From: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx>
Add helper to allocate buffer for IPC component, configure the basic
settings, and set up the extended data for the subsequent IPC sending.
Signed-off-by: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Signed-off-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
---
sound/soc/sof/topology.c | 45 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index 7d1013e315fc..836da1a6f7cc 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -1453,6 +1453,51 @@ static int sof_connect_dai_widget(struct snd_soc_component *scomp,
return 0;
}
+/**
+ * sof_comp_alloc - allocate and initialize buffer for a new component
+ * @swidget: pointer to struct snd_sof_widget containing extended data
+ * @ipc_size: IPC payload size that will be updated depending on valid
+ * extended data.
+ * @index: ID of the pipeline the component belongs to
+ * @core: index of the DSP core that the component should run on
+ *
+ * Return: The pointer to the new allocated component, NULL if failed.
+ */
+static struct sof_ipc_comp *sof_comp_alloc(struct snd_sof_widget *swidget,
+ size_t *ipc_size, int index,
+ int core)
+{
+ u8 nil_uuid[SOF_UUID_SIZE] = {0};
+ struct sof_ipc_comp *comp;
+ size_t total_size = *ipc_size;
+
+ /* only non-zero UUID is valid */
+ if (memcmp(&swidget->comp_ext, nil_uuid, SOF_UUID_SIZE))
+ total_size += sizeof(swidget->comp_ext);
+
+ comp = kzalloc(total_size, GFP_KERNEL);
+ if (!comp)
+ return NULL;
+
+ /* configure comp new IPC message */
+ comp->hdr.size = total_size;
+ comp->hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
+ comp->id = swidget->comp_id;
+ comp->pipeline_id = index;
+ comp->core = core;
+
+ /* handle the extended data if needed */
+ if (total_size > *ipc_size) {
+ /* append extended data to the end of the component */
+ memcpy((u8 *)comp + *ipc_size, &swidget->comp_ext, sizeof(swidget->comp_ext));
+ comp->ext_data_length = sizeof(swidget->comp_ext);
+ }
+
+ /* update ipc_size and return */
+ *ipc_size = total_size;
+ return comp;
+}
+
static int sof_widget_load_dai(struct snd_soc_component *scomp, int index,
struct snd_sof_widget *swidget, int core,
struct snd_soc_tplg_dapm_widget *tw,
--
2.27.0
