593  * Returns the nearest supported baud rate that can be set directly without
596 static speed_t pl2303_get_supported_baud_rate(speed_t baud)  in pl2303_get_supported_baud_rate()  argument
607 		if (baud_sup[i] > baud)  in pl2303_get_supported_baud_rate()
612 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
613 	else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1]))  in pl2303_get_supported_baud_rate()
614 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
616 		baud = baud_sup[i];  in pl2303_get_supported_baud_rate()
618 	return baud;  in pl2303_get_supported_baud_rate()
622  * NOTE: If unsupported baud rates are set directly, the PL2303 seems to
623  *       use 9600 baud.
626 								speed_t baud)  in pl2303_encode_baud_rate_direct()  argument
628 	put_unaligned_le32(baud, buf);  in pl2303_encode_baud_rate_direct()
630 	return baud;  in pl2303_encode_baud_rate_direct()
634 								speed_t baud)  in pl2303_encode_baud_rate_divisor()  argument
646 	mantissa = baseline / baud;  in pl2303_encode_baud_rate_divisor()
648 		mantissa = 1;	/* Avoid dividing by zero if baud > 32*12M. */  in pl2303_encode_baud_rate_divisor()
666 	/* Calculate and return the exact baud rate. */  in pl2303_encode_baud_rate_divisor()
667 	baud = (baseline / mantissa) >> (exponent << 1);  in pl2303_encode_baud_rate_divisor()
669 	return baud;  in pl2303_encode_baud_rate_divisor()
673 								speed_t baud)  in pl2303_encode_baud_rate_divisor_alt()  argument
685 	mantissa = baseline / baud;  in pl2303_encode_baud_rate_divisor_alt()
687 		mantissa = 1;   /* Avoid dividing by zero if baud > 32*12M. */  in pl2303_encode_baud_rate_divisor_alt()
705 	/* Calculate and return the exact baud rate. */  in pl2303_encode_baud_rate_divisor_alt()
706 	baud = (baseline / mantissa) >> exponent;  in pl2303_encode_baud_rate_divisor_alt()
708 	return baud;  in pl2303_encode_baud_rate_divisor_alt()
718 	speed_t baud;  in pl2303_encode_baud_rate()  local
720 	baud = tty_get_baud_rate(tty);  in pl2303_encode_baud_rate()
721 	dev_dbg(&port->dev, "baud requested = %u\n", baud);  in pl2303_encode_baud_rate()
722 	if (!baud)  in pl2303_encode_baud_rate()
726 		baud = min_t(speed_t, baud, spriv->type->max_baud_rate);  in pl2303_encode_baud_rate()
728 	 * Use direct method for supported baud rates, otherwise use divisors.  in pl2303_encode_baud_rate()
732 		baud_sup = baud;  in pl2303_encode_baud_rate()
734 		baud_sup = pl2303_get_supported_baud_rate(baud);  in pl2303_encode_baud_rate()
736 	if (baud == baud_sup)  in pl2303_encode_baud_rate()
737 		baud = pl2303_encode_baud_rate_direct(buf, baud);  in pl2303_encode_baud_rate()
739 		baud = pl2303_encode_baud_rate_divisor_alt(buf, baud);  in pl2303_encode_baud_rate()
741 		baud = pl2303_encode_baud_rate_divisor(buf, baud);  in pl2303_encode_baud_rate()
743 	/* Save resulting baud rate */  in pl2303_encode_baud_rate()
744 	tty_encode_baud_rate(tty, baud, baud);  in pl2303_encode_baud_rate()
745 	dev_dbg(&port->dev, "baud set = %u\n", baud);  in pl2303_encode_baud_rate()
852 	/* For reference buf[0]:buf[3] baud rate value */  in pl2303_set_termios()
909 	 * as a previously requested baud rate may differ from the one  in pl2303_set_termios()