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 its value
overrides what is there in the manifest.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

include/sound/sof/topology.h

@@ -45,6 +45,13 @@ enum sof_comp_type {
 	SOF_COMP_FILEWRITE = 10001,	/**< host test based file IO */
 };
 
+/* Scheduling domain, unset, Low Latency, or Data Processing */
+enum sof_comp_domain {
+	SOF_COMP_DOMAIN_UNSET = 0,
+	SOF_COMP_DOMAIN_LL,
+	SOF_COMP_DOMAIN_DP,
+};
+
 /* XRUN action for component */
 #define SOF_XRUN_STOP		1	/**< stop stream */
 #define SOF_XRUN_UNDER_ZERO	2	/**< send 0s to sink */

include/uapi/sound/sof/tokens.h

@@ -106,6 +106,8 @@
  */
 #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

@@ -127,6 +127,8 @@ static const struct sof_topology_token comp_ext_tokens[] = {
 		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[] = {
@@ -498,6 +500,16 @@ static int sof_ipc4_widget_setup_msg(struct snd_sof_widget *swidget, struct sof_
 	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:
+		break;
+	}
 	msg->extension |= SOF_IPC4_MOD_EXT_DOMAIN(type);
 
 	return 0;

sound/soc/sof/sof-audio.h

@@ -456,6 +456,9 @@ struct snd_sof_widget {
 	 */
 	bool dynamic_pipeline_widget;
 
+	/* Scheduling domain, unset, Low Latency, or Data Processing */
+	enum sof_comp_domain comp_domain;
+
 	struct snd_soc_dapm_widget *widget;
 	struct list_head list;	/* list in sdev widget list */
 	struct snd_sof_pipeline *spipe;
@@ -678,6 +681,7 @@ int get_token_u32(void *elem, void *object, u32 offset);
 int get_token_u16(void *elem, void *object, u32 offset);
 int get_token_comp_format(void *elem, void *object, u32 offset);
 int get_token_dai_type(void *elem, void *object, u32 offset);
+int get_token_comp_domain(void *elem, void *object, u32 offset);
 int get_token_uuid(void *elem, void *object, u32 offset);
 int get_token_string(void *elem, void *object, u32 offset);
 int sof_update_ipc_object(struct snd_soc_component *scomp, void *object, enum sof_tokens token_id,

sound/soc/sof/topology.c

@@ -15,6 +15,7 @@
 #include <linux/workqueue.h>
 #include <sound/tlv.h>
 #include <uapi/sound/sof/tokens.h>
+#include <sound/sof/topology.h>
 #include "sof-priv.h"
 #include "sof-audio.h"
 #include "ops.h"
@@ -317,6 +318,28 @@ static enum sof_ipc_dai_type find_dai(const char *name)
 	return SOF_DAI_INTEL_NONE;
 }
 
+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;
+	}
+
+	return SOF_COMP_DOMAIN_UNSET;
+}
+
 /*
  * Supported Frame format types and lookup, add new ones to end of list.
  */
@@ -405,6 +428,14 @@ int get_token_dai_type(void *elem, void *object, u32 offset)
 	return 0;
 }
 
+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;
+}
+
 /* PCM */
 static const struct sof_topology_token stream_tokens[] = {
 	{SOF_TKN_STREAM_PLAYBACK_COMPATIBLE_D0I3, SND_SOC_TPLG_TUPLE_TYPE_BOOL, get_token_u16,