USB: s3c: Enable soft disconnect during initialization

Enable soft disconnect bit the OTG core during initialization. Without this,
the host sees that a gadget is connected and tries to enumerate. The
soft disconnect should be enabled until the USB gadget driver is
registered with this otg driver.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 1f73b485732d..a6d725dd7335 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -2730,6 +2730,9 @@ static void s3c_hsotg_init(struct s3c_hsotg *hsotg)
 
         writel(0, hsotg->regs + S3C_DAINTMSK);
 
+        /* Be in disconnected state until gadget is registered */
+        __orr32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon);
+
         if (0) {
                 /* post global nak until we're ready */
                 writel(S3C_DCTL_SGNPInNAK | S3C_DCTL_SGOUTNak,