Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...

[cascardo/linux.git] / drivers / tty / Kconfig

diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 3fd7199..bd7cc05 100644 (file)
--- 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".