diff mbox series

[v3] ASoC: SOF: compr: Add compress ops implementation

Message ID 20220120143741.492634-1-daniel.baluta@oss.nxp.com
State New
Headers show
Series [v3] ASoC: SOF: compr: Add compress ops implementation | expand

Commit Message

Daniel Baluta Jan. 20, 2022, 2:37 p.m. UTC 
From: Daniel Baluta <daniel.baluta@nxp.com>

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.

Note that get_caps and get_codec_caps are missing and will be added
later. This is because we need to find a way to advertise DSP
capabilities depending on supported platforms.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
Changes since v2:
- dropped patch 2/2 because deciding on how to support get_caps and get_codec_caps needs
some rework.
- annotated commit message for 1/2 to mention about get_caps and get_codec_caps

Changes since v1:
(https://lore.kernel.org/lkml/20220113161341.371345-1-daniel.baluta@oss.nxp.com/T/)

- Addressed review from Cezary and Pierre
- fixed layout of declaration blocks to be more consistent
- avoid using rtd and runtime simultaneously inside a function (always
  used rtd and crtd)
- check return code for create_page_table
- completely remove sof_compr_stream and use snd_compr_tstmap instead to
  keep compress stream related info.·
- add get_caps and get_codec_caps implementations (in patch 2)·

 sound/soc/sof/compress.c | 273 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 271 insertions(+), 2 deletions(-)

Comments

Mark Brown Feb. 8, 2022, 6:59 p.m. UTC | #1 
On Thu, 20 Jan 2022 16:37:41 +0200, Daniel Baluta wrote:
> From: Daniel Baluta <daniel.baluta@nxp.com>
> 
> 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.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: SOF: compr: Add compress ops implementation
      commit: 6324cf901e14c6662be508f30485e0f09c54694d

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark
diff mbox series

Patch

diff --git a/sound/soc/sof/compress.c b/sound/soc/sof/compress.c
index 01ca85f0b87f..91a9c95929cd 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 snd_compr_tstamp *tstamp,
+				      u64 host_pos, u64 buffer_size)
+{
+	u64 prev_pos;
+	unsigned int copied;
+
+	div64_u64_rem(tstamp->copied_total, buffer_size, &prev_pos);
+
+	if (host_pos < prev_pos)
+		copied = (buffer_size - prev_pos) + host_pos;
+	else
+		copied = host_pos - prev_pos;
+
+	tstamp->copied_total += copied;
+}
+
 static void snd_sof_compr_fragment_elapsed_work(struct work_struct *work)
 {
 	struct snd_sof_pcm_stream *sps =
@@ -29,14 +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_pcm_runtime *rtd = cstream->private_data;
+	struct snd_compr_runtime *crtd = cstream->runtime;
 	struct snd_soc_component *component;
-	struct snd_soc_pcm_runtime *rtd;
+	struct snd_compr_tstamp *tstamp;
 	struct snd_sof_pcm *spcm;
 
 	if (!cstream)
 		return;
 
-	rtd = cstream->private_data;
+	tstamp = crtd->private_data;
 	component = snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
 
 	spcm = snd_sof_find_spcm_dai(component, rtd);
@@ -46,6 +64,257 @@  void snd_sof_compr_fragment_elapsed(struct snd_compr_stream *cstream)
 		return;
 	}
 
+	sof_set_transferred_bytes(tstamp, spcm->stream[cstream->direction].posn.host_posn,
+				  crtd->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_dma_buffer *dmab = cstream->runtime->dma_buffer_p;
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	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 *crtd = cstream->runtime;
+	struct snd_compr_tstamp *tstamp;
+	struct snd_sof_pcm *spcm;
+	int dir;
+
+	tstamp = kzalloc(sizeof(*tstamp), GFP_KERNEL);
+	if (!tstamp)
+		return -ENOMEM;
+
+	spcm = snd_sof_find_spcm_dai(component, rtd);
+	if (!spcm) {
+		kfree(tstamp);
+		return -EINVAL;
+	}
+
+	dir = cstream->direction;
+
+	if (spcm->stream[dir].cstream) {
+		kfree(tstamp);
+		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;
+
+	crtd->private_data = tstamp;
+
+	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_compr_tstamp *tstamp = cstream->runtime->private_data;
+	struct snd_soc_pcm_runtime *rtd = cstream->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(tstamp);
+
+	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 = cstream->private_data;
+	struct snd_compr_runtime *crtd = cstream->runtime;
+	struct sof_ipc_pcm_params_reply ipc_params_reply;
+	struct snd_compr_tstamp *tstamp;
+	struct sof_ipc_pcm_params pcm;
+	struct snd_sof_pcm *spcm;
+	int ret;
+
+	tstamp = crtd->private_data;
+
+	spcm = snd_sof_find_spcm_dai(component, rtd);
+
+	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, crtd->buffer_size);
+	if (ret < 0)
+		return ret;
+
+	ret = create_page_table(component, cstream, crtd->dma_area, crtd->dma_bytes);
+	if (ret < 0)
+		return ret;
+
+	memset(&pcm, 0, sizeof(pcm));
+
+	pcm.params.buffer.pages = PFN_UP(crtd->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 = crtd->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;
+	}
+
+	tstamp->byte_offset = sdev->stream_box.offset + ipc_params_reply.posn_offset;
+	tstamp->sampling_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)
+{
+	/* TODO: we don't query the supported codecs for now, if the
+	 * application asks for an unsupported codec the set_params() will fail.
+	 */
+	return 0;
+}
+
+int sof_compr_trigger(struct snd_soc_component *component,
+		      struct snd_compr_stream *cstream, int cmd)
+{
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct sof_ipc_stream stream;
+	struct sof_ipc_reply reply;
+	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_tstamp *pstamp = cstream->runtime->private_data;
+
+	tstamp->sampling_rate = pstamp->sampling_rate;
+	tstamp->copied_total = pstamp->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);