table of contents
| UART_GET_BAUD_RATE(9) | 16x50 UART Driver | UART_GET_BAUD_RATE(9) |
NAME¶
uart_get_baud_rate - return baud rate for a particular port
SYNOPSIS¶
unsigned int uart_get_baud_rate(struct uart_port * port, struct ktermios * termios, struct ktermios * old, unsigned int min, unsigned int max);
ARGUMENTS¶
port
uart_port structure describing the port in
question.
termios
desired termios settings.
old
old termios (or NULL)
min
minimum acceptable baud rate
max
maximum acceptable baud rate
DESCRIPTION¶
Decode the termios structure into a numeric baud rate, taking account of the magic 38400 baud rate (with spd_* flags), and mapping the B0 rate to 9600 baud.
If the new baud rate is invalid, try the old termios setting. If it's still invalid, we try 9600 baud.
Update the termios structure to reflect the baud rate we're actually going to be using. Don't do this for the case where B0 is requested (“hang up”).
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |