ASoC: hisilicon: Add hi6210 i2s audio driver

Add driver for hi6210 i2s controller found on hi6220 boards.

Signed-off-by: Andy Green <[e-mail]>
[jstultz: Forward ported to mainline, fairly major rework
based on suggestions from Mark Brown]
Signed-off-by: John Stultz <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/Kconfig

···
 source "sound/soc/davinci/Kconfig"
 source "sound/soc/dwc/Kconfig"
 source "sound/soc/fsl/Kconfig"
+source "sound/soc/hisilicon/Kconfig"
 source "sound/soc/jz4740/Kconfig"
 source "sound/soc/nuc900/Kconfig"
 source "sound/soc/omap/Kconfig"

sound/soc/Makefile

···
 obj-$(CONFIG_SND_SOC)	+= davinci/
 obj-$(CONFIG_SND_SOC)	+= dwc/
 obj-$(CONFIG_SND_SOC)	+= fsl/
+obj-$(CONFIG_SND_SOC)	+= hisilicon/
 obj-$(CONFIG_SND_SOC)	+= jz4740/
 obj-$(CONFIG_SND_SOC)	+= img/
 obj-$(CONFIG_SND_SOC)	+= intel/

sound/soc/hisilicon/Kconfig

···
+config SND_I2S_HI6210_I2S
+	tristate "Hisilicon I2S controller"
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Hisilicon I2S

sound/soc/hisilicon/Makefile

···
+obj-$(CONFIG_SND_I2S_HI6210_I2S) += hi6210-i2s.o

sound/soc/hisilicon/hi6210-i2s.c

···
+/*
+ * linux/sound/soc/m8m/hi6210_i2s.c - I2S IP driver
+ *
+ * Copyright (C) 2015 Linaro, Ltd
+ * Author: Andy Green <[e-mail]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * This driver only deals with S2 interface (BT)
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/jiffies.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <linux/interrupt.h>
+#include <linux/reset.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/mfd/syscon.h>
+#include <linux/reset-controller.h>
+#include <linux/clk.h>
+
+#include "hi6210-i2s.h"
+
+struct hi6210_i2s {
+	struct device *dev;
+	struct reset_control *rc;
+	struct clk *clk[8];
+	int clocks;
+	struct snd_soc_dai_driver dai;
+	void __iomem *base;
+	struct regmap *sysctrl;
+	phys_addr_t base_phys;
+	struct snd_dmaengine_dai_dma_data dma_data[2];
+	int clk_rate;
+	spinlock_t lock;
+	int rate;
+	int format;
+	u8 bits;
+	u8 channels;
+	u8 id;
+	u8 channel_length;
+	u8 use;
+	u32 master:1;
+	u32 status:1;
+};
+
+#define SC_PERIPH_CLKEN1	0x210
+#define SC_PERIPH_CLKDIS1	0x214
+
+#define SC_PERIPH_CLKEN3	0x230
+#define SC_PERIPH_CLKDIS3	0x234
+
+#define SC_PERIPH_CLKEN12	0x270
+#define SC_PERIPH_CLKDIS12	0x274
+
+#define SC_PERIPH_RSTEN1	0x310
+#define SC_PERIPH_RSTDIS1	0x314
+#define SC_PERIPH_RSTSTAT1	0x318
+
+#define SC_PERIPH_RSTEN2	0x320
+#define SC_PERIPH_RSTDIS2	0x324
+#define SC_PERIPH_RSTSTAT2	0x328
+
+#define SOC_PMCTRL_BBPPLLALIAS	0x48
+
+enum {
+	CLK_DACODEC,
+	CLK_I2S_BASE,
+};
+
+static inline void hi6210_write_reg(struct hi6210_i2s *i2s, int reg, u32 val)
+{
+	writel(val, i2s->base + reg);
+}
+
+static inline u32 hi6210_read_reg(struct hi6210_i2s *i2s, int reg)
+{
+	return readl(i2s->base + reg);
+}
+
+int hi6210_i2s_startup(struct snd_pcm_substream *substream,
+		     struct snd_soc_dai *cpu_dai)
+{
+	struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+	int ret, n;
+	u32 val;
+
+	/* deassert reset on ABB */
+	regmap_read(i2s->sysctrl, SC_PERIPH_RSTSTAT2, &val);
+	if (val & BIT(4))
+		regmap_write(i2s->sysctrl, SC_PERIPH_RSTDIS2, BIT(4));
+
+	for (n = 0; n < i2s->clocks; n++) {
+		ret = clk_prepare_enable(i2s->clk[n]);
+		if (ret) {
+			while (n--)
+				clk_disable_unprepare(i2s->clk[n]);
+			return ret;
+		}
+	}
+
+	ret = clk_set_rate(i2s->clk[CLK_I2S_BASE], 49152000);
+	if (ret) {
+		dev_err(i2s->dev, "%s: setting 49.152MHz base rate failed %d\n",
+			__func__, ret);
+		return ret;
+	}
+
+	/* enable clock before frequency division */
+	regmap_write(i2s->sysctrl, SC_PERIPH_CLKEN12, BIT(9));
+
+	/* enable codec working clock / == "codec bus clock" */
+	regmap_write(i2s->sysctrl, SC_PERIPH_CLKEN1, BIT(5));
+
+	/* deassert reset on codec / interface clock / working clock */
+	regmap_write(i2s->sysctrl, SC_PERIPH_RSTEN1, BIT(5));
+	regmap_write(i2s->sysctrl, SC_PERIPH_RSTDIS1, BIT(5));
+
+	/* not interested in i2s irqs */
+	val = hi6210_read_reg(i2s, HII2S_CODEC_IRQ_MASK);
+	val |= 0x3f;
+	hi6210_write_reg(i2s, HII2S_CODEC_IRQ_MASK, val);
+
+
+	/* reset the stereo downlink fifo */
+	val = hi6210_read_reg(i2s, HII2S_APB_AFIFO_CFG_1);
+	val |= (BIT(5) | BIT(4));
+	hi6210_write_reg(i2s, HII2S_APB_AFIFO_CFG_1, val);
+
+	val = hi6210_read_reg(i2s, HII2S_APB_AFIFO_CFG_1);
+	val &= ~(BIT(5) | BIT(4));
+	hi6210_write_reg(i2s, HII2S_APB_AFIFO_CFG_1, val);
+
+
+	val = hi6210_read_reg(i2s, HII2S_SW_RST_N);
+	val &= ~(HII2S_SW_RST_N__ST_DL_WORDLEN_MASK <<
+			HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT);
+	val |= (HII2S_BITS_16 << HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT);
+	hi6210_write_reg(i2s, HII2S_SW_RST_N, val);
+
+	val = hi6210_read_reg(i2s, HII2S_MISC_CFG);
+	/* mux 11/12 = APB not i2s */
+	val &= ~HII2S_MISC_CFG__ST_DL_TEST_SEL;
+	/* BT R ch  0 = mixer op of DACR ch */
+	val &= ~HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL;
+	val &= ~HII2S_MISC_CFG__S2_DOUT_TEST_SEL;
+
+	val |= HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL;
+	/* BT L ch = 1 = mux 7 = "mixer output of DACL */
+	val |= HII2S_MISC_CFG__S2_DOUT_TEST_SEL;
+	hi6210_write_reg(i2s, HII2S_MISC_CFG, val);
+
+	val = hi6210_read_reg(i2s, HII2S_SW_RST_N);
+	val |= HII2S_SW_RST_N__SW_RST_N;
+	hi6210_write_reg(i2s, HII2S_SW_RST_N, val);
+
+	return 0;
+}
+void hi6210_i2s_shutdown(struct snd_pcm_substream *substream,
+		       struct snd_soc_dai *cpu_dai)
+{
+	struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+	int n;
+
+	for (n = 0; n < i2s->clocks; n++)
+		clk_disable_unprepare(i2s->clk[n]);
+
+	regmap_write(i2s->sysctrl, SC_PERIPH_RSTEN1, BIT(5));
+}
+
+static void hi6210_i2s_txctrl(struct snd_soc_dai *cpu_dai, int on)
+{
+	struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+	u32 val;
+
+	spin_lock(&i2s->lock);
+	if (on) {
+		/* enable S2 TX */
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val |= HII2S_I2S_CFG__S2_IF_TX_EN;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+	} else {
+		/* disable S2 TX */
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val &= ~HII2S_I2S_CFG__S2_IF_TX_EN;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+	}
+	spin_unlock(&i2s->lock);
+}
+
+static void hi6210_i2s_rxctrl(struct snd_soc_dai *cpu_dai, int on)
+{
+	struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+	u32 val;
+
+	spin_lock(&i2s->lock);
+	if (on) {
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val |= HII2S_I2S_CFG__S2_IF_RX_EN;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+	} else {
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val &= ~HII2S_I2S_CFG__S2_IF_RX_EN;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+	}
+	spin_unlock(&i2s->lock);
+}
+
+static int hi6210_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
+{
+	struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+
+	/*
+	 * We don't actually set the hardware until the hw_params
+	 * call, but we need to validate the user input here.
+	 */
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+	case SND_SOC_DAIFMT_CBS_CFS:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+	case SND_SOC_DAIFMT_LEFT_J:
+	case SND_SOC_DAIFMT_RIGHT_J:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	i2s->format = fmt;
+	i2s->master = (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) ==
+		      SND_SOC_DAIFMT_CBS_CFS;
+
+	return 0;
+}
+
+static int hi6210_i2s_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *cpu_dai)
+{
+	struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+	u32 bits = 0, rate = 0, signed_data = 0, fmt = 0;
+	u32 val;
+	struct snd_dmaengine_dai_dma_data *dma_data;
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_U16_LE:
+		signed_data = HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
+		/* fallthru */
+	case SNDRV_PCM_FORMAT_S16_LE:
+		bits = HII2S_BITS_16;
+		break;
+	case SNDRV_PCM_FORMAT_U24_LE:
+		signed_data = HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
+		/* fallthru */
+	case SNDRV_PCM_FORMAT_S24_LE:
+		bits = HII2S_BITS_24;
+		break;
+	default:
+		dev_err(cpu_dai->dev, "Bad format\n");
+		return -EINVAL;
+	}
+
+
+	switch (params_rate(params)) {
+	case 8000:
+		rate = HII2S_FS_RATE_8KHZ;
+		break;
+	case 16000:
+		rate = HII2S_FS_RATE_16KHZ;
+		break;
+	case 32000:
+		rate = HII2S_FS_RATE_32KHZ;
+		break;
+	case 48000:
+		rate = HII2S_FS_RATE_48KHZ;
+		break;
+	case 96000:
+		rate = HII2S_FS_RATE_96KHZ;
+		break;
+	case 192000:
+		rate = HII2S_FS_RATE_192KHZ;
+		break;
+	default:
+		dev_err(cpu_dai->dev, "Bad rate: %d\n", params_rate(params));
+		return -EINVAL;
+	}
+
+	if (!(params_channels(params))) {
+		dev_err(cpu_dai->dev, "Bad channels\n");
+		return -EINVAL;
+	}
+
+	dma_data = snd_soc_dai_get_dma_data(cpu_dai, substream);
+
+	switch (bits) {
+	case HII2S_BITS_24:
+		i2s->bits = 32;
+		dma_data->addr_width = 3;
+		break;
+	default:
+		i2s->bits = 16;
+		dma_data->addr_width = 2;
+	}
+	i2s->rate = params_rate(params);
+	i2s->channels = params_channels(params);
+	i2s->channel_length = i2s->channels * i2s->bits;
+
+	val = hi6210_read_reg(i2s, HII2S_ST_DL_FIFO_TH_CFG);
+	val &= ~((HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_MASK <<
+			HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT) |
+		(HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_MASK <<
+			HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT) |
+		(HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_MASK <<
+			HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT) |
+		(HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_MASK <<
+			HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT));
+	val |= ((16 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT) |
+		(30 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT) |
+		(16 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT) |
+		(30 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT));
+	hi6210_write_reg(i2s, HII2S_ST_DL_FIFO_TH_CFG, val);
+
+
+	val = hi6210_read_reg(i2s, HII2S_IF_CLK_EN_CFG);
+	val |= (BIT(19) | BIT(18) | BIT(17) |
+		HII2S_IF_CLK_EN_CFG__S2_IF_CLK_EN |
+		HII2S_IF_CLK_EN_CFG__S2_OL_MIXER_EN |
+		HII2S_IF_CLK_EN_CFG__S2_OL_SRC_EN |
+		HII2S_IF_CLK_EN_CFG__ST_DL_R_EN |
+		HII2S_IF_CLK_EN_CFG__ST_DL_L_EN);
+	hi6210_write_reg(i2s, HII2S_IF_CLK_EN_CFG, val);
+
+
+	val = hi6210_read_reg(i2s, HII2S_DIG_FILTER_CLK_EN_CFG);
+	val &= ~(HII2S_DIG_FILTER_CLK_EN_CFG__DACR_SDM_EN |
+		 HII2S_DIG_FILTER_CLK_EN_CFG__DACR_HBF2I_EN |
+		 HII2S_DIG_FILTER_CLK_EN_CFG__DACR_AGC_EN |
+		 HII2S_DIG_FILTER_CLK_EN_CFG__DACL_SDM_EN |
+		 HII2S_DIG_FILTER_CLK_EN_CFG__DACL_HBF2I_EN |
+		 HII2S_DIG_FILTER_CLK_EN_CFG__DACL_AGC_EN);
+	val |= (HII2S_DIG_FILTER_CLK_EN_CFG__DACR_MIXER_EN |
+		HII2S_DIG_FILTER_CLK_EN_CFG__DACL_MIXER_EN);
+	hi6210_write_reg(i2s, HII2S_DIG_FILTER_CLK_EN_CFG, val);
+
+
+	val = hi6210_read_reg(i2s, HII2S_DIG_FILTER_MODULE_CFG);
+	val &= ~(HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN2_MUTE |
+		 HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN2_MUTE);
+	hi6210_write_reg(i2s, HII2S_DIG_FILTER_MODULE_CFG, val);
+
+	val = hi6210_read_reg(i2s, HII2S_MUX_TOP_MODULE_CFG);
+	val &= ~(HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN1_MUTE |
+		 HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN2_MUTE |
+		 HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN1_MUTE |
+		 HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN2_MUTE);
+	hi6210_write_reg(i2s, HII2S_MUX_TOP_MODULE_CFG, val);
+
+
+	switch (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		i2s->master = false;
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val |= HII2S_I2S_CFG__S2_MST_SLV;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		i2s->master = true;
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val &= ~HII2S_I2S_CFG__S2_MST_SLV;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+		break;
+	default:
+		WARN_ONCE(1, "Invalid i2s->fmt MASTER_MASK. This shouldn't happen\n");
+	}
+
+	switch (i2s->format & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		fmt = HII2S_FORMAT_I2S;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		fmt = HII2S_FORMAT_LEFT_JUST;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		fmt = HII2S_FORMAT_RIGHT_JUST;
+		break;
+	default:
+		WARN_ONCE(1, "Invalid i2s->fmt FORMAT_MASK. This shouldn't happen\n");
+	}
+
+	val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+	val &= ~(HII2S_I2S_CFG__S2_FUNC_MODE_MASK <<
+			HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT);
+	val |= fmt << HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT;
+	hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+
+
+	val = hi6210_read_reg(i2s, HII2S_CLK_SEL);
+	val &= ~(HII2S_CLK_SEL__I2S_BT_FM_SEL | /* BT gets the I2S */
+			HII2S_CLK_SEL__EXT_12_288MHZ_SEL);
+	hi6210_write_reg(i2s, HII2S_CLK_SEL, val);
+
+	dma_data->maxburst = 2;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		dma_data->addr = i2s->base_phys + HII2S_ST_DL_CHANNEL;
+	else
+		dma_data->addr = i2s->base_phys + HII2S_STEREO_UPLINK_CHANNEL;
+
+	switch (i2s->channels) {
+	case 1:
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val |= HII2S_I2S_CFG__S2_FRAME_MODE;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+		break;
+	default:
+		val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+		val &= ~HII2S_I2S_CFG__S2_FRAME_MODE;
+		hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+	}
+
+	/* clear loopback, set signed type and word length */
+	val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+	val &= ~HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
+	val &= ~(HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_MASK <<
+			HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT);
+	val &= ~(HII2S_I2S_CFG__S2_DIRECT_LOOP_MASK <<
+			HII2S_I2S_CFG__S2_DIRECT_LOOP_SHIFT);
+	val |= signed_data;
+	val |= (bits << HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT);
+	hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+
+
+	if (!i2s->master)
+		return 0;
+
+	/* set DAC and related units to correct rate */
+	val = hi6210_read_reg(i2s, HII2S_FS_CFG);
+	val &= ~(HII2S_FS_CFG__FS_S2_MASK << HII2S_FS_CFG__FS_S2_SHIFT);
+	val &= ~(HII2S_FS_CFG__FS_DACLR_MASK << HII2S_FS_CFG__FS_DACLR_SHIFT);
+	val &= ~(HII2S_FS_CFG__FS_ST_DL_R_MASK <<
+					HII2S_FS_CFG__FS_ST_DL_R_SHIFT);
+	val &= ~(HII2S_FS_CFG__FS_ST_DL_L_MASK <<
+					HII2S_FS_CFG__FS_ST_DL_L_SHIFT);
+	val |= (rate << HII2S_FS_CFG__FS_S2_SHIFT);
+	val |= (rate << HII2S_FS_CFG__FS_DACLR_SHIFT);
+	val |= (rate << HII2S_FS_CFG__FS_ST_DL_R_SHIFT);
+	val |= (rate << HII2S_FS_CFG__FS_ST_DL_L_SHIFT);
+	hi6210_write_reg(i2s, HII2S_FS_CFG, val);
+
+	return 0;
+}
+
+static int hi6210_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+			  struct snd_soc_dai *cpu_dai)
+{
+	pr_debug("%s\n", __func__);
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+			hi6210_i2s_rxctrl(cpu_dai, 1);
+		else
+			hi6210_i2s_txctrl(cpu_dai, 1);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+			hi6210_i2s_rxctrl(cpu_dai, 0);
+		else
+			hi6210_i2s_txctrl(cpu_dai, 0);
+		break;
+	default:
+		dev_err(cpu_dai->dev, "uknown cmd\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int hi6210_i2s_dai_probe(struct snd_soc_dai *dai)
+{
+	struct hi6210_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+
+	snd_soc_dai_init_dma_data(dai,
+				  &i2s->dma_data[SNDRV_PCM_STREAM_PLAYBACK],
+				  &i2s->dma_data[SNDRV_PCM_STREAM_CAPTURE]);
+
+	return 0;
+}
+
+
+static struct snd_soc_dai_ops hi6210_i2s_dai_ops = {
+	.trigger	= hi6210_i2s_trigger,
+	.hw_params	= hi6210_i2s_hw_params,
+	.set_fmt	= hi6210_i2s_set_fmt,
+	.startup	= hi6210_i2s_startup,
+	.shutdown	= hi6210_i2s_shutdown,
+};
+
+struct snd_soc_dai_driver hi6210_i2s_dai_init = {
+	.probe		= hi6210_i2s_dai_probe,
+	.playback = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE |
+			   SNDRV_PCM_FMTBIT_U16_LE,
+		.rates = SNDRV_PCM_RATE_48000,
+	},
+	.capture = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE |
+			   SNDRV_PCM_FMTBIT_U16_LE,
+		.rates = SNDRV_PCM_RATE_48000,
+	},
+	.ops = &hi6210_i2s_dai_ops,
+};
+
+static const struct snd_soc_component_driver hi6210_i2s_i2s_comp = {
+	.name = "hi6210_i2s-i2s",
+};
+
+static int hi6210_i2s_probe(struct platform_device *pdev)
+{
+	struct device_node *node = pdev->dev.of_node;
+	struct device *dev = &pdev->dev;
+	struct hi6210_i2s *i2s;
+	struct resource *res;
+	int ret;
+
+	i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL);
+	if (!i2s)
+		return -ENOMEM;
+
+	i2s->dev = dev;
+	spin_lock_init(&i2s->lock);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	i2s->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(i2s->base))
+		return PTR_ERR(i2s->base);
+
+	i2s->base_phys = (phys_addr_t)res->start;
+	i2s->dai = hi6210_i2s_dai_init;
+
+	dev_set_drvdata(&pdev->dev, i2s);
+
+	i2s->sysctrl = syscon_regmap_lookup_by_phandle(node,
+						"hisilicon,sysctrl-syscon");
+	if (IS_ERR(i2s->sysctrl))
+		return PTR_ERR(i2s->sysctrl);
+
+	i2s->clk[CLK_DACODEC] = devm_clk_get(&pdev->dev, "dacodec");
+	if (IS_ERR_OR_NULL(i2s->clk[CLK_DACODEC]))
+		return PTR_ERR(i2s->clk[CLK_DACODEC]);
+	i2s->clocks++;
+
+	i2s->clk[CLK_I2S_BASE] = devm_clk_get(&pdev->dev, "i2s-base");
+	if (IS_ERR_OR_NULL(i2s->clk[CLK_I2S_BASE]))
+		return PTR_ERR(i2s->clk[CLK_I2S_BASE]);
+	i2s->clocks++;
+
+	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (ret)
+		return ret;
+
+	ret = snd_soc_register_component(&pdev->dev, &hi6210_i2s_i2s_comp,
+					 &i2s->dai, 1);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to register dai\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int hi6210_i2s_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_component(&pdev->dev);
+	dev_set_drvdata(&pdev->dev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id hi6210_i2s_dt_ids[] = {
+	{ .compatible = "hisilicon,hi6210-i2s" },
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, hi6210_i2s_dt_ids);
+
+static struct platform_driver hi6210_i2s_driver = {
+	.probe = hi6210_i2s_probe,
+	.remove = hi6210_i2s_remove,
+	.driver = {
+		.name = "hi6210_i2s",
+		.of_match_table = hi6210_i2s_dt_ids,
+	},
+};
+
+module_platform_driver(hi6210_i2s_driver);
+
+MODULE_DESCRIPTION("Hisilicon HI6210 I2S driver");
+MODULE_AUTHOR("Andy Green <[e-mail]>");
+MODULE_LICENSE("GPL");

sound/soc/hisilicon/hi6210-i2s.h

···
+/*
+ * linux/sound/soc/hisilicon/hi6210-i2s.h
+ *
+ * Copyright (C) 2015 Linaro, Ltd
+ * Author: Andy Green <[e-mail]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Note at least on 6220, S2 == BT, S1 == Digital FM Radio IF
+ */
+
+#ifndef _HI6210_I2S_H
+#define _HI6210_I2S_H
+
+#define HII2S_SW_RST_N				0
+
+#define HII2S_SW_RST_N__STEREO_UPLINK_WORDLEN_SHIFT			28
+#define HII2S_SW_RST_N__STEREO_UPLINK_WORDLEN_MASK			3
+#define HII2S_SW_RST_N__THIRDMD_UPLINK_WORDLEN_SHIFT			26
+#define HII2S_SW_RST_N__THIRDMD_UPLINK_WORDLEN_MASK			3
+#define HII2S_SW_RST_N__VOICE_UPLINK_WORDLEN_SHIFT			24
+#define HII2S_SW_RST_N__VOICE_UPLINK_WORDLEN_MASK			3
+#define HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT				20
+#define HII2S_SW_RST_N__ST_DL_WORDLEN_MASK				3
+#define HII2S_SW_RST_N__THIRDMD_DLINK_WORDLEN_SHIFT			18
+#define HII2S_SW_RST_N__THIRDMD_DLINK_WORDLEN_MASK			3
+#define HII2S_SW_RST_N__VOICE_DLINK_WORDLEN_SHIFT			16
+#define HII2S_SW_RST_N__VOICE_DLINK_WORDLEN_MASK			3
+
+#define HII2S_SW_RST_N__SW_RST_N					BIT(0)
+
+enum hi6210_bits {
+	HII2S_BITS_16,
+	HII2S_BITS_18,
+	HII2S_BITS_20,
+	HII2S_BITS_24,
+};
+
+
+#define HII2S_IF_CLK_EN_CFG			4
+
+#define HII2S_IF_CLK_EN_CFG__THIRDMD_UPLINK_EN				BIT(25)
+#define HII2S_IF_CLK_EN_CFG__THIRDMD_DLINK_EN				BIT(24)
+#define HII2S_IF_CLK_EN_CFG__S3_IF_CLK_EN				BIT(20)
+#define HII2S_IF_CLK_EN_CFG__S2_IF_CLK_EN				BIT(16)
+#define HII2S_IF_CLK_EN_CFG__S2_OL_MIXER_EN				BIT(15)
+#define HII2S_IF_CLK_EN_CFG__S2_OL_SRC_EN				BIT(14)
+#define HII2S_IF_CLK_EN_CFG__S2_IR_PGA_EN				BIT(13)
+#define HII2S_IF_CLK_EN_CFG__S2_IL_PGA_EN				BIT(12)
+#define HII2S_IF_CLK_EN_CFG__S1_IR_PGA_EN				BIT(10)
+#define HII2S_IF_CLK_EN_CFG__S1_IL_PGA_EN				BIT(9)
+#define HII2S_IF_CLK_EN_CFG__S1_IF_CLK_EN				BIT(8)
+#define HII2S_IF_CLK_EN_CFG__VOICE_DLINK_SRC_EN				BIT(7)
+#define HII2S_IF_CLK_EN_CFG__VOICE_DLINK_EN				BIT(6)
+#define HII2S_IF_CLK_EN_CFG__ST_DL_R_EN					BIT(5)
+#define HII2S_IF_CLK_EN_CFG__ST_DL_L_EN					BIT(4)
+#define HII2S_IF_CLK_EN_CFG__VOICE_UPLINK_R_EN				BIT(3)
+#define HII2S_IF_CLK_EN_CFG__VOICE_UPLINK_L_EN				BIT(2)
+#define HII2S_IF_CLK_EN_CFG__STEREO_UPLINK_R_EN				BIT(1)
+#define HII2S_IF_CLK_EN_CFG__STEREO_UPLINK_L_EN				BIT(0)
+
+#define HII2S_DIG_FILTER_CLK_EN_CFG		8
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_SDM_EN			BIT(30)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_HBF2I_EN			BIT(28)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_MIXER_EN			BIT(25)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_AGC_EN			BIT(24)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_SDM_EN			BIT(22)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_HBF2I_EN			BIT(20)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_MIXER_EN			BIT(17)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_AGC_EN			BIT(16)
+
+#define HII2S_FS_CFG				0xc
+
+#define HII2S_FS_CFG__FS_S2_SHIFT					28
+#define HII2S_FS_CFG__FS_S2_MASK					7
+#define HII2S_FS_CFG__FS_S1_SHIFT					24
+#define HII2S_FS_CFG__FS_S1_MASK					7
+#define HII2S_FS_CFG__FS_ADCLR_SHIFT					20
+#define HII2S_FS_CFG__FS_ADCLR_MASK					7
+#define HII2S_FS_CFG__FS_DACLR_SHIFT					16
+#define HII2S_FS_CFG__FS_DACLR_MASK					7
+#define HII2S_FS_CFG__FS_ST_DL_R_SHIFT					8
+#define HII2S_FS_CFG__FS_ST_DL_R_MASK					7
+#define HII2S_FS_CFG__FS_ST_DL_L_SHIFT					4
+#define HII2S_FS_CFG__FS_ST_DL_L_MASK					7
+#define HII2S_FS_CFG__FS_VOICE_DLINK_SHIFT				0
+#define HII2S_FS_CFG__FS_VOICE_DLINK_MASK				7
+
+enum hi6210_i2s_rates {
+	HII2S_FS_RATE_8KHZ = 0,
+	HII2S_FS_RATE_16KHZ = 1,
+	HII2S_FS_RATE_32KHZ = 2,
+	HII2S_FS_RATE_48KHZ = 4,
+	HII2S_FS_RATE_96KHZ = 5,
+	HII2S_FS_RATE_192KHZ = 6,
+};
+
+#define HII2S_I2S_CFG				0x10
+
+#define HII2S_I2S_CFG__S2_IF_TX_EN					BIT(31)
+#define HII2S_I2S_CFG__S2_IF_RX_EN					BIT(30)
+#define HII2S_I2S_CFG__S2_FRAME_MODE					BIT(29)
+#define HII2S_I2S_CFG__S2_MST_SLV					BIT(28)
+#define HII2S_I2S_CFG__S2_LRCK_MODE					BIT(27)
+#define HII2S_I2S_CFG__S2_CHNNL_MODE					BIT(26)
+#define HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT			24
+#define HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_MASK			3
+#define HII2S_I2S_CFG__S2_DIRECT_LOOP_SHIFT				22
+#define HII2S_I2S_CFG__S2_DIRECT_LOOP_MASK				3
+#define HII2S_I2S_CFG__S2_TX_CLK_SEL					BIT(21)
+#define HII2S_I2S_CFG__S2_RX_CLK_SEL					BIT(20)
+#define HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT				BIT(19)
+#define HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT				16
+#define HII2S_I2S_CFG__S2_FUNC_MODE_MASK				7
+#define HII2S_I2S_CFG__S1_IF_TX_EN					BIT(15)
+#define HII2S_I2S_CFG__S1_IF_RX_EN					BIT(14)
+#define HII2S_I2S_CFG__S1_FRAME_MODE					BIT(13)
+#define HII2S_I2S_CFG__S1_MST_SLV					BIT(12)
+#define HII2S_I2S_CFG__S1_LRCK_MODE					BIT(11)
+#define HII2S_I2S_CFG__S1_CHNNL_MODE					BIT(10)
+#define HII2S_I2S_CFG__S1_CODEC_IO_WORDLENGTH_SHIFT			8
+#define HII2S_I2S_CFG__S1_CODEC_IO_WORDLENGTH_MASK			3
+#define HII2S_I2S_CFG__S1_DIRECT_LOOP_SHIFT				6
+#define HII2S_I2S_CFG__S1_DIRECT_LOOP_MASK				3
+#define HII2S_I2S_CFG__S1_TX_CLK_SEL					BIT(5)
+#define HII2S_I2S_CFG__S1_RX_CLK_SEL					BIT(4)
+#define HII2S_I2S_CFG__S1_CODEC_DATA_FORMAT				BIT(3)
+#define HII2S_I2S_CFG__S1_FUNC_MODE_SHIFT				0
+#define HII2S_I2S_CFG__S1_FUNC_MODE_MASK				7
+
+enum hi6210_i2s_formats {
+	HII2S_FORMAT_I2S,
+	HII2S_FORMAT_PCM_STD,
+	HII2S_FORMAT_PCM_USER,
+	HII2S_FORMAT_LEFT_JUST,
+	HII2S_FORMAT_RIGHT_JUST,
+};
+
+#define HII2S_DIG_FILTER_MODULE_CFG		0x14
+
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_GAIN_SHIFT		28
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_GAIN_MASK		3
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN4_MUTE		BIT(27)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN3_MUTE		BIT(26)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN2_MUTE		BIT(25)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN1_MUTE		BIT(24)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_GAIN_SHIFT		20
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_GAIN_MASK		3
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN4_MUTE		BIT(19)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN3_MUTE		BIT(18)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN2_MUTE		BIT(17)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN1_MUTE		BIT(16)
+#define HII2S_DIG_FILTER_MODULE_CFG__SW_DACR_SDM_DITHER			BIT(9)
+#define HII2S_DIG_FILTER_MODULE_CFG__SW_DACL_SDM_DITHER			BIT(8)
+#define HII2S_DIG_FILTER_MODULE_CFG__LM_CODEC_DAC2ADC_SHIFT		4
+#define HII2S_DIG_FILTER_MODULE_CFG__LM_CODEC_DAC2ADC_MASK		7
+#define HII2S_DIG_FILTER_MODULE_CFG__RM_CODEC_DAC2ADC_SHIFT		0
+#define HII2S_DIG_FILTER_MODULE_CFG__RM_CODEC_DAC2ADC_MASK		7
+
+enum hi6210_gains {
+	HII2S_GAIN_100PC,
+	HII2S_GAIN_50PC,
+	HII2S_GAIN_25PC,
+};
+
+#define HII2S_MUX_TOP_MODULE_CFG		0x18
+
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_GAIN_SHIFT		14
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_GAIN_MASK		3
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN2_MUTE		BIT(13)
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN1_MUTE		BIT(12)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_GAIN_SHIFT		10
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_GAIN_MASK			3
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN2_MUTE			BIT(9)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN1_MUTE			BIT(8)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_SRC_RDY				BIT(6)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_SRC_MODE_SHIFT			4
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_SRC_MODE_MASK			3
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_SRC_RDY			BIT(3)
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_SRC_MODE_SHIFT		0
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_SRC_MODE_MASK		7
+
+enum hi6210_s2_src_mode {
+	HII2S_S2_SRC_MODE_3,
+	HII2S_S2_SRC_MODE_12,
+	HII2S_S2_SRC_MODE_6,
+	HII2S_S2_SRC_MODE_2,
+};
+
+enum hi6210_voice_dlink_src_mode {
+	HII2S_VOICE_DL_SRC_MODE_12 = 1,
+	HII2S_VOICE_DL_SRC_MODE_6,
+	HII2S_VOICE_DL_SRC_MODE_2,
+	HII2S_VOICE_DL_SRC_MODE_3,
+};
+
+#define HII2S_ADC_PGA_CFG			0x1c
+#define HII2S_S1_INPUT_PGA_CFG			0x20
+#define HII2S_S2_INPUT_PGA_CFG			0x24
+#define HII2S_ST_DL_PGA_CFG			0x28
+#define HII2S_VOICE_SIDETONE_DLINK_PGA_CFG	0x2c
+#define HII2S_APB_AFIFO_CFG_1			0x30
+#define HII2S_APB_AFIFO_CFG_2			0x34
+#define HII2S_ST_DL_FIFO_TH_CFG			0x38
+
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT			24
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_MASK			0x1f
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT			16
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_MASK			0x1f
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT			8
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_MASK			0x1f
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT			0
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_MASK			0x1f
+
+#define HII2S_STEREO_UPLINK_FIFO_TH_CFG		0x3c
+#define HII2S_VOICE_UPLINK_FIFO_TH_CFG		0x40
+#define HII2S_CODEC_IRQ_MASK			0x44
+#define HII2S_CODEC_IRQ				0x48
+#define HII2S_DACL_AGC_CFG_1			0x4c
+#define HII2S_DACL_AGC_CFG_2			0x50
+#define HII2S_DACR_AGC_CFG_1			0x54
+#define HII2S_DACR_AGC_CFG_2			0x58
+#define HII2S_DMIC_SIF_CFG			0x5c
+#define HII2S_MISC_CFG				0x60
+
+#define HII2S_MISC_CFG__THIRDMD_DLINK_TEST_SEL				BIT(17)
+#define HII2S_MISC_CFG__THIRDMD_DLINK_DIN_SEL				BIT(16)
+#define HII2S_MISC_CFG__S3_DOUT_RIGHT_SEL				BIT(14)
+#define HII2S_MISC_CFG__S3_DOUT_LEFT_SEL				BIT(13)
+#define HII2S_MISC_CFG__S3_DIN_TEST_SEL					BIT(12)
+#define HII2S_MISC_CFG__VOICE_DLINK_SRC_UP_DOUT_VLD_SEL			BIT(8)
+#define HII2S_MISC_CFG__VOICE_DLINK_TEST_SEL				BIT(7)
+#define HII2S_MISC_CFG__VOICE_DLINK_DIN_SEL				BIT(6)
+#define HII2S_MISC_CFG__ST_DL_TEST_SEL					BIT(4)
+#define HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL				BIT(3)
+#define HII2S_MISC_CFG__S2_DOUT_TEST_SEL				BIT(2)
+#define HII2S_MISC_CFG__S1_DOUT_TEST_SEL				BIT(1)
+#define HII2S_MISC_CFG__S2_DOUT_LEFT_SEL				BIT(0)
+
+#define HII2S_S2_SRC_CFG			0x64
+#define HII2S_MEM_CFG				0x68
+#define HII2S_THIRDMD_PCM_PGA_CFG		0x6c
+#define HII2S_THIRD_MODEM_FIFO_TH		0x70
+#define HII2S_S3_ANTI_FREQ_JITTER_TX_INC_CNT	0x74
+#define HII2S_S3_ANTI_FREQ_JITTER_TX_DEC_CNT	0x78
+#define HII2S_S3_ANTI_FREQ_JITTER_RX_INC_CNT	0x7c
+#define HII2S_S3_ANTI_FREQ_JITTER_RX_DEC_CNT	0x80
+#define HII2S_ANTI_FREQ_JITTER_EN		0x84
+#define HII2S_CLK_SEL				0x88
+
+/* 0 = BT owns the i2s */
+#define HII2S_CLK_SEL__I2S_BT_FM_SEL					BIT(0)
+/* 0 = internal source, 1 = ext */
+#define HII2S_CLK_SEL__EXT_12_288MHZ_SEL				BIT(1)
+
+
+#define HII2S_THIRDMD_DLINK_CHANNEL		0xe8
+#define HII2S_THIRDMD_ULINK_CHANNEL		0xec
+#define HII2S_VOICE_DLINK_CHANNEL		0xf0
+
+/* shovel data in here for playback */
+#define HII2S_ST_DL_CHANNEL			0xf4
+#define HII2S_STEREO_UPLINK_CHANNEL		0xf8
+#define HII2S_VOICE_UPLINK_CHANNEL		0xfc
+
+#endif/* _HI6210_I2S_H */