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| author |   Claudio Scordino <claudio@evidence.eu.com> | 2010-05-31 10:19:09 +0200 |
|---|---|---|
| committer |   Jesper Nilsson <jesper.nilsson@axis.com> | 2010-08-09 14:10:32 +0200 |
| commit | f1d23ed8218ca5afaf178a6495253dbb7fc98f57 (patch) | |
| tree | e80045aba944222321ea47ba1dd8a5a2fc741348 | |
| parent | Linux 2.6.35 (diff) | |
| download | linux-dev-f1d23ed8218ca5afaf178a6495253dbb7fc98f57.tar.xz linux-dev-f1d23ed8218ca5afaf178a6495253dbb7fc98f57.zip | |
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>
| -rw-r--r-- | arch/cris/include/asm/ioctls.h | 1 | ||||
| -rw-r--r-- | drivers/serial/crisv10.c | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/cris/include/asm/ioctls.h b/arch/cris/include/asm/ioctls.h index 35bbc181598a..076c07824eb6 100644 --- a/arch/cris/include/asm/ioctls.h +++ b/arch/cris/include/asm/ioctls.h @@ -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 diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c index 31f172397af3..30626440a062 100644 --- a/drivers/serial/crisv10.c +++ b/drivers/serial/crisv10.c @@ -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: { |