From: Lukasz Majewski <l.majewski@samsung.com>
Date: Mon, 25 Aug 2014 09:07:29 +0000 (+0200)
Subject: udc: dfu: s3c_udc: Provide function to check if USB reset was asserted
X-Git-Tag: submit/tizen/20160318.071304~235
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=243fc7c96c8448bdd2c4b5717a3940533c4d2e2c;p=profile%2Fcommon%2Fplatform%2Fkernel%2Fu-boot-artik.git

udc: dfu: s3c_udc: Provide function to check if USB reset was asserted

New dfu_usb_get_reset() method is necessary to distinct two different
use cases of dfu-util program.
This method checks if the USB bus reset has been really performed after
DFU DETACH.

Without this function the previous DFU behavior is preserved.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
---

diff --git a/drivers/usb/gadget/s3c_udc_otg.c b/drivers/usb/gadget/s3c_udc_otg.c
index 10cc11450..d3429c15d 100644
--- a/drivers/usb/gadget/s3c_udc_otg.c
+++ b/drivers/usb/gadget/s3c_udc_otg.c
@@ -163,6 +163,11 @@ struct s3c_usbotg_reg *reg;
 struct s3c_usbotg_phy *phy;
 static unsigned int usb_phy_ctrl;
 
+bool dfu_usb_get_reset(void)
+{
+	return !!(readl(&reg->gintsts) & INT_RESET);
+}
+
 void otg_phy_init(struct s3c_udc *dev)
 {
 	dev->pdata->phy_control(1);