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authorFurquan Shaikh <furquan@chromium.org>2017-10-13 10:59:51 -0700
committerFurquan Shaikh <furquan@google.com>2017-10-18 00:38:35 +0000
commite01bf6452fb215a4598fb0edcdbf6e532ee6505f (patch)
tree89e07316c8cd89a5aebd70913bf35cc0bb18acee
parent530c6f9cc8dd2c0cd0c586d3d14f11cb8021242f (diff)
downloadcoreboot-e01bf6452fb215a4598fb0edcdbf6e532ee6505f.tar.xz
google/chromeec: Add new helper function to read MKBP events
This change adds a new helper function google_chromeec_get_mkbp_event that allows coreboot to query EC for the next available MKBP event. Change-Id: Ia6d64586ca62378d08025c96c2689c00c816041f Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/22007 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
-rw-r--r--src/ec/google/chromeec/ec.c15
-rw-r--r--src/ec/google/chromeec/ec.h6
2 files changed, 21 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c
index 639719a85d..113de0ca2c 100644
--- a/src/ec/google/chromeec/ec.c
+++ b/src/ec/google/chromeec/ec.c
@@ -160,6 +160,21 @@ int google_chromeec_clear_events_b(u32 mask)
EC_CMD_HOST_EVENT_CLEAR_B, mask);
}
+int google_chromeec_get_mkbp_event(struct ec_response_get_next_event *event)
+{
+ struct chromeec_command cmd;
+
+ cmd.cmd_code = EC_CMD_GET_NEXT_EVENT;
+ cmd.cmd_version = 0;
+ cmd.cmd_data_in = NULL;
+ cmd.cmd_size_in = 0;
+ cmd.cmd_data_out = event;
+ cmd.cmd_size_out = sizeof(*event);
+ cmd.cmd_dev_index = 0;
+
+ return google_chromeec_command(&cmd);
+}
+
/* Get the current device event mask */
uint32_t google_chromeec_get_device_enabled_events(void)
{
diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h
index 95d744358c..45d9b03df1 100644
--- a/src/ec/google/chromeec/ec.h
+++ b/src/ec/google/chromeec/ec.h
@@ -126,4 +126,10 @@ struct google_chromeec_event_info {
void google_chromeec_events_init(const struct google_chromeec_event_info *info,
bool is_s3_wakeup);
+/*
+ * Get next available MKBP event in ec_response_get_next_event. Returns 0 on
+ * success, < 0 otherwise.
+ */
+int google_chromeec_get_mkbp_event(struct ec_response_get_next_event *event);
+
#endif /* _EC_GOOGLE_CHROMEEC_EC_H */