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serial: general fixes in the serial_rs485 structure

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Fix several issues related to the RS485 interface:

 - It adds the flag SER_RS485_RTS_BEFORE_SEND that was missing from the
   serial_rs485 structure (even if "delay_rts_before_send" was existing)

 - It adds a further "delay_rts_after_send" field for those drivers that
   can have a delay after send (e.g., atmel_serial)

 - It fixes the usage of the structure in the atmel_serial driver (where
   "delay_rts_before_send" should be used instead of "delay_rts_after_send").

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Bernhard Roth <br@pwrnet.de>
Cc: Philippe De Muyter <phdm@macqel.be>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Claudio Scordino 2010-07-20 15:26:47 -07:00 • committed by Greg Kroah-Hartman
parent 93e3d58284
commit 1b6331848b
2 changed files with 11 additions and 4 deletions
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4
include/linux/serial.h
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@ -210,8 +210,10 @@ struct serial_rs485 {
#define SER_RS485_ENABLED (1 << 0)
#define SER_RS485_RTS_ON_SEND (1 << 1)
#define SER_RS485_RTS_AFTER_SEND (1 << 2)
#define SER_RS485_RTS_BEFORE_SEND (1 << 3)
__u32 delay_rts_before_send; /* Milliseconds */
__u32 padding[6]; /* Memory is cheap, new structs
__u32 delay_rts_after_send; /* Milliseconds */
__u32 padding[5]; /* Memory is cheap, new structs
are a royal PITA .. */
};