[alsa-devel] [PATCH 1/3] ASoC: mediatek: add sub dai to mtk_base_afe

[KaiChieh Chuang]

In MediaTek SoC chip we have multiple DAI,
such as I2S, ADDA, PCM, etc.

Organize each DAI in to one sub dai,
with its dai driver, controls, widgets, routes.

add mtk_afe_combine_sub_dai() to combine
dai driver from each DAI.

add mtk_afe_add_sub_dai_control() to register
the control, widget, routes to component.

Signed-off-by: KaiChieh Chuang <kaichieh.chuang at mediatek.com>
---
 .../soc/mediatek/common/mtk-afe-platform-driver.c  | 78 ++++++++++++++++++++++
 .../soc/mediatek/common/mtk-afe-platform-driver.h  |  5 ++
 sound/soc/mediatek/common/mtk-base-afe.h           | 18 +++++
 3 files changed, 101 insertions(+)

diff --git a/sound/soc/mediatek/common/mtk-afe-platform-driver.c b/sound/soc/mediatek/common/mtk-afe-platform-driver.c
index 8966ee1..c449188 100644
--- a/sound/soc/mediatek/common/mtk-afe-platform-driver.c
+++ b/sound/soc/mediatek/common/mtk-afe-platform-driver.c
@@ -13,6 +13,84 @@
 #include "mtk-afe-platform-driver.h"
 #include "mtk-base-afe.h"
 
+int mtk_afe_combine_sub_dai(struct mtk_base_afe *afe)
+{
+	struct snd_soc_dai_driver *sub_dai_drivers;
+	size_t num_dai_drivers = 0, dai_idx = 0;
+	int i;
+
+	if (!afe->sub_dais) {
+		dev_err(afe->dev, "%s(), sub_dais == NULL\n", __func__);
+		return -EINVAL;
+	}
+
+	/* calcualte total dai driver size */
+	for (i = 0; i < afe->num_sub_dais; i++) {
+		if (afe->sub_dais[i].dai_drivers &&
+		    afe->sub_dais[i].num_dai_drivers != 0)
+			num_dai_drivers += afe->sub_dais[i].num_dai_drivers;
+	}
+
+	dev_info(afe->dev, "%s(), num of dai %zd\n", __func__, num_dai_drivers);
+
+	/* combine sub_dais */
+	afe->num_dai_drivers = num_dai_drivers;
+	afe->dai_drivers = devm_kcalloc(afe->dev,
+					num_dai_drivers,
+					sizeof(struct snd_soc_dai_driver),
+					GFP_KERNEL);
+	if (!afe->dai_drivers)
+		return -ENOMEM;
+
+	for (i = 0; i < afe->num_sub_dais; i++) {
+		if (afe->sub_dais[i].dai_drivers &&
+		    afe->sub_dais[i].num_dai_drivers != 0) {
+			sub_dai_drivers = afe->sub_dais[i].dai_drivers;
+			/* dai driver */
+			memcpy(&afe->dai_drivers[dai_idx],
+			       sub_dai_drivers,
+			       afe->sub_dais[i].num_dai_drivers *
+			       sizeof(struct snd_soc_dai_driver));
+			dai_idx += afe->sub_dais[i].num_dai_drivers;
+		}
+	}
+
+	return 0;
+}
+
+int mtk_afe_add_sub_dai_control(struct snd_soc_component *component)
+{
+	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
+	int i;
+
+	if (!afe->sub_dais) {
+		dev_err(afe->dev, "%s(), sub_dais == NULL\n", __func__);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < afe->num_sub_dais; i++) {
+		if (afe->sub_dais[i].controls)
+			snd_soc_add_component_controls(component,
+				afe->sub_dais[i].controls,
+				afe->sub_dais[i].num_controls);
+
+		if (afe->sub_dais[i].dapm_widgets)
+			snd_soc_dapm_new_controls(&component->dapm,
+				afe->sub_dais[i].dapm_widgets,
+				afe->sub_dais[i].num_dapm_widgets);
+
+		if (afe->sub_dais[i].dapm_routes)
+			snd_soc_dapm_add_routes(&component->dapm,
+				afe->sub_dais[i].dapm_routes,
+				afe->sub_dais[i].num_dapm_routes);
+	}
+
+	snd_soc_dapm_new_widgets(component->dapm.card);
+
+	return 0;
+
+}
+
 static snd_pcm_uframes_t mtk_afe_pcm_pointer
 			 (struct snd_pcm_substream *substream)
 {
diff --git a/sound/soc/mediatek/common/mtk-afe-platform-driver.h b/sound/soc/mediatek/common/mtk-afe-platform-driver.h
index 1c81d91..0c31fa4 100644
--- a/sound/soc/mediatek/common/mtk-afe-platform-driver.h
+++ b/sound/soc/mediatek/common/mtk-afe-platform-driver.h
@@ -12,5 +12,10 @@
 #define AFE_PCM_NAME "mtk-afe-pcm"
 extern const struct snd_soc_component_driver mtk_afe_pcm_platform;
 
+struct mtk_base_afe;
+struct snd_soc_component;
+
+int mtk_afe_combine_sub_dai(struct mtk_base_afe *afe);
+int mtk_afe_add_sub_dai_control(struct snd_soc_component *component);
 #endif
 
diff --git a/sound/soc/mediatek/common/mtk-base-afe.h b/sound/soc/mediatek/common/mtk-base-afe.h
index c2c5a6c..bcf562f0 100644
--- a/sound/soc/mediatek/common/mtk-base-afe.h
+++ b/sound/soc/mediatek/common/mtk-base-afe.h
@@ -48,6 +48,7 @@ struct mtk_base_irq_data {
 struct device;
 struct mtk_base_afe_memif;
 struct mtk_base_afe_irq;
+struct mtk_base_afe_dai;
 struct regmap;
 struct snd_pcm_substream;
 struct snd_soc_dai;
@@ -71,6 +72,11 @@ struct mtk_base_afe {
 	struct mtk_base_afe_irq *irqs;
 	int irqs_size;
 
+	struct mtk_base_afe_dai *sub_dais;
+	int num_sub_dais;
+	struct snd_soc_dai_driver *dai_drivers;
+	unsigned int num_dai_drivers;
+
 	const struct snd_pcm_hardware *mtk_afe_hardware;
 	int (*memif_fs)(struct snd_pcm_substream *substream,
 			unsigned int rate);
@@ -94,5 +100,17 @@ struct mtk_base_afe_irq {
 	int irq_occupyed;
 };
 
+struct mtk_base_afe_dai {
+	struct snd_soc_dai_driver *dai_drivers;
+	unsigned int num_dai_drivers;
+
+	const struct snd_kcontrol_new *controls;
+	unsigned int num_controls;
+	const struct snd_soc_dapm_widget *dapm_widgets;
+	unsigned int num_dapm_widgets;
+	const struct snd_soc_dapm_route *dapm_routes;
+	unsigned int num_dapm_routes;
+};
+
 #endif
 
-- 
1.9.1