[PATCH v3 2/5] tty: Introduce SER_RS485_SOFTWARE read-only flag for struct serial_rs485

Matwey V. Kornilov
2015-11-12T14:36:23Z

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

Signed-off-by: Matwey V. Kornilov <matwey@sai.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