Messages in this thread Patch in this message | | | From | Jiri Slaby <> | Subject | [PATCH 1/5] tty: serial: define UART_LCR_WLEN() macro | Date | Thu, 24 Feb 2022 10:55:54 +0100 |
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Define a generic UART_LCR_WLEN() macro with a size argument. It can be used to encode byte size into an LCR value. Therefore we can use it to simplify the drivers using tty_get_char_size() in the next patches.
Signed-off-by: Jiri Slaby <jslaby@suse.cz> --- include/uapi/linux/serial_reg.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/serial_reg.h b/include/uapi/linux/serial_reg.h index f51bc8f36813..c9d5ff6dd4c6 100644 --- a/include/uapi/linux/serial_reg.h +++ b/include/uapi/linux/serial_reg.h @@ -111,6 +111,7 @@ #define UART_LCR_WLEN6 0x01 /* Wordlength: 6 bits */ #define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */ #define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */ +#define UART_LCR_WLEN(x) ((x) - 5) /* * Access to some registers depends on register access / configuration -- 2.35.1
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