From: Keyon Jie yang.jie@linux.intel.com
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@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com --- 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,