From 79df1208ee6984aa63468673c042667d121bb0bc Mon Sep 17 00:00:00 2001 From: Dave Aldridge Date: Thu, 1 Sep 2011 22:47:14 +0000 Subject: ns16550: change to allow 32 bit access to registers If CONFIG_SYS_NS16550_MEM32 is defined then 32 bit memory mapped access will be used to read/write the uart registers. This is especially useful for SoC devices that implement 16550 compatible uarts but that have peripheral access width constraints. Signed-off-by: Dave Aldridge --- include/ns16550.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/ns16550.h') diff --git a/include/ns16550.h b/include/ns16550.h index 9ea81e9463..51f1c17b31 100644 --- a/include/ns16550.h +++ b/include/ns16550.h @@ -21,8 +21,12 @@ * will not allocate storage for arrays of size 0 */ +#include + #if !defined(CONFIG_SYS_NS16550_REG_SIZE) || (CONFIG_SYS_NS16550_REG_SIZE == 0) #error "Please define NS16550 registers size." +#elif defined(CONFIG_SYS_NS16550_MEM32) +#define UART_REG(x) u32 x #elif (CONFIG_SYS_NS16550_REG_SIZE > 0) #define UART_REG(x) \ unsigned char prepad_##x[CONFIG_SYS_NS16550_REG_SIZE - 1]; \ -- cgit v1.2.1