usb: host: xhci: Adapt xhci to use usb drd library

Adapt the xhci-plat driver  to use drd library functions.
In prepration to support DRD on dwc3.

Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 54464c0e052643e93a2ec9a5aa7db3652540a73b..f0fafe35b4f57954b5af7955ec8be3d886fb7598 100644 (file)
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -17,6 +17,8 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/drd.h>
 #include <linux/usb/xhci_pdriver.h>
 
 #include "xhci.h"
@@ -129,6 +131,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
        struct resource         *res;
        struct usb_hcd          *hcd;
        struct clk              *clk;
+       struct usb_drd_host     *drd_host;
        int                     ret;
        int                     irq;
 
@@ -220,6 +223,17 @@ static int xhci_plat_probe(struct platform_device *pdev)
        if (ret)
                goto put_usb3_hcd;
 
+       drd_host = kzalloc(sizeof(*drd_host), GFP_KERNEL);
+       if (!drd_host)
+               return -ENOMEM;
+
+       drd_host->main_hcd = xhci->main_hcd;
+       drd_host->shared_hcd = xhci->shared_hcd;
+       drd_host->hcd_irq = irq;
+       drd_host->host_setup = NULL;
+
+       usb_drd_register_hcd(pdev->dev.parent, drd_host);
+
        return 0;
 
 put_usb3_hcd:
@@ -251,6 +265,7 @@ static int xhci_plat_remove(struct platform_device *dev)
        if (!IS_ERR(clk))
                clk_disable_unprepare(clk);
        usb_put_hcd(hcd);
+       usb_drd_unregister_hcd(dev->dev.parent);
        kfree(xhci);
 
        return 0;