570  * Returns the nearest supported baud rate that can be set directly without
573 static speed_t pl2303_get_supported_baud_rate(speed_t baud)  in pl2303_get_supported_baud_rate()  argument
584 		if (baud_sup[i] > baud)  in pl2303_get_supported_baud_rate()
589 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
590 	else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1]))  in pl2303_get_supported_baud_rate()
591 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
593 		baud = baud_sup[i];  in pl2303_get_supported_baud_rate()
595 	return baud;  in pl2303_get_supported_baud_rate()
599  * NOTE: If unsupported baud rates are set directly, the PL2303 seems to
600  *       use 9600 baud.
603 								speed_t baud)  in pl2303_encode_baud_rate_direct()  argument
605 	put_unaligned_le32(baud, buf);  in pl2303_encode_baud_rate_direct()
607 	return baud;  in pl2303_encode_baud_rate_direct()
611 								speed_t baud)  in pl2303_encode_baud_rate_divisor()  argument
623 	mantissa = baseline / baud;  in pl2303_encode_baud_rate_divisor()
625 		mantissa = 1;	/* Avoid dividing by zero if baud > 32*12M. */  in pl2303_encode_baud_rate_divisor()
643 	/* Calculate and return the exact baud rate. */  in pl2303_encode_baud_rate_divisor()
644 	baud = (baseline / mantissa) >> (exponent << 1);  in pl2303_encode_baud_rate_divisor()
646 	return baud;  in pl2303_encode_baud_rate_divisor()
650 								speed_t baud)  in pl2303_encode_baud_rate_divisor_alt()  argument
662 	mantissa = baseline / baud;  in pl2303_encode_baud_rate_divisor_alt()
664 		mantissa = 1;   /* Avoid dividing by zero if baud > 32*12M. */  in pl2303_encode_baud_rate_divisor_alt()
682 	/* Calculate and return the exact baud rate. */  in pl2303_encode_baud_rate_divisor_alt()
683 	baud = (baseline / mantissa) >> exponent;  in pl2303_encode_baud_rate_divisor_alt()
685 	return baud;  in pl2303_encode_baud_rate_divisor_alt()
695 	speed_t baud;  in pl2303_encode_baud_rate()  local
697 	baud = tty_get_baud_rate(tty);  in pl2303_encode_baud_rate()
698 	dev_dbg(&port->dev, "baud requested = %u\n", baud);  in pl2303_encode_baud_rate()
699 	if (!baud)  in pl2303_encode_baud_rate()
703 		baud = min_t(speed_t, baud, spriv->type->max_baud_rate);  in pl2303_encode_baud_rate()
705 	 * Use direct method for supported baud rates, otherwise use divisors.  in pl2303_encode_baud_rate()
709 		baud_sup = baud;  in pl2303_encode_baud_rate()
711 		baud_sup = pl2303_get_supported_baud_rate(baud);  in pl2303_encode_baud_rate()
713 	if (baud == baud_sup)  in pl2303_encode_baud_rate()
714 		baud = pl2303_encode_baud_rate_direct(buf, baud);  in pl2303_encode_baud_rate()
716 		baud = pl2303_encode_baud_rate_divisor_alt(buf, baud);  in pl2303_encode_baud_rate()
718 		baud = pl2303_encode_baud_rate_divisor(buf, baud);  in pl2303_encode_baud_rate()
720 	/* Save resulting baud rate */  in pl2303_encode_baud_rate()
721 	tty_encode_baud_rate(tty, baud, baud);  in pl2303_encode_baud_rate()
722 	dev_dbg(&port->dev, "baud set = %u\n", baud);  in pl2303_encode_baud_rate()
820 	/* For reference buf[0]:buf[3] baud rate value */  in pl2303_set_termios()
877 	 * as a previously requested baud rate may differ from the one  in pl2303_set_termios()