1 files changed, 698 insertions, 0 deletions

diff --git a/drivers/misc/qcom/qdsp6v2/aac_in.c b/drivers/misc/qcom/qdsp6v2/aac_in.c
new file mode 100644
index 000000000000..c9d5dbb0b313
--- /dev/null
+++ b/drivers/misc/qcom/qdsp6v2/aac_in.c
@@ -0,0 +1,698 @@
+/*
+ * Copyright (c) 2010-2015, 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/module.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/msm_audio_aac.h>
+#include <linux/compat.h>
+#include <asm/atomic.h>
+#include <asm/ioctls.h>
+#include "audio_utils.h"
+
+
+/* Buffer with meta*/
+#define PCM_BUF_SIZE		(4096 + sizeof(struct meta_in))
+
+/* Maximum 5 frames in buffer with meta */
+#define FRAME_SIZE		(1 + ((1536+sizeof(struct meta_out_dsp)) * 5))
+
+#define AAC_FORMAT_ADTS 65535
+
+static long aac_in_ioctl_shared(struct file *file, unsigned int cmd, void *arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+	int cnt = 0;
+
+	switch (cmd) {
+	case AUDIO_START: {
+		struct msm_audio_aac_enc_config *enc_cfg;
+		struct msm_audio_aac_config *aac_config;
+		uint32_t aac_mode = AAC_ENC_MODE_AAC_LC;
+
+		enc_cfg = audio->enc_cfg;
+		aac_config = audio->codec_cfg;
+		/* ENCODE CFG (after new set of API's are published )bharath*/
+		pr_debug("%s:session id %d: default buf alloc[%d]\n", __func__,
+				audio->ac->session, audio->buf_alloc);
+		if (audio->enabled == 1) {
+			pr_info("%s:AUDIO_START already over\n", __func__);
+			rc = 0;
+			break;
+		}
+
+		if (audio->opened) {
+			rc = audio_in_buf_alloc(audio);
+			if (rc < 0) {
+				pr_err("%s:session id %d: buffer allocation failed\n",
+					 __func__, audio->ac->session);
+				break;
+			}
+		} else {
+			if (audio->feedback == NON_TUNNEL_MODE) {
+				pr_debug("%s: starting in non_tunnel mode",
+					__func__);
+				rc = q6asm_open_read_write(audio->ac,
+					FORMAT_MPEG4_AAC, FORMAT_LINEAR_PCM);
+				if (rc < 0) {
+					pr_err("%s:open read write failed\n",
+						__func__);
+					break;
+				}
+			}
+			if (audio->feedback == TUNNEL_MODE) {
+				pr_debug("%s: starting in tunnel mode",
+					__func__);
+				rc = q6asm_open_read(audio->ac,
+							FORMAT_MPEG4_AAC);
+
+				if (rc < 0) {
+					pr_err("%s:open read failed\n",
+							__func__);
+					break;
+				}
+			}
+			audio->stopped = 0;
+		}
+
+		pr_debug("%s:sbr_ps_flag = %d, sbr_flag = %d\n", __func__,
+			aac_config->sbr_ps_on_flag, aac_config->sbr_on_flag);
+		if (aac_config->sbr_ps_on_flag)
+			aac_mode = AAC_ENC_MODE_EAAC_P;
+		else if (aac_config->sbr_on_flag)
+			aac_mode = AAC_ENC_MODE_AAC_P;
+		else
+			aac_mode = AAC_ENC_MODE_AAC_LC;
+
+		rc = q6asm_enc_cfg_blk_aac(audio->ac,
+					audio->buf_cfg.frames_per_buf,
+					enc_cfg->sample_rate,
+					enc_cfg->channels,
+					enc_cfg->bit_rate,
+					aac_mode,
+					enc_cfg->stream_format);
+		if (rc < 0) {
+			pr_err("%s:session id %d: cmd media format block"
+				"failed\n", __func__, audio->ac->session);
+			break;
+		}
+		if (audio->feedback == NON_TUNNEL_MODE) {
+			rc = q6asm_media_format_block_pcm(audio->ac,
+						audio->pcm_cfg.sample_rate,
+						audio->pcm_cfg.channel_count);
+			if (rc < 0) {
+				pr_err("%s:session id %d: media format block"
+				"failed\n", __func__, audio->ac->session);
+				break;
+			}
+		}
+		rc = audio_in_enable(audio);
+		if (!rc) {
+			audio->enabled = 1;
+		} else {
+			audio->enabled = 0;
+			pr_err("%s:session id %d: Audio Start procedure"
+			"failed rc=%d\n", __func__, audio->ac->session, rc);
+			break;
+		}
+		while (cnt++ < audio->str_cfg.buffer_count)
+			q6asm_read(audio->ac);
+		pr_debug("%s:session id %d: AUDIO_START success enable[%d]\n",
+				__func__, audio->ac->session, audio->enabled);
+		break;
+	}
+	case AUDIO_STOP: {
+		pr_debug("%s:session id %d: Rxed AUDIO_STOP\n", __func__,
+				audio->ac->session);
+		rc = audio_in_disable(audio);
+		if (rc  < 0) {
+			pr_err("%s:session id %d: Audio Stop procedure failed"
+				"rc=%d\n", __func__, audio->ac->session, rc);
+			break;
+		}
+		break;
+	}
+	case AUDIO_GET_AAC_ENC_CONFIG: {
+		struct msm_audio_aac_enc_config *cfg;
+		struct msm_audio_aac_enc_config *enc_cfg;
+
+		cfg = (struct msm_audio_aac_enc_config *)arg;
+		if (cfg == NULL) {
+			pr_err("%s: NULL config pointer for %s\n",
+			__func__, "AUDIO_GET_AAC_CONFIG");
+			rc = -EINVAL;
+			break;
+		}
+		memset(cfg, 0, sizeof(*cfg));
+		enc_cfg = audio->enc_cfg;
+		if (enc_cfg->channels == CH_MODE_MONO)
+			cfg->channels = 1;
+		else
+			cfg->channels = 2;
+
+		cfg->sample_rate = enc_cfg->sample_rate;
+		cfg->bit_rate = enc_cfg->bit_rate;
+		switch (enc_cfg->stream_format) {
+		case 0x00:
+			cfg->stream_format = AUDIO_AAC_FORMAT_ADTS;
+			break;
+		case 0x01:
+			cfg->stream_format = AUDIO_AAC_FORMAT_LOAS;
+			break;
+		case 0x02:
+			cfg->stream_format = AUDIO_AAC_FORMAT_ADIF;
+			break;
+		default:
+		case 0x03:
+			cfg->stream_format = AUDIO_AAC_FORMAT_RAW;
+		}
+		pr_debug("%s:session id %d: Get-aac-cfg: format=%d sr=%d"
+			"bitrate=%d\n", __func__, audio->ac->session,
+			cfg->stream_format, cfg->sample_rate, cfg->bit_rate);
+		break;
+	}
+	case AUDIO_SET_AAC_ENC_CONFIG: {
+		struct msm_audio_aac_enc_config *cfg;
+		struct msm_audio_aac_enc_config *enc_cfg;
+		uint32_t min_bitrate, max_bitrate;
+
+		cfg = (struct msm_audio_aac_enc_config *)arg;
+		if (cfg == NULL) {
+			pr_err("%s: NULL config pointer for %s\n",
+			"AUDIO_SET_AAC_ENC_CONFIG", __func__);
+			rc = -EINVAL;
+			break;
+		}
+		enc_cfg = audio->enc_cfg;
+		pr_debug("%s:session id %d: Set-aac-cfg: stream=%d\n", __func__,
+			audio->ac->session, cfg->stream_format);
+
+		switch (cfg->stream_format) {
+		case AUDIO_AAC_FORMAT_ADTS:
+			enc_cfg->stream_format = 0x00;
+			break;
+		case AUDIO_AAC_FORMAT_LOAS:
+			enc_cfg->stream_format = 0x01;
+			break;
+		case AUDIO_AAC_FORMAT_ADIF:
+			enc_cfg->stream_format = 0x02;
+			break;
+		case AUDIO_AAC_FORMAT_RAW:
+			enc_cfg->stream_format = 0x03;
+			break;
+		default:
+			pr_err("%s:session id %d: unsupported AAC format %d\n",
+				__func__, audio->ac->session,
+				cfg->stream_format);
+			rc = -EINVAL;
+			break;
+		}
+
+		if (cfg->channels == 1) {
+			cfg->channels = CH_MODE_MONO;
+		} else if (cfg->channels == 2) {
+			cfg->channels = CH_MODE_STEREO;
+		} else {
+			rc = -EINVAL;
+			break;
+		}
+
+		min_bitrate = ((cfg->sample_rate)*(cfg->channels))/2;
+		/* This calculation should be based on AAC mode. But we cannot
+		 * get AAC mode in this setconfig. min_bitrate's logical max
+		 * value is 24000. So if min_bitrate is higher than 24000,
+		 * choose 24000.
+		 */
+		if (min_bitrate > 24000)
+			min_bitrate = 24000;
+		max_bitrate = 6*(cfg->sample_rate)*(cfg->channels);
+		if (max_bitrate > 192000)
+			max_bitrate = 192000;
+		if ((cfg->bit_rate < min_bitrate) ||
+			(cfg->bit_rate > max_bitrate)) {
+			pr_err("%s: bitrate permissible: max=%d, min=%d\n",
+				__func__, max_bitrate, min_bitrate);
+			pr_err("%s: ERROR in setting bitrate = %d\n",
+				__func__, cfg->bit_rate);
+			rc = -EINVAL;
+			break;
+		}
+		enc_cfg->sample_rate = cfg->sample_rate;
+		enc_cfg->channels = cfg->channels;
+		enc_cfg->bit_rate = cfg->bit_rate;
+		pr_debug("%s:session id %d: Set-aac-cfg:SR= 0x%x ch=0x%x"
+			"bitrate=0x%x, format(adts/raw) = %d\n",
+			__func__, audio->ac->session, enc_cfg->sample_rate,
+			enc_cfg->channels, enc_cfg->bit_rate,
+			enc_cfg->stream_format);
+		break;
+	}
+	case AUDIO_SET_AAC_CONFIG: {
+		struct msm_audio_aac_config *aac_cfg;
+		struct msm_audio_aac_config *audio_aac_cfg;
+		struct msm_audio_aac_enc_config *enc_cfg;
+		enc_cfg = audio->enc_cfg;
+		audio_aac_cfg = audio->codec_cfg;
+		aac_cfg = (struct msm_audio_aac_config *)arg;
+
+		if (aac_cfg == NULL) {
+			pr_err("%s: NULL config pointer %s\n",
+				__func__, "AUDIO_SET_AAC_CONFIG");
+			rc = -EINVAL;
+			break;
+		}
+		pr_debug("%s:session id %d: AUDIO_SET_AAC_CONFIG: sbr_flag = %d sbr_ps_flag = %d\n",
+			 __func__, audio->ac->session, aac_cfg->sbr_on_flag,
+			 aac_cfg->sbr_ps_on_flag);
+		audio_aac_cfg->sbr_on_flag = aac_cfg->sbr_on_flag;
+		audio_aac_cfg->sbr_ps_on_flag = aac_cfg->sbr_ps_on_flag;
+		if ((audio_aac_cfg->sbr_on_flag == 1) ||
+			 (audio_aac_cfg->sbr_ps_on_flag == 1)) {
+			if (enc_cfg->sample_rate < 24000) {
+				pr_err("%s: ERROR in setting samplerate = %d"
+					"\n", __func__, enc_cfg->sample_rate);
+				rc = -EINVAL;
+				break;
+			}
+		}
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		rc = -EINVAL;
+	}
+	return rc;
+}
+
+static long aac_in_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START:
+	case AUDIO_STOP: {
+		rc = aac_in_ioctl_shared(file, cmd, NULL);
+		break;
+	}
+	case AUDIO_GET_AAC_ENC_CONFIG: {
+		struct msm_audio_aac_enc_config cfg;
+		rc = aac_in_ioctl_shared(file, cmd, &cfg);
+		if (rc) {
+			pr_err("%s:AUDIO_GET_AAC_ENC_CONFIG failed. rc=%d\n",
+				__func__, rc);
+			break;
+		}
+		if (copy_to_user((void *)arg, &cfg, sizeof(cfg))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_AAC_ENC_CONFIG failed\n",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_AAC_ENC_CONFIG: {
+		struct msm_audio_aac_enc_config cfg;
+		if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
+			pr_err("%s: copy_from_user for AUDIO_SET_AAC_ENC_CONFIG failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		rc = aac_in_ioctl_shared(file, cmd, &cfg);
+		if (rc)
+			pr_err("%s:AUDIO_SET_AAC_ENC_CONFIG failed. rc=%d\n",
+				__func__, rc);
+		break;
+	}
+	case AUDIO_GET_AAC_CONFIG: {
+		if (copy_to_user((void *)arg, &audio->codec_cfg,
+				 sizeof(struct msm_audio_aac_config))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_AAC_CONFIG failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		break;
+	}
+	case AUDIO_SET_AAC_CONFIG: {
+		struct msm_audio_aac_config aac_cfg;
+		if (copy_from_user(&aac_cfg, (void *)arg,
+				 sizeof(struct msm_audio_aac_config))) {
+			pr_err("%s: copy_to_user for AUDIO_SET_CONFIG failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		rc = aac_in_ioctl_shared(file, cmd, &aac_cfg);
+		if (rc)
+			pr_err("%s:AUDIO_SET_AAC_CONFIG failed. rc=%d\n",
+				__func__, rc);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd=%d\n", __func__, cmd);
+		rc = -EINVAL;
+	}
+	return rc;
+}
+
+#ifdef CONFIG_COMPAT
+struct msm_audio_aac_enc_config32 {
+	u32 channels;
+	u32 sample_rate;
+	u32 bit_rate;
+	u32 stream_format;
+};
+
+struct msm_audio_aac_config32 {
+	s16 format;
+	u16 audio_object;
+	u16 ep_config;       /* 0 ~ 3 useful only obj = ERLC */
+	u16 aac_section_data_resilience_flag;
+	u16 aac_scalefactor_data_resilience_flag;
+	u16 aac_spectral_data_resilience_flag;
+	u16 sbr_on_flag;
+	u16 sbr_ps_on_flag;
+	u16 dual_mono_mode;
+	u16 channel_configuration;
+	u16 sample_rate;
+};
+
+enum {
+	AUDIO_SET_AAC_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_aac_config32),
+	AUDIO_GET_AAC_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_aac_config32),
+	AUDIO_SET_AAC_ENC_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+3), struct msm_audio_aac_enc_config32),
+	AUDIO_GET_AAC_ENC_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+4), struct msm_audio_aac_enc_config32)
+};
+
+static long aac_in_compat_ioctl(struct file *file, unsigned int cmd,
+				unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START:
+	case AUDIO_STOP: {
+		rc = aac_in_ioctl_shared(file, cmd, NULL);
+		break;
+	}
+	case AUDIO_GET_AAC_ENC_CONFIG_32: {
+		struct msm_audio_aac_enc_config cfg;
+		struct msm_audio_aac_enc_config32 cfg_32;
+
+		cmd = AUDIO_GET_AAC_ENC_CONFIG;
+		rc = aac_in_ioctl_shared(file, cmd, &cfg);
+		if (rc) {
+			pr_err("%s:AUDIO_GET_AAC_ENC_CONFIG_32 failed. Rc= %d\n",
+				__func__, rc);
+			break;
+		}
+		cfg_32.channels = cfg.channels;
+		cfg_32.sample_rate = cfg.sample_rate;
+		cfg_32.bit_rate = cfg.bit_rate;
+		cfg_32.stream_format = cfg.stream_format;
+		if (copy_to_user((void *)arg, &cfg_32, sizeof(cfg_32))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_AAC_ENC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_AAC_ENC_CONFIG_32: {
+		struct msm_audio_aac_enc_config cfg;
+		struct msm_audio_aac_enc_config32 cfg_32;
+		if (copy_from_user(&cfg_32, (void *)arg, sizeof(cfg_32))) {
+			pr_err("%s: copy_from_user for AUDIO_GET_AAC_ENC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		cfg.channels = cfg_32.channels;
+		cfg.sample_rate = cfg_32.sample_rate;
+		cfg.bit_rate = cfg_32.bit_rate;
+		cfg.stream_format = cfg_32.stream_format;
+		/* The command should be converted from 32 bit to normal
+		 * before the shared ioctl is called as shared ioctl
+		 * can process only normal commands */
+		cmd = AUDIO_SET_AAC_ENC_CONFIG;
+		rc = aac_in_ioctl_shared(file, cmd, &cfg);
+		if (rc)
+			pr_err("%s:AUDIO_SET_AAC_ENC_CONFIG_32 failed. rc=%d\n",
+				__func__, rc);
+		break;
+	}
+	case AUDIO_GET_AAC_CONFIG_32: {
+		struct msm_audio_aac_config *aac_config;
+		struct msm_audio_aac_config32 aac_config_32;
+
+		aac_config = (struct msm_audio_aac_config *)audio->codec_cfg;
+		aac_config_32.format = aac_config->format;
+		aac_config_32.audio_object = aac_config->audio_object;
+		aac_config_32.ep_config = aac_config->ep_config;
+		aac_config_32.aac_section_data_resilience_flag =
+			aac_config->aac_section_data_resilience_flag;
+		aac_config_32.aac_scalefactor_data_resilience_flag =
+			aac_config->aac_scalefactor_data_resilience_flag;
+		aac_config_32.aac_spectral_data_resilience_flag =
+			aac_config->aac_spectral_data_resilience_flag;
+		aac_config_32.sbr_on_flag = aac_config->sbr_on_flag;
+		aac_config_32.sbr_ps_on_flag = aac_config->sbr_ps_on_flag;
+		aac_config_32.dual_mono_mode = aac_config->dual_mono_mode;
+		aac_config_32.channel_configuration =
+				aac_config->channel_configuration;
+		aac_config_32.sample_rate = aac_config->sample_rate;
+
+		if (copy_to_user((void *)arg, &aac_config_32,
+				 sizeof(aac_config_32))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_AAC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		break;
+	}
+	case AUDIO_SET_AAC_CONFIG_32: {
+		struct msm_audio_aac_config aac_cfg;
+		struct msm_audio_aac_config32 aac_cfg_32;
+		if (copy_from_user(&aac_cfg_32, (void *)arg,
+					sizeof(aac_cfg_32))) {
+			pr_err("%s: copy_from_user for AUDIO_SET_AAC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		aac_cfg.format = aac_cfg_32.format;
+		aac_cfg.audio_object = aac_cfg_32.audio_object;
+		aac_cfg.ep_config = aac_cfg_32.ep_config;
+		aac_cfg.aac_section_data_resilience_flag =
+			aac_cfg_32.aac_section_data_resilience_flag;
+		aac_cfg.aac_scalefactor_data_resilience_flag =
+			aac_cfg_32.aac_scalefactor_data_resilience_flag;
+		aac_cfg.aac_spectral_data_resilience_flag =
+			aac_cfg_32.aac_spectral_data_resilience_flag;
+		aac_cfg.sbr_on_flag = aac_cfg_32.sbr_on_flag;
+		aac_cfg.sbr_ps_on_flag = aac_cfg_32.sbr_ps_on_flag;
+		aac_cfg.dual_mono_mode = aac_cfg_32.dual_mono_mode;
+		aac_cfg.channel_configuration =
+				aac_cfg_32.channel_configuration;
+		aac_cfg.sample_rate = aac_cfg_32.sample_rate;
+
+		cmd = AUDIO_SET_AAC_CONFIG;
+		rc = aac_in_ioctl_shared(file, cmd, &aac_cfg);
+		if (rc)
+			pr_err("%s:AUDIO_SET_AAC_CONFIG failed. Rc= %d\n",
+				__func__, rc);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d\n", __func__, cmd);
+		rc = -EINVAL;
+	}
+	return rc;
+}
+#else
+#define aac_in_compat_ioctl NULL
+#endif
+
+static int aac_in_open(struct inode *inode, struct file *file)
+{
+	struct q6audio_in *audio = NULL;
+	struct msm_audio_aac_enc_config *enc_cfg;
+	struct msm_audio_aac_config *aac_config;
+	int rc = 0;
+
+	audio = kzalloc(sizeof(struct q6audio_in), GFP_KERNEL);
+
+	if (audio == NULL) {
+		pr_err("%s: Could not allocate memory for aac"
+				"driver\n", __func__);
+		return -ENOMEM;
+	}
+	/* Allocate memory for encoder config param */
+	audio->enc_cfg = kzalloc(sizeof(struct msm_audio_aac_enc_config),
+				GFP_KERNEL);
+	if (audio->enc_cfg == NULL) {
+		pr_err("%s:session id %d: Could not allocate memory for aac"
+				"config param\n", __func__, audio->ac->session);
+		kfree(audio);
+		return -ENOMEM;
+	}
+	enc_cfg = audio->enc_cfg;
+
+	audio->codec_cfg = kzalloc(sizeof(struct msm_audio_aac_config),
+				GFP_KERNEL);
+	if (audio->codec_cfg == NULL) {
+		pr_err("%s:session id %d: Could not allocate memory for aac"
+				"config\n", __func__, audio->ac->session);
+		kfree(audio->enc_cfg);
+		kfree(audio);
+		return -ENOMEM;
+	}
+	aac_config = audio->codec_cfg;
+
+	mutex_init(&audio->lock);
+	mutex_init(&audio->read_lock);
+	mutex_init(&audio->write_lock);
+	spin_lock_init(&audio->dsp_lock);
+	init_waitqueue_head(&audio->read_wait);
+	init_waitqueue_head(&audio->write_wait);
+
+	/* Settings will be re-config at AUDIO_SET_CONFIG,
+	* but at least we need to have initial config
+	*/
+	audio->str_cfg.buffer_size = FRAME_SIZE;
+	audio->str_cfg.buffer_count = FRAME_NUM;
+	audio->min_frame_size = 1536;
+	audio->max_frames_per_buf = 5;
+	enc_cfg->sample_rate = 8000;
+	enc_cfg->channels = 1;
+	enc_cfg->bit_rate = 16000;
+	enc_cfg->stream_format = 0x00;/* 0:ADTS, 3:RAW */
+	audio->buf_cfg.meta_info_enable = 0x01;
+	audio->buf_cfg.frames_per_buf   = 0x01;
+	audio->pcm_cfg.buffer_count = PCM_BUF_COUNT;
+	audio->pcm_cfg.buffer_size  = PCM_BUF_SIZE;
+	aac_config->format = AUDIO_AAC_FORMAT_ADTS;
+	aac_config->audio_object = AUDIO_AAC_OBJECT_LC;
+	aac_config->sbr_on_flag = 0;
+	aac_config->sbr_ps_on_flag = 0;
+	aac_config->channel_configuration = 1;
+
+	audio->ac = q6asm_audio_client_alloc((app_cb)q6asm_in_cb,
+							(void *)audio);
+
+	if (!audio->ac) {
+		pr_err("%s: Could not allocate memory for"
+				"audio client\n", __func__);
+		kfree(audio->enc_cfg);
+		kfree(audio->codec_cfg);
+		kfree(audio);
+		return -ENOMEM;
+	}
+	/* open aac encoder in tunnel mode */
+	audio->buf_cfg.frames_per_buf = 0x01;
+
+	if ((file->f_mode & FMODE_WRITE) &&
+		(file->f_mode & FMODE_READ)) {
+		audio->feedback = NON_TUNNEL_MODE;
+		rc = q6asm_open_read_write(audio->ac, FORMAT_MPEG4_AAC,
+						FORMAT_LINEAR_PCM);
+
+		if (rc < 0) {
+			pr_err("%s:session id %d: NT Open failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		audio->buf_cfg.meta_info_enable = 0x01;
+		pr_info("%s:session id %d: NT mode encoder success\n", __func__,
+				audio->ac->session);
+	} else if (!(file->f_mode & FMODE_WRITE) &&
+				(file->f_mode & FMODE_READ)) {
+		audio->feedback = TUNNEL_MODE;
+		rc = q6asm_open_read(audio->ac, FORMAT_MPEG4_AAC);
+
+		if (rc < 0) {
+			pr_err("%s:session id %d: Tunnel Open failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		/* register for tx overflow (valid for tunnel mode only) */
+		rc = q6asm_reg_tx_overflow(audio->ac, 0x01);
+		if (rc < 0) {
+			pr_err("%s:session id %d: TX Overflow registration"
+				"failed rc=%d\n", __func__,
+				audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		audio->buf_cfg.meta_info_enable = 0x00;
+		pr_info("%s:session id %d: T mode encoder success\n", __func__,
+			audio->ac->session);
+	} else {
+		pr_err("%s:session id %d: Unexpected mode\n", __func__,
+				audio->ac->session);
+		rc = -EACCES;
+		goto fail;
+	}
+	audio->opened = 1;
+	audio->reset_event = false;
+	atomic_set(&audio->in_count, PCM_BUF_COUNT);
+	atomic_set(&audio->out_count, 0x00);
+	audio->enc_compat_ioctl = aac_in_compat_ioctl;
+	audio->enc_ioctl = aac_in_ioctl;
+	file->private_data = audio;
+
+	pr_info("%s:session id %d: success\n", __func__, audio->ac->session);
+	return 0;
+fail:
+	q6asm_audio_client_free(audio->ac);
+	kfree(audio->enc_cfg);
+	kfree(audio->codec_cfg);
+	kfree(audio);
+	return rc;
+}
+
+static const struct file_operations audio_in_fops = {
+	.owner		= THIS_MODULE,
+	.open		= aac_in_open,
+	.release	= audio_in_release,
+	.read		= audio_in_read,
+	.write		= audio_in_write,
+	.unlocked_ioctl	= audio_in_ioctl,
+	.compat_ioctl	= audio_in_compat_ioctl
+};
+
+struct miscdevice audio_aac_in_misc = {
+	.minor	= MISC_DYNAMIC_MINOR,
+	.name	= "msm_aac_in",
+	.fops	= &audio_in_fops,
+};
+
+static int __init aac_in_init(void)
+{
+	return misc_register(&audio_aac_in_misc);
+}
+device_initcall(aac_in_init);