1UART_GET_BAUD_RATE(9)          16x50 UART Driver         UART_GET_BAUD_RATE(9)
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NAME

6       uart_get_baud_rate - return baud rate for a particular port
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SYNOPSIS

9       unsigned int uart_get_baud_rate(struct uart_port * port,
10                                       struct ktermios * termios,
11                                       struct ktermios * old,
12                                       unsigned int min, unsigned int max);
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ARGUMENTS

15       port
16           uart_port structure describing the port in question.
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18       termios
19           desired termios settings.
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21       old
22           old termios (or NULL)
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24       min
25           minimum acceptable baud rate
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27       max
28           maximum acceptable baud rate
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DESCRIPTION

31       Decode the termios structure into a numeric baud rate, taking account
32       of the magic 38400 baud rate (with spd_* flags), and mapping the B0
33       rate to 9600 baud.
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35       If the new baud rate is invalid, try the old termios setting. If it's
36       still invalid, we try 9600 baud.
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38       Update the termios structure to reflect the baud rate we're actually
39       going to be using. Don't do this for the case where B0 is requested
40       (“hang up”).
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43Kernel Hackers Manual 3.10         June 2019             UART_GET_BAUD_RATE(9)
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