Merge branch 'master' of git://git.denx.de/u-boot

1 files changed, 40 insertions, 0 deletions

diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
new file mode 100644
index 0000000000..35c2dc18d9
--- /dev/null
+++ b/drivers/usb/common/common.c
@@ -0,0 +1,40 @@
+/*
+ * Provides code common for host and device side USB.
+ *
+ * (C) Copyright 2016
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <libfdt.h>
+#include <linux/usb/otg.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const char *const usb_dr_modes[] = {
+	[USB_DR_MODE_UNKNOWN]		= "",
+	[USB_DR_MODE_HOST]		= "host",
+	[USB_DR_MODE_PERIPHERAL]	= "peripheral",
+	[USB_DR_MODE_OTG]		= "otg",
+};
+
+enum usb_dr_mode usb_get_dr_mode(int node)
+{
+	const void *fdt = gd->fdt_blob;
+	const char *dr_mode;
+	int i;
+
+	dr_mode = fdt_getprop(fdt, node, "dr_mode", NULL);
+	if (!dr_mode) {
+		error("usb dr_mode not found\n");
+		return USB_DR_MODE_UNKNOWN;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++)
+		if (!strcmp(dr_mode, usb_dr_modes[i]))
+			return i;
+
+	return USB_DR_MODE_UNKNOWN;
+}