diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/ns16550.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/ns16550.h b/include/ns16550.h index d1f3a90..d93e28e 100644 --- a/include/ns16550.h +++ b/include/ns16550.h @@ -170,3 +170,16 @@ void NS16550_putc(NS16550_t com_port, char c); char NS16550_getc(NS16550_t com_port); int NS16550_tstc(NS16550_t com_port); void NS16550_reinit(NS16550_t com_port, int baud_divisor); + +/** + * ns16550_calc_divisor() - calculate the divisor given clock and baud rate + * + * Given the UART input clock and required baudrate, calculate the divisor + * that should be used. + * + * @port: UART port + * @clock: UART input clock speed in Hz + * @baudrate: Required baud rate + * @return baud rate divisor that should be used + */ +int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate); |