Extend ipc stream parameters sent to DSP

Merge series from Daniel Baluta <daniel.baluta@oss.nxp.com>
Daniel Baluta <daniel.baluta@nxp.com>:

From: Daniel Baluta <daniel.baluta@nxp.com>

We need a way to send extra parameters to DSP firmware. In order to do
this, we introduce ext_data array at the end of ipc_stream_params.

With this new addition we can send compress parameters.

This requires SOF ABI bump.

include/sound/sof/stream.h

@@ -86,9 +86,11 @@ struct sof_ipc_stream_params {
 	uint32_t host_period_bytes;
 	uint16_t no_stream_position; /**< 1 means don't send stream position */
 	uint8_t cont_update_posn; /**< 1 means continuous update stream position */
-
-	uint8_t reserved[5];
+	uint8_t reserved0;
+	int16_t ext_data_length; /**< 0, means no extended data */
+	uint8_t reserved[2];
 	uint16_t chmap[SOF_IPC_MAX_CHANNELS];	/**< channel map - SOF_CHMAP_ */
+	uint8_t ext_data[]; /**< extended data */
 } __packed;
 
 /* PCM params info - SOF_IPC_STREAM_PCM_PARAMS */

include/uapi/sound/sof/abi.h

@@ -28,7 +28,7 @@
 
 /* SOF ABI version major, minor and patch numbers */
 #define SOF_ABI_MAJOR 3
-#define SOF_ABI_MINOR 21
+#define SOF_ABI_MINOR 22
 #define SOF_ABI_PATCH 0
 
 /* SOF ABI version number. Format within 32bit word is MMmmmppp */

sound/soc/sof/compress.c

@@ -167,11 +167,23 @@ static int sof_compr_set_params(struct snd_soc_component *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 sof_ipc_fw_ready *ready = &sdev->fw_ready;
+	struct sof_ipc_fw_version *v = &ready->version;
 	struct snd_compr_tstamp *tstamp;
-	struct sof_ipc_pcm_params pcm;
+	struct sof_ipc_pcm_params *pcm;
 	struct snd_sof_pcm *spcm;
+	size_t ext_data_size;
 	int ret;
 
+	if (v->abi_version < SOF_ABI_VER(3, 22, 0)) {
+		dev_err(component->dev,
+			"Compress params not supported with FW ABI version %d:%d:%d\n",
+			SOF_ABI_VERSION_MAJOR(v->abi_version),
+			SOF_ABI_VERSION_MINOR(v->abi_version),
+			SOF_ABI_VERSION_PATCH(v->abi_version));
+		return -EINVAL;
+	}
+
 	tstamp = crtd->private_data;
 
 	spcm = snd_sof_find_spcm_dai(component, rtd);
@@ -179,40 +191,50 @@ static int sof_compr_set_params(struct snd_soc_component *component,
 	if (!spcm)
 		return -EINVAL;
 
+	ext_data_size = sizeof(params->codec);
+
+	if (sizeof(*pcm) + ext_data_size > sdev->ipc->max_payload_size)
+		return -EINVAL;
+
+	pcm = kzalloc(sizeof(*pcm) + ext_data_size, GFP_KERNEL);
+	if (!pcm)
+		return -ENOMEM;
+
 	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;
+		goto out;
 
 	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 =
+		goto out;
+
+	pcm->params.buffer.pages = PFN_UP(crtd->dma_bytes);
+	pcm->hdr.size = sizeof(*pcm) + ext_data_size;
+	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) + ext_data_size;
+	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;
+	pcm->params.host_period_bytes = params->buffer.fragment_size;
+	pcm->params.ext_data_length = ext_data_size;
+
+	memcpy((u8 *)pcm->params.ext_data, &params->codec, ext_data_size);
 
-	ret = sof_ipc_tx_message(sdev->ipc, &pcm, sizeof(pcm),
+	ret = sof_ipc_tx_message(sdev->ipc, pcm, sizeof(*pcm) + ext_data_size,
 				 &ipc_params_reply, sizeof(ipc_params_reply));
 	if (ret < 0) {
 		dev_err(component->dev, "error ipc failed\n");
-		return ret;
+		goto out;
 	}
 
 	tstamp->byte_offset = sdev->stream_box.offset + ipc_params_reply.posn_offset;
@@ -220,7 +242,10 @@ static int sof_compr_set_params(struct snd_soc_component *component,
 
 	spcm->prepared[cstream->direction] = true;
 
-	return 0;
+out:
+	kfree(pcm);
+
+	return ret;
 }
 
 static int sof_compr_get_params(struct snd_soc_component *component,