ASoC: SOF: topology: Add a token for dropping widget name in kcontrol name

Adds SOF_TKN_COMP_NO_WNAME_IN_KCONTROL_NAME token, and implements
sof_dapm_widget_init() function, and calls the functions from
sof_widget_ready().

sof_dapm_widget_init() copies the token's tuple value to the
no_wname_in_kcontrol_name flag in struct snd_soc_dapm_widget.

If the tuple value for the token in the topology is true, then the
widget name is not added to the mixer name. In practice "gain.2.1 Post
Mixer Analog Playback Volume" becomes just "Post Mixer Analog Playback
Volume".

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

Author: jsarha

include/uapi/sound/sof/tokens.h

@@ -99,7 +99,11 @@
 #define SOF_TKN_COMP_OUTPUT_PIN_BINDING_WNAME	414
 #define SOF_TKN_COMP_NUM_INPUT_AUDIO_FORMATS	415
 #define SOF_TKN_COMP_NUM_OUTPUT_AUDIO_FORMATS	416
-
+/*
+ * The token value is copied to the dapm_widget's
+ * no_wname_in_kcontrol_name.
+ */
+#define SOF_TKN_COMP_NO_WNAME_IN_KCONTROL_NAME	417
 
 /* SSP */
 #define SOF_TKN_INTEL_SSP_CLKS_CONTROL		500

sound/soc/sof/topology.c

@@ -809,6 +809,60 @@ static int sof_parse_tokens(struct snd_soc_component *scomp,  void *object,
 				    array_size, 1, 0);
 }
 
+static void sof_w_no_wname_in_long_name(struct snd_soc_component *scomp,
+					struct snd_soc_dapm_widget *w, int type,
+					struct snd_soc_tplg_vendor_value_elem *v)
+{
+	if (type == SND_SOC_TPLG_TUPLE_TYPE_WORD ||
+	    type == SND_SOC_TPLG_TUPLE_TYPE_SHORT ||
+	    type == SND_SOC_TPLG_TUPLE_TYPE_BYTE ||
+	    type == SND_SOC_TPLG_TUPLE_TYPE_BOOL)
+		w->no_wname_in_kcontrol_name = le32_to_cpu(v->token);
+	else
+		dev_warn(scomp->dev, "Bad tuple type %d\n", type);
+}
+
+static int sof_dapm_widget_init(struct snd_soc_component *scomp,
+				struct snd_soc_dapm_widget *w,
+				struct snd_soc_tplg_vendor_array *array,
+				int array_size)
+{
+	while (array_size > 0) {
+		int asize, type, i;
+
+		asize = le32_to_cpu(array->size);
+
+		/* validate asize */
+		if (asize <= 0) {
+			dev_err(scomp->dev, "error: invalid array size 0x%x\n",
+				asize);
+			return -EINVAL;
+		}
+
+		/* make sure there is enough data before parsing */
+		array_size -= asize;
+		if (array_size < 0) {
+			dev_err(scomp->dev, "error: invalid array size 0x%x\n",
+				asize);
+			return -EINVAL;
+		}
+		type = le32_to_cpu(array->type);
+
+		for (i = 0; i < le32_to_cpu(array->num_elems); i++) {
+			switch (le32_to_cpu(array->value[i].token)) {
+			case SOF_TKN_COMP_NO_WNAME_IN_KCONTROL_NAME:
+				sof_w_no_wname_in_long_name(scomp, w, type, &array->value[i]);
+				break;
+			default:
+			}
+		}
+
+		/* next array */
+		array = (struct snd_soc_tplg_vendor_array *)((u8 *)array + asize);
+	}
+	return 0;
+}
+
 /*
  * Standard Kcontrols.
  */
@@ -1396,6 +1450,10 @@ static int sof_widget_ready(struct snd_soc_component *scomp, int index,
 	ida_init(&swidget->output_queue_ida);
 	ida_init(&swidget->input_queue_ida);
 
+	ret = sof_dapm_widget_init(scomp, w, priv->array, le32_to_cpu(priv->size));
+	if (ret < 0)
+		goto widget_free;
+
 	ret = sof_parse_tokens(scomp, swidget, comp_pin_tokens,
 			       ARRAY_SIZE(comp_pin_tokens), priv->array,
 			       le32_to_cpu(priv->size));