dsp/codecs/audio_ape.c - platform/vendor/opensource/audio-kernel - Gitiles

 /* Copyright (c) 2015-2018, 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.
  *
  */

 #include <linux/types.h>
 #include <linux/msm_audio_ape.h>
 #include <linux/compat.h>
 #include "audio_utils_aio.h"

 static struct miscdevice audio_ape_misc;
 static struct ws_mgr audio_ape_ws_mgr;

 static const struct file_operations audio_ape_debug_fops = {
 	.read = audio_aio_debug_read,
 	.open = audio_aio_debug_open,
 };
 static struct dentry *config_debugfs_create_file(const char *name, void *data)
 {
 	return debugfs_create_file(name, S_IFREG | 0444,
 			NULL, (void *)data, &audio_ape_debug_fops);
 }

 static long audio_ioctl_shared(struct file *file, unsigned int cmd,
 						void *arg)
 {
 	struct q6audio_aio *audio = file->private_data;
 	int rc = 0;

 	switch (cmd) {
 	case AUDIO_START: {
 		struct asm_ape_cfg ape_cfg;
 		struct msm_audio_ape_config *ape_config;

 		pr_debug("%s[%pK]: AUDIO_START session_id[%d]\n", __func__,
 						audio, audio->ac->session);
 		if (audio->feedback == NON_TUNNEL_MODE) {
 			/* Configure PCM output block */
 			rc = q6asm_enc_cfg_blk_pcm(audio->ac,
 					audio->pcm_cfg.sample_rate,
 					audio->pcm_cfg.channel_count);
 			if (rc < 0) {
 				pr_err("pcm output block config failed\n");
 				break;
 			}
 		}
 		ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
 		ape_cfg.compatible_version = ape_config->compatibleVersion;
 		ape_cfg.compression_level = ape_config->compressionLevel;
 		ape_cfg.format_flags = ape_config->formatFlags;
 		ape_cfg.blocks_per_frame = ape_config->blocksPerFrame;
 		ape_cfg.final_frame_blocks = ape_config->finalFrameBlocks;
 		ape_cfg.total_frames = ape_config->totalFrames;
 		ape_cfg.bits_per_sample = ape_config->bitsPerSample;
 		ape_cfg.num_channels = ape_config->numChannels;
 		ape_cfg.sample_rate = ape_config->sampleRate;
 		ape_cfg.seek_table_present = ape_config->seekTablePresent;
 		pr_debug("%s: compatibleVersion %d compressionLevel %d formatFlags %d blocksPerFrame %d finalFrameBlocks %d totalFrames %d bitsPerSample %d numChannels %d sampleRate %d seekTablePresent %d\n",
 				__func__, ape_config->compatibleVersion,
 				ape_config->compressionLevel,
 				ape_config->formatFlags,
 				ape_config->blocksPerFrame,
 				ape_config->finalFrameBlocks,
 				ape_config->totalFrames,
 				ape_config->bitsPerSample,
 				ape_config->numChannels,
 				ape_config->sampleRate,
 				ape_config->seekTablePresent);
 		/* Configure Media format block */
 		rc = q6asm_media_format_block_ape(audio->ac, &ape_cfg,
 							audio->ac->stream_id);
 		if (rc < 0) {
 			pr_err("cmd media format block failed\n");
 			break;
 		}
 		rc = audio_aio_enable(audio);
 		audio->eos_rsp = 0;
 		audio->eos_flag = 0;
 		if (!rc) {
 			audio->enabled = 1;
 		} else {
 			audio->enabled = 0;
 			pr_err("Audio Start procedure failed rc=%d\n", rc);
 			break;
 		}
 		pr_debug("AUDIO_START success enable[%d]\n", audio->enabled);
 		if (audio->stopped == 1)
 			audio->stopped = 0;
 		break;
 	}
 	default:
 		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
 		break;
 	}
 	return rc;
 }

 static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	struct q6audio_aio *audio = file->private_data;
 	int rc = 0;

 	switch (cmd) {
 	case AUDIO_START: {
 		rc = audio_ioctl_shared(file, cmd, (void *)arg);
 		break;
 	}
 	case AUDIO_GET_APE_CONFIG: {
 		if (copy_to_user((void *)arg, audio->codec_cfg,
 			sizeof(struct msm_audio_ape_config))) {
 			pr_err("%s:copy_to_user for AUDIO_GET_APE_CONFIG failed\n",
 				__func__);
 			rc = -EFAULT;
 			break;
 		}
 		break;
 	}
 	case AUDIO_SET_APE_CONFIG: {
 		if (copy_from_user(audio->codec_cfg, (void *)arg,
 			sizeof(struct msm_audio_ape_config))) {
 			pr_err("%s:copy_from_user for AUDIO_SET_APE_CONFIG failed\n",
 				__func__);
 			rc = -EFAULT;
 			break;
 		}
 		break;
 	}
 	default: {
 		pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
 		rc = audio->codec_ioctl(file, cmd, arg);
 		if (rc)
 			pr_err_ratelimited("Failed in utils_ioctl: %d\n", rc);
 		break;
 	}
 	}
 	return rc;
 }

 #ifdef CONFIG_COMPAT
 struct msm_audio_ape_config_32 {
 	u16 compatibleVersion;
 	u16 compressionLevel;
 	u32 formatFlags;
 	u32 blocksPerFrame;
 	u32 finalFrameBlocks;
 	u32 totalFrames;
 	u16 bitsPerSample;
 	u16 numChannels;
 	u32 sampleRate;
 	u32 seekTablePresent;

 };

 enum {
 	AUDIO_GET_APE_CONFIG_32 =  _IOR(AUDIO_IOCTL_MAGIC,
 	(AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_ape_config_32),
 	AUDIO_SET_APE_CONFIG_32 =  _IOW(AUDIO_IOCTL_MAGIC,
 	(AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_ape_config_32)
 };

 static long audio_compat_ioctl(struct file *file, unsigned int cmd,
 						unsigned long arg)
 {
 	struct q6audio_aio *audio = file->private_data;
 	int rc = 0;

 	switch (cmd) {
 	case AUDIO_START: {
 		rc = audio_ioctl_shared(file, cmd, (void *)arg);
 		break;
 	}
 	case AUDIO_GET_APE_CONFIG_32: {
 		struct msm_audio_ape_config *ape_config;
 		struct msm_audio_ape_config_32 ape_config_32;

 		memset(&ape_config_32, 0, sizeof(ape_config_32));

 		ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
 		ape_config_32.compatibleVersion = ape_config->compatibleVersion;
 		ape_config_32.compressionLevel =
 				ape_config->compressionLevel;
 		ape_config_32.formatFlags = ape_config->formatFlags;
 		ape_config_32.blocksPerFrame = ape_config->blocksPerFrame;
 		ape_config_32.finalFrameBlocks = ape_config->finalFrameBlocks;
 		ape_config_32.totalFrames = ape_config->totalFrames;
 		ape_config_32.bitsPerSample = ape_config->bitsPerSample;
 		ape_config_32.numChannels = ape_config->numChannels;
 		ape_config_32.sampleRate = ape_config->sampleRate;
 		ape_config_32.seekTablePresent = ape_config->seekTablePresent;

 		if (copy_to_user((void *)arg, &ape_config_32,
 			sizeof(ape_config_32))) {
 			pr_err("%s: copy_to_user for GET_APE_CONFIG_32 failed\n",
 				 __func__);
 			rc = -EFAULT;
 			break;
 		}
 		break;
 	}
 	case AUDIO_SET_APE_CONFIG_32: {
 		struct msm_audio_ape_config *ape_config;
 		struct msm_audio_ape_config_32 ape_config_32;

 		if (copy_from_user(&ape_config_32, (void *)arg,
 			sizeof(ape_config_32))) {
 			pr_err("%s: copy_from_user for SET_APE_CONFIG_32 failed\n"
 				, __func__);
 			rc = -EFAULT;
 			break;
 		}
 		ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
 		ape_config->compatibleVersion = ape_config_32.compatibleVersion;
 		ape_config->compressionLevel =
 				ape_config_32.compressionLevel;
 		ape_config->formatFlags = ape_config_32.formatFlags;
 		ape_config->blocksPerFrame = ape_config_32.blocksPerFrame;
 		ape_config->finalFrameBlocks = ape_config_32.finalFrameBlocks;
 		ape_config->totalFrames = ape_config_32.totalFrames;
 		ape_config->bitsPerSample = ape_config_32.bitsPerSample;
 		ape_config->numChannels = ape_config_32.numChannels;
 		ape_config->sampleRate = ape_config_32.sampleRate;
 		ape_config->seekTablePresent = ape_config_32.seekTablePresent;

 		break;
 	}
 	default: {
 		pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
 		rc = audio->codec_compat_ioctl(file, cmd, arg);
 		if (rc)
 			pr_err_ratelimited("Failed in utils_ioctl: %d\n", rc);
 		break;
 	}
 	}
 	return rc;
 }
 #else
 #define audio_compat_ioctl NULL
 #endif

 static int audio_open(struct inode *inode, struct file *file)
 {
 	struct q6audio_aio *audio = NULL;
 	int rc = 0;

 	/* 4 bytes represents decoder number, 1 byte for terminate string */
 	char name[sizeof "msm_ape_" + 5];

 	audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);
 	if (!audio)
 		return -ENOMEM;

 	audio->codec_cfg = kzalloc(sizeof(struct msm_audio_ape_config),
 					GFP_KERNEL);
 	if (!audio->codec_cfg) {
 		kfree(audio);
 		return -ENOMEM;
 	}

 	audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN;
 	audio->miscdevice = &audio_ape_misc;
 	audio->wakelock_voted = false;
 	audio->audio_ws_mgr = &audio_ape_ws_mgr;

 	audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_cb,
 					     (void *)audio);

 	if (!audio->ac) {
 		pr_err("Could not allocate memory for audio client\n");
 		kfree(audio->codec_cfg);
 		kfree(audio);
 		return -ENOMEM;
 	}
 	rc = audio_aio_open(audio, file);
 	if (rc < 0) {
 		pr_err("%s: audio_aio_open rc=%d\n",
 			__func__, rc);
 		goto fail;
 	}
 	/* open in T/NT mode */
 	if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) {
 		rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM,
 					   FORMAT_APE);
 		if (rc < 0) {
 			pr_err("NT mode Open failed rc=%d\n", rc);
 			rc = -ENODEV;
 			goto fail;
 		}
 		audio->feedback = NON_TUNNEL_MODE;
 		/* open APE decoder, expected frames is always 1*/
 		audio->buf_cfg.frames_per_buf = 0x01;
 		audio->buf_cfg.meta_info_enable = 0x01;
 	} else if ((file->f_mode & FMODE_WRITE) &&
 			!(file->f_mode & FMODE_READ)) {
 		rc = q6asm_open_write(audio->ac, FORMAT_APE);
 		if (rc < 0) {
 			pr_err("T mode Open failed rc=%d\n", rc);
 			rc = -ENODEV;
 			goto fail;
 		}
 		audio->feedback = TUNNEL_MODE;
 		audio->buf_cfg.meta_info_enable = 0x00;
 	} else {
 		pr_err("Not supported mode\n");
 		rc = -EACCES;
 		goto fail;
 	}

 	snprintf(name, sizeof(name), "msm_ape_%04x", audio->ac->session);
 	audio->dentry = config_debugfs_create_file(name, (void *)audio);

 	if (IS_ERR_OR_NULL(audio->dentry))
 		pr_debug("debugfs_create_file failed\n");
 	pr_debug("%s:apedec success mode[%d]session[%d]\n", __func__,
 						audio->feedback,
 						audio->ac->session);
 	return rc;
 fail:
 	q6asm_audio_client_free(audio->ac);
 	kfree(audio->codec_cfg);
 	kfree(audio);
 	return rc;
 }

 static const struct file_operations audio_ape_fops = {
 	.owner = THIS_MODULE,
 	.open = audio_open,
 	.release = audio_aio_release,
 	.unlocked_ioctl = audio_ioctl,
 	.fsync = audio_aio_fsync,
 	.compat_ioctl = audio_compat_ioctl
 };

 static struct miscdevice audio_ape_misc = {
 	.minor = MISC_DYNAMIC_MINOR,
 	.name = "msm_ape",
 	.fops = &audio_ape_fops,
 };

 int __init audio_ape_init(void)
 {
 	int ret = misc_register(&audio_ape_misc);

 	if (ret == 0)
 		device_init_wakeup(audio_ape_misc.this_device, true);
 	audio_ape_ws_mgr.ref_cnt = 0;
 	mutex_init(&audio_ape_ws_mgr.ws_lock);

 	return ret;
 }

 void audio_ape_exit(void)
 {
 	mutex_destroy(&audio_ape_ws_mgr.ws_lock);
 	misc_deregister(&audio_ape_misc);
 }
	/* Copyright (c) 2015-2018, 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.
	*
	*/

	#include <linux/types.h>
	#include <linux/msm_audio_ape.h>
	#include <linux/compat.h>
	#include "audio_utils_aio.h"

	static struct miscdevice audio_ape_misc;
	static struct ws_mgr audio_ape_ws_mgr;

	static const struct file_operations audio_ape_debug_fops = {
	.read = audio_aio_debug_read,
	.open = audio_aio_debug_open,
	};
	static struct dentry config_debugfs_create_file(const char name, void *data)
	{
	return debugfs_create_file(name, S_IFREG \| 0444,
	NULL, (void *)data, &audio_ape_debug_fops);
	}

	static long audio_ioctl_shared(struct file *file, unsigned int cmd,
	void *arg)
	{
	struct q6audio_aio *audio = file->private_data;
	int rc = 0;

	switch (cmd) {
	case AUDIO_START: {
	struct asm_ape_cfg ape_cfg;
	struct msm_audio_ape_config *ape_config;

	pr_debug("%s[%pK]: AUDIO_START session_id[%d]\n", __func__,
	audio, audio->ac->session);
	if (audio->feedback == NON_TUNNEL_MODE) {
	/* Configure PCM output block */
	rc = q6asm_enc_cfg_blk_pcm(audio->ac,
	audio->pcm_cfg.sample_rate,
	audio->pcm_cfg.channel_count);
	if (rc < 0) {
	pr_err("pcm output block config failed\n");
	break;
	}
	}
	ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
	ape_cfg.compatible_version = ape_config->compatibleVersion;
	ape_cfg.compression_level = ape_config->compressionLevel;
	ape_cfg.format_flags = ape_config->formatFlags;
	ape_cfg.blocks_per_frame = ape_config->blocksPerFrame;
	ape_cfg.final_frame_blocks = ape_config->finalFrameBlocks;
	ape_cfg.total_frames = ape_config->totalFrames;
	ape_cfg.bits_per_sample = ape_config->bitsPerSample;
	ape_cfg.num_channels = ape_config->numChannels;
	ape_cfg.sample_rate = ape_config->sampleRate;
	ape_cfg.seek_table_present = ape_config->seekTablePresent;
	pr_debug("%s: compatibleVersion %d compressionLevel %d formatFlags %d blocksPerFrame %d finalFrameBlocks %d totalFrames %d bitsPerSample %d numChannels %d sampleRate %d seekTablePresent %d\n",
	__func__, ape_config->compatibleVersion,
	ape_config->compressionLevel,
	ape_config->formatFlags,
	ape_config->blocksPerFrame,
	ape_config->finalFrameBlocks,
	ape_config->totalFrames,
	ape_config->bitsPerSample,
	ape_config->numChannels,
	ape_config->sampleRate,
	ape_config->seekTablePresent);
	/* Configure Media format block */
	rc = q6asm_media_format_block_ape(audio->ac, &ape_cfg,
	audio->ac->stream_id);
	if (rc < 0) {
	pr_err("cmd media format block failed\n");
	break;
	}
	rc = audio_aio_enable(audio);
	audio->eos_rsp = 0;
	audio->eos_flag = 0;
	if (!rc) {
	audio->enabled = 1;
	} else {
	audio->enabled = 0;
	pr_err("Audio Start procedure failed rc=%d\n", rc);
	break;
	}
	pr_debug("AUDIO_START success enable[%d]\n", audio->enabled);
	if (audio->stopped == 1)
	audio->stopped = 0;
	break;
	}
	default:
	pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
	break;
	}
	return rc;
	}

	static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
	{
	struct q6audio_aio *audio = file->private_data;
	int rc = 0;

	switch (cmd) {
	case AUDIO_START: {
	rc = audio_ioctl_shared(file, cmd, (void *)arg);
	break;
	}
	case AUDIO_GET_APE_CONFIG: {
	if (copy_to_user((void *)arg, audio->codec_cfg,
	sizeof(struct msm_audio_ape_config))) {
	pr_err("%s:copy_to_user for AUDIO_GET_APE_CONFIG failed\n",
	__func__);
	rc = -EFAULT;
	break;
	}
	break;
	}
	case AUDIO_SET_APE_CONFIG: {
	if (copy_from_user(audio->codec_cfg, (void *)arg,
	sizeof(struct msm_audio_ape_config))) {
	pr_err("%s:copy_from_user for AUDIO_SET_APE_CONFIG failed\n",
	__func__);
	rc = -EFAULT;
	break;
	}
	break;
	}
	default: {
	pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
	rc = audio->codec_ioctl(file, cmd, arg);
	if (rc)
	pr_err_ratelimited("Failed in utils_ioctl: %d\n", rc);
	break;
	}
	}
	return rc;
	}

	#ifdef CONFIG_COMPAT
	struct msm_audio_ape_config_32 {
	u16 compatibleVersion;
	u16 compressionLevel;
	u32 formatFlags;
	u32 blocksPerFrame;
	u32 finalFrameBlocks;
	u32 totalFrames;
	u16 bitsPerSample;
	u16 numChannels;
	u32 sampleRate;
	u32 seekTablePresent;

	};

	enum {
	AUDIO_GET_APE_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC,
	(AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_ape_config_32),
	AUDIO_SET_APE_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC,
	(AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_ape_config_32)
	};

	static long audio_compat_ioctl(struct file *file, unsigned int cmd,
	unsigned long arg)
	{
	struct q6audio_aio *audio = file->private_data;
	int rc = 0;

	switch (cmd) {
	case AUDIO_START: {
	rc = audio_ioctl_shared(file, cmd, (void *)arg);
	break;
	}
	case AUDIO_GET_APE_CONFIG_32: {
	struct msm_audio_ape_config *ape_config;
	struct msm_audio_ape_config_32 ape_config_32;

	memset(&ape_config_32, 0, sizeof(ape_config_32));

	ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
	ape_config_32.compatibleVersion = ape_config->compatibleVersion;
	ape_config_32.compressionLevel =
	ape_config->compressionLevel;
	ape_config_32.formatFlags = ape_config->formatFlags;
	ape_config_32.blocksPerFrame = ape_config->blocksPerFrame;
	ape_config_32.finalFrameBlocks = ape_config->finalFrameBlocks;
	ape_config_32.totalFrames = ape_config->totalFrames;
	ape_config_32.bitsPerSample = ape_config->bitsPerSample;
	ape_config_32.numChannels = ape_config->numChannels;
	ape_config_32.sampleRate = ape_config->sampleRate;
	ape_config_32.seekTablePresent = ape_config->seekTablePresent;

	if (copy_to_user((void *)arg, &ape_config_32,
	sizeof(ape_config_32))) {
	pr_err("%s: copy_to_user for GET_APE_CONFIG_32 failed\n",
	__func__);
	rc = -EFAULT;
	break;
	}
	break;
	}
	case AUDIO_SET_APE_CONFIG_32: {
	struct msm_audio_ape_config *ape_config;
	struct msm_audio_ape_config_32 ape_config_32;

	if (copy_from_user(&ape_config_32, (void *)arg,
	sizeof(ape_config_32))) {
	pr_err("%s: copy_from_user for SET_APE_CONFIG_32 failed\n"
	, __func__);
	rc = -EFAULT;
	break;
	}
	ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
	ape_config->compatibleVersion = ape_config_32.compatibleVersion;
	ape_config->compressionLevel =
	ape_config_32.compressionLevel;
	ape_config->formatFlags = ape_config_32.formatFlags;
	ape_config->blocksPerFrame = ape_config_32.blocksPerFrame;
	ape_config->finalFrameBlocks = ape_config_32.finalFrameBlocks;
	ape_config->totalFrames = ape_config_32.totalFrames;
	ape_config->bitsPerSample = ape_config_32.bitsPerSample;
	ape_config->numChannels = ape_config_32.numChannels;
	ape_config->sampleRate = ape_config_32.sampleRate;
	ape_config->seekTablePresent = ape_config_32.seekTablePresent;

	break;
	}
	default: {
	pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
	rc = audio->codec_compat_ioctl(file, cmd, arg);
	if (rc)
	pr_err_ratelimited("Failed in utils_ioctl: %d\n", rc);
	break;
	}
	}
	return rc;
	}
	#else
	#define audio_compat_ioctl NULL
	#endif

	static int audio_open(struct inode inode, struct file file)
	{
	struct q6audio_aio *audio = NULL;
	int rc = 0;

	/* 4 bytes represents decoder number, 1 byte for terminate string */
	char name[sizeof "msm_ape_" + 5];

	audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);
	if (!audio)
	return -ENOMEM;

	audio->codec_cfg = kzalloc(sizeof(struct msm_audio_ape_config),
	GFP_KERNEL);
	if (!audio->codec_cfg) {
	kfree(audio);
	return -ENOMEM;
	}

	audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN;
	audio->miscdevice = &audio_ape_misc;
	audio->wakelock_voted = false;
	audio->audio_ws_mgr = &audio_ape_ws_mgr;

	audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_cb,
	(void *)audio);

	if (!audio->ac) {
	pr_err("Could not allocate memory for audio client\n");
	kfree(audio->codec_cfg);
	kfree(audio);
	return -ENOMEM;
	}
	rc = audio_aio_open(audio, file);
	if (rc < 0) {
	pr_err("%s: audio_aio_open rc=%d\n",
	__func__, rc);
	goto fail;
	}
	/* open in T/NT mode */
	if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) {
	rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM,
	FORMAT_APE);
	if (rc < 0) {
	pr_err("NT mode Open failed rc=%d\n", rc);
	rc = -ENODEV;
	goto fail;
	}
	audio->feedback = NON_TUNNEL_MODE;
	/* open APE decoder, expected frames is always 1*/
	audio->buf_cfg.frames_per_buf = 0x01;
	audio->buf_cfg.meta_info_enable = 0x01;
	} else if ((file->f_mode & FMODE_WRITE) &&
	!(file->f_mode & FMODE_READ)) {
	rc = q6asm_open_write(audio->ac, FORMAT_APE);
	if (rc < 0) {
	pr_err("T mode Open failed rc=%d\n", rc);
	rc = -ENODEV;
	goto fail;
	}
	audio->feedback = TUNNEL_MODE;
	audio->buf_cfg.meta_info_enable = 0x00;
	} else {
	pr_err("Not supported mode\n");
	rc = -EACCES;
	goto fail;
	}

	snprintf(name, sizeof(name), "msm_ape_%04x", audio->ac->session);
	audio->dentry = config_debugfs_create_file(name, (void *)audio);

	if (IS_ERR_OR_NULL(audio->dentry))
	pr_debug("debugfs_create_file failed\n");
	pr_debug("%s:apedec success mode[%d]session[%d]\n", __func__,
	audio->feedback,
	audio->ac->session);
	return rc;
	fail:
	q6asm_audio_client_free(audio->ac);
	kfree(audio->codec_cfg);
	kfree(audio);
	return rc;
	}

	static const struct file_operations audio_ape_fops = {
	.owner = THIS_MODULE,
	.open = audio_open,
	.release = audio_aio_release,
	.unlocked_ioctl = audio_ioctl,
	.fsync = audio_aio_fsync,
	.compat_ioctl = audio_compat_ioctl
	};

	static struct miscdevice audio_ape_misc = {
	.minor = MISC_DYNAMIC_MINOR,
	.name = "msm_ape",
	.fops = &audio_ape_fops,
	};

	int __init audio_ape_init(void)
	{
	int ret = misc_register(&audio_ape_misc);

	if (ret == 0)
	device_init_wakeup(audio_ape_misc.this_device, true);
	audio_ape_ws_mgr.ref_cnt = 0;
	mutex_init(&audio_ape_ws_mgr.ws_lock);

	return ret;
	}

	void audio_ape_exit(void)
	{
	mutex_destroy(&audio_ape_ws_mgr.ws_lock);
	misc_deregister(&audio_ape_misc);
	}