text: /* arch/arm/mach-s3c2410/include/mach/regs-serial.h
   *
   *  From linux/include/asm-arm/hardware/serial_s3c2410.h
   *
   *  Internal header file for Samsung S3C2410 serial ports (UART0-2)
   *
   *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   *
   *  Additional defines, (c) 2003 Simtec Electronics (linux@simtec.co.uk)
   *
   *  Adapted from:
   *
   *  Internal header file for MX1ADS serial ports (UART1 & 2)
   *
   *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   *
   * 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.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
  
  #ifndef __ASM_ARM_REGS_SERIAL_H
  #define __ASM_ARM_REGS_SERIAL_H
  
  #define S3C24XX_VA_UART0      (S3C_VA_UART)
  #define S3C24XX_VA_UART1      (S3C_VA_UART + 0x4000 )
  #define S3C24XX_VA_UART2      (S3C_VA_UART + 0x8000 )
  #define S3C24XX_VA_UART3      (S3C_VA_UART + 0xC000 )
  
  #define S3C2410_PA_UART0      (S3C24XX_PA_UART)
  #define S3C2410_PA_UART1      (S3C24XX_PA_UART + 0x4000 )
  #define S3C2410_PA_UART2      (S3C24XX_PA_UART + 0x8000 )
  #define S3C2443_PA_UART3      (S3C24XX_PA_UART + 0xC000 )
  
  #define S3C2410_URXH	  (0x24)
  #define S3C2410_UTXH	  (0x20)
  #define S3C2410_ULCON	  (0x00)
  #define S3C2410_UCON	  (0x04)
  #define S3C2410_UFCON	  (0x08)
  #define S3C2410_UMCON	  (0x0C)
  #define S3C2410_UBRDIV	  (0x28)
  #define S3C2410_UTRSTAT	  (0x10)
  #define S3C2410_UERSTAT	  (0x14)
  #define S3C2410_UFSTAT	  (0x18)
  #define S3C2410_UMSTAT	  (0x1C)
  
  #define S3C2410_LCON_CFGMASK	  ((0xF<<3)|(0x3))
  
  #define S3C2410_LCON_CS5	  (0x0)
  #define S3C2410_LCON_CS6	  (0x1)
  #define S3C2410_LCON_CS7	  (0x2)
  #define S3C2410_LCON_CS8	  (0x3)
  #define S3C2410_LCON_CSMASK	  (0x3)
  
  #define S3C2410_LCON_PNONE	  (0x0)
  #define S3C2410_LCON_PEVEN	  (0x5 << 3)
  #define S3C2410_LCON_PODD	  (0x4 << 3)
  #define S3C2410_LCON_PMASK	  (0x7 << 3)
  
  #define S3C2410_LCON_STOPB	  (1<<2)
  #define S3C2410_LCON_IRM          (1<<6)
  
  #define S3C2440_UCON_CLKMASK	  (3<<10)
  #define S3C2440_UCON_PCLK	  (0<<10)
  #define S3C2440_UCON_UCLK	  (1<<10)
  #define S3C2440_UCON_PCLK2	  (2<<10)
  #define S3C2440_UCON_FCLK	  (3<<10)
  #define S3C2443_UCON_EPLL	  (3<<10)
  
  #define S3C6400_UCON_CLKMASK	(3<<10)
  #define S3C6400_UCON_PCLK	(0<<10)
  #define S3C6400_UCON_PCLK2	(2<<10)
  #define S3C6400_UCON_UCLK0	(1<<10)
  #define S3C6400_UCON_UCLK1	(3<<10)
  
  #define S3C2440_UCON2_FCLK_EN	  (1<<15)
  #define S3C2440_UCON0_DIVMASK	  (15 << 12)
  #define S3C2440_UCON1_DIVMASK	  (15 << 12)
  #define S3C2440_UCON2_DIVMASK	  (7 << 12)
  #define S3C2440_UCON_DIVSHIFT	  (12)
  
  #define S3C2412_UCON_CLKMASK	(3<<10)
  #define S3C2412_UCON_UCLK	(1<<10)
  #define S3C2412_UCON_USYSCLK	(3<<10)
  #define S3C2412_UCON_PCLK	(0<<10)
  #define S3C2412_UCON_PCLK2	(2<<10)
  
  #define S3C2410_UCON_UCLK	  (1<<10)
  #define S3C2410_UCON_SBREAK	  (1<<4)
  
  #define S3C2410_UCON_TXILEVEL	  (1<<9)
  #define S3C2410_UCON_RXILEVEL	  (1<<8)
  #define S3C2410_UCON_TXIRQMODE	  (1<<2)
  #define S3C2410_UCON_RXIRQMODE	  (1<<0)
  #define S3C2410_UCON_RXFIFO_TOI	  (1<<7)
  #define S3C2443_UCON_RXERR_IRQEN  (1<<6)
  #define S3C2443_UCON_LOOPBACK	  (1<<5)
  
  #define S3C2410_UCON_DEFAULT	  (S3C2410_UCON_TXILEVEL  | \
  				   S3C2410_UCON_RXILEVEL  | \
  				   S3C2410_UCON_TXIRQMODE | \
  				   S3C2410_UCON_RXIRQMODE | \
  				   S3C2410_UCON_RXFIFO_TOI)
  
  #define S3C2410_UFCON_FIFOMODE	  (1<<0)
  #define S3C2410_UFCON_TXTRIG0	  (0<<6)
  #define S3C2410_UFCON_RXTRIG8	  (1<<4)
  #define S3C2410_UFCON_RXTRIG12	  (2<<4)
  
  /* S3C2440 FIFO trigger levels */
  #define S3C2440_UFCON_RXTRIG1	  (0<<4)
  #define S3C2440_UFCON_RXTRIG8	  (1<<4)
  #define S3C2440_UFCON_RXTRIG16	  (2<<4)
  #define S3C2440_UFCON_RXTRIG32	  (3<<4)
  
  #define S3C2440_UFCON_TXTRIG0	  (0<<6)
  #define S3C2440_UFCON_TXTRIG16	  (1<<6)
  #define S3C2440_UFCON_TXTRIG32	  (2<<6)
  #define S3C2440_UFCON_TXTRIG48	  (3<<6)
  
  #define S3C2410_UFCON_RESETBOTH	  (3<<1)
  #define S3C2410_UFCON_RESETTX	  (1<<2)
  #define S3C2410_UFCON_RESETRX	  (1<<1)
  
  #define S3C2410_UFCON_DEFAULT	  (S3C2410_UFCON_FIFOMODE | \
  				   S3C2410_UFCON_TXTRIG0  | \
  				   S3C2410_UFCON_RXTRIG8 )
  
  #define	S3C2410_UMCOM_AFC	  (1<<4)
  #define	S3C2410_UMCOM_RTS_LOW	  (1<<0)
  
  #define S3C2412_UMCON_AFC_63	(0<<5)		/* same as s3c2443 */
  #define S3C2412_UMCON_AFC_56	(1<<5)
  #define S3C2412_UMCON_AFC_48	(2<<5)
  #define S3C2412_UMCON_AFC_40	(3<<5)
  #define S3C2412_UMCON_AFC_32	(4<<5)
  #define S3C2412_UMCON_AFC_24	(5<<5)
  #define S3C2412_UMCON_AFC_16	(6<<5)
  #define S3C2412_UMCON_AFC_8	(7<<5)
  
  #define S3C2410_UFSTAT_TXFULL	  (1<<9)
  #define S3C2410_UFSTAT_RXFULL	  (1<<8)
  #define S3C2410_UFSTAT_TXMASK	  (15<<4)
  #define S3C2410_UFSTAT_TXSHIFT	  (4)
  #define S3C2410_UFSTAT_RXMASK	  (15<<0)
  #define S3C2410_UFSTAT_RXSHIFT	  (0)
  
  /* UFSTAT S3C24A0 */
  #define S3C24A0_UFSTAT_TXFULL	  (1 << 14)
  #define S3C24A0_UFSTAT_RXFULL	  (1 << 6)
  #define S3C24A0_UFSTAT_TXMASK	  (63 << 8)
  #define S3C24A0_UFSTAT_TXSHIFT	  (8)
  #define S3C24A0_UFSTAT_RXMASK	  (63)
  #define S3C24A0_UFSTAT_RXSHIFT	  (0)
  
  /* UFSTAT S3C2443 same as S3C2440 */
  #define S3C2440_UFSTAT_TXFULL	  (1<<14)
  #define S3C2440_UFSTAT_RXFULL	  (1<<6)
  #define S3C2440_UFSTAT_TXSHIFT	  (8)
  #define S3C2440_UFSTAT_RXSHIFT	  (0)
  #define S3C2440_UFSTAT_TXMASK	  (63<<8)
  #define S3C2440_UFSTAT_RXMASK	  (63)
  
  #define S3C2410_UTRSTAT_TXE	  (1<<2)
  #define S3C2410_UTRSTAT_TXFE	  (1<<1)
  #define S3C2410_UTRSTAT_RXDR	  (1<<0)
  
  #define S3C2410_UERSTAT_OVERRUN	  (1<<0)
  #define S3C2410_UERSTAT_FRAME	  (1<<2)
  #define S3C2410_UERSTAT_BREAK	  (1<<3)
  #define S3C2443_UERSTAT_PARITY	  (1<<1)
  
  #define S3C2410_UERSTAT_ANY	  (S3C2410_UERSTAT_OVERRUN | \
  				   S3C2410_UERSTAT_FRAME | \
  				   S3C2410_UERSTAT_BREAK)
  
  #define S3C2410_UMSTAT_CTS	  (1<<0)
  #define S3C2410_UMSTAT_DeltaCTS	  (1<<2)
  
  #define S3C2443_DIVSLOT		  (0x2C)
  
  /* S3C64XX interrupt registers. */
  #define S3C64XX_UINTP		0x30
  #define S3C64XX_UINTSP		0x34
  #define S3C64XX_UINTM		0x38
  
  #ifndef __ASSEMBLY__
  
  /* struct s3c24xx_uart_clksrc
   *
   * this structure defines a named clock source that can be used for the
   * uart, so that the best clock can be selected for the requested baud
   * rate.
   *
   * min_baud and max_baud define the range of baud-rates this clock is
   * acceptable for, if they are both zero, it is assumed any baud rate that
   * can be generated from this clock will be used.
   *
   * divisor gives the divisor from the clock to the one seen by the uart
  */
  
  struct s3c24xx_uart_clksrc {
  	const char	*name;
  	unsigned int	 divisor;
  	unsigned int	 min_baud;
  	unsigned int	 max_baud;
  };
  
  /* configuration structure for per-machine configurations for the
   * serial port
   *
   * the pointer is setup by the machine specific initialisation from the
   * arch/arm/mach-s3c2410/ directory.
  */
  
  struct s3c2410_uartcfg {
  	unsigned char	   hwport;	 /* hardware port number */
  	unsigned char	   unused;
  	unsigned short	   flags;
  	upf_t		   uart_flags;	 /* default uart flags */
  
  	unsigned long	   ucon;	 /* value of ucon for port */
  	unsigned long	   ulcon;	 /* value of ulcon for port */
  	unsigned long	   ufcon;	 /* value of ufcon for port */
  
  	struct s3c24xx_uart_clksrc *clocks;
  	unsigned int		    clocks_size;
  };
  
  /* s3c24xx_uart_devs
   *
   * this is exported from the core as we cannot use driver_register(),
   * or platform_add_device() before the console_initcall()
  */
  
  extern struct platform_device *s3c24xx_uart_devs[4];
  
  #endif /* __ASSEMBLY__ */
  
  #endif /* __ASM_ARM_REGS_SERIAL_H */
  
  