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>
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2 changed files with 12 additions and 0 deletions
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@ -77,6 +77,7 @@
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#define TIOCSERSETRS485 0x5461 /* enable rs-485 (deprecated) */
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#define TIOCSERSETRS485 0x5461 /* enable rs-485 (deprecated) */
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#define TIOCSERWRRS485 0x5462 /* write rs-485 */
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#define TIOCSERWRRS485 0x5462 /* write rs-485 */
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#define TIOCSRS485 0x5463 /* enable rs-485 */
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#define TIOCSRS485 0x5463 /* enable rs-485 */
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#define TIOCGRS485 0x542E /* get rs-485 */
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/* Used for packet mode */
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/* Used for packet mode */
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#define TIOCPKT_DATA 0
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#define TIOCPKT_DATA 0
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@ -3724,6 +3724,17 @@ rs_ioctl(struct tty_struct *tty, struct file * file,
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return e100_enable_rs485(tty, &rs485data);
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return e100_enable_rs485(tty, &rs485data);
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}
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}
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case TIOCGRS485:
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{
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struct serial_rs485 *rs485data =
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&(((struct e100_serial *)tty->driver_data)->rs485);
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/* This is the ioctl to get RS485 data from user-space */
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if (copy_to_user((struct serial_rs485 *) arg,
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rs485data,
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sizeof(serial_rs485)))
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return -EFAULT;
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break;
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}
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case TIOCSERWRRS485:
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case TIOCSERWRRS485:
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{
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{
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