[alsa-devel] [v2 5/5] ASoC: Intel: sst - add compressed ops handling
Subhransu S. Prusty
subhransu.s.prusty at intel.com
Tue Aug 19 12:37:07 CEST 2014
From: Vinod Koul <vinod.koul at intel.com>
This patch add low level IPC handling for compressed stream operations
Signed-off-by: Vinod Koul <vinod.koul at intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty at intel.com>
---
sound/soc/intel/sst/sst_drv_interface.c | 298 ++++++++++++++++++++++++++++++++
1 file changed, 298 insertions(+)
diff --git a/sound/soc/intel/sst/sst_drv_interface.c b/sound/soc/intel/sst/sst_drv_interface.c
index e2cf1964409a..7ef148ae09df 100644
--- a/sound/soc/intel/sst/sst_drv_interface.c
+++ b/sound/soc/intel/sst/sst_drv_interface.c
@@ -228,6 +228,287 @@ static int sst_open_pcm_stream(struct device *dev,
return retval;
}
+static int sst_cdev_open(struct device *dev,
+ struct snd_sst_params *str_params, struct sst_compress_cb *cb)
+{
+ int str_id, retval;
+ struct stream_info *stream;
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ pr_debug("%s: doing rtpm_get\n", __func__);
+
+ retval = pm_runtime_get_sync(ctx->dev);
+ if (retval)
+ return retval;
+
+ str_id = sst_get_stream(ctx, str_params);
+ if (str_id > 0) {
+ pr_debug("stream allocated in sst_cdev_open %d\n", str_id);
+ stream = &ctx->streams[str_id];
+ stream->compr_cb = cb->compr_cb;
+ stream->compr_cb_param = cb->param;
+ stream->drain_notify = cb->drain_notify;
+ stream->drain_cb_param = cb->drain_cb_param;
+ } else {
+ pr_err("stream encountered error during alloc %d\n", str_id);
+ str_id = -EINVAL;
+ sst_pm_runtime_put(ctx);
+ }
+ return str_id;
+}
+
+static int sst_cdev_close(struct device *dev, unsigned int str_id)
+{
+ int retval;
+ struct stream_info *stream;
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ pr_debug("%s: Entry\n", __func__);
+ stream = get_stream_info(ctx, str_id);
+ if (!stream) {
+ pr_err("stream info is NULL for str %d!!!\n", str_id);
+ return -EINVAL;
+ }
+
+ if (stream->status == STREAM_RESET) {
+ /* silently fail here as we have cleaned the stream */
+ pr_debug("stream in reset state...\n");
+ stream->status = STREAM_UN_INIT;
+
+ retval = 0;
+ goto put;
+ }
+
+ retval = sst_free_stream(ctx, str_id);
+put:
+ stream->compr_cb_param = NULL;
+ stream->compr_cb = NULL;
+
+ /* The free_stream will return a error if there is no stream to free,
+ (i.e. the alloc failure case). And in this case the open does a put in
+ the error scenario, so skip in this case.
+ In the close we need to handle put in the success scenario and
+ the timeout error(EBUSY) scenario. */
+ if (!retval || (retval == -EBUSY))
+ sst_pm_runtime_put(ctx);
+ else
+ pr_err("%s: free stream returned err %d\n", __func__, retval);
+
+ pr_debug("%s: End\n", __func__);
+ return retval;
+
+}
+
+static int sst_cdev_ack(struct device *dev, unsigned int str_id,
+ unsigned long bytes)
+{
+ struct stream_info *stream;
+ struct snd_sst_tstamp fw_tstamp = {0,};
+ int offset;
+ void __iomem *addr;
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ pr_debug("sst: ackfor %d\n", str_id);
+ stream = get_stream_info(ctx, str_id);
+ if (!stream)
+ return -EINVAL;
+
+ /* update bytes sent */
+ stream->cumm_bytes += bytes;
+ pr_debug("bytes copied %d inc by %ld\n", stream->cumm_bytes, bytes);
+
+ memcpy_fromio(&fw_tstamp,
+ ((void *)(ctx->mailbox + ctx->tstamp)
+ +(str_id * sizeof(fw_tstamp))),
+ sizeof(fw_tstamp));
+
+ fw_tstamp.bytes_copied = stream->cumm_bytes;
+ pr_debug("bytes sent to fw %llu inc by %ld\n", fw_tstamp.bytes_copied,
+ bytes);
+
+ addr = ((void *)(ctx->mailbox + ctx->tstamp)) +
+ (str_id * sizeof(fw_tstamp));
+ offset = offsetof(struct snd_sst_tstamp, bytes_copied);
+ sst_shim_write(addr, offset, fw_tstamp.bytes_copied);
+ return 0;
+
+}
+
+static int sst_cdev_set_metadata(struct device *dev,
+ unsigned int str_id, struct snd_compr_metadata *metadata)
+{
+ int retval = 0, pvt_id, len;
+ struct ipc_post *msg = NULL;
+ struct stream_info *str_info;
+ struct ipc_dsp_hdr dsp_hdr;
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ pr_debug("set metadata for stream %d\n", str_id);
+
+ str_info = get_stream_info(ctx, str_id);
+ if (!str_info)
+ return -EINVAL;
+
+ if (sst_create_ipc_msg(&msg, 1))
+ return -ENOMEM;
+
+ pvt_id = sst_assign_pvt_id(ctx);
+ pr_debug("pvt id = %d\n", pvt_id);
+ pr_debug("pipe id = %d\n", str_info->pipe_id);
+ sst_fill_header_mrfld(&msg->mrfld_header,
+ IPC_CMD, str_info->task_id, 1, pvt_id);
+
+ len = sizeof(*metadata) + sizeof(dsp_hdr);
+ msg->mrfld_header.p.header_low_payload = len;
+ sst_fill_header_dsp(&dsp_hdr, IPC_IA_SET_STREAM_PARAMS_MRFLD,
+ str_info->pipe_id, sizeof(*metadata));
+ memcpy(msg->mailbox_data, &dsp_hdr, sizeof(dsp_hdr));
+ memcpy(msg->mailbox_data + sizeof(dsp_hdr),
+ metadata, sizeof(*metadata));
+
+ ctx->ops->sync_post_message(ctx, msg);
+ return retval;
+}
+
+static int sst_cdev_stream_pause(struct device *dev, unsigned int str_id)
+{
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ return sst_pause_stream(ctx, str_id);
+}
+
+static int sst_cdev_stream_pause_release(struct device *dev,
+ unsigned int str_id)
+{
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ return sst_resume_stream(ctx, str_id);
+}
+
+static int sst_cdev_stream_start(struct device *dev, unsigned int str_id)
+{
+ struct stream_info *str_info;
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ str_info = get_stream_info(ctx, str_id);
+ if (!str_info)
+ return -EINVAL;
+ str_info->prev = str_info->status;
+ str_info->status = STREAM_RUNNING;
+ return sst_start_stream(ctx, str_id);
+}
+
+static int sst_cdev_stream_drop(struct device *dev, unsigned int str_id)
+{
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ return sst_drop_stream(ctx, str_id);
+}
+
+static int sst_cdev_stream_drain(struct device *dev, unsigned int str_id)
+{
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ return sst_drain_stream(ctx, str_id, false);
+}
+
+static int sst_cdev_stream_partial_drain(struct device *dev,
+ unsigned int str_id)
+{
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ return sst_drain_stream(ctx, str_id, true);
+}
+
+static int sst_cdev_tstamp(struct device *dev, unsigned int str_id,
+ struct snd_compr_tstamp *tstamp)
+{
+ struct snd_sst_tstamp fw_tstamp = {0,};
+ struct stream_info *stream;
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ memcpy_fromio(&fw_tstamp,
+ ((void *)(ctx->mailbox + ctx->tstamp)
+ +(str_id * sizeof(fw_tstamp))),
+ sizeof(fw_tstamp));
+
+ stream = get_stream_info(ctx, str_id);
+ if (!stream)
+ return -EINVAL;
+ pr_debug("rb_counter %llu in bytes\n", fw_tstamp.ring_buffer_counter);
+
+ tstamp->copied_total = fw_tstamp.ring_buffer_counter;
+ tstamp->pcm_frames = fw_tstamp.frames_decoded;
+ tstamp->pcm_io_frames = div_u64(fw_tstamp.hardware_counter,
+ (u64)((stream->num_ch) * SST_GET_BYTES_PER_SAMPLE(24)));
+ tstamp->sampling_rate = fw_tstamp.sampling_frequency;
+ pr_debug("PCM = %u\n", tstamp->pcm_io_frames);
+ pr_debug("Pointer Query on strid = %d copied_total %d, decodec %d\n",
+ str_id, tstamp->copied_total, tstamp->pcm_frames);
+ pr_debug("rendered %d\n", tstamp->pcm_io_frames);
+ return 0;
+}
+
+static int sst_cdev_caps(struct snd_compr_caps *caps)
+{
+ caps->num_codecs = NUM_CODEC;
+ caps->min_fragment_size = MIN_FRAGMENT_SIZE; /* 50KB */
+ caps->max_fragment_size = MAX_FRAGMENT_SIZE; /* 1024KB */
+ caps->min_fragments = MIN_FRAGMENT;
+ caps->max_fragments = MAX_FRAGMENT;
+ caps->codecs[0] = SND_AUDIOCODEC_MP3;
+ caps->codecs[1] = SND_AUDIOCODEC_AAC;
+ return 0;
+}
+static unsigned int sample_rates[] = {48000, 44100, 32000, 16000, 8000};
+static unsigned int bit_rates[] = {320, 192};
+
+static int sst_cdev_codec_caps(struct snd_compr_codec_caps *codec)
+{
+ int i;
+
+ codec->num_descriptors = 2;
+
+ codec->descriptor[0].num_sample_rates = ARRAY_SIZE(sample_rates);
+ for (i = 0; i < ARRAY_SIZE(sample_rates); i++)
+ codec->descriptor[0].sample_rates[i] = sample_rates[i];
+
+ if (codec->codec == SND_AUDIOCODEC_MP3) {
+ codec->descriptor[0].max_ch = 2;
+ codec->descriptor[0].num_bitrates = ARRAY_SIZE(bit_rates);
+ for (i = 0; i < ARRAY_SIZE(bit_rates); i++)
+ codec->descriptor[0].bit_rate[i] = bit_rates[i];
+
+ codec->descriptor[0].profiles = 0;
+ codec->descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO;
+ codec->descriptor[0].formats = 0;
+ } else if (codec->codec == SND_AUDIOCODEC_AAC) {
+ codec->descriptor[1].max_ch = 2;
+ codec->descriptor[1].num_bitrates = ARRAY_SIZE(bit_rates);
+ for (i = 0; i < ARRAY_SIZE(bit_rates); i++)
+ codec->descriptor[1].bit_rate[i] = bit_rates[i];
+ codec->descriptor[1].profiles = 0;
+ codec->descriptor[1].modes = 0;
+ codec->descriptor[1].formats =
+ (SND_AUDIOSTREAMFORMAT_MP4ADTS |
+ SND_AUDIOSTREAMFORMAT_RAW);
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void sst_cdev_fragment_elapsed(struct intel_sst_drv *ctx, int str_id)
+{
+ struct stream_info *stream;
+
+ pr_debug("fragment elapsed from firmware for str_id %d\n", str_id);
+ stream = &ctx->streams[str_id];
+ if (stream->compr_cb)
+ stream->compr_cb(stream->compr_cb_param);
+}
+
/*
* sst_close_pcm_stream - Close PCM interface
*
@@ -446,10 +727,27 @@ static struct sst_ops pcm_ops = {
.close = sst_close_pcm_stream,
};
+static struct compress_sst_ops compr_ops = {
+ .open = sst_cdev_open,
+ .close = sst_cdev_close,
+ .stream_pause = sst_cdev_stream_pause,
+ .stream_pause_release = sst_cdev_stream_pause_release,
+ .stream_start = sst_cdev_stream_start,
+ .stream_drop = sst_cdev_stream_drop,
+ .stream_drain = sst_cdev_stream_drain,
+ .stream_partial_drain = sst_cdev_stream_partial_drain,
+ .tstamp = sst_cdev_tstamp,
+ .ack = sst_cdev_ack,
+ .get_caps = sst_cdev_caps,
+ .get_codec_caps = sst_cdev_codec_caps,
+ .set_metadata = sst_cdev_set_metadata,
+};
+
static struct sst_device sst_dsp_device = {
.name = "Intel(R) SST LPE",
.dev = NULL,
.ops = &pcm_ops,
+ .compr_ops = &compr_ops,
};
/*
--
1.9.0
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