trats: usb: Add usb_cable_connected() function

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

board/samsung/trats/trats.c

@@ -501,6 +501,17 @@ int board_usb_init(int index, enum usb_init_type init)
 	debug("USB_udc_probe\n");
 	return s3c_udc_probe(&s5pc210_otg_data);
 }
+
+#ifdef CONFIG_USB_CABLE_CHECK
+int usb_cable_connected(void)
+{
+	struct pmic *muic = pmic_get("MAX8997_MUIC");
+	if (!muic)
+		return 0;
+
+	return !!muic->chrg->chrg_type(muic);
+}
+#endif
 #endif
 
 static void pmic_reset(void)

include/configs/trats.h

@@ -308,6 +308,7 @@
 #define CONFIG_USB_GADGET_S3C_UDC_OTG
 #define CONFIG_USB_GADGET_DUALSPEED
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
+#define CONFIG_USB_CABLE_CHECK
 
 /* LCD */
 #define CONFIG_EXYNOS_FB