static int atmel_ac97c_prepare_dma(struct atmel_ac97c *chip,
struct snd_pcm_substream *substream,
enum dma_transfer_direction direction)
{
struct dma_chan *chan;
struct dw_cyclic_desc *cdesc;
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long buffer_len, period_len;
/*
* We don't do DMA on "complex" transfers, i.e. with
* non-halfword-aligned buffers or lengths.
*/
if (runtime->dma_addr & 1 || runtime->buffer_size & 1) {
dev_dbg(&chip->pdev->dev, "too complex transfer\n");
return -EINVAL;
}
if (direction == DMA_MEM_TO_DEV)
chan = chip->dma.tx_chan;
else
chan = chip->dma.rx_chan;
buffer_len = frames_to_bytes(runtime, runtime->buffer_size);
period_len = frames_to_bytes(runtime, runtime->period_size);
cdesc = dw_dma_cyclic_prep(chan, runtime->dma_addr, buffer_len,
period_len, direction);
if (IS_ERR(cdesc)) {
dev_dbg(&chip->pdev->dev, "could not prepare cyclic DMA\n");
return PTR_ERR(cdesc);
}
if (direction == DMA_MEM_TO_DEV) {
cdesc->period_callback = atmel_ac97c_dma_playback_period_done;
set_bit(DMA_TX_READY, &chip->flags);
} else {
cdesc->period_callback = atmel_ac97c_dma_capture_period_done;
set_bit(DMA_RX_READY, &chip->flags);
}
cdesc->period_callback_param = chip;
return 0;
}
/* pointer callback */
static snd_pcm_uframes_t
snd_bcm2835_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct bcm2835_alsa_stream *alsa_stream = runtime->private_data;
audio_info(" .. IN\n");
audio_debug("pcm_pointer... (%d) hwptr=%d appl=%d pos=%d\n", 0,
frames_to_bytes(runtime, runtime->status->hw_ptr),
frames_to_bytes(runtime, runtime->control->appl_ptr),
alsa_stream->pos);
audio_info(" .. OUT\n");
return snd_pcm_indirect_playback_pointer(substream,
&alsa_stream->pcm_indirect,
alsa_stream->pos);
}
int tegra_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct tegra_runtime_data *prtd = runtime->private_data;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct tegra_pcm_dma_params * dmap;
unsigned long flags;
int i;
dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
if (!dmap)
return 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
prtd->dma_pos = 0;
prtd->dma_pos_end = frames_to_bytes(runtime, runtime->periods * runtime->period_size);
prtd->period_index = 0;
prtd->dma_req_idx = 0;
if (prtd->disable_intr) {
prtd->dma_req_count = 1;
prtd->dma_req[0].complete = NULL;
} else if (!prtd->dma_req[0].complete) {
prtd->dma_req[0].complete = dma_complete_callback;
prtd->dma_req_count =
(MAX_DMA_REQ_COUNT <= runtime->periods) ?
MAX_DMA_REQ_COUNT : runtime->periods;
}
/* Fall-through */
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
spin_lock_irqsave(&prtd->lock, flags);
prtd->running = 1;
spin_unlock_irqrestore(&prtd->lock, flags);
for (i = 0; i < prtd->dma_req_count; i++)
tegra_pcm_queue_dma(prtd);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
spin_lock_irqsave(&prtd->lock, flags);
prtd->running = 0;
spin_unlock_irqrestore(&prtd->lock, flags);
tegra_dma_cancel(prtd->dma_chan);
for (i = 0; i < prtd->dma_req_count; i++) {
if (prtd->dma_req[i].complete &&
(prtd->dma_req[i].status ==
-TEGRA_DMA_REQ_ERROR_ABORTED))
prtd->dma_req[i].complete(&prtd->dma_req[i]);
}
break;
default:
return -EINVAL;
}
return 0;
}
static int tegra_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct tegra_runtime_data *prtd = runtime->private_data;
unsigned long flags;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
prtd->dma_pos = 0;
prtd->dma_pos_end = frames_to_bytes(runtime, runtime->periods * runtime->period_size);
prtd->period_index = 0;
prtd->dma_req_idx = 0;
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
spin_lock_irqsave(&prtd->lock, flags);
prtd->running = 1;
#if 0
if( prtd->dma_chan ){
prtd->pcm_timeout_tick = jiffies;
del_timer(&prtd->pcm_timeout);
prtd->pcm_timeout.function = pcm_timeout_func;
prtd->pcm_timeout.expires = jiffies + msecs_to_jiffies((runtime->period_size/(runtime->rate/1000))*runtime->periods*2);
prtd->pcm_timeout.data = (unsigned long)prtd;
add_timer(&prtd->pcm_timeout);
prtd->callback_time = jiffies;
}
#endif
spin_unlock_irqrestore(&prtd->lock, flags);
if( prtd->dma_chan ){
tegra_pcm_queue_dma(prtd);
tegra_pcm_queue_dma(prtd);
}
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
spin_lock_irqsave(&prtd->lock, flags);
prtd->running = 0;
#if 0
if( prtd->dma_chan ){
del_timer(&prtd->pcm_timeout);
}
#endif
spin_unlock_irqrestore(&prtd->lock, flags);
if( prtd->dma_chan ){
tegra_dma_dequeue_req(prtd->dma_chan, &prtd->dma_req[0]);
tegra_dma_dequeue_req(prtd->dma_chan, &prtd->dma_req[1]);
}
break;
default:
return -EINVAL;
}
return 0;
}
static int i2sirx_i2so_mix_copy
(
struct snd_pcm_substream *substream,
int channel,
snd_pcm_uframes_t pos,
void __user *buf,
snd_pcm_uframes_t frames
)
{
__u8 *read_src;
__u32 size_bytes;
__u32 offset_bytes;
struct snd_pcm_runtime *runtime = substream->runtime;
if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream)
{
printk("%s,%d\n", __FUNCTION__, __LINE__);
}
else
{
offset_bytes = frames_to_bytes(runtime, pos);
read_src = i2sirx_i2so_mix_ring_base_get() + offset_bytes;
size_bytes = frames_to_bytes(runtime, frames);
/* For debug.
*/
if (1 == ali_alsa_i2sirx_i2so_mix_out_dump_en_get())
{
ali_alsa_dump_data("/data/data/ali_alsa_mix_out_dump.pcm", read_src,
size_bytes);
}
if (copy_to_user(buf, read_src, size_bytes))
{
printk("%s,%d\n", __FUNCTION__, __LINE__);
return(-EFAULT);
}
}
return 0;
}
/*
* prepare playback/capture channel
*/
static int snd_nm256_pcm_prepare(snd_pcm_substream_t *substream)
{
nm256_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
snd_assert(s, return -ENXIO);
s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
s->periods = substream->runtime->periods;
s->cur_period = 0;
spin_lock_irq(&chip->reg_lock);
s->running = 0;
snd_nm256_set_format(chip, s, substream);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
static void
do_filter_regions (sw_sample * sample, SweepFilterRegion func,
sw_param_set pset, gpointer custom_data)
{
sw_sounddata * sounddata = sample->sounddata;
sw_format * f = sounddata->format;
GList * gl;
sw_sel * sel;
sw_framecount_t sel_total, run_total;
sw_framecount_t offset, remaining, n;
gpointer d;
gint percent;
gboolean active = TRUE;
sel_total = sounddata_selection_nr_frames (sounddata) / 100;
if (sel_total == 0) sel_total = 1;
run_total = 0;
for (gl = sounddata->sels; active && gl; gl = gl->next) {
sel = (sw_sel *)gl->data;
offset = 0;
remaining = sel->sel_end - sel->sel_start;
while (active && remaining > 0) {
g_mutex_lock (&sample->ops_mutex);
if (sample->edit_state == SWEEP_EDIT_STATE_CANCEL) {
active = FALSE;
} else {
d = sounddata->data + (int)frames_to_bytes (f, sel->sel_start + offset);
n = MIN(remaining, 1024);
func (d, sounddata->format, n, pset, custom_data);
remaining -= n;
offset += n;
run_total += n;
percent = run_total / sel_total;
sample_set_progress_percent (sample, percent);
#ifdef DEBUG
g_print ("completed %d / %d frames, %d%%\n", run_total, sel_total,
percent);
#endif
}
g_mutex_unlock (&sample->ops_mutex);
}
}
}
/*
* prepare playback/capture channel
*/
static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream)
{
struct nm256 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct nm256_stream *s = runtime->private_data;
if (snd_BUG_ON(!s))
return -ENXIO;
s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
s->periods = substream->runtime->periods;
s->cur_period = 0;
spin_lock_irq(&chip->reg_lock);
s->running = 0;
snd_nm256_set_format(chip, s, substream);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
static void read_in_urb_mode3(struct snd_usb_caiaqdev *dev,
const struct urb *urb,
const struct usb_iso_packet_descriptor *iso)
{
unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
int stream, i;
/* paranoia check */
if (iso->actual_length % (BYTES_PER_SAMPLE_USB * CHANNELS_PER_STREAM))
return;
for (i = 0; i < iso->actual_length;) {
for (stream = 0; stream < dev->n_streams; stream++) {
struct snd_pcm_substream *sub = dev->sub_capture[stream];
char *audio_buf = NULL;
int c, n, sz = 0;
if (sub && !dev->input_panic) {
struct snd_pcm_runtime *rt = sub->runtime;
audio_buf = rt->dma_area;
sz = frames_to_bytes(rt, rt->buffer_size);
}
for (c = 0; c < CHANNELS_PER_STREAM; c++) {
/* 3 audio data bytes, followed by 1 check byte */
if (audio_buf) {
for (n = 0; n < BYTES_PER_SAMPLE; n++) {
audio_buf[dev->audio_in_buf_pos[stream]++] = usb_buf[i+n];
if (dev->audio_in_buf_pos[stream] == sz)
dev->audio_in_buf_pos[stream] = 0;
}
dev->period_in_count[stream] += BYTES_PER_SAMPLE;
}
i += BYTES_PER_SAMPLE;
if (usb_buf[i] != ((stream << 1) | c) &&
!dev->first_packet) {
if (!dev->input_panic)
printk(" EXPECTED: %02x got %02x, c %d, stream %d, i %d\n",
((stream << 1) | c), usb_buf[i], c, stream, i);
dev->input_panic = 1;
}
i++;
}
}
}
if (dev->first_packet > 0)
dev->first_packet--;
}
static int davinci_pcm_copy(struct snd_pcm_substream *substream, int channel,
snd_pcm_uframes_t hwoff, void __user *buf, snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
if (copy_from_user(local_buffer + hwoff, buf,
frames_to_bytes(runtime, frames))) {
printk(KERN_ERR "ERROR COPY_FROM_USER\n");
return -EFAULT;
}
return 0;
}
static int snd_pcm_silence(snd_pcm_substream_t *substream, int channel,
snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
{
snd_pcm_runtime_t *runtime = substream->runtime;
unsigned char * TempWriteLevel;
pcm_hw_t *chip = snd_pcm_substream_chip(substream);
char *hwbuf;
int totalbytes;
if(channel != -1)
return -EINVAL;
hwbuf = runtime->dma_area + frames_to_bytes(runtime, pos);
totalbytes = frames_to_bytes(runtime, count);
chip->NumberOfBytesCopied += totalbytes;
snd_pcm_format_set_silence(runtime->format, hwbuf, totalbytes);
/*Update Write Pointer STAPI WORK */
DEBUG_PRINT(("Silence \n"));
DEBUG_PRINT(("Current Write Ptr=%x, Size =%d \n", chip->WritePointer, (count *runtime->channels)));
TempWriteLevel = chip->WritePointer + (count *runtime->channels);
if((U32)TempWriteLevel>(runtime->dma_addr +runtime->dma_bytes))
{
U32 MaxAllowedWritePointer = (U32)runtime->dma_addr +(U32)runtime->dma_bytes;
U32 Diff;
U32 RemainingBytes;
Diff = (U32)MaxAllowedWritePointer - (U32)chip->WritePointer;
RemainingBytes = count *runtime->channels - Diff;
chip->WritePointer = chip->WritePointer + RemainingBytes;
}
else
{
chip->WritePointer = TempWriteLevel;
}
DEBUG_PRINT(("Updated Write Ptr=%x \n", chip->WritePointer));
return 0;
}
static int saudio_data_trigger_process(struct saudio_stream *stream,
struct saudio_msg *msg)
{
int32_t result = 0;
struct sblock blk = { 0 };
struct cmd_common *common = NULL;
struct snd_pcm_runtime *runtime = stream->substream->runtime;
ADEBUG();
if (stream->stream_id == SNDRV_PCM_STREAM_PLAYBACK) {
stream->periods_avail = snd_pcm_playback_avail(runtime) /
runtime->period_size;
} else {
stream->periods_avail = snd_pcm_capture_avail(runtime) /
runtime->period_size;
}
pr_debug("saudio.c:stream->periods_avail is %d,block count is %d",
stream->periods_avail, sblock_get_free_count(stream->dst,
stream->channel));
stream->periods_tosend = runtime->periods - stream->periods_avail;
ADEBUG();
while (stream->periods_tosend) {
result = sblock_get(stream->dst, stream->channel, &blk, 0);
if (result) {
break;
}
stream->last_getblk_count++;
common = (struct cmd_common *)blk.addr;
blk.length = frames_to_bytes(runtime, runtime->period_size);
common->command = SAUDIO_DATA_PCM;
common->sub_cmd = stream->stream_id;
common->reserved1 =
stream->substream->dma_buffer.addr +
stream->period * blk.length;
sblock_send(stream->dst, stream->channel, &blk);
stream->period++;
stream->period = stream->period % runtime->periods;
stream->periods_tosend--;
}
pr_debug(":sblock_getblock_count trigger is %d \n",
stream->last_getblk_count);
return result;
}
cubeb_resampler_speex::cubeb_resampler_speex(SpeexResamplerState * r,
cubeb_stream * s,
cubeb_stream_params params,
uint32_t out_rate,
cubeb_data_callback cb,
long max_count,
void * ptr)
: speex_resampler(r)
, stream(s)
, stream_params(params)
, data_callback(cb)
, user_ptr(ptr)
, buffer_frame_count(max_count)
, resampling_ratio(static_cast<float>(params.rate) / out_rate)
, leftover_frame_size(static_cast<uint32_t>(ceilf(1 / resampling_ratio * 2) + 1))
, leftover_frame_count(0)
, leftover_frames_buffer(auto_array<uint8_t>(frames_to_bytes(params, leftover_frame_size)))
, resampling_src_buffer(auto_array<uint8_t>(frames_to_bytes(params,
frame_count_at_rate(buffer_frame_count, resampling_ratio))))
{
assert(r);
}
static int snd_bcm2835_pcm_copy(struct snd_pcm_substream *substream,
int channel, snd_pcm_uframes_t pos, void *src,
snd_pcm_uframes_t count)
{
int ret;
struct snd_pcm_runtime *runtime = substream->runtime;
bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
audio_info(" .. IN\n");
audio_debug("copy.......... (%d) hwptr=%d appl=%d pos=%d\n",
frames_to_bytes(runtime, count), frames_to_bytes(runtime,
runtime->
status->
hw_ptr),
frames_to_bytes(runtime, runtime->control->appl_ptr),
alsa_stream->pos);
ret =
bcm2835_audio_write(alsa_stream, frames_to_bytes(runtime, count),
src);
audio_info(" .. OUT\n");
return ret;
}
static int loopback_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct loopback_pcm *dpcm = runtime->private_data;
struct loopback_cable *cable = dpcm->cable;
int bps, salign;
salign = (snd_pcm_format_width(runtime->format) *
runtime->channels) / 8;
bps = salign * runtime->rate;
if (bps <= 0 || salign <= 0)
return -EINVAL;
dpcm->buf_pos = 0;
dpcm->pcm_buffer_size = frames_to_bytes(runtime, runtime->buffer_size);
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
dpcm->silent_size = dpcm->pcm_buffer_size;
snd_pcm_format_set_silence(runtime->format, runtime->dma_area,
runtime->buffer_size * runtime->channels);
}
dpcm->irq_pos = 0;
dpcm->period_update_pending = 0;
dpcm->pcm_bps = bps;
dpcm->pcm_salign = salign;
dpcm->pcm_period_size = frames_to_bytes(runtime, runtime->period_size);
mutex_lock(&dpcm->loopback->cable_lock);
if (!(cable->valid & ~(1 << substream->stream)) ||
(get_setup(dpcm)->notify &&
substream->stream == SNDRV_PCM_STREAM_PLAYBACK))
params_change(substream);
cable->valid |= 1 << substream->stream;
mutex_unlock(&dpcm->loopback->cable_lock);
return 0;
}
static snd_pcm_uframes_t snd_card_saudio_pcm_pointer(struct snd_pcm_substream
*substream)
{
const struct snd_saudio *saudio = snd_pcm_substream_chip(substream);
const int stream_id = substream->pstr->stream;
const int dev = substream->pcm->device;
struct snd_pcm_runtime *runtime = substream->runtime;
struct saudio_stream *stream =
(struct saudio_stream *)&(saudio->dev_ctrl[dev].stream[stream_id]);
unsigned int offset;
offset =
stream->hwptr_done * frames_to_bytes(runtime, runtime->period_size);
return bytes_to_frames(runtime, offset);
}
static snd_pcm_uframes_t
vaudio_snd_pointer (struct snd_pcm_substream* substream)
{
const NkVaudio chip = snd_pcm_substream_chip(substream);
const int stream_id = substream->pstr->stream;
const int dev = substream->pcm->device;
struct vaudio_stream* s = &chip->s[dev][stream_id];
struct snd_pcm_runtime* runtime = substream->runtime;
unsigned int offset;
ADEBUG();
offset = s->hwptr_done * frames_to_bytes(runtime, runtime->period_size);
return bytes_to_frames(runtime, offset);
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++
*
* Function Name: PcmPlaybackPrepare
*
* Description: Prepare PCM playback device, next call is Trigger or Close
*
*------------------------------------------------------------
*/
static int PcmPlaybackPrepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
brcm_alsa_chip_t *chip = snd_pcm_substream_chip(substream);
BRCM_AUDIO_Param_Prepare_t parm_prepare;
aTrace(LOG_ALSA_INTERFACE, "ALSA-CAPH playback_prepare "
"stream=%d period=%d period_size=%d,"
"bufsize=%d start_threshold=%ld stop_threshold=%ld"
" frame_bits %d rate=%d ch=%d\n",
substream->number, (int)runtime->periods,
(int)runtime->period_size, (int)runtime->buffer_size,
runtime->start_threshold, runtime->stop_threshold,
runtime->frame_bits, runtime->rate, runtime->channels);
chip->streamCtl[substream->number].stream_hw_ptr = 0;
parm_prepare.drv_handle = substream->runtime->private_data;
parm_prepare.cbParams.pfCallBack = AUDIO_DRIVER_InterruptPeriodCB;
parm_prepare.cbParams.pPrivateData = (void *)substream;
parm_prepare.period_count = runtime->periods;
parm_prepare.period_bytes =
frames_to_bytes(runtime, runtime->period_size);
parm_prepare.buf_param.buf_size = runtime->dma_bytes;
/*virtual address */
parm_prepare.buf_param.pBuf = runtime->dma_area;
/* physical address */
parm_prepare.buf_param.phy_addr = (UInt32) (runtime->dma_addr);
aTrace(LOG_ALSA_INTERFACE, "buf_size = %d pBuf=0x%lx phy_addr=0x%x\n",
runtime->dma_bytes, (UInt32) runtime->dma_area,
runtime->dma_addr);
parm_prepare.drv_config.sample_rate = runtime->rate;
parm_prepare.drv_config.num_channel = runtime->channels;
parm_prepare.drv_config.bits_per_sample = 16;
parm_prepare.drv_config.instanceId = substream->number;
parm_prepare.drv_config.arm2sp_mixMode =
chip->pi32SpeechMixOption[substream->number];
parm_prepare.stream = substream->number;
AUDIO_Ctrl_Trigger(ACTION_AUD_SetPrePareParameters, &parm_prepare, NULL,
0);
/*
DEBUG("\n%lx:playback_prepare period bytes=%d,
periods =%d, buffersize=%d\n",jiffies,
g_brcm_alsa_chip->period_bytes[0], runtime->periods,
runtime->dma_bytes);
*/
return 0;
}
static int atmel_abdac_prepare_dma(struct atmel_abdac *dac,
struct snd_pcm_substream *substream,
enum dma_data_direction direction)
{
struct dma_chan *chan = dac->dma.chan;
struct dw_cyclic_desc *cdesc;
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long buffer_len, period_len;
/*
* We don't do DMA on "complex" transfers, i.e. with
* non-halfword-aligned buffers or lengths.
*/
if (runtime->dma_addr & 1 || runtime->buffer_size & 1) {
dev_dbg(&dac->pdev->dev, "too complex transfer\n");
return -EINVAL;
}
buffer_len = frames_to_bytes(runtime, runtime->buffer_size);
period_len = frames_to_bytes(runtime, runtime->period_size);
cdesc = dw_dma_cyclic_prep(chan, runtime->dma_addr, buffer_len,
period_len, DMA_TO_DEVICE);
if (IS_ERR(cdesc)) {
dev_dbg(&dac->pdev->dev, "could not prepare cyclic DMA\n");
return PTR_ERR(cdesc);
}
cdesc->period_callback = atmel_abdac_dma_period_done;
cdesc->period_callback_param = dac;
dac->dma.cdesc = cdesc;
set_bit(DMA_READY, &dac->flags);
return 0;
}
static int bf5xx_pcm_silence(struct snd_pcm_substream *substream,
int channel, snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int sample_size = runtime->sample_bits / 8;
void *buf = runtime->dma_area;
struct bf5xx_i2s_pcm_data *dma_data;
unsigned int offset, size;
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
if (dma_data->tdm_mode) {
offset = pos * 8 * sample_size;
size = count * 8 * sample_size;
} else {
offset = frames_to_bytes(runtime, pos);
size = frames_to_bytes(runtime, count);
}
snd_pcm_format_set_silence(runtime->format, buf + offset, size);
return 0;
}
static inline void play_buffer_done (void *arg)
{
struct snd_pcm_substream *substream = (struct snd_pcm_substream *)arg;
struct snd_pcm_runtime *runtime = substream->runtime;
struct pcm_runtime_data *prtd = substream->runtime->private_data;
int size, period_offset, rtbuffersize;
rtbuffersize = frames_to_bytes(runtime, runtime->buffer_size);
down(&prtd->buf_done_sem);
if ((frames_to_bytes(runtime, prtd->cur_pos) +
TEGRA_DEFAULT_BUFFER_SIZE) > rtbuffersize) {
size = rtbuffersize -
frames_to_bytes(runtime, prtd->cur_pos);
} else {
size = TEGRA_DEFAULT_BUFFER_SIZE;
}
prtd->cur_pos += bytes_to_frames(runtime, size);
if (prtd->cur_pos < prtd->last_pos) {
period_offset = (runtime->buffer_size +
prtd->cur_pos) - prtd->last_pos;
} else {
period_offset = prtd->cur_pos - prtd->last_pos;
}
if (period_offset >= runtime->period_size) {
prtd->last_pos = prtd->cur_pos;
snd_pcm_period_elapsed(substream);
}
if (prtd->cur_pos >= runtime->buffer_size) {
prtd->cur_pos -= runtime->buffer_size;
}
}
int PcmPlaybackSilence(struct snd_pcm_substream *substream, int channel,
snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
{
struct snd_pcm_runtime *runtime = substream->runtime;
char *hwbuf = runtime->dma_area + frames_to_bytes(runtime, pos);
snd_pcm_format_set_silence(runtime->format, hwbuf,
count * runtime->channels);
/**
* Set DMA engine ready bit according to pos and count
*/
aTrace(LOG_ALSA_INTERFACE, "%s: stream = %d, Called\n",
__func__, substream->number);
return 0;
}
static irqreturn_t mxs_pcm_dma_irq(int irq, void *dev_id)
{
struct snd_pcm_substream *substream = dev_id;
struct snd_pcm_runtime *runtime = substream->runtime;
struct mxs_runtime_data *prtd = substream->runtime->private_data;
struct mxs_dma_info dma_info;
void *pdma;
unsigned long prev_appl_offset, appl_count, cont, appl_ptr_bytes;
mxs_dma_get_info(prtd->dma_ch, &dma_info);
if (dma_info.status) {
printk(KERN_WARNING "%s: DMA audio channel %d (%s) error\n",
__func__, prtd->params->dma_ch, prtd->params->name);
mxs_dma_ack_irq(prtd->dma_ch);
} else {
if ((prtd->params->dma_ch == MXS_DMA_CHANNEL_AHB_APBX_SPDIF) &&
(substream->stream == SNDRV_PCM_STREAM_PLAYBACK) &&
(runtime->access == SNDRV_PCM_ACCESS_MMAP_INTERLEAVED) &&
((prtd->format == SNDRV_PCM_FORMAT_S24_LE)
|| (prtd->format == SNDRV_PCM_FORMAT_S20_3LE))) {
appl_ptr_bytes =
frames_to_bytes(runtime,
runtime->control->appl_ptr);
appl_count = appl_ptr_bytes - prtd->appl_ptr_bytes;
prev_appl_offset =
prtd->appl_ptr_bytes % prtd->dma_totsize;
cont = prtd->dma_totsize - prev_appl_offset;
if (appl_count > cont) {
pdma = runtime->dma_area + prev_appl_offset;
memmove(pdma + 1, pdma, cont - 1);
pdma = runtime->dma_area;
memmove(pdma + 1, pdma, appl_count - cont - 1);
} else {
pdma = runtime->dma_area + prev_appl_offset;
memmove(pdma + 1, pdma, appl_count - 1);
}
prtd->appl_ptr_bytes = appl_ptr_bytes;
}
mxs_dma_ack_irq(prtd->dma_ch);
snd_pcm_period_elapsed(substream);
}
return IRQ_HANDLED;
}
/* prepare playback callback */
static int snd_p16v_pcm_prepare_playback(snd_pcm_substream_t *substream)
{
emu10k1_t *emu = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
int channel = substream->pcm->device - emu->p16v_device_offset;
u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
int i;
u32 tmp;
//snd_printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, periods=%u, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, runtime->periods, frames_to_bytes(runtime, 1));
//snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
//snd_printk("dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",emu->p16v_buffer.addr, emu->p16v_buffer.area, emu->p16v_buffer.bytes);
tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
switch (runtime->rate) {
case 44100:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
break;
case 96000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
break;
case 192000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
break;
case 48000:
default:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
break;
}
/* FIXME: Check emu->buffer.size before actually writing to it. */
for(i=0; i < runtime->periods; i++) {
table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
table_base[(i*2)+1]=period_size_bytes<<16;
}
snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
return 0;
}
static u32 hsw_notify_pointer(struct sst_hsw_stream *stream, void *data)
{
struct hsw_pcm_data *pcm_data = data;
struct snd_pcm_substream *substream = pcm_data->substream;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
u32 pos;
pos = frames_to_bytes(runtime,
(runtime->control->appl_ptr % runtime->buffer_size));
dev_dbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
/* let alsa know we have play a period */
snd_pcm_period_elapsed(substream);
return pos;
}
static snd_pcm_uframes_t hsw_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
struct sst_hsw *hsw = pdata->hsw;
snd_pcm_uframes_t offset;
offset = bytes_to_frames(runtime,
sst_hsw_get_dsp_position(hsw, pcm_data->stream));
dev_dbg(rtd->dev, "PCM: DMA pointer %zu bytes\n",
frames_to_bytes(runtime, (u32)offset));
return offset;
}
static void audio_dma_irq(void *data)
{
struct snd_pcm_substream *substream = (struct snd_pcm_substream *)data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct mxc_runtime_data *prtd = runtime->private_data;
prtd->dma_active = 0;
prtd->periods++;
prtd->periods %= runtime->periods;
dbg("irq per %d offset %x\n", prtd->periods,
frames_to_bytes(runtime, runtime->period_size) * prtd->periods);
if (prtd->active)
snd_pcm_period_elapsed(substream);
dma_new_period(substream);
}
static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
const struct urb *urb,
const struct usb_iso_packet_descriptor *iso)
{
unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
unsigned char check_byte;
struct snd_pcm_substream *sub;
int stream, i;
for (i = 0; i < iso->actual_length;) {
if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
for (stream = 0;
stream < dev->n_streams;
stream++, i++) {
if (dev->first_packet)
continue;
check_byte = MAKE_CHECKBYTE(dev, stream, i);
if ((usb_buf[i] & 0x3f) != check_byte)
dev->input_panic = 1;
if (usb_buf[i] & 0x80)
dev->output_panic = 1;
}
}
dev->first_packet = 0;
for (stream = 0; stream < dev->n_streams; stream++, i++) {
sub = dev->sub_capture[stream];
if (dev->input_panic)
usb_buf[i] = 0;
if (sub) {
struct snd_pcm_runtime *rt = sub->runtime;
char *audio_buf = rt->dma_area;
int sz = frames_to_bytes(rt, rt->buffer_size);
audio_buf[dev->audio_in_buf_pos[stream]++] =
usb_buf[i];
dev->period_in_count[stream]++;
if (dev->audio_in_buf_pos[stream] == sz)
dev->audio_in_buf_pos[stream] = 0;
}
}
}
}
static int dma_new_period(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct mxc_runtime_data *prtd = runtime->private_data;
unsigned int dma_size = frames_to_bytes(runtime, runtime->period_size);
unsigned int offset = dma_size * prtd->period;
int ret = 0;
mxc_dma_requestbuf_t sdma_request;
if (!prtd->active)
return 0;
memset(&sdma_request, 0, sizeof(mxc_dma_requestbuf_t));
dbg("period pos ALSA %x DMA %x\n", runtime->periods, prtd->period);
dbg("period size ALSA %x DMA %x Offset %x dmasize %x\n",
(unsigned int)runtime->period_size,
runtime->dma_bytes, offset, dma_size);
dbg("DMA addr %x\n", runtime->dma_addr + offset);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
sdma_request.src_addr =
(dma_addr_t) (runtime->dma_addr + offset);
else
sdma_request.dst_addr =
(dma_addr_t) (runtime->dma_addr + offset);
sdma_request.num_of_bytes = dma_size;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
mxc_dma_config(prtd->dma_wchannel,
&sdma_request, 1, MXC_DMA_MODE_WRITE);
ret = mxc_dma_enable(prtd->dma_wchannel);
} else {
mxc_dma_config(prtd->dma_wchannel,
&sdma_request, 1, MXC_DMA_MODE_READ);
ret = mxc_dma_enable(prtd->dma_wchannel);
}
prtd->dma_active = 1;
prtd->period++;
prtd->period %= runtime->periods;
return ret;
}
static irqreturn_t bcm2835_playback_fifo_irq(int irq, void *dev_id)
{
bcm2835_alsa_stream_t *alsa_stream = (bcm2835_alsa_stream_t *) dev_id;
uint32_t consumed = 0;
int new_period = 0;
audio_info(" .. IN\n");
audio_info("alsa_stream=%p substream=%p\n", alsa_stream,
alsa_stream ? alsa_stream->substream : 0);
if (alsa_stream->open)
consumed = bcm2835_audio_retrieve_buffers(alsa_stream);
/* We get called only if playback was triggered, So, the number of buffers we retrieve in
* each iteration are the buffers that have been played out already
*/
if (alsa_stream->period_size) {
if ((alsa_stream->pos / alsa_stream->period_size) !=
((alsa_stream->pos + consumed) / alsa_stream->period_size))
new_period = 1;
}
audio_debug("updating pos cur: %d + %d max:%d period_bytes:%d, hw_ptr: %d new_period:%d\n",
alsa_stream->pos,
consumed,
alsa_stream->buffer_size,
(int)(alsa_stream->period_size*alsa_stream->substream->runtime->periods),
frames_to_bytes(alsa_stream->substream->runtime, alsa_stream->substream->runtime->status->hw_ptr),
new_period);
if (alsa_stream->buffer_size) {
alsa_stream->pos += consumed &~ (1<<30);
alsa_stream->pos %= alsa_stream->buffer_size;
}
if (alsa_stream->substream) {
if (new_period)
snd_pcm_period_elapsed(alsa_stream->substream);
} else {
audio_warning(" unexpected NULL substream\n");
}
audio_info(" .. OUT\n");
return IRQ_HANDLED;
}