ASoC: SOF: append extended data to sof_ipc_comp_volume

Append the extended data to the end of the struct sof_ipc_comp_volume,
construct the ipc for COMP_NEW during the topology load stage.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200904132744.1699575-10-kai.vehmanen@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/topology.c

@@ -1878,11 +1878,13 @@ static int sof_widget_load_pga(struct snd_soc_component *scomp, int index,
 	struct snd_soc_tplg_private *private = &tw->priv;
 	struct sof_ipc_comp_volume *volume;
 	struct snd_sof_control *scontrol;
+	size_t ipc_size = sizeof(*volume);
 	int min_step;
 	int max_step;
 	int ret;
 
-	volume = kzalloc(sizeof(*volume), GFP_KERNEL);
+	volume = (struct sof_ipc_comp_volume *)
+		 sof_comp_alloc(swidget, &ipc_size, index, core);
 	if (!volume)
 		return -ENOMEM;
 
@@ -1894,12 +1896,7 @@ static int sof_widget_load_pga(struct snd_soc_component *scomp, int index,
 	}
 
 	/* configure volume IPC message */
-	volume->comp.hdr.size = sizeof(*volume);
-	volume->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
-	volume->comp.id = swidget->comp_id;
 	volume->comp.type = SOF_COMP_VOLUME;
-	volume->comp.pipeline_id = index;
-	volume->comp.core = core;
 	volume->config.hdr.size = sizeof(volume->config);
 
 	ret = sof_parse_tokens(scomp, volume, volume_tokens,
@@ -1936,7 +1933,7 @@ static int sof_widget_load_pga(struct snd_soc_component *scomp, int index,
 	}
 
 	ret = sof_ipc_tx_message(sdev->ipc, volume->comp.hdr.cmd, volume,
-				 sizeof(*volume), r, sizeof(*r));
+				 ipc_size, r, sizeof(*r));
 	if (ret >= 0)
 		return ret;
 err: