Hi Takashi
> > >> From: Kuninori Morimoto <[email protected]>
> > >>
> > >> Current hdmi-codec driver is using hdmi_controls for "ELD" control.
> > >> But, hdmi-codec driver might be used from many HDMIs. In such case,
> > >> they will use same "ELD" name and kernel will indicate below error.
> > >>
> > >> xxx: control x:x:x:ELD:x is already present
> > >>
> > >> hdmi_controls will be registered in soc_probe_component(), and we can
> > >> replace it by component driver probe function.
> > >>
> > >> This patch registers current hdmi_controls in new hdmi_probe().
> > >> If hdmi-codec is used from only 1 device, it will use "ELD" as control
> > >> name
> > >> (We can keep compatibility).
> > >> If hdmi-codec is used from many devices, it will use "ELD.x" as control
> > >> name.
Thanks.
Below patch works well for me.
I will post v2 patch
> ---
> diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
> index 22ed0dc88f0a..13d9cf5b1831 100644
> --- a/sound/soc/codecs/hdmi-codec.c
> +++ b/sound/soc/codecs/hdmi-codec.c
> @@ -399,16 +399,13 @@ static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol
> *kcontrol,
> return 0;
> }
>
> -
> -static const struct snd_kcontrol_new hdmi_controls[] = {
> - {
> - .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 const struct snd_kcontrol_new hdmi_eld_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_codec_new_stream(struct snd_pcm_substream *substream,
> @@ -668,6 +665,7 @@ static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime
> *rtd,
> {
> struct snd_soc_dai_driver *drv = dai->driver;
> struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
> + struct snd_kcontrol *kctl;
> int ret;
>
> dev_dbg(dai->dev, "%s()\n", __func__);
> @@ -686,7 +684,12 @@ static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime
> *rtd,
> hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
> hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
>
> - return 0;
> + /* add ELD ctl with the device number corresponding to the PCM stream */
> + kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
> + if (!kctl)
> + return -ENOMEM;
> + kctl->id.device = rtd->pcm->device;
> + return snd_ctl_add(rtd->card->snd_card, kctl);
> }
>
> static struct snd_soc_dai_driver hdmi_i2s_dai = {
> @@ -732,8 +735,6 @@ static int hdmi_of_xlate_dai_id(struct snd_soc_component
> *component,
>
> static struct snd_soc_codec_driver hdmi_codec = {
> .component_driver = {
> - .controls = hdmi_controls,
> - .num_controls = ARRAY_SIZE(hdmi_controls),
> .dapm_widgets = hdmi_widgets,
> .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
> .dapm_routes = hdmi_routes,
Best regards
---
Kuninori Morimoto
