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M7350/kernel/arch/arm/mach-msm/qdsp5v2/audio_aac_in.c
T f9cc65cfda M7350v1_en_gpl
2024-09-09 08:52:07 +00:00

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/*
* aac audio input device
*
* Copyright (C) 2008 Google, Inc.
* Copyright (C) 2008 HTC Corporation
* Copyright (c) 2009-2012, 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 <asm/atomic.h>
#include <asm/ioctls.h>
#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/msm_audio_aac.h>
#include <linux/memory_alloc.h>
#include <mach/msm_memtypes.h>
#include <mach/msm_adsp.h>
#include <mach/iommu.h>
#include <mach/iommu_domains.h>
#include <mach/qdsp5v2/qdsp5audreccmdi.h>
#include <mach/qdsp5v2/qdsp5audrecmsg.h>
#include <mach/qdsp5v2/audpreproc.h>
#include <mach/qdsp5v2/audio_dev_ctl.h>
#include <mach/debug_mm.h>
#include <mach/socinfo.h>
/* FRAME_NUM must be a power of two */
#define FRAME_NUM (8)
#define FRAME_SIZE (772 * 2) /* 1536 bytes data */
#define NT_FRAME_SIZE (780 * 2) /* 1536 bytes data + 24 meta field*/
#define AAC_FRAME_SIZE 1536
#define DMASZ (FRAME_SIZE * FRAME_NUM)
#define OUT_FRAME_NUM (2)
#define META_OUT_SIZE (24)
#define META_IN_SIZE (14)
#define OUT_BUFFER_SIZE (32 * 1024 + META_OUT_SIZE)
#define BUFFER_SIZE (OUT_BUFFER_SIZE * OUT_FRAME_NUM)
#define AUDPREPROC_AAC_EOS_FLG_OFFSET 0x0A /* Offset from beginning of buffer */
#define AUDPREPROC_AAC_EOS_FLG_MASK 0x01
#define AUDPREPROC_AAC_EOS_NONE 0x0 /* No EOS detected */
#define AUDPREPROC_AAC_EOS_SET 0x1 /* EOS set in meta field */
#define PCM_CONFIG_UPDATE_FLAG_ENABLE -1
#define PCM_CONFIG_UPDATE_FLAG_DISABLE 0
#define ENABLE_FLAG_VALUE -1
#define DISABLE_FLAG_VALUE 0
struct buffer {
void *data;
uint32_t size;
uint32_t read;
uint32_t addr;
uint32_t used;
uint32_t mfield_sz;
};
struct audio_in {
struct buffer in[FRAME_NUM];
spinlock_t dsp_lock;
atomic_t in_bytes;
atomic_t in_samples;
struct mutex lock;
struct mutex read_lock;
wait_queue_head_t wait;
wait_queue_head_t wait_enable;
/*write section*/
struct buffer out[OUT_FRAME_NUM];
uint8_t out_head;
uint8_t out_tail;
uint8_t out_needed; /* number of buffers the dsp is waiting for */
uint32_t out_count;
struct mutex write_lock;
wait_queue_head_t write_wait;
int32_t out_phys; /* physical address of write buffer */
char *out_data;
void *map_v_read;
void *map_v_write;
int mfield; /* meta field embedded in data */
int wflush; /*write flush */
int rflush; /*read flush*/
int out_frame_cnt;
struct msm_adsp_module *audrec;
/* configuration to use on next enable */
uint32_t buffer_size; /* Frame size (36 bytes) */
uint32_t samp_rate;
uint32_t channel_mode;
uint32_t bit_rate; /* bit rate for AAC */
uint32_t record_quality; /* record quality (bits/sample/channel) */
uint32_t enc_type;
uint32_t dsp_cnt;
uint32_t in_head; /* next buffer dsp will write */
uint32_t in_tail; /* next buffer read() will read */
uint32_t in_count; /* number of buffers available to read() */
uint32_t mode;
uint32_t eos_ack;
uint32_t flush_ack;
const char *module_name;
unsigned queue_ids;
uint16_t enc_id;
struct audrec_session_info session_info; /*audrec session info*/
uint16_t source; /* Encoding source bit mask */
uint32_t device_events; /* device events interested in */
uint32_t dev_cnt;
spinlock_t dev_lock;
/* data allocated for various buffers */
char *data;
dma_addr_t phys;
int opened;
int enabled;
int running;
int stopped; /* set when stopped, cleared on flush */
int abort; /* set when error, like sample rate mismatch */
char *build_id;
};
struct audio_frame {
uint16_t frame_count_lsw;
uint16_t frame_count_msw;
uint16_t frame_length;
uint16_t erased_pcm;
unsigned char raw_bitstream[]; /* samples */
} __attribute__((packed));
struct audio_frame_nt {
uint16_t metadata_len;
uint16_t frame_count_lsw;
uint16_t frame_count_msw;
uint16_t frame_length;
uint16_t erased_pcm;
uint16_t reserved;
uint16_t time_stamp_dword_lsw;
uint16_t time_stamp_dword_msw;
uint16_t time_stamp_lsw;
uint16_t time_stamp_msw;
uint16_t nflag_lsw;
uint16_t nflag_msw;
unsigned char raw_bitstream[]; /* samples */
} __attribute__((packed));
struct aac_encoded_meta_in {
uint16_t metadata_len;
uint16_t time_stamp_dword_lsw;
uint16_t time_stamp_dword_msw;
uint16_t time_stamp_lsw;
uint16_t time_stamp_msw;
uint16_t nflag_lsw;
uint16_t nflag_msw;
};
/* Audrec Queue command sent macro's */
#define audrec_send_bitstreamqueue(audio, cmd, len) \
msm_adsp_write(audio->audrec, ((audio->queue_ids & 0xFFFF0000) >> 16),\
cmd, len)
#define audrec_send_audrecqueue(audio, cmd, len) \
msm_adsp_write(audio->audrec, (audio->queue_ids & 0x0000FFFF),\
cmd, len)
/* DSP command send functions */
static int audaac_in_enc_config(struct audio_in *audio, int enable);
static int audaac_in_param_config(struct audio_in *audio);
static int audaac_in_mem_config(struct audio_in *audio);
static int audaac_in_record_config(struct audio_in *audio, int enable);
static int audaac_dsp_read_buffer(struct audio_in *audio, uint32_t read_cnt);
static void audaac_in_get_dsp_frames(struct audio_in *audio);
static int audpcm_config(struct audio_in *audio);
static void audaac_out_flush(struct audio_in *audio);
static int audpreproc_cmd_cfg_routing_mode(struct audio_in *audio);
static void audpreproc_pcm_send_data(struct audio_in *audio, unsigned needed);
static void audaac_nt_in_get_dsp_frames(struct audio_in *audio);
static void audaac_in_flush(struct audio_in *audio);
static void aac_in_listener(u32 evt_id, union auddev_evt_data *evt_payload,
void *private_data)
{
struct audio_in *audio = (struct audio_in *) private_data;
unsigned long flags;
MM_DBG("evt_id = 0x%8x\n", evt_id);
switch (evt_id) {
case AUDDEV_EVT_DEV_RDY: {
MM_DBG("AUDDEV_EVT_DEV_RDY\n");
spin_lock_irqsave(&audio->dev_lock, flags);
audio->dev_cnt++;
audio->source |= (0x1 << evt_payload->routing_id);
spin_unlock_irqrestore(&audio->dev_lock, flags);
if ((audio->running == 1) && (audio->enabled == 1) &&
(audio->mode == MSM_AUD_ENC_MODE_TUNNEL))
audaac_in_record_config(audio, 1);
break;
}
case AUDDEV_EVT_DEV_RLS: {
MM_DBG("AUDDEV_EVT_DEV_RLS\n");
spin_lock_irqsave(&audio->dev_lock, flags);
audio->dev_cnt--;
audio->source &= ~(0x1 << evt_payload->routing_id);
spin_unlock_irqrestore(&audio->dev_lock, flags);
if ((!audio->running) || (!audio->enabled))
break;
if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) {
/* Turn of as per source */
if (audio->source)
audaac_in_record_config(audio, 1);
else
/* Turn off all */
audaac_in_record_config(audio, 0);
}
break;
}
case AUDDEV_EVT_FREQ_CHG: {
MM_DBG("Encoder Driver got sample rate change event\n");
MM_DBG("sample rate %d\n", evt_payload->freq_info.sample_rate);
MM_DBG("dev_type %d\n", evt_payload->freq_info.dev_type);
MM_DBG("acdb_dev_id %d\n", evt_payload->freq_info.acdb_dev_id);
if ((audio->running == 1) && (audio->enabled == 1)) {
/* Stop Recording sample rate does not match
with device sample rate */
if (evt_payload->freq_info.sample_rate !=
audio->samp_rate) {
if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL)
audaac_in_record_config(audio, 0);
audio->abort = 1;
wake_up(&audio->wait);
}
}
break;
}
default:
MM_ERR("wrong event %d\n", evt_id);
break;
}
}
/* Convert Bit Rate to Record Quality field of DSP */
static unsigned int bitrate_to_record_quality(unsigned int sample_rate,
unsigned int channel, unsigned int bit_rate) {
unsigned int temp;
temp = sample_rate * channel;
MM_DBG(" sample rate * channel = %d \n", temp);
/* To represent in Q12 fixed format */
temp = (bit_rate * 4096) / temp;
MM_DBG(" Record Quality = 0x%8x \n", temp);
return temp;
}
/* ------------------- dsp preproc event handler--------------------- */
static void audpreproc_dsp_event(void *data, unsigned id, void *msg)
{
struct audio_in *audio = data;
switch (id) {
case AUDPREPROC_ERROR_MSG: {
struct audpreproc_err_msg *err_msg = msg;
MM_ERR("ERROR_MSG: stream id %d err idx %d\n",
err_msg->stream_id, err_msg->aud_preproc_err_idx);
/* Error case */
wake_up(&audio->wait_enable);
break;
}
case AUDPREPROC_CMD_CFG_DONE_MSG: {
MM_DBG("CMD_CFG_DONE_MSG \n");
break;
}
case AUDPREPROC_CMD_ENC_CFG_DONE_MSG: {
struct audpreproc_cmd_enc_cfg_done_msg *enc_cfg_msg = msg;
MM_DBG("CMD_ENC_CFG_DONE_MSG: stream id %d enc type \
0x%8x\n", enc_cfg_msg->stream_id,
enc_cfg_msg->rec_enc_type);
/* Encoder enable success */
if (enc_cfg_msg->rec_enc_type & ENCODE_ENABLE) {
if(audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) {
MM_DBG("routing command\n");
audpreproc_cmd_cfg_routing_mode(audio);
} else {
audaac_in_param_config(audio);
}
} else { /* Encoder disable success */
audio->running = 0;
if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL)
audaac_in_record_config(audio, 0);
else
wake_up(&audio->wait_enable);
}
break;
}
case AUDPREPROC_CMD_ENC_PARAM_CFG_DONE_MSG: {
MM_DBG("CMD_ENC_PARAM_CFG_DONE_MSG\n");
if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL)
audaac_in_mem_config(audio);
else
audpcm_config(audio);
break;
}
case AUDPREPROC_CMD_ROUTING_MODE_DONE_MSG: {
struct audpreproc_cmd_routing_mode_done\
*routing_cfg_done_msg = msg;
if (routing_cfg_done_msg->configuration == 0) {
MM_INFO("routing configuration failed\n");
audio->running = 0;
} else
audaac_in_param_config(audio);
break;
}
case AUDPREPROC_AFE_CMD_AUDIO_RECORD_CFG_DONE_MSG: {
MM_DBG("AFE_CMD_AUDIO_RECORD_CFG_DONE_MSG\n");
wake_up(&audio->wait_enable);
break;
}
default:
MM_ERR("Unknown Event id %d\n", id);
}
}
/* ------------------- dsp audrec event handler--------------------- */
static void audrec_dsp_event(void *data, unsigned id, size_t len,
void (*getevent)(void *ptr, size_t len))
{
struct audio_in *audio = data;
switch (id) {
case AUDREC_CMD_MEM_CFG_DONE_MSG: {
MM_DBG("CMD_MEM_CFG_DONE MSG DONE\n");
audio->running = 1;
if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) {
if (audio->dev_cnt > 0)
audaac_in_record_config(audio, 1);
} else {
audpreproc_pcm_send_data(audio, 1);
wake_up(&audio->wait_enable);
}
break;
}
case AUDREC_FATAL_ERR_MSG: {
struct audrec_fatal_err_msg fatal_err_msg;
getevent(&fatal_err_msg, AUDREC_FATAL_ERR_MSG_LEN);
MM_ERR("FATAL_ERR_MSG: err id %d\n",
fatal_err_msg.audrec_err_id);
/* Error stop the encoder */
audio->stopped = 1;
wake_up(&audio->wait);
if (audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL)
wake_up(&audio->write_wait);
break;
}
case AUDREC_UP_PACKET_READY_MSG: {
struct audrec_up_pkt_ready_msg pkt_ready_msg;
getevent(&pkt_ready_msg, AUDREC_UP_PACKET_READY_MSG_LEN);
MM_DBG("UP_PACKET_READY_MSG: write cnt lsw %d \
write cnt msw %d read cnt lsw %d read cnt msw %d \n",\
pkt_ready_msg.audrec_packet_write_cnt_lsw, \
pkt_ready_msg.audrec_packet_write_cnt_msw, \
pkt_ready_msg.audrec_up_prev_read_cnt_lsw, \
pkt_ready_msg.audrec_up_prev_read_cnt_msw);
audaac_in_get_dsp_frames(audio);
break;
}
case AUDREC_CMD_PCM_BUFFER_PTR_UPDATE_ARM_TO_ENC_MSG: {
MM_DBG("ptr_update recieved from DSP\n");
audpreproc_pcm_send_data(audio, 1);
break;
}
case AUDREC_CMD_PCM_CFG_ARM_TO_ENC_DONE_MSG: {
MM_ERR("AUDREC_CMD_PCM_CFG_ARM_TO_ENC_DONE_MSG");
audaac_in_mem_config(audio);
break;
}
case AUDREC_UP_NT_PACKET_READY_MSG: {
struct audrec_up_nt_packet_ready_msg pkt_ready_msg;
getevent(&pkt_ready_msg, AUDREC_UP_NT_PACKET_READY_MSG_LEN);
MM_DBG("UP_NT_PACKET_READY_MSG: write cnt lsw %d \
write cnt msw %d read cnt lsw %d read cnt msw %d \n",\
pkt_ready_msg.audrec_packetwrite_cnt_lsw, \
pkt_ready_msg.audrec_packetwrite_cnt_msw, \
pkt_ready_msg.audrec_upprev_readcount_lsw, \
pkt_ready_msg.audrec_upprev_readcount_msw);
audaac_nt_in_get_dsp_frames(audio);
break;
}
case AUDREC_CMD_EOS_ACK_MSG: {
MM_DBG("eos ack recieved\n");
break;
}
case AUDREC_CMD_FLUSH_DONE_MSG: {
audio->wflush = 0;
audio->rflush = 0;
audio->flush_ack = 1;
wake_up(&audio->write_wait);
MM_DBG("flush ack recieved\n");
break;
}
case ADSP_MESSAGE_ID: {
MM_DBG("Received ADSP event:module audrectask\n");
break;
}
default:
MM_ERR("Unknown Event id %d\n", id);
}
}
static void audaac_in_get_dsp_frames(struct audio_in *audio)
{
struct audio_frame *frame;
uint32_t index;
unsigned long flags;
MM_DBG("head = %d\n", audio->in_head);
index = audio->in_head;
frame = (void *) (((char *)audio->in[index].data) - \
sizeof(*frame));
spin_lock_irqsave(&audio->dsp_lock, flags);
audio->in[index].size = frame->frame_length;
/* statistics of read */
atomic_add(audio->in[index].size, &audio->in_bytes);
atomic_add(1, &audio->in_samples);
audio->in_head = (audio->in_head + 1) & (FRAME_NUM - 1);
/* If overflow, move the tail index foward. */
if (audio->in_head == audio->in_tail) {
MM_ERR("Error! not able to keep up the read\n");
audio->in_tail = (audio->in_tail + 1) & (FRAME_NUM - 1);
} else
audio->in_count++;
audaac_dsp_read_buffer(audio, audio->dsp_cnt++);
spin_unlock_irqrestore(&audio->dsp_lock, flags);
wake_up(&audio->wait);
}
static void audaac_nt_in_get_dsp_frames(struct audio_in *audio)
{
struct audio_frame_nt *nt_frame;
uint32_t index;
unsigned long flags;
MM_DBG("head = %d\n", audio->in_head);
index = audio->in_head;
nt_frame = (void *) (((char *)audio->in[index].data) - \
sizeof(struct audio_frame_nt));
spin_lock_irqsave(&audio->dsp_lock, flags);
audio->in[index].size = nt_frame->frame_length;
/* statistics of read */
atomic_add(audio->in[index].size, &audio->in_bytes);
atomic_add(1, &audio->in_samples);
audio->in_head = (audio->in_head + 1) & (FRAME_NUM - 1);
/* If overflow, move the tail index foward. */
if (audio->in_head == audio->in_tail)
MM_DBG("Error! not able to keep up the read\n");
else
audio->in_count++;
spin_unlock_irqrestore(&audio->dsp_lock, flags);
wake_up(&audio->wait);
}
struct msm_adsp_ops audrec_aac_adsp_ops = {
.event = audrec_dsp_event,
};
static int audpreproc_pcm_buffer_ptr_refresh(struct audio_in *audio,
unsigned idx, unsigned len)
{
struct audrec_cmd_pcm_buffer_ptr_refresh_arm_enc cmd;
if (len == META_OUT_SIZE)
len = len / 2;
else
len = (len + META_OUT_SIZE) / 2;
MM_DBG("len = %d\n", len);
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = AUDREC_CMD_PCM_BUFFER_PTR_REFRESH_ARM_TO_ENC;
cmd.num_buffers = 1;
if (cmd.num_buffers == 1) {
cmd.buf_address_length[0] = (audio->out[idx].addr &
0xffff0000) >> 16;
cmd.buf_address_length[1] = (audio->out[idx].addr &
0x0000ffff);
cmd.buf_address_length[2] = (len & 0xffff0000) >> 16;
cmd.buf_address_length[3] = (len & 0x0000ffff);
}
audio->out_frame_cnt++;
return audrec_send_audrecqueue(audio, (void *)&cmd,
(unsigned int)sizeof(cmd));
}
static int audpcm_config(struct audio_in *audio)
{
struct audrec_cmd_pcm_cfg_arm_to_enc cmd;
MM_DBG("\n");
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = AUDREC_CMD_PCM_CFG_ARM_TO_ENC;
cmd.config_update_flag = PCM_CONFIG_UPDATE_FLAG_ENABLE;
cmd.enable_flag = ENABLE_FLAG_VALUE;
cmd.sampling_freq = audio->samp_rate;
if (!audio->channel_mode)
cmd.channels = 1;
else
cmd.channels = 2;
cmd.frequency_of_intimation = 1;
cmd.max_number_of_buffers = OUT_FRAME_NUM;
return audrec_send_audrecqueue(audio, (void *)&cmd,
(unsigned int)sizeof(cmd));
}
static int audpreproc_cmd_cfg_routing_mode(struct audio_in *audio)
{
struct audpreproc_audrec_cmd_routing_mode cmd;
MM_DBG("\n");
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = AUDPREPROC_AUDREC_CMD_ROUTING_MODE;
cmd.stream_id = audio->enc_id;
if (audio->mode == MSM_ADSP_ENC_MODE_NON_TUNNEL)
cmd.routing_mode = 1;
return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd));
}
static int audaac_in_enc_config(struct audio_in *audio, int enable)
{
struct audpreproc_audrec_cmd_enc_cfg cmd;
memset(&cmd, 0, sizeof(cmd));
if (audio->build_id[17] == '1') {
cmd.cmd_id = AUDPREPROC_AUDREC_CMD_ENC_CFG_2;
MM_ERR("sending AUDPREPROC_AUDREC_CMD_ENC_CFG_2 command");
} else {
cmd.cmd_id = AUDPREPROC_AUDREC_CMD_ENC_CFG;
MM_ERR("sending AUDPREPROC_AUDREC_CMD_ENC_CFG command");
}
cmd.stream_id = audio->enc_id;
if (enable)
cmd.audrec_enc_type = audio->enc_type | ENCODE_ENABLE;
else
cmd.audrec_enc_type &= ~(ENCODE_ENABLE);
return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd));
}
static int audaac_in_param_config(struct audio_in *audio)
{
struct audpreproc_audrec_cmd_parm_cfg_aac cmd;
MM_DBG("\n");
memset(&cmd, 0, sizeof(cmd));
cmd.common.cmd_id = AUDPREPROC_AUDREC_CMD_PARAM_CFG;
cmd.common.stream_id = audio->enc_id;
cmd.aud_rec_samplerate_idx = audio->samp_rate;
cmd.aud_rec_stereo_mode = audio->channel_mode;
cmd.recording_quality = audio->record_quality;
return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd));
}
/* To Do: msm_snddev_route_enc(audio->enc_id); */
static int audaac_in_record_config(struct audio_in *audio, int enable)
{
struct audpreproc_afe_cmd_audio_record_cfg cmd;
MM_DBG("\n");
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = AUDPREPROC_AFE_CMD_AUDIO_RECORD_CFG;
cmd.stream_id = audio->enc_id;
if (enable)
cmd.destination_activity = AUDIO_RECORDING_TURN_ON;
else
cmd.destination_activity = AUDIO_RECORDING_TURN_OFF;
cmd.source_mix_mask = audio->source;
if (audio->enc_id == 2) {
if ((cmd.source_mix_mask & INTERNAL_CODEC_TX_SOURCE_MIX_MASK) ||
(cmd.source_mix_mask & AUX_CODEC_TX_SOURCE_MIX_MASK) ||
(cmd.source_mix_mask & VOICE_UL_SOURCE_MIX_MASK) ||
(cmd.source_mix_mask & VOICE_DL_SOURCE_MIX_MASK)) {
cmd.pipe_id = SOURCE_PIPE_1;
}
if (cmd.source_mix_mask &
AUDPP_A2DP_PIPE_SOURCE_MIX_MASK)
cmd.pipe_id |= SOURCE_PIPE_0;
}
return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd));
}
static int audaac_in_mem_config(struct audio_in *audio)
{
struct audrec_cmd_arecmem_cfg cmd;
uint16_t *data = (void *) audio->data;
int n;
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = AUDREC_CMD_MEM_CFG_CMD;
cmd.audrec_up_pkt_intm_count = 1;
cmd.audrec_ext_pkt_start_addr_msw = audio->phys >> 16;
cmd.audrec_ext_pkt_start_addr_lsw = audio->phys;
cmd.audrec_ext_pkt_buf_number = FRAME_NUM;
MM_DBG("audio->phys = %x\n", audio->phys);
/* prepare buffer pointers:
* 1536 bytes aac packet + 4 halfword header
*/
for (n = 0; n < FRAME_NUM; n++) {
if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) {
audio->in[n].data = data + 4;
data += (FRAME_SIZE/2);
MM_DBG("0x%8x\n", (int)(audio->in[n].data - 8));
} else {
audio->in[n].data = data + 12;
data += ((AAC_FRAME_SIZE) / 2) + 12;
MM_DBG("0x%8x\n", (int)(audio->in[n].data - 24));
}
}
return audrec_send_audrecqueue(audio, &cmd, sizeof(cmd));
}
static int audaac_dsp_read_buffer(struct audio_in *audio, uint32_t read_cnt)
{
struct up_audrec_packet_ext_ptr cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = UP_AUDREC_PACKET_EXT_PTR;
cmd.audrec_up_curr_read_count_msw = read_cnt >> 16;
cmd.audrec_up_curr_read_count_lsw = read_cnt;
return audrec_send_bitstreamqueue(audio, &cmd, sizeof(cmd));
}
static int audaac_flush_command(struct audio_in *audio)
{
struct audrec_cmd_flush cmd;
MM_DBG("\n");
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = AUDREC_CMD_FLUSH;
return audrec_send_audrecqueue(audio, &cmd, sizeof(cmd));
}
/* must be called with audio->lock held */
static int audaac_in_enable(struct audio_in *audio)
{
if (audio->enabled)
return 0;
if (audpreproc_enable(audio->enc_id, &audpreproc_dsp_event, audio)) {
MM_ERR("msm_adsp_enable(audpreproc) failed\n");
return -ENODEV;
}
if (msm_adsp_enable(audio->audrec)) {
MM_ERR("msm_adsp_enable(audrec) failed\n");
audpreproc_disable(audio->enc_id, audio);
return -ENODEV;
}
audio->enabled = 1;
audaac_in_enc_config(audio, 1);
return 0;
}
/* must be called with audio->lock held */
static int audaac_in_disable(struct audio_in *audio)
{
if (audio->enabled) {
audio->enabled = 0;
audaac_in_enc_config(audio, 0);
wake_up(&audio->wait);
wait_event_interruptible_timeout(audio->wait_enable,
audio->running == 0, 1*HZ);
msm_adsp_disable(audio->audrec);
audpreproc_disable(audio->enc_id, audio);
}
return 0;
}
static void audaac_ioport_reset(struct audio_in *audio)
{
/* Make sure read/write thread are free from
* sleep and knowing that system is not able
* to process io request at the moment
*/
wake_up(&audio->write_wait);
mutex_lock(&audio->write_lock);
audaac_in_flush(audio);
mutex_unlock(&audio->write_lock);
wake_up(&audio->wait);
mutex_lock(&audio->read_lock);
audaac_out_flush(audio);
mutex_unlock(&audio->read_lock);
}
static void audaac_in_flush(struct audio_in *audio)
{
int i;
audio->dsp_cnt = 0;
audio->in_head = 0;
audio->in_tail = 0;
audio->in_count = 0;
audio->eos_ack = 0;
for (i = 0; i < FRAME_NUM; i++) {
audio->in[i].size = 0;
audio->in[i].read = 0;
}
MM_DBG("in_bytes %d\n", atomic_read(&audio->in_bytes));
MM_DBG("in_samples %d\n", atomic_read(&audio->in_samples));
atomic_set(&audio->in_bytes, 0);
atomic_set(&audio->in_samples, 0);
}
static void audaac_out_flush(struct audio_in *audio)
{
int i;
audio->out_head = 0;
audio->out_tail = 0;
audio->out_count = 0;
for (i = 0; i < OUT_FRAME_NUM; i++) {
audio->out[i].size = 0;
audio->out[i].read = 0;
audio->out[i].used = 0;
}
}
/* ------------------- device --------------------- */
static long audaac_in_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct audio_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_START: {
uint32_t freq;
/* Poll at 48KHz always */
freq = 48000;
MM_DBG("AUDIO_START\n");
rc = msm_snddev_request_freq(&freq, audio->enc_id,
SNDDEV_CAP_TX, AUDDEV_CLNT_ENC);
MM_DBG("sample rate configured %d sample rate requested %d\n",
freq, audio->samp_rate);
if (rc < 0) {
MM_DBG(" Sample rate can not be set, return code %d\n",
rc);
msm_snddev_withdraw_freq(audio->enc_id,
SNDDEV_CAP_TX, AUDDEV_CLNT_ENC);
MM_DBG("msm_snddev_withdraw_freq\n");
break;
}
/*update aurec session info in audpreproc layer*/
audio->session_info.session_id = audio->enc_id;
audio->session_info.sampling_freq = audio->samp_rate;
audpreproc_update_audrec_info(&audio->session_info);
rc = audaac_in_enable(audio);
if (!rc) {
rc =
wait_event_interruptible_timeout(audio->wait_enable,
audio->running != 0, 1*HZ);
MM_DBG("state %d rc = %d\n", audio->running, rc);
if (audio->running == 0)
rc = -ENODEV;
else
rc = 0;
}
audio->stopped = 0;
break;
}
case AUDIO_STOP: {
audio->session_info.sampling_freq = 0;
audpreproc_update_audrec_info(&audio->session_info);
rc = audaac_in_disable(audio);
rc = msm_snddev_withdraw_freq(audio->enc_id,
SNDDEV_CAP_TX, AUDDEV_CLNT_ENC);
MM_DBG("msm_snddev_withdraw_freq\n");
audio->stopped = 1;
audio->abort = 0;
break;
}
case AUDIO_FLUSH:
MM_DBG("AUDIO_FLUSH\n");
audio->rflush = 1;
audio->wflush = 1;
audaac_ioport_reset(audio);
if (audio->running) {
audaac_flush_command(audio);
rc = wait_event_interruptible(audio->write_wait,
!audio->wflush);
if (rc < 0) {
MM_ERR("AUDIO_FLUSH interrupted\n");
rc = -EINTR;
}
} else {
audio->rflush = 0;
audio->wflush = 0;
}
break;
case AUDIO_GET_STREAM_CONFIG: {
struct msm_audio_stream_config cfg;
memset(&cfg, 0, sizeof(cfg));
cfg.buffer_size = audio->buffer_size;
cfg.buffer_count = FRAME_NUM;
if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
break;
}
case AUDIO_SET_STREAM_CONFIG: {
struct msm_audio_stream_config cfg;
if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
/* Allow only single frame */
if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) {
if (cfg.buffer_size != (FRAME_SIZE - 8)) {
rc = -EINVAL;
break;
}
} else {
if (cfg.buffer_size != (NT_FRAME_SIZE - 24)) {
rc = -EINVAL;
break;
}
}
audio->buffer_size = cfg.buffer_size;
break;
}
case AUDIO_GET_CONFIG: {
struct msm_audio_pcm_config cfg;
memset(&cfg, 0, sizeof(cfg));
cfg.buffer_size = OUT_BUFFER_SIZE;
cfg.buffer_count = OUT_FRAME_NUM;
if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
break;
}
case AUDIO_GET_AAC_ENC_CONFIG: {
struct msm_audio_aac_enc_config cfg;
if (audio->channel_mode == AUDREC_CMD_MODE_MONO)
cfg.channels = 1;
else
cfg.channels = 2;
cfg.sample_rate = audio->samp_rate;
cfg.bit_rate = audio->bit_rate;
cfg.stream_format = AUDIO_AAC_FORMAT_RAW;
if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
break;
}
case AUDIO_SET_AAC_ENC_CONFIG: {
struct msm_audio_aac_enc_config cfg;
unsigned int record_quality;
if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
if (cfg.stream_format != AUDIO_AAC_FORMAT_RAW) {
MM_ERR("unsupported AAC format\n");
rc = -EINVAL;
break;
}
record_quality = bitrate_to_record_quality(cfg.sample_rate,
cfg.channels, cfg.bit_rate);
/* Range of Record Quality Supported by DSP, Q12 format */
if ((record_quality < 0x800) || (record_quality > 0x4000)) {
MM_ERR("Unsupported bit rate \n");
rc = -EINVAL;
break;
}
MM_DBG("channels = %d\n", cfg.channels);
if (cfg.channels == 1) {
cfg.channels = AUDREC_CMD_MODE_MONO;
} else if (cfg.channels == 2) {
cfg.channels = AUDREC_CMD_MODE_STEREO;
} else {
rc = -EINVAL;
break;
}
MM_DBG("channels = %d\n", cfg.channels);
audio->samp_rate = cfg.sample_rate;
audio->channel_mode = cfg.channels;
audio->bit_rate = cfg.bit_rate;
audio->record_quality = record_quality;
MM_DBG(" Record Quality = 0x%8x \n", audio->record_quality);
break;
}
case AUDIO_GET_SESSION_ID: {
if (copy_to_user((void *) arg, &audio->enc_id,
sizeof(unsigned short))) {
rc = -EFAULT;
}
break;
}
default:
rc = -EINVAL;
}
mutex_unlock(&audio->lock);
return rc;
}
static ssize_t audaac_in_read(struct file *file,
char __user *buf,
size_t count, loff_t *pos)
{
struct audio_in *audio = file->private_data;
unsigned long flags;
const char __user *start = buf;
void *data;
uint32_t index;
uint32_t size;
int rc = 0;
struct aac_encoded_meta_in meta_field;
struct audio_frame_nt *nt_frame;
MM_DBG(" count = %d\n", count);
mutex_lock(&audio->read_lock);
while (count > 0) {
rc = wait_event_interruptible(
audio->wait, (audio->in_count > 0) || audio->stopped ||
audio->abort || audio->rflush);
if (rc < 0)
break;
if (audio->rflush) {
rc = -EBUSY;
break;
}
if (audio->stopped && !audio->in_count) {
MM_DBG("Driver in stop state, No more buffer to read");
rc = 0;/* End of File */
break;
}
if (audio->abort) {
rc = -EPERM; /* Not permitted due to abort */
break;
}
index = audio->in_tail;
data = (uint8_t *) audio->in[index].data;
size = audio->in[index].size;
if (audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) {
nt_frame = (struct audio_frame_nt *)(data -
sizeof(struct audio_frame_nt));
memcpy((char *)&meta_field.time_stamp_dword_lsw,
(char *)&nt_frame->time_stamp_dword_lsw, 12);
meta_field.metadata_len =
sizeof(struct aac_encoded_meta_in);
if (copy_to_user((char *)start, (char *)&meta_field,
sizeof(struct aac_encoded_meta_in))) {
rc = -EFAULT;
break;
}
if (nt_frame->nflag_lsw & 0x0001) {
MM_ERR("recieved EOS in read call\n");
audio->eos_ack = 1;
}
buf += sizeof(struct aac_encoded_meta_in);
count -= sizeof(struct aac_encoded_meta_in);
}
if (count >= size) {
if (copy_to_user(buf, data, size)) {
rc = -EFAULT;
break;
}
spin_lock_irqsave(&audio->dsp_lock, flags);
if (index != audio->in_tail) {
/* overrun -- data is
* invalid and we need to retry */
spin_unlock_irqrestore(&audio->dsp_lock, flags);
continue;
}
audio->in[index].size = 0;
audio->in_tail = (audio->in_tail + 1) & (FRAME_NUM - 1);
audio->in_count--;
spin_unlock_irqrestore(&audio->dsp_lock, flags);
count -= size;
buf += size;
if ((audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) &&
(!audio->eos_ack)) {
MM_DBG("sending read ptr command %d %d\n",
audio->dsp_cnt,
audio->in_tail);
audaac_dsp_read_buffer(audio,
audio->dsp_cnt++);
break;
}
} else {
MM_ERR("short read\n");
break;
}
break;
}
mutex_unlock(&audio->read_lock);
if (buf > start)
return buf - start;
return rc;
}
static void audpreproc_pcm_send_data(struct audio_in *audio, unsigned needed)
{
struct buffer *frame;
unsigned long flags;
MM_DBG("\n");
spin_lock_irqsave(&audio->dsp_lock, flags);
if (!audio->running)
goto done;
if (needed && !audio->wflush) {
/* We were called from the callback because the DSP
* requested more data. Note that the DSP does want
* more data, and if a buffer was in-flight, mark it
* as available (since the DSP must now be done with
* it).
*/
audio->out_needed = 1;
frame = audio->out + audio->out_tail;
if (frame->used == 0xffffffff) {
MM_DBG("frame %d free\n", audio->out_tail);
frame->used = 0;
audio->out_tail ^= 1;
wake_up(&audio->write_wait);
}
}
if (audio->out_needed) {
/* If the DSP currently wants data and we have a
* buffer available, we will send it and reset
* the needed flag. We'll mark the buffer as in-flight
* so that it won't be recycled until the next buffer
* is requested
*/
frame = audio->out + audio->out_tail;
if (frame->used) {
BUG_ON(frame->used == 0xffffffff);
MM_DBG("frame %d busy\n", audio->out_tail);
audpreproc_pcm_buffer_ptr_refresh(audio,
audio->out_tail,
frame->used);
frame->used = 0xffffffff;
audio->out_needed = 0;
}
}
done:
spin_unlock_irqrestore(&audio->dsp_lock, flags);
}
static int audaac_in_fsync(struct file *file, loff_t ppos1, loff_t ppos2, int datasync)
{
struct audio_in *audio = file->private_data;
int rc = 0;
MM_DBG("\n"); /* Macro prints the file name and function */
if (!audio->running || (audio->mode == MSM_AUD_ENC_MODE_TUNNEL)) {
rc = -EINVAL;
goto done_nolock;
}
mutex_lock(&audio->write_lock);
rc = wait_event_interruptible(audio->write_wait,
audio->wflush);
MM_DBG("waked on by some event audio->wflush = %d\n", audio->wflush);
if (rc < 0)
goto done;
else if (audio->wflush) {
rc = -EBUSY;
goto done;
}
done:
mutex_unlock(&audio->write_lock);
done_nolock:
return rc;
}
int audpreproc_aac_process_eos(struct audio_in *audio,
const char __user *buf_start, unsigned short mfield_size)
{
struct buffer *frame;
int rc = 0;
frame = audio->out + audio->out_head;
rc = wait_event_interruptible(audio->write_wait,
(audio->out_needed &&
audio->out[0].used == 0 &&
audio->out[1].used == 0)
|| (audio->stopped)
|| (audio->wflush));
if (rc < 0)
goto done;
if (audio->stopped || audio->wflush) {
rc = -EBUSY;
goto done;
}
if (copy_from_user(frame->data, buf_start, mfield_size)) {
rc = -EFAULT;
goto done;
}
frame->mfield_sz = mfield_size;
audio->out_head ^= 1;
frame->used = mfield_size;
MM_DBG("copying meta_out frame->used = %d\n", frame->used);
audpreproc_pcm_send_data(audio, 0);
done:
return rc;
}
static ssize_t audaac_in_write(struct file *file,
const char __user *buf,
size_t count, loff_t *pos)
{
struct audio_in *audio = file->private_data;
const char __user *start = buf;
struct buffer *frame;
char *cpy_ptr;
int rc = 0, eos_condition = AUDPREPROC_AAC_EOS_NONE;
unsigned short mfield_size = 0;
int write_count = count;
MM_DBG("cnt=%d\n", count);
if (count & 1)
return -EINVAL;
mutex_lock(&audio->write_lock);
frame = audio->out + audio->out_head;
cpy_ptr = frame->data;
rc = wait_event_interruptible(audio->write_wait,
(frame->used == 0)
|| (audio->stopped)
|| (audio->wflush));
if (rc < 0)
goto error;
if (audio->stopped || audio->wflush) {
rc = -EBUSY;
goto error;
}
if (audio->mfield) {
if (buf == start) {
/* Processing beginning of user buffer */
if (__get_user(mfield_size,
(unsigned short __user *) buf)) {
rc = -EFAULT;
goto error;
} else if (mfield_size > count) {
rc = -EINVAL;
goto error;
}
MM_DBG("mf offset_val %x\n", mfield_size);
if (copy_from_user(cpy_ptr, buf, mfield_size)) {
rc = -EFAULT;
goto error;
}
/* Check if EOS flag is set and buffer has
* contains just meta field
*/
if (cpy_ptr[AUDPREPROC_AAC_EOS_FLG_OFFSET] &
AUDPREPROC_AAC_EOS_FLG_MASK) {
MM_DBG("EOS SET\n");
eos_condition = AUDPREPROC_AAC_EOS_SET;
if (mfield_size == count) {
buf += mfield_size;
if (audio->mode ==
MSM_AUD_ENC_MODE_NONTUNNEL) {
eos_condition = 0;
goto exit;
}
goto error;
} else
cpy_ptr[AUDPREPROC_AAC_EOS_FLG_OFFSET] &=
~AUDPREPROC_AAC_EOS_FLG_MASK;
}
cpy_ptr += mfield_size;
count -= mfield_size;
buf += mfield_size;
} else {
mfield_size = 0;
MM_DBG("continuous buffer\n");
}
frame->mfield_sz = mfield_size;
}
MM_DBG("copying the stream count = %d\n", count);
if (copy_from_user(cpy_ptr, buf, count)) {
rc = -EFAULT;
goto error;
}
exit:
frame->used = count;
audio->out_head ^= 1;
if (!audio->flush_ack)
audpreproc_pcm_send_data(audio, 0);
else {
audpreproc_pcm_send_data(audio, 1);
audio->flush_ack = 0;
}
if (eos_condition == AUDPREPROC_AAC_EOS_SET)
rc = audpreproc_aac_process_eos(audio, start, mfield_size);
mutex_unlock(&audio->write_lock);
return write_count;
error:
mutex_unlock(&audio->write_lock);
return rc;
}
static int audaac_in_release(struct inode *inode, struct file *file)
{
struct audio_in *audio = file->private_data;
mutex_lock(&audio->lock);
/* with draw frequency for session
incase not stopped the driver */
msm_snddev_withdraw_freq(audio->enc_id, SNDDEV_CAP_TX,
AUDDEV_CLNT_ENC);
auddev_unregister_evt_listner(AUDDEV_CLNT_ENC, audio->enc_id);
/*reset the sampling frequency information at audpreproc layer*/
audio->session_info.sampling_freq = 0;
audpreproc_update_audrec_info(&audio->session_info);
audaac_in_disable(audio);
audaac_in_flush(audio);
msm_adsp_put(audio->audrec);
audpreproc_aenc_free(audio->enc_id);
audio->audrec = NULL;
audio->opened = 0;
if (audio->data) {
iounmap(audio->map_v_read);
free_contiguous_memory_by_paddr(audio->phys);
audio->data = NULL;
}
if (audio->out_data) {
iounmap(audio->map_v_write);
free_contiguous_memory_by_paddr(audio->out_phys);
audio->out_data = NULL;
}
mutex_unlock(&audio->lock);
return 0;
}
struct audio_in the_audio_aac_in;
static int audaac_in_open(struct inode *inode, struct file *file)
{
struct audio_in *audio = &the_audio_aac_in;
int rc;
int encid;
mutex_lock(&audio->lock);
if (audio->opened) {
rc = -EBUSY;
goto done;
}
audio->phys = allocate_contiguous_ebi_nomap(DMASZ, SZ_4K);
if (audio->phys) {
audio->map_v_read = ioremap(audio->phys, DMASZ);
if (IS_ERR(audio->map_v_read)) {
MM_ERR("could not map DMA buffers\n");
rc = -ENOMEM;
free_contiguous_memory_by_paddr(audio->phys);
goto done;
}
audio->data = audio->map_v_read;
} else {
MM_ERR("could not allocate DMA buffers\n");
rc = -ENOMEM;
goto done;
}
MM_DBG("Memory addr = 0x%8x phy addr = 0x%8x\n",\
(int) audio->data, (int) audio->phys);
if ((file->f_mode & FMODE_WRITE) &&
(file->f_mode & FMODE_READ)) {
audio->mode = MSM_AUD_ENC_MODE_NONTUNNEL;
} else if (!(file->f_mode & FMODE_WRITE) &&
(file->f_mode & FMODE_READ)) {
audio->mode = MSM_AUD_ENC_MODE_TUNNEL;
MM_DBG("Opened for tunnel mode encoding\n");
} else {
rc = -EACCES;
goto done;
}
/* Settings will be re-config at AUDIO_SET_CONFIG,
* but at least we need to have initial config
*/
if (audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL)
audio->buffer_size = (NT_FRAME_SIZE - 24);
else
audio->buffer_size = (FRAME_SIZE - 8);
audio->enc_type = ENC_TYPE_AAC | audio->mode;
audio->samp_rate = 8000;
audio->channel_mode = AUDREC_CMD_MODE_MONO;
/* For AAC, bit rate hard coded, default settings is
* sample rate (8000) x channel count (1) x recording quality (1.75)
* = 14000 bps */
audio->bit_rate = 14000;
audio->record_quality = 0x1c00;
MM_DBG("enc_type = %x\n", audio->enc_type);
encid = audpreproc_aenc_alloc(audio->enc_type, &audio->module_name,
&audio->queue_ids);
if (encid < 0) {
MM_ERR("No free encoder available\n");
rc = -ENODEV;
goto done;
}
audio->enc_id = encid;
rc = msm_adsp_get(audio->module_name, &audio->audrec,
&audrec_aac_adsp_ops, audio);
if (rc) {
audpreproc_aenc_free(audio->enc_id);
goto done;
}
audio->stopped = 0;
audio->source = 0;
audio->abort = 0;
audio->wflush = 0;
audio->rflush = 0;
audio->flush_ack = 0;
audaac_in_flush(audio);
audaac_out_flush(audio);
audio->out_phys = allocate_contiguous_ebi_nomap(BUFFER_SIZE, SZ_4K);
if (!audio->out_phys) {
MM_ERR("could not allocate write buffers\n");
rc = -ENOMEM;
goto evt_error;
} else {
audio->map_v_write = ioremap(
audio->out_phys, BUFFER_SIZE);
if (IS_ERR(audio->map_v_write)) {
MM_ERR("could not map write phys address\n");
rc = -ENOMEM;
free_contiguous_memory_by_paddr(audio->out_phys);
goto evt_error;
}
audio->out_data = audio->map_v_write;
MM_DBG("write buf: phy addr 0x%08x kernel addr 0x%08x\n",
audio->out_phys, (int)audio->out_data);
}
audio->build_id = socinfo_get_build_id();
MM_DBG("Modem build id = %s\n", audio->build_id);
/* Initialize buffer */
audio->out[0].data = audio->out_data + 0;
audio->out[0].addr = audio->out_phys + 0;
audio->out[0].size = OUT_BUFFER_SIZE;
audio->out[1].data = audio->out_data + OUT_BUFFER_SIZE;
audio->out[1].addr = audio->out_phys + OUT_BUFFER_SIZE;
audio->out[1].size = OUT_BUFFER_SIZE;
MM_DBG("audio->out[0].data = %d audio->out[1].data = %d",
(unsigned int)audio->out[0].data,
(unsigned int)audio->out[1].data);
audio->device_events = AUDDEV_EVT_DEV_RDY | AUDDEV_EVT_DEV_RLS |
AUDDEV_EVT_FREQ_CHG;
rc = auddev_register_evt_listner(audio->device_events,
AUDDEV_CLNT_ENC, audio->enc_id,
aac_in_listener, (void *) audio);
if (rc) {
MM_ERR("failed to register device event listener\n");
iounmap(audio->map_v_write);
free_contiguous_memory_by_paddr(audio->out_phys);
goto evt_error;
}
audio->mfield = META_OUT_SIZE;
file->private_data = audio;
audio->opened = 1;
audio->out_frame_cnt++;
rc = 0;
done:
mutex_unlock(&audio->lock);
return rc;
evt_error:
msm_adsp_put(audio->audrec);
audpreproc_aenc_free(audio->enc_id);
mutex_unlock(&audio->lock);
return rc;
}
static const struct file_operations audio_in_fops = {
.owner = THIS_MODULE,
.open = audaac_in_open,
.release = audaac_in_release,
.read = audaac_in_read,
.write = audaac_in_write,
.fsync = audaac_in_fsync,
.unlocked_ioctl = audaac_in_ioctl,
};
struct miscdevice audio_aac_in_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = "msm_aac_in",
.fops = &audio_in_fops,
};
static int __init audaac_in_init(void)
{
mutex_init(&the_audio_aac_in.lock);
mutex_init(&the_audio_aac_in.read_lock);
spin_lock_init(&the_audio_aac_in.dsp_lock);
spin_lock_init(&the_audio_aac_in.dev_lock);
init_waitqueue_head(&the_audio_aac_in.wait);
init_waitqueue_head(&the_audio_aac_in.wait_enable);
mutex_init(&the_audio_aac_in.write_lock);
init_waitqueue_head(&the_audio_aac_in.write_wait);
return misc_register(&audio_aac_in_misc);
}
device_initcall(audaac_in_init);
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