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uart_get_baud_rate
Langue: en
Version: October 2010 (fedora - 01/12/10)
Section: 9 (Appels noyau Linux)
NAME
uart_get_baud_rate - return baud rate for a particular portSYNOPSIS
- 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 (lqhang uprq).
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