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/**
* @file
*
* @ingroup raspberrypi_console
*
* @brief framebuffer graphic console support.
*/
/*
* Copyright (c) 2015 Yang Qiao
*
* 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
*
*/
#include <rtems.h>
#include <rtems/libio.h>
#include <rtems/termiostypes.h>
#include <stdlib.h>
#include <libchip/serial.h>
#include <libchip/sersupp.h>
#include <bsp.h>
#include <bsp/fbcons.h>
#include <bsp/vc.h>
#include <bsp/rpi-fb.h>
/*
* fbcons_open
*
* This function opens a port for communication.
*
* Default state is 9600 baud, 8 bits, No parity, and 1 stop bit.
*/
static bool fbcons_open(
struct rtems_termios_tty *tty,
rtems_termios_device_context *base,
struct termios *term,
rtems_libio_open_close_args_t *args
)
{
return true;
}
/*
* fbcons_close
*
* This function shuts down the requested port.
*/
static void fbcons_close(
struct rtems_termios_tty *tty,
rtems_termios_device_context *base,
rtems_libio_open_close_args_t *args
)
{
}
/*
* fbcons_write_polled
*
* This routine polls out the requested character.
*/
void fbcons_write_polled(
rtems_termios_device_context *base,
char c
)
{
rpi_fb_outch( c );
if ( c == '\n' )
rpi_fb_outch( '\r' ); /* LF = LF + CR */
}
/*
* fbcons_write_support_polled
*
* Console Termios output entry point when using polled output.
*
*/
static void fbcons_write_support_polled(
rtems_termios_device_context *base,
const char *buf,
size_t len
)
{
int nwrite = 0;
/*
* poll each byte in the string out of the port.
*/
while ( nwrite < len ) {
fbcons_write_polled( base, *buf++ );
nwrite++;
}
}
/*
* fbcons_inbyte_nonblocking_polled
*
* Console Termios polling input entry point.
*/
static int fbcons_inbyte_nonblocking_polled(
rtems_termios_device_context *base
)
{
// if( rtems_kbpoll() ) {
// int c = getch();
// return c;
// }
return -1;
}
/*
* fbcons_set_attributes
*
* This function sets the UART channel to reflect the requested termios
* port settings.
*/
static bool fbcons_set_attributes(
rtems_termios_device_context *base,
const struct termios *t
)
{
return true;
}
bool fbcons_probe(
rtems_termios_device_context *context
)
{
// rtems_status_code status;
static bool firstTime = true;
static bool ret = false;
/*
* keyboard interrupt should be registered when the keyboard is available
*/
if ( firstTime ) {
if ( !rpi_fb_hdmi_is_present() ) {
ret = false;
} else {
ret = true;
}
}
firstTime = false;
return ret;
}
const rtems_termios_device_handler fbcons_fns =
{
.first_open = fbcons_open,
.last_close = fbcons_close,
.poll_read = fbcons_inbyte_nonblocking_polled,
.write = fbcons_write_support_polled,
.set_attributes = fbcons_set_attributes,
.mode = TERMIOS_POLLED
};
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