/**
* @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 <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_init
*
* This function initializes the fb console to a quiecsent state.
*/
static void fbcons_init( int minor )
{
}
/*
* fbcons_open
*
* This function opens a port for communication.
*
* Default state is 9600 baud, 8 bits, No parity, and 1 stop bit.
*/
static int fbcons_open(
int major,
int minor,
void *arg
)
{
return RTEMS_SUCCESSFUL;
}
/*
* fbcons_close
*
* This function shuts down the requested port.
*/
static int fbcons_close(
int major,
int minor,
void *arg
)
{
return ( RTEMS_SUCCESSFUL );
}
/*
* fbcons_write_polled
*
* This routine polls out the requested character.
*/
static void fbcons_write_polled(
int minor,
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 ssize_t fbcons_write_support_polled(
int minor,
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( minor, *buf++ );
nwrite++;
}
/*
* return the number of bytes written.
*/
return nwrite;
}
/*
* fbcons_inbyte_nonblocking_polled
*
* Console Termios polling input entry point.
*/
static int fbcons_inbyte_nonblocking_polled( int minor )
{
// 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 int fbcons_set_attributes(
int minor,
const struct termios *t
)
{
return 0;
}
bool fbcons_probe( int minor )
{
// 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 console_fns fbcons_fns =
{
.deviceProbe = libchip_serial_default_probe, /* deviceProbe */
.deviceFirstOpen = fbcons_open, /* deviceFirstOpen */
.deviceLastClose = fbcons_close, /* deviceLastClose */
.deviceRead = fbcons_inbyte_nonblocking_polled, /* deviceRead */
.deviceWrite = fbcons_write_support_polled, /* deviceWrite */
.deviceInitialize = fbcons_init, /* deviceInitialize */
.deviceWritePolled = fbcons_write_polled, /* deviceWritePolled */
.deviceSetAttributes = fbcons_set_attributes, /* deviceSetAttributes */
.deviceOutputUsesInterrupts = FALSE, /* deviceOutputUsesInterrupts*/
};
