M7350/kernel/arch/arm/mach-msm/qdsp6v2/qcelp_in.c

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2024-09-09 08:52:07 +00:00
/* Copyright (c) 2010-2013, 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_qcp.h>
#include <linux/atomic.h>
#include <asm/ioctls.h>
#include "audio_utils.h"
/* Buffer with meta*/
#define PCM_BUF_SIZE (4096 + sizeof(struct meta_in))
/* Maximum 10 frames in buffer with meta */
#define FRAME_SIZE (1 + ((35+sizeof(struct meta_out_dsp)) * 10))
/* ------------------- device --------------------- */
static long qcelp_in_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct q6audio_in *audio = file->private_data;
int rc = 0;
int cnt = 0;
switch (cmd) {
case AUDIO_START: {
struct msm_audio_qcelp_enc_config *enc_cfg;
enc_cfg = audio->enc_cfg;
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;
}
rc = audio_in_buf_alloc(audio);
if (rc < 0) {
pr_err("%s:session id %d: buffer allocation failed\n",
__func__, audio->ac->session);
break;
}
/* reduced_rate_level, rate_modulation_cmd set to zero
currently not configurable from user space */
rc = q6asm_enc_cfg_blk_qcelp(audio->ac,
audio->buf_cfg.frames_per_buf,
enc_cfg->min_bit_rate,
enc_cfg->max_bit_rate, 0, 0);
if (rc < 0) {
pr_err("%s:session id %d: cmd qcelp 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;
}
}
pr_debug("%s:session id %d: AUDIO_START enable[%d]\n", __func__,
audio->ac->session, audio->enabled);
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); /* Push buffer to DSP */
rc = 0;
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: 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_QCELP_ENC_CONFIG: {
if (copy_to_user((void *)arg, audio->enc_cfg,
sizeof(struct msm_audio_qcelp_enc_config)))
rc = -EFAULT;
break;
}
case AUDIO_SET_QCELP_ENC_CONFIG: {
struct msm_audio_qcelp_enc_config cfg;
struct msm_audio_qcelp_enc_config *enc_cfg;
enc_cfg = audio->enc_cfg;
if (copy_from_user(&cfg, (void *) arg,
sizeof(struct msm_audio_qcelp_enc_config))) {
rc = -EFAULT;
break;
}
if (cfg.min_bit_rate > 4 ||
cfg.min_bit_rate < 1) {
pr_err("%s:session id %d: invalid min bitrate\n",
__func__, audio->ac->session);
rc = -EINVAL;
break;
}
if (cfg.max_bit_rate > 4 ||
cfg.max_bit_rate < 1) {
pr_err("%s:session id %d: invalid max bitrate\n",
__func__, audio->ac->session);
rc = -EINVAL;
break;
}
enc_cfg->min_bit_rate = cfg.min_bit_rate;
enc_cfg->max_bit_rate = cfg.max_bit_rate;
pr_debug("%s:session id %d: min_bit_rate= 0x%x max_bit_rate=0x%x\n",
__func__,
audio->ac->session, enc_cfg->min_bit_rate,
enc_cfg->max_bit_rate);
break;
}
default:
rc = -EINVAL;
}
return rc;
}
static int qcelp_in_open(struct inode *inode, struct file *file)
{
struct q6audio_in *audio = NULL;
struct msm_audio_qcelp_enc_config *enc_cfg;
int rc = 0;
audio = kzalloc(sizeof(struct q6audio_in), GFP_KERNEL);
if (audio == NULL) {
pr_err("%s: Could not allocate memory for qcelp driver\n",
__func__);
return -ENOMEM;
}
/* Allocate memory for encoder config param */
audio->enc_cfg = kzalloc(sizeof(struct msm_audio_qcelp_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;
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 = 35;
audio->max_frames_per_buf = 10;
audio->pcm_cfg.buffer_size = PCM_BUF_SIZE;
audio->pcm_cfg.buffer_count = PCM_BUF_COUNT;
enc_cfg->min_bit_rate = 4;
enc_cfg->max_bit_rate = 4;
audio->pcm_cfg.channel_count = 1;
audio->pcm_cfg.sample_rate = 8000;
audio->buf_cfg.meta_info_enable = 0x01;
audio->buf_cfg.frames_per_buf = 0x01;
audio->event_abort = 0;
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);
return -ENOMEM;
}
/* open qcelp encoder in T/NT mode */
if ((file->f_mode & FMODE_WRITE) &&
(file->f_mode & FMODE_READ)) {
audio->feedback = NON_TUNNEL_MODE;
rc = q6asm_open_read_write(audio->ac, FORMAT_V13K,
FORMAT_LINEAR_PCM);
if (rc < 0) {
pr_err("%s:session id %d: NT mode Open failed rc=%d\n",
__func__, audio->ac->session, rc);
rc = -ENODEV;
goto fail;
}
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_V13K);
if (rc < 0) {
pr_err("%s:session id %d: T mode 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;
}
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;
atomic_set(&audio->in_count, PCM_BUF_COUNT);
atomic_set(&audio->out_count, 0x00);
audio->enc_ioctl = qcelp_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);
return rc;
}
static const struct file_operations audio_in_fops = {
.owner = THIS_MODULE,
.open = qcelp_in_open,
.release = audio_in_release,
.read = audio_in_read,
.write = audio_in_write,
.unlocked_ioctl = audio_in_ioctl,
};
struct miscdevice audio_qcelp_in_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = "msm_qcelp_in",
.fops = &audio_in_fops,
};
static int __init qcelp_in_init(void)
{
return misc_register(&audio_qcelp_in_misc);
}
device_initcall(qcelp_in_init);