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

 /* aac audio output device
  *
  * Copyright (C) 2008 Google, Inc.
  * Copyright (C) 2008 HTC Corporation
  * Copyright (c) 2010-2018, The Linux Foundation. All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
  * may be copied, distributed, and modified under those terms.
  *
  * 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/msm_audio_aac.h>
 #include <linux/compat.h>
 #include "audio_utils_aio.h"

 #define AUDIO_AAC_DUAL_MONO_INVALID -1
 #define PCM_BUFSZ_MIN_AAC	((8*1024) + sizeof(struct dec_meta_out))

 static struct miscdevice audio_aac_misc;
 static struct ws_mgr audio_aac_ws_mgr;

 #ifdef CONFIG_DEBUG_FS
 static const struct file_operations audio_aac_debug_fops = {
 	.read = audio_aio_debug_read,
 	.open = audio_aio_debug_open,
 };
 #endif

 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_aac_cfg aac_cfg;
 		struct msm_audio_aac_config *aac_config;
 		uint32_t sbr_ps = 0x00;

 		pr_debug("%s: AUDIO_START session_id[%d]\n", __func__,
 							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;
 			}
 		}
 		/* turn on both sbr and ps */
 		rc = q6asm_enable_sbrps(audio->ac, sbr_ps);
 		if (rc < 0)
 			pr_err("sbr-ps enable failed\n");
 		aac_config = (struct msm_audio_aac_config *)audio->codec_cfg;
 		if (aac_config->sbr_ps_on_flag)
 			aac_cfg.aot = AAC_ENC_MODE_EAAC_P;
 		else if (aac_config->sbr_on_flag)
 			aac_cfg.aot = AAC_ENC_MODE_AAC_P;
 		else
 			aac_cfg.aot = AAC_ENC_MODE_AAC_LC;

 		switch (aac_config->format) {
 		case AUDIO_AAC_FORMAT_ADTS:
 			aac_cfg.format = 0x00;
 			break;
 		case AUDIO_AAC_FORMAT_LOAS:
 			aac_cfg.format = 0x01;
 			break;
 		case AUDIO_AAC_FORMAT_ADIF:
 			aac_cfg.format = 0x02;
 			break;
 		default:
 		case AUDIO_AAC_FORMAT_RAW:
 			aac_cfg.format = 0x03;
 		}
 		aac_cfg.ep_config = aac_config->ep_config;
 		aac_cfg.section_data_resilience =
 			aac_config->aac_section_data_resilience_flag;
 		aac_cfg.scalefactor_data_resilience =
 			aac_config->aac_scalefactor_data_resilience_flag;
 		aac_cfg.spectral_data_resilience =
 			aac_config->aac_spectral_data_resilience_flag;
 		aac_cfg.ch_cfg = audio->pcm_cfg.channel_count;
 		if (audio->feedback == TUNNEL_MODE) {
 			aac_cfg.sample_rate = aac_config->sample_rate;
 			aac_cfg.ch_cfg = aac_config->channel_configuration;
 		} else {
 			aac_cfg.sample_rate =  audio->pcm_cfg.sample_rate;
 			aac_cfg.ch_cfg = audio->pcm_cfg.channel_count;
 		}

 		pr_debug("%s:format=%x aot=%d  ch=%d sr=%d\n",
 			__func__, aac_cfg.format,
 			aac_cfg.aot, aac_cfg.ch_cfg,
 			aac_cfg.sample_rate);

 		/* Configure Media format block */
 		rc = q6asm_media_format_block_aac(audio->ac, &aac_cfg);
 		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) {
 			rc = enable_volume_ramp(audio);
 			if (rc < 0) {
 				pr_err("%s: Failed to enable volume ramp\n",
 					__func__);
 			}
 			audio->enabled = 1;
 		} else {
 			audio->enabled = 0;
 			pr_err("Audio Start procedure failed rc=%d\n", rc);
 			break;
 		}
 		pr_info("%s: AUDIO_START sessionid[%d]enable[%d]\n", __func__,
 						audio->ac->session,
 						audio->enabled);
 		if (audio->stopped == 1)
 			audio->stopped = 0;
 		break;
 	}
 	case AUDIO_SET_AAC_CONFIG: {
 		struct msm_audio_aac_config *aac_config;
 		uint16_t sce_left = 1, sce_right = 2;

 		pr_debug("%s: AUDIO_SET_AAC_CONFIG\n", __func__);
 		aac_config = (struct msm_audio_aac_config *)arg;
 		if (aac_config == NULL) {
 			pr_err("%s: Invalid config pointer\n", __func__);
 			rc = -EINVAL;
 			break;
 		}
 		memcpy(audio->codec_cfg, aac_config,
 				sizeof(struct msm_audio_aac_config));
 		/* PL_PR is 0 only need to check PL_SR */
 		if (aac_config->dual_mono_mode >
 		    AUDIO_AAC_DUAL_MONO_PL_SR) {
 			pr_err("%s:Invalid dual_mono mode =%d\n", __func__,
 			aac_config->dual_mono_mode);
 		} else {
 			/* convert the data from user into sce_left
 			 * and sce_right based on the definitions
 			 */
 			pr_debug("%s: modify dual_mono mode =%d\n", __func__,
 				 aac_config->dual_mono_mode);
 			switch (aac_config->dual_mono_mode) {
 			case AUDIO_AAC_DUAL_MONO_PL_PR:
 				sce_left = 1;
 				sce_right = 1;
 				break;
 			case AUDIO_AAC_DUAL_MONO_SL_SR:
 				sce_left = 2;
 				sce_right = 2;
 				break;
 			case AUDIO_AAC_DUAL_MONO_SL_PR:
 				sce_left = 2;
 				sce_right = 1;
 				break;
 			case AUDIO_AAC_DUAL_MONO_PL_SR:
 			default:
 				sce_left = 1;
 				sce_right = 2;
 				break;
 			}
 			rc = q6asm_cfg_dual_mono_aac(audio->ac,
 						sce_left, sce_right);
 			if (rc < 0)
 				pr_err("%s:asm cmd dualmono failed rc=%d\n",
 					 __func__, rc);
 		}
 		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_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_config;

 		pr_debug("%s: AUDIO_SET_AAC_CONFIG\n", __func__);
 		if (copy_from_user(&aac_config, (void *)arg,
 			sizeof(aac_config))) {
 			pr_err("%s: copy_from_user for AUDIO_SET_AAC_CONFIG failed\n",
 				__func__);
 			rc = -EFAULT;
 			break;
 		}
 		rc = audio_ioctl_shared(file, cmd, &aac_config);
 		if (rc)
 			pr_err("%s:AUDIO_SET_AAC_CONFIG failed. Rc= %d\n",
 						__func__, rc);
 		break;
 	}
 	default: {
 		pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
 		rc = audio->codec_ioctl(file, cmd, arg);
 		if (rc)
 			pr_err_ratelimited("%s[%pK]:Failed in utils_ioctl: %d\n",
 				__func__, audio, rc);
 	}
 	}
 	return rc;
 }

 #ifdef CONFIG_COMPAT
 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)
 };

 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_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_config;
 		struct msm_audio_aac_config32 aac_config_32;

 		pr_debug("%s: AUDIO_SET_AAC_CONFIG\n", __func__);
 		if (copy_from_user(&aac_config_32, (void *)arg,
 			sizeof(aac_config_32))) {
 			pr_err("%s: copy_from_user for AUDIO_SET_AAC_CONFIG_32 failed\n",
 				__func__);
 			rc = -EFAULT;
 			break;
 		}
 		aac_config.format = aac_config_32.format;
 		aac_config.audio_object = aac_config_32.audio_object;
 		aac_config.ep_config = aac_config_32.ep_config;
 		aac_config.aac_section_data_resilience_flag =
 			aac_config_32.aac_section_data_resilience_flag;
 		aac_config.aac_scalefactor_data_resilience_flag =
 			aac_config_32.aac_scalefactor_data_resilience_flag;
 		aac_config.aac_spectral_data_resilience_flag =
 			aac_config_32.aac_spectral_data_resilience_flag;
 		aac_config.sbr_on_flag = aac_config_32.sbr_on_flag;
 		aac_config.sbr_ps_on_flag = aac_config_32.sbr_ps_on_flag;
 		aac_config.dual_mono_mode = aac_config_32.dual_mono_mode;
 		aac_config.channel_configuration =
 				aac_config_32.channel_configuration;
 		aac_config.sample_rate = aac_config_32.sample_rate;

 		cmd = AUDIO_SET_AAC_CONFIG;
 		rc = audio_ioctl_shared(file, cmd, &aac_config);
 		if (rc)
 			pr_err("%s:AUDIO_SET_AAC_CONFIG failed. Rc= %d\n",
 				__func__, rc);
 		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("%s[%pK]:Failed in utils_ioctl: %d\n",
 				__func__, audio, rc);
 	}
 	}
 	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;
 	struct msm_audio_aac_config *aac_config = NULL;

 #ifdef CONFIG_DEBUG_FS
 	/* 4 bytes represents decoder number, 1 byte for terminate string */
 	char name[sizeof "msm_aac_" + 5];
 #endif
 	audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);

 	if (audio == NULL)
 		return -ENOMEM;

 	audio->codec_cfg = kzalloc(sizeof(struct msm_audio_aac_config),
 					GFP_KERNEL);
 	if (audio->codec_cfg == NULL) {
 		kfree(audio);
 		return -ENOMEM;
 	}
 	aac_config = audio->codec_cfg;

 	/* Settings will be re-config at AUDIO_SET_CONFIG,
 	 * but at least we need to have initial config
 	 */
 	audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN_AAC;
 	audio->miscdevice = &audio_aac_misc;
 	audio->wakelock_voted = false;
 	audio->audio_ws_mgr = &audio_aac_ws_mgr;
 	aac_config->dual_mono_mode = AUDIO_AAC_DUAL_MONO_INVALID;

 	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_MPEG4_AAC);
 		if (rc < 0) {
 			pr_err("NT mode Open failed rc=%d\n", rc);
 			rc = -ENODEV;
 			goto fail;
 		}
 		audio->feedback = NON_TUNNEL_MODE;
 		/* open AAC 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_MPEG4_AAC);
 		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;
 	}

 #ifdef CONFIG_DEBUG_FS
 	snprintf(name, sizeof(name), "msm_aac_%04x", audio->ac->session);
 	audio->dentry = debugfs_create_file(name, S_IFREG | 0444,
 					    NULL, (void *)audio,
 					    &audio_aac_debug_fops);

 	if (IS_ERR(audio->dentry))
 		pr_debug("debugfs_create_file failed\n");
 #endif
 	pr_info("%s:aacdec 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_aac_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_aac_misc = {
 	.minor = MISC_DYNAMIC_MINOR,
 	.name = "msm_aac",
 	.fops = &audio_aac_fops,
 };

 int __init audio_aac_init(void)
 {
 	int ret = misc_register(&audio_aac_misc);

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

 	return ret;
 }

 void audio_aac_exit(void)
 {
 	mutex_destroy(&audio_aac_ws_mgr.ws_lock);
 	misc_deregister(&audio_aac_misc);
 }
	/* aac audio output device
	*
	* Copyright (C) 2008 Google, Inc.
	* Copyright (C) 2008 HTC Corporation
	* Copyright (c) 2010-2018, The Linux Foundation. All rights reserved.
	*
	* This software is licensed under the terms of the GNU General Public
	* License version 2, as published by the Free Software Foundation, and
	* may be copied, distributed, and modified under those terms.
	*
	* 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/msm_audio_aac.h>
	#include <linux/compat.h>
	#include "audio_utils_aio.h"

	#define AUDIO_AAC_DUAL_MONO_INVALID -1
	#define PCM_BUFSZ_MIN_AAC ((8*1024) + sizeof(struct dec_meta_out))

	static struct miscdevice audio_aac_misc;
	static struct ws_mgr audio_aac_ws_mgr;

	#ifdef CONFIG_DEBUG_FS
	static const struct file_operations audio_aac_debug_fops = {
	.read = audio_aio_debug_read,
	.open = audio_aio_debug_open,
	};
	#endif

	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_aac_cfg aac_cfg;
	struct msm_audio_aac_config *aac_config;
	uint32_t sbr_ps = 0x00;

	pr_debug("%s: AUDIO_START session_id[%d]\n", __func__,
	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;
	}
	}
	/* turn on both sbr and ps */
	rc = q6asm_enable_sbrps(audio->ac, sbr_ps);
	if (rc < 0)
	pr_err("sbr-ps enable failed\n");
	aac_config = (struct msm_audio_aac_config *)audio->codec_cfg;
	if (aac_config->sbr_ps_on_flag)
	aac_cfg.aot = AAC_ENC_MODE_EAAC_P;
	else if (aac_config->sbr_on_flag)
	aac_cfg.aot = AAC_ENC_MODE_AAC_P;
	else
	aac_cfg.aot = AAC_ENC_MODE_AAC_LC;

	switch (aac_config->format) {
	case AUDIO_AAC_FORMAT_ADTS:
	aac_cfg.format = 0x00;
	break;
	case AUDIO_AAC_FORMAT_LOAS:
	aac_cfg.format = 0x01;
	break;
	case AUDIO_AAC_FORMAT_ADIF:
	aac_cfg.format = 0x02;
	break;
	default:
	case AUDIO_AAC_FORMAT_RAW:
	aac_cfg.format = 0x03;
	}
	aac_cfg.ep_config = aac_config->ep_config;
	aac_cfg.section_data_resilience =
	aac_config->aac_section_data_resilience_flag;
	aac_cfg.scalefactor_data_resilience =
	aac_config->aac_scalefactor_data_resilience_flag;
	aac_cfg.spectral_data_resilience =
	aac_config->aac_spectral_data_resilience_flag;
	aac_cfg.ch_cfg = audio->pcm_cfg.channel_count;
	if (audio->feedback == TUNNEL_MODE) {
	aac_cfg.sample_rate = aac_config->sample_rate;
	aac_cfg.ch_cfg = aac_config->channel_configuration;
	} else {
	aac_cfg.sample_rate = audio->pcm_cfg.sample_rate;
	aac_cfg.ch_cfg = audio->pcm_cfg.channel_count;
	}

	pr_debug("%s:format=%x aot=%d ch=%d sr=%d\n",
	__func__, aac_cfg.format,
	aac_cfg.aot, aac_cfg.ch_cfg,
	aac_cfg.sample_rate);

	/* Configure Media format block */
	rc = q6asm_media_format_block_aac(audio->ac, &aac_cfg);
	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) {
	rc = enable_volume_ramp(audio);
	if (rc < 0) {
	pr_err("%s: Failed to enable volume ramp\n",
	__func__);
	}
	audio->enabled = 1;
	} else {
	audio->enabled = 0;
	pr_err("Audio Start procedure failed rc=%d\n", rc);
	break;
	}
	pr_info("%s: AUDIO_START sessionid[%d]enable[%d]\n", __func__,
	audio->ac->session,
	audio->enabled);
	if (audio->stopped == 1)
	audio->stopped = 0;
	break;
	}
	case AUDIO_SET_AAC_CONFIG: {
	struct msm_audio_aac_config *aac_config;
	uint16_t sce_left = 1, sce_right = 2;

	pr_debug("%s: AUDIO_SET_AAC_CONFIG\n", __func__);
	aac_config = (struct msm_audio_aac_config *)arg;
	if (aac_config == NULL) {
	pr_err("%s: Invalid config pointer\n", __func__);
	rc = -EINVAL;
	break;
	}
	memcpy(audio->codec_cfg, aac_config,
	sizeof(struct msm_audio_aac_config));
	/* PL_PR is 0 only need to check PL_SR */
	if (aac_config->dual_mono_mode >
	AUDIO_AAC_DUAL_MONO_PL_SR) {
	pr_err("%s:Invalid dual_mono mode =%d\n", __func__,
	aac_config->dual_mono_mode);
	} else {
	/* convert the data from user into sce_left
	* and sce_right based on the definitions
	*/
	pr_debug("%s: modify dual_mono mode =%d\n", __func__,
	aac_config->dual_mono_mode);
	switch (aac_config->dual_mono_mode) {
	case AUDIO_AAC_DUAL_MONO_PL_PR:
	sce_left = 1;
	sce_right = 1;
	break;
	case AUDIO_AAC_DUAL_MONO_SL_SR:
	sce_left = 2;
	sce_right = 2;
	break;
	case AUDIO_AAC_DUAL_MONO_SL_PR:
	sce_left = 2;
	sce_right = 1;
	break;
	case AUDIO_AAC_DUAL_MONO_PL_SR:
	default:
	sce_left = 1;
	sce_right = 2;
	break;
	}
	rc = q6asm_cfg_dual_mono_aac(audio->ac,
	sce_left, sce_right);
	if (rc < 0)
	pr_err("%s:asm cmd dualmono failed rc=%d\n",
	__func__, rc);
	}
	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_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_config;

	pr_debug("%s: AUDIO_SET_AAC_CONFIG\n", __func__);
	if (copy_from_user(&aac_config, (void *)arg,
	sizeof(aac_config))) {
	pr_err("%s: copy_from_user for AUDIO_SET_AAC_CONFIG failed\n",
	__func__);
	rc = -EFAULT;
	break;
	}
	rc = audio_ioctl_shared(file, cmd, &aac_config);
	if (rc)
	pr_err("%s:AUDIO_SET_AAC_CONFIG failed. Rc= %d\n",
	__func__, rc);
	break;
	}
	default: {
	pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
	rc = audio->codec_ioctl(file, cmd, arg);
	if (rc)
	pr_err_ratelimited("%s[%pK]:Failed in utils_ioctl: %d\n",
	__func__, audio, rc);
	}
	}
	return rc;
	}

	#ifdef CONFIG_COMPAT
	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)
	};

	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_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_config;
	struct msm_audio_aac_config32 aac_config_32;

	pr_debug("%s: AUDIO_SET_AAC_CONFIG\n", __func__);
	if (copy_from_user(&aac_config_32, (void *)arg,
	sizeof(aac_config_32))) {
	pr_err("%s: copy_from_user for AUDIO_SET_AAC_CONFIG_32 failed\n",
	__func__);
	rc = -EFAULT;
	break;
	}
	aac_config.format = aac_config_32.format;
	aac_config.audio_object = aac_config_32.audio_object;
	aac_config.ep_config = aac_config_32.ep_config;
	aac_config.aac_section_data_resilience_flag =
	aac_config_32.aac_section_data_resilience_flag;
	aac_config.aac_scalefactor_data_resilience_flag =
	aac_config_32.aac_scalefactor_data_resilience_flag;
	aac_config.aac_spectral_data_resilience_flag =
	aac_config_32.aac_spectral_data_resilience_flag;
	aac_config.sbr_on_flag = aac_config_32.sbr_on_flag;
	aac_config.sbr_ps_on_flag = aac_config_32.sbr_ps_on_flag;
	aac_config.dual_mono_mode = aac_config_32.dual_mono_mode;
	aac_config.channel_configuration =
	aac_config_32.channel_configuration;
	aac_config.sample_rate = aac_config_32.sample_rate;

	cmd = AUDIO_SET_AAC_CONFIG;
	rc = audio_ioctl_shared(file, cmd, &aac_config);
	if (rc)
	pr_err("%s:AUDIO_SET_AAC_CONFIG failed. Rc= %d\n",
	__func__, rc);
	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("%s[%pK]:Failed in utils_ioctl: %d\n",
	__func__, audio, rc);
	}
	}
	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;
	struct msm_audio_aac_config *aac_config = NULL;

	#ifdef CONFIG_DEBUG_FS
	/* 4 bytes represents decoder number, 1 byte for terminate string */
	char name[sizeof "msm_aac_" + 5];
	#endif
	audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);

	if (audio == NULL)
	return -ENOMEM;

	audio->codec_cfg = kzalloc(sizeof(struct msm_audio_aac_config),
	GFP_KERNEL);
	if (audio->codec_cfg == NULL) {
	kfree(audio);
	return -ENOMEM;
	}
	aac_config = audio->codec_cfg;

	/* Settings will be re-config at AUDIO_SET_CONFIG,
	* but at least we need to have initial config
	*/
	audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN_AAC;
	audio->miscdevice = &audio_aac_misc;
	audio->wakelock_voted = false;
	audio->audio_ws_mgr = &audio_aac_ws_mgr;
	aac_config->dual_mono_mode = AUDIO_AAC_DUAL_MONO_INVALID;

	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_MPEG4_AAC);
	if (rc < 0) {
	pr_err("NT mode Open failed rc=%d\n", rc);
	rc = -ENODEV;
	goto fail;
	}
	audio->feedback = NON_TUNNEL_MODE;
	/* open AAC 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_MPEG4_AAC);
	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;
	}

	#ifdef CONFIG_DEBUG_FS
	snprintf(name, sizeof(name), "msm_aac_%04x", audio->ac->session);
	audio->dentry = debugfs_create_file(name, S_IFREG \| 0444,
	NULL, (void *)audio,
	&audio_aac_debug_fops);

	if (IS_ERR(audio->dentry))
	pr_debug("debugfs_create_file failed\n");
	#endif
	pr_info("%s:aacdec 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_aac_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_aac_misc = {
	.minor = MISC_DYNAMIC_MINOR,
	.name = "msm_aac",
	.fops = &audio_aac_fops,
	};

	int __init audio_aac_init(void)
	{
	int ret = misc_register(&audio_aac_misc);

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

	return ret;
	}

	void audio_aac_exit(void)
	{
	mutex_destroy(&audio_aac_ws_mgr.ws_lock);
	misc_deregister(&audio_aac_misc);
	}