soc: qcom: Export Service notifier driver APIs

Export the service notifier APIs so that other kernel
clients can use them.

CRs-Fixed: 999530
Change-Id: I48fd55ae7991b64f818543dfcc963bc75135f714
Signed-off-by: Pushkar Joshi <pushkarj@codeaurora.org>
Signed-off-by: Puja Gupta <pujag@codeaurora.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/include/soc/qcom/service-notifier.h b/include/soc/qcom/service-notifier.h
new file mode 100644
index 000000000000..be3f134eebe3
--- /dev/null
+++ b/include/soc/qcom/service-notifier.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * Process Domain Service Notifier API header
+ */
+
+#ifndef _SERVICE_NOTIFIER_H
+#define _SERVICE_NOTIFIER_H
+
+enum qmi_servreg_notif_service_state_enum_type_v01 {
+	QMI_SERVREG_NOTIF_SERVICE_STATE_ENUM_TYPE_MIN_VAL_V01 = INT_MIN,
+	QMI_SERVREG_NOTIF_SERVICE_STATE_ENUM_TYPE_MAX_VAL_V01 = INT_MAX,
+	SERVREG_NOTIF_SERVICE_STATE_DOWN_V01 = 0x0FFFFFFF,
+	SERVREG_NOTIF_SERVICE_STATE_UP_V01 = 0x1FFFFFFF,
+	SERVREG_NOTIF_SERVICE_STATE_UNINIT_V01 = 0x7FFFFFFF,
+};
+
+#if defined(CONFIG_MSM_SERVICE_NOTIFIER)
+
+/* service_notif_register_notifier() - Register a notifier for a service
+ * On success, it returns back a handle. It takes the following arguments:
+ * service_path: Individual service identifier path for which a client
+ *		registers for notifications.
+ * instance_id: Instance id specific to a subsystem.
+ * current_state: Current state of service returned by the registration
+ *		 process.
+ * notifier block: notifier callback for service events.
+ */
+void *service_notif_register_notifier(const char *service_path, int instance_id,
+				struct notifier_block *nb, int *curr_state);
+
+/* service_notif_unregister_notifier() - Unregister a notifier for a service.
+ * service_notif_handle - The notifier handler that was provided by the
+ *			  service_notif_register_notifier function when the
+ *			  client registered for notifications.
+ * nb - The notifier block that was previously used during the registration.
+ */
+int service_notif_unregister_notifier(void *service_notif_handle,
+					struct notifier_block *nb);
+
+#else
+
+static void *service_notif_register_notifier(const char *service_path,
+				int instance_id, struct notifier_block *nb,
+				int *curr_state)
+{
+	return -ENODEV;
+}
+
+static int service_notif_unregister_notifier(void *service_notif_handle,
+					struct notifier_block *nb)
+{
+	return -ENODEV;
+}
+
+#endif /* CONFIG_MSM_SERVICE_NOTIFIER */
+
+#endif