int getc(void)
{
unsigned char ch;
uint64_t start;
/*
* For 100us we read the characters from the serial driver
* into a kfifo. This helps us not to lose characters
* in small hardware fifos.
*/
start = get_time_ns();
while (1) {
if (tstc_raw()) {
kfifo_putc(console_input_fifo, getc_raw());
start = get_time_ns();
}
if (is_timeout(start, 100 * USECOND) &&
kfifo_len(console_input_fifo))
break;
}
kfifo_getc(console_input_fifo, &ch);
return ch;
}
int tstc(void)
{
if (unlikely(!console_is_input_allow()))
return 0;
return kfifo_len(console_input_fifo) || tstc_raw();
}
int tstc(void)
{
return kfifo_len(console_input_fifo) || tstc_raw();
}
