278 lines
6.8 KiB
C
278 lines
6.8 KiB
C
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/*
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* Copyright (C) 2009 Google, Inc.
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* Copyright (C) 2009 HTC Corporation
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* Copyright (c) 2010, The Linux Foundation. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/slab.h>
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#include <linux/fs.h>
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#include <linux/module.h>
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#include <linux/miscdevice.h>
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#include <linux/mutex.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/uaccess.h>
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#include <linux/msm_audio.h>
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#include <linux/msm_audio_amrnb.h>
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#include <mach/msm_qdsp6_audio.h>
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#include "dal_audio_format.h"
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#include <mach/debug_mm.h>
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struct amrnb {
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struct mutex lock;
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struct msm_audio_amrnb_enc_config_v2 cfg;
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struct msm_audio_stream_config str_cfg;
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struct audio_client *audio_client;
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struct msm_voicerec_mode voicerec_mode;
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};
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static long q6_amrnb_in_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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struct amrnb *amrnb = file->private_data;
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int rc = 0;
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mutex_lock(&amrnb->lock);
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switch (cmd) {
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case AUDIO_SET_VOLUME:
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pr_debug("[%s:%s] SET_VOLUME\n", __MM_FILE__, __func__);
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break;
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case AUDIO_GET_STATS:
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{
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struct msm_audio_stats stats;
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pr_debug("[%s:%s] GET_STATS\n", __MM_FILE__, __func__);
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memset(&stats, 0, sizeof(stats));
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if (copy_to_user((void *) arg, &stats, sizeof(stats)))
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return -EFAULT;
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return 0;
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}
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case AUDIO_START:
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{
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uint32_t acdb_id;
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pr_debug("[%s:%s] AUDIO_START\n", __MM_FILE__, __func__);
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if (arg == 0) {
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acdb_id = 0;
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} else {
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if (copy_from_user(&acdb_id, (void *) arg,
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sizeof(acdb_id))) {
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rc = -EFAULT;
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break;
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}
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}
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if (amrnb->audio_client) {
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rc = -EBUSY;
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pr_err("[%s:%s] active session already existing\n",
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__MM_FILE__, __func__);
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break;
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} else {
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amrnb->audio_client = q6audio_open_amrnb(
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amrnb->str_cfg.buffer_size,
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amrnb->cfg.band_mode,
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amrnb->cfg.dtx_enable,
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amrnb->voicerec_mode.rec_mode,
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acdb_id);
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if (!amrnb->audio_client) {
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pr_err("[%s:%s] amrnb open session failed\n",
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__MM_FILE__, __func__);
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kfree(amrnb);
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rc = -ENOMEM;
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break;
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}
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}
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break;
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}
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case AUDIO_STOP:
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pr_debug("[%s:%s] AUDIO_STOP\n", __MM_FILE__, __func__);
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break;
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case AUDIO_FLUSH:
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break;
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case AUDIO_SET_INCALL: {
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pr_debug("[%s:%s] SET_INCALL\n", __MM_FILE__, __func__);
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if (copy_from_user(&amrnb->voicerec_mode,
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(void *)arg, sizeof(struct msm_voicerec_mode)))
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rc = -EFAULT;
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if (amrnb->voicerec_mode.rec_mode != AUDIO_FLAG_READ
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&& amrnb->voicerec_mode.rec_mode !=
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AUDIO_FLAG_INCALL_MIXED) {
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amrnb->voicerec_mode.rec_mode = AUDIO_FLAG_READ;
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pr_err("[%s:%s] Invalid rec_mode\n", __MM_FILE__,
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__func__);
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rc = -EINVAL;
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}
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break;
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}
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case AUDIO_GET_STREAM_CONFIG:
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if (copy_to_user((void *)arg, &amrnb->str_cfg,
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sizeof(struct msm_audio_stream_config)))
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rc = -EFAULT;
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pr_debug("[%s:%s] GET_STREAM_CONFIG: buffsz=%d, buffcnt = %d\n",
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__MM_FILE__, __func__, amrnb->str_cfg.buffer_size,
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amrnb->str_cfg.buffer_count);
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break;
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case AUDIO_SET_STREAM_CONFIG:
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if (copy_from_user(&amrnb->str_cfg, (void *)arg,
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sizeof(struct msm_audio_stream_config))) {
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rc = -EFAULT;
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break;
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}
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pr_debug("[%s:%s] SET_STREAM_CONFIG: buffsz=%d, buffcnt = %d\n",
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__MM_FILE__, __func__, amrnb->str_cfg.buffer_size,
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amrnb->str_cfg.buffer_count);
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if (amrnb->str_cfg.buffer_size < 768) {
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pr_err("[%s:%s] Buffer size too small\n", __MM_FILE__,
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__func__);
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rc = -EINVAL;
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break;
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}
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if (amrnb->str_cfg.buffer_count != 2)
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pr_info("[%s:%s] Buffer count set to 2\n", __MM_FILE__,
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__func__);
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break;
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case AUDIO_SET_AMRNB_ENC_CONFIG:
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if (copy_from_user(&amrnb->cfg, (void *) arg,
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sizeof(struct msm_audio_amrnb_enc_config_v2)))
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rc = -EFAULT;
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pr_debug("[%s:%s] SET_AMRNB_ENC_CONFIG\n", __MM_FILE__,
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__func__);
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break;
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case AUDIO_GET_AMRNB_ENC_CONFIG:
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if (copy_to_user((void *) arg, &amrnb->cfg,
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sizeof(struct msm_audio_amrnb_enc_config_v2)))
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rc = -EFAULT;
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pr_debug("[%s:%s] GET_AMRNB_ENC_CONFIG\n", __MM_FILE__,
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__func__);
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break;
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default:
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rc = -EINVAL;
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}
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mutex_unlock(&amrnb->lock);
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pr_debug("[%s:%s] rc= %d\n", __MM_FILE__, __func__, rc);
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return rc;
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}
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static int q6_amrnb_in_open(struct inode *inode, struct file *file)
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{
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struct amrnb *amrnb;
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pr_info("[%s:%s] open\n", __MM_FILE__, __func__);
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amrnb = kmalloc(sizeof(struct amrnb), GFP_KERNEL);
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if (amrnb == NULL) {
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pr_err("[%s:%s] Could not allocate memory for amrnb driver\n",
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__MM_FILE__, __func__);
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return -ENOMEM;
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}
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mutex_init(&amrnb->lock);
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file->private_data = amrnb;
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amrnb->audio_client = NULL;
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amrnb->str_cfg.buffer_size = 768;
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amrnb->str_cfg.buffer_count = 2;
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amrnb->cfg.band_mode = 7;
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amrnb->cfg.dtx_enable = 3;
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amrnb->cfg.frame_format = ADSP_AUDIO_FORMAT_AMRNB_FS;
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amrnb->voicerec_mode.rec_mode = AUDIO_FLAG_READ;
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return 0;
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}
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static ssize_t q6_amrnb_in_read(struct file *file, char __user *buf,
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size_t count, loff_t *pos)
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{
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struct audio_client *ac;
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struct audio_buffer *ab;
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const char __user *start = buf;
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struct amrnb *amrnb = file->private_data;
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int xfer = 0;
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int res;
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pr_debug("[%s:%s] count = %d\n", __MM_FILE__, __func__, count);
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mutex_lock(&amrnb->lock);
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ac = amrnb->audio_client;
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if (!ac) {
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res = -ENODEV;
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goto fail;
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}
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while (count > xfer) {
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ab = ac->buf + ac->cpu_buf;
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if (ab->used)
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wait_event(ac->wait, (ab->used == 0));
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pr_debug("[%s:%s] ab->data = %p, cpu_buf = %d\n", __MM_FILE__,
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__func__, ab->data, ac->cpu_buf);
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xfer = ab->actual_size;
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if (copy_to_user(buf, ab->data, xfer)) {
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pr_err("[%s:%s] copy_to_user failed\n",
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__MM_FILE__, __func__);
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res = -EFAULT;
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goto fail;
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}
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buf += xfer;
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count -= xfer;
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ab->used = 1;
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q6audio_read(ac, ab);
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ac->cpu_buf ^= 1;
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}
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res = buf - start;
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fail:
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mutex_unlock(&amrnb->lock);
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return res;
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}
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static int q6_amrnb_in_release(struct inode *inode, struct file *file)
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{
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int rc = 0;
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struct amrnb *amrnb = file->private_data;
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mutex_lock(&amrnb->lock);
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if (amrnb->audio_client)
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rc = q6audio_close(amrnb->audio_client);
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mutex_unlock(&amrnb->lock);
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kfree(amrnb);
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pr_info("[%s:%s] release\n", __MM_FILE__, __func__);
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return rc;
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}
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static const struct file_operations q6_amrnb_in_fops = {
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.owner = THIS_MODULE,
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.open = q6_amrnb_in_open,
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.read = q6_amrnb_in_read,
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.release = q6_amrnb_in_release,
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.unlocked_ioctl = q6_amrnb_in_ioctl,
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};
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struct miscdevice q6_amrnb_in_misc = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = "msm_amr_in",
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.fops = &q6_amrnb_in_fops,
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};
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static int __init q6_amrnb_in_init(void)
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{
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return misc_register(&q6_amrnb_in_misc);
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}
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device_initcall(q6_amrnb_in_init);
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