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authorGwendal Grignou <gwendal@chromium.org>2017-05-16 18:46:48 +0300
committerBenson Leung <bleung@chromium.org>2017-06-16 23:57:44 +0300
commit68c35ea25bdd4ad10445c4c02f7d48b3dccab8cc (patch)
treeef13d2554f06434b37f871311168228aa95594bf /drivers/platform/chrome
parent32c1431eea4881a6b17bd7c639315010aeefa452 (diff)
downloadlinux-68c35ea25bdd4ad10445c4c02f7d48b3dccab8cc.tar.xz
mfd: cros_ec: Add helper for event notifier.
Add cros_ec_get_event() entry point to retrieve event within functions called by the notifier. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Benson Leung <bleung@chromium.org>
Diffstat (limited to 'drivers/platform/chrome')
-rw-r--r--drivers/platform/chrome/cros_ec_proto.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index ed5dee744c74..7428c2b965bb 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -494,3 +494,23 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev)
return get_keyboard_state_event(ec_dev);
}
EXPORT_SYMBOL(cros_ec_get_next_event);
+
+u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev)
+{
+ u32 host_event;
+
+ BUG_ON(!ec_dev->mkbp_event_supported);
+
+ if (ec_dev->event_data.event_type != EC_MKBP_EVENT_HOST_EVENT)
+ return 0;
+
+ if (ec_dev->event_size != sizeof(host_event)) {
+ dev_warn(ec_dev->dev, "Invalid host event size\n");
+ return 0;
+ }
+
+ host_event = get_unaligned_le32(&ec_dev->event_data.data.host_event);
+
+ return host_event;
+}
+EXPORT_SYMBOL(cros_ec_get_host_event);