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-rw-r--r--drivers/tty/Kconfig31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 3fd7199301b6..bd7cc0527999 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -319,3 +319,34 @@ config N_GSM
This line discipline provides support for the GSM MUX protocol and
presents the mux as a set of 61 individual tty devices.
+config TRACE_ROUTER
+ tristate "Trace data router for MIPI P1149.7 cJTAG standard"
+ depends on TRACE_SINK
+ default n
+ help
+ The trace router uses the Linux tty line discipline 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). This is part of a solution for the MIPI P1149.7, compact JTAG,
+ standard, which is for debugging mobile devices. The PTI driver in
+ drivers/misc/pti.c defines the majority of this MIPI solution.
+
+ You should select this driver if the target kernel is meant for
+ a mobile device containing a modem. Then you will need to select
+ "Trace data sink for MIPI P1149.7 cJTAG standard" line discipline
+ driver.
+
+config TRACE_SINK
+ tristate "Trace data sink for MIPI P1149.7 cJTAG standard"
+ default n
+ help
+ The trace sink uses the Linux line discipline framework to receive
+ trace data coming from the trace router line discipline driver
+ to a user-defined tty port target, like USB.
+ This is to provide a way to extract modem trace data on
+ devices that do not have a PTI HW module, or just need modem
+ trace data to come out of a different HW output port.
+ This is part of a solution for the P1149.7, compact JTAG, standard.
+
+ If you select this option, you need to select
+ "Trace data router for MIPI P1149.7 cJTAG standard".