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CRIS: ioctl for getting RS485 information 

Add ioctl to CRIS serial driver to get RS485 data from user-space.

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
This commit is contained in:
Claudio Scordino 2010-05-31 10:19:09 +02:00 committed by Jesper Nilsson
parent 9fe6206f40
commit f1d23ed821
2 changed files with 12 additions and 0 deletions
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1
arch/cris/include/asm/ioctls.h
View File

@ -77,6 +77,7 @@
#define TIOCSERSETRS485 0x5461 /* enable rs-485 (deprecated) */
#define TIOCSERWRRS485 0x5462 /* write rs-485 */
#define TIOCSRS485 0x5463 /* enable rs-485 */
#define TIOCGRS485 0x542E /* get rs-485 */
/* Used for packet mode */
#define TIOCPKT_DATA 0

11
drivers/serial/crisv10.c
View File

@ -3724,6 +3724,17 @@ rs_ioctl(struct tty_struct *tty, struct file * file,
return e100_enable_rs485(tty, &rs485data);
}
case TIOCGRS485:
{
struct serial_rs485 *rs485data =
&(((struct e100_serial *)tty->driver_data)->rs485);
/* This is the ioctl to get RS485 data from user-space */
if (copy_to_user((struct serial_rs485 *) arg,
rs485data,
sizeof(serial_rs485)))
return -EFAULT;
break;
}
case TIOCSERWRRS485:
{