| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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__ */ |