#include <linux/init.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <linux/spinlock.h>
#include <sound/pcm.h>
#include <asm/div64.h>
#include <asm/dma.h>
#include <linux/dma-mapping.h>
#include <sound/pcm_params.h>
#include "q6apm.h"
#define DRV_NAME "q6apm-dai"
#define PLAYBACK_MIN_NUM_PERIODS 2
#define PLAYBACK_MAX_NUM_PERIODS 8
#define PLAYBACK_MAX_PERIOD_SIZE 65536
#define PLAYBACK_MIN_PERIOD_SIZE 128
#define CAPTURE_MIN_NUM_PERIODS 2
#define CAPTURE_MAX_NUM_PERIODS 8
#define CAPTURE_MAX_PERIOD_SIZE 65536
#define CAPTURE_MIN_PERIOD_SIZE 6144
#define BUFFER_BYTES_MAX (PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE)
#define BUFFER_BYTES_MIN (PLAYBACK_MIN_NUM_PERIODS * PLAYBACK_MIN_PERIOD_SIZE)
#define COMPR_PLAYBACK_MAX_FRAGMENT_SIZE (128 * 1024)
#define COMPR_PLAYBACK_MAX_NUM_FRAGMENTS (16 * 4)
#define COMPR_PLAYBACK_MIN_FRAGMENT_SIZE (8 * 1024)
#define COMPR_PLAYBACK_MIN_NUM_FRAGMENTS (4)
#define SID_MASK_DEFAULT 0xF
static const struct snd_compr_codec_caps q6apm_compr_caps = {
.num_descriptors = 1,
.descriptor[0].max_ch = 2,
.descriptor[0].sample_rates = { 8000, 11025, 12000, 16000, 22050,
24000, 32000, 44100, 48000, 88200,
96000, 176400, 192000 },
.descriptor[0].num_sample_rates = 13,
.descriptor[0].bit_rate[0] = 320,
.descriptor[0].bit_rate[1] = 128,
.descriptor[0].num_bitrates = 2,
.descriptor[0].profiles = 0,
.descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO,
.descriptor[0].formats = 0,
};
enum stream_state {
Q6APM_STREAM_IDLE = 0,
Q6APM_STREAM_STOPPED,
Q6APM_STREAM_RUNNING,
};
struct q6apm_dai_rtd {
struct snd_pcm_substream *substream;
struct snd_compr_stream *cstream;
struct snd_codec codec;
struct snd_compr_params codec_param;
struct snd_dma_buffer dma_buffer;
phys_addr_t phys;
unsigned int pcm_size;
unsigned int pcm_count;
unsigned int periods;
uint64_t bytes_sent;
uint64_t bytes_received;
uint64_t copied_total;
uint16_t bits_per_sample;
snd_pcm_uframes_t queue_ptr;
bool next_track;
enum stream_state state;
struct q6apm_graph *graph;
spinlock_t lock;
bool notify_on_drain;
};
struct q6apm_dai_data {
long long sid;
};
static const struct snd_pcm_hardware q6apm_dai_hardware_capture = {
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_NO_REWINDS | SNDRV_PCM_INFO_SYNC_APPLPTR |
SNDRV_PCM_INFO_BATCH),
.formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE),
.rates = SNDRV_PCM_RATE_8000_48000,
.rate_min = 8000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 4,
.buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * CAPTURE_MAX_PERIOD_SIZE,
.period_bytes_min = CAPTURE_MIN_PERIOD_SIZE,
.period_bytes_max = CAPTURE_MAX_PERIOD_SIZE,
.periods_min = CAPTURE_MIN_NUM_PERIODS,
.periods_max = CAPTURE_MAX_NUM_PERIODS,
.fifo_size = 0,
};
static const struct snd_pcm_hardware q6apm_dai_hardware_playback = {
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_NO_REWINDS | SNDRV_PCM_INFO_SYNC_APPLPTR |
SNDRV_PCM_INFO_BATCH),
.formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE),
.rates = SNDRV_PCM_RATE_8000_192000,
.rate_min = 8000,
.rate_max = 192000,
.channels_min = 2,
.channels_max = 8,
.buffer_bytes_max = (PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE),
.period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE,
.period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE,
.periods_min = PLAYBACK_MIN_NUM_PERIODS,
.periods_max = PLAYBACK_MAX_NUM_PERIODS,
.fifo_size = 0,
};
static void event_handler(uint32_t opcode, uint32_t token, void *payload, void *priv)
{
struct q6apm_dai_rtd *prtd = priv;
struct snd_pcm_substream *substream = prtd->substream;
switch (opcode) {
case APM_CLIENT_EVENT_CMD_EOS_DONE:
prtd->state = Q6APM_STREAM_STOPPED;
break;
case APM_CLIENT_EVENT_DATA_WRITE_DONE:
snd_pcm_period_elapsed(substream);
break;
case APM_CLIENT_EVENT_DATA_READ_DONE:
snd_pcm_period_elapsed(substream);
if (prtd->state == Q6APM_STREAM_RUNNING)
q6apm_read(prtd->graph);
break;
default:
break;
}
}
static void event_handler_compr(uint32_t opcode, uint32_t token,
void *payload, void *priv)
{
struct q6apm_dai_rtd *prtd = priv;
struct snd_compr_stream *substream = prtd->cstream;
uint32_t wflags = 0;
uint64_t avail;
uint32_t bytes_written, bytes_to_write;
bool is_last_buffer = false;
guard(spinlock_irqsave)(&prtd->lock);
switch (opcode) {
case APM_CLIENT_EVENT_CMD_EOS_DONE:
if (prtd->notify_on_drain) {
snd_compr_drain_notify(prtd->cstream);
prtd->notify_on_drain = false;
} else {
prtd->state = Q6APM_STREAM_STOPPED;
}
break;
case APM_CLIENT_EVENT_DATA_WRITE_DONE:
bytes_written = token >> APM_WRITE_TOKEN_LEN_SHIFT;
prtd->copied_total += bytes_written;
snd_compr_fragment_elapsed(substream);
if (prtd->state != Q6APM_STREAM_RUNNING)
break;
avail = prtd->bytes_received - prtd->bytes_sent;
if (avail > prtd->pcm_count) {
bytes_to_write = prtd->pcm_count;
} else {
if (substream->partial_drain || prtd->notify_on_drain)
is_last_buffer = true;
bytes_to_write = avail;
}
if (bytes_to_write) {
if (substream->partial_drain && is_last_buffer)
wflags |= APM_LAST_BUFFER_FLAG;
q6apm_write_async(prtd->graph,
bytes_to_write, 0, 0, wflags);
prtd->bytes_sent += bytes_to_write;
if (prtd->notify_on_drain && is_last_buffer)
audioreach_shared_memory_send_eos(prtd->graph);
}
break;
default:
break;
}
}
static int q6apm_dai_prepare(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
struct audioreach_module_config cfg;
struct device *dev = component->dev;
struct q6apm_dai_data *pdata;
int ret;
pdata = snd_soc_component_get_drvdata(component);
if (!pdata)
return -EINVAL;
if (!prtd || !prtd->graph) {
dev_err(dev, "%s: private data null or audio client freed\n", __func__);
return -EINVAL;
}
cfg.direction = substream->stream;
cfg.sample_rate = runtime->rate;
cfg.num_channels = runtime->channels;
cfg.bit_width = prtd->bits_per_sample;
cfg.fmt = SND_AUDIOCODEC_PCM;
audioreach_set_default_channel_mapping(cfg.channel_map, runtime->channels);
if (prtd->state) {
q6apm_graph_stop(prtd->graph);
q6apm_unmap_memory_regions(prtd->graph, substream->stream);
}
prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
ret = q6apm_graph_media_format_shmem(prtd->graph, &cfg);
if (ret < 0) {
dev_err(dev, "%s: q6apm_open_write failed\n", __func__);
return ret;
}
ret = q6apm_graph_media_format_pcm(prtd->graph, &cfg);
if (ret < 0)
dev_err(dev, "%s: CMD Format block failed\n", __func__);
ret = q6apm_map_memory_regions(prtd->graph, substream->stream, prtd->phys,
(prtd->pcm_size / prtd->periods), prtd->periods);
if (ret < 0) {
dev_err(dev, "Audio Start: Buffer Allocation failed rc = %d\n", ret);
return -ENOMEM;
}
ret = q6apm_graph_prepare(prtd->graph);
if (ret) {
dev_err(dev, "Failed to prepare Graph %d\n", ret);
return ret;
}
ret = q6apm_graph_start(prtd->graph);
if (ret) {
dev_err(dev, "Failed to Start Graph %d\n", ret);
return ret;
}
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
int i;
for (i = 0; i < runtime->periods; i++)
q6apm_read(prtd->graph);
}
prtd->state = Q6APM_STREAM_RUNNING;
return 0;
}
static int q6apm_dai_ack(struct snd_soc_component *component, struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
int i, ret = 0, avail_periods;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
avail_periods = (runtime->control->appl_ptr - prtd->queue_ptr)/runtime->period_size;
for (i = 0; i < avail_periods; i++) {
ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, NO_TIMESTAMP);
if (ret < 0) {
dev_err(component->dev, "Error queuing playback buffer %d\n", ret);
return ret;
}
prtd->queue_ptr += runtime->period_size;
}
}
return ret;
}
static int q6apm_dai_trigger(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int cmd)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
break;
case SNDRV_PCM_TRIGGER_STOP:
prtd->state = Q6APM_STREAM_STOPPED;
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int q6apm_dai_open(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *soc_prtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_prtd, 0);
struct device *dev = component->dev;
struct q6apm_dai_data *pdata;
struct q6apm_dai_rtd *prtd;
int graph_id, ret;
graph_id = cpu_dai->driver->id;
pdata = snd_soc_component_get_drvdata(component);
if (!pdata) {
dev_err(dev, "Drv data not found ..\n");
return -EINVAL;
}
prtd = kzalloc_obj(*prtd);
if (prtd == NULL)
return -ENOMEM;
spin_lock_init(&prtd->lock);
prtd->substream = substream;
prtd->graph = q6apm_graph_open(dev, event_handler, prtd, graph_id);
if (IS_ERR(prtd->graph)) {
dev_err(dev, "%s: Could not allocate memory\n", __func__);
ret = PTR_ERR(prtd->graph);
goto err;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
runtime->hw = q6apm_dai_hardware_playback;
else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
runtime->hw = q6apm_dai_hardware_capture;
ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0) {
dev_err(dev, "snd_pcm_hw_constraint_integer failed\n");
goto err;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
BUFFER_BYTES_MIN, BUFFER_BYTES_MAX);
if (ret < 0) {
dev_err(dev, "constraint for buffer bytes min max ret = %d\n", ret);
goto err;
}
}
ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 480);
if (ret < 0) {
dev_err(dev, "constraint for period bytes step ret = %d\n", ret);
goto err;
}
ret = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 480);
if (ret < 0) {
dev_err(dev, "constraint for buffer bytes step ret = %d\n", ret);
goto err;
}
runtime->private_data = prtd;
runtime->dma_bytes = BUFFER_BYTES_MAX;
if (pdata->sid < 0)
prtd->phys = substream->dma_buffer.addr;
else
prtd->phys = substream->dma_buffer.addr | (pdata->sid << 32);
return 0;
err:
kfree(prtd);
return ret;
}
static int q6apm_dai_close(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
if (prtd->state) {
q6apm_graph_stop(prtd->graph);
q6apm_unmap_memory_regions(prtd->graph, substream->stream);
}
q6apm_graph_close(prtd->graph);
prtd->graph = NULL;
kfree(prtd);
runtime->private_data = NULL;
return 0;
}
static snd_pcm_uframes_t q6apm_dai_pointer(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
snd_pcm_uframes_t ptr;
ptr = q6apm_get_hw_pointer(prtd->graph, substream->stream) * runtime->period_size;
if (ptr)
return ptr - 1;
return 0;
}
static int q6apm_dai_hw_params(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
prtd->pcm_size = params_buffer_bytes(params);
prtd->periods = params_periods(params);
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
prtd->bits_per_sample = 16;
break;
case SNDRV_PCM_FORMAT_S24_LE:
prtd->bits_per_sample = 24;
break;
default:
return -EINVAL;
}
return 0;
}
static int q6apm_dai_pcm_new(struct snd_soc_component *component, struct snd_soc_pcm_runtime *rtd)
{
int size = BUFFER_BYTES_MAX;
return snd_pcm_set_fixed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV, component->dev, size);
}
static int q6apm_dai_compr_open(struct snd_soc_component *component,
struct snd_compr_stream *stream)
{
struct snd_soc_pcm_runtime *rtd = stream->private_data;
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd;
struct q6apm_dai_data *pdata;
struct device *dev = component->dev;
int ret, size;
int graph_id;
graph_id = cpu_dai->driver->id;
pdata = snd_soc_component_get_drvdata(component);
if (!pdata)
return -EINVAL;
prtd = kzalloc_obj(*prtd);
if (prtd == NULL)
return -ENOMEM;
prtd->cstream = stream;
prtd->graph = q6apm_graph_open(dev, event_handler_compr, prtd, graph_id);
if (IS_ERR(prtd->graph)) {
ret = PTR_ERR(prtd->graph);
kfree(prtd);
return ret;
}
runtime->private_data = prtd;
runtime->dma_bytes = BUFFER_BYTES_MAX;
size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE * COMPR_PLAYBACK_MAX_NUM_FRAGMENTS;
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, &prtd->dma_buffer);
if (ret)
return ret;
if (pdata->sid < 0)
prtd->phys = prtd->dma_buffer.addr;
else
prtd->phys = prtd->dma_buffer.addr | (pdata->sid << 32);
snd_compr_set_runtime_buffer(stream, &prtd->dma_buffer);
spin_lock_init(&prtd->lock);
q6apm_enable_compress_module(dev, prtd->graph, true);
return 0;
}
static int q6apm_dai_compr_free(struct snd_soc_component *component,
struct snd_compr_stream *stream)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
q6apm_graph_stop(prtd->graph);
q6apm_unmap_memory_regions(prtd->graph, SNDRV_PCM_STREAM_PLAYBACK);
q6apm_graph_close(prtd->graph);
snd_dma_free_pages(&prtd->dma_buffer);
prtd->graph = NULL;
kfree(prtd);
runtime->private_data = NULL;
return 0;
}
static int q6apm_dai_compr_get_caps(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_caps *caps)
{
caps->direction = SND_COMPRESS_PLAYBACK;
caps->min_fragment_size = COMPR_PLAYBACK_MIN_FRAGMENT_SIZE;
caps->max_fragment_size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE;
caps->min_fragments = COMPR_PLAYBACK_MIN_NUM_FRAGMENTS;
caps->max_fragments = COMPR_PLAYBACK_MAX_NUM_FRAGMENTS;
caps->num_codecs = 4;
caps->codecs[0] = SND_AUDIOCODEC_MP3;
caps->codecs[1] = SND_AUDIOCODEC_AAC;
caps->codecs[2] = SND_AUDIOCODEC_FLAC;
caps->codecs[3] = SND_AUDIOCODEC_OPUS_RAW;
return 0;
}
static int q6apm_dai_compr_get_codec_caps(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_codec_caps *codec)
{
switch (codec->codec) {
case SND_AUDIOCODEC_MP3:
*codec = q6apm_compr_caps;
break;
default:
break;
}
return 0;
}
static int q6apm_dai_compr_pointer(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_tstamp64 *tstamp)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
uint64_t temp_copied_total;
guard(spinlock_irqsave)(&prtd->lock);
tstamp->copied_total = prtd->copied_total;
temp_copied_total = tstamp->copied_total;
tstamp->byte_offset = do_div(temp_copied_total, prtd->pcm_size);
return 0;
}
static int q6apm_dai_compr_trigger(struct snd_soc_component *component,
struct snd_compr_stream *stream, int cmd)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, NO_TIMESTAMP);
break;
case SNDRV_PCM_TRIGGER_STOP:
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
break;
case SND_COMPR_TRIGGER_NEXT_TRACK:
prtd->next_track = true;
break;
case SND_COMPR_TRIGGER_DRAIN:
case SND_COMPR_TRIGGER_PARTIAL_DRAIN:
prtd->notify_on_drain = true;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int q6apm_dai_compr_ack(struct snd_soc_component *component, struct snd_compr_stream *stream,
size_t count)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
guard(spinlock_irqsave)(&prtd->lock);
prtd->bytes_received += count;
return count;
}
static int q6apm_dai_compr_set_params(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_params *params)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
struct q6apm_dai_data *pdata;
struct audioreach_module_config cfg;
struct snd_codec *codec = ¶ms->codec;
int dir = stream->direction;
int ret;
pdata = snd_soc_component_get_drvdata(component);
if (!pdata)
return -EINVAL;
prtd->periods = runtime->fragments;
prtd->pcm_count = runtime->fragment_size;
prtd->pcm_size = runtime->fragments * runtime->fragment_size;
prtd->bits_per_sample = 16;
if (prtd->next_track != true) {
memcpy(&prtd->codec, codec, sizeof(*codec));
ret = q6apm_set_real_module_id(component->dev, prtd->graph, codec->id);
if (ret)
return ret;
cfg.direction = dir;
cfg.sample_rate = codec->sample_rate;
cfg.num_channels = 2;
cfg.bit_width = prtd->bits_per_sample;
cfg.fmt = codec->id;
audioreach_set_default_channel_mapping(cfg.channel_map,
cfg.num_channels);
memcpy(&cfg.codec, codec, sizeof(*codec));
ret = q6apm_graph_media_format_shmem(prtd->graph, &cfg);
if (ret < 0)
return ret;
ret = q6apm_graph_media_format_pcm(prtd->graph, &cfg);
if (ret)
return ret;
ret = q6apm_map_memory_regions(prtd->graph, SNDRV_PCM_STREAM_PLAYBACK,
prtd->phys, (prtd->pcm_size / prtd->periods),
prtd->periods);
if (ret < 0)
return -ENOMEM;
ret = q6apm_graph_prepare(prtd->graph);
if (ret)
return ret;
ret = q6apm_graph_start(prtd->graph);
if (ret)
return ret;
} else {
cfg.direction = dir;
cfg.sample_rate = codec->sample_rate;
cfg.num_channels = 2;
cfg.bit_width = prtd->bits_per_sample;
cfg.fmt = codec->id;
memcpy(&cfg.codec, codec, sizeof(*codec));
ret = audioreach_compr_set_param(prtd->graph, &cfg);
if (ret < 0)
return ret;
}
prtd->state = Q6APM_STREAM_RUNNING;
return 0;
}
static int q6apm_dai_compr_set_metadata(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_metadata *metadata)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
int ret = 0;
switch (metadata->key) {
case SNDRV_COMPRESS_ENCODER_PADDING:
q6apm_remove_trailing_silence(component->dev, prtd->graph,
metadata->value[0]);
break;
case SNDRV_COMPRESS_ENCODER_DELAY:
q6apm_remove_initial_silence(component->dev, prtd->graph,
metadata->value[0]);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int q6apm_dai_compr_mmap(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct vm_area_struct *vma)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
struct device *dev = component->dev;
return dma_mmap_coherent(dev, vma, prtd->dma_buffer.area, prtd->dma_buffer.addr,
prtd->dma_buffer.bytes);
}
static int q6apm_compr_copy(struct snd_soc_component *component,
struct snd_compr_stream *stream, char __user *buf,
size_t count)
{
struct snd_compr_runtime *runtime = stream->runtime;
struct q6apm_dai_rtd *prtd = runtime->private_data;
void *dstn;
size_t copy;
u32 wflags = 0;
u32 app_pointer;
uint64_t bytes_received;
uint64_t temp_bytes_received;
uint32_t bytes_to_write;
uint64_t avail, bytes_in_flight = 0;
bytes_received = prtd->bytes_received;
temp_bytes_received = bytes_received;
if (prtd->next_track) {
bytes_received = ALIGN(prtd->bytes_received, prtd->pcm_count);
temp_bytes_received = bytes_received;
}
app_pointer = do_div(temp_bytes_received, prtd->pcm_size);
dstn = prtd->dma_buffer.area + app_pointer;
if (count < prtd->pcm_size - app_pointer) {
if (copy_from_user(dstn, buf, count))
return -EFAULT;
} else {
copy = prtd->pcm_size - app_pointer;
if (copy_from_user(dstn, buf, copy))
return -EFAULT;
if (copy_from_user(prtd->dma_buffer.area, buf + copy, count - copy))
return -EFAULT;
}
guard(spinlock_irqsave)(&prtd->lock);
bytes_in_flight = prtd->bytes_received - prtd->copied_total;
if (prtd->next_track) {
prtd->next_track = false;
prtd->copied_total = ALIGN(prtd->copied_total, prtd->pcm_count);
prtd->bytes_sent = ALIGN(prtd->bytes_sent, prtd->pcm_count);
}
prtd->bytes_received = bytes_received + count;
if (prtd->state == Q6APM_STREAM_RUNNING && (bytes_in_flight == 0)) {
bytes_to_write = prtd->pcm_count;
avail = prtd->bytes_received - prtd->bytes_sent;
if (avail < prtd->pcm_count)
bytes_to_write = avail;
q6apm_write_async(prtd->graph, bytes_to_write, 0, 0, wflags);
prtd->bytes_sent += bytes_to_write;
}
return count;
}
static const struct snd_compress_ops q6apm_dai_compress_ops = {
.open = q6apm_dai_compr_open,
.free = q6apm_dai_compr_free,
.get_caps = q6apm_dai_compr_get_caps,
.get_codec_caps = q6apm_dai_compr_get_codec_caps,
.pointer = q6apm_dai_compr_pointer,
.trigger = q6apm_dai_compr_trigger,
.ack = q6apm_dai_compr_ack,
.set_params = q6apm_dai_compr_set_params,
.set_metadata = q6apm_dai_compr_set_metadata,
.mmap = q6apm_dai_compr_mmap,
.copy = q6apm_compr_copy,
};
static const struct snd_soc_component_driver q6apm_fe_dai_component = {
.name = DRV_NAME,
.open = q6apm_dai_open,
.close = q6apm_dai_close,
.prepare = q6apm_dai_prepare,
.pcm_construct = q6apm_dai_pcm_new,
.hw_params = q6apm_dai_hw_params,
.pointer = q6apm_dai_pointer,
.trigger = q6apm_dai_trigger,
.ack = q6apm_dai_ack,
.compress_ops = &q6apm_dai_compress_ops,
.use_dai_pcm_id = true,
.remove_order = SND_SOC_COMP_ORDER_EARLY,
};
static int q6apm_dai_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct q6apm_dai_data *pdata;
struct of_phandle_args args;
int rc;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
rc = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args);
if (rc < 0)
pdata->sid = -1;
else
pdata->sid = args.args[0] & SID_MASK_DEFAULT;
dev_set_drvdata(dev, pdata);
return devm_snd_soc_register_component(dev, &q6apm_fe_dai_component, NULL, 0);
}
#ifdef CONFIG_OF
static const struct of_device_id q6apm_dai_device_id[] = {
{ .compatible = "qcom,q6apm-dais" },
{},
};
MODULE_DEVICE_TABLE(of, q6apm_dai_device_id);
#endif
static struct platform_driver q6apm_dai_platform_driver = {
.driver = {
.name = "q6apm-dai",
.of_match_table = of_match_ptr(q6apm_dai_device_id),
},
.probe = q6apm_dai_probe,
};
module_platform_driver(q6apm_dai_platform_driver);
MODULE_DESCRIPTION("Q6APM dai driver");
MODULE_LICENSE("GPL");
