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
unsigned int uart_get_baud_rate(struct uart_port * port, struct ktermios * termios, struct ktermios * old, unsigned int min,
unsigned int max);
uart_port structure describing the port in question.
desired termios settings.
old termios (or NULL)
minimum acceptable baud rate
maximum acceptable baud rate
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
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 UART_GET_BAUD_RATE(9)
Check Out this Related Man Page
cfgetispeed(3) Library Functions Manual cfgetispeed(3)NAME
cfgetispeed - Gets the input baud rate for a terminal
Standard C Library (libc.so, libc.a)
const struct termios *termios_p);
Interfaces documented on this reference page conform to industry standards as follows:
cfgetispeed(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
Points to a termios structure containing the input baud rate.
The cfgetispeed() function extracts the input baud rate from the termios structure to which the termios_p parameter points.
This function returns exactly the value in the termios structure, without interpretation.
Upon successful completion, the cfgetispeed() function returns a value of type speed_t representing the input baud rate.
Functions: cfgetospeed(3), cfsetispeed(3), cfsetospeed(3), tcgetattr(3)
Standards: standards(5) delim off
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