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Diffstat (limited to 'drivers/usb/gadget/u_os_desc.h')
-rw-r--r--drivers/usb/gadget/u_os_desc.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/drivers/usb/gadget/u_os_desc.h b/drivers/usb/gadget/u_os_desc.h
new file mode 100644
index 000000000000..ea5cf8c2da28
--- /dev/null
+++ b/drivers/usb/gadget/u_os_desc.h
@@ -0,0 +1,90 @@
+/*
+ * 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 void usb_ext_prop_put_size(u8 *buf, int dw_size)
+{
+ put_unaligned_le32(dw_size, &buf[USB_EXT_PROP_DW_SIZE]);
+}
+
+static inline void usb_ext_prop_put_type(u8 *buf, int type)
+{
+ put_unaligned_le32(type, &buf[USB_EXT_PROP_DW_PROPERTY_DATA_TYPE]);
+}
+
+static inline int usb_ext_prop_put_name(u8 *buf, const char *name, int pnl)
+{
+ int result;
+
+ put_unaligned_le16(pnl, &buf[USB_EXT_PROP_W_PROPERTY_NAME_LENGTH]);
+ result = utf8s_to_utf16s(name, strlen(name), UTF16_LITTLE_ENDIAN,
+ (wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_NAME], pnl - 2);
+ if (result < 0)
+ return result;
+
+ put_unaligned_le16(0, &buf[USB_EXT_PROP_B_PROPERTY_NAME + pnl]);
+
+ 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,
+ &buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]);
+ memcpy(&buf[USB_EXT_PROP_B_PROPERTY_DATA + 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,
+ &buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]);
+
+ result = utf8s_to_utf16s(string, data_len >> 1, UTF16_LITTLE_ENDIAN,
+ (wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl],
+ data_len - 2);
+ if (result < 0)
+ return result;
+
+ put_unaligned_le16(0,
+ &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl + data_len]);
+
+ return data_len;
+}
+
+#endif /* __U_OS_DESC_H__ */