ns16550-context.c File Reference

#include <stdlib.h>
#include <rtems/bspIo.h>
#include <bsp.h>
#include <libchip/ns16550.h>
#include <libchip/ns16550_p.h>

Functions
bool	ns16550_probe (rtems_termios_device_context *base)
void	ns16550_polled_putchar (rtems_termios_device_context *base, char out)
	Polled write for NS16550.
int	ns16550_polled_getchar (rtems_termios_device_context *base)

Variables
const rtems_termios_device_flow	ns16550_flow_rtscts
const rtems_termios_device_flow	ns16550_flow_dtrcts
const rtems_termios_device_handler	ns16550_handler_interrupt
const rtems_termios_device_handler	ns16550_handler_polled
const rtems_termios_device_handler	ns16550_handler_task

Detailed Description

This file contains the TTY driver for the National Semiconductor NS16550.

This part is widely cloned and second sourced. It is found in a number of "Super IO" controllers.

This driver uses the termios pseudo driver.

Variable Documentation

ns16550_flow_dtrcts

const rtems_termios_device_flow ns16550_flow_dtrcts

Initial value:

= {
  .stop_remote_tx = ns16550_negate_DTR,
  .start_remote_tx = ns16550_assert_DTR
}

ns16550_flow_rtscts

const rtems_termios_device_flow ns16550_flow_rtscts

Initial value:

= {
  .stop_remote_tx = ns16550_negate_RTS,
  .start_remote_tx = ns16550_assert_RTS
}

ns16550_handler_interrupt

const rtems_termios_device_handler ns16550_handler_interrupt

Initial value:

= {
  .first_open = ns16550_open,
  .last_close = ns16550_close,
  .poll_read = NULL,
  .write = ns16550_write_support_int,
  .set_attributes = ns16550_set_attributes,
  .mode = TERMIOS_IRQ_DRIVEN
}

ns16550_handler_polled

const rtems_termios_device_handler ns16550_handler_polled

Initial value:

= {
  .first_open = ns16550_open,
  .last_close = ns16550_close,
  .poll_read = ns16550_polled_getchar,
  .write = ns16550_write_support_polled,
  .set_attributes = ns16550_set_attributes,
  .mode = TERMIOS_POLLED
}

ns16550_handler_task

const rtems_termios_device_handler ns16550_handler_task

Initial value:

= {
  .first_open = ns16550_open,
  .last_close = ns16550_close,
  .poll_read = ns16550_read_task,
  .write = ns16550_write_support_task,
  .set_attributes = ns16550_set_attributes,
  .mode = TERMIOS_TASK_DRIVEN
}