linux-kernel - [PATCH v3 2/5] tty: Introduce SER_RS485_SOFTWARE read-only flag for struct serial

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Message-Id: <1447338836-8785-3-git-send-email-matwey@sai.msu.ru>
Date:	Thu, 12 Nov 2015 17:33:53 +0300
From:	"Matwey V. Kornilov" <matwey@....msu.ru>
To:	gregkh@...uxfoundation.org, jslaby@...e.com,
	peter@...leysoftware.com
Cc:	"Matwey V. Kornilov" <matwey@....msu.ru>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: [PATCH v3 2/5] tty: Introduce SER_RS485_SOFTWARE read-only flag for struct serial_rs485

This flag is supposed to be used by uart drivers using software rs485 direction control.

Signed-off-by: Matwey V. Kornilov <matwey@....msu.ru>
---
 include/uapi/linux/serial.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/serial.h b/include/uapi/linux/serial.h
index 25331f9..95b15ca 100644
--- a/include/uapi/linux/serial.h
+++ b/include/uapi/linux/serial.h
@@ -121,6 +121,9 @@ struct serial_rs485 {
 #define SER_RS485_RTS_AFTER_SEND	(1 << 2)	/* Logical level for
 							   RTS pin after sent*/
 #define SER_RS485_RX_DURING_TX		(1 << 4)
+#define SER_RS485_SOFTWARE		(1 << 5)	/* Software
+							   implementation is
+							   being used */
 	__u32	delay_rts_before_send;	/* Delay before send (milliseconds) */
 	__u32	delay_rts_after_send;	/* Delay after send (milliseconds) */
 	__u32	padding[5];		/* Memory is cheap, new structs
-- 
2.6.2

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