[ARM] 5541/1: serial/amba-pl011.c: add support for the modified port found in Nomadik

The Nomadik 8815 SoC has a slightly modified version of the PL011 block.
The patch uses the different ID value as a key to select a vendor
structure that is used to keep track of the differences, as suggested
by Russell King.

Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/amba/serial.h b/include/linux/amba/serial.h
index 48ee32a18ac5..42949e210cb8 100644
--- a/include/linux/amba/serial.h
+++ b/include/linux/amba/serial.h
@@ -114,6 +114,9 @@
 #define UART011_IFLS_TX4_8      (2 << 0)
 #define UART011_IFLS_TX6_8      (3 << 0)
 #define UART011_IFLS_TX7_8      (4 << 0)
+/* special values for ST vendor with deeper fifo */
+#define UART011_IFLS_RX_HALF    (5 << 3)
+#define UART011_IFLS_TX_HALF    (5 << 0)
 
 #define UART011_OEIM            (1 << 10)       /* overrun error interrupt mask */
 #define UART011_BEIM            (1 << 9)        /* break error interrupt mask */