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uart_get_baud_rate(9) [centos man page]

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
Kernel Hackers Manual 3.10 June 2014 UART_GET_BAUD_RATE(9)

Check Out this Related Man Page

cfgetispeed(3C) 					   Standard C Library Functions 					   cfgetispeed(3C)

NAME
cfgetispeed, cfgetospeed - get input and output baud rate SYNOPSIS
#include <termios.h> speed_t cfgetispeed(const struct termios *termios_p); speed_t cfgetospeed(const struct termios *termios_p); DESCRIPTION
The cfgetispeed() function extracts the input baud rate from the termios structure to which the termios_p argument points. The cfgetospeed() function extracts the output baud rate from the termios structure to which the termios_p argument points. These functions returns exactly the value in the termios data structure, without interpretation. RETURN VALUES
Upon successful completion, cfgetispeed() returns a value of type speed_t representing the input baud rate. Upon successful completion, cfgetospeed() returns a value of type speed_t representing the output baud rate. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-------------------------------+ |Interface Stability |Standard | +-----------------------------+-------------------------------+ |MT-Level |MT-Safe, and Async-Signal-Safe | +-----------------------------+-------------------------------+ SEE ALSO
cfgetospeed(3C), tcgetattr(3C), attributes(5), standards(5), termio(7I) SunOS 5.11 24 Jul 2002 cfgetispeed(3C)

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