Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / gadget / u_os_desc.h

diff --git a/kernel/drivers/usb/gadget/u_os_desc.h b/kernel/drivers/usb/gadget/u_os_desc.h
new file mode 100644 (file)
index 0000000..947b7dd
--- /dev/null
+++ b/kernel/drivers/usb/gadget/u_os_desc.h
@@ -0,0 +1,123 @@
+/*
+ * u_os_desc.h
+ *
+ * Utility definitions for "OS Descriptors" support
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ *             http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __U_OS_DESC_H__
+#define __U_OS_DESC_H__
+
+#include <asm/unaligned.h>
+#include <linux/nls.h>
+
+#define USB_EXT_PROP_DW_SIZE                   0
+#define USB_EXT_PROP_DW_PROPERTY_DATA_TYPE     4
+#define USB_EXT_PROP_W_PROPERTY_NAME_LENGTH    8
+#define USB_EXT_PROP_B_PROPERTY_NAME           10
+#define USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH   10
+#define USB_EXT_PROP_B_PROPERTY_DATA           14
+
+#define USB_EXT_PROP_RESERVED                  0
+#define USB_EXT_PROP_UNICODE                   1
+#define USB_EXT_PROP_UNICODE_ENV               2
+#define USB_EXT_PROP_BINARY                    3
+#define USB_EXT_PROP_LE32                      4
+#define USB_EXT_PROP_BE32                      5
+#define USB_EXT_PROP_UNICODE_LINK              6
+#define USB_EXT_PROP_UNICODE_MULTI             7
+
+static inline u8 *__usb_ext_prop_ptr(u8 *buf, size_t offset)
+{
+       return buf + offset;
+}
+
+static inline u8 *usb_ext_prop_size_ptr(u8 *buf)
+{
+       return __usb_ext_prop_ptr(buf, USB_EXT_PROP_DW_SIZE);
+}
+
+static inline u8 *usb_ext_prop_type_ptr(u8 *buf)
+{
+       return __usb_ext_prop_ptr(buf, USB_EXT_PROP_DW_PROPERTY_DATA_TYPE);
+}
+
+static inline u8 *usb_ext_prop_name_len_ptr(u8 *buf)
+{
+       return __usb_ext_prop_ptr(buf, USB_EXT_PROP_W_PROPERTY_NAME_LENGTH);
+}
+
+static inline u8 *usb_ext_prop_name_ptr(u8 *buf)
+{
+       return __usb_ext_prop_ptr(buf, USB_EXT_PROP_B_PROPERTY_NAME);
+}
+
+static inline u8 *usb_ext_prop_data_len_ptr(u8 *buf, size_t off)
+{
+       return __usb_ext_prop_ptr(buf,
+                                 USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + off);
+}
+
+static inline u8 *usb_ext_prop_data_ptr(u8 *buf, size_t off)
+{
+       return __usb_ext_prop_ptr(buf, USB_EXT_PROP_B_PROPERTY_DATA + off);
+}
+
+static inline void usb_ext_prop_put_size(u8 *buf, int dw_size)
+{
+       put_unaligned_le32(dw_size, usb_ext_prop_size_ptr(buf));
+}
+
+static inline void usb_ext_prop_put_type(u8 *buf, int type)
+{
+       put_unaligned_le32(type, usb_ext_prop_type_ptr(buf));
+}
+
+static inline int usb_ext_prop_put_name(u8 *buf, const char *name, int pnl)
+{
+       int result;
+
+       put_unaligned_le16(pnl, usb_ext_prop_name_len_ptr(buf));
+       result = utf8s_to_utf16s(name, strlen(name), UTF16_LITTLE_ENDIAN,
+               (wchar_t *) usb_ext_prop_name_ptr(buf), pnl - 2);
+       if (result < 0)
+               return result;
+
+       put_unaligned_le16(0, &buf[USB_EXT_PROP_B_PROPERTY_NAME + pnl - 2]);
+
+       return pnl;
+}
+
+static inline void usb_ext_prop_put_binary(u8 *buf, int pnl, const u8 *data,
+                                          int data_len)
+{
+       put_unaligned_le32(data_len, usb_ext_prop_data_len_ptr(buf, pnl));
+       memcpy(usb_ext_prop_data_ptr(buf, pnl), data, data_len);
+}
+
+static inline int usb_ext_prop_put_unicode(u8 *buf, int pnl, const char *string,
+                                          int data_len)
+{
+       int result;
+       put_unaligned_le32(data_len, usb_ext_prop_data_len_ptr(buf, pnl));
+       result = utf8s_to_utf16s(string, data_len >> 1, UTF16_LITTLE_ENDIAN,
+                       (wchar_t *) usb_ext_prop_data_ptr(buf, pnl),
+                       data_len - 2);
+       if (result < 0)
+               return result;
+
+       put_unaligned_le16(0,
+               &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl + data_len - 2]);
+
+       return data_len;
+}
+
+#endif /* __U_OS_DESC_H__ */