ASoC: Intel: bxt: add channel map support in bxt_da7219_max98357a machine

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.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/bxt_da7219_max98357a.c b/sound/soc/intel/boards/bxt_da7219_max98357a.c
index 876d82d..a9647a2 100644 (file)
--- a/sound/soc/intel/boards/bxt_da7219_max98357a.c
+++ b/sound/soc/intel/boards/bxt_da7219_max98357a.c
@@ -34,6 +34,16 @@
 
 static struct snd_soc_jack broxton_headset;
 
+struct bxt_hdmi_pcm {
+       struct list_head head;
+       struct snd_soc_dai *codec_dai;
+       int device;
+};
+
+struct bxt_card_private {
+       struct list_head hdmi_pcm_list;
+};
+
 enum {
        BXT_DPCM_AUDIO_PB = 0,
        BXT_DPCM_AUDIO_CP,
@@ -147,9 +157,20 @@ static int broxton_da7219_codec_init(struct snd_soc_pcm_runtime *rtd)
 
 static int broxton_hdmi_init(struct snd_soc_pcm_runtime *rtd)
 {
+       struct bxt_card_private *ctx = snd_soc_card_get_drvdata(rtd->card);
        struct snd_soc_dai *dai = rtd->codec_dai;
+       struct bxt_hdmi_pcm *pcm;
+
+       pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
+       if (!pcm)
+               return -ENOMEM;
 
-       return hdac_hdmi_jack_init(dai, BXT_DPCM_AUDIO_HDMI1_PB + dai->id);
+       pcm->device = BXT_DPCM_AUDIO_HDMI1_PB + dai->id;
+       pcm->codec_dai = dai;
+
+       list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
+
+       return 0;
 }
 
 static int broxton_da7219_fe_init(struct snd_soc_pcm_runtime *rtd)
@@ -496,6 +517,21 @@ static struct snd_soc_dai_link broxton_dais[] = {
        },
 };
 
+static int bxt_card_late_probe(struct snd_soc_card *card)
+{
+       struct bxt_card_private *ctx = snd_soc_card_get_drvdata(card);
+       struct bxt_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;
+}
+
 /* broxton audio machine driver for SPT + da7219 */
 static struct snd_soc_card broxton_audio_card = {
        .name = "bxtda7219max",
@@ -509,11 +545,22 @@ static struct snd_soc_card broxton_audio_card = {
        .dapm_routes = broxton_map,
        .num_dapm_routes = ARRAY_SIZE(broxton_map),
        .fully_routed = true,
+       .late_probe = bxt_card_late_probe,
 };
 
 static int broxton_audio_probe(struct platform_device *pdev)
 {
+       struct bxt_card_private *ctx;
+
+       ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_ATOMIC);
+       if (!ctx)
+               return -ENOMEM;
+
+       INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
+
        broxton_audio_card.dev = &pdev->dev;
+       snd_soc_card_set_drvdata(&broxton_audio_card, ctx);
+
        return devm_snd_soc_register_card(&pdev->dev, &broxton_audio_card);
 }