C++ (Cpp) sci_schedule_break_timer示例

示例#1

文件： sh-sci.c 项目： mobilipia/iods

/* Ensure that two consecutive samples find the break over. */
static void sci_break_timer(unsigned long data)
{
	struct sci_port *port = (struct sci_port *)data;

	if (sci_rxd_in(&port->port) == 0) {
		port->break_flag = 1;
		sci_schedule_break_timer(port);
	} else if (port->break_flag == 1) {
		/* break is over. */
		port->break_flag = 2;
		sci_schedule_break_timer(port);
	} else
		port->break_flag = 0;
}

示例#2

static inline int sci_handle_errors(struct uart_port *port)
{
	int copied = 0;
	unsigned short status = sci_in(port, SCxSR);
	struct tty_struct *tty = port->info->port.tty;

	if (status & SCxSR_ORER(port)) {
		/* overrun error */
		if (tty_insert_flip_char(tty, 0, TTY_OVERRUN))
			copied++;
		pr_debug("sci: overrun error\n");
	}

	if (status & SCxSR_FER(port)) {
		if (sci_rxd_in(port) == 0) {
			/* Notify of BREAK */
			struct sci_port *sci_port = (struct sci_port *)port;

			if (!sci_port->break_flag) {
				sci_port->break_flag = 1;
				sci_schedule_break_timer(sci_port);

				/* Do sysrq handling. */
				if (uart_handle_break(port))
					return 0;
			        pr_debug("sci: BREAK detected\n");
				if (tty_insert_flip_char(tty, 0, TTY_BREAK))
				        copied++;
                       }
		} else {
			/* frame error */
			if (tty_insert_flip_char(tty, 0, TTY_FRAME))
				copied++;
			pr_debug("sci: frame error\n");
		}
	}

	if (status & SCxSR_PER(port)) {
		/* parity error */
		if (tty_insert_flip_char(tty, 0, TTY_PARITY))
			copied++;
		pr_debug("sci: parity error\n");
	}

	if (copied)
		tty_flip_buffer_push(tty);

	return copied;
}