M7350/kernel/arch/arm/mach-msm/qdsp6v2/audio_utils.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/atomic.h>
#include <asm/ioctls.h>
#include "audio_utils.h"
static int audio_in_pause(struct q6audio_in *audio)
{
int rc;
rc = q6asm_cmd(audio->ac, CMD_PAUSE);
if (rc < 0)
pr_err("%s:session id %d: pause cmd failed rc=%d\n", __func__,
audio->ac->session, rc);
return rc;
}
static int audio_in_flush(struct q6audio_in *audio)
{
int rc;
pr_debug("%s:session id %d: flush\n", __func__, audio->ac->session);
/* Flush if session running */
if (audio->enabled) {
/* Implicitly issue a pause to the encoder before flushing */
rc = audio_in_pause(audio);
if (rc < 0) {
pr_err("%s:session id %d: pause cmd failed rc=%d\n",
__func__, audio->ac->session, rc);
return rc;
}
rc = q6asm_cmd(audio->ac, CMD_FLUSH);
if (rc < 0) {
pr_err("%s:session id %d: flush cmd failed rc=%d\n",
__func__, audio->ac->session, rc);
return rc;
}
/* 2nd arg: 0 -> run immediately
3rd arg: 0 -> msw_ts, 4th arg: 0 ->lsw_ts */
q6asm_run(audio->ac, 0x00, 0x00, 0x00);
pr_debug("Rerun the session\n");
}
audio->rflush = 1;
audio->wflush = 1;
memset(audio->out_frame_info, 0, sizeof(audio->out_frame_info));
wake_up(&audio->read_wait);
/* get read_lock to ensure no more waiting read thread */
mutex_lock(&audio->read_lock);
audio->rflush = 0;
mutex_unlock(&audio->read_lock);
wake_up(&audio->write_wait);
/* get write_lock to ensure no more waiting write thread */
mutex_lock(&audio->write_lock);
audio->wflush = 0;
mutex_unlock(&audio->write_lock);
pr_debug("%s:session id %d: in_bytes %d\n", __func__,
audio->ac->session, atomic_read(&audio->in_bytes));
pr_debug("%s:session id %d: in_samples %d\n", __func__,
audio->ac->session, atomic_read(&audio->in_samples));
atomic_set(&audio->in_bytes, 0);
atomic_set(&audio->in_samples, 0);
atomic_set(&audio->out_count, 0);
return 0;
}
/* must be called with audio->lock held */
int audio_in_enable(struct q6audio_in *audio)
{
if (audio->enabled)
return 0;
/* 2nd arg: 0 -> run immediately
3rd arg: 0 -> msw_ts, 4th arg: 0 ->lsw_ts */
return q6asm_run(audio->ac, 0x00, 0x00, 0x00);
}
/* must be called with audio->lock held */
int audio_in_disable(struct q6audio_in *audio)
{
int rc = 0;
if (audio->opened) {
audio->enabled = 0;
audio->opened = 0;
pr_debug("%s:session id %d: inbytes[%d] insamples[%d]\n",
__func__, audio->ac->session,
atomic_read(&audio->in_bytes),
atomic_read(&audio->in_samples));
rc = q6asm_cmd(audio->ac, CMD_CLOSE);
if (rc < 0)
pr_err("%s:session id %d: Failed to close the session rc=%d\n",
__func__, audio->ac->session,
rc);
audio->stopped = 1;
memset(audio->out_frame_info, 0,
sizeof(audio->out_frame_info));
wake_up(&audio->read_wait);
wake_up(&audio->write_wait);
}
pr_debug("%s:session id %d: enabled[%d]\n", __func__,
audio->ac->session, audio->enabled);
return rc;
}
int audio_in_buf_alloc(struct q6audio_in *audio)
{
int rc = 0;
switch (audio->buf_alloc) {
case NO_BUF_ALLOC:
if (audio->feedback == NON_TUNNEL_MODE) {
rc = q6asm_audio_client_buf_alloc(IN,
audio->ac,
ALIGN_BUF_SIZE(audio->pcm_cfg.buffer_size),
audio->pcm_cfg.buffer_count);
if (rc < 0) {
pr_err("%s:session id %d: Buffer Alloc failed\n",
__func__,
audio->ac->session);
rc = -ENOMEM;
break;
}
audio->buf_alloc |= BUF_ALLOC_IN;
}
rc = q6asm_audio_client_buf_alloc(OUT, audio->ac,
ALIGN_BUF_SIZE(audio->str_cfg.buffer_size),
audio->str_cfg.buffer_count);
if (rc < 0) {
pr_err("%s:session id %d: Buffer Alloc failed rc=%d\n",
__func__, audio->ac->session, rc);
rc = -ENOMEM;
break;
}
audio->buf_alloc |= BUF_ALLOC_OUT;
break;
case BUF_ALLOC_IN:
rc = q6asm_audio_client_buf_alloc(OUT, audio->ac,
ALIGN_BUF_SIZE(audio->str_cfg.buffer_size),
audio->str_cfg.buffer_count);
if (rc < 0) {
pr_err("%s:session id %d: Buffer Alloc failed rc=%d\n",
__func__, audio->ac->session, rc);
rc = -ENOMEM;
break;
}
audio->buf_alloc |= BUF_ALLOC_OUT;
break;
case BUF_ALLOC_OUT:
if (audio->feedback == NON_TUNNEL_MODE) {
rc = q6asm_audio_client_buf_alloc(IN, audio->ac,
ALIGN_BUF_SIZE(audio->pcm_cfg.buffer_size),
audio->pcm_cfg.buffer_count);
if (rc < 0) {
pr_err("%s:session id %d: Buffer Alloc failed\n",
__func__,
audio->ac->session);
rc = -ENOMEM;
break;
}
audio->buf_alloc |= BUF_ALLOC_IN;
}
break;
default:
pr_debug("%s:session id %d: buf[%d]\n", __func__,
audio->ac->session, audio->buf_alloc);
}
return rc;
}
/* ------------------- device --------------------- */
long audio_in_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct q6audio_in *audio = file->private_data;
int rc = 0;
if (cmd == AUDIO_GET_STATS) {
struct msm_audio_stats stats;
stats.byte_count = atomic_read(&audio->in_bytes);
stats.sample_count = atomic_read(&audio->in_samples);
if (copy_to_user((void *) arg, &stats, sizeof(stats)))
return -EFAULT;
return rc;
}
mutex_lock(&audio->lock);
switch (cmd) {
case AUDIO_FLUSH: {
/* Make sure we're stopped and we wake any threads
* that might be blocked holding the read_lock.
* While audio->stopped read threads will always
* exit immediately.
*/
rc = audio_in_flush(audio);
if (rc < 0)
pr_err("%s:session id %d: Flush Fail rc=%d\n",
__func__, audio->ac->session, rc);
else { /* Register back the flushed read buffer with DSP */
int cnt = 0;
while (cnt++ < audio->str_cfg.buffer_count)
q6asm_read(audio->ac); /* Push buffer to DSP */
pr_debug("register the read buffer\n");
}
break;
}
case AUDIO_PAUSE: {
pr_debug("%s:session id %d: AUDIO_PAUSE\n", __func__,
audio->ac->session);
if (audio->enabled)
audio_in_pause(audio);
break;
}
case AUDIO_GET_STREAM_CONFIG: {
struct msm_audio_stream_config cfg;
memset(&cfg, 0, sizeof(cfg));
cfg.buffer_size = audio->str_cfg.buffer_size;
cfg.buffer_count = audio->str_cfg.buffer_count;
if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
pr_debug("%s:session id %d: AUDIO_GET_STREAM_CONFIG %d %d\n",
__func__, audio->ac->session, cfg.buffer_size,
cfg.buffer_count);
break;
}
case AUDIO_SET_STREAM_CONFIG: {
struct msm_audio_stream_config cfg;
if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
/* Minimum single frame size,
but with in maximum frames number */
if ((cfg.buffer_size < (audio->min_frame_size+ \
sizeof(struct meta_out_dsp))) ||
(cfg.buffer_count < FRAME_NUM)) {
rc = -EINVAL;
break;
}
audio->str_cfg.buffer_size = cfg.buffer_size;
audio->str_cfg.buffer_count = cfg.buffer_count;
rc = q6asm_audio_client_buf_alloc(OUT, audio->ac,
ALIGN_BUF_SIZE(audio->str_cfg.buffer_size),
audio->str_cfg.buffer_count);
if (rc < 0) {
pr_err("%s: session id %d: Buffer Alloc failed rc=%d\n",
__func__, audio->ac->session, rc);
rc = -ENOMEM;
break;
}
audio->buf_alloc |= BUF_ALLOC_OUT;
rc = 0;
pr_debug("%s:session id %d: AUDIO_SET_STREAM_CONFIG %d %d\n",
__func__, audio->ac->session,
audio->str_cfg.buffer_size,
audio->str_cfg.buffer_count);
break;
}
case AUDIO_GET_SESSION_ID: {
if (copy_to_user((void *) arg, &audio->ac->session,
sizeof(unsigned short))) {
rc = -EFAULT;
}
break;
}
case AUDIO_SET_BUF_CFG: {
struct msm_audio_buf_cfg cfg;
if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
if ((audio->feedback == NON_TUNNEL_MODE) &&
!cfg.meta_info_enable) {
rc = -EFAULT;
break;
}
/* Restrict the num of frames per buf to coincide with
* default buf size */
if (cfg.frames_per_buf > audio->max_frames_per_buf) {
rc = -EFAULT;
break;
}
audio->buf_cfg.meta_info_enable = cfg.meta_info_enable;
audio->buf_cfg.frames_per_buf = cfg.frames_per_buf;
pr_debug("%s:session id %d: Set-buf-cfg: meta[%d] framesperbuf[%d]\n",
__func__,
audio->ac->session, cfg.meta_info_enable,
cfg.frames_per_buf);
break;
}
case AUDIO_GET_BUF_CFG: {
pr_debug("%s:session id %d: Get-buf-cfg: meta[%d] framesperbuf[%d]\n",
__func__,
audio->ac->session, audio->buf_cfg.meta_info_enable,
audio->buf_cfg.frames_per_buf);
if (copy_to_user((void *)arg, &audio->buf_cfg,
sizeof(struct msm_audio_buf_cfg)))
rc = -EFAULT;
break;
}
case AUDIO_GET_CONFIG: {
if (copy_to_user((void *)arg, &audio->pcm_cfg,
sizeof(struct msm_audio_config)))
rc = -EFAULT;
break;
}
case AUDIO_SET_CONFIG: {
struct msm_audio_config cfg;
if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
if (audio->feedback != NON_TUNNEL_MODE) {
pr_err("%s:session id %d: Not sufficient permission to change the record mode\n",
__func__,
audio->ac->session);
rc = -EACCES;
break;
}
if ((cfg.buffer_count > PCM_BUF_COUNT) ||
(cfg.buffer_count == 1))
cfg.buffer_count = PCM_BUF_COUNT;
audio->pcm_cfg.buffer_count = cfg.buffer_count;
audio->pcm_cfg.buffer_size = cfg.buffer_size;
audio->pcm_cfg.channel_count = cfg.channel_count;
audio->pcm_cfg.sample_rate = cfg.sample_rate;
rc = q6asm_audio_client_buf_alloc(IN, audio->ac,
ALIGN_BUF_SIZE(audio->pcm_cfg.buffer_size),
audio->pcm_cfg.buffer_count);
if (rc < 0) {
pr_err("%s:session id %d: Buffer Alloc failed\n",
__func__, audio->ac->session);
rc = -ENOMEM;
break;
}
audio->buf_alloc |= BUF_ALLOC_IN;
rc = 0;
pr_debug("%s:session id %d: AUDIO_SET_CONFIG %d %d\n", __func__,
audio->ac->session, audio->pcm_cfg.buffer_count,
audio->pcm_cfg.buffer_size);
break;
}
default:
/* call codec specific ioctl */
rc = audio->enc_ioctl(file, cmd, arg);
}
mutex_unlock(&audio->lock);
return rc;
}
ssize_t audio_in_read(struct file *file,
char __user *buf,
size_t count, loff_t *pos)
{
struct q6audio_in *audio = file->private_data;
const char __user *start = buf;
unsigned char *data;
uint32_t offset = 0;
uint32_t size = 0;
int rc = 0;
uint32_t idx;
struct meta_out_dsp meta;
uint32_t bytes_to_copy = 0;
uint32_t mfield_size = (audio->buf_cfg.meta_info_enable == 0) ? 0 :
(sizeof(unsigned char) +
(sizeof(struct meta_out_dsp)*(audio->buf_cfg.frames_per_buf)));
memset(&meta, 0, sizeof(meta));
pr_debug("%s:session id %d: read - %d\n", __func__, audio->ac->session,
count);
if (!audio->enabled)
return -EFAULT;
mutex_lock(&audio->read_lock);
while (count > 0) {
rc = wait_event_interruptible(
audio->read_wait,
((atomic_read(&audio->out_count) > 0) ||
(audio->stopped) ||
audio->rflush || audio->eos_rsp ||
audio->event_abort));
if (audio->event_abort) {
rc = -EIO;
break;
}
if (rc < 0)
break;
if ((audio->stopped && !(atomic_read(&audio->out_count))) ||
audio->rflush) {
pr_debug("%s:session id %d: driver in stop state or flush,No more buf to read",
__func__,
audio->ac->session);
rc = 0;/* End of File */
break;
}
if (!(atomic_read(&audio->out_count)) &&
(audio->eos_rsp == 1) &&
(count >= (sizeof(unsigned char) +
sizeof(struct meta_out_dsp)))) {
unsigned char num_of_frames;
pr_info("%s:session id %d: eos %d at output\n",
__func__, audio->ac->session, audio->eos_rsp);
if (buf != start)
break;
num_of_frames = 0xFF;
if (copy_to_user(buf, &num_of_frames,
sizeof(unsigned char))) {
rc = -EFAULT;
break;
}
buf += sizeof(unsigned char);
meta.frame_size = 0xFFFF;
meta.encoded_pcm_samples = 0xFFFF;
meta.msw_ts = 0x00;
meta.lsw_ts = 0x00;
meta.nflags = AUD_EOS_SET;
audio->eos_rsp = 0;
if (copy_to_user(buf, &meta, sizeof(meta))) {
rc = -EFAULT;
break;
}
buf += sizeof(meta);
break;
}
data = (unsigned char *)q6asm_is_cpu_buf_avail(OUT, audio->ac,
&size, &idx);
if ((count >= (size + mfield_size)) && data) {
if (audio->buf_cfg.meta_info_enable) {
if (copy_to_user(buf,
&audio->out_frame_info[idx][0],
sizeof(unsigned char))) {
rc = -EFAULT;
break;
}
bytes_to_copy =
(size + audio->out_frame_info[idx][1]);
/* Number of frames information copied */
buf += sizeof(unsigned char);
count -= sizeof(unsigned char);
} else {
offset = audio->out_frame_info[idx][1];
bytes_to_copy = size;
}
pr_debug("%s:session id %d: offset=%d nr of frames= %d\n",
__func__, audio->ac->session,
audio->out_frame_info[idx][1],
audio->out_frame_info[idx][0]);
if (copy_to_user(buf, &data[offset], bytes_to_copy)) {
rc = -EFAULT;
break;
}
count -= bytes_to_copy;
buf += bytes_to_copy;
} else {
pr_err("%s:session id %d: short read data[%p] bytesavail[%d]bytesrequest[%d]\n",
__func__,
audio->ac->session,
data, size, count);
}
atomic_dec(&audio->out_count);
q6asm_read(audio->ac);
break;
}
mutex_unlock(&audio->read_lock);
pr_debug("%s:session id %d: read: %d bytes\n", __func__,
audio->ac->session, (buf-start));
if (buf > start)
return buf - start;
return rc;
}
static int extract_meta_info(char *buf, unsigned long *msw_ts,
unsigned long *lsw_ts, unsigned int *flags)
{
struct meta_in *meta = (struct meta_in *)buf;
*msw_ts = meta->ntimestamp.highpart;
*lsw_ts = meta->ntimestamp.lowpart;
*flags = meta->nflags;
return 0;
}
ssize_t audio_in_write(struct file *file,
const char __user *buf,
size_t count, loff_t *pos)
{
struct q6audio_in *audio = file->private_data;
const char __user *start = buf;
size_t xfer = 0;
char *cpy_ptr;
int rc = 0;
unsigned char *data;
uint32_t size = 0;
uint32_t idx = 0;
uint32_t nflags = 0;
unsigned long msw_ts = 0;
unsigned long lsw_ts = 0;
uint32_t mfield_size = (audio->buf_cfg.meta_info_enable == 0) ? 0 :
sizeof(struct meta_in);
pr_debug("%s:session id %d: to write[%d]\n", __func__,
audio->ac->session, count);
if (!audio->enabled)
return -EFAULT;
mutex_lock(&audio->write_lock);
while (count > 0) {
rc = wait_event_interruptible(audio->write_wait,
((atomic_read(&audio->in_count) > 0) ||
(audio->stopped) ||
(audio->wflush) || (audio->event_abort)));
if (audio->event_abort) {
rc = -EIO;
break;
}
if (rc < 0)
break;
if (audio->stopped || audio->wflush) {
pr_debug("%s: session id %d: stop or flush\n", __func__,
audio->ac->session);
rc = -EBUSY;
break;
}
/* if no PCM data, might have only eos buffer
such case do not hold cpu buffer */
if ((buf == start) && (count == mfield_size)) {
char eos_buf[sizeof(struct meta_in)];
/* Processing begining of user buffer */
if (copy_from_user(eos_buf, buf, mfield_size)) {
rc = -EFAULT;
break;
}
/* Check if EOS flag is set and buffer has
* contains just meta field
*/
extract_meta_info(eos_buf, &msw_ts, &lsw_ts,
&nflags);
buf += mfield_size;
/* send the EOS and return */
pr_debug("%s:session id %d: send EOS 0x%8x\n",
__func__,
audio->ac->session, nflags);
break;
}
data = (unsigned char *)q6asm_is_cpu_buf_avail(IN, audio->ac,
&size, &idx);
if (!data) {
pr_debug("%s:session id %d: No buf available\n",
__func__, audio->ac->session);
continue;
}
cpy_ptr = data;
if (audio->buf_cfg.meta_info_enable) {
if (buf == start) {
/* Processing beginning of user buffer */
if (copy_from_user(cpy_ptr, buf, mfield_size)) {
rc = -EFAULT;
break;
}
/* Check if EOS flag is set and buffer has
* contains just meta field
*/
extract_meta_info(cpy_ptr, &msw_ts, &lsw_ts,
&nflags);
buf += mfield_size;
count -= mfield_size;
} else {
pr_debug("%s:session id %d: continuous buffer\n",
__func__, audio->ac->session);
}
}
xfer = (count > (audio->pcm_cfg.buffer_size)) ?
(audio->pcm_cfg.buffer_size) : count;
if (copy_from_user(cpy_ptr, buf, xfer)) {
rc = -EFAULT;
break;
}
rc = q6asm_write(audio->ac, xfer, msw_ts, lsw_ts, 0x00);
if (rc < 0) {
rc = -EFAULT;
break;
}
atomic_dec(&audio->in_count);
count -= xfer;
buf += xfer;
}
mutex_unlock(&audio->write_lock);
pr_debug("%s:session id %d: eos_condition 0x%8x buf[0x%x] start[0x%x]\n",
__func__, audio->ac->session,
nflags, (int) buf, (int) start);
if (nflags & AUD_EOS_SET) {
rc = q6asm_cmd(audio->ac, CMD_EOS);
pr_info("%s:session id %d: eos %d at input\n", __func__,
audio->ac->session, audio->eos_rsp);
}
pr_debug("%s:session id %d: Written %d Avail Buf[%d]", __func__,
audio->ac->session, (buf - start - mfield_size),
atomic_read(&audio->in_count));
if (!rc) {
if (buf > start)
return buf - start;
}
return rc;
}
int audio_in_release(struct inode *inode, struct file *file)
{
struct q6audio_in *audio = file->private_data;
pr_info("%s: session id %d\n", __func__, audio->ac->session);
mutex_lock(&audio->lock);
audio_in_disable(audio);
q6asm_audio_client_free(audio->ac);
mutex_unlock(&audio->lock);
kfree(audio->enc_cfg);
kfree(audio->codec_cfg);
kfree(audio);
return 0;
}