usb: otg: move usb_otg_state_string to usb-common.c

otg.c only had a single function definition
which might make more sense to be placed in
usb-common.c. While doing that, we also delete
otg.c since it's now empty.

Signed-off-by: Felipe Balbi <balbi@ti.com>

3 files changed, 26 insertions, 50 deletions

diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
index a844b8d35d14..6abc45388e24 100644
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -5,9 +5,6 @@
 ccflags-$(CONFIG_USB_DEBUG)             := -DDEBUG
 ccflags-$(CONFIG_USB_GADGET_DEBUG)      += -DDEBUG
 
-# infrastructure
-obj-$(CONFIG_USB_OTG_UTILS)     += otg.o
-
 # transceiver drivers
 obj-$(CONFIG_USB_GPIO_VBUS)     += gpio_vbus.o
 obj-$(CONFIG_ISP1301_OMAP)      += isp1301_omap.o
diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c
deleted file mode 100644
index fd9a4b7bebe7..000000000000
--- a/drivers/usb/otg/otg.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * otg.c -- USB OTG utility code
- *
- * Copyright (C) 2004 Texas Instruments
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-#include <linux/export.h>
-#include <linux/usb/otg.h>
-
-const char *usb_otg_state_string(enum usb_otg_state state)
-{
-        switch (state) {
-        case OTG_STATE_A_IDLE:
-                return "a_idle";
-        case OTG_STATE_A_WAIT_VRISE:
-                return "a_wait_vrise";
-        case OTG_STATE_A_WAIT_BCON:
-                return "a_wait_bcon";
-        case OTG_STATE_A_HOST:
-                return "a_host";
-        case OTG_STATE_A_SUSPEND:
-                return "a_suspend";
-        case OTG_STATE_A_PERIPHERAL:
-                return "a_peripheral";
-        case OTG_STATE_A_WAIT_VFALL:
-                return "a_wait_vfall";
-        case OTG_STATE_A_VBUS_ERR:
-                return "a_vbus_err";
-        case OTG_STATE_B_IDLE:
-                return "b_idle";
-        case OTG_STATE_B_SRP_INIT:
-                return "b_srp_init";
-        case OTG_STATE_B_PERIPHERAL:
-                return "b_peripheral";
-        case OTG_STATE_B_WAIT_ACON:
-                return "b_wait_acon";
-        case OTG_STATE_B_HOST:
-                return "b_host";
-        default:
-                return "UNDEFINED";
-        }
-}
-EXPORT_SYMBOL(usb_otg_state_string);
diff --git a/drivers/usb/usb-common.c b/drivers/usb/usb-common.c
index 070b681e5d17..0db0a919d72b 100644
--- a/drivers/usb/usb-common.c
+++ b/drivers/usb/usb-common.c
@@ -14,6 +14,32 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/usb/ch9.h>
+#include <linux/usb/otg.h>
+
+const char *usb_otg_state_string(enum usb_otg_state state)
+{
+        static const char *const names[] = {
+                [OTG_STATE_A_IDLE] = "a_idle",
+                [OTG_STATE_A_WAIT_VRISE] = "a_wait_vrise",
+                [OTG_STATE_A_WAIT_BCON] = "a_wait_bcon",
+                [OTG_STATE_A_HOST] = "a_host",
+                [OTG_STATE_A_SUSPEND] = "a_suspend",
+                [OTG_STATE_A_PERIPHERAL] = "a_peripheral",
+                [OTG_STATE_A_WAIT_VFALL] = "a_wait_vfall",
+                [OTG_STATE_A_VBUS_ERR] = "a_vbus_err",
+                [OTG_STATE_B_IDLE] = "b_idle",
+                [OTG_STATE_B_SRP_INIT] = "b_srp_init",
+                [OTG_STATE_B_PERIPHERAL] = "b_peripheral",
+                [OTG_STATE_B_WAIT_ACON] = "b_wait_acon",
+                [OTG_STATE_B_HOST] = "b_host",
+        };
+
+        if (state < 0 || state >= ARRAY_SIZE(names))
+                return "UNDEFINED";
+
+        return names[state];
+}
+EXPORT_SYMBOL_GPL(usb_otg_state_string);
 
 const char *usb_speed_string(enum usb_device_speed speed)
 {