/*
 * Copyright (C) 2017 Amlogic, Inc. All rights reserved.
 *
 * 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.
 *
 * 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 __MESON_FIRM_UART_H_
#define __MESON_FIRM_UART_H_
#include <config.h>
#include <common.h>
#include "register.h"
//#include "io.h"
#include <asm/arch/secure_apb.h>

#ifndef CONFIG_CONS_INDEX
#error Please define CONFIG_CONS_INDEX==[0|1]
#endif

#if CONFIG_CONS_INDEX==0
#define UART_PORT_CONS UART_PORT_0
#elif CONFIG_CONS_INDEX==1
#define UART_PORT_CONS UART_PORT_1
#elif CONFIG_CONS_INDEX==2
#define UART_PORT_CONS UART_PORT_AO
#define USE_AO_UART   1
#else
#error Please define CONFIG_CONS_INDEX==[0|1]
#endif
/*
#define UART_PORT_0     CBUS_REG_ADDR(UART0_WFIFO)
#define UART_PORT_1     CBUS_REG_ADDR(UART1_WFIFO)
#define UART_PORT_2     CBUS_REG_ADDR(UART2_WFIFO)
#define UART_PORT_AO    P_AO_UART_WFIFO

#define UART_WFIFO      (0<<2)
#define UART_RFIFO      (1<<2)
#define UART_CONTROL    (2<<2)
#define UART_STATUS     (3<<2)
#define UART_MISC       (4<<2)
*/

#include "clock.h"

#define UART_CLK_SRC    CLK81
#define UART_PORT_0     UART0_WFIFO
#define UART_PORT_1     UART1_WFIFO
#define UART_PORT_AO    AO_UART_WFIFO
#define UART_WFIFO      0
#define UART_RFIFO      1
#define UART_CONTROL    2
#define UART_STATUS     3
#define UART_MISC       4

#if USE_AO_UART == 1
#define P_UART(uart_base,reg)    	  (uart_base + (reg<<2))
#else
#define P_UART(uart_base,reg)    	CBUS_REG_ADDR(uart_base+reg)
#endif
#define P_UART_WFIFO(uart_base)   	P_UART(uart_base,UART_WFIFO)
#define P_UART_RFIFO(uart_base)   	P_UART(uart_base,UART_RFIFO)

#define P_UART_CONTROL(uart_base)    P_UART(uart_base,UART_CONTROL)
    #define UART_CNTL_MASK_BAUD_RATE                (0xfff)
    #define UART_CNTL_MASK_TX_EN                    (1<<12)
    #define UART_CNTL_MASK_RX_EN                    (1<<13)
    #define UART_CNTL_MASK_2WIRE                    (1<<15)
    #define UART_CNTL_MASK_STP_BITS                 (3<<16)
    #define UART_CNTL_MASK_STP_1BIT                 (0<<16)
    #define UART_CNTL_MASK_STP_2BIT                 (1<<16)
    #define UART_CNTL_MASK_PRTY_EVEN                (0<<18)
    #define UART_CNTL_MASK_PRTY_ODD                 (1<<18)
    #define UART_CNTL_MASK_PRTY_TYPE                (1<<18)
    #define UART_CNTL_MASK_PRTY_EN                  (1<<19)
    #define UART_CNTL_MASK_CHAR_LEN                 (3<<20)
    #define UART_CNTL_MASK_CHAR_8BIT                (0<<20)
    #define UART_CNTL_MASK_CHAR_7BIT                (1<<20)
    #define UART_CNTL_MASK_CHAR_6BIT                (2<<20)
    #define UART_CNTL_MASK_CHAR_5BIT                (3<<20)
    #define UART_CNTL_MASK_RST_TX                   (1<<22)
    #define UART_CNTL_MASK_RST_RX                   (1<<23)
    #define UART_CNTL_MASK_CLR_ERR                  (1<<24)
    #define UART_CNTL_MASK_INV_RX                   (1<<25)
    #define UART_CNTL_MASK_INV_TX                   (1<<26)
    #define UART_CNTL_MASK_RINT_EN                  (1<<27)
    #define UART_CNTL_MASK_TINT_EN                  (1<<28)
    #define UART_CNTL_MASK_INV_CTS                  (1<<29)
    #define UART_CNTL_MASK_MASK_ERR                 (1<<30)
    #define UART_CNTL_MASK_INV_RTS                  (1<<31)
#define P_UART_STATUS(uart_base)  P_UART(uart_base,UART_STATUS )
    #define UART_STAT_MASK_RFIFO_CNT                (0x7f<<0)
    #define UART_STAT_MASK_TFIFO_CNT                (0x7f<<8)
    #define UART_STAT_MASK_PRTY_ERR                 (1<<16)
    #define UART_STAT_MASK_FRAM_ERR                 (1<<17)
    #define UART_STAT_MASK_WFULL_ERR                (1<<18)
    #define UART_STAT_MASK_RFIFO_FULL               (1<<19)
    #define UART_STAT_MASK_RFIFO_EMPTY              (1<<20)
    #define UART_STAT_MASK_TFIFO_FULL               (1<<21)
    #define UART_STAT_MASK_TFIFO_EMPTY              (1<<22)
    #define UART_STAT_MASK_XMIT_BUSY					(1<<25)
    #define UART_STAT_MASK_RECV_BUSY					(1<<26)
#define P_UART_MISC(uart_base)    P_UART(uart_base,UART_MISC   )


#ifndef CONFIG_SERIAL_STP_BITS
#define CONFIG_SERIAL_STP_BITS 1 // 1 , 2
#endif
#if CONFIG_SERIAL_STP_BITS==1
#define UART_STP_BIT UART_CNTL_MASK_STP_1BIT
#elif CONFIG_SERIAL_STP_BITS==2
#define UART_STP_BIT UART_CNTL_MASK_STP_2BIT
#else
#error CONFIG_SERIAL_STP_BITS wrong
#endif


#ifndef CONFIG_SERIAL_PRTY_TYPE
#define CONFIG_SERIAL_PRTY_TYPE 0 //0 ,2 ,3
#endif
#if CONFIG_SERIAL_PRTY_TYPE==0
#define UART_PRTY_BIT 0
#elif CONFIG_SERIAL_PRTY_TYPE==2
#define UART_PRTY_BIT    (UART_CNTL_MASK_PRTY_EN|UART_CNTL_MASK_PRTY_EVEN)
#elif CONFIG_SERIAL_PRTY_TYPE==3
#define UART_PRTY_BIT    (UART_CNTL_MASK_PRTY_EN|UART_CNTL_MASK_PRTY_ODD)
#else
#error CONFIG_SERIAL_PRTY_TYPE wrong
#endif

#ifndef CONFIG_SERIAL_CHAR_LEN
#define CONFIG_SERIAL_CHAR_LEN 8 //5,6,7,8
#endif
#if CONFIG_SERIAL_CHAR_LEN==5
#define UART_CHAR_LEN   UART_CNTL_MASK_CHAR_5BIT
#elif CONFIG_SERIAL_CHAR_LEN==6
#define UART_CHAR_LEN   UART_CNTL_MASK_CHAR_6BIT
#elif CONFIG_SERIAL_CHAR_LEN==7
#define UART_CHAR_LEN   UART_CNTL_MASK_CHAR_7BIT
#elif CONFIG_SERIAL_CHAR_LEN==8
#define UART_CHAR_LEN   UART_CNTL_MASK_CHAR_8BIT
#else
#error CONFIG_SERIAL_CHAR_LEN wrong
#endif
#define UART_CONTROL_SET(baud,clk81)                        \
                        (((clk81)/(baud*4) -1)              \
                        | UART_STP_BIT                      \
                        | UART_PRTY_BIT                     \
                        | UART_CHAR_LEN                     \
                        | UART_CNTL_MASK_TX_EN              \
                        | UART_CNTL_MASK_RX_EN              \
                        | UART_CNTL_MASK_RST_TX             \
                        | UART_CNTL_MASK_RST_RX             \
                        | UART_CNTL_MASK_CLR_ERR    )
#endif