mixart.c

linux-2.6.15.6

	}

	return 0;
}


static int mixart_set_format(mixart_stream_t *stream, snd_pcm_format_t format)
{
	int err;
	mixart_t *chip;
	mixart_msg_t request;
	mixart_stream_param_desc_t stream_param;
	mixart_return_uid_t 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 = (mixart_uid_t){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(snd_pcm_substream_t *subs,
                                snd_pcm_hw_params_t *hw)
{
	mixart_t *chip = snd_pcm_substream_chip(subs);
	mixart_mgr_t *mgr = chip->mgr;
	mixart_stream_t *stream = (mixart_stream_t*)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);

	down(&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) {
		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);
	}
	up(&mgr->setup_mutex);

	return err;
}

static int snd_mixart_hw_free(snd_pcm_substream_t *subs)
{
	mixart_t *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 snd_pcm_hardware_t snd_mixart_analog_caps =
{
	.info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
			      SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
			      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 snd_pcm_hardware_t snd_mixart_digital_caps =
{
	.info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
			      SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
			      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(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;
	}
	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:
	up(&mgr->setup_mutex);

	return err;
}


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;
}



static int snd_mixart_close(snd_pcm_substream_t *subs)
{
	mixart_t *chip = snd_pcm_substream_chip(subs);
	mixart_mgr_t *mgr = chip->mgr;
	mixart_stream_t *stream = (mixart_stream_t*)subs->runtime->private_data;

	down(&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;

	up(&mgr->setup_mutex);
	return 0;
}


static snd_pcm_uframes_t snd_mixart_stream_pointer(snd_pcm_substream_t * subs)
{
	snd_pcm_runtime_t *runtime = subs->runtime;
	mixart_stream_t   *stream  = (mixart_stream_t*)runtime->private_data;

	return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
}



static snd_pcm_ops_t 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 snd_pcm_ops_t 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(mixart_t *chip, snd_pcm_t *pcm)
{
#if 0
	snd_pcm_substream_t *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(mixart_t *chip)
{
	int err;
	snd_pcm_t *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(mixart_t *chip)
{
	int err;
	snd_pcm_t *pcm;
	char name[32];

	sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
	if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,