s3c24xx_uart.h

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00001 /*
00002  * Copyright (c) 2010 Jiri Svoboda
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00037 #ifndef S3C24XX_UART_H_
00038 #define S3C24XX_UART_H_
00039 
00040 #include <sys/types.h>
00041 
00043 typedef struct {
00044         uint32_t ulcon;
00045         uint32_t ucon;
00046         uint32_t ufcon;
00047         uint32_t umcon;
00048 
00049         uint32_t utrstat;
00050         uint32_t uerstat;
00051         uint32_t ufstat;
00052         uint32_t umstat;
00053 
00054         uint32_t utxh;
00055         uint32_t urxh;
00056 
00057         uint32_t ubrdiv;
00058 } s3c24xx_uart_io_t;
00059 
00060 /* Bits in UTRSTAT register */
00061 #define S3C24XX_UTRSTAT_TX_EMPTY        0x4
00062 #define S3C24XX_UTRSTAT_RDATA           0x1
00063 
00064 /* Bits in UFSTAT register */
00065 #define S3C24XX_UFSTAT_TX_FULL          0x4000
00066 #define S3C24XX_UFSTAT_RX_FULL          0x0040
00067 #define S3C24XX_UFSTAT_RX_COUNT         0x002f
00068 
00069 /* Bits in UCON register */
00070 #define UCON_RX_INT_LEVEL               0x100
00071 
00072 /* Bits in UFCON register */
00073 #define UFCON_TX_FIFO_TLEVEL_EMPTY      0x00
00074 #define UFCON_RX_FIFO_TLEVEL_1B         0x00
00075 #define UFCON_FIFO_ENABLE               0x01
00076 
00077 
00079 typedef struct {
00081         uintptr_t paddr;
00082 
00084         s3c24xx_uart_io_t *io;
00085 
00087         int client_phone;
00088 
00090         devmap_handle_t devmap_handle;
00091 } s3c24xx_uart_t;
00092 
00093 #endif
00094 

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