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    Subject[PATCH V2 4/8] usb: dwc3: drd: Register the eud connector child node for dwc3
    Date
    Register the child node for dwc3 which is the "eud_usb_connector".
    The eud driver will be able to switch the usb role from device to
    host and vice versa using the role switch property of dwc3 node.

    Signed-off-by: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
    ---
    drivers/usb/dwc3/drd.c | 26 ++++++++++++++++++++++++++
    1 file changed, 26 insertions(+)

    diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c
    index d7f7683..b4ea55c 100644
    --- a/drivers/usb/dwc3/drd.c
    +++ b/drivers/usb/dwc3/drd.c
    @@ -8,6 +8,7 @@
    */

    #include <linux/extcon.h>
    +#include <linux/of_platform.h>
    #include <linux/of_graph.h>
    #include <linux/platform_device.h>
    #include <linux/property.h>
    @@ -164,6 +165,27 @@ static int dwc3_otg_get_irq(struct dwc3 *dwc)
    return irq;
    }

    +static int dwc3_register_eud(struct dwc3 *dwc)
    +{
    + struct device *dev = dwc->dev;
    + struct device_node *np = dev->of_node;
    + int ret;
    +
    + of_get_child_by_name(np, "eud_usb_connector");
    + if (!np) {
    + dev_dbg(dev, "no usb_connector child node specified\n");
    + return 0;
    + }
    +
    + ret = of_platform_populate(np, NULL, NULL, dev);
    + if (ret) {
    + dev_err(dev, "failed to register usb_connector - %d\n", ret);
    + return ret;
    + }
    +
    + return 0;
    +}
    +
    void dwc3_otg_init(struct dwc3 *dwc)
    {
    u32 reg;
    @@ -580,6 +602,10 @@ int dwc3_drd_init(struct dwc3 *dwc)
    ret = dwc3_setup_role_switch(dwc);
    if (ret < 0)
    return ret;
    +
    + ret = dwc3_register_eud(dwc);
    + if (ret < 0)
    + return ret;
    } else if (dwc->edev) {
    dwc->edev_nb.notifier_call = dwc3_drd_notifier;
    ret = extcon_register_notifier(dwc->edev, EXTCON_USB_HOST,
    --
    2.7.4
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