audio-kernel: asoc: ipc: add support for MDSP target

Add support for MDSP based targets.

Change-Id: Iac1402db89b321e85d4ccdb3863d697484c8251e
Signed-off-by: Josh Kirsch <[email protected]>

ipc/apr_tal_rpmsg.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  */
 
 #include <linux/module.h>
@@ -10,6 +10,7 @@
 #include <linux/delay.h>
 #include <linux/rpmsg.h>
 #include <ipc/apr_tal.h>
+#include <linux/of_device.h>
 
 enum apr_channel_state {
 	APR_CH_DISCONNECTED,
@@ -125,14 +126,13 @@ struct apr_svc_ch_dev *apr_tal_open(uint32_t clnt, uint32_t dest, uint32_t dl,
 	int rc = 0;
 	struct apr_svc_ch_dev *apr_ch = NULL;
 
-	if ((clnt != APR_CLIENT_AUDIO) || (dest != APR_DEST_QDSP6) ||
+	if ((clnt != APR_CLIENT_AUDIO) || (dest >= APR_DEST_MAX) ||
 	    (dl != APR_DL_SMD)) {
 		pr_err("%s: Invalid params, clnt:%d, dest:%d, dl:%d\n",
 		       __func__, clnt, dest, dl);
 		return NULL;
 	}
-
-	apr_ch = &apr_svc_ch[APR_DL_SMD][APR_DEST_QDSP6][APR_CLIENT_AUDIO];
+	apr_ch = &apr_svc_ch[dl][dest][clnt];
 	mutex_lock(&apr_ch->m_lock);
 	if (!apr_ch->handle) {
 		rc = wait_event_timeout(apr_ch->wait,
@@ -207,24 +207,46 @@ static int apr_tal_rpmsg_callback(struct rpmsg_device *rpdev,
 static int apr_tal_rpmsg_probe(struct rpmsg_device *rpdev)
 {
 	struct apr_svc_ch_dev *apr_ch = NULL;
+	int ret = 0;
+	const char* dest;
+
+	ret = of_property_read_string(rpdev->dev.parent->of_node,
+				   "mbox-names", &dest);
+
+	if(ret < 0){
+		pr_err("%s no parent source pid found\n", __func__);
+		return -EINVAL;
+	}
 
 	if (!strcmp(rpdev->id.name, "apr_audio_svc")) {
 		dev_info(&rpdev->dev, "%s: Channel[%s] state[Up]\n",
 			 __func__, rpdev->id.name);
-
+	} else {
+		dev_err(&rpdev->dev, "%s, Invalid Channel [%s]\n",
+			__func__, rpdev->id.name);
+		return -EINVAL;
+	}
+	if(strstr(dest, "adsp")) {
 		apr_ch =
 		&apr_svc_ch[APR_DL_SMD][APR_DEST_QDSP6][APR_CLIENT_AUDIO];
 		apr_ch->handle = rpdev;
 		apr_ch->channel_state = APR_CH_CONNECTED;
 		dev_set_drvdata(&rpdev->dev, apr_ch);
 		wake_up(&apr_ch->wait);
+	} else if(strstr(dest, "mpss")) {
+		apr_ch =
+		&apr_svc_ch[APR_DL_SMD][APR_DEST_MODEM][APR_CLIENT_AUDIO];
+		apr_ch->handle = rpdev;
+		apr_ch->channel_state = APR_CH_CONNECTED;
+		dev_set_drvdata(&rpdev->dev, apr_ch);
+		wake_up(&apr_ch->wait);
 	} else {
-		dev_err(&rpdev->dev, "%s, Invalid Channel [%s]\n",
-			__func__, rpdev->id.name);
+		dev_err(&rpdev->dev, "%s, unsupported dest %s\n",
+			__func__, dest);
 		return -EINVAL;
 	}
 
-	return 0;
+	return ret;
 }
 
 static void apr_tal_rpmsg_remove(struct rpmsg_device *rpdev)

ipc/apr_v3.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2016, 2019 The Linux Foundation. All rights reserved.
  */
 
 #include <linux/types.h>
@@ -13,10 +13,16 @@
 
 #define DEST_ID APR_DEST_MODEM
 
+/**
+ * apr_get_subsys_state - get modem subsys status
+ *
+ * Returns apr_subsys_state
+ */
 enum apr_subsys_state apr_get_subsys_state(void)
 {
 	return apr_get_modem_state();
 }
+EXPORT_SYMBOL(apr_get_subsys_state);
 
 void apr_set_subsys_state(void)
 {