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authorTom Rini <trini@konsulko.com>2016-05-17 13:58:27 -0400
committerTom Rini <trini@konsulko.com>2016-05-17 13:58:27 -0400
commit4b6e1fda107e5244e80ebc41865650ac2873dc88 (patch)
treef448089740af77c2987d12e2dd5b753b7659586f /drivers/usb/common/common.c
parent27bec5c12757c80f598b704477c1bc6c250bcb4c (diff)
parent341392dd115f1385c31bb0b034ec15f542730e30 (diff)
downloadtalos-obmc-uboot-4b6e1fda107e5244e80ebc41865650ac2873dc88.tar.gz
talos-obmc-uboot-4b6e1fda107e5244e80ebc41865650ac2873dc88.zip
Merge git://git.denx.de/u-boot-dm
Diffstat (limited to 'drivers/usb/common/common.c')
-rw-r--r--drivers/usb/common/common.c40
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;
+}
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