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 --- drivers/serial/ns16550.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/serial/ns16550.c') diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c index 8eeb48f..0174744 100644 --- a/drivers/serial/ns16550.c +++ b/drivers/serial/ns16550.c @@ -19,6 +19,12 @@ #ifdef CONFIG_SYS_NS16550_PORT_MAPPED #define serial_out(x,y) outb(x,(ulong)y) #define serial_in(y) inb((ulong)y) +#elif defined(CONFIG_SYS_NS16550_MEM32) && (CONFIG_SYS_NS16550_REG_SIZE > 0) +#define serial_out(x,y) out_be32(y,x) +#define serial_in(y) in_be32(y) +#elif defined(CONFIG_SYS_NS16550_MEM32) && (CONFIG_SYS_NS16550_REG_SIZE < 0) +#define serial_out(x,y) out_le32(y,x) +#define serial_in(y) in_le32(y) #else #define serial_out(x,y) writeb(x,y) #define serial_in(y) readb(y) -- cgit v1.1