1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/usb/gadget/multi_config.h b/drivers/usb/gadget/multi_config.h
new file mode 100644
index 0000000..792bbae
--- /dev/null
+++ b/drivers/usb/gadget/multi_config.h
@@ -0,0 +1,135 @@
+/*
+ * File Name : multi_config.h
+ *
+ * Virtual multi configuration utilities for composite USB gadgets.
+ * This utilitie can support variable interface for variable Host PC.
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * Author: SoonYong, Cho <soonyong.cho@samsung.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __MULTI_CONFIG_H
+#define __MULTI_CONFIG_H
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/usb/composite.h>
+
+/*
+ * Debugging macro and defines
+ */
+/*#define USB_DEBUG
+ *#define USB_MORE_DEBUG
+ */
+#define USB_DEBUG_ESS
+
+#ifdef USB_DEBUG
+#  ifdef USB_MORE_DEBUG
+#    define USB_DBG(fmt, args...) \
+	printk(KERN_INFO "usb: %s "fmt, __func__, ##args)
+#  else
+#    define USB_DBG(fmt, args...) \
+	printk(KERN_DEBUG "usb: %s "fmt, __func__, ##args)
+#  endif
+#else /* DO NOT PRINT LOG */
+#  define USB_DBG(fmt, args...) do { } while (0)
+#endif /* USB_DEBUG */
+
+#ifdef USB_DEBUG_ESS
+#  ifdef USB_MORE_DEBUG
+#    define USB_DBG_ESS(fmt, args...) \
+	printk(KERN_INFO "usb: %s "fmt, __func__, ##args)
+#  else
+#    define USB_DBG_ESS(fmt, args...) \
+	printk(KERN_DEBUG "usb: %s "fmt, __func__, ##args)
+#  endif
+#else /* DO NOT PRINT LOG */
+#  define USB_DBG_ESS(fmt, args...) do { } while (0)
+#endif /* USB_DEBUG_ESS */
+
+#define MAIN_FUNCTION "mtp"
+#define MULTI_FUNCTION_1 "mtp"
+#define MULTI_FUNCTION_2 "acm0"
+#define MULTI_EXCEPTION_FUNCTION "adb"
+
+#define MAC_REQUEST	0
+#define OTHER_REQUEST	1
+
+/* Description  : Set configuration number
+ * Parameter    : unsigned num (host request)
+ * Return value : always return 0 (It's virtual multiconfiguration)
+ */
+unsigned set_config_number(unsigned num);
+
+/* Description  : Get configuration number
+ * Return value : virtual multiconfiguration number (zero base)
+ */
+int get_config_number(void);
+
+/* Description  : Check configuration number
+ * Parameter    : unsigned num (host request)
+ * Return value : 1 (true  : virtual multi configuraiton)
+		  0 (false : normal configuration)
+ */
+int check_config(unsigned num);
+
+/* Description  : Search number of configuration including virtual configuration
+ * Parameter    : usb_configuration *c (referenced configuration)
+		  unsigned count (real number of configuration)
+ * Return value : virtual or real number of configuration
+ */
+unsigned count_multi_config(struct usb_configuration *c, unsigned count);
+
+/* Description  : Is multi configuration available ?
+ * Return value : 1 (true), 0 (false)
+ */
+int is_multi_configuration(void);
+
+/* Description  : Check function to skip for multi configuration
+ * Parameter    : char* name (function name)
+ * Return value : 0 (not available), 1 (available)
+ */
+int is_available_function(const char *name);
+
+/* Description  : Change configuration using virtual multi configuration.
+ * Parameter    : struct usb_funciton f (to be changed function interface)
+		  void *next (next means usb req->buf)
+		  int len (length for to fill buffer)
+		  struct usb_configuration *config
+		  (To reference interface array of current config)
+		  enum usb_device_speed speed (usb speed)
+ * Return value : "ret < 0" means fillbuffer function is failed.
+ */
+int change_conf(struct usb_function *f,
+		void *next, int len,
+		struct usb_configuration *config,
+		enum usb_device_speed speed);
+
+/* Description  : Set interface count
+ * Parameter    : struct usb_configuration *config
+		  (To reference interface array of current config)
+		  struct usb_config_descriptor *c
+		  (number of interfaces)
+ * Return value : void
+ */
+void set_interface_count(struct usb_configuration *config,
+	struct usb_config_descriptor *c);
+
+/* Description  : Set string mode
+ *		  This mode will be used for deciding other interface.
+ * Parameter    : u16 w_length
+ *		  - 2 means MAC request.
+ *		  - Windows and Linux PC always request 255 size.
+ */
+void set_string_mode(u16 w_length);
+#endif /* __MULTI_CONFIG_H */