From 7ec758718920e5e5876d0d02ece6855128c8eb1e Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 16 Nov 2015 17:40:57 +0000 Subject: tty: amba-pl011: add support for ZTE UART (EXPERIMENTAL) Add (incomplete) support for the ZTE UART to the AMBA PL011 driver. This is similar to the ARM and ST variants, except it has a different register address layout, and requires 32-bit accesses to the registers. Use the newly introduced register tables and access size support to cope with these differences. Signed-off-by: Russell King Reviewed-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- include/linux/amba/serial.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux/amba/serial.h') diff --git a/include/linux/amba/serial.h b/include/linux/amba/serial.h index 0ddb5c0..d76a19b 100644 --- a/include/linux/amba/serial.h +++ b/include/linux/amba/serial.h @@ -65,6 +65,24 @@ #define ST_UART011_ABCR 0x100 /* Autobaud control register. */ #define ST_UART011_ABIMSC 0x15C /* Autobaud interrupt mask/clear register. */ +/* + * ZTE UART register offsets. This UART has a radically different address + * allocation from the ARM and ST variants, so we list all registers here. + * We assume unlisted registers do not exist. + */ +#define ZX_UART011_DR 0x04 +#define ZX_UART011_FR 0x14 +#define ZX_UART011_IBRD 0x24 +#define ZX_UART011_FBRD 0x28 +#define ZX_UART011_LCRH 0x30 +#define ZX_UART011_CR 0x34 +#define ZX_UART011_IFLS 0x38 +#define ZX_UART011_IMSC 0x40 +#define ZX_UART011_RIS 0x44 +#define ZX_UART011_MIS 0x48 +#define ZX_UART011_ICR 0x4c +#define ZX_UART011_DMACR 0x50 + #define UART011_DR_OE (1 << 11) #define UART011_DR_BE (1 << 10) #define UART011_DR_PE (1 << 9) -- cgit v1.1