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/config.h>
  23 #include <linux/termios.h>
  24
  25 #include <asm/v850e_utils.h>
  26 #include <asm/types.h>
  27 #include <asm/machdep.h>        /* Pick up chip-specific defs.  */
  28
  29
  30 /* Include model-specific definitions.  */
  31 #ifdef CONFIG_V850E_UART
  32 # ifdef CONFIG_V850E_UARTB
  33 #  include <asm-v850/v850e_uartb.h>
  34 # else
  35 #  include <asm-v850/v850e_uarta.h> /* original V850E UART */
  36 # endif
  37 #endif
  38
  39
  40 /* Optional capabilities some hardware provides.  */
  41
  42 /* This UART doesn't implement RTS/CTS by default, but some platforms
  43    implement them externally, so check to see if <asm/machdep.h> defined
  44    anything.  */
  45 #ifdef V850E_UART_CTS
  46 #define v850e_uart_cts(n)               V850E_UART_CTS(n)
  47 #else
  48 #define v850e_uart_cts(n)               (1)
  49 #endif
  50
  51 /* Do the same for RTS.  */
  52 #ifdef V850E_UART_SET_RTS
  53 #define v850e_uart_set_rts(n,v)         V850E_UART_SET_RTS(n,v)
  54 #else
  55 #define v850e_uart_set_rts(n,v)         ((void)0)
  56 #endif
  57
  58
  59 /* This is the serial channel to use for the boot console (if desired).  */
  60 #ifndef V850E_UART_CONSOLE_CHANNEL
  61 # define V850E_UART_CONSOLE_CHANNEL 0
  62 #endif
  63
  64
  65 #ifndef __ASSEMBLY__
  66
  67 /* Setup a console using channel 0 of the builtin uart.  */
  68 extern void v850e_uart_cons_init (unsigned chan);
  69
  70 /* Configure and turn on uart channel CHAN, using the termios `control
  71    modes' bits in CFLAGS, and a baud-rate of BAUD.  */
  72 void v850e_uart_configure (unsigned chan, unsigned cflags, unsigned baud);
  73
  74 #endif /* !__ASSEMBLY__ */
  75
  76
  77 #endif /* __V850_V850E_UART_H__ */