From: Daniel Baluta <daniel.baluta@xxxxxxx>
Implement snd_compress_ops. There are a lot of similarities with
PCM implementation.
For now we use sof_ipc_pcm_params to transfer compress parameters to SOF
firmware.
This will be changed in the future once we either add new compress
parameters to SOF or enhance existing sof_ipc_pcm_params structure
to support all native compress params.
Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxx>
---
sound/soc/sof/compress.c | 270 ++++++++++++++++++++++++++++++++++++++-
sound/soc/sof/sof-priv.h | 6 +
2 files changed, 271 insertions(+), 5 deletions(-)
diff --git a/sound/soc/sof/compress.c b/sound/soc/sof/compress.c
index 01ca85f0b87f..2db1517d906d 100644
--- a/sound/soc/sof/compress.c
+++ b/sound/soc/sof/compress.c
@@ -10,6 +10,22 @@
#include "sof-audio.h"
#include "sof-priv.h"
+static void sof_set_transferred_bytes(struct sof_compr_stream *sstream,
+ u64 host_pos, u64 buffer_size)
+{
+ u64 prev_pos;
+ unsigned int copied;
+
+ div64_u64_rem(sstream->copied_total, buffer_size, &prev_pos);
+
+ if (host_pos < prev_pos)
+ copied = (buffer_size - prev_pos) + host_pos;
+ else
+ copied = host_pos - prev_pos;
+
+ sstream->copied_total += copied;
+}
+
static void snd_sof_compr_fragment_elapsed_work(struct work_struct *work)
{
struct snd_sof_pcm_stream *sps =
@@ -29,16 +45,16 @@ void snd_sof_compr_init_elapsed_work(struct work_struct *work)
*/
void snd_sof_compr_fragment_elapsed(struct snd_compr_stream *cstream)
{
- struct snd_soc_component *component;
- struct snd_soc_pcm_runtime *rtd;
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_compr_runtime *runtime = cstream->runtime;
+ struct sof_compr_stream *sstream = runtime->private_data;
+ struct snd_soc_component *component =
+ snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
struct snd_sof_pcm *spcm;
if (!cstream)
return;
- rtd = cstream->private_data;
- component = snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
-
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm) {
dev_err(component->dev,
@@ -46,6 +62,250 @@ void snd_sof_compr_fragment_elapsed(struct snd_compr_stream *cstream)
return;
}
+ sof_set_transferred_bytes(sstream, spcm->stream[cstream->direction].posn.host_posn,
+ runtime->buffer_size);
+
/* use the same workqueue-based solution as for PCM, cf. snd_sof_pcm_elapsed */
schedule_work(&spcm->stream[cstream->direction].period_elapsed_work);
}
+
+static int create_page_table(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream,
+ unsigned char *dma_area, size_t size)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_dma_buffer *dmab = cstream->runtime->dma_buffer_p;
+ int dir = cstream->direction;
+ struct snd_sof_pcm *spcm;
+
+ spcm = snd_sof_find_spcm_dai(component, rtd);
+ if (!spcm)
+ return -EINVAL;
+
+ return snd_sof_create_page_table(component->dev, dmab,
+ spcm->stream[dir].page_table.area, size);
+}
+
+int sof_compr_open(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_compr_runtime *runtime = cstream->runtime;
+ struct sof_compr_stream *sstream;
+ struct snd_sof_pcm *spcm;
+ int dir;
+
+ sstream = kzalloc(sizeof(*sstream), GFP_KERNEL);
+ if (!sstream)
+ return -ENOMEM;
+
+ spcm = snd_sof_find_spcm_dai(component, rtd);
+ if (!spcm) {
+ kfree(sstream);
+ return -EINVAL;
+ }
+
+ dir = cstream->direction;
+
+ if (spcm->stream[dir].cstream) {
+ kfree(sstream);
+ return -EBUSY;
+ }
+
+ spcm->stream[dir].cstream = cstream;
+ spcm->stream[dir].posn.host_posn = 0;
+ spcm->stream[dir].posn.dai_posn = 0;
+ spcm->prepared[dir] = false;
+
+ runtime->private_data = sstream;
+
+ return 0;
+}
+
+int sof_compr_free(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream)
+{
+ struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_compr_runtime *runtime = cstream->runtime;
+ struct sof_compr_stream *sstream = runtime->private_data;
+ struct sof_ipc_stream stream;
+ struct sof_ipc_reply reply;
+ struct snd_sof_pcm *spcm;
+ int ret = 0;
+
+ spcm = snd_sof_find_spcm_dai(component, rtd);
+ if (!spcm)
+ return -EINVAL;
+
+ stream.hdr.size = sizeof(stream);
+ stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE;
+ stream.comp_id = spcm->stream[cstream->direction].comp_id;
+
+ if (spcm->prepared[cstream->direction]) {
+ ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd,
+ &stream, sizeof(stream),
+ &reply, sizeof(reply));
+ if (!ret)
+ spcm->prepared[cstream->direction] = false;
+ }
+
+ cancel_work_sync(&spcm->stream[cstream->direction].period_elapsed_work);
+ spcm->stream[cstream->direction].cstream = NULL;
+ kfree(sstream);
+
+ return ret;
+}
+
+int sof_compr_set_params(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream, struct snd_compr_params *params)
+{
+ struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+ struct snd_soc_pcm_runtime *rtd_pcm = cstream->private_data;
+ struct snd_compr_runtime *rtd = cstream->runtime;
+ struct sof_compr_stream *sstream = rtd->private_data;
+ struct sof_ipc_pcm_params_reply ipc_params_reply;
+ struct sof_ipc_pcm_params pcm;
+ struct snd_sof_pcm *spcm;
+ int ret;
+
+ spcm = snd_sof_find_spcm_dai(component, rtd_pcm);
+ if (!spcm)
+ return -EINVAL;
+
+ cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG;
+ cstream->dma_buffer.dev.dev = sdev->dev;
+ ret = snd_compr_malloc_pages(cstream, rtd->buffer_size);
+ if (ret < 0)
+ return ret;
+
+ create_page_table(component, cstream, rtd->dma_area, rtd->dma_bytes);
+
+ memset(&pcm, 0, sizeof(pcm));
+
+ pcm.params.buffer.pages = PFN_UP(rtd->dma_bytes);
+ pcm.hdr.size = sizeof(pcm);
+ pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS;
+
+ pcm.comp_id = spcm->stream[cstream->direction].comp_id;
+ pcm.params.hdr.size = sizeof(pcm.params);
+ pcm.params.buffer.phy_addr = spcm->stream[cstream->direction].page_table.addr;
+ pcm.params.buffer.size = rtd->dma_bytes;
+ pcm.params.direction = cstream->direction;
+ pcm.params.channels = params->codec.ch_out;
+ pcm.params.rate = params->codec.sample_rate;
+ pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED;
+ pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE;
+ pcm.params.sample_container_bytes =
+ snd_pcm_format_physical_width(SNDRV_PCM_FORMAT_S32) >> 3;
+ pcm.params.host_period_bytes = params->buffer.fragment_size;
+
+ ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm),
+ &ipc_params_reply, sizeof(ipc_params_reply));
+ if (ret < 0) {
+ dev_err(component->dev, "error ipc failed\n");
+ return ret;
+ }
+
+ sstream->posn_offset = sdev->stream_box.offset + ipc_params_reply.posn_offset;
+ sstream->sample_rate = params->codec.sample_rate;
+ spcm->prepared[cstream->direction] = true;
+
+ return 0;
+}
+
+int sof_compr_get_params(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream, struct snd_codec *params)
+{
+ return 0;
+}
+
+int sof_compr_trigger(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream, int cmd)
+{
+ struct sof_ipc_stream stream;
+ struct sof_ipc_reply reply;
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+ struct snd_sof_pcm *spcm;
+
+ spcm = snd_sof_find_spcm_dai(component, rtd);
+ if (!spcm)
+ return -EINVAL;
+
+ stream.hdr.size = sizeof(stream);
+ stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG;
+ stream.comp_id = spcm->stream[cstream->direction].comp_id;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP;
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE;
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE;
+ break;
+ default:
+ dev_err(component->dev, "error: unhandled trigger cmd %d\n", cmd);
+ break;
+ }
+
+ return sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd,
+ &stream, sizeof(stream),
+ &reply, sizeof(reply));
+}
+
+int sof_compr_copy(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream,
+ char __user *buf, size_t count)
+{
+ struct snd_compr_runtime *rtd = cstream->runtime;
+ unsigned int offset, n;
+ void *ptr;
+ int ret;
+
+ if (count > rtd->buffer_size)
+ count = rtd->buffer_size;
+
+ div_u64_rem(rtd->total_bytes_available, rtd->buffer_size, &offset);
+ ptr = rtd->dma_area + offset;
+ n = rtd->buffer_size - offset;
+
+ if (count < n) {
+ ret = copy_from_user(ptr, buf, count);
+ } else {
+ ret = copy_from_user(ptr, buf, n);
+ ret += copy_from_user(rtd->dma_area, buf + n, count - n);
+ }
+
+ return count - ret;
+}
+
+static int sof_compr_pointer(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream,
+ struct snd_compr_tstamp *tstamp)
+{
+ struct snd_compr_runtime *runtime = cstream->runtime;
+ struct sof_compr_stream *sstream = runtime->private_data;
+
+ tstamp->sampling_rate = sstream->sample_rate;
+ tstamp->copied_total = sstream->copied_total;
+
+ return 0;
+}
+
+struct snd_compress_ops sof_compressed_ops = {
+ .open = sof_compr_open,
+ .free = sof_compr_free,
+ .set_params = sof_compr_set_params,
+ .get_params = sof_compr_get_params,
+ .trigger = sof_compr_trigger,
+ .pointer = sof_compr_pointer,
+ .copy = sof_compr_copy,
+};
+EXPORT_SYMBOL(sof_compressed_ops);
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 087935192ce8..d001a762a866 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -108,6 +108,12 @@ enum sof_debugfs_access_type {
SOF_DEBUGFS_ACCESS_D0_ONLY,
};
+struct sof_compr_stream {
+ unsigned int copied_total;
+ unsigned int sample_rate;
+ size_t posn_offset;
+};
+
struct snd_sof_dev;
struct snd_sof_ipc_msg;
struct snd_sof_ipc;
--
2.27.0
