4 files changed, 616 insertions, 0 deletions

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 011d3ab7e64a..691abe7df087 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -23,6 +23,7 @@ config SND_SOC_ALL_CODECS
         select SND_SOC_AK4671 if I2C
         select SND_SOC_CS4270 if I2C
         select SND_SOC_MAX9877 if I2C
+        select SND_SOC_DA7210 if I2C
         select SND_SOC_PCM3008
         select SND_SOC_SPDIF
         select SND_SOC_SSM2602 if I2C
@@ -113,6 +114,9 @@ config SND_SOC_AK4671
 config SND_SOC_CS4270
         tristate
 
+config SND_SOC_DA7210
+        tristate
+
 # Cirrus Logic CS4270 Codec VD = 3.3V Errata
 # Select if you are affected by the errata where the part will not function
 # if MCLK divide-by-1.5 is selected and VD is set to 3.3V.  The driver will
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 0471d9044205..b328f293be65 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -10,6 +10,7 @@ snd-soc-ak4642-objs := ak4642.o
 snd-soc-ak4671-objs := ak4671.o
 snd-soc-cs4270-objs := cs4270.o
 snd-soc-cx20442-objs := cx20442.o
+snd-soc-da7210-objs := da7210.o
 snd-soc-l3-objs := l3.o
 snd-soc-pcm3008-objs := pcm3008.o
 snd-soc-spdif-objs := spdif_transciever.o
@@ -67,6 +68,7 @@ obj-$(CONFIG_SND_SOC_AK4642)	+= snd-soc-ak4642.o
 obj-$(CONFIG_SND_SOC_AK4671)    += snd-soc-ak4671.o
 obj-$(CONFIG_SND_SOC_CS4270)    += snd-soc-cs4270.o
 obj-$(CONFIG_SND_SOC_CX20442)   += snd-soc-cx20442.o
+obj-$(CONFIG_SND_SOC_DA7210)    += snd-soc-da7210.o
 obj-$(CONFIG_SND_SOC_L3)        += snd-soc-l3.o
 obj-$(CONFIG_SND_SOC_PCM3008)   += snd-soc-pcm3008.o
 obj-$(CONFIG_SND_SOC_SPDIF)     += snd-soc-spdif.o
diff --git a/sound/soc/codecs/da7210.c b/sound/soc/codecs/da7210.c
new file mode 100644
index 000000000000..14f5f344b1d5
--- /dev/null
+++ b/sound/soc/codecs/da7210.c
@@ -0,0 +1,586 @@
+/*
+ * DA7210 ALSA Soc codec driver
+ *
+ * Copyright (c) 2009 Dialog Semiconductor
+ * Written by David Chen <Dajun.chen@diasemi.com>
+ *
+ * Copyright (C) 2009 Renesas Solutions Corp.
+ * Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * Tested on SuperH Ecovec24 board with S16/S24 LE in 48KHz using I2S
+ *
+ * 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;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+#include <sound/initval.h>
+#include <asm/div64.h>
+
+#include "da7210.h"
+
+/* DA7210 register space */
+#define DA7210_STATUS                   0x02
+#define DA7210_STARTUP1                 0x03
+#define DA7210_MIC_L                    0x07
+#define DA7210_MIC_R                    0x08
+#define DA7210_INMIX_L                  0x0D
+#define DA7210_INMIX_R                  0x0E
+#define DA7210_ADC_HPF                  0x0F
+#define DA7210_ADC                      0x10
+#define DA7210_DAC_HPF                  0x14
+#define DA7210_DAC_L                    0x15
+#define DA7210_DAC_R                    0x16
+#define DA7210_DAC_SEL                  0x17
+#define DA7210_OUTMIX_L                 0x1C
+#define DA7210_OUTMIX_R                 0x1D
+#define DA7210_HP_L_VOL                 0x21
+#define DA7210_HP_R_VOL                 0x22
+#define DA7210_HP_CFG                   0x23
+#define DA7210_DAI_SRC_SEL              0x25
+#define DA7210_DAI_CFG1                 0x26
+#define DA7210_DAI_CFG3                 0x28
+#define DA7210_PLL_DIV3                 0x2B
+#define DA7210_PLL                      0x2C
+
+/* STARTUP1 bit fields */
+#define DA7210_SC_MST_EN                (1 << 0)
+
+/* MIC_L bit fields */
+#define DA7210_MICBIAS_EN               (1 << 6)
+#define DA7210_MIC_L_EN                 (1 << 7)
+
+/* MIC_R bit fields */
+#define DA7210_MIC_R_EN                 (1 << 7)
+
+/* INMIX_L bit fields */
+#define DA7210_IN_L_EN                  (1 << 7)
+
+/* INMIX_R bit fields */
+#define DA7210_IN_R_EN                  (1 << 7)
+
+/* ADC_HPF bit fields */
+#define DA7210_ADC_VOICE_EN             (1 << 7)
+
+/* ADC bit fields */
+#define DA7210_ADC_L_EN                 (1 << 3)
+#define DA7210_ADC_R_EN                 (1 << 7)
+
+/* DAC_SEL bit fields */
+#define DA7210_DAC_L_SRC_DAI_L          (4 << 0)
+#define DA7210_DAC_L_EN                 (1 << 3)
+#define DA7210_DAC_R_SRC_DAI_R          (5 << 4)
+#define DA7210_DAC_R_EN                 (1 << 7)
+
+/* OUTMIX_L bit fields */
+#define DA7210_OUT_L_EN                 (1 << 7)
+
+/* OUTMIX_R bit fields */
+#define DA7210_OUT_R_EN                 (1 << 7)
+
+/* HP_CFG bit fields */
+#define DA7210_HP_2CAP_MODE             (1 << 1)
+#define DA7210_HP_SENSE_EN              (1 << 2)
+#define DA7210_HP_L_EN                  (1 << 3)
+#define DA7210_HP_MODE                  (1 << 6)
+#define DA7210_HP_R_EN                  (1 << 7)
+
+/* DAI_SRC_SEL bit fields */
+#define DA7210_DAI_OUT_L_SRC            (6 << 0)
+#define DA7210_DAI_OUT_R_SRC            (7 << 4)
+
+/* DAI_CFG1 bit fields */
+#define DA7210_DAI_WORD_S16_LE          (0 << 0)
+#define DA7210_DAI_WORD_S24_LE          (2 << 0)
+#define DA7210_DAI_FLEN_64BIT           (1 << 2)
+#define DA7210_DAI_MODE_MASTER          (1 << 7)
+
+/* DAI_CFG3 bit fields */
+#define DA7210_DAI_FORMAT_I2SMODE       (0 << 0)
+#define DA7210_DAI_OE                   (1 << 3)
+#define DA7210_DAI_EN                   (1 << 7)
+
+/*PLL_DIV3 bit fields */
+#define DA7210_MCLK_RANGE_10_20_MHZ     (1 << 4)
+#define DA7210_PLL_BYP                  (1 << 6)
+
+/* PLL bit fields */
+#define DA7210_PLL_FS_48000             (11 << 0)
+
+#define DA7210_VERSION "0.0.1"
+
+/* Codec private data */
+struct da7210_priv {
+        struct snd_soc_codec codec;
+};
+
+static struct snd_soc_codec *da7210_codec;
+
+/*
+ * Register cache
+ */
+static const u8 da7210_reg[] = {
+        0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0  - R7  */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8  - RF  */
+        0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
+        0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
+        0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
+        0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
+        0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
+        0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
+        0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
+        0x00,                                           /* R88       */
+};
+
+/*
+ * Read da7210 register cache
+ */
+static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
+{
+        u8 *cache = codec->reg_cache;
+        BUG_ON(reg > ARRAY_SIZE(da7210_reg));
+        return cache[reg];
+}
+
+/*
+ * Write to the da7210 register space
+ */
+static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
+{
+        u8 *cache = codec->reg_cache;
+        u8 data[2];
+
+        BUG_ON(codec->volatile_register);
+
+        data[0] = reg & 0xff;
+        data[1] = value & 0xff;
+
+        if (reg >= codec->reg_cache_size)
+                return -EIO;
+
+        if (2 != codec->hw_write(codec->control_data, data, 2))
+                return -EIO;
+
+        cache[reg] = value;
+        return 0;
+}
+
+/*
+ * Read from the da7210 register space.
+ */
+static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
+{
+        if (DA7210_STATUS == reg)
+                return i2c_smbus_read_byte_data(codec->control_data, reg);
+
+        return da7210_read_reg_cache(codec, reg);
+}
+
+static int da7210_startup(struct snd_pcm_substream *substream,
+                          struct snd_soc_dai *dai)
+{
+        int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+        struct snd_soc_codec *codec = dai->codec;
+
+        if (is_play) {
+                /* PlayBack Volume 40 */
+                snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
+                snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
+
+                /* Enable Out */
+                snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
+                snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
+
+        } else {
+                /* Volume 7 */
+                snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
+                snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
+
+                /* Enable Mic */
+                snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
+                snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
+        }
+
+        return 0;
+}
+
+/*
+ * Set PCM DAI word length.
+ */
+static int da7210_hw_params(struct snd_pcm_substream *substream,
+                            struct snd_pcm_hw_params *params,
+                            struct snd_soc_dai *dai)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_device *socdev = rtd->socdev;
+        struct snd_soc_codec *codec = socdev->card->codec;
+        u32 dai_cfg1;
+        u32 reg, mask;
+
+        /* set DAI source to Left and Right ADC */
+        da7210_write(codec, DA7210_DAI_SRC_SEL,
+                     DA7210_DAI_OUT_R_SRC | DA7210_DAI_OUT_L_SRC);
+
+        /* Enable DAI */
+        da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE | DA7210_DAI_EN);
+
+        dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
+
+        switch (params_format(params)) {
+        case SNDRV_PCM_FORMAT_S16_LE:
+                dai_cfg1 |= DA7210_DAI_WORD_S16_LE;
+                break;
+        case SNDRV_PCM_FORMAT_S24_LE:
+                dai_cfg1 |= DA7210_DAI_WORD_S24_LE;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
+
+        /* FIXME
+         *
+         * It support 48K only now
+         */
+        switch (params_rate(params)) {
+        case 48000:
+                if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
+                        reg  = DA7210_DAC_HPF;
+                        mask = DA7210_DAC_VOICE_EN;
+                } else {
+                        reg  = DA7210_ADC_HPF;
+                        mask = DA7210_ADC_VOICE_EN;
+                }
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        snd_soc_update_bits(codec, reg, mask, 0);
+
+        return 0;
+}
+
+/*
+ * Set DAI mode and Format
+ */
+static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
+{
+        struct snd_soc_codec *codec = codec_dai->codec;
+        u32 dai_cfg1;
+        u32 dai_cfg3;
+
+        dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
+        dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
+
+        switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+        case SND_SOC_DAIFMT_CBM_CFM:
+                dai_cfg1 |= DA7210_DAI_MODE_MASTER;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        /* FIXME
+         *
+         * It support I2S only now
+         */
+        switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+        case SND_SOC_DAIFMT_I2S:
+                dai_cfg3 |= DA7210_DAI_FORMAT_I2SMODE;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        /* FIXME
+         *
+         * It support 64bit data transmission only now
+         */
+        dai_cfg1 |= DA7210_DAI_FLEN_64BIT;
+
+        da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
+        da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
+
+        return 0;
+}
+
+#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
+
+/* DAI operations */
+static struct snd_soc_dai_ops da7210_dai_ops = {
+        .startup        = da7210_startup,
+        .hw_params      = da7210_hw_params,
+        .set_fmt        = da7210_set_dai_fmt,
+};
+
+struct snd_soc_dai da7210_dai = {
+        .name = "DA7210 IIS",
+        .id = 0,
+        /* playback capabilities */
+        .playback = {
+                .stream_name = "Playback",
+                .channels_min = 1,
+                .channels_max = 2,
+                .rates = SNDRV_PCM_RATE_8000_96000,
+                .formats = DA7210_FORMATS,
+        },
+        /* capture capabilities */
+        .capture = {
+                .stream_name = "Capture",
+                .channels_min = 1,
+                .channels_max = 2,
+                .rates = SNDRV_PCM_RATE_8000_96000,
+                .formats = DA7210_FORMATS,
+        },
+        .ops = &da7210_dai_ops,
+};
+EXPORT_SYMBOL_GPL(da7210_dai);
+
+/*
+ * Initialize the DA7210 driver
+ * register the mixer and dsp interfaces with the kernel
+ */
+static int da7210_init(struct da7210_priv *da7210)
+{
+        struct snd_soc_codec *codec = &da7210->codec;
+        int ret = 0;
+
+        if (da7210_codec) {
+                dev_err(codec->dev, "Another da7210 is registered\n");
+                return -EINVAL;
+        }
+
+        mutex_init(&codec->mutex);
+        INIT_LIST_HEAD(&codec->dapm_widgets);
+        INIT_LIST_HEAD(&codec->dapm_paths);
+
+        codec->private_data     = da7210;
+        codec->name             = "DA7210";
+        codec->owner            = THIS_MODULE;
+        codec->read             = da7210_read;
+        codec->write            = da7210_write;
+        codec->dai              = &da7210_dai;
+        codec->num_dai          = 1;
+        codec->hw_write         = (hw_write_t)i2c_master_send;
+        codec->reg_cache_size   = ARRAY_SIZE(da7210_reg);
+        codec->reg_cache        = kmemdup(da7210_reg,
+                                          sizeof(da7210_reg), GFP_KERNEL);
+
+        if (!codec->reg_cache)
+                return -ENOMEM;
+
+        da7210_dai.dev = codec->dev;
+        da7210_codec = codec;
+
+        ret = snd_soc_register_codec(codec);
+        if (ret) {
+                dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
+                goto init_err;
+        }
+
+        ret = snd_soc_register_dai(&da7210_dai);
+        if (ret) {
+                dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
+                goto init_err;
+        }
+
+        /* FIXME
+         *
+         * This driver use fixed value here
+         */
+
+        /*
+         * ADC settings
+         */
+
+        /* Enable Left & Right MIC PGA and Mic Bias */
+        da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN | DA7210_MICBIAS_EN);
+        da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
+
+        /* Enable Left and Right input PGA */
+        da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
+        da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
+
+        /* Enable Left and Right ADC */
+        da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN | DA7210_ADC_R_EN);
+
+        /*
+         * DAC settings
+         */
+
+        /* Enable Left and Right DAC */
+        da7210_write(codec, DA7210_DAC_SEL,
+                     DA7210_DAC_L_SRC_DAI_L | DA7210_DAC_L_EN |
+                     DA7210_DAC_R_SRC_DAI_R | DA7210_DAC_R_EN);
+
+        /* Enable Left and Right out PGA */
+        da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
+        da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
+
+        /* Enable Left and Right HeadPhone PGA */
+        da7210_write(codec, DA7210_HP_CFG,
+                     DA7210_HP_2CAP_MODE | DA7210_HP_SENSE_EN |
+                     DA7210_HP_L_EN | DA7210_HP_MODE | DA7210_HP_R_EN);
+
+        /* Diable PLL and bypass it */
+        da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
+
+        /* Bypass PLL and set MCLK freq rang to 10-20MHz */
+        da7210_write(codec, DA7210_PLL_DIV3,
+                     DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
+
+        /* Activate all enabled subsystem */
+        da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
+
+        return ret;
+
+init_err:
+        kfree(codec->reg_cache);
+        codec->reg_cache = NULL;
+
+        return ret;
+
+}
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+static int da7210_i2c_probe(struct i2c_client *i2c,
+                            const struct i2c_device_id *id)
+{
+        struct da7210_priv *da7210;
+        struct snd_soc_codec *codec;
+        int ret;
+
+        da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
+        if (!da7210)
+                return -ENOMEM;
+
+        codec = &da7210->codec;
+        codec->dev = &i2c->dev;
+
+        i2c_set_clientdata(i2c, da7210);
+        codec->control_data = i2c;
+
+        ret = da7210_init(da7210);
+        if (ret < 0)
+                pr_err("Failed to initialise da7210 audio codec\n");
+
+        return ret;
+}
+
+static int da7210_i2c_remove(struct i2c_client *client)
+{
+        struct da7210_priv *da7210 = i2c_get_clientdata(client);
+
+        snd_soc_unregister_dai(&da7210_dai);
+        kfree(da7210->codec.reg_cache);
+        kfree(da7210);
+        da7210_codec = NULL;
+
+        return 0;
+}
+
+static const struct i2c_device_id da7210_i2c_id[] = {
+        { "da7210", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
+
+/* I2C codec control layer */
+static struct i2c_driver da7210_i2c_driver = {
+        .driver = {
+                .name = "DA7210 I2C Codec",
+                .owner = THIS_MODULE,
+        },
+        .probe = da7210_i2c_probe,
+        .remove =  __devexit_p(da7210_i2c_remove),
+        .id_table = da7210_i2c_id,
+};
+#endif
+
+static int da7210_probe(struct platform_device *pdev)
+{
+        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+        struct snd_soc_codec *codec;
+        int ret;
+
+        if (!da7210_codec) {
+                dev_err(&pdev->dev, "Codec device not registered\n");
+                return -ENODEV;
+        }
+
+        socdev->card->codec = da7210_codec;
+        codec = da7210_codec;
+
+        /* Register pcms */
+        ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+        if (ret < 0)
+                goto pcm_err;
+
+        dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
+
+pcm_err:
+        return ret;
+}
+
+static int da7210_remove(struct platform_device *pdev)
+{
+        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+        snd_soc_free_pcms(socdev);
+        snd_soc_dapm_free(socdev);
+
+        return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_da7210 = {
+        .probe =        da7210_probe,
+        .remove =       da7210_remove,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
+
+static int __init da7210_modinit(void)
+{
+        int ret = 0;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+        ret = i2c_add_driver(&da7210_i2c_driver);
+#endif
+        return ret;
+}
+module_init(da7210_modinit);
+
+static void __exit da7210_exit(void)
+{
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+        i2c_del_driver(&da7210_i2c_driver);
+#endif
+}
+module_exit(da7210_exit);
+
+MODULE_DESCRIPTION("ASoC DA7210 driver");
+MODULE_AUTHOR("David Chen, Kuninori Morimoto");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/da7210.h b/sound/soc/codecs/da7210.h
new file mode 100644
index 000000000000..390d621eb742
--- /dev/null
+++ b/sound/soc/codecs/da7210.h
@@ -0,0 +1,24 @@
+/*
+ * da7210.h  --  audio driver for da7210
+ *
+ * Copyright (c) 2009 Dialog Semiconductor
+ * Written by David Chen <Dajun.chen@diasemi.com>
+ *
+ * Copyright (C) 2009 Renesas Solutions Corp.
+ * Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * 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;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ */
+
+#ifndef _DA7210_H
+#define _DA7210_H
+
+extern struct snd_soc_dai da7210_dai;
+extern struct snd_soc_codec_device soc_codec_dev_da7210;
+
+#endif
+