ASoC: skl_rt286: Fix to support hdmi channel map support

HDMI registers channel map controls per PCM. As PCMs are not
registered during dai_link init callback, store the pcm ids and
codec DAIs during this init callback.

Register for late probe and call the jack_init API which also
registers channel map in the late probe callback handler.

The patch following the machine driver changes adds the channel
map control in the hdac_hdmi codec driver.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/skl_rt286.c b/sound/soc/intel/boards/skl_rt286.c
index 2016397..06de802 100644 (file)
--- a/sound/soc/intel/boards/skl_rt286.c
+++ b/sound/soc/intel/boards/skl_rt286.c
@@ -30,6 +30,16 @@
 
 static struct snd_soc_jack skylake_headset;
 
+struct skl_hdmi_pcm {
+       struct list_head head;
+       struct snd_soc_dai *codec_dai;
+       int device;
+};
+
+struct skl_rt286_private {
+       struct list_head hdmi_pcm_list;
+};
+
 enum {
        SKL_DPCM_AUDIO_PB = 0,
        SKL_DPCM_AUDIO_CP,
@@ -142,9 +152,20 @@ static int skylake_rt286_codec_init(struct snd_soc_pcm_runtime *rtd)
 
 static int skylake_hdmi_init(struct snd_soc_pcm_runtime *rtd)
 {
+       struct skl_rt286_private *ctx = snd_soc_card_get_drvdata(rtd->card);
        struct snd_soc_dai *dai = rtd->codec_dai;
+       struct skl_hdmi_pcm *pcm;
+
+       pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
+       if (!pcm)
+               return -ENOMEM;
 
-       return hdac_hdmi_jack_init(dai, SKL_DPCM_AUDIO_HDMI1_PB + dai->id);
+       pcm->device = SKL_DPCM_AUDIO_HDMI1_PB + dai->id;
+       pcm->codec_dai = dai;
+
+       list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
+
+       return 0;
 }
 
 static unsigned int rates[] = {
@@ -438,6 +459,21 @@ static struct snd_soc_dai_link skylake_rt286_dais[] = {
        },
 };
 
+static int skylake_card_late_probe(struct snd_soc_card *card)
+{
+       struct skl_rt286_private *ctx = snd_soc_card_get_drvdata(card);
+       struct skl_hdmi_pcm *pcm;
+       int err;
+
+       list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
+               err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device);
+               if (err < 0)
+                       return err;
+       }
+
+       return 0;
+}
+
 /* skylake audio machine driver for SPT + RT286S */
 static struct snd_soc_card skylake_rt286 = {
        .name = "skylake-rt286",
@@ -451,11 +487,21 @@ static struct snd_soc_card skylake_rt286 = {
        .dapm_routes = skylake_rt286_map,
        .num_dapm_routes = ARRAY_SIZE(skylake_rt286_map),
        .fully_routed = true,
+       .late_probe = skylake_card_late_probe,
 };
 
 static int skylake_audio_probe(struct platform_device *pdev)
 {
+       struct skl_rt286_private *ctx;
+
+       ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_ATOMIC);
+       if (!ctx)
+               return -ENOMEM;
+
+       INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
+
        skylake_rt286.dev = &pdev->dev;
+       snd_soc_card_set_drvdata(&skylake_rt286, ctx);
 
        return devm_snd_soc_register_card(&pdev->dev, &skylake_rt286);
 }