Logo Search packages:      
Sourcecode: alsa-driver version File versions  Download package

da7210.c

/*
 * 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 <linux/slab.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_DIV1             0x29
#define DA7210_PLL_DIV2             0x2A
#define DA7210_PLL_DIV3             0x2B
#define DA7210_PLL                  0x2C
#define DA7210_A_HID_UNLOCK         0x8A
#define DA7210_A_TEST_UNLOCK        0x8B
#define DA7210_A_PLL1               0x90
#define DA7210_A_CP_MODE            0xA7

/* 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 bit fields */
#define DA7210_ADC_L_EN             (1 << 3)
#define DA7210_ADC_R_EN             (1 << 7)

/* DAC/ADC HPF fields */
#define DA7210_VOICE_F0_MASK        (0x7 << 4)
#define DA7210_VOICE_F0_25          (1 << 4)
#define DA7210_VOICE_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_MASK          (0xF << 0)
#define DA7210_PLL_FS_8000          (0x1 << 0)
#define DA7210_PLL_FS_11025         (0x2 << 0)
#define DA7210_PLL_FS_12000         (0x3 << 0)
#define DA7210_PLL_FS_16000         (0x5 << 0)
#define DA7210_PLL_FS_22050         (0x6 << 0)
#define DA7210_PLL_FS_24000         (0x7 << 0)
#define DA7210_PLL_FS_32000         (0x9 << 0)
#define DA7210_PLL_FS_44100         (0xA << 0)
#define DA7210_PLL_FS_48000         (0xB << 0)
#define DA7210_PLL_FS_88200         (0xE << 0)
#define DA7210_PLL_FS_96000         (0xF << 0)
#define DA7210_PLL_EN               (0x1 << 7)

#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 hpf_reg, hpf_mask, hpf_value;
      u32 fs, bypass;

      /* 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);

      hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
            DA7210_DAC_HPF : DA7210_ADC_HPF;

      switch (params_rate(params)) {
      case 8000:
            fs          = DA7210_PLL_FS_8000;
            hpf_mask    = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
            hpf_value   = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
            bypass            = DA7210_PLL_BYP;
            break;
      case 11025:
            fs          = DA7210_PLL_FS_11025;
            hpf_mask    = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
            hpf_value   = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
            bypass            = 0;
            break;
      case 12000:
            fs          = DA7210_PLL_FS_12000;
            hpf_mask    = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
            hpf_value   = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
            bypass            = DA7210_PLL_BYP;
            break;
      case 16000:
            fs          = DA7210_PLL_FS_16000;
            hpf_mask    = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
            hpf_value   = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
            bypass            = DA7210_PLL_BYP;
            break;
      case 22050:
            fs          = DA7210_PLL_FS_22050;
            hpf_mask    = DA7210_VOICE_EN;
            hpf_value   = 0;
            bypass            = 0;
            break;
      case 32000:
            fs          = DA7210_PLL_FS_32000;
            hpf_mask    = DA7210_VOICE_EN;
            hpf_value   = 0;
            bypass            = DA7210_PLL_BYP;
            break;
      case 44100:
            fs          = DA7210_PLL_FS_44100;
            hpf_mask    = DA7210_VOICE_EN;
            hpf_value   = 0;
            bypass            = 0;
            break;
      case 48000:
            fs          = DA7210_PLL_FS_48000;
            hpf_mask    = DA7210_VOICE_EN;
            hpf_value   = 0;
            bypass            = DA7210_PLL_BYP;
            break;
      case 88200:
            fs          = DA7210_PLL_FS_88200;
            hpf_mask    = DA7210_VOICE_EN;
            hpf_value   = 0;
            bypass            = 0;
            break;
      case 96000:
            fs          = DA7210_PLL_FS_96000;
            hpf_mask    = DA7210_VOICE_EN;
            hpf_value   = 0;
            bypass            = DA7210_PLL_BYP;
            break;
      default:
            return -EINVAL;
      }

      /* Disable active mode */
      snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);

      snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
      snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
      snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);

      /* Enable active mode */
      snd_soc_update_bits(codec, DA7210_STARTUP1,
                      DA7210_SC_MST_EN, DA7210_SC_MST_EN);

      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,
      .symmetric_rates = 1,
};
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
       * And below settings expects MCLK = 12.288MHz
       *
       * When you select different MCLK, please check...
       *      DA7210_PLL_DIV1 val
       *      DA7210_PLL_DIV2 val
       *      DA7210_PLL_DIV3 val
       *      DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
       */

      /*
       * make sure that DA7210 use bypass mode before start up
       */
      da7210_write(codec, DA7210_STARTUP1, 0);
      da7210_write(codec, DA7210_PLL_DIV3,
                 DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);

      /*
       * 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);

      /*
       * If 48kHz sound came, it use bypass mode,
       * and when it is 44.1kHz, it use PLL.
       *
       * This time, this driver sets PLL always ON
       * and controls bypass/PLL mode by switching
       * DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
       *   see da7210_hw_params
       */
      da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
      da7210_write(codec, DA7210_PLL_DIV2, 0x99);
      da7210_write(codec, DA7210_PLL_DIV3, 0x0A |
                 DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
      snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);

      /* As suggested by Dialog */
      da7210_write(codec, DA7210_A_HID_UNLOCK,  0x8B); /* unlock */
      da7210_write(codec, DA7210_A_TEST_UNLOCK, 0xB4);
      da7210_write(codec, DA7210_A_PLL1,        0x01);
      da7210_write(codec, DA7210_A_CP_MODE,           0x7C);
      da7210_write(codec, DA7210_A_HID_UNLOCK,  0x00); /* re-lock */
      da7210_write(codec, DA7210_A_TEST_UNLOCK, 0x00);

      /* 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 __devinit 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 __devexit 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");

Generated by  Doxygen 1.6.0   Back to index