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/**
* @file
*
*/
/*
* COPYRIGHT (c) 1998 by Radstone Technology
*
* THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
* KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
* AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
*
* You are hereby granted permission to use, copy, modify, and distribute
* this file, provided that this notice, plus the above copyright notice
* and disclaimer, appears in all copies. Radstone Technology will provide
* no support for this code.
*
* COPYRIGHT (c) 1989-2012.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _NS16550_H_
#define _NS16550_H_
#include <rtems/termiostypes.h>
#include <libchip/serial.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Driver function table
*/
extern const console_fns ns16550_fns;
extern const console_fns ns16550_fns_polled;
/*
* Flow control function tables
*/
extern const console_flow ns16550_flow_RTSCTS;
extern const console_flow ns16550_flow_DTRCTS;
/*
* Helpers for printk
*/
void ns16550_outch_polled(console_tbl *c, char out);
int ns16550_inch_polled(console_tbl *c);
/* Alternative NS16550 driver using the Termios device context */
typedef uint8_t (*ns16550_get_reg)(uintptr_t port, uint8_t reg);
typedef void (*ns16550_set_reg)(uintptr_t port, uint8_t reg, uint8_t value);
typedef struct {
rtems_termios_device_context base;
ns16550_get_reg get_reg;
ns16550_set_reg set_reg;
uintptr_t port;
rtems_vector_number irq;
uint32_t clock;
uint32_t initial_baud;
bool has_fractional_divider_register;
uint8_t modem_control;
uint8_t line_control;
uint32_t baud_divisor;
size_t out_total;
size_t out_remaining;
size_t out_current;
const char *out_buf;
rtems_termios_tty *tty;
} ns16550_context;
extern const rtems_termios_device_handler ns16550_handler_interrupt;
extern const rtems_termios_device_handler ns16550_handler_polled;
extern const rtems_termios_device_handler ns16550_handler_task;
extern const rtems_termios_device_flow ns16550_flow_rtscts;
extern const rtems_termios_device_flow ns16550_flow_dtrcts;
void ns16550_polled_putchar(rtems_termios_device_context *base, char out);
int ns16550_polled_getchar(rtems_termios_device_context *base);
bool ns16550_probe(rtems_termios_device_context *base);
#ifdef __cplusplus
}
#endif
#endif /* _NS16550_H_ */
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