[alsa-devel] [PATCH v2] ASoC: hdmi-codec: ELD control corresponds to the PCM stream
Kuninori Morimoto
kuninori.morimoto.gx at renesas.com
Thu Jul 6 02:39:29 CEST 2017
From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Current hdmi-codec driver is using hdmi_controls for "ELD" control.
But, hdmi-codec driver might be used from many HDMIs. Thus, we need
to correspond device number, otherwise we will receive below error.
xxx: control x:x:x:ELD:x is already present
This patch registers ELD control in .pcm_new by using
.device = rtd->pcm->device to corresponding to PCM stream.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
[Takashi: use snd_ctl_new1()/snd_ctl_add()]
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
v1 -> v2
- change title
- ASoC: hdmi-codec: hdmi_codec_priv includes snd_kcontrol_new
+ ASoC: hdmi-codec: ELD control corresponds to the PCM stream
- hdmi_eld_ctl is now local variable
- Author should be Takashi ?
sound/soc/codecs/hdmi-codec.c | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 22ed0dc..7686a80 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -399,18 +399,6 @@ 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 int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
@@ -668,6 +656,16 @@ 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;
+ 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,
+ .device = rtd->pcm->device,
+ };
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;
+
+ 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,
--
1.9.1
More information about the Alsa-devel
mailing list