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M7350/kernel/arch/arm/mach-msm/qdsp5v2/audio_a2dp_in.c

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M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
/* Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
*
* sbc/pcm audio input driver
* Based on the pcm input driver in arch/arm/mach-msm/qdsp5v2/audio_pcm_in.c
*
* Copyright (C) 2008 HTC Corporation
* Copyright (C) 2008 Google, Inc.
* Copyright (c) 2012 The Linux Foundation. All rights reserved.
*
* All source code in this file is licensed under the following license except
* where indicated.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* 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.h>
#include <linux/msm_audio_sbc.h>
#include <linux/msm_ion.h>
#include <linux/memory_alloc.h>
#include <mach/iommu.h>
#include <mach/iommu_domains.h>
#include <mach/msm_adsp.h>
#include <mach/msm_memtypes.h>
#include <mach/socinfo.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>
/* FRAME_NUM must be a power of two */
#define FRAME_NUM (8)
#define FRAME_SIZE (2052 * 2)
#define FRAME_SIZE_SBC (768 * 2)
#define MONO_DATA_SIZE (2048)
#define STEREO_DATA_SIZE (MONO_DATA_SIZE * 2)
#define DMASZ (FRAME_SIZE * FRAME_NUM)
struct buffer {
void *data;
uint32_t size;
uint32_t read;
uint32_t addr;
uint32_t frame_num;
uint32_t frame_len;
};
struct audio_a2dp_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;
struct msm_adsp_module *audrec;
struct audrec_session_info session_info; /*audrec session info*/
/* configuration to use on next enable */
uint32_t samp_rate;
uint32_t channel_mode;
uint32_t buffer_size; /* 2048 for mono, 4096 for stereo */
uint32_t enc_type;
struct msm_audio_sbc_enc_config cfg;
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;
const char *module_name;
unsigned queue_ids;
uint16_t enc_id; /* Session Id */
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;
void *msm_map;
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 ion_client *client;
struct ion_handle *output_buff_handle;
};
static struct audio_a2dp_in the_audio_a2dp_in;
struct wav_frame {
uint16_t frame_count_lsw;
uint16_t frame_count_msw;
uint16_t frame_length;
uint16_t erased_a2dp;
unsigned char raw_bitstream[]; /* samples */
};
struct sbc_frame {
uint16_t bit_rate_msw;
uint16_t bit_rate_lsw;
uint16_t frame_length;
uint16_t frame_num;
unsigned char raw_bitstream[]; /* samples */
};
struct audio_frame {
union {
struct wav_frame wav;
struct sbc_frame sbc;
} a2dp;
} __attribute__((packed));
/* 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 auda2dp_in_enc_config(struct audio_a2dp_in *audio, int enable);
static int auda2dp_in_param_config(struct audio_a2dp_in *audio);
static int auda2dp_in_mem_config(struct audio_a2dp_in *audio);
static int auda2dp_in_record_config(struct audio_a2dp_in *audio, int enable);
static int auda2dp_dsp_read_buffer(struct audio_a2dp_in *audio,
uint32_t read_cnt);
static void auda2dp_in_get_dsp_frames(struct audio_a2dp_in *audio);
static void auda2dp_in_flush(struct audio_a2dp_in *audio);
static void a2dp_in_listener(u32 evt_id, union auddev_evt_data *evt_payload,
void *private_data)
{
struct audio_a2dp_in *audio = (struct audio_a2dp_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))
auda2dp_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;
/* Turn of as per source */
if (audio->source)
auda2dp_in_record_config(audio, 1);
else
/* Turn off all */
auda2dp_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) {
/* Stop Recording sample rate does not match
with device sample rate */
if (evt_payload->freq_info.sample_rate !=
audio->samp_rate) {
auda2dp_in_record_config(audio, 0);
audio->abort = 1;
wake_up(&audio->wait);
}
}
break;
}
default:
MM_ERR("wrong event %d\n", evt_id);
break;
}
}
/* ------------------- dsp preproc event handler--------------------- */
static void audpreproc_dsp_event(void *data, unsigned id, void *msg)
{
struct audio_a2dp_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)
auda2dp_in_param_config(audio);
else { /* Encoder disable success */
audio->running = 0;
auda2dp_in_record_config(audio, 0);
}
break;
}
case AUDPREPROC_CMD_ENC_PARAM_CFG_DONE_MSG: {
MM_DBG("CMD_ENC_PARAM_CFG_DONE_MSG \n");
auda2dp_in_mem_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_a2dp_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->dev_cnt > 0)
auda2dp_in_record_config(audio, 1);
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);
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);
auda2dp_in_get_dsp_frames(audio);
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 auda2dp_in_get_dsp_frames(struct audio_a2dp_in *audio)
{
struct audio_frame *frame;
uint32_t index;
unsigned long flags;
index = audio->in_head;
frame = (void *) (((char *)audio->in[index].data) - \
sizeof(*frame));
spin_lock_irqsave(&audio->dsp_lock, flags);
if (audio->enc_type == ENC_TYPE_WAV)
audio->in[index].size = frame->a2dp.wav.frame_length;
else if (audio->enc_type == ENC_TYPE_SBC) {
audio->in[index].size = frame->a2dp.sbc.frame_length *
frame->a2dp.sbc.frame_num;
audio->in[index].frame_num = frame->a2dp.sbc.frame_num;
audio->in[index].frame_len = frame->a2dp.sbc.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)
audio->in_tail = (audio->in_tail + 1) & (FRAME_NUM - 1);
else
audio->in_count++;
auda2dp_dsp_read_buffer(audio, audio->dsp_cnt++);
spin_unlock_irqrestore(&audio->dsp_lock, flags);
wake_up(&audio->wait);
}
static struct msm_adsp_ops audrec_adsp_ops = {
.event = audrec_dsp_event,
};
static int auda2dp_in_enc_config(struct audio_a2dp_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;
} else {
cmd.cmd_id = AUDPREPROC_AUDREC_CMD_ENC_CFG;
}
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 auda2dp_in_param_config(struct audio_a2dp_in *audio)
{
if (audio->enc_type == ENC_TYPE_WAV) {
struct audpreproc_audrec_cmd_parm_cfg_wav cmd;
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;
return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd));
} else if (audio->enc_type == ENC_TYPE_SBC) {
struct audpreproc_audrec_cmd_parm_cfg_sbc cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.common.cmd_id = AUDPREPROC_AUDREC_CMD_PARAM_CFG;
cmd.common.stream_id = audio->enc_id;
cmd.aud_rec_sbc_enc_param =
(audio->cfg.number_of_blocks <<
AUDREC_SBC_ENC_PARAM_NUM_SUB_BLOCKS_MASK) |
(audio->cfg.number_of_subbands <<
AUDREC_SBC_ENC_PARAM_NUM_SUB_BANDS_MASK) |
(audio->cfg.mode <<
AUDREC_SBC_ENC_PARAM_MODE_MASK) |
(audio->cfg.bit_allocation <<
AUDREC_SBC_ENC_PARAM_BIT_ALLOC_MASK);
cmd.aud_rec_sbc_bit_rate_msw =
(audio->cfg.bit_rate & 0xFFFF0000) >> 16;
cmd.aud_rec_sbc_bit_rate_lsw =
(audio->cfg.bit_rate & 0xFFFF);
return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd));
}
return 0;
}
/* To Do: msm_snddev_route_enc(audio->enc_id); */
static int auda2dp_in_record_config(struct audio_a2dp_in *audio, int enable)
{
struct audpreproc_afe_cmd_audio_record_cfg cmd;
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 auda2dp_in_mem_config(struct audio_a2dp_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;
/* prepare buffer pointers:
* Wav:
* Mono: 1024 samples + 4 halfword header
* Stereo: 2048 samples + 4 halfword header
* SBC:
* 768 + 4 halfword header
*/
if (audio->enc_type == ENC_TYPE_SBC) {
for (n = 0; n < FRAME_NUM; n++) {
audio->in[n].data = data + 4;
data += (4 + (FRAME_SIZE_SBC/2));
MM_DBG("0x%8x\n", (int)(audio->in[n].data - 8));
}
} else if (audio->enc_type == ENC_TYPE_WAV) {
for (n = 0; n < FRAME_NUM; n++) {
audio->in[n].data = data + 4;
data += (4 + (audio->channel_mode ? 2048 : 1024));
MM_DBG("0x%8x\n", (int)(audio->in[n].data - 8));
}
}
return audrec_send_audrecqueue(audio, &cmd, sizeof(cmd));
}
static int auda2dp_dsp_read_buffer(struct audio_a2dp_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));
}
/* must be called with audio->lock held */
static int auda2dp_in_enable(struct audio_a2dp_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;
auda2dp_in_enc_config(audio, 1);
return 0;
}
/* must be called with audio->lock held */
static int auda2dp_in_disable(struct audio_a2dp_in *audio)
{
if (audio->enabled) {
audio->enabled = 0;
auda2dp_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 auda2dp_in_flush(struct audio_a2dp_in *audio)
{
int i;
audio->dsp_cnt = 0;
audio->in_head = 0;
audio->in_tail = 0;
audio->in_count = 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);
}
/* ------------------- device --------------------- */
static long auda2dp_in_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct audio_a2dp_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 = auda2dp_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;
msm_snddev_withdraw_freq(audio->enc_id,
SNDDEV_CAP_TX, AUDDEV_CLNT_ENC);
MM_DBG("msm_snddev_withdraw_freq\n");
} else
rc = 0;
}
audio->stopped = 0;
break;
}
case AUDIO_STOP: {
/*reset the sampling frequency information at audpreproc layer*/
audio->session_info.sampling_freq = 0;
audpreproc_update_audrec_info(&audio->session_info);
rc = auda2dp_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: {
if (audio->stopped) {
/* 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.
*/
wake_up(&audio->wait);
mutex_lock(&audio->read_lock);
auda2dp_in_flush(audio);
mutex_unlock(&audio->read_lock);
}
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->enc_type == ENC_TYPE_SBC) &&
(cfg.buffer_size != FRAME_SIZE_SBC))
rc = -EINVAL;
else
audio->buffer_size = cfg.buffer_size;
break;
}
case AUDIO_GET_STREAM_CONFIG: {
struct msm_audio_stream_config cfg;
memset(&cfg, 0, sizeof(cfg));
if (audio->enc_type == ENC_TYPE_SBC)
cfg.buffer_size = FRAME_SIZE_SBC;
else
cfg.buffer_size = MONO_DATA_SIZE;
cfg.buffer_count = FRAME_NUM;
if (copy_to_user((void *) arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
break;
}
case AUDIO_SET_SBC_ENC_CONFIG: {
if (copy_from_user(&audio->cfg, (void *) arg,
sizeof(audio->cfg))) {
rc = -EFAULT;
break;
}
audio->samp_rate = audio->cfg.sample_rate;
audio->channel_mode = audio->cfg.channels;
audio->enc_type = ENC_TYPE_SBC;
break;
}
case AUDIO_SET_CONFIG: {
struct msm_audio_config cfg;
if (copy_from_user(&cfg, (void *) arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
if (cfg.channel_count == 1) {
cfg.channel_count = AUDREC_CMD_MODE_MONO;
audio->buffer_size = MONO_DATA_SIZE;
} else if (cfg.channel_count == 2) {
cfg.channel_count = AUDREC_CMD_MODE_STEREO;
audio->buffer_size = STEREO_DATA_SIZE;
} else {
rc = -EINVAL;
break;
}
audio->samp_rate = cfg.sample_rate;
audio->channel_mode = cfg.channel_count;
audio->enc_type = ENC_TYPE_WAV;
break;
}
case AUDIO_GET_SBC_ENC_CONFIG: {
struct msm_audio_sbc_enc_config cfg;
memset(&cfg, 0, sizeof(cfg));
cfg.bit_allocation = audio->cfg.bit_allocation;
cfg.mode = audio->cfg.mode;
cfg.number_of_subbands = audio->cfg.number_of_subbands;
cfg.number_of_blocks = audio->cfg.number_of_blocks;
cfg.sample_rate = audio->samp_rate;
cfg.channels = audio->channel_mode;
cfg.bit_rate = audio->cfg.bit_rate;
if (copy_to_user((void *) arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
break;
}
case AUDIO_GET_CONFIG: {
struct msm_audio_config cfg;
memset(&cfg, 0, sizeof(cfg));
cfg.buffer_count = FRAME_NUM;
cfg.sample_rate = audio->samp_rate;
if (audio->channel_mode == AUDREC_CMD_MODE_MONO) {
cfg.channel_count = 1;
cfg.buffer_size = MONO_DATA_SIZE;
} else {
cfg.channel_count = 2;
cfg.buffer_size = STEREO_DATA_SIZE;
}
cfg.type = ENC_TYPE_WAV;
if (copy_to_user((void *) arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
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 auda2dp_in_read(struct file *file,
char __user *buf,
size_t count, loff_t *pos)
{
struct audio_a2dp_in *audio = file->private_data;
unsigned long flags;
const char __user *start = buf;
void *data;
uint32_t index;
uint32_t size;
int rc = 0;
uint32_t f_len = 0, f_num = 0;
int i = 0;
mutex_lock(&audio->read_lock);
while (count > 0) {
rc = wait_event_interruptible(
audio->wait, (audio->in_count > 0) || audio->stopped ||
audio->abort);
if (rc < 0)
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 (count >= size) {
if (audio->enc_type == ENC_TYPE_SBC &&
(audio->in[index].frame_len % 2)) {
f_len = audio->in[index].frame_len;
f_num = audio->in[index].frame_num;
for (i = 0; i < f_num; i++) {
if (copy_to_user(&buf[i * f_len],
(uint8_t *) (data + (i * (f_len + 1))),
f_len)) {
rc = -EFAULT;
break;
}
}
} else {
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;
} else {
MM_ERR("short read\n");
break;
}
}
mutex_unlock(&audio->read_lock);
if (buf > start)
return buf - start;
return rc;
}
static ssize_t auda2dp_in_write(struct file *file,
const char __user *buf,
size_t count, loff_t *pos)
{
return -EINVAL;
}
static int auda2dp_in_release(struct inode *inode, struct file *file)
{
struct audio_a2dp_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);
auda2dp_in_disable(audio);
auda2dp_in_flush(audio);
msm_adsp_put(audio->audrec);
audpreproc_aenc_free(audio->enc_id);
audio->audrec = NULL;
audio->opened = 0;
if (audio->data) {
ion_unmap_kernel(audio->client, audio->output_buff_handle);
ion_free(audio->client, audio->output_buff_handle);
audio->data = NULL;
}
ion_client_destroy(audio->client);
mutex_unlock(&audio->lock);
return 0;
}
static int auda2dp_in_open(struct inode *inode, struct file *file)
{
struct audio_a2dp_in *audio = &the_audio_a2dp_in;
int rc;
int encid;
int len = 0;
unsigned long ionflag = 0;
ion_phys_addr_t addr = 0;
struct ion_handle *handle = NULL;
struct ion_client *client = NULL;
mutex_lock(&audio->lock);
if (audio->opened) {
rc = -EBUSY;
goto done;
}
client = msm_ion_client_create(UINT_MAX, "Audio_a2dp_in_client");
if (IS_ERR_OR_NULL(client)) {
MM_ERR("Unable to create ION client\n");
rc = -ENOMEM;
goto client_create_error;
}
audio->client = client;
MM_DBG("allocating mem sz = %d\n", DMASZ);
handle = ion_alloc(client, DMASZ, SZ_4K,
ION_HEAP(ION_AUDIO_HEAP_ID), 0);
if (IS_ERR_OR_NULL(handle)) {
MM_ERR("Unable to create allocate O/P buffers\n");
rc = -ENOMEM;
goto output_buff_alloc_error;
}
audio->output_buff_handle = handle;
rc = ion_phys(client , handle, &addr, &len);
if (rc) {
MM_ERR("O/P buffers:Invalid phy: %x sz: %x\n",
(unsigned int) addr, (unsigned int) len);
rc = -ENOMEM;
goto output_buff_get_phys_error;
} else {
MM_INFO("O/P buffers:valid phy: %x sz: %x\n",
(unsigned int) addr, (unsigned int) len);
}
audio->phys = (int32_t)addr;
rc = ion_handle_get_flags(client, handle, &ionflag);
if (rc) {
MM_ERR("could not get flags for the handle\n");
rc = -ENOMEM;
goto output_buff_get_flags_error;
}
audio->msm_map = ion_map_kernel(client, handle);
if (IS_ERR(audio->data)) {
MM_ERR("could not map read buffers,freeing instance 0x%08x\n",
(int)audio);
rc = -ENOMEM;
goto output_buff_map_error;
}
MM_DBG("read buf: phy addr 0x%08x kernel addr 0x%08x\n",
audio->phys, (int)audio->data);
audio->data = (char *)audio->msm_map;
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)) {
rc = -EACCES;
MM_ERR("Non tunnel encoding is not supported\n");
goto done;
} 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/SBC_ENC_CONFIG,
* but at least we need to have initial config
*/
audio->channel_mode = AUDREC_CMD_MODE_MONO;
audio->buffer_size = FRAME_SIZE_SBC;
audio->samp_rate = 48000;
audio->enc_type = ENC_TYPE_SBC | audio->mode;
audio->cfg.bit_allocation = AUDIO_SBC_BA_SNR;
audio->cfg.mode = AUDIO_SBC_MODE_JSTEREO;
audio->cfg.number_of_subbands = AUDIO_SBC_BANDS_8;
audio->cfg.number_of_blocks = AUDIO_SBC_BLOCKS_16;
audio->cfg.bit_rate = 320000; /* max 512kbps(mono), 320kbs(others) */
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_adsp_ops, audio);
if (rc) {
audpreproc_aenc_free(audio->enc_id);
goto done;
}
audio->stopped = 0;
audio->source = 0;
audio->abort = 0;
auda2dp_in_flush(audio);
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,
a2dp_in_listener, (void *) audio);
if (rc) {
MM_ERR("failed to register device event listener\n");
goto evt_error;
}
audio->build_id = socinfo_get_build_id();
MM_DBG("Modem build id = %s\n", audio->build_id);
file->private_data = audio;
audio->opened = 1;
rc = 0;
done:
mutex_unlock(&audio->lock);
return rc;
evt_error:
output_buff_map_error:
output_buff_get_phys_error:
output_buff_get_flags_error:
ion_free(client, audio->output_buff_handle);
output_buff_alloc_error:
ion_client_destroy(client);
client_create_error:
msm_adsp_put(audio->audrec);
audpreproc_aenc_free(audio->enc_id);
mutex_unlock(&audio->lock);
return rc;
}
static const struct file_operations audio_a2dp_in_fops = {
.owner = THIS_MODULE,
.open = auda2dp_in_open,
.release = auda2dp_in_release,
.read = auda2dp_in_read,
.write = auda2dp_in_write,
.unlocked_ioctl = auda2dp_in_ioctl,
};
struct miscdevice audio_a2dp_in_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = "msm_a2dp_in",
.fops = &audio_a2dp_in_fops,
};
static int __init auda2dp_in_init(void)
{
mutex_init(&the_audio_a2dp_in.lock);
mutex_init(&the_audio_a2dp_in.read_lock);
spin_lock_init(&the_audio_a2dp_in.dsp_lock);
spin_lock_init(&the_audio_a2dp_in.dev_lock);
init_waitqueue_head(&the_audio_a2dp_in.wait);
init_waitqueue_head(&the_audio_a2dp_in.wait_enable);
return misc_register(&audio_a2dp_in_misc);
}
device_initcall(auda2dp_in_init);
MODULE_DESCRIPTION("MSM SBC encode driver");
MODULE_LICENSE("GPL v2");
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