[PATCH v2 03/12] ASoC: hdmi-codec: Rework to support more controls

Maxime Ripard
2021-05-25T13:24:36Z

We're going to add more controls to support the IEC958 output, so let's
rework the control registration a bit to support more of them.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
sound/soc/codecs/hdmi-codec.c | 43 ++++++++++++++++++++++-------------
1 file changed, 27 insertions(+), 16 deletions(-)

diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 1567ba196ab9..65bde6f0ea1c 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -620,21 +620,23 @@ static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |\
SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)

-static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
- struct snd_soc_dai *dai)
-{
- 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,
+struct snd_kcontrol_new hdmi_codec_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,
- .device = rtd->pcm->device,
- };
+ },
+};
+
+static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_dai_driver *drv = dai->driver;
+ struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
+ unsigned int i;
int ret;

ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
@@ -651,12 +653,21 @@ 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;

- /* 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;
+ for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
+ struct snd_kcontrol *kctl;

- return snd_ctl_add(rtd->card->snd_card, kctl);
+ /* add ELD ctl with the device number corresponding to the PCM stream */
+ kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
+ if (!kctl)
+ return -ENOMEM;
+
+ kctl->id.device = rtd->pcm->device;
+ ret = snd_ctl_add(rtd->card->snd_card, kctl);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
}

static int hdmi_dai_probe(struct snd_soc_dai *dai)
--
2.31.1