ASoC: qcom: Add support for lpass hdmi driver

Upadate lpass cpu and platform driver to support audio over dp.
Also add lpass-hdmi.c and lpass-hdmi.h.

Signed-off-by: Srinivasa Rao <srivasam@codeaurora.org>
Signed-off-by: V Sujith Kumar Reddy <vsujithk@codeaurora.org>

sound/soc/qcom/Kconfig

@@ -12,6 +12,10 @@ config SND_SOC_LPASS_CPU
 	tristate
 	select REGMAP_MMIO
 
+config SND_SOC_LPASS_HDMI
+	tristate
+	select REGMAP_MMIO
+
 config SND_SOC_LPASS_PLATFORM
 	tristate
 	select REGMAP_MMIO
@@ -30,6 +34,7 @@ config SND_SOC_LPASS_SC7180
 	tristate
 	select SND_SOC_LPASS_CPU
 	select SND_SOC_LPASS_PLATFORM
+	select SND_SOC_LPASS_HDMI
 
 config SND_SOC_STORM
 	tristate "ASoC I2S support for Storm boards"

sound/soc/qcom/Makefile

@@ -1,12 +1,14 @@
 # SPDX-License-Identifier: GPL-2.0
 # Platform
 snd-soc-lpass-cpu-objs := lpass-cpu.o
+snd-soc-lpass-hdmi-objs := lpass-hdmi.o
 snd-soc-lpass-platform-objs := lpass-platform.o
 snd-soc-lpass-ipq806x-objs := lpass-ipq806x.o
 snd-soc-lpass-apq8016-objs := lpass-apq8016.o
 snd-soc-lpass-sc7180-objs := lpass-sc7180.o
 
 obj-$(CONFIG_SND_SOC_LPASS_CPU) += snd-soc-lpass-cpu.o
+obj-$(CONFIG_SND_SOC_LPASS_HDMI) += snd-soc-lpass-hdmi.o
 obj-$(CONFIG_SND_SOC_LPASS_PLATFORM) += snd-soc-lpass-platform.o
 obj-$(CONFIG_SND_SOC_LPASS_IPQ806X) += snd-soc-lpass-ipq806x.o
 obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o

sound/soc/qcom/lpass-cpu.c

@@ -589,13 +589,33 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
 						variant->wrdma_channel_start);
 
 	drvdata->lpaif_map = devm_regmap_init_mmio(dev, drvdata->lpaif,
-			&lpass_cpu_regmap_config);
+								&lpass_cpu_regmap_config);
 	if (IS_ERR(drvdata->lpaif_map)) {
 		dev_err(dev, "error initializing regmap: %ld\n",
 			PTR_ERR(drvdata->lpaif_map));
 		return PTR_ERR(drvdata->lpaif_map);
 	}
+#ifdef CONFIG_SND_SOC_LPASS_SC7180
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpass-hdmiif");
 
+	drvdata->hdmiif = devm_ioremap_resource(dev, res);
+	if (IS_ERR((void const __force *)drvdata->hdmiif)) {
+		dev_err(dev, "error mapping reg resource: %ld\n",
+				PTR_ERR((void const __force *)drvdata->hdmiif));
+		return PTR_ERR((void const __force *)drvdata->hdmiif);
+	}
+
+	lpass_hdmi_regmap_config.max_register = LPAIF_HDMI_RDMAPER_REG(variant,
+				variant->hdmi_rdma_channels);
+	drvdata->hdmiif_map = devm_regmap_init_mmio(dev, drvdata->hdmiif,
+				&lpass_hdmi_regmap_config);
+	if (IS_ERR(drvdata->hdmiif_map)) {
+		dev_err(dev, "error initializing regmap: %ld\n",
+		PTR_ERR(drvdata->hdmiif_map));
+		return PTR_ERR(drvdata->hdmiif_map);
+	}
+
+#endif
 	if (variant->init) {
 		ret = variant->init(pdev);
 		if (ret) {
@@ -606,6 +626,9 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
 
 	for (i = 0; i < variant->num_dai; i++) {
 		dai_id = variant->dai_driver[i].id;
+		if (dai_id == LPASS_DP_RX)
+			continue;
+
 		drvdata->mi2s_osr_clk[dai_id] = devm_clk_get(dev,
 					     variant->dai_osr_clk_names[i]);
 		if (IS_ERR(drvdata->mi2s_osr_clk[dai_id])) {
@@ -625,21 +648,29 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
 				"error getting %s: %ld\n",
 				variant->dai_bit_clk_names[i],
 				PTR_ERR(drvdata->mi2s_bit_clk[dai_id]));
+
 			return PTR_ERR(drvdata->mi2s_bit_clk[dai_id]);
 		}
 	}
-
 	/* Allocation for i2sctl regmap fields */
 	drvdata->i2sctl = devm_kzalloc(&pdev->dev, sizeof(struct lpaif_i2sctl),
 					GFP_KERNEL);
 
 	/* Initialize bitfields for dai I2SCTL register */
 	ret = lpass_cpu_init_i2sctl_bitfields(dev, drvdata->i2sctl,
 						drvdata->lpaif_map);
-	if (ret) {
+	if (ret)
 		dev_err(dev, "error init i2sctl field: %d\n", ret);
+
+#ifdef CONFIG_SND_SOC_LPASS_SC7180
+	ret = lpass_hdmi_init_bitfields(dev, drvdata->hdmiif_map);
+	if (ret) {
+		dev_err(dev, "%s error  hdmi init failed\n", __func__);
 		return ret;
 	}
+#else
+	return -EINVAL;
+#endif
 
 	ret = devm_snd_soc_register_component(dev,
 					      &lpass_cpu_comp_driver,