+static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct hdmi_spec *spec;
+ int pin_idx;
+
+ spec = codec->spec;
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
+
+ pin_idx = kcontrol->private_value;
+ uinfo->count = spec->pins[pin_idx].sink_eld.eld_size;
+
+ return 0;
+}
+
+static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct hdmi_spec *spec;
+ int pin_idx;
+
+ spec = codec->spec;
+ pin_idx = kcontrol->private_value;
+
+ memcpy(ucontrol->value.bytes.data,
+ spec->pins[pin_idx].sink_eld.eld_buffer, ELD_MAX_SIZE);
+
+ return 0;
+}
+
+static struct snd_kcontrol_new eld_bytes_ctl = {
+ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "ELD",
+ .info = hdmi_eld_ctl_info,
+ .get = hdmi_eld_ctl_get,
+};
+
+static int hdmi_create_eld_ctl(struct hda_codec *codec, int pin_idx,
+ int device)
+{
+ struct snd_kcontrol *kctl;
+ struct hdmi_spec *spec = codec->spec;
+ int err;
+
+ kctl = snd_ctl_new1(&eld_bytes_ctl, codec);
+ if (!kctl)
+ return -ENOMEM;
+ kctl->private_value = pin_idx;
+ kctl->id.device = device;
+
+ err = snd_hda_ctl_add(codec, spec->pins[pin_idx].pin_nid, kctl);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+