480  * Returns the nearest supported baud rate that can be set directly without
483 static speed_t pl2303_get_supported_baud_rate(speed_t baud)  in pl2303_get_supported_baud_rate()  argument
494 		if (baud_sup[i] > baud)  in pl2303_get_supported_baud_rate()
499 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
500 	else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1]))  in pl2303_get_supported_baud_rate()
501 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
503 		baud = baud_sup[i];  in pl2303_get_supported_baud_rate()
505 	return baud;  in pl2303_get_supported_baud_rate()
509  * NOTE: If unsupported baud rates are set directly, the PL2303 seems to
510  *       use 9600 baud.
513 								speed_t baud)  in pl2303_encode_baud_rate_direct()  argument
515 	put_unaligned_le32(baud, buf);  in pl2303_encode_baud_rate_direct()
517 	return baud;  in pl2303_encode_baud_rate_direct()
521 								speed_t baud)  in pl2303_encode_baud_rate_divisor()  argument
533 	mantissa = baseline / baud;  in pl2303_encode_baud_rate_divisor()
535 		mantissa = 1;	/* Avoid dividing by zero if baud > 32*12M. */  in pl2303_encode_baud_rate_divisor()
553 	/* Calculate and return the exact baud rate. */  in pl2303_encode_baud_rate_divisor()
554 	baud = (baseline / mantissa) >> (exponent << 1);  in pl2303_encode_baud_rate_divisor()
556 	return baud;  in pl2303_encode_baud_rate_divisor()
566 	speed_t baud;  in pl2303_encode_baud_rate()  local
568 	baud = tty_get_baud_rate(tty);  in pl2303_encode_baud_rate()
569 	dev_dbg(&port->dev, "baud requested = %u\n", baud);  in pl2303_encode_baud_rate()
570 	if (!baud)  in pl2303_encode_baud_rate()
574 		baud = min_t(speed_t, baud, spriv->type->max_baud_rate);  in pl2303_encode_baud_rate()
576 	 * Use direct method for supported baud rates, otherwise use divisors.  in pl2303_encode_baud_rate()
580 		baud_sup = baud;  in pl2303_encode_baud_rate()
582 		baud_sup = pl2303_get_supported_baud_rate(baud);  in pl2303_encode_baud_rate()
584 	if (baud == baud_sup)  in pl2303_encode_baud_rate()
585 		baud = pl2303_encode_baud_rate_direct(buf, baud);  in pl2303_encode_baud_rate()
587 		baud = pl2303_encode_baud_rate_divisor(buf, baud);  in pl2303_encode_baud_rate()
589 	/* Save resulting baud rate */  in pl2303_encode_baud_rate()
590 	tty_encode_baud_rate(tty, baud, baud);  in pl2303_encode_baud_rate()
591 	dev_dbg(&port->dev, "baud set = %u\n", baud);  in pl2303_encode_baud_rate()
701 	/* For reference buf[0]:buf[3] baud rate value */  in pl2303_set_termios()
758 	 * as a previously requested baud rate may differ from the one  in pl2303_set_termios()