n_tracerouter and n_tracesink ldisc additions.

The n_tracerouter and n_tracesink line discpline drivers use the
Linux tty line discpline framework to route trace data coming
from a tty port (say UART for example) to the trace sink line
discipline driver and to another tty port(say USB).  Those
these two line discipline drivers can be used together,
independently from pti.c, they are part of the original
implementation solution of the MIPI P1149.7, compact JTAG, PTI
solution for Intel mobile platforms starting with the
Medfield platform.

Signed-off-by: J Freyensee <james_p_freyensee@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/tty.h b/include/linux/tty.h
index 4db4ca79f895..d6f05292e456 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -50,6 +50,8 @@
 #define N_CAIF          20      /* CAIF protocol for talking to modems */
 #define N_GSM0710       21      /* GSM 0710 Mux */
 #define N_TI_WL         22      /* for TI's WL BT, FM, GPS combo chips */
+#define N_TRACESINK     23      /* Trace data routing for MIPI P1149.7 */
+#define N_TRACEROUTER   24      /* Trace data routing for MIPI P1149.7 */
 
 /*
  * This character is the same as _POSIX_VDISABLE: it cannot be used as