHCI controller and let it init PHY and do its magic.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
index 172ef17911aad33fd5bc34a2d68e75d64ee830bf..422fdc295b8dd5b48a4c6cf2d2c92bb6c90bd4e4 100644 (file)
--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
+#include <linux/of_platform.h>
 #include <linux/usb/ehci_pdriver.h>
 #include <linux/usb/ohci_pdriver.h>
 
@@ -338,6 +339,18 @@ err_unregister_ohci_dev:
        return err;
 }
 
+static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd)
+{
+       struct bcma_device *core = bcma_hcd->core;
+       struct device *dev = &core->dev;
+
+       bcma_core_enable(core, 0);
+
+       of_platform_default_populate(dev->of_node, NULL, dev);
+
+       return 0;
+}
+
 static int bcma_hcd_probe(struct bcma_device *core)
 {
        int err;
@@ -362,6 +375,11 @@ static int bcma_hcd_probe(struct bcma_device *core)
                if (err)
                        return err;
                break;
+       case BCMA_CORE_NS_USB30:
+               err = bcma_hcd_usb30_init(usb_dev);
+               if (err)
+                       return err;
+               break;
        default:
                return -ENODEV;
        }
@@ -416,6 +434,7 @@ static int bcma_hcd_resume(struct bcma_device *dev)
 static const struct bcma_device_id bcma_hcd_table[] = {
        BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
        BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS),
+       BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB30, BCMA_ANY_REV, BCMA_ANY_CLASS),
        {},
 };
 MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);