asoc: msm_common: call spf_apm_close_all only once

Add lock to avoid calling spf_apm_close_all twice from
machine driver.

Change-Id: Id5f40b0a5f7c336aa900db5657f5fab198c6e359

asoc/msm_common.c

@@ -113,8 +113,6 @@ static ssize_t aud_dev_sysfs_store(struct kobject *kobj,
 	pr_debug("%s: pcm_id %d state %d \n", __func__, pcm_id, state);
 
 	pdata->aud_dev_state[pcm_id] = state;
-	if ( state == DEVICE_ENABLE && (pdata->dsp_sessions_closed != 0))
-		pdata->dsp_sessions_closed = 0;
 
 	ret = count;
 done:
@@ -225,22 +223,29 @@ done:
 static void check_userspace_service_state(struct snd_soc_pcm_runtime *rtd,
 						struct msm_common_pdata *pdata)
 {
+	uint32_t i;
+
 	dev_info(rtd->card->dev,"%s: pcm_id %d state %d\n", __func__,
-				rtd->num, pdata->aud_dev_state[rtd->num]);
+			rtd->num, pdata->aud_dev_state[rtd->num]);
 
+	mutex_lock(&pdata->aud_dev_lock);
 	if (pdata->aud_dev_state[rtd->num] == DEVICE_ENABLE) {
 		dev_info(rtd->card->dev, "%s userspace service crashed\n",
-					__func__);
-		if (pdata->dsp_sessions_closed == 0) {
-			/*Issue close all graph cmd to DSP*/
-			spf_core_apm_close_all();
-			/*unmap all dma mapped buffers*/
-			msm_audio_ion_crash_handler();
-			pdata->dsp_sessions_closed = 1;
-		}
+				__func__);
 		/*Reset the state as sysfs node wont be triggred*/
-		pdata->aud_dev_state[rtd->num] = 0;
+		pdata->aud_dev_state[rtd->num] = DEVICE_DISABLE;
+		for (i = 0; i < pdata->num_aud_devs; i++) {
+			if (pdata->aud_dev_state[i] == DEVICE_ENABLE)
+				goto exit;
+		}
+		/*Issue close all graph cmd to DSP*/
+		spf_core_apm_close_all();
+		/*unmap all dma mapped buffers*/
+		msm_audio_ion_crash_handler();
 	}
+exit:
+	mutex_unlock(&pdata->aud_dev_lock);
+	return;
 }
 
 static int get_mi2s_tdm_auxpcm_intf_index(const char *stream_name)
@@ -763,6 +768,7 @@ int msm_common_snd_init(struct platform_device *pdev, struct snd_soc_card *card)
 						sizeof(uint8_t), GFP_KERNEL);
 	dev_info(&pdev->dev, "num_links %d \n", card->num_links);
 	common_pdata->num_aud_devs = card->num_links;
+	mutex_init(&common_pdata->aud_dev_lock);
 
 	aud_dev_sysfs_init(common_pdata);
 
@@ -783,6 +789,7 @@ void msm_common_snd_deinit(struct msm_common_pdata *common_pdata)
 
 	msm_audio_remove_qos_request();
 
+	mutex_destroy(&common_pdata->aud_dev_lock);
 	for (count = 0; count < MI2S_TDM_AUXPCM_MAX; count++) {
 		mutex_destroy(&common_pdata->lock[count]);
 	}

asoc/msm_common.h

@@ -1,13 +1,7 @@
-/* Copyright (c) 2020-2021, 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.
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 #ifndef _MSM_COMMON_H_
 #define _MSM_COMMON_H_
@@ -40,7 +34,7 @@ typedef enum snd_card_status_t {
 struct msm_common_pdata {
 	uint8_t *aud_dev_state;
 	struct kobject aud_dev_kobj;
-	uint8_t dsp_sessions_closed;
+	struct mutex aud_dev_lock;
 	uint32_t num_aud_devs;
 	struct device_node *mi2s_gpio_p[MI2S_TDM_AUXPCM_MAX];
 	struct mutex lock[MI2S_TDM_AUXPCM_MAX];