audio-lnx: Initial change for techpack of audio drivers.
Add snapshot for audio drivers for SDM targets. The code is
migrated from msm-4.9 kernel at the below cutoff -
(74ff856e8d6: "net: ipc_router: Add dynamic enable/disable
wakeup source feature")
This changes are done for new techpack addition
for audio kernel. Migrate all audio kernel drivers
to this techpack.
Change-Id: I33d580af3ba86a5cb777583efc5d4cdaf2882d93
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>
diff --git a/include/linux/qdsp6v2/audio_pdr.h b/include/linux/qdsp6v2/audio_pdr.h
new file mode 100644
index 0000000..ebfd366
--- /dev/null
+++ b/include/linux/qdsp6v2/audio_pdr.h
@@ -0,0 +1,101 @@
+/* Copyright (c) 2016-2017, 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.
+ *
+ */
+
+#ifndef __AUDIO_PDR_H_
+#define __AUDIO_PDR_H_
+
+enum {
+ AUDIO_PDR_DOMAIN_ADSP,
+ AUDIO_PDR_DOMAIN_MAX
+};
+
+enum {
+ AUDIO_PDR_FRAMEWORK_DOWN,
+ AUDIO_PDR_FRAMEWORK_UP
+};
+
+#ifdef CONFIG_MSM_QDSP6_PDR
+
+/*
+ * Use audio_pdr_register to register with the PDR subsystem this
+ * should be done before module late init otherwise notification
+ * of the AUDIO_PDR_FRAMEWORK_UP cannot be guaranteed.
+ *
+ * *nb - Pointer to a notifier block. Provide a callback function
+ * to be notified once the PDR framework has been initialized.
+ * Callback will receive either the AUDIO_PDR_FRAMEWORK_DOWN
+ * or AUDIO_PDR_FRAMEWORK_UP ioctl depending on the state of
+ * the PDR framework.
+ *
+ * Returns: Success: 0
+ * Failure: Error code
+ */
+int audio_pdr_register(struct notifier_block *nb);
+
+/*
+ * Use audio_pdr_service_register to register with a PDR service
+ * Function should be called after nb callback registered with
+ * audio_pdr_register has been called back with the
+ * AUDIO_PDR_FRAMEWORK_UP ioctl.
+ *
+ * domain_id - Domain to use, example: AUDIO_PDR_ADSP
+ * *nb - Pointer to a notifier block. Provide a callback function
+ * that will be notified of the state of the domain
+ * requested. The ioctls received by the callback are
+ * defined in service-notifier.h.
+ *
+ * Returns: Success: Client handle
+ * Failure: Pointer error code
+ */
+void *audio_pdr_service_register(int domain_id,
+ struct notifier_block *nb, int *curr_state);
+
+/*
+ * Use audio_pdr_service_deregister to deregister with a PDR
+ * service that was registered using the audio_pdr_service_register
+ * API.
+ *
+ * *service_handle - Service handle returned by audio_pdr_service_register
+ * *nb - Pointer to the notifier block. Used in the call to
+ * audio_pdr_service_register.
+ *
+ * Returns: Success: Client handle
+ * Failure: Error code
+ */
+int audio_pdr_service_deregister(void *service_handle,
+ struct notifier_block *nb);
+
+#else
+
+static inline int audio_pdr_register(struct notifier_block *nb)
+{
+ return -ENODEV;
+}
+
+
+static inline void *audio_pdr_service_register(int domain_id,
+ struct notifier_block *nb,
+ int *curr_state)
+{
+ return NULL;
+}
+
+static inline int audio_pdr_service_deregister(void *service_handle,
+ struct notifier_block *nb)
+{
+ return 0;
+}
+
+#endif /* CONFIG_MSM_QDSP6_PDR */
+
+#endif