static int mixart_monitor_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_mixart *chip = snd_kcontrol_chip(kcontrol);
int changed = 0;
int i;
mutex_lock(&chip->mgr->mixer_mutex);
for(i=0; i<2; i++) {
if(chip->monitoring_active[i] != ucontrol->value.integer.value[i]) {
chip->monitoring_active[i] = ucontrol->value.integer.value[i];
changed |= (1<<i); /* mask 0x01 ans 0x02 */
}
}
if(changed) {
/* allocate or release resources for monitoring */
int allocate = chip->monitoring_active[0] || chip->monitoring_active[1];
if(allocate) {
snd_mixart_add_ref_pipe( chip, MIXART_PCM_ANALOG, 0, 1); /* allocate the playback pipe for monitoring */
snd_mixart_add_ref_pipe( chip, MIXART_PCM_ANALOG, 1, 1); /* allocate the capture pipe for monitoring */
}
if(changed & 0x01) mixart_update_monitoring(chip, 0);
if(changed & 0x02) mixart_update_monitoring(chip, 1);
if(!allocate) {
snd_mixart_kill_ref_pipe( chip->mgr, &chip->pipe_in_ana, 1); /* release the capture pipe for monitoring */
snd_mixart_kill_ref_pipe( chip->mgr, &chip->pipe_out_ana, 1); /* release the playback pipe for monitoring */
}
}
mutex_unlock(&chip->mgr->mixer_mutex);
return (changed != 0);
}
int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
struct mixart_pipe *pipe, int monitoring)
{
int err = 0;
if(pipe->status == PIPE_UNDEFINED)
return 0;
if(monitoring)
pipe->monitoring = 0;
else
pipe->references--;
if((pipe->references <= 0) && (pipe->monitoring == 0)) {
struct mixart_msg request;
struct mixart_delete_group_resp delete_resp;
/* release the clock */
err = mixart_set_clock( mgr, pipe, 0);
if( err < 0 ) {
snd_printk(KERN_ERR "mixart_set_clock(0) return error!\n");
}
/* stop the pipe */
err = mixart_set_pipe_state(mgr, pipe, 0);
if( err < 0 ) {
snd_printk(KERN_ERR "error stopping pipe!\n");
}
request.message_id = MSG_STREAM_DELETE_GROUP;
request.uid = (struct mixart_uid){0,0};
request.data = &pipe->group_uid; /* the streaming group ! */
request.size = sizeof(pipe->group_uid);
/* delete the pipe */
err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
if ((err < 0) || (delete_resp.status != 0)) {
snd_printk(KERN_ERR "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n", err, delete_resp.status);
}
pipe->group_uid = (struct mixart_uid){0,0};
pipe->stream_count = 0;
pipe->status = PIPE_UNDEFINED;
}
return err;
}
static int mixart_set_stream_state(struct mixart_stream *stream, int start)
{
struct snd_mixart *chip;
struct mixart_stream_state_req stream_state_req;
struct mixart_msg request;
if(!stream->substream)
return -EINVAL;
memset(&stream_state_req, 0, sizeof(stream_state_req));
stream_state_req.stream_count = 1;
stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
else
request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
request.uid = (struct mixart_uid){0,0};
request.data = &stream_state_req;
request.size = sizeof(stream_state_req);
stream->abs_period_elapsed = 0; /* reset stream pos */
stream->buf_periods = 0;
stream->buf_period_frag = 0;
chip = snd_pcm_substream_chip(stream->substream);
return snd_mixart_send_msg_nonblock(chip->mgr, &request);
}
/*
* Trigger callback
*/
static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
{
struct mixart_stream *stream = subs->runtime->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
snd_printdd("SNDRV_PCM_TRIGGER_START\n");
/* START_STREAM */
if( mixart_set_stream_state(stream, 1) )
return -EINVAL;
stream->status = MIXART_STREAM_STATUS_RUNNING;
break;
case SNDRV_PCM_TRIGGER_STOP:
/* STOP_STREAM */
if( mixart_set_stream_state(stream, 0) )
return -EINVAL;
stream->status = MIXART_STREAM_STATUS_OPEN;
snd_printdd("SNDRV_PCM_TRIGGER_STOP\n");
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
/* TODO */
stream->status = MIXART_STREAM_STATUS_PAUSE;
snd_printdd("SNDRV_PCM_PAUSE_PUSH\n");
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
/* TODO */
stream->status = MIXART_STREAM_STATUS_RUNNING;
snd_printdd("SNDRV_PCM_PAUSE_RELEASE\n");
break;
default:
return -EINVAL;
}
return 0;
}
static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
{
unsigned long timeout = jiffies + HZ;
while (atomic_read(&mgr->msg_processed) > 0) {
if (time_after(jiffies, timeout)) {
snd_printk(KERN_ERR "mixart: cannot process nonblock events!\n");
return -EBUSY;
}
schedule_timeout_uninterruptible(1);
}
return 0;
}
/*
* prepare callback for all pcms
*/
static int snd_mixart_prepare(struct snd_pcm_substream *subs)
{
struct snd_mixart *chip = snd_pcm_substream_chip(subs);
struct mixart_stream *stream = subs->runtime->private_data;
/* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
snd_printdd("snd_mixart_prepare\n");
mixart_sync_nonblock_events(chip->mgr);
/* only the first stream can choose the sample rate */
/* the further opened streams will be limited to its frequency (see open) */
if(chip->mgr->ref_count_rate == 1)
chip->mgr->sample_rate = subs->runtime->rate;
/* set the clock only once (first stream) on the same pipe */
if(stream->pipe->references == 1) {
if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
return -EINVAL;
}
return 0;
}
static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
{
int err;
struct snd_mixart *chip;
struct mixart_msg request;
struct mixart_stream_param_desc stream_param;
struct mixart_return_uid resp;
chip = snd_pcm_substream_chip(stream->substream);
memset(&stream_param, 0, sizeof(stream_param));
stream_param.coding_type = CT_LINEAR;
stream_param.number_of_channel = stream->channels;
stream_param.sampling_freq = chip->mgr->sample_rate;
if(stream_param.sampling_freq == 0)
stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
switch(format){
case SNDRV_PCM_FORMAT_U8:
stream_param.sample_type = ST_INTEGER_8;
stream_param.sample_size = 8;
break;
case SNDRV_PCM_FORMAT_S16_LE:
stream_param.sample_type = ST_INTEGER_16LE;
stream_param.sample_size = 16;
break;
case SNDRV_PCM_FORMAT_S16_BE:
stream_param.sample_type = ST_INTEGER_16BE;
stream_param.sample_size = 16;
break;
case SNDRV_PCM_FORMAT_S24_3LE:
stream_param.sample_type = ST_INTEGER_24LE;
stream_param.sample_size = 24;
break;
case SNDRV_PCM_FORMAT_S24_3BE:
stream_param.sample_type = ST_INTEGER_24BE;
stream_param.sample_size = 24;
break;
case SNDRV_PCM_FORMAT_FLOAT_LE:
stream_param.sample_type = ST_FLOATING_POINT_32LE;
stream_param.sample_size = 32;
break;
case SNDRV_PCM_FORMAT_FLOAT_BE:
stream_param.sample_type = ST_FLOATING_POINT_32BE;
stream_param.sample_size = 32;
break;
default:
snd_printk(KERN_ERR "error mixart_set_format() : unknown format\n");
return -EINVAL;
}
snd_printdd("set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
/* TODO: what else to configure ? */
/* stream_param.samples_per_frame = 2; */
/* stream_param.bytes_per_frame = 4; */
/* stream_param.bytes_per_sample = 2; */
stream_param.pipe_count = 1; /* set to 1 */
stream_param.stream_count = 1; /* set to 1 */
stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
stream_param.stream_desc[0].stream_idx = stream->substream->number;
request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
request.uid = (struct mixart_uid){0,0};
request.data = &stream_param;
request.size = sizeof(stream_param);
err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
if((err < 0) || resp.error_code) {
snd_printk(KERN_ERR "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n", err, resp.error_code);
return -EINVAL;
}
return 0;
}
/*
* HW_PARAMS callback for all pcms
*/
static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
struct snd_pcm_hw_params *hw)
{
struct snd_mixart *chip = snd_pcm_substream_chip(subs);
struct mixart_mgr *mgr = chip->mgr;
struct mixart_stream *stream = subs->runtime->private_data;
snd_pcm_format_t format;
int err;
int channels;
/* set up channels */
channels = params_channels(hw);
/* set up format for the stream */
format = params_format(hw);
mutex_lock(&mgr->setup_mutex);
/* update the stream levels */
if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
mixart_update_playback_stream_level(chip, is_aes, subs->number);
else
mixart_update_capture_stream_level( chip, is_aes);
}
stream->channels = channels;
/* set the format to the board */
err = mixart_set_format(stream, format);
if(err < 0) {
mutex_unlock(&mgr->setup_mutex);
return err;
}
/* allocate buffer */
err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
if (err > 0) {
struct mixart_bufferinfo *bufferinfo;
int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
}
bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
bufferinfo[i].buffer_address = subs->runtime->dma_addr;
bufferinfo[i].available_length = subs->runtime->dma_bytes;
/* bufferinfo[i].buffer_id is already defined */
snd_printdd("snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n", i,
bufferinfo[i].buffer_address,
bufferinfo[i].available_length,
subs->number);
}
mutex_unlock(&mgr->setup_mutex);
return err;
}
static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
{
struct snd_mixart *chip = snd_pcm_substream_chip(subs);
snd_pcm_lib_free_pages(subs);
mixart_sync_nonblock_events(chip->mgr);
return 0;
}
/*
* TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
*/
static struct snd_pcm_hardware snd_mixart_analog_caps =
{
.info = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE),
.formats = ( SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
.rate_min = 8000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 256, /* 256 frames U8 mono*/
.period_bytes_max = (16*1024),
.periods_min = 2,
.periods_max = (32*1024/256),
};
static struct snd_pcm_hardware snd_mixart_digital_caps =
{
.info = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE),
.formats = ( SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
.rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
.rate_min = 32000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 256, /* 256 frames U8 mono*/
.period_bytes_max = (16*1024),
.periods_min = 2,
.periods_max = (32*1024/256),
};
static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
{
struct snd_mixart *chip = snd_pcm_substream_chip(subs);
struct mixart_mgr *mgr = chip->mgr;
struct snd_pcm_runtime *runtime = subs->runtime;
struct snd_pcm *pcm = subs->pcm;
struct mixart_stream *stream;
struct mixart_pipe *pipe;
int err = 0;
int pcm_number;
mutex_lock(&mgr->setup_mutex);
if ( pcm == chip->pcm ) {
pcm_number = MIXART_PCM_ANALOG;
runtime->hw = snd_mixart_analog_caps;
} else {
snd_BUG_ON(pcm != chip->pcm_dig);
pcm_number = MIXART_PCM_DIGITAL;
runtime->hw = snd_mixart_digital_caps;
}
snd_printdd("snd_mixart_playback_open C%d/P%d/Sub%d\n", chip->chip_idx, pcm_number, subs->number);
/* get stream info */
stream = &(chip->playback_stream[pcm_number][subs->number]);
if (stream->status != MIXART_STREAM_STATUS_FREE){
/* streams in use */
snd_printk(KERN_ERR "snd_mixart_playback_open C%d/P%d/Sub%d in use\n", chip->chip_idx, pcm_number, subs->number);
err = -EBUSY;
goto _exit_open;
}
/* get pipe pointer (out pipe) */
pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
if (pipe == NULL) {
err = -EINVAL;
goto _exit_open;
}
/* start the pipe if necessary */
err = mixart_set_pipe_state(chip->mgr, pipe, 1);
if( err < 0 ) {
snd_printk(KERN_ERR "error starting pipe!\n");
snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
err = -EINVAL;
goto _exit_open;
}
stream->pipe = pipe;
stream->pcm_number = pcm_number;
stream->status = MIXART_STREAM_STATUS_OPEN;
stream->substream = subs;
stream->channels = 0; /* not configured yet */
runtime->private_data = stream;
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
/* if a sample rate is already used, another stream cannot change */
if(mgr->ref_count_rate++) {
if(mgr->sample_rate) {
runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
}
}
_exit_open:
mutex_unlock(&mgr->setup_mutex);
return err;
}
static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
{
struct snd_mixart *chip = snd_pcm_substream_chip(subs);
struct mixart_mgr *mgr = chip->mgr;
struct snd_pcm_runtime *runtime = subs->runtime;
struct snd_pcm *pcm = subs->pcm;
struct mixart_stream *stream;
struct mixart_pipe *pipe;
int err = 0;
int pcm_number;
mutex_lock(&mgr->setup_mutex);
if ( pcm == chip->pcm ) {
pcm_number = MIXART_PCM_ANALOG;
runtime->hw = snd_mixart_analog_caps;
} else {
snd_BUG_ON(pcm != chip->pcm_dig);
pcm_number = MIXART_PCM_DIGITAL;
runtime->hw = snd_mixart_digital_caps;
}
runtime->hw.channels_min = 2; /* for instance, no mono */
snd_printdd("snd_mixart_capture_open C%d/P%d/Sub%d\n", chip->chip_idx, pcm_number, subs->number);
/* get stream info */
stream = &(chip->capture_stream[pcm_number]);
if (stream->status != MIXART_STREAM_STATUS_FREE){
/* streams in use */
snd_printk(KERN_ERR "snd_mixart_capture_open C%d/P%d/Sub%d in use\n", chip->chip_idx, pcm_number, subs->number);
err = -EBUSY;
goto _exit_open;
}
/* get pipe pointer (in pipe) */
pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
if (pipe == NULL) {
err = -EINVAL;
goto _exit_open;
}
/* start the pipe if necessary */
err = mixart_set_pipe_state(chip->mgr, pipe, 1);
if( err < 0 ) {
snd_printk(KERN_ERR "error starting pipe!\n");
snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
err = -EINVAL;
goto _exit_open;
}
stream->pipe = pipe;
stream->pcm_number = pcm_number;
stream->status = MIXART_STREAM_STATUS_OPEN;
stream->substream = subs;
stream->channels = 0; /* not configured yet */
runtime->private_data = stream;
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
/* if a sample rate is already used, another stream cannot change */
if(mgr->ref_count_rate++) {
if(mgr->sample_rate) {
runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
}
}
_exit_open:
mutex_unlock(&mgr->setup_mutex);
return err;
}
static int snd_mixart_close(struct snd_pcm_substream *subs)
{
struct snd_mixart *chip = snd_pcm_substream_chip(subs);
struct mixart_mgr *mgr = chip->mgr;
struct mixart_stream *stream = subs->runtime->private_data;
mutex_lock(&mgr->setup_mutex);
snd_printdd("snd_mixart_close C%d/P%d/Sub%d\n", chip->chip_idx, stream->pcm_number, subs->number);
/* sample rate released */
if(--mgr->ref_count_rate == 0) {
mgr->sample_rate = 0;
}
/* delete pipe */
if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
snd_printk(KERN_ERR "error snd_mixart_kill_ref_pipe C%dP%d\n", chip->chip_idx, stream->pcm_number);
}
stream->pipe = NULL;
stream->status = MIXART_STREAM_STATUS_FREE;
stream->substream = NULL;
mutex_unlock(&mgr->setup_mutex);
return 0;
}
static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
{
struct snd_pcm_runtime *runtime = subs->runtime;
struct mixart_stream *stream = runtime->private_data;
return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
}
static struct snd_pcm_ops snd_mixart_playback_ops = {
.open = snd_mixart_playback_open,
.close = snd_mixart_close,
.ioctl = snd_pcm_lib_ioctl,
.prepare = snd_mixart_prepare,
.hw_params = snd_mixart_hw_params,
.hw_free = snd_mixart_hw_free,
.trigger = snd_mixart_trigger,
.pointer = snd_mixart_stream_pointer,
};
static struct snd_pcm_ops snd_mixart_capture_ops = {
.open = snd_mixart_capture_open,
.close = snd_mixart_close,
.ioctl = snd_pcm_lib_ioctl,
.prepare = snd_mixart_prepare,
.hw_params = snd_mixart_hw_params,
.hw_free = snd_mixart_hw_free,
.trigger = snd_mixart_trigger,
.pointer = snd_mixart_stream_pointer,
};
static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
{
#if 0
struct snd_pcm_substream *subs;
int stream;
for (stream = 0; stream < 2; stream++) {
int idx = 0;
for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
/* set up the unique device id with the chip index */
subs->dma_device.id = subs->pcm->device << 16 |
subs->stream << 8 | (subs->number + 1) |
(chip->chip_idx + 1) << 24;
}
#endif
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->mgr->pci), 32*1024, 32*1024);
}
/*
*/
static int snd_mixart_pcm_analog(struct snd_mixart *chip)
{
int err;
struct snd_pcm *pcm;
char name[32];
sprintf(name, "miXart analog %d", chip->chip_idx);
if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
MIXART_PLAYBACK_STREAMS,
MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
snd_printk(KERN_ERR "cannot create the analog pcm %d\n", chip->chip_idx);
return err;
}
pcm->private_data = chip;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
pcm->info_flags = 0;
strcpy(pcm->name, name);
preallocate_buffers(chip, pcm);
chip->pcm = pcm;
return 0;
}
/*
*/
static int snd_mixart_pcm_digital(struct snd_mixart *chip)
{
int err;
struct snd_pcm *pcm;
char name[32];
sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
MIXART_PLAYBACK_STREAMS,
MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
snd_printk(KERN_ERR "cannot create the digital pcm %d\n", chip->chip_idx);
return err;
}
pcm->private_data = chip;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
pcm->info_flags = 0;
strcpy(pcm->name, name);
preallocate_buffers(chip, pcm);
chip->pcm_dig = pcm;
return 0;
}
static int snd_mixart_chip_free(struct snd_mixart *chip)
{
kfree(chip);
return 0;
}
static int snd_mixart_chip_dev_free(struct snd_device *device)
{
struct snd_mixart *chip = device->device_data;
return snd_mixart_chip_free(chip);
}
/*
*/
static int __devinit snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
{
int err;
struct snd_mixart *chip;
static struct snd_device_ops ops = {
.dev_free = snd_mixart_chip_dev_free,
};
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (! chip) {
snd_printk(KERN_ERR "cannot allocate chip\n");
return -ENOMEM;
}
chip->card = card;
chip->chip_idx = idx;
chip->mgr = mgr;
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_mixart_chip_free(chip);
return err;
}
mgr->chip[idx] = chip;
snd_card_set_dev(card, &mgr->pci->dev);
return 0;
}
static int snd_mixart_capture_open(snd_pcm_substream_t *subs)
{
mixart_t *chip = snd_pcm_substream_chip(subs);
mixart_mgr_t *mgr = chip->mgr;
snd_pcm_runtime_t *runtime = subs->runtime;
snd_pcm_t *pcm = subs->pcm;
mixart_stream_t *stream;
mixart_pipe_t *pipe;
int err = 0;
int pcm_number;
down(&mgr->setup_mutex);
if ( pcm == chip->pcm ) {
pcm_number = MIXART_PCM_ANALOG;
runtime->hw = snd_mixart_analog_caps;
} else {
snd_assert ( pcm == chip->pcm_dig );
pcm_number = MIXART_PCM_DIGITAL;
runtime->hw = snd_mixart_digital_caps;
}
runtime->hw.channels_min = 2; /* for instance, no mono */
snd_printdd("snd_mixart_capture_open C%d/P%d/Sub%d\n", chip->chip_idx, pcm_number, subs->number);
/* get stream info */
stream = &(chip->capture_stream[pcm_number]);
if (stream->status != MIXART_STREAM_STATUS_FREE){
/* streams in use */
snd_printk(KERN_ERR "snd_mixart_capture_open C%d/P%d/Sub%d in use\n", chip->chip_idx, pcm_number, subs->number);
err = -EBUSY;
goto _exit_open;
}
/* get pipe pointer (in pipe) */
pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
if (pipe == NULL) {
err = -EINVAL;
goto _exit_open;
}
/* start the pipe if necessary */
err = mixart_set_pipe_state(chip->mgr, pipe, 1);
if( err < 0 ) {
snd_printk(KERN_ERR "error starting pipe!\n");
snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
err = -EINVAL;
goto _exit_open;
}
stream->pipe = pipe;
stream->pcm_number = pcm_number;
stream->status = MIXART_STREAM_STATUS_OPEN;
stream->substream = subs;
stream->channels = 0; /* not configured yet */
runtime->private_data = stream;
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
/* if a sample rate is already used, another stream cannot change */
if(mgr->ref_count_rate++) {
if(mgr->sample_rate) {
runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
}
}
_exit_open:
up(&mgr->setup_mutex);
return err;
}