ASoC: SOF: topology: use new sound control LED layer

Use the new sound control LED layer instead the direct ledtrig_audio_set()
call - see 22d8de62f1 ("ALSA: control - add generic LED trigger module
as the new control layer").

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220329120039.2394138-1-perex@perex.cz
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/control.c

@@ -15,36 +15,6 @@
 #include "sof-priv.h"
 #include "sof-audio.h"
 
-static void update_mute_led(struct snd_sof_control *scontrol,
-			    struct snd_kcontrol *kcontrol,
-			    struct snd_ctl_elem_value *ucontrol)
-{
-	int temp = 0;
-	int mask;
-	int i;
-
-	mask = 1U << snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
-
-	for (i = 0; i < scontrol->num_channels; i++) {
-		if (ucontrol->value.integer.value[i]) {
-			temp |= mask;
-			break;
-		}
-	}
-
-	if (temp == scontrol->led_ctl.led_value)
-		return;
-
-	scontrol->led_ctl.led_value = temp;
-
-#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
-	if (!scontrol->led_ctl.direction)
-		ledtrig_audio_set(LED_AUDIO_MUTE, temp ? LED_OFF : LED_ON);
-	else
-		ledtrig_audio_set(LED_AUDIO_MICMUTE, temp ? LED_OFF : LED_ON);
-#endif
-}
-
 int snd_sof_volume_get(struct snd_kcontrol *kcontrol,
 		       struct snd_ctl_elem_value *ucontrol)
 {
@@ -121,9 +91,6 @@ int snd_sof_switch_put(struct snd_kcontrol *kcontrol,
 	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
 	const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
 
-	if (scontrol->led_ctl.use_led)
-		update_mute_led(scontrol, kcontrol, ucontrol);
-
 	if (tplg_ops->control->switch_put)
 		return tplg_ops->control->switch_put(scontrol, ucontrol);
 

sound/soc/sof/sof-priv.h

@@ -473,6 +473,7 @@ struct snd_sof_dev {
 	struct list_head route_list;
 	struct snd_soc_component *component;
 	u32 enabled_cores_mask; /* keep track of enabled cores */
+	bool led_present;
 
 	/* FW configuration */
 	struct sof_ipc_window *info_window;

sound/soc/sof/topology.c

@@ -773,6 +773,7 @@ static int sof_control_load_volume(struct snd_soc_component *scomp,
 	struct snd_soc_tplg_mixer_control *mc =
 		container_of(hdr, struct snd_soc_tplg_mixer_control, hdr);
 	int tlv[TLV_ITEMS];
+	unsigned int mask;
 	int ret;
 
 	/* validate topology data */
@@ -821,6 +822,16 @@ skip:
 		goto err;
 	}
 
+	if (scontrol->led_ctl.use_led) {
+		mask = scontrol->led_ctl.direction ? SNDRV_CTL_ELEM_ACCESS_MIC_LED :
+							SNDRV_CTL_ELEM_ACCESS_SPK_LED;
+		scontrol->access &= ~SNDRV_CTL_ELEM_ACCESS_LED_MASK;
+		scontrol->access |= mask;
+		kc->access &= ~SNDRV_CTL_ELEM_ACCESS_LED_MASK;
+		kc->access |= mask;
+		sdev->led_present = true;
+	}
+
 	dev_dbg(scomp->dev, "tplg: load kcontrol index %d chans %d\n",
 		scontrol->comp_id, scontrol->num_channels);
 
@@ -2027,6 +2038,7 @@ static struct snd_soc_tplg_ops sof_tplg_ops = {
 
 int snd_sof_load_topology(struct snd_soc_component *scomp, const char *file)
 {
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
 	const struct firmware *fw;
 	int ret;
 
@@ -2049,6 +2061,10 @@ int snd_sof_load_topology(struct snd_soc_component *scomp, const char *file)
 	}
 
 	release_firmware(fw);
+
+	if (ret >= 0 && sdev->led_present)
+		ret = snd_ctl_led_request();
+
 	return ret;
 }
 EXPORT_SYMBOL(snd_sof_load_topology);