395  * Returns the nearest supported baud rate that can be set directly without
398 static speed_t pl2303_get_supported_baud_rate(speed_t baud)  in pl2303_get_supported_baud_rate()  argument
409 		if (baud_sup[i] > baud)  in pl2303_get_supported_baud_rate()
414 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
415 	else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1]))  in pl2303_get_supported_baud_rate()
416 		baud = baud_sup[i - 1];  in pl2303_get_supported_baud_rate()
418 		baud = baud_sup[i];  in pl2303_get_supported_baud_rate()
420 	return baud;  in pl2303_get_supported_baud_rate()
424  * NOTE: If unsupported baud rates are set directly, the PL2303 seems to
425  *       use 9600 baud.
428 								speed_t baud)  in pl2303_encode_baud_rate_direct()  argument
430 	put_unaligned_le32(baud, buf);  in pl2303_encode_baud_rate_direct()
432 	return baud;  in pl2303_encode_baud_rate_direct()
436 								speed_t baud)  in pl2303_encode_baud_rate_divisor()  argument
448 	mantissa = baseline / baud;  in pl2303_encode_baud_rate_divisor()
450 		mantissa = 1;	/* Avoid dividing by zero if baud > 32*12M. */  in pl2303_encode_baud_rate_divisor()
468 	/* Calculate and return the exact baud rate. */  in pl2303_encode_baud_rate_divisor()
469 	baud = (baseline / mantissa) >> (exponent << 1);  in pl2303_encode_baud_rate_divisor()
471 	return baud;  in pl2303_encode_baud_rate_divisor()
481 	speed_t baud;  in pl2303_encode_baud_rate()  local
483 	baud = tty_get_baud_rate(tty);  in pl2303_encode_baud_rate()
484 	dev_dbg(&port->dev, "baud requested = %u\n", baud);  in pl2303_encode_baud_rate()
485 	if (!baud)  in pl2303_encode_baud_rate()
489 		baud = min_t(speed_t, baud, spriv->type->max_baud_rate);  in pl2303_encode_baud_rate()
491 	 * Use direct method for supported baud rates, otherwise use divisors.  in pl2303_encode_baud_rate()
493 	baud_sup = pl2303_get_supported_baud_rate(baud);  in pl2303_encode_baud_rate()
495 	if (baud == baud_sup)  in pl2303_encode_baud_rate()
496 		baud = pl2303_encode_baud_rate_direct(buf, baud);  in pl2303_encode_baud_rate()
498 		baud = pl2303_encode_baud_rate_divisor(buf, baud);  in pl2303_encode_baud_rate()
500 	/* Save resulting baud rate */  in pl2303_encode_baud_rate()
501 	tty_encode_baud_rate(tty, baud, baud);  in pl2303_encode_baud_rate()
502 	dev_dbg(&port->dev, "baud set = %u\n", baud);  in pl2303_encode_baud_rate()
598 	/* For reference buf[0]:buf[3] baud rate value */  in pl2303_set_termios()
655 	 * as a previously requested baud rate may differ from the one  in pl2303_set_termios()