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authorAlexey Starikovskiy <aystarik@gmail.com>2016-09-21 12:44:14 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-27 12:54:03 +0200
commit36131cdfef5aef7f4a9a36423a7a338bd6f68ad6 (patch)
tree7d75168490b71e02d839a8f56446238aead9f083 /include
parente98d41370392dbc3e94c8802ce4e9eec9efdf92e (diff)
tty/serial: atmel: fix fractional baud rate computation
The problem with previous code was it rounded values in wrong place and produced wrong baud rate in some cases. Signed-off-by: Alexey Starikovskiy <aystarik@gmail.com> [nicolas.ferre@atmel.com: port to newer kernel and add commit log] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/atmel_serial.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/atmel_serial.h b/include/linux/atmel_serial.h
index f8e452aa48d7..bd2560502f3c 100644
--- a/include/linux/atmel_serial.h
+++ b/include/linux/atmel_serial.h
@@ -119,6 +119,7 @@
#define ATMEL_US_BRGR 0x20 /* Baud Rate Generator Register */
#define ATMEL_US_CD GENMASK(15, 0) /* Clock Divider */
#define ATMEL_US_FP_OFFSET 16 /* Fractional Part */
+#define ATMEL_US_FP_MASK 0x7
#define ATMEL_US_RTOR 0x24 /* Receiver Time-out Register for USART */
#define ATMEL_UA_RTOR 0x28 /* Receiver Time-out Register for UART */