include/asm-v850/v850e_uart.h

   1 /*
   2  * include/asm-v850/v850e_uart.h -- common V850E on-chip UART driver
   3  *
   4  *  Copyright (C) 2001,02,03  NEC Electronics Corporation
   5  *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
   6  *
   7  * This file is subject to the terms and conditions of the GNU General
   8  * Public License.  See the file COPYING in the main directory of this
   9  * archive for more details.
  10  *
  11  * Written by Miles Bader <miles@gnu.org>
  12  */
  13
  14 /* There's not actually a single UART implementation used by V850E CPUs,
  15    but rather a series of implementations that are all `close' to one
  16    another.  This file corresponds to the single driver which handles all
  17    of them.  */
  18
  19 #ifndef __V850_V850E_UART_H__
  20 #define __V850_V850E_UART_H__
  21
  22 #include <linux/termios.h>
  23
  24 #include <asm/v850e_utils.h>
  25 #include <asm/types.h>
  26 #include <asm/machdep.h>        /* Pick up chip-specific defs.  */
  27
  28
  29 /* Include model-specific definitions.  */
  30 #ifdef CONFIG_V850E_UART
  31 # ifdef CONFIG_V850E_UARTB
  32 #  include <asm-v850/v850e_uartb.h>
  33 # else
  34 #  include <asm-v850/v850e_uarta.h> /* original V850E UART */
  35 # endif
  36 #endif
  37
  38
  39 /* Optional capabilities some hardware provides.  */
  40
  41 /* This UART doesn't implement RTS/CTS by default, but some platforms
  42    implement them externally, so check to see if <asm/machdep.h> defined
  43    anything.  */
  44 #ifdef V850E_UART_CTS
  45 #define v850e_uart_cts(n)               V850E_UART_CTS(n)
  46 #else
  47 #define v850e_uart_cts(n)               (1)
  48 #endif
  49
  50 /* Do the same for RTS.  */
  51 #ifdef V850E_UART_SET_RTS
  52 #define v850e_uart_set_rts(n,v)         V850E_UART_SET_RTS(n,v)
  53 #else
  54 #define v850e_uart_set_rts(n,v)         ((void)0)
  55 #endif
  56
  57
  58 /* This is the serial channel to use for the boot console (if desired).  */
  59 #ifndef V850E_UART_CONSOLE_CHANNEL
  60 # define V850E_UART_CONSOLE_CHANNEL 0
  61 #endif
  62
  63
  64 #ifndef __ASSEMBLY__
  65
  66 /* Setup a console using channel 0 of the builtin uart.  */
  67 extern void v850e_uart_cons_init (unsigned chan);
  68
  69 /* Configure and turn on uart channel CHAN, using the termios `control
  70    modes' bits in CFLAGS, and a baud-rate of BAUD.  */
  71 void v850e_uart_configure (unsigned chan, unsigned cflags, unsigned baud);
  72
  73 #endif /* !__ASSEMBLY__ */
  74
  75
  76 #endif /* __V850_V850E_UART_H__ */