3 files changed, 284 insertions, 0 deletions
diff --git a/include/linux/qdsp6v2/audio_notifier.h b/include/linux/qdsp6v2/audio_notifier.h
new file mode 100644
index 000000000000..3587b49a05c6
--- /dev/null
+++ b/include/linux/qdsp6v2/audio_notifier.h
@@ -0,0 +1,105 @@
+/* Copyright (c) 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.
+ *
+ */
+
+#ifndef __AUDIO_NOTIFIER_H_
+#define __AUDIO_NOTIFIER_H_
+
+/* State of the notifier domain */
+enum {
+	AUDIO_NOTIFIER_SERVICE_DOWN,
+	AUDIO_NOTIFIER_SERVICE_UP
+};
+
+/* Service order determines connection priority
+ * Highest number connected first
+ */
+enum {
+	AUDIO_NOTIFIER_SSR_SERVICE,
+	AUDIO_NOTIFIER_PDR_SERVICE,
+	AUDIO_NOTIFIER_MAX_SERVICES
+};
+
+enum {
+	AUDIO_NOTIFIER_ADSP_DOMAIN,
+	AUDIO_NOTIFIER_MODEM_DOMAIN,
+	AUDIO_NOTIFIER_MAX_DOMAINS
+};
+
+/* Structure populated in void *data of nb function
+ * callback used for audio_notifier_register
+ */
+struct audio_notifier_cb_data {
+	int service;
+	int domain;
+};
+
+#ifdef CONFIG_MSM_QDSP6_NOTIFIER
+
+/*
+ * Use audio_notifier_register to register any audio
+ * clients who need to be notified of a remote process.
+ * This API will determine and register the client with
+ * the best available subsystem (SSR or PDR) for that
+ * domain (Adsp or Modem). When an event is sent from that
+ * domain the notifier block callback function will be called.
+ *
+ * client_name - A unique user name defined by the client.
+ *	If the same name is used for multiple calls each will
+ *	be tracked & called back separately and a single call
+ *	to deregister will delete them all.
+ * domain - Domain the client wants to get events from.
+ *	AUDIO_NOTIFIER_ADSP_DOMAIN
+ *	AUDIO_NOTIFIER_MODEM_DOMAIN
+ * *nb - Pointer to a notifier block. Provide a callback function
+ *	to be notified of an even on that domain.
+ *
+ *      nb_func(struct notifier_block *this, unsigned long opcode, void *data)
+ *		this - pointer to own nb
+ *		opcode - event from registered domain
+ *			AUDIO_NOTIFIER_SERVICE_DOWN
+ *			AUDIO_NOTIFIER_SERVICE_UP
+ *		*data - pointer to struct audio_notifier_cb_data
+ *
+ * Returns:	Success: 0
+ *		Error: -#
+ */
+int audio_notifier_register(char *client_name, int domain,
+			    struct notifier_block *nb);
+
+/*
+ * Use audio_notifier_deregister to deregister the clients from
+ * all domains registered using audio_notifier_register that
+ * match the client name.
+ *
+ * client_name - Unique user name used in audio_notifier_register.
+ * Returns:	Success: 0
+ *		Error: -#
+ */
+int audio_notifier_deregister(char *client_name);
+
+#else
+
+static inline int audio_notifier_register(char *client_name, int domain,
+					  struct notifier_block *nb)
+{
+	return -ENODEV;
+}
+
+static inline int audio_notifier_deregister(char *client_name)
+{
+	return 0;
+}
+
+#endif /* CONFIG_MSM_QDSP6_PDR */
+
+#endif
diff --git a/include/linux/qdsp6v2/audio_pdr.h b/include/linux/qdsp6v2/audio_pdr.h
new file mode 100644
index 000000000000..b8eb1be3ee64
--- /dev/null
+++ b/include/linux/qdsp6v2/audio_pdr.h
@@ -0,0 +1,101 @@
+/* Copyright (c) 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.
+ *
+ */
+
+#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
diff --git a/include/linux/qdsp6v2/audio_ssr.h b/include/linux/qdsp6v2/audio_ssr.h
new file mode 100644
index 000000000000..a807021ba7ca
--- /dev/null
+++ b/include/linux/qdsp6v2/audio_ssr.h
@@ -0,0 +1,78 @@
+/* Copyright (c) 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.
+ *
+ */
+
+#ifndef __AUDIO_SSR_H_
+#define __AUDIO_SSR_H_
+
+enum {
+	AUDIO_SSR_DOMAIN_ADSP,
+	AUDIO_SSR_DOMAIN_MODEM,
+	AUDIO_SSR_DOMAIN_MAX
+};
+
+#ifdef CONFIG_MSM_QDSP6_SSR
+
+/*
+ * Use audio_ssr_register to register with the SSR subsystem
+ *
+ * domain_id - Service to use, example: AUDIO_SSR_DOMAIN_ADSP
+ * *nb - Pointer to a notifier block. Provide a callback function
+ *       to be notified of an event for that service. The ioctls
+ *       used by the callback are defined in subsystem_notif.h.
+ *
+ * Returns: Success: Client handle
+ *          Failure: Pointer error code
+ */
+void *audio_ssr_register(int domain_id, struct notifier_block *nb);
+
+/*
+ * Use audio_ssr_deregister to register with the SSR subsystem
+ *
+ * handle - Handle received from audio_ssr_register
+ * *nb - Pointer to a notifier block. Callback function
+ *       Used from audio_ssr_register.
+ *
+ * Returns: Success: 0
+ *          Failure: Error code
+ */
+int audio_ssr_deregister(void *handle, struct notifier_block *nb);
+
+
+/*
+ * Use audio_ssr_send_nmi to force a RAM dump on ADSP
+ * down event.
+ *
+ * *ssr_cb_data - *data received from notifier callback
+ */
+void audio_ssr_send_nmi(void *ssr_cb_data);
+
+#else
+
+static inline void *audio_ssr_register(int domain_id,
+				       struct notifier_block *nb)
+{
+	return NULL;
+}
+
+static inline int audio_ssr_deregister(void *handle, struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline void audio_ssr_send_nmi(void *ssr_cb_data)
+{
+}
+
+#endif /* CONFIG_MSM_QDSP6_SSR */
+
+#endif