ASoC: SOF: Add support for parsing the number of sink/source pins

Add support for parsing the number of sink/source pins
per widget from topology. They will be used to determine
the sink/source queue IDs during widget binding.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Chao Song <chao.song@linux.intel.com>
Suggested-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20221107085706.2550-2-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/uapi/sound/sof/tokens.h b/include/uapi/sound/sof/tokens.h
index 5caf75c..4f48818 100644 (file)
--- a/include/uapi/sound/sof/tokens.h
+++ b/include/uapi/sound/sof/tokens.h
@@ -88,6 +88,8 @@
 #define SOF_TKN_COMP_CPC                       406
 #define SOF_TKN_COMP_IS_PAGES                  409
 #define SOF_TKN_COMP_NUM_AUDIO_FORMATS         410
+#define SOF_TKN_COMP_NUM_SINK_PINS             411
+#define SOF_TKN_COMP_NUM_SOURCE_PINS           412
 
 /* SSP */
 #define SOF_TKN_INTEL_SSP_CLKS_CONTROL         500

diff --git a/sound/soc/sof/sof-audio.h b/sound/soc/sof/sof-audio.h
index 4284ea2..dfca713 100644 (file)
--- a/sound/soc/sof/sof-audio.h
+++ b/sound/soc/sof/sof-audio.h
@@ -23,6 +23,13 @@
 
 #define SOF_AUDIO_PCM_DRV_NAME "sof-audio-component"
 
+/*
+ * The ipc4 firmware only supports up to 8 sink or source pins
+ * per widget, because only 3 bits are used for queue(pin) ID
+ * in ipc4 protocol.
+ */
+#define SOF_WIDGET_MAX_NUM_PINS        8
+
 /* max number of FE PCMs before BEs */
 #define SOF_BE_PCM_BASE                16
 
@@ -387,6 +394,14 @@ struct snd_sof_widget {
        int num_tuples;
        struct snd_sof_tuple *tuples;
 
+       /*
+        * The allowed range for num_sink/source_pins is [0, SOF_WIDGET_MAX_NUM_PINS].
+        * Widgets may have zero sink or source pins, for example the tone widget has
+        * zero sink pins.
+        */
+       u32 num_sink_pins;
+       u32 num_source_pins;
+
        void *private;          /* core does not touch this */
 };
 

diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index 38855dd..e839fcd 100644 (file)
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -392,6 +392,13 @@ static const struct sof_topology_token led_tokens[] = {
                offsetof(struct snd_sof_led_control, direction)},
 };
 
+static const struct sof_topology_token comp_pin_tokens[] = {
+       {SOF_TKN_COMP_NUM_SINK_PINS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
+               offsetof(struct snd_sof_widget, num_sink_pins)},
+       {SOF_TKN_COMP_NUM_SOURCE_PINS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
+               offsetof(struct snd_sof_widget, num_source_pins)},
+};
+
 /**
  * sof_parse_uuid_tokens - Parse multiple sets of UUID tokens
  * @scomp: pointer to soc component
@@ -1259,6 +1266,7 @@ static int sof_widget_ready(struct snd_soc_component *scomp, int index,
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        const struct sof_ipc_tplg_ops *ipc_tplg_ops = sdev->ipc->ops->tplg;
        const struct sof_ipc_tplg_widget_ops *widget_ops = ipc_tplg_ops->widget;
+       struct snd_soc_tplg_private *priv = &tw->priv;
        struct snd_sof_widget *swidget;
        struct snd_sof_dai *dai;
        enum sof_tokens *token_list;
@@ -1277,10 +1285,27 @@ static int sof_widget_ready(struct snd_soc_component *scomp, int index,
        swidget->pipeline_id = index;
        swidget->private = NULL;
 
-       dev_dbg(scomp->dev, "tplg: ready widget id %d pipe %d type %d name : %s stream %s\n",
-               swidget->comp_id, index, swidget->id, tw->name,
-               strnlen(tw->sname, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) > 0
-                       ? tw->sname : "none");
+       ret = sof_parse_tokens(scomp, swidget, comp_pin_tokens,
+                              ARRAY_SIZE(comp_pin_tokens), priv->array,
+                              le32_to_cpu(priv->size));
+       if (ret < 0) {
+               dev_err(scomp->dev, "failed to parse component pin tokens for %s\n",
+                       w->name);
+               return ret;
+       }
+
+       if (swidget->num_sink_pins > SOF_WIDGET_MAX_NUM_PINS ||
+           swidget->num_source_pins > SOF_WIDGET_MAX_NUM_PINS) {
+               dev_err(scomp->dev, "invalid pins for %s: [sink: %d, src: %d]\n",
+                       swidget->widget->name, swidget->num_sink_pins, swidget->num_source_pins);
+               return -EINVAL;
+       }
+
+       dev_dbg(scomp->dev,
+               "tplg: widget %d (%s) is ready [type: %d, pipe: %d, pins: %d / %d, stream: %s]\n",
+               swidget->comp_id, w->name, swidget->id, index,
+               swidget->num_sink_pins, swidget->num_source_pins,
+               strnlen(w->sname, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) > 0 ? w->sname : "none");
 
        token_list = widget_ops[w->id].token_list;
        token_list_size = widget_ops[w->id].token_list_size;