UART_RBR           17 arch/powerpc/kernel/udbg_16550.c #define UART_RBR	0
UART_RBR           57 arch/sh/include/asm/smc37c93x.h #define UART_RBR	0x0	/* Receiver Buffer Register (Read Only) */
UART_RBR          145 drivers/tty/serial/mvebu-uart.c #define UART_RBR(port) (to_mvuart(port)->data->regs.rbr)