ASoC: sof: ipc4-topology: Add support to sched_domain attribute

Add SOF_TKN_COMP_SCHED_DOMAIN and connect it to struct snd_sof_widget
comp_domain member, with new get_token_comp_domain() function.

The logic is such that if the topology attribute is not present in the
widget node the corresponding IPC4 extension value is taken from the
module's manifest like before. But if the attribute is found and
recognized its value overrides what is there in the manifest.

Signed-off-by: Jyri Sarha <[e-mail]>
Reviewed-by: Péter Ujfalusi <[e-mail]>
Reviewed-by: Ranjani Sridharan <[e-mail]>
Signed-off-by: Peter Ujfalusi <[e-mail]>
Message-ID: <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

include/uapi/sound/sof/tokens.h

···
  */
 #define SOF_TKN_COMP_NO_WNAME_IN_KCONTROL_NAME	417
 
+#define SOF_TKN_COMP_SCHED_DOMAIN		418
+
 /* SSP */
 #define SOF_TKN_INTEL_SSP_CLKS_CONTROL		500
 #define SOF_TKN_INTEL_SSP_MCLK_ID		501

sound/soc/sof/ipc4-topology.c

···
 static DEFINE_IDA(alh_group_ida);
 static DEFINE_IDA(pipeline_ida);
 
+struct sof_comp_domains {
+	const char *name;
+	enum sof_comp_domain domain;
+};
+
+static const struct sof_comp_domains sof_domains[] = {
+	{ "LL", SOF_COMP_DOMAIN_LL, },
+	{ "DP", SOF_COMP_DOMAIN_DP, }
+};
+
+static enum sof_comp_domain find_domain(const char *name)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sof_domains); i++) {
+		if (strcmp(name, sof_domains[i].name) == 0)
+			return sof_domains[i].domain;
+	}
+	/* No valid value found, fall back to manifest value */
+	return SOF_COMP_DOMAIN_UNSET;
+}
+
+static int get_token_comp_domain(void *elem, void *object, u32 offset)
+{
+	u32 *val = (u32 *)((u8 *)object + offset);
+
+	*val = find_domain((const char *)elem);
+	return 0;
+}
+
 static const struct sof_topology_token ipc4_sched_tokens[] = {
 	{SOF_TKN_SCHED_LP_MODE, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
 		offsetof(struct sof_ipc4_pipeline, lp_mode)},
···
 		offsetof(struct snd_sof_widget, uuid)},
 	{SOF_TKN_COMP_CORE_ID, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
 		offsetof(struct snd_sof_widget, core)},
+	{SOF_TKN_COMP_SCHED_DOMAIN, SND_SOC_TPLG_TUPLE_TYPE_STRING, get_token_comp_domain,
+		offsetof(struct snd_sof_widget, comp_domain)},
 };
 
 static const struct sof_topology_token gain_tokens[] = {
···
 
 	msg->extension = SOF_IPC4_MOD_EXT_CORE_ID(swidget->core);
 
-	type = (fw_module->man4_module_entry.type & SOF_IPC4_MODULE_DP) ? 1 : 0;
+	switch (swidget->comp_domain) {
+	case SOF_COMP_DOMAIN_LL:
+		type = 0;
+		break;
+	case SOF_COMP_DOMAIN_DP:
+		type = 1;
+		break;
+	default:
+		type = (fw_module->man4_module_entry.type & SOF_IPC4_MODULE_DP) ? 1 : 0;
+		break;
+	}
 	msg->extension |= SOF_IPC4_MOD_EXT_DOMAIN(type);
 
 	return 0;

sound/soc/sof/ipc4-topology.h

···
 	SOF_IPC4_COPIER_MODULE_CFG_ATTENUATION,
 };
 
+/* Scheduling domain, unset, Low Latency, or Data Processing */
+enum sof_comp_domain {
+	SOF_COMP_DOMAIN_UNSET = 0,	/* Take domain value from manifest */
+	SOF_COMP_DOMAIN_LL,		/* Low Latency scheduling domain */
+	SOF_COMP_DOMAIN_DP,		/* Data Processing scheduling domain */
+};
+
 struct sof_ipc4_copier_config_set_sink_format {
 /* Id of sink */
 	u32 sink_id;

sound/soc/sof/sof-audio.h

···
 	 */
 	bool dynamic_pipeline_widget;
 
+	/* Scheduling domain (enum sof_comp_domain), unset, Low Latency, or Data Processing */
+	u32 comp_domain;
+
 	struct snd_soc_dapm_widget *widget;
 	struct list_head list;	/* list in sdev widget list */
 	struct snd_sof_pipeline *spipe;