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: NV Sujith Kumar Reddy <vsujithk@codeaurora.org>
Signed-off-by: NSrinivasa Rao <srivasam@codeaurora.org>
Reviewed-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/1602134223-2562-6-git-send-email-srivasam@codeaurora.orgSigned-off-by: NMark Brown <broonie@kernel.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

 # 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-apq8016.c

@@ -125,7 +125,7 @@ static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = {
 };
 
 static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata,
-					   int direction)
+					   int direction, unsigned int dai_id)
 {
 	struct lpass_variant *v = drvdata->variant;
 	int chan = 0;
@@ -151,7 +151,7 @@ static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata,
 	return chan;
 }
 
-static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
+static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
 {
 	clear_bit(chan, &drvdata->dma_ch_bit_map);
 

sound/soc/qcom/lpass-cpu.c

@@ -478,6 +478,206 @@ static struct regmap_config lpass_cpu_regmap_config = {
 	.cache_type = REGCACHE_FLAT,
 };
 
+static int lpass_hdmi_init_bitfields(struct device *dev, struct regmap *map)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	unsigned int i;
+	struct lpass_hdmi_tx_ctl *tx_ctl;
+	struct regmap_field *legacy_en;
+	struct lpass_vbit_ctrl *vbit_ctl;
+	struct regmap_field *tx_parity;
+	struct lpass_dp_metadata_ctl *meta_ctl;
+	struct lpass_sstream_ctl *sstream_ctl;
+	struct regmap_field *ch_msb;
+	struct regmap_field *ch_lsb;
+	struct lpass_hdmitx_dmactl *tx_dmactl;
+	int rval;
+
+	tx_ctl = devm_kzalloc(dev, sizeof(*tx_ctl), GFP_KERNEL);
+	if (!tx_ctl)
+		return -ENOMEM;
+
+	QCOM_REGMAP_FIELD_ALLOC(dev, map, v->soft_reset, tx_ctl->soft_reset);
+	QCOM_REGMAP_FIELD_ALLOC(dev, map, v->force_reset, tx_ctl->force_reset);
+	drvdata->tx_ctl = tx_ctl;
+
+	QCOM_REGMAP_FIELD_ALLOC(dev, map, v->legacy_en, legacy_en);
+	drvdata->hdmitx_legacy_en = legacy_en;
+
+	vbit_ctl = devm_kzalloc(dev, sizeof(*vbit_ctl), GFP_KERNEL);
+	if (!vbit_ctl)
+		return -ENOMEM;
+
+	QCOM_REGMAP_FIELD_ALLOC(dev, map, v->replace_vbit, vbit_ctl->replace_vbit);
+	QCOM_REGMAP_FIELD_ALLOC(dev, map, v->vbit_stream, vbit_ctl->vbit_stream);
+	drvdata->vbit_ctl = vbit_ctl;
+
+
+	QCOM_REGMAP_FIELD_ALLOC(dev, map, v->calc_en, tx_parity);
+	drvdata->hdmitx_parity_calc_en = tx_parity;
+
+	meta_ctl = devm_kzalloc(dev, sizeof(*meta_ctl), GFP_KERNEL);
+	if (!meta_ctl)
+		return -ENOMEM;
+
+	rval = devm_regmap_field_bulk_alloc(dev, map, &meta_ctl->mute, &v->mute, 7);
+	if (rval)
+		return rval;
+	drvdata->meta_ctl = meta_ctl;
+
+	sstream_ctl = devm_kzalloc(dev, sizeof(*sstream_ctl), GFP_KERNEL);
+	if (!sstream_ctl)
+		return -ENOMEM;
+
+	rval = devm_regmap_field_bulk_alloc(dev, map, &sstream_ctl->sstream_en, &v->sstream_en, 9);
+	if (rval)
+		return rval;
+
+	drvdata->sstream_ctl = sstream_ctl;
+
+	for (i = 0; i < LPASS_MAX_HDMI_DMA_CHANNELS; i++) {
+		QCOM_REGMAP_FIELD_ALLOC(dev, map, v->msb_bits, ch_msb);
+		drvdata->hdmitx_ch_msb[i] = ch_msb;
+
+		QCOM_REGMAP_FIELD_ALLOC(dev, map, v->lsb_bits, ch_lsb);
+		drvdata->hdmitx_ch_lsb[i] = ch_lsb;
+
+		tx_dmactl = devm_kzalloc(dev, sizeof(*tx_dmactl), GFP_KERNEL);
+		if (!tx_dmactl)
+			return -ENOMEM;
+
+		QCOM_REGMAP_FIELD_ALLOC(dev, map, v->use_hw_chs, tx_dmactl->use_hw_chs);
+		QCOM_REGMAP_FIELD_ALLOC(dev, map, v->use_hw_usr, tx_dmactl->use_hw_usr);
+		QCOM_REGMAP_FIELD_ALLOC(dev, map, v->hw_chs_sel, tx_dmactl->hw_chs_sel);
+		QCOM_REGMAP_FIELD_ALLOC(dev, map, v->hw_usr_sel, tx_dmactl->hw_usr_sel);
+		drvdata->hdmi_tx_dmactl[i] = tx_dmactl;
+	}
+	return 0;
+}
+
+static bool lpass_hdmi_regmap_writeable(struct device *dev, unsigned int reg)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	int i;
+
+	if (reg == LPASS_HDMI_TX_CTL_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_VBIT_CTL_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_PARITY_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_DP_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_SSTREAM_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMITX_APP_IRQEN_REG(v))
+		return true;
+	if (reg == LPASS_HDMITX_APP_IRQCLEAR_REG(v))
+		return true;
+
+	for (i = 0; i < v->hdmi_rdma_channels; i++) {
+		if (reg == LPASS_HDMI_TX_CH_LSB_ADDR(v, i))
+			return true;
+		if (reg == LPASS_HDMI_TX_CH_MSB_ADDR(v, i))
+			return true;
+		if (reg == LPASS_HDMI_TX_DMA_ADDR(v, i))
+			return true;
+	}
+
+	for (i = 0; i < v->rdma_channels; ++i) {
+		if (reg == LPAIF_HDMI_RDMACTL_REG(v, i))
+			return true;
+		if (reg == LPAIF_HDMI_RDMABASE_REG(v, i))
+			return true;
+		if (reg == LPAIF_HDMI_RDMABUFF_REG(v, i))
+			return true;
+		if (reg == LPAIF_HDMI_RDMAPER_REG(v, i))
+			return true;
+	}
+	return false;
+}
+
+static bool lpass_hdmi_regmap_readable(struct device *dev, unsigned int reg)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	int i;
+
+	if (reg == LPASS_HDMI_TX_CTL_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_VBIT_CTL_ADDR(v))
+		return true;
+
+	for (i = 0; i < v->hdmi_rdma_channels; i++) {
+		if (reg == LPASS_HDMI_TX_CH_LSB_ADDR(v, i))
+			return true;
+		if (reg == LPASS_HDMI_TX_CH_MSB_ADDR(v, i))
+			return true;
+		if (reg == LPASS_HDMI_TX_DMA_ADDR(v, i))
+			return true;
+	}
+
+	if (reg == LPASS_HDMI_TX_PARITY_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_DP_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_SSTREAM_ADDR(v))
+		return true;
+	if (reg == LPASS_HDMITX_APP_IRQEN_REG(v))
+		return true;
+	if (reg == LPASS_HDMITX_APP_IRQSTAT_REG(v))
+		return true;
+
+	for (i = 0; i < v->rdma_channels; ++i) {
+		if (reg == LPAIF_HDMI_RDMACTL_REG(v, i))
+			return true;
+		if (reg == LPAIF_HDMI_RDMABASE_REG(v, i))
+			return true;
+		if (reg == LPAIF_HDMI_RDMABUFF_REG(v, i))
+			return true;
+		if (reg == LPAIF_HDMI_RDMAPER_REG(v, i))
+			return true;
+		if (reg == LPAIF_HDMI_RDMACURR_REG(v, i))
+			return true;
+	}
+
+	return false;
+}
+
+static bool lpass_hdmi_regmap_volatile(struct device *dev, unsigned int reg)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	int i;
+
+	if (reg == LPASS_HDMITX_APP_IRQSTAT_REG(v))
+		return true;
+	if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v))
+		return true;
+
+	for (i = 0; i < v->rdma_channels; ++i) {
+		if (reg == LPAIF_HDMI_RDMACURR_REG(v, i))
+			return true;
+	}
+	return false;
+}
+
+struct regmap_config lpass_hdmi_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.writeable_reg = lpass_hdmi_regmap_writeable,
+	.readable_reg = lpass_hdmi_regmap_readable,
+	.volatile_reg = lpass_hdmi_regmap_volatile,
+	.cache_type = REGCACHE_FLAT,
+};
+
 static unsigned int of_lpass_cpu_parse_sd_lines(struct device *dev,
 						struct device_node *node,
 						const char *name)
@@ -535,7 +735,10 @@ static void of_lpass_cpu_parse_dai_data(struct device *dev,
 			dev_err(dev, "valid dai id not found: %d\n", ret);
 			continue;
 		}
-
+		if (id == LPASS_DP_RX) {
+			data->hdmi_port_enable = 1;
+			dev_err(dev, "HDMI Port is enabled: %d\n", id);
+		} else {
 			data->mi2s_playback_sd_mode[id] =
 				of_lpass_cpu_parse_sd_lines(dev, node,
 							    "qcom,playback-sd-lines");
@@ -543,6 +746,7 @@ static void of_lpass_cpu_parse_dai_data(struct device *dev,
 				of_lpass_cpu_parse_sd_lines(dev, node,
 						    "qcom,capture-sd-lines");
 		}
+	}
 }
 
 int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
@@ -596,6 +800,27 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
 		return PTR_ERR(drvdata->lpaif_map);
 	}
 
+	if (drvdata->hdmi_port_enable) {
+		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);
+		}
+	}
+
 	if (variant->init) {
 		ret = variant->init(pdev);
 		if (ret) {
@@ -606,6 +831,9 @@ 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])) {
@@ -641,6 +869,13 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	if (drvdata->hdmi_port_enable) {
+		ret = lpass_hdmi_init_bitfields(dev, drvdata->hdmiif_map);
+		if (ret) {
+			dev_err(dev, "%s error  hdmi init failed\n", __func__);
+			return ret;
+		}
+	}
 	ret = devm_snd_soc_register_component(dev,
 					      &lpass_cpu_comp_driver,
 					      variant->dai_driver,

sound/soc/qcom/lpass-hdmi.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020 The Linux Foundation. All rights reserved.
+ *
+ * lpass-hdmi.c -- ALSA SoC HDMI-CPU DAI driver for QTi LPASS HDMI
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <sound/pcm_params.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <dt-bindings/sound/sc7180-lpass.h>
+#include "lpass-lpaif-reg.h"
+#include "lpass.h"
+
+static int lpass_hdmi_daiops_hw_params(struct snd_pcm_substream *substream,
+		struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
+	snd_pcm_format_t format = params_format(params);
+	unsigned int rate = params_rate(params);
+	unsigned int channels = params_channels(params);
+	unsigned int ret;
+	unsigned int bitwidth;
+	unsigned int word_length;
+	unsigned int ch_sts_buf0;
+	unsigned int ch_sts_buf1;
+	unsigned int data_format;
+	unsigned int sampling_freq;
+	unsigned int ch = 0;
+	struct lpass_dp_metadata_ctl *meta_ctl = drvdata->meta_ctl;
+	struct lpass_sstream_ctl *sstream_ctl = drvdata->sstream_ctl;
+
+	bitwidth = snd_pcm_format_width(format);
+	if (bitwidth < 0) {
+		dev_err(dai->dev, "%s invalid bit width given : %d\n",
+					__func__, bitwidth);
+		return bitwidth;
+	}
+
+	switch (bitwidth) {
+	case 16:
+		word_length = LPASS_DP_AUDIO_BITWIDTH16;
+		break;
+	case 24:
+		word_length = LPASS_DP_AUDIO_BITWIDTH24;
+		break;
+	default:
+		dev_err(dai->dev, "%s invalid bit width given : %d\n",
+					__func__, bitwidth);
+		return -EINVAL;
+	}
+
+	switch (rate) {
+	case 32000:
+		sampling_freq = LPASS_SAMPLING_FREQ32;
+		break;
+	case 44100:
+		sampling_freq = LPASS_SAMPLING_FREQ44;
+		break;
+	case 48000:
+		sampling_freq = LPASS_SAMPLING_FREQ48;
+		break;
+	default:
+		dev_err(dai->dev, "%s invalid bit width given : %d\n",
+					__func__, bitwidth);
+		return -EINVAL;
+	}
+	data_format = LPASS_DATA_FORMAT_LINEAR;
+	ch_sts_buf0 = (((data_format << LPASS_DATA_FORMAT_SHIFT) & LPASS_DATA_FORMAT_MASK)
+				| ((sampling_freq << LPASS_FREQ_BIT_SHIFT) & LPASS_FREQ_BIT_MASK));
+	ch_sts_buf1 = (word_length) & LPASS_WORDLENGTH_MASK;
+
+	ret = regmap_field_write(drvdata->tx_ctl->soft_reset, LPASS_TX_CTL_RESET);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->tx_ctl->soft_reset, LPASS_TX_CTL_CLEAR);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmitx_legacy_en, LPASS_HDMITX_LEGACY_DISABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmitx_parity_calc_en, HDMITX_PARITY_CALC_EN);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->vbit_ctl->replace_vbit, REPLACE_VBIT);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->vbit_ctl->vbit_stream, LINEAR_PCM_DATA);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmitx_ch_msb[0], ch_sts_buf1);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmitx_ch_lsb[0], ch_sts_buf0);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->use_hw_chs, HW_MODE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->hw_chs_sel, SW_MODE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->use_hw_usr, HW_MODE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->hw_usr_sel, SW_MODE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(meta_ctl->mute, LPASS_MUTE_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(meta_ctl->as_sdp_cc, channels - 1);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(meta_ctl->as_sdp_ct, LPASS_META_DEFAULT_VAL);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(meta_ctl->aif_db4, LPASS_META_DEFAULT_VAL);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(meta_ctl->frequency, sampling_freq);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(meta_ctl->mst_index, LPASS_META_DEFAULT_VAL);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(meta_ctl->dptx_index, LPASS_META_DEFAULT_VAL);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->sstream_en, LPASS_SSTREAM_DISABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->dma_sel, ch);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->auto_bbit_en, LPASS_SSTREAM_DEFAULT_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->layout, LPASS_SSTREAM_DEFAULT_DISABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->layout_sp, LPASS_LAYOUT_SP_DEFAULT);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->dp_audio, LPASS_SSTREAM_DEFAULT_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->set_sp_on_en, LPASS_SSTREAM_DEFAULT_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->dp_sp_b_hw_en, LPASS_SSTREAM_DEFAULT_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(sstream_ctl->dp_staffing_en, LPASS_SSTREAM_DEFAULT_ENABLE);
+	if (ret)
+		return ret;
+
+	return ret;
+}
+
+static int lpass_hdmi_daiops_prepare(struct snd_pcm_substream *substream,
+		struct snd_soc_dai *dai)
+{
+	int ret;
+	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
+
+	ret = regmap_field_write(drvdata->sstream_ctl->sstream_en, LPASS_SSTREAM_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(drvdata->meta_ctl->mute, LPASS_MUTE_DISABLE);
+	if (ret)
+		return ret;
+
+	return ret;
+}
+
+static int lpass_hdmi_daiops_trigger(struct snd_pcm_substream *substream,
+		int cmd, struct snd_soc_dai *dai)
+{
+	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
+	struct lpass_dp_metadata_ctl *meta_ctl = drvdata->meta_ctl;
+	struct lpass_sstream_ctl *sstream_ctl = drvdata->sstream_ctl;
+	int ret = -EINVAL;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		ret = regmap_field_write(sstream_ctl->sstream_en, LPASS_SSTREAM_ENABLE);
+		if (ret)
+			return ret;
+
+		ret = regmap_field_write(meta_ctl->mute, LPASS_MUTE_DISABLE);
+		if (ret)
+			return ret;
+
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		ret = regmap_field_write(sstream_ctl->sstream_en, LPASS_SSTREAM_DISABLE);
+		if (ret)
+			return ret;
+
+		ret = regmap_field_write(meta_ctl->mute, LPASS_MUTE_ENABLE);
+		if (ret)
+			return ret;
+
+		ret = regmap_field_write(sstream_ctl->dp_audio, 0);
+		if (ret)
+			return ret;
+
+		break;
+	}
+	return ret;
+}
+
+const struct snd_soc_dai_ops asoc_qcom_lpass_hdmi_dai_ops = {
+	.hw_params	= lpass_hdmi_daiops_hw_params,
+	.prepare	= lpass_hdmi_daiops_prepare,
+	.trigger	= lpass_hdmi_daiops_trigger,
+};
+EXPORT_SYMBOL_GPL(asoc_qcom_lpass_hdmi_dai_ops);
+
+MODULE_DESCRIPTION("QTi LPASS HDMI Driver");
+MODULE_LICENSE("GPL v2");

sound/soc/qcom/lpass-hdmi.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2020 The Linux Foundation. All rights reserved.
+ *
+ * lpass_hdmi.h - Definitions for the QTi LPASS HDMI
+ */
+
+#ifndef __LPASS_HDMI_H__
+#define __LPASS_HDMI_H__
+
+#include <linux/regmap.h>
+
+#define LPASS_HDMITX_LEGACY_DISABLE		0x0
+#define LPASS_HDMITX_LEGACY_ENABLE		0x1
+#define LPASS_DP_AUDIO_BITWIDTH16		0x0
+#define LPASS_DP_AUDIO_BITWIDTH24		0xb
+#define LPASS_DATA_FORMAT_SHIFT			0x1
+#define LPASS_FREQ_BIT_SHIFT			24
+#define LPASS_DATA_FORMAT_LINEAR		0x0
+#define LPASS_DATA_FORMAT_NON_LINEAR	0x1
+#define LPASS_SAMPLING_FREQ32			0x3
+#define LPASS_SAMPLING_FREQ44			0x0
+#define LPASS_SAMPLING_FREQ48			0x2
+#define LPASS_TX_CTL_RESET				0x1
+#define LPASS_TX_CTL_CLEAR				0x0
+#define LPASS_SSTREAM_ENABLE			1
+#define LPASS_SSTREAM_DISABLE			0
+#define LPASS_LAYOUT_SP_DEFAULT			0xf
+#define LPASS_SSTREAM_DEFAULT_ENABLE	1
+#define LPASS_SSTREAM_DEFAULT_DISABLE	0
+#define LPASS_MUTE_ENABLE				1
+#define LPASS_MUTE_DISABLE				0
+#define LPASS_META_DEFAULT_VAL			0
+#define HW_MODE							1
+#define SW_MODE							0
+#define LEGACY_LPASS_LPAIF				1
+#define LEGACY_LPASS_HDMI				0
+#define REPLACE_VBIT					0x1
+#define LINEAR_PCM_DATA					0x0
+#define NON_LINEAR_PCM_DATA				0x1
+#define HDMITX_PARITY_CALC_EN			0x1
+#define HDMITX_PARITY_CALC_DIS			0x0
+#define LPASS_DATA_FORMAT_MASK			GENMASK(1, 1)
+#define LPASS_WORDLENGTH_MASK			GENMASK(3, 0)
+#define LPASS_FREQ_BIT_MASK				GENMASK(27, 24)
+
+#define LPASS_HDMI_TX_CTL_ADDR(v)		(v->hdmi_tx_ctl_addr)
+#define LPASS_HDMI_TX_LEGACY_ADDR(v)	(v->hdmi_legacy_addr)
+#define LPASS_HDMI_TX_VBIT_CTL_ADDR(v)	(v->hdmi_vbit_addr)
+#define LPASS_HDMI_TX_PARITY_ADDR(v)	(v->hdmi_parity_addr)
+#define LPASS_HDMI_TX_DP_ADDR(v)		(v->hdmi_DP_addr)
+#define LPASS_HDMI_TX_SSTREAM_ADDR(v)	(v->hdmi_sstream_addr)
+
+#define LPASS_HDMI_TX_CH_LSB_ADDR(v, port) \
+		(v->hdmi_ch_lsb_addr + v->ch_stride * (port))
+#define LPASS_HDMI_TX_CH_MSB_ADDR(v, port) \
+		(v->hdmi_ch_msb_addr + v->ch_stride * (port))
+#define LPASS_HDMI_TX_DMA_ADDR(v, port) \
+		(v->hdmi_dmactl_addr + v->hdmi_dma_stride * (port))
+
+struct lpass_sstream_ctl {
+	struct regmap_field *sstream_en;
+	struct regmap_field *dma_sel;
+	struct regmap_field *auto_bbit_en;
+	struct regmap_field *layout;
+	struct regmap_field *layout_sp;
+	struct regmap_field *set_sp_on_en;
+	struct regmap_field *dp_audio;
+	struct regmap_field *dp_staffing_en;
+	struct regmap_field *dp_sp_b_hw_en;
+};
+
+struct lpass_dp_metadata_ctl {
+	struct regmap_field *mute;
+	struct regmap_field *as_sdp_cc;
+	struct regmap_field *as_sdp_ct;
+	struct regmap_field *aif_db4;
+	struct regmap_field *frequency;
+	struct regmap_field *mst_index;
+	struct regmap_field *dptx_index;
+};
+
+struct lpass_hdmi_tx_ctl {
+	struct regmap_field *soft_reset;
+	struct regmap_field *force_reset;
+};
+
+struct lpass_hdmitx_dmactl {
+	struct regmap_field *use_hw_chs;
+	struct regmap_field *use_hw_usr;
+	struct regmap_field *hw_chs_sel;
+	struct regmap_field *hw_usr_sel;
+};
+
+struct lpass_vbit_ctrl {
+		struct regmap_field *replace_vbit;
+		struct regmap_field *vbit_stream;
+};
+
+extern const struct snd_soc_dai_ops asoc_qcom_lpass_hdmi_dai_ops;
+
+#endif /* __LPASS_HDMI_H__ */

sound/soc/qcom/lpass-ipq806x.c

@@ -96,7 +96,7 @@ static int ipq806x_lpass_exit(struct platform_device *pdev)
 	return 0;
 }
 
-static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir)
+static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir, unsigned int dai_id)
 {
 	if (dir == SNDRV_PCM_STREAM_PLAYBACK)
 		return IPQ806X_LPAIF_RDMA_CHAN_MI2S;
@@ -104,7 +104,7 @@ static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir)
 		return -EINVAL;
 }
 
-static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
+static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
 {
 	return 0;
 }

sound/soc/qcom/lpass-lpaif-reg.h

@@ -70,6 +70,14 @@
 #define LPAIF_IRQSTAT_REG(v, port)	LPAIF_IRQ_REG_ADDR(v, 0x4, (port))
 #define LPAIF_IRQCLEAR_REG(v, port)	LPAIF_IRQ_REG_ADDR(v, 0xC, (port))
 
+
+#define LPASS_HDMITX_APP_IRQ_REG_ADDR(v, addr)  \
+	((v->hdmi_irq_reg_base) + (addr))
+
+#define LPASS_HDMITX_APP_IRQEN_REG(v)			LPASS_HDMITX_APP_IRQ_REG_ADDR(v, 0x4)
+#define LPASS_HDMITX_APP_IRQSTAT_REG(v)			LPASS_HDMITX_APP_IRQ_REG_ADDR(v, 0x8)
+#define LPASS_HDMITX_APP_IRQCLEAR_REG(v)		LPASS_HDMITX_APP_IRQ_REG_ADDR(v, 0xC)
+
 #define LPAIF_IRQ_BITSTRIDE		3
 
 #define LPAIF_IRQ_PER(chan)		(1 << (LPAIF_IRQ_BITSTRIDE * (chan)))
@@ -77,8 +85,22 @@
 #define LPAIF_IRQ_ERR(chan)		(4 << (LPAIF_IRQ_BITSTRIDE * (chan)))
 
 #define LPAIF_IRQ_ALL(chan)		(7 << (LPAIF_IRQ_BITSTRIDE * (chan)))
+#define LPAIF_IRQ_HDMI_REQ_ON_PRELOAD(chan)	(1 << (14 + chan))
+#define LPAIF_IRQ_HDMI_SDEEP_AUD_DIS(chan)	(1 << (24 + chan))
+#define LPAIF_IRQ_HDMI_METADONE		BIT(23)
 
 /* LPAIF DMA */
+#define LPAIF_HDMI_RDMA_REG_ADDR(v, addr, chan) \
+	(v->hdmi_rdma_reg_base + (addr) + v->hdmi_rdma_reg_stride * (chan))
+
+#define LPAIF_HDMI_RDMACTL_AUDINTF(id)	(id << LPAIF_RDMACTL_AUDINTF_SHIFT)
+
+#define LPAIF_HDMI_RDMACTL_REG(v, chan)		LPAIF_HDMI_RDMA_REG_ADDR(v, 0x00, (chan))
+#define LPAIF_HDMI_RDMABASE_REG(v, chan)	LPAIF_HDMI_RDMA_REG_ADDR(v, 0x04, (chan))
+#define	LPAIF_HDMI_RDMABUFF_REG(v, chan)	LPAIF_HDMI_RDMA_REG_ADDR(v, 0x08, (chan))
+#define LPAIF_HDMI_RDMACURR_REG(v, chan)	LPAIF_HDMI_RDMA_REG_ADDR(v, 0x0C, (chan))
+#define	LPAIF_HDMI_RDMAPER_REG(v, chan)		LPAIF_HDMI_RDMA_REG_ADDR(v, 0x10, (chan))
+#define	LPAIF_HDMI_RDMAPERCNT_REG(v, chan)	LPAIF_HDMI_RDMA_REG_ADDR(v, 0x14, (chan))
 
 #define LPAIF_RDMA_REG_ADDR(v, addr, chan) \
 	(v->rdma_reg_base + (addr) + v->rdma_reg_stride * (chan))
@@ -103,17 +125,22 @@
 #define	LPAIF_WRDMAPER_REG(v, chan)	LPAIF_WRDMA_REG_ADDR(v, 0x10, (chan))
 #define	LPAIF_WRDMAPERCNT_REG(v, chan)	LPAIF_WRDMA_REG_ADDR(v, 0x14, (chan))
 
-#define __LPAIF_DMA_REG(v, chan, dir, reg)  \
-	(dir ==  SNDRV_PCM_STREAM_PLAYBACK) ? \
-		LPAIF_RDMA##reg##_REG(v, chan) : \
-		LPAIF_WRDMA##reg##_REG(v, chan)
-
-#define LPAIF_DMACTL_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir, CTL)
-#define LPAIF_DMABASE_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir, BASE)
-#define	LPAIF_DMABUFF_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir, BUFF)
-#define LPAIF_DMACURR_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir, CURR)
-#define	LPAIF_DMAPER_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir, PER)
-#define	LPAIF_DMAPERCNT_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir, PERCNT)
+#define LPAIF_INTFDMA_REG(v, chan, reg, dai_id)  \
+		((v->dai_driver[dai_id].id ==  LPASS_DP_RX) ? \
+		LPAIF_HDMI_RDMA##reg##_REG(v, chan) : \
+		 LPAIF_RDMA##reg##_REG(v, chan))
+
+#define __LPAIF_DMA_REG(v, chan, dir, reg, dai_id)  \
+	((dir ==  SNDRV_PCM_STREAM_PLAYBACK) ? \
+		(LPAIF_INTFDMA_REG(v, chan, reg, dai_id)) : \
+		LPAIF_WRDMA##reg##_REG(v, chan))
+
+#define LPAIF_DMACTL_REG(v, chan, dir, dai_id) __LPAIF_DMA_REG(v, chan, dir, CTL, dai_id)
+#define LPAIF_DMABASE_REG(v, chan, dir, dai_id) __LPAIF_DMA_REG(v, chan, dir, BASE, dai_id)
+#define	LPAIF_DMABUFF_REG(v, chan, dir, dai_id) __LPAIF_DMA_REG(v, chan, dir, BUFF, dai_id)
+#define LPAIF_DMACURR_REG(v, chan, dir, dai_id) __LPAIF_DMA_REG(v, chan, dir, CURR, dai_id)
+#define	LPAIF_DMAPER_REG(v, chan, dir, dai_id) __LPAIF_DMA_REG(v, chan, dir, PER, dai_id)
+#define	LPAIF_DMAPERCNT_REG(v, chan, dir, dai_id) __LPAIF_DMA_REG(v, chan, dir, PERCNT, dai_id)
 
 #define LPAIF_DMACTL_BURSTEN_SINGLE	0
 #define LPAIF_DMACTL_BURSTEN_INCR4	1

sound/soc/qcom/lpass.h

 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010-2011,2013-2015,2020 The Linux Foundation. All rights reserved.
  *
  * lpass.h - Definitions for the QTi LPASS
  */
@@ -12,10 +12,20 @@
 #include <linux/compiler.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
+#include <dt-bindings/sound/sc7180-lpass.h>
+#include "lpass-hdmi.h"
 
 #define LPASS_AHBIX_CLOCK_FREQUENCY		131072000
 #define LPASS_MAX_MI2S_PORTS			(8)
 #define LPASS_MAX_DMA_CHANNELS			(8)
+#define LPASS_MAX_HDMI_DMA_CHANNELS		(4)
+
+#define QCOM_REGMAP_FIELD_ALLOC(d, m, f, mf)    \
+	do { \
+		mf = devm_regmap_field_alloc(d, m, f);     \
+		if (IS_ERR(mf))                \
+			return -EINVAL;         \
+	} while (0)
 
 struct lpaif_i2sctl {
 	struct regmap_field *loopback;
@@ -37,6 +47,9 @@ struct lpaif_dmactl {
 	struct regmap_field *fifowm;
 	struct regmap_field *enable;
 	struct regmap_field *dyncclk;
+	struct regmap_field *burst8;
+	struct regmap_field *burst16;
+	struct regmap_field *dynburst;
 };
 
 /* Both the CPU DAI and platform drivers will access this data */
@@ -54,24 +67,29 @@ struct lpass_data {
 	/* MI2S SD lines to use for playback/capture */
 	unsigned int mi2s_playback_sd_mode[LPASS_MAX_MI2S_PORTS];
 	unsigned int mi2s_capture_sd_mode[LPASS_MAX_MI2S_PORTS];
+	int hdmi_port_enable;
 
 	/* low-power audio interface (LPAIF) registers */
 	void __iomem *lpaif;
+	void __iomem *hdmiif;
 
 	/* regmap backed by the low-power audio interface (LPAIF) registers */
 	struct regmap *lpaif_map;
+	struct regmap *hdmiif_map;
 
 	/* interrupts from the low-power audio interface (LPAIF) */
 	int lpaif_irq;
-
+	int hdmiif_irq;
 	/* SOC specific variations in the LPASS IP integration */
 	struct lpass_variant *variant;
 
 	/* bit map to keep track of static channel allocations */
 	unsigned long dma_ch_bit_map;
+	unsigned long hdmi_dma_ch_bit_map;
 
 	/* used it for handling interrupt per dma channel */
 	struct snd_pcm_substream *substream[LPASS_MAX_DMA_CHANNELS];
+	struct snd_pcm_substream *hdmi_substream[LPASS_MAX_HDMI_DMA_CHANNELS];
 
 	/* SOC specific clock list */
 	struct clk_bulk_data *clks;
@@ -81,22 +99,36 @@ struct lpass_data {
 	struct lpaif_i2sctl *i2sctl;
 	struct lpaif_dmactl *rd_dmactl;
 	struct lpaif_dmactl *wr_dmactl;
+	struct lpaif_dmactl *hdmi_rd_dmactl;
+	/* Regmap fields of HDMI_CTRL registers*/
+	struct regmap_field *hdmitx_legacy_en;
+	struct regmap_field *hdmitx_parity_calc_en;
+	struct regmap_field *hdmitx_ch_msb[LPASS_MAX_HDMI_DMA_CHANNELS];
+	struct regmap_field *hdmitx_ch_lsb[LPASS_MAX_HDMI_DMA_CHANNELS];
+	struct lpass_hdmi_tx_ctl *tx_ctl;
+	struct lpass_vbit_ctrl *vbit_ctl;
+	struct lpass_hdmitx_dmactl *hdmi_tx_dmactl[LPASS_MAX_HDMI_DMA_CHANNELS];
+	struct lpass_dp_metadata_ctl *meta_ctl;
+	struct lpass_sstream_ctl *sstream_ctl;
 };
 
 /* Vairant data per each SOC */
 struct lpass_variant {
-	u32	i2sctrl_reg_base;
-	u32	i2sctrl_reg_stride;
-	u32	i2s_ports;
 	u32	irq_reg_base;
 	u32	irq_reg_stride;
 	u32	irq_ports;
 	u32	rdma_reg_base;
 	u32	rdma_reg_stride;
 	u32	rdma_channels;
+	u32	hdmi_rdma_reg_base;
+	u32	hdmi_rdma_reg_stride;
+	u32	hdmi_rdma_channels;
 	u32	wrdma_reg_base;
 	u32	wrdma_reg_stride;
 	u32	wrdma_channels;
+	u32	i2sctrl_reg_base;
+	u32	i2sctrl_reg_stride;
+	u32	i2s_ports;
 
 	/* I2SCTL Register fields */
 	struct reg_field loopback;
@@ -109,6 +141,78 @@ struct lpass_variant {
 	struct reg_field wssrc;
 	struct reg_field bitwidth;
 
+	u32	hdmi_irq_reg_base;
+	u32	hdmi_irq_reg_stride;
+	u32	hdmi_irq_ports;
+
+	/* HDMI specific controls */
+	u32	hdmi_tx_ctl_addr;
+	u32	hdmi_legacy_addr;
+	u32	hdmi_vbit_addr;
+	u32	hdmi_ch_lsb_addr;
+	u32	hdmi_ch_msb_addr;
+	u32	ch_stride;
+	u32	hdmi_parity_addr;
+	u32	hdmi_dmactl_addr;
+	u32	hdmi_dma_stride;
+	u32	hdmi_DP_addr;
+	u32	hdmi_sstream_addr;
+
+	/* HDMI SSTREAM CTRL fields  */
+	struct reg_field sstream_en;
+	struct reg_field dma_sel;
+	struct reg_field auto_bbit_en;
+	struct reg_field layout;
+	struct reg_field layout_sp;
+	struct reg_field set_sp_on_en;
+	struct reg_field dp_audio;
+	struct reg_field dp_staffing_en;
+	struct reg_field dp_sp_b_hw_en;
+
+	/* HDMI DP METADATA CTL fields */
+	struct reg_field mute;
+	struct reg_field as_sdp_cc;
+	struct reg_field as_sdp_ct;
+	struct reg_field aif_db4;
+	struct reg_field frequency;
+	struct reg_field mst_index;
+	struct reg_field dptx_index;
+
+	/* HDMI TX CTRL fields */
+	struct reg_field soft_reset;
+	struct reg_field force_reset;
+
+	/* HDMI TX DMA CTRL */
+	struct reg_field use_hw_chs;
+	struct reg_field use_hw_usr;
+	struct reg_field hw_chs_sel;
+	struct reg_field hw_usr_sel;
+
+	/* HDMI VBIT CTRL */
+	struct reg_field replace_vbit;
+	struct reg_field vbit_stream;
+
+	/* HDMI TX LEGACY */
+	struct reg_field legacy_en;
+
+	/* HDMI TX PARITY */
+	struct reg_field calc_en;
+
+	/* HDMI CH LSB */
+	struct reg_field lsb_bits;
+
+	/* HDMI CH MSB */
+	struct reg_field msb_bits;
+
+	struct reg_field hdmi_rdma_bursten;
+	struct reg_field hdmi_rdma_wpscnt;
+	struct reg_field hdmi_rdma_fifowm;
+	struct reg_field hdmi_rdma_enable;
+	struct reg_field hdmi_rdma_dyncclk;
+	struct reg_field hdmi_rdma_burst8;
+	struct reg_field hdmi_rdma_burst16;
+	struct reg_field hdmi_rdma_dynburst;
+
 	/* RD_DMA Register fields */
 	struct reg_field rdma_intf;
 	struct reg_field rdma_bursten;
@@ -134,8 +238,8 @@ struct lpass_variant {
 	/* SOC specific initialization like clocks */
 	int (*init)(struct platform_device *pdev);
 	int (*exit)(struct platform_device *pdev);
-	int (*alloc_dma_channel)(struct lpass_data *data, int direction);
-	int (*free_dma_channel)(struct lpass_data *data, int ch);
+	int (*alloc_dma_channel)(struct lpass_data *data, int direction, unsigned int dai_id);
+	int (*free_dma_channel)(struct lpass_data *data, int ch, unsigned int dai_id);
 
 	/* SOC specific dais */
 	struct snd_soc_dai_driver *dai_driver;