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kernel-fxtec-pro1x/sound/soc/codecs/da7210.c
Axel Lin 085efd28b6 ASoC: da7210: fix a memory leak if failed to initialise da7210 audio codec 
da7210 should be kfreed if da7210_init() return error.
This patch also fixes the error handing in the case of snd_soc_register_dai()
fail by adding snd_soc_unregister_codec() in error path.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-08-03 07:43:52 +01:00

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18 KiB
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/*
* 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/delay.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.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"
/*
* Playback Volume
*
* max : 0x3F (+15.0 dB)
* (1.5 dB step)
* min : 0x11 (-54.0 dB)
* mute : 0x10
* reserved : 0x00 - 0x0F
*
* ** FIXME **
*
* Reserved area are considered as "mute".
* -> min = -79.5 dB
*/
static const DECLARE_TLV_DB_SCALE(hp_out_tlv, -7950, 150, 1);
static const struct snd_kcontrol_new da7210_snd_controls[] = {
SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
DA7210_HP_L_VOL, DA7210_HP_R_VOL,
0, 0x3F, 0, hp_out_tlv),
};
/* 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) {
/* 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);
snd_soc_codec_set_drvdata(codec, 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 codec_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;
codec_err:
snd_soc_unregister_codec(codec);
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");
kfree(da7210);
}
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;
snd_soc_add_controls(da7210_codec, da7210_snd_controls,
ARRAY_SIZE(da7210_snd_controls));
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");
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