ASoC: Intel: board_helpers: support dmic link initialization

Add functions for machine drivers to initialize dmic01 and dmic16k DAI
links.

Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Brent Lu <brent.lu@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20231019173411.166759-7-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/sof_board_helpers.c b/sound/soc/intel/boards/sof_board_helpers.c
index 627742c..ce29678 100644 (file)
--- a/sound/soc/intel/boards/sof_board_helpers.c
+++ b/sound/soc/intel/boards/sof_board_helpers.c
@@ -36,9 +36,49 @@ int sof_intel_board_card_late_probe(struct snd_soc_card *card)
 }
 EXPORT_SYMBOL_NS(sof_intel_board_card_late_probe, SND_SOC_INTEL_SOF_BOARD_HELPERS);
 
+/*
+ * DMIC DAI Link
+ */
+static const struct snd_soc_dapm_widget dmic_widgets[] = {
+       SND_SOC_DAPM_MIC("SoC DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route dmic_routes[] = {
+       {"DMic", NULL, "SoC DMIC"},
+};
+
+static int dmic_init(struct snd_soc_pcm_runtime *rtd)
+{
+       struct snd_soc_card *card = rtd->card;
+       int ret;
+
+       ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
+                                       ARRAY_SIZE(dmic_widgets));
+       if (ret) {
+               dev_err(rtd->dev, "fail to add dmic widgets, ret %d\n", ret);
+               return ret;
+       }
+
+       ret = snd_soc_dapm_add_routes(&card->dapm, dmic_routes,
+                                     ARRAY_SIZE(dmic_routes));
+       if (ret) {
+               dev_err(rtd->dev, "fail to add dmic routes, ret %d\n", ret);
+               return ret;
+       }
+
+       return 0;
+}
+
 /*
  * DAI Link Helpers
  */
+static struct snd_soc_dai_link_component dmic_component[] = {
+       {
+               .name = "dmic-codec",
+               .dai_name = "dmic-hifi",
+       }
+};
+
 static struct snd_soc_dai_link_component platform_component[] = {
        {
                /* name might be overridden during probe */
@@ -46,6 +86,58 @@ static struct snd_soc_dai_link_component platform_component[] = {
        }
 };
 
+int sof_intel_board_set_dmic_link(struct device *dev,
+                                 struct snd_soc_dai_link *link, int be_id,
+                                 enum sof_dmic_be_type be_type)
+{
+       struct snd_soc_dai_link_component *cpus;
+
+       /* cpus */
+       cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
+                           GFP_KERNEL);
+       if (!cpus)
+               return -ENOMEM;
+
+       switch (be_type) {
+       case SOF_DMIC_01:
+               dev_dbg(dev, "link %d: dmic01\n", be_id);
+
+               link->name = "dmic01";
+               cpus->dai_name = "DMIC01 Pin";
+               break;
+       case SOF_DMIC_16K:
+               dev_dbg(dev, "link %d: dmic16k\n", be_id);
+
+               link->name = "dmic16k";
+               cpus->dai_name = "DMIC16k Pin";
+               break;
+       default:
+               dev_err(dev, "invalid be type %d\n", be_type);
+               return -EINVAL;
+       }
+
+       link->cpus = cpus;
+       link->num_cpus = 1;
+
+       /* codecs */
+       link->codecs = dmic_component;
+       link->num_codecs = ARRAY_SIZE(dmic_component);
+
+       /* platforms */
+       link->platforms = platform_component;
+       link->num_platforms = ARRAY_SIZE(platform_component);
+
+       link->id = be_id;
+       if (be_type == SOF_DMIC_01)
+               link->init = dmic_init;
+       link->ignore_suspend = 1;
+       link->no_pcm = 1;
+       link->dpcm_capture = 1;
+
+       return 0;
+}
+EXPORT_SYMBOL_NS(sof_intel_board_set_dmic_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);
+
 int sof_intel_board_set_intel_hdmi_link(struct device *dev,
                                        struct snd_soc_dai_link *link, int be_id,
                                        int hdmi_id, bool idisp_codec)

diff --git a/sound/soc/intel/boards/sof_board_helpers.h b/sound/soc/intel/boards/sof_board_helpers.h
index 7a15dda..df99f57 100644 (file)
--- a/sound/soc/intel/boards/sof_board_helpers.h
+++ b/sound/soc/intel/boards/sof_board_helpers.h
@@ -28,6 +28,7 @@ struct sof_rt5682_private {
  * @hdmi: init data for hdmi dai link
  * @codec_type: type of headset codec
  * @amp_type: type of speaker amplifier
+ * @dmic_be_num: number of Intel PCH DMIC BE link
  * @hdmi_num: number of Intel HDMI BE link
  * @rt5682: private data for rt5682 machine driver
  */
@@ -38,6 +39,7 @@ struct sof_card_private {
        enum sof_ssp_codec codec_type;
        enum sof_ssp_codec amp_type;
 
+       int dmic_be_num;
        int hdmi_num;
 
        union {
@@ -45,8 +47,16 @@ struct sof_card_private {
        };
 };
 
+enum sof_dmic_be_type {
+       SOF_DMIC_01,
+       SOF_DMIC_16K,
+};
+
 int sof_intel_board_card_late_probe(struct snd_soc_card *card);
 
+int sof_intel_board_set_dmic_link(struct device *dev,
+                                 struct snd_soc_dai_link *link, int be_id,
+                                 enum sof_dmic_be_type be_type);
 int sof_intel_board_set_intel_hdmi_link(struct device *dev,
                                        struct snd_soc_dai_link *link, int be_id,
                                        int hdmi_id, bool idisp_codec);