mfd: cros_ec: Add helper for event notifier. (68c35ea2) · Commits · 戴 / test

drivers/platform/chrome/cros_ec_proto.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -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);

+10 −0

Original line number	Diff line number	Diff line
		@@ -300,6 +300,16 @@ int cros_ec_query_all(struct cros_ec_device *ec_dev);
		*/
		int cros_ec_get_next_event(struct cros_ec_device *ec_dev);

		/**
		* cros_ec_get_host_event - Return a mask of event set by the EC.
		*
		* When MKBP is supported, when the EC raises an interrupt,
		* We collect the events raised and call the functions in the ec notifier.
		*
		* This function is a helper to know which events are raised.
		*/
		u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);

		/* sysfs stuff */
		extern struct attribute_group cros_ec_attr_group;
		extern struct attribute_group cros_ec_lightbar_attr_group;