Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 1303 insertions, 0 deletions

diff --git a/sound/soc/zte/Kconfig b/sound/soc/zte/Kconfig
new file mode 100644
index 000000000..a23d4f13c
--- /dev/null
+++ b/sound/soc/zte/Kconfig
@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config ZX_SPDIF
+	tristate "ZTE ZX SPDIF Driver Support"
+	depends on ARCH_ZX || COMPILE_TEST
+	depends on COMMON_CLK
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for codecs attached to the
+	  ZTE ZX SPDIF interface
+
+config ZX_I2S
+	tristate "ZTE ZX I2S Driver Support"
+	depends on ARCH_ZX || COMPILE_TEST
+	depends on COMMON_CLK
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for codecs attached to the
+	  ZTE ZX I2S interface
+
+config ZX_TDM
+	tristate "ZTE ZX TDM Driver Support"
+	depends on COMMON_CLK
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for codecs attached to the
+	  ZTE ZX TDM interface
diff --git a/sound/soc/zte/Makefile b/sound/soc/zte/Makefile
new file mode 100644
index 000000000..2f7cdefa4
--- /dev/null
+++ b/sound/soc/zte/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_ZX_SPDIF)	+= zx-spdif.o
+obj-$(CONFIG_ZX_I2S)	+= zx-i2s.o
+obj-$(CONFIG_ZX_TDM)	+= zx-tdm.o
diff --git a/sound/soc/zte/zx-i2s.c b/sound/soc/zte/zx-i2s.c
new file mode 100644
index 000000000..1c1a44e08
--- /dev/null
+++ b/sound/soc/zte/zx-i2s.c
@@ -0,0 +1,452 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Linaro
+ *
+ * Author: Jun Nie <jun.nie@linaro.org>
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+
+#define ZX_I2S_PROCESS_CTRL	0x04
+#define ZX_I2S_TIMING_CTRL	0x08
+#define	ZX_I2S_FIFO_CTRL	0x0C
+#define	ZX_I2S_FIFO_STATUS	0x10
+#define ZX_I2S_INT_EN		0x14
+#define ZX_I2S_INT_STATUS	0x18
+#define ZX_I2S_DATA		0x1C
+#define ZX_I2S_FRAME_CNTR	0x20
+
+#define I2S_DEAGULT_FIFO_THRES	(0x10)
+#define I2S_MAX_FIFO_THRES	(0x20)
+
+#define ZX_I2S_PROCESS_TX_EN	(1 << 0)
+#define ZX_I2S_PROCESS_TX_DIS	(0 << 0)
+#define ZX_I2S_PROCESS_RX_EN	(1 << 1)
+#define ZX_I2S_PROCESS_RX_DIS	(0 << 1)
+#define ZX_I2S_PROCESS_I2S_EN	(1 << 2)
+#define ZX_I2S_PROCESS_I2S_DIS	(0 << 2)
+
+#define ZX_I2S_TIMING_MAST		(1 << 0)
+#define ZX_I2S_TIMING_SLAVE		(0 << 0)
+#define ZX_I2S_TIMING_MS_MASK		(1 << 0)
+#define ZX_I2S_TIMING_LOOP		(1 << 1)
+#define ZX_I2S_TIMING_NOR		(0 << 1)
+#define ZX_I2S_TIMING_LOOP_MASK		(1 << 1)
+#define ZX_I2S_TIMING_PTNR		(1 << 2)
+#define ZX_I2S_TIMING_NTPR		(0 << 2)
+#define ZX_I2S_TIMING_PHASE_MASK	(1 << 2)
+#define ZX_I2S_TIMING_TDM		(1 << 3)
+#define ZX_I2S_TIMING_I2S		(0 << 3)
+#define ZX_I2S_TIMING_TIMING_MASK	(1 << 3)
+#define ZX_I2S_TIMING_LONG_SYNC		(1 << 4)
+#define ZX_I2S_TIMING_SHORT_SYNC	(0 << 4)
+#define ZX_I2S_TIMING_SYNC_MASK		(1 << 4)
+#define ZX_I2S_TIMING_TEAK_EN		(1 << 5)
+#define ZX_I2S_TIMING_TEAK_DIS		(0 << 5)
+#define ZX_I2S_TIMING_TEAK_MASK		(1 << 5)
+#define ZX_I2S_TIMING_STD_I2S		(0 << 6)
+#define ZX_I2S_TIMING_MSB_JUSTIF	(1 << 6)
+#define ZX_I2S_TIMING_LSB_JUSTIF	(2 << 6)
+#define ZX_I2S_TIMING_ALIGN_MASK	(3 << 6)
+#define ZX_I2S_TIMING_CHN_MASK		(7 << 8)
+#define ZX_I2S_TIMING_CHN(x)		((x - 1) << 8)
+#define ZX_I2S_TIMING_LANE_MASK		(3 << 11)
+#define ZX_I2S_TIMING_LANE(x)		((x - 1) << 11)
+#define ZX_I2S_TIMING_TSCFG_MASK	(7 << 13)
+#define ZX_I2S_TIMING_TSCFG(x)		(x << 13)
+#define ZX_I2S_TIMING_TS_WIDTH_MASK	(0x1f << 16)
+#define ZX_I2S_TIMING_TS_WIDTH(x)	((x - 1) << 16)
+#define ZX_I2S_TIMING_DATA_SIZE_MASK	(0x1f << 21)
+#define ZX_I2S_TIMING_DATA_SIZE(x)	((x - 1) << 21)
+#define ZX_I2S_TIMING_CFG_ERR_MASK	(1 << 31)
+
+#define ZX_I2S_FIFO_CTRL_TX_RST		(1 << 0)
+#define ZX_I2S_FIFO_CTRL_TX_RST_MASK	(1 << 0)
+#define ZX_I2S_FIFO_CTRL_RX_RST		(1 << 1)
+#define ZX_I2S_FIFO_CTRL_RX_RST_MASK	(1 << 1)
+#define ZX_I2S_FIFO_CTRL_TX_DMA_EN	(1 << 4)
+#define ZX_I2S_FIFO_CTRL_TX_DMA_DIS	(0 << 4)
+#define ZX_I2S_FIFO_CTRL_TX_DMA_MASK	(1 << 4)
+#define ZX_I2S_FIFO_CTRL_RX_DMA_EN	(1 << 5)
+#define ZX_I2S_FIFO_CTRL_RX_DMA_DIS	(0 << 5)
+#define ZX_I2S_FIFO_CTRL_RX_DMA_MASK	(1 << 5)
+#define ZX_I2S_FIFO_CTRL_TX_THRES_MASK	(0x1F << 8)
+#define ZX_I2S_FIFO_CTRL_RX_THRES_MASK	(0x1F << 16)
+
+#define CLK_RAT (32 * 4)
+
+struct zx_i2s_info {
+	struct snd_dmaengine_dai_dma_data	dma_playback;
+	struct snd_dmaengine_dai_dma_data	dma_capture;
+	struct clk				*dai_wclk;
+	struct clk				*dai_pclk;
+	void __iomem				*reg_base;
+	int					master;
+	resource_size_t				mapbase;
+};
+
+static void zx_i2s_tx_en(void __iomem *base, bool on)
+{
+	unsigned long val;
+
+	val = readl_relaxed(base + ZX_I2S_PROCESS_CTRL);
+	if (on)
+		val |= ZX_I2S_PROCESS_TX_EN | ZX_I2S_PROCESS_I2S_EN;
+	else
+		val &= ~(ZX_I2S_PROCESS_TX_EN | ZX_I2S_PROCESS_I2S_EN);
+	writel_relaxed(val, base + ZX_I2S_PROCESS_CTRL);
+}
+
+static void zx_i2s_rx_en(void __iomem *base, bool on)
+{
+	unsigned long val;
+
+	val = readl_relaxed(base + ZX_I2S_PROCESS_CTRL);
+	if (on)
+		val |= ZX_I2S_PROCESS_RX_EN | ZX_I2S_PROCESS_I2S_EN;
+	else
+		val &= ~(ZX_I2S_PROCESS_RX_EN | ZX_I2S_PROCESS_I2S_EN);
+	writel_relaxed(val, base + ZX_I2S_PROCESS_CTRL);
+}
+
+static void zx_i2s_tx_dma_en(void __iomem *base, bool on)
+{
+	unsigned long val;
+
+	val = readl_relaxed(base + ZX_I2S_FIFO_CTRL);
+	val |= ZX_I2S_FIFO_CTRL_TX_RST | (I2S_DEAGULT_FIFO_THRES << 8);
+	if (on)
+		val |= ZX_I2S_FIFO_CTRL_TX_DMA_EN;
+	else
+		val &= ~ZX_I2S_FIFO_CTRL_TX_DMA_EN;
+	writel_relaxed(val, base + ZX_I2S_FIFO_CTRL);
+}
+
+static void zx_i2s_rx_dma_en(void __iomem *base, bool on)
+{
+	unsigned long val;
+
+	val = readl_relaxed(base + ZX_I2S_FIFO_CTRL);
+	val |= ZX_I2S_FIFO_CTRL_RX_RST | (I2S_DEAGULT_FIFO_THRES << 16);
+	if (on)
+		val |= ZX_I2S_FIFO_CTRL_RX_DMA_EN;
+	else
+		val &= ~ZX_I2S_FIFO_CTRL_RX_DMA_EN;
+	writel_relaxed(val, base + ZX_I2S_FIFO_CTRL);
+}
+
+#define ZX_I2S_RATES \
+	(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
+	 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+	 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000| \
+	 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
+
+#define ZX_I2S_FMTBIT \
+	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | \
+	SNDRV_PCM_FMTBIT_S32_LE)
+
+static int zx_i2s_dai_probe(struct snd_soc_dai *dai)
+{
+	struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev);
+
+	snd_soc_dai_set_drvdata(dai, zx_i2s);
+	zx_i2s->dma_playback.addr = zx_i2s->mapbase + ZX_I2S_DATA;
+	zx_i2s->dma_playback.maxburst = 16;
+	zx_i2s->dma_capture.addr = zx_i2s->mapbase + ZX_I2S_DATA;
+	zx_i2s->dma_capture.maxburst = 16;
+	snd_soc_dai_init_dma_data(dai, &zx_i2s->dma_playback,
+				  &zx_i2s->dma_capture);
+	return 0;
+}
+
+static int zx_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
+{
+	struct zx_i2s_info *i2s = snd_soc_dai_get_drvdata(cpu_dai);
+	unsigned long val;
+
+	val = readl_relaxed(i2s->reg_base + ZX_I2S_TIMING_CTRL);
+	val &= ~(ZX_I2S_TIMING_TIMING_MASK | ZX_I2S_TIMING_ALIGN_MASK |
+			ZX_I2S_TIMING_TEAK_MASK | ZX_I2S_TIMING_SYNC_MASK |
+			ZX_I2S_TIMING_MS_MASK);
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		val |= (ZX_I2S_TIMING_I2S | ZX_I2S_TIMING_STD_I2S);
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		val |= (ZX_I2S_TIMING_I2S | ZX_I2S_TIMING_MSB_JUSTIF);
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		val |= (ZX_I2S_TIMING_I2S | ZX_I2S_TIMING_LSB_JUSTIF);
+		break;
+	default:
+		dev_err(cpu_dai->dev, "Unknown i2s timing\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		/* Codec is master, and I2S is slave. */
+		i2s->master = 0;
+		val |= ZX_I2S_TIMING_SLAVE;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		/* Codec is slave, and I2S is master. */
+		i2s->master = 1;
+		val |= ZX_I2S_TIMING_MAST;
+		break;
+	default:
+		dev_err(cpu_dai->dev, "Unknown master/slave format\n");
+		return -EINVAL;
+	}
+
+	writel_relaxed(val, i2s->reg_base + ZX_I2S_TIMING_CTRL);
+	return 0;
+}
+
+static int zx_i2s_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *socdai)
+{
+	struct zx_i2s_info *i2s = snd_soc_dai_get_drvdata(socdai);
+	struct snd_dmaengine_dai_dma_data *dma_data;
+	unsigned int lane, ch_num, len, ret = 0;
+	unsigned int ts_width = 32;
+	unsigned long val;
+	unsigned long chn_cfg;
+
+	dma_data = snd_soc_dai_get_dma_data(socdai, substream);
+	dma_data->addr_width = ts_width >> 3;
+
+	val = readl_relaxed(i2s->reg_base + ZX_I2S_TIMING_CTRL);
+	val &= ~(ZX_I2S_TIMING_TS_WIDTH_MASK | ZX_I2S_TIMING_DATA_SIZE_MASK |
+		ZX_I2S_TIMING_LANE_MASK | ZX_I2S_TIMING_CHN_MASK |
+		ZX_I2S_TIMING_TSCFG_MASK);
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		len = 16;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		len = 24;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		len = 32;
+		break;
+	default:
+		dev_err(socdai->dev, "Unknown data format\n");
+		return -EINVAL;
+	}
+	val |= ZX_I2S_TIMING_TS_WIDTH(ts_width) | ZX_I2S_TIMING_DATA_SIZE(len);
+
+	ch_num = params_channels(params);
+	switch (ch_num) {
+	case 1:
+		lane = 1;
+		chn_cfg = 2;
+		break;
+	case 2:
+	case 4:
+	case 6:
+	case 8:
+		lane = ch_num / 2;
+		chn_cfg = 3;
+		break;
+	default:
+		dev_err(socdai->dev, "Not support channel num %d\n", ch_num);
+		return -EINVAL;
+	}
+	val |= ZX_I2S_TIMING_LANE(lane);
+	val |= ZX_I2S_TIMING_TSCFG(chn_cfg);
+	val |= ZX_I2S_TIMING_CHN(ch_num);
+	writel_relaxed(val, i2s->reg_base + ZX_I2S_TIMING_CTRL);
+
+	if (i2s->master)
+		ret = clk_set_rate(i2s->dai_wclk,
+				params_rate(params) * ch_num * CLK_RAT);
+
+	return ret;
+}
+
+static int zx_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+			  struct snd_soc_dai *dai)
+{
+	struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev);
+	int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
+	int ret = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		if (capture)
+			zx_i2s_rx_dma_en(zx_i2s->reg_base, true);
+		else
+			zx_i2s_tx_dma_en(zx_i2s->reg_base, true);
+		fallthrough;
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		if (capture)
+			zx_i2s_rx_en(zx_i2s->reg_base, true);
+		else
+			zx_i2s_tx_en(zx_i2s->reg_base, true);
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+		if (capture)
+			zx_i2s_rx_dma_en(zx_i2s->reg_base, false);
+		else
+			zx_i2s_tx_dma_en(zx_i2s->reg_base, false);
+		fallthrough;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (capture)
+			zx_i2s_rx_en(zx_i2s->reg_base, false);
+		else
+			zx_i2s_tx_en(zx_i2s->reg_base, false);
+		break;
+
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int zx_i2s_startup(struct snd_pcm_substream *substream,
+			  struct snd_soc_dai *dai)
+{
+	struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev);
+	int ret;
+
+	ret = clk_prepare_enable(zx_i2s->dai_wclk);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(zx_i2s->dai_pclk);
+	if (ret) {
+		clk_disable_unprepare(zx_i2s->dai_wclk);
+		return ret;
+	}
+
+	return ret;
+}
+
+static void zx_i2s_shutdown(struct snd_pcm_substream *substream,
+			    struct snd_soc_dai *dai)
+{
+	struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev);
+
+	clk_disable_unprepare(zx_i2s->dai_wclk);
+	clk_disable_unprepare(zx_i2s->dai_pclk);
+}
+
+static const struct snd_soc_dai_ops zx_i2s_dai_ops = {
+	.trigger	= zx_i2s_trigger,
+	.hw_params	= zx_i2s_hw_params,
+	.set_fmt	= zx_i2s_set_fmt,
+	.startup	= zx_i2s_startup,
+	.shutdown	= zx_i2s_shutdown,
+};
+
+static const struct snd_soc_component_driver zx_i2s_component = {
+	.name			= "zx-i2s",
+};
+
+static struct snd_soc_dai_driver zx_i2s_dai = {
+	.name	= "zx-i2s-dai",
+	.id	= 0,
+	.probe	= zx_i2s_dai_probe,
+	.playback   = {
+		.channels_min	= 1,
+		.channels_max	= 8,
+		.rates		= ZX_I2S_RATES,
+		.formats	= ZX_I2S_FMTBIT,
+	},
+	.capture = {
+		.channels_min	= 1,
+		.channels_max	= 2,
+		.rates		= ZX_I2S_RATES,
+		.formats	= ZX_I2S_FMTBIT,
+	},
+	.ops	= &zx_i2s_dai_ops,
+};
+
+static int zx_i2s_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct zx_i2s_info *zx_i2s;
+	int ret;
+
+	zx_i2s = devm_kzalloc(&pdev->dev, sizeof(*zx_i2s), GFP_KERNEL);
+	if (!zx_i2s)
+		return -ENOMEM;
+
+	zx_i2s->dai_wclk = devm_clk_get(&pdev->dev, "wclk");
+	if (IS_ERR(zx_i2s->dai_wclk)) {
+		dev_err(&pdev->dev, "Fail to get wclk\n");
+		return PTR_ERR(zx_i2s->dai_wclk);
+	}
+
+	zx_i2s->dai_pclk = devm_clk_get(&pdev->dev, "pclk");
+	if (IS_ERR(zx_i2s->dai_pclk)) {
+		dev_err(&pdev->dev, "Fail to get pclk\n");
+		return PTR_ERR(zx_i2s->dai_pclk);
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	zx_i2s->mapbase = res->start;
+	zx_i2s->reg_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(zx_i2s->reg_base)) {
+		dev_err(&pdev->dev, "ioremap failed!\n");
+		return PTR_ERR(zx_i2s->reg_base);
+	}
+
+	writel_relaxed(0, zx_i2s->reg_base + ZX_I2S_FIFO_CTRL);
+	platform_set_drvdata(pdev, zx_i2s);
+
+	ret = devm_snd_soc_register_component(&pdev->dev, &zx_i2s_component,
+					      &zx_i2s_dai, 1);
+	if (ret) {
+		dev_err(&pdev->dev, "Register DAI failed: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (ret)
+		dev_err(&pdev->dev, "Register platform PCM failed: %d\n", ret);
+
+	return ret;
+}
+
+static const struct of_device_id zx_i2s_dt_ids[] = {
+	{ .compatible = "zte,zx296702-i2s", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, zx_i2s_dt_ids);
+
+static struct platform_driver i2s_driver = {
+	.probe = zx_i2s_probe,
+	.driver = {
+		.name = "zx-i2s",
+		.of_match_table = zx_i2s_dt_ids,
+	},
+};
+
+module_platform_driver(i2s_driver);
+
+MODULE_AUTHOR("Jun Nie <jun.nie@linaro.org>");
+MODULE_DESCRIPTION("ZTE I2S SoC DAI");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/zte/zx-spdif.c b/sound/soc/zte/zx-spdif.c
new file mode 100644
index 000000000..b4168bd53
--- /dev/null
+++ b/sound/soc/zte/zx-spdif.c
@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Linaro
+ *
+ * Author: Jun Nie <jun.nie@linaro.org>
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/dmaengine.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <sound/asoundef.h>
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#define ZX_CTRL				0x04
+#define ZX_FIFOCTRL			0x08
+#define ZX_INT_STATUS			0x10
+#define ZX_INT_MASK			0x14
+#define ZX_DATA				0x18
+#define ZX_VALID_BIT			0x1c
+#define ZX_CH_STA_1			0x20
+#define ZX_CH_STA_2			0x24
+#define ZX_CH_STA_3			0x28
+#define ZX_CH_STA_4			0x2c
+#define ZX_CH_STA_5			0x30
+#define ZX_CH_STA_6			0x34
+
+#define ZX_CTRL_MODA_16			(0 << 6)
+#define ZX_CTRL_MODA_18			BIT(6)
+#define ZX_CTRL_MODA_20			(2 << 6)
+#define ZX_CTRL_MODA_24			(3 << 6)
+#define ZX_CTRL_MODA_MASK		(3 << 6)
+
+#define ZX_CTRL_ENB			BIT(4)
+#define ZX_CTRL_DNB			(0 << 4)
+#define ZX_CTRL_ENB_MASK		BIT(4)
+
+#define ZX_CTRL_TX_OPEN			BIT(0)
+#define ZX_CTRL_TX_CLOSE		(0 << 0)
+#define ZX_CTRL_TX_MASK			BIT(0)
+
+#define ZX_CTRL_OPEN			(ZX_CTRL_TX_OPEN | ZX_CTRL_ENB)
+#define ZX_CTRL_CLOSE			(ZX_CTRL_TX_CLOSE | ZX_CTRL_DNB)
+
+#define ZX_CTRL_DOUBLE_TRACK		(0 << 8)
+#define ZX_CTRL_LEFT_TRACK		BIT(8)
+#define ZX_CTRL_RIGHT_TRACK		(2 << 8)
+#define ZX_CTRL_TRACK_MASK		(3 << 8)
+
+#define ZX_FIFOCTRL_TXTH_MASK		(0x1f << 8)
+#define ZX_FIFOCTRL_TXTH(x)		(x << 8)
+#define ZX_FIFOCTRL_TX_DMA_EN		BIT(2)
+#define ZX_FIFOCTRL_TX_DMA_DIS		(0 << 2)
+#define ZX_FIFOCTRL_TX_DMA_EN_MASK	BIT(2)
+#define ZX_FIFOCTRL_TX_FIFO_RST		BIT(0)
+#define ZX_FIFOCTRL_TX_FIFO_RST_MASK	BIT(0)
+
+#define ZX_VALID_DOUBLE_TRACK		(0 << 0)
+#define ZX_VALID_LEFT_TRACK		BIT(1)
+#define ZX_VALID_RIGHT_TRACK		(2 << 0)
+#define ZX_VALID_TRACK_MASK		(3 << 0)
+
+#define ZX_SPDIF_CLK_RAT		(2 * 32)
+
+struct zx_spdif_info {
+	struct snd_dmaengine_dai_dma_data	dma_data;
+	struct clk				*dai_clk;
+	void __iomem				*reg_base;
+	resource_size_t				mapbase;
+};
+
+static int zx_spdif_dai_probe(struct snd_soc_dai *dai)
+{
+	struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
+
+	snd_soc_dai_set_drvdata(dai, zx_spdif);
+	zx_spdif->dma_data.addr = zx_spdif->mapbase + ZX_DATA;
+	zx_spdif->dma_data.maxburst = 8;
+	snd_soc_dai_init_dma_data(dai, &zx_spdif->dma_data, NULL);
+	return 0;
+}
+
+static int zx_spdif_chanstats(void __iomem *base, unsigned int rate)
+{
+	u32 cstas1;
+
+	switch (rate) {
+	case 22050:
+		cstas1 = IEC958_AES3_CON_FS_22050;
+		break;
+	case 24000:
+		cstas1 = IEC958_AES3_CON_FS_24000;
+		break;
+	case 32000:
+		cstas1 = IEC958_AES3_CON_FS_32000;
+		break;
+	case 44100:
+		cstas1 = IEC958_AES3_CON_FS_44100;
+		break;
+	case 48000:
+		cstas1 = IEC958_AES3_CON_FS_48000;
+		break;
+	case 88200:
+		cstas1 = IEC958_AES3_CON_FS_88200;
+		break;
+	case 96000:
+		cstas1 = IEC958_AES3_CON_FS_96000;
+		break;
+	case 176400:
+		cstas1 = IEC958_AES3_CON_FS_176400;
+		break;
+	case 192000:
+		cstas1 = IEC958_AES3_CON_FS_192000;
+		break;
+	default:
+		return -EINVAL;
+	}
+	cstas1 = cstas1 << 24;
+	cstas1 |= IEC958_AES0_CON_NOT_COPYRIGHT;
+
+	writel_relaxed(cstas1, base + ZX_CH_STA_1);
+	return 0;
+}
+
+static int zx_spdif_hw_params(struct snd_pcm_substream *substream,
+			      struct snd_pcm_hw_params *params,
+			      struct snd_soc_dai *socdai)
+{
+	struct zx_spdif_info *zx_spdif = dev_get_drvdata(socdai->dev);
+	struct zx_spdif_info *spdif = snd_soc_dai_get_drvdata(socdai);
+	struct snd_dmaengine_dai_dma_data *dma_data =
+		snd_soc_dai_get_dma_data(socdai, substream);
+	u32 val, ch_num, rate;
+	int ret;
+
+	dma_data->addr_width = params_width(params) >> 3;
+
+	val = readl_relaxed(zx_spdif->reg_base + ZX_CTRL);
+	val &= ~ZX_CTRL_MODA_MASK;
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		val |= ZX_CTRL_MODA_16;
+		break;
+
+	case SNDRV_PCM_FORMAT_S18_3LE:
+		val |= ZX_CTRL_MODA_18;
+		break;
+
+	case SNDRV_PCM_FORMAT_S20_3LE:
+		val |= ZX_CTRL_MODA_20;
+		break;
+
+	case SNDRV_PCM_FORMAT_S24_LE:
+		val |= ZX_CTRL_MODA_24;
+		break;
+	default:
+		dev_err(socdai->dev, "Format not support!\n");
+		return -EINVAL;
+	}
+
+	ch_num = params_channels(params);
+	if (ch_num == 2)
+		val |= ZX_CTRL_DOUBLE_TRACK;
+	else
+		val |= ZX_CTRL_LEFT_TRACK;
+	writel_relaxed(val, zx_spdif->reg_base + ZX_CTRL);
+
+	val = readl_relaxed(zx_spdif->reg_base + ZX_VALID_BIT);
+	val &= ~ZX_VALID_TRACK_MASK;
+	if (ch_num == 2)
+		val |= ZX_VALID_DOUBLE_TRACK;
+	else
+		val |= ZX_VALID_RIGHT_TRACK;
+	writel_relaxed(val, zx_spdif->reg_base + ZX_VALID_BIT);
+
+	rate = params_rate(params);
+	ret = zx_spdif_chanstats(zx_spdif->reg_base, rate);
+	if (ret)
+		return ret;
+	return clk_set_rate(spdif->dai_clk, rate * ch_num * ZX_SPDIF_CLK_RAT);
+}
+
+static void zx_spdif_cfg_tx(void __iomem *base, int on)
+{
+	u32 val;
+
+	val = readl_relaxed(base + ZX_CTRL);
+	val &= ~(ZX_CTRL_ENB_MASK | ZX_CTRL_TX_MASK);
+	val |= on ? ZX_CTRL_OPEN : ZX_CTRL_CLOSE;
+	writel_relaxed(val, base + ZX_CTRL);
+
+	val = readl_relaxed(base + ZX_FIFOCTRL);
+	val &= ~ZX_FIFOCTRL_TX_DMA_EN_MASK;
+	if (on)
+		val |= ZX_FIFOCTRL_TX_DMA_EN;
+	writel_relaxed(val, base + ZX_FIFOCTRL);
+}
+
+static int zx_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
+			    struct snd_soc_dai *dai)
+{
+	u32 val;
+	struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
+	int  ret = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		val = readl_relaxed(zx_spdif->reg_base + ZX_FIFOCTRL);
+		val |= ZX_FIFOCTRL_TX_FIFO_RST;
+		writel_relaxed(val, zx_spdif->reg_base + ZX_FIFOCTRL);
+		fallthrough;
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		zx_spdif_cfg_tx(zx_spdif->reg_base, true);
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		zx_spdif_cfg_tx(zx_spdif->reg_base, false);
+		break;
+
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int zx_spdif_startup(struct snd_pcm_substream *substream,
+			    struct snd_soc_dai *dai)
+{
+	struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
+
+	return clk_prepare_enable(zx_spdif->dai_clk);
+}
+
+static void zx_spdif_shutdown(struct snd_pcm_substream *substream,
+			      struct snd_soc_dai *dai)
+{
+	struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
+
+	clk_disable_unprepare(zx_spdif->dai_clk);
+}
+
+#define ZX_RATES \
+	(SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+	SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |\
+	SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
+
+#define ZX_FORMAT \
+	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE \
+	| SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)
+
+static const struct snd_soc_dai_ops zx_spdif_dai_ops = {
+	.trigger	= zx_spdif_trigger,
+	.startup	= zx_spdif_startup,
+	.shutdown	= zx_spdif_shutdown,
+	.hw_params	= zx_spdif_hw_params,
+};
+
+static struct snd_soc_dai_driver zx_spdif_dai = {
+	.name = "spdif",
+	.id = 0,
+	.probe = zx_spdif_dai_probe,
+	.playback = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = ZX_RATES,
+		.formats = ZX_FORMAT,
+	},
+	.ops = &zx_spdif_dai_ops,
+};
+
+static const struct snd_soc_component_driver zx_spdif_component = {
+	.name	= "spdif",
+};
+
+static void zx_spdif_dev_init(void __iomem *base)
+{
+	u32 val;
+
+	writel_relaxed(0, base + ZX_CTRL);
+	writel_relaxed(0, base + ZX_INT_MASK);
+	writel_relaxed(0xf, base + ZX_INT_STATUS);
+	writel_relaxed(0x1, base + ZX_FIFOCTRL);
+
+	val = readl_relaxed(base + ZX_FIFOCTRL);
+	val &= ~(ZX_FIFOCTRL_TXTH_MASK | ZX_FIFOCTRL_TX_FIFO_RST_MASK);
+	val |= ZX_FIFOCTRL_TXTH(8);
+	writel_relaxed(val, base + ZX_FIFOCTRL);
+}
+
+static int zx_spdif_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct zx_spdif_info *zx_spdif;
+	int ret;
+
+	zx_spdif = devm_kzalloc(&pdev->dev, sizeof(*zx_spdif), GFP_KERNEL);
+	if (!zx_spdif)
+		return -ENOMEM;
+
+	zx_spdif->dai_clk = devm_clk_get(&pdev->dev, "tx");
+	if (IS_ERR(zx_spdif->dai_clk)) {
+		dev_err(&pdev->dev, "Fail to get clk\n");
+		return PTR_ERR(zx_spdif->dai_clk);
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	zx_spdif->mapbase = res->start;
+	zx_spdif->reg_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(zx_spdif->reg_base)) {
+		return PTR_ERR(zx_spdif->reg_base);
+	}
+
+	zx_spdif_dev_init(zx_spdif->reg_base);
+	platform_set_drvdata(pdev, zx_spdif);
+
+	ret = devm_snd_soc_register_component(&pdev->dev, &zx_spdif_component,
+					 &zx_spdif_dai, 1);
+	if (ret) {
+		dev_err(&pdev->dev, "Register DAI failed: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (ret)
+		dev_err(&pdev->dev, "Register platform PCM failed: %d\n", ret);
+
+	return ret;
+}
+
+static const struct of_device_id zx_spdif_dt_ids[] = {
+	{ .compatible = "zte,zx296702-spdif", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, zx_spdif_dt_ids);
+
+static struct platform_driver spdif_driver = {
+	.probe = zx_spdif_probe,
+	.driver = {
+		.name = "zx-spdif",
+		.of_match_table = zx_spdif_dt_ids,
+	},
+};
+
+module_platform_driver(spdif_driver);
+
+MODULE_AUTHOR("Jun Nie <jun.nie@linaro.org>");
+MODULE_DESCRIPTION("ZTE SPDIF SoC DAI");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/zte/zx-tdm.c b/sound/soc/zte/zx-tdm.c
new file mode 100644
index 000000000..4f787185d
--- /dev/null
+++ b/sound/soc/zte/zx-tdm.c
@@ -0,0 +1,458 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ZTE's TDM driver
+ *
+ * Copyright (C) 2017 ZTE Ltd
+ *
+ * Author: Baoyou Xie <baoyou.xie@linaro.org>
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#define	REG_TIMING_CTRL		0x04
+#define	REG_TX_FIFO_CTRL	0x0C
+#define	REG_RX_FIFO_CTRL	0x10
+#define REG_INT_EN		0x1C
+#define REG_INT_STATUS		0x20
+#define REG_DATABUF		0x24
+#define REG_TS_MASK0		0x44
+#define REG_PROCESS_CTRL	0x54
+
+#define FIFO_CTRL_TX_RST	BIT(0)
+#define FIFO_CTRL_RX_RST	BIT(0)
+#define DEAGULT_FIFO_THRES	GENMASK(4, 2)
+
+#define FIFO_CTRL_TX_DMA_EN	BIT(1)
+#define FIFO_CTRL_RX_DMA_EN	BIT(1)
+
+#define TX_FIFO_RST_MASK	BIT(0)
+#define RX_FIFO_RST_MASK	BIT(0)
+
+#define FIFOCTRL_TX_FIFO_RST	BIT(0)
+#define FIFOCTRL_RX_FIFO_RST	BIT(0)
+
+#define TXTH_MASK		GENMASK(5, 2)
+#define RXTH_MASK		GENMASK(5, 2)
+
+#define FIFOCTRL_THRESHOLD(x)	((x) << 2)
+
+#define TIMING_MS_MASK		BIT(1)
+/*
+ * 00: 8 clk cycles every timeslot
+ * 01: 16 clk cycles every timeslot
+ * 10: 32 clk cycles every timeslot
+ */
+#define TIMING_SYNC_WIDTH_MASK	GENMASK(6, 5)
+#define TIMING_WIDTH_SHIFT      5
+#define TIMING_DEFAULT_WIDTH    0
+#define TIMING_TS_WIDTH(x)	((x) << TIMING_WIDTH_SHIFT)
+#define TIMING_WIDTH_FACTOR     8
+
+#define TIMING_MASTER_MODE	BIT(21)
+#define TIMING_LSB_FIRST	BIT(20)
+#define TIMING_TS_NUM(x)	(((x) - 1) << 7)
+#define TIMING_CLK_SEL_MASK	GENMASK(2, 0)
+#define TIMING_CLK_SEL_DEF	BIT(2)
+
+#define PROCESS_TX_EN		BIT(0)
+#define PROCESS_RX_EN		BIT(1)
+#define PROCESS_TDM_EN		BIT(2)
+#define PROCESS_DISABLE_ALL	0
+
+#define INT_DISABLE_ALL		0
+#define INT_STATUS_MASK		GENMASK(6, 0)
+
+struct zx_tdm_info {
+	struct snd_dmaengine_dai_dma_data	dma_playback;
+	struct snd_dmaengine_dai_dma_data	dma_capture;
+	resource_size_t				phy_addr;
+	void __iomem				*regbase;
+	struct clk				*dai_wclk;
+	struct clk				*dai_pclk;
+	int					master;
+	struct device				*dev;
+};
+
+static inline u32 zx_tdm_readl(struct zx_tdm_info *tdm, u16 reg)
+{
+	return readl_relaxed(tdm->regbase + reg);
+}
+
+static inline void zx_tdm_writel(struct zx_tdm_info *tdm, u16 reg, u32 val)
+{
+	writel_relaxed(val, tdm->regbase + reg);
+}
+
+static void zx_tdm_tx_en(struct zx_tdm_info *tdm, bool on)
+{
+	unsigned long val;
+
+	val = zx_tdm_readl(tdm, REG_PROCESS_CTRL);
+	if (on)
+		val |= PROCESS_TX_EN | PROCESS_TDM_EN;
+	else
+		val &= ~(PROCESS_TX_EN | PROCESS_TDM_EN);
+	zx_tdm_writel(tdm, REG_PROCESS_CTRL, val);
+}
+
+static void zx_tdm_rx_en(struct zx_tdm_info *tdm, bool on)
+{
+	unsigned long val;
+
+	val = zx_tdm_readl(tdm, REG_PROCESS_CTRL);
+	if (on)
+		val |= PROCESS_RX_EN | PROCESS_TDM_EN;
+	else
+		val &= ~(PROCESS_RX_EN | PROCESS_TDM_EN);
+	zx_tdm_writel(tdm, REG_PROCESS_CTRL, val);
+}
+
+static void zx_tdm_tx_dma_en(struct zx_tdm_info *tdm, bool on)
+{
+	unsigned long val;
+
+	val = zx_tdm_readl(tdm, REG_TX_FIFO_CTRL);
+	val |= FIFO_CTRL_TX_RST | DEAGULT_FIFO_THRES;
+	if (on)
+		val |= FIFO_CTRL_TX_DMA_EN;
+	else
+		val &= ~FIFO_CTRL_TX_DMA_EN;
+	zx_tdm_writel(tdm, REG_TX_FIFO_CTRL, val);
+}
+
+static void zx_tdm_rx_dma_en(struct zx_tdm_info *tdm, bool on)
+{
+	unsigned long val;
+
+	val = zx_tdm_readl(tdm, REG_RX_FIFO_CTRL);
+	val |= FIFO_CTRL_RX_RST | DEAGULT_FIFO_THRES;
+	if (on)
+		val |= FIFO_CTRL_RX_DMA_EN;
+	else
+		val &= ~FIFO_CTRL_RX_DMA_EN;
+	zx_tdm_writel(tdm, REG_RX_FIFO_CTRL, val);
+}
+
+#define ZX_TDM_RATES	(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
+
+#define ZX_TDM_FMTBIT \
+	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_MU_LAW | \
+	SNDRV_PCM_FMTBIT_A_LAW)
+
+static int zx_tdm_dai_probe(struct snd_soc_dai *dai)
+{
+	struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev);
+
+	snd_soc_dai_set_drvdata(dai, zx_tdm);
+	zx_tdm->dma_playback.addr = zx_tdm->phy_addr + REG_DATABUF;
+	zx_tdm->dma_playback.maxburst = 16;
+	zx_tdm->dma_capture.addr = zx_tdm->phy_addr + REG_DATABUF;
+	zx_tdm->dma_capture.maxburst = 16;
+	snd_soc_dai_init_dma_data(dai, &zx_tdm->dma_playback,
+				  &zx_tdm->dma_capture);
+	return 0;
+}
+
+static int zx_tdm_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
+{
+	struct zx_tdm_info *tdm = snd_soc_dai_get_drvdata(cpu_dai);
+	unsigned long val;
+
+	val = zx_tdm_readl(tdm, REG_TIMING_CTRL);
+	val &= ~(TIMING_SYNC_WIDTH_MASK | TIMING_MS_MASK);
+	val |= TIMING_DEFAULT_WIDTH << TIMING_WIDTH_SHIFT;
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		tdm->master = 1;
+		val |= TIMING_MASTER_MODE;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		tdm->master = 0;
+		val &= ~TIMING_MASTER_MODE;
+		break;
+	default:
+		dev_err(cpu_dai->dev, "Unknown master/slave format\n");
+		return -EINVAL;
+	}
+
+
+	zx_tdm_writel(tdm, REG_TIMING_CTRL, val);
+
+	return 0;
+}
+
+static int zx_tdm_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *socdai)
+{
+	struct zx_tdm_info *tdm = snd_soc_dai_get_drvdata(socdai);
+	struct snd_dmaengine_dai_dma_data *dma_data;
+	unsigned int ts_width = TIMING_DEFAULT_WIDTH;
+	unsigned int ch_num = 32;
+	unsigned int mask = 0;
+	unsigned int ret = 0;
+	unsigned long val;
+
+	dma_data = snd_soc_dai_get_dma_data(socdai, substream);
+	dma_data->addr_width = ch_num >> 3;
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_MU_LAW:
+	case SNDRV_PCM_FORMAT_A_LAW:
+	case SNDRV_PCM_FORMAT_S16_LE:
+		ts_width = 1;
+		break;
+	default:
+		dev_err(socdai->dev, "Unknown data format\n");
+		return -EINVAL;
+	}
+
+	val = zx_tdm_readl(tdm, REG_TIMING_CTRL);
+	val |= TIMING_TS_WIDTH(ts_width) | TIMING_TS_NUM(1);
+	zx_tdm_writel(tdm, REG_TIMING_CTRL, val);
+	zx_tdm_writel(tdm, REG_TS_MASK0, mask);
+
+	if (tdm->master)
+		ret = clk_set_rate(tdm->dai_wclk,
+			params_rate(params) * TIMING_WIDTH_FACTOR * ch_num);
+
+	return ret;
+}
+
+static int zx_tdm_trigger(struct snd_pcm_substream *substream, int cmd,
+			  struct snd_soc_dai *dai)
+{
+	int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
+	struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev);
+	unsigned int val;
+	int ret = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		if (capture) {
+			val = zx_tdm_readl(zx_tdm, REG_RX_FIFO_CTRL);
+			val |= FIFOCTRL_RX_FIFO_RST;
+			zx_tdm_writel(zx_tdm, REG_RX_FIFO_CTRL, val);
+
+			zx_tdm_rx_dma_en(zx_tdm, true);
+		} else {
+			val = zx_tdm_readl(zx_tdm, REG_TX_FIFO_CTRL);
+			val |= FIFOCTRL_TX_FIFO_RST;
+			zx_tdm_writel(zx_tdm, REG_TX_FIFO_CTRL, val);
+
+			zx_tdm_tx_dma_en(zx_tdm, true);
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		if (capture)
+			zx_tdm_rx_en(zx_tdm, true);
+		else
+			zx_tdm_tx_en(zx_tdm, true);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		if (capture)
+			zx_tdm_rx_dma_en(zx_tdm, false);
+		else
+			zx_tdm_tx_dma_en(zx_tdm, false);
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (capture)
+			zx_tdm_rx_en(zx_tdm, false);
+		else
+			zx_tdm_tx_en(zx_tdm, false);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int zx_tdm_startup(struct snd_pcm_substream *substream,
+			  struct snd_soc_dai *dai)
+{
+	struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev);
+	int ret;
+
+	ret = clk_prepare_enable(zx_tdm->dai_wclk);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(zx_tdm->dai_pclk);
+	if (ret) {
+		clk_disable_unprepare(zx_tdm->dai_wclk);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void zx_tdm_shutdown(struct snd_pcm_substream *substream,
+			    struct snd_soc_dai *dai)
+{
+	struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev);
+
+	clk_disable_unprepare(zx_tdm->dai_pclk);
+	clk_disable_unprepare(zx_tdm->dai_wclk);
+}
+
+static const struct snd_soc_dai_ops zx_tdm_dai_ops = {
+	.trigger	= zx_tdm_trigger,
+	.hw_params	= zx_tdm_hw_params,
+	.set_fmt	= zx_tdm_set_fmt,
+	.startup	= zx_tdm_startup,
+	.shutdown	= zx_tdm_shutdown,
+};
+
+static const struct snd_soc_component_driver zx_tdm_component = {
+	.name			= "zx-tdm",
+};
+
+static void zx_tdm_init_state(struct zx_tdm_info *tdm)
+{
+	unsigned int val;
+
+	zx_tdm_writel(tdm, REG_PROCESS_CTRL, PROCESS_DISABLE_ALL);
+
+	val = zx_tdm_readl(tdm, REG_TIMING_CTRL);
+	val |= TIMING_LSB_FIRST;
+	val &= ~TIMING_CLK_SEL_MASK;
+	val |= TIMING_CLK_SEL_DEF;
+	zx_tdm_writel(tdm, REG_TIMING_CTRL, val);
+
+	zx_tdm_writel(tdm, REG_INT_EN, INT_DISABLE_ALL);
+	/*
+	 * write INT_STATUS register to clear it.
+	 */
+	zx_tdm_writel(tdm, REG_INT_STATUS, INT_STATUS_MASK);
+	zx_tdm_writel(tdm, REG_RX_FIFO_CTRL, FIFOCTRL_RX_FIFO_RST);
+	zx_tdm_writel(tdm, REG_TX_FIFO_CTRL, FIFOCTRL_TX_FIFO_RST);
+
+	val = zx_tdm_readl(tdm, REG_RX_FIFO_CTRL);
+	val &= ~(RXTH_MASK | RX_FIFO_RST_MASK);
+	val |= FIFOCTRL_THRESHOLD(8);
+	zx_tdm_writel(tdm, REG_RX_FIFO_CTRL, val);
+
+	val = zx_tdm_readl(tdm, REG_TX_FIFO_CTRL);
+	val &= ~(TXTH_MASK | TX_FIFO_RST_MASK);
+	val |= FIFOCTRL_THRESHOLD(8);
+	zx_tdm_writel(tdm, REG_TX_FIFO_CTRL, val);
+}
+
+static struct snd_soc_dai_driver zx_tdm_dai = {
+	.name	= "zx-tdm-dai",
+	.id	= 0,
+	.probe	= zx_tdm_dai_probe,
+	.playback   = {
+		.channels_min	= 1,
+		.channels_max	= 4,
+		.rates		= ZX_TDM_RATES,
+		.formats	= ZX_TDM_FMTBIT,
+	},
+	.capture = {
+		.channels_min	= 1,
+		.channels_max	= 4,
+		.rates		= ZX_TDM_RATES,
+		.formats	= ZX_TDM_FMTBIT,
+	},
+	.ops	= &zx_tdm_dai_ops,
+};
+
+static int zx_tdm_probe(struct platform_device *pdev)
+{
+	struct of_phandle_args out_args;
+	unsigned int dma_reg_offset;
+	struct zx_tdm_info *zx_tdm;
+	unsigned int dma_mask;
+	struct resource *res;
+	struct regmap *regmap_sysctrl;
+	int ret;
+
+	zx_tdm = devm_kzalloc(&pdev->dev, sizeof(*zx_tdm), GFP_KERNEL);
+	if (!zx_tdm)
+		return -ENOMEM;
+
+	zx_tdm->dev = &pdev->dev;
+
+	zx_tdm->dai_wclk = devm_clk_get(&pdev->dev, "wclk");
+	if (IS_ERR(zx_tdm->dai_wclk)) {
+		dev_err(&pdev->dev, "Fail to get wclk\n");
+		return PTR_ERR(zx_tdm->dai_wclk);
+	}
+
+	zx_tdm->dai_pclk = devm_clk_get(&pdev->dev, "pclk");
+	if (IS_ERR(zx_tdm->dai_pclk)) {
+		dev_err(&pdev->dev, "Fail to get pclk\n");
+		return PTR_ERR(zx_tdm->dai_pclk);
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	zx_tdm->phy_addr = res->start;
+	zx_tdm->regbase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(zx_tdm->regbase))
+		return PTR_ERR(zx_tdm->regbase);
+
+	ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
+				"zte,tdm-dma-sysctrl", 2, 0, &out_args);
+	if (ret) {
+		dev_err(&pdev->dev, "Fail to get zte,tdm-dma-sysctrl\n");
+		return ret;
+	}
+
+	dma_reg_offset = out_args.args[0];
+	dma_mask = out_args.args[1];
+	regmap_sysctrl = syscon_node_to_regmap(out_args.np);
+	if (IS_ERR(regmap_sysctrl)) {
+		of_node_put(out_args.np);
+		return PTR_ERR(regmap_sysctrl);
+	}
+
+	regmap_update_bits(regmap_sysctrl, dma_reg_offset, dma_mask, dma_mask);
+	of_node_put(out_args.np);
+
+	zx_tdm_init_state(zx_tdm);
+	platform_set_drvdata(pdev, zx_tdm);
+
+	ret = devm_snd_soc_register_component(&pdev->dev, &zx_tdm_component,
+						&zx_tdm_dai, 1);
+	if (ret) {
+		dev_err(&pdev->dev, "Register DAI failed: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (ret)
+		dev_err(&pdev->dev, "Register platform PCM failed: %d\n", ret);
+
+	return ret;
+}
+
+static const struct of_device_id zx_tdm_dt_ids[] = {
+	{ .compatible = "zte,zx296718-tdm", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, zx_tdm_dt_ids);
+
+static struct platform_driver tdm_driver = {
+	.probe = zx_tdm_probe,
+	.driver = {
+		.name = "zx-tdm",
+		.of_match_table = zx_tdm_dt_ids,
+	},
+};
+module_platform_driver(tdm_driver);
+
+MODULE_AUTHOR("Baoyou Xie <baoyou.xie@linaro.org>");
+MODULE_DESCRIPTION("ZTE TDM DAI driver");
+MODULE_LICENSE("GPL v2");