Input: cros_ec_keyb - add an EC event for sysrq

Some form factors (detachables/tablets) may not have a keyboard and
thus user may have to resort to using a defined EC UI to send sysrq(s)
to the kernel in order to collect crash info etc. This UI typically
is in the form of user pressing volume / power buttons in some specific
sequence and for some specific time. Add a new EC event that allows EC
to communicate the sysrq to the AP.

(We're skipping event number 5 because it has been reserved for
something else)

Signed-off-by: Rajat Jain <rajatja@google.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index da1c188562bc..3ceebf6b9afb 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -2040,6 +2040,9 @@ enum ec_mkbp_event {
         /* The state of the switches have changed. */
         EC_MKBP_EVENT_SWITCH = 4,
 
+        /* EC sent a sysrq command */
+        EC_MKBP_EVENT_SYSRQ = 6,
+
         /* Number of MKBP events */
         EC_MKBP_EVENT_COUNT,
 };
@@ -2052,6 +2055,7 @@ union ec_response_get_next_data {
 
         uint32_t   buttons;
         uint32_t   switches;
+        uint32_t   sysrq;
 } __packed;
 
 struct ec_response_get_next_event {