- 根目录:
- sound
- soc
- codecs
- ml26124.c
/*
* Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include "ml26124.h"
#define DVOL_CTL_DVMUTE_ON BIT(4) /* Digital volume MUTE On */
#define DVOL_CTL_DVMUTE_OFF 0 /* Digital volume MUTE Off */
#define ML26124_SAI_NO_DELAY BIT(1)
#define ML26124_SAI_FRAME_SYNC (BIT(5) | BIT(0)) /* For mono (Telecodec) */
#define ML26134_CACHESIZE 212
#define ML26124_VMID BIT(1)
#define ML26124_RATES (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 |\
SNDRV_PCM_RATE_48000)
#define ML26124_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S32_LE)
#define ML26124_NUM_REGISTER ML26134_CACHESIZE
struct ml26124_priv {
u32 mclk;
u32 rate;
struct regmap *regmap;
int clk_in;
struct snd_pcm_substream *substream;
};
struct clk_coeff {
u32 mclk;
u32 rate;
u8 pllnl;
u8 pllnh;
u8 pllml;
u8 pllmh;
u8 plldiv;
};
/* ML26124 configuration */
static const DECLARE_TLV_DB_SCALE(digital_tlv, -7150, 50, 0);
static const DECLARE_TLV_DB_SCALE(alclvl, -2250, 150, 0);
static const DECLARE_TLV_DB_SCALE(mingain, -1200, 600, 0);
static const DECLARE_TLV_DB_SCALE(maxgain, -675, 600, 0);
static const DECLARE_TLV_DB_SCALE(boost_vol, -1200, 75, 0);
static const DECLARE_TLV_DB_SCALE(ngth, -7650, 150, 0);
static const char * const ml26124_companding[] = {"16bit PCM", "u-law",
"A-law"};
static const struct soc_enum ml26124_adc_companding_enum
= SOC_ENUM_SINGLE(ML26124_SAI_TRANS_CTL, 6, 3, ml26124_companding);
static const struct soc_enum ml26124_dac_companding_enum
= SOC_ENUM_SINGLE(ML26124_SAI_RCV_CTL, 6, 3, ml26124_companding);
static const struct snd_kcontrol_new ml26124_snd_controls[] = {
SOC_SINGLE_TLV("Capture Digital Volume", ML26124_RECORD_DIG_VOL, 0,
0xff, 1, digital_tlv),
SOC_SINGLE_TLV("Playback Digital Volume", ML26124_PLBAK_DIG_VOL, 0,
0xff, 1, digital_tlv),
SOC_SINGLE_TLV("Digital Boost Volume", ML26124_DIGI_BOOST_VOL, 0,
0x3f, 0, boost_vol),
SOC_SINGLE_TLV("EQ Band0 Volume", ML26124_EQ_GAIN_BRAND0, 0,
0xff, 1, digital_tlv),
SOC_SINGLE_TLV("EQ Band1 Volume", ML26124_EQ_GAIN_BRAND1, 0,
0xff, 1, digital_tlv),
SOC_SINGLE_TLV("EQ Band2 Volume", ML26124_EQ_GAIN_BRAND2, 0,
0xff, 1, digital_tlv),
SOC_SINGLE_TLV("EQ Band3 Volume", ML26124_EQ_GAIN_BRAND3, 0,
0xff, 1, digital_tlv),
SOC_SINGLE_TLV("EQ Band4 Volume", ML26124_EQ_GAIN_BRAND4, 0,
0xff, 1, digital_tlv),
SOC_SINGLE_TLV("ALC Target Level", ML26124_ALC_TARGET_LEV, 0,
0xf, 1, alclvl),
SOC_SINGLE_TLV("ALC Min Input Volume", ML26124_ALC_MAXMIN_GAIN, 0,
7, 0, mingain),
SOC_SINGLE_TLV("ALC Max Input Volume", ML26124_ALC_MAXMIN_GAIN, 4,
7, 1, maxgain),
SOC_SINGLE_TLV("Playback Limiter Min Input Volume",
ML26124_PL_MAXMIN_GAIN, 0, 7, 0, mingain),
SOC_SINGLE_TLV("Playback Limiter Max Input Volume",
ML26124_PL_MAXMIN_GAIN, 4, 7, 1, maxgain),
SOC_SINGLE_TLV("Playback Boost Volume", ML26124_PLYBAK_BOST_VOL, 0,
0x3f, 0, boost_vol),
SOC_SINGLE("DC High Pass Filter Switch", ML26124_FILTER_EN, 0, 1, 0),
SOC_SINGLE("Noise High Pass Filter Switch", ML26124_FILTER_EN, 1, 1, 0),
SOC_SINGLE("ZC Switch", ML26124_PW_ZCCMP_PW_MNG, 1,
1, 0),
SOC_SINGLE("EQ Band0 Switch", ML26124_FILTER_EN, 2, 1, 0),
SOC_SINGLE("EQ Band1 Switch", ML26124_FILTER_EN, 3, 1, 0),
SOC_SINGLE("EQ Band2 Switch", ML26124_FILTER_EN, 4, 1, 0),
SOC_SINGLE("EQ Band3 Switch", ML26124_FILTER_EN, 5, 1, 0),
SOC_SINGLE("EQ Band4 Switch", ML26124_FILTER_EN, 6, 1, 0),
SOC_SINGLE("Play Limiter", ML26124_DVOL_CTL, 0, 1, 0),
SOC_SINGLE("Capture Limiter", ML26124_DVOL_CTL, 1, 1, 0),
SOC_SINGLE("Digital Volume Fade Switch", ML26124_DVOL_CTL, 3, 1, 0),
SOC_SINGLE("Digital Switch", ML26124_DVOL_CTL, 4, 1, 0),
SOC_ENUM("DAC Companding", ml26124_dac_companding_enum),
SOC_ENUM("ADC Companding", ml26124_adc_companding_enum),
};
static const struct snd_kcontrol_new ml26124_output_mixer_controls[] = {
SOC_DAPM_SINGLE("DAC Switch", ML26124_SPK_AMP_OUT, 1, 1, 0),
SOC_DAPM_SINGLE("Line in loopback Switch", ML26124_SPK_AMP_OUT, 3, 1,
0),
SOC_DAPM_SINGLE("PGA Switch", ML26124_SPK_AMP_OUT, 5, 1, 0),
};
/* Input mux */
static const char * const ml26124_input_select[] = {"Analog MIC SingleEnded in",
"Digital MIC in", "Analog MIC Differential in"};
static const struct soc_enum ml26124_insel_enum =
SOC_ENUM_SINGLE(ML26124_MIC_IF_CTL, 0, 3, ml26124_input_select);
static const struct snd_kcontrol_new ml26124_input_mux_controls =
SOC_DAPM_ENUM("Input Select", ml26124_insel_enum);
static const struct snd_kcontrol_new ml26124_line_control =
SOC_DAPM_SINGLE("Switch", ML26124_PW_LOUT_PW_MNG, 1, 1, 0);
static const struct snd_soc_dapm_widget ml26124_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("MCLKEN", ML26124_CLK_EN, 0, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLLEN", ML26124_CLK_EN, 1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLLOE", ML26124_CLK_EN, 2, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("MICBIAS", ML26124_PW_REF_PW_MNG, 2, 0, NULL, 0),
SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
&ml26124_output_mixer_controls[0],
ARRAY_SIZE(ml26124_output_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "Playback", ML26124_PW_DAC_PW_MNG, 1, 0),
SND_SOC_DAPM_ADC("ADC", "Capture", ML26124_PW_IN_PW_MNG, 1, 0),
SND_SOC_DAPM_PGA("PGA", ML26124_PW_IN_PW_MNG, 3, 0, NULL, 0),
SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
&ml26124_input_mux_controls),
SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
&ml26124_line_control),
SND_SOC_DAPM_INPUT("MDIN"),
SND_SOC_DAPM_INPUT("MIN"),
SND_SOC_DAPM_INPUT("LIN"),
SND_SOC_DAPM_OUTPUT("SPOUT"),
SND_SOC_DAPM_OUTPUT("LOUT"),
};
static const struct snd_soc_dapm_route ml26124_intercon[] = {
/* Supply */
{"DAC", NULL, "MCLKEN"},
{"ADC", NULL, "MCLKEN"},
{"DAC", NULL, "PLLEN"},
{"ADC", NULL, "PLLEN"},
{"DAC", NULL, "PLLOE"},
{"ADC", NULL, "PLLOE"},
/* output mixer */
{"Output Mixer", "DAC Switch", "DAC"},
{"Output Mixer", "Line in loopback Switch", "LIN"},
/* outputs */
{"LOUT", NULL, "Output Mixer"},
{"SPOUT", NULL, "Output Mixer"},
{"Line Out Enable", NULL, "LOUT"},
/* input */
{"ADC", NULL, "Input Mux"},
{"Input Mux", "Analog MIC SingleEnded in", "PGA"},
{"Input Mux", "Analog MIC Differential in", "PGA"},
{"PGA", NULL, "MIN"},
};
/* PLLOutputFreq(Hz) = InputMclkFreq(Hz) * PLLM / (PLLN * PLLDIV) */
static const struct clk_coeff coeff_div[] = {
{12288000, 16000, 0xc, 0x0, 0x20, 0x0, 0x4},
{12288000, 32000, 0xc, 0x0, 0x20, 0x0, 0x4},
{12288000, 48000, 0xc, 0x0, 0x30, 0x0, 0x4},
};
static struct reg_default ml26124_reg[] = {
/* CLOCK control Register */
{0x00, 0x00 }, /* Sampling Rate */
{0x02, 0x00}, /* PLL NL */
{0x04, 0x00}, /* PLLNH */
{0x06, 0x00}, /* PLLML */
{0x08, 0x00}, /* MLLMH */
{0x0a, 0x00}, /* PLLDIV */
{0x0c, 0x00}, /* Clock Enable */
{0x0e, 0x00}, /* CLK Input/Output Control */
/* System Control Register */
{0x10, 0x00}, /* Software RESET */
{0x12, 0x00}, /* Record/Playback Run */
{0x14, 0x00}, /* Mic Input/Output control */
/* Power Management Register */
{0x20, 0x00}, /* Reference Power Management */
{0x22, 0x00}, /* Input Power Management */
{0x24, 0x00}, /* DAC Power Management */
{0x26, 0x00}, /* SP-AMP Power Management */
{0x28, 0x00}, /* LINEOUT Power Management */
{0x2a, 0x00}, /* VIDEO Power Management */
{0x2e, 0x00}, /* AC-CMP Power Management */
/* Analog reference Control Register */
{0x30, 0x04}, /* MICBIAS Voltage Control */
/* Input/Output Amplifier Control Register */
{0x32, 0x10}, /* MIC Input Volume */
{0x38, 0x00}, /* Mic Boost Volume */
{0x3a, 0x33}, /* Speaker AMP Volume */
{0x48, 0x00}, /* AMP Volume Control Function Enable */
{0x4a, 0x00}, /* Amplifier Volume Fader Control */
/* Analog Path Control Register */
{0x54, 0x00}, /* Speaker AMP Output Control */
{0x5a, 0x00}, /* Mic IF Control */
{0xe8, 0x01}, /* Mic Select Control */
/* Audio Interface Control Register */
{0x60, 0x00}, /* SAI-Trans Control */
{0x62, 0x00}, /* SAI-Receive Control */
{0x64, 0x00}, /* SAI Mode select */
/* DSP Control Register */
{0x66, 0x01}, /* Filter Func Enable */
{0x68, 0x00}, /* Volume Control Func Enable */
{0x6A, 0x00}, /* Mixer & Volume Control*/
{0x6C, 0xff}, /* Record Digital Volume */
{0x70, 0xff}, /* Playback Digital Volume */
{0x72, 0x10}, /* Digital Boost Volume */
{0x74, 0xe7}, /* EQ gain Band0 */
{0x76, 0xe7}, /* EQ gain Band1 */
{0x78, 0xe7}, /* EQ gain Band2 */
{0x7A, 0xe7}, /* EQ gain Band3 */
{0x7C, 0xe7}, /* EQ gain Band4 */
{0x7E, 0x00}, /* HPF2 CutOff*/
{0x80, 0x00}, /* EQ Band0 Coef0L */
{0x82, 0x00}, /* EQ Band0 Coef0H */
{0x84, 0x00}, /* EQ Band0 Coef0L */
{0x86, 0x00}, /* EQ Band0 Coef0H */
{0x88, 0x00}, /* EQ Band1 Coef0L */
{0x8A, 0x00}, /* EQ Band1 Coef0H */
{0x8C, 0x00}, /* EQ Band1 Coef0L */
{0x8E, 0x00}, /* EQ Band1 Coef0H */
{0x90, 0x00}, /* EQ Band2 Coef0L */
{0x92, 0x00}, /* EQ Band2 Coef0H */
{0x94, 0x00}, /* EQ Band2 Coef0L */
{0x96, 0x00}, /* EQ Band2 Coef0H */
{0x98, 0x00}, /* EQ Band3 Coef0L */
{0x9A, 0x00}, /* EQ Band3 Coef0H */
{0x9C, 0x00}, /* EQ Band3 Coef0L */
{0x9E, 0x00}, /* EQ Band3 Coef0H */
{0xA0, 0x00}, /* EQ Band4 Coef0L */
{0xA2, 0x00}, /* EQ Band4 Coef0H */
{0xA4, 0x00}, /* EQ Band4 Coef0L */
{0xA6, 0x00}, /* EQ Band4 Coef0H */
/* ALC Control Register */
{0xb0, 0x00}, /* ALC Mode */
{0xb2, 0x02}, /* ALC Attack Time */
{0xb4, 0x03}, /* ALC Decay Time */
{0xb6, 0x00}, /* ALC Hold Time */
{0xb8, 0x0b}, /* ALC Target Level */
{0xba, 0x70}, /* ALC Max/Min Gain */
{0xbc, 0x00}, /* Noise Gate Threshold */
{0xbe, 0x00}, /* ALC ZeroCross TimeOut */
/* Playback Limiter Control Register */
{0xc0, 0x04}, /* PL Attack Time */
{0xc2, 0x05}, /* PL Decay Time */
{0xc4, 0x0d}, /* PL Target Level */
{0xc6, 0x70}, /* PL Max/Min Gain */
{0xc8, 0x10}, /* Playback Boost Volume */
{0xca, 0x00}, /* PL ZeroCross TimeOut */
/* Video Amplifier Control Register */
{0xd0, 0x01}, /* VIDEO AMP Gain Control */
{0xd2, 0x01}, /* VIDEO AMP Setup 1 */
{0xd4, 0x01}, /* VIDEO AMP Control2 */
};
/* Get sampling rate value of sampling rate setting register (0x0) */
static inline int get_srate(int rate)
{
int srate;
switch (rate) {
case 16000:
srate = 3;
break;
case 32000:
srate = 6;
break;
case 48000:
srate = 8;
break;
default:
return -EINVAL;
}
return srate;
}
static inline int get_coeff(int mclk, int rate)
{
int i;
for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
return i;
}
return -EINVAL;
}
static int ml26124_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
int i = get_coeff(priv->mclk, params_rate(hw_params));
if (i < 0)
return i;
priv->substream = substream;
priv->rate = params_rate(hw_params);
if (priv->clk_in) {
switch (priv->mclk / params_rate(hw_params)) {
case 256:
snd_soc_update_bits(codec, ML26124_CLK_CTL,
BIT(0) | BIT(1), 1);
break;
case 512:
snd_soc_update_bits(codec, ML26124_CLK_CTL,
BIT(0) | BIT(1), 2);
break;
case 1024:
snd_soc_update_bits(codec, ML26124_CLK_CTL,
BIT(0) | BIT(1), 3);
break;
default:
dev_err(codec->dev, "Unsupported MCLKI\n");
break;
}
} else {
snd_soc_update_bits(codec, ML26124_CLK_CTL,
BIT(0) | BIT(1), 0);
}
switch (params_rate(hw_params)) {
case 16000:
snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf,
get_srate(params_rate(hw_params)));
snd_soc_update_bits(codec, ML26124_PLLNL, 0xff,
coeff_div[i].pllnl);
snd_soc_update_bits(codec, ML26124_PLLNH, 0x1,
coeff_div[i].pllnh);
snd_soc_update_bits(codec, ML26124_PLLML, 0xff,
coeff_div[i].pllml);
snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f,
coeff_div[i].pllmh);
snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f,
coeff_div[i].plldiv);
break;
case 32000:
snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf,
get_srate(params_rate(hw_params)));
snd_soc_update_bits(codec, ML26124_PLLNL, 0xff,
coeff_div[i].pllnl);
snd_soc_update_bits(codec, ML26124_PLLNH, 0x1,
coeff_div[i].pllnh);
snd_soc_update_bits(codec, ML26124_PLLML, 0xff,
coeff_div[i].pllml);
snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f,
coeff_div[i].pllmh);
snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f,
coeff_div[i].plldiv);
break;
case 48000:
snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf,
get_srate(params_rate(hw_params)));
snd_soc_update_bits(codec, ML26124_PLLNL, 0xff,
coeff_div[i].pllnl);
snd_soc_update_bits(codec, ML26124_PLLNH, 0x1,
coeff_div[i].pllnh);
snd_soc_update_bits(codec, ML26124_PLLML, 0xff,
coeff_div[i].pllml);
snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f,
coeff_div[i].pllmh);
snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f,
coeff_div[i].plldiv);
break;
default:
pr_err("%s:this rate is no support for ml26124\n", __func__);
return -EINVAL;
}
return 0;
}
static int ml26124_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
switch (priv->substream->stream) {
case SNDRV_PCM_STREAM_CAPTURE:
snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(0), 1);
break;
case SNDRV_PCM_STREAM_PLAYBACK:
snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(1), 2);
break;
}
if (mute)
snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4),
DVOL_CTL_DVMUTE_ON);
else
snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4),
DVOL_CTL_DVMUTE_OFF);
return 0;
}
static int ml26124_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
unsigned char mode;
struct snd_soc_codec *codec = codec_dai->codec;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
mode = 1;
break;
case SND_SOC_DAIFMT_CBS_CFS:
mode = 0;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, ML26124_SAI_MODE_SEL, BIT(0), mode);
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
break;
default:
return -EINVAL;
}
/* clock inversion */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
default:
return -EINVAL;
}
return 0;
}
static int ml26124_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
switch (clk_id) {
case ML26124_USE_PLLOUT:
priv->clk_in = ML26124_USE_PLLOUT;
break;
case ML26124_USE_MCLKI:
priv->clk_in = ML26124_USE_MCLKI;
break;
default:
return -EINVAL;
}
priv->mclk = freq;
return 0;
}
static int ml26124_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
switch (level) {
case SND_SOC_BIAS_ON:
snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG,
ML26124_R26_MASK, ML26124_BLT_PREAMP_ON);
msleep(100);
snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG,
ML26124_R26_MASK,
ML26124_MICBEN_ON | ML26124_BLT_ALL_ON);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
/* VMID ON */
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG,
ML26124_VMID, ML26124_VMID);
msleep(500);
regcache_sync(priv->regmap);
}
break;
case SND_SOC_BIAS_OFF:
/* VMID OFF */
snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG,
ML26124_VMID, 0);
break;
}
codec->dapm.bias_level = level;
return 0;
}
static const struct snd_soc_dai_ops ml26124_dai_ops = {
.hw_params = ml26124_hw_params,
.digital_mute = ml26124_mute,
.set_fmt = ml26124_set_dai_fmt,
.set_sysclk = ml26124_set_dai_sysclk,
};
static struct snd_soc_dai_driver ml26124_dai = {
.name = "ml26124-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = ML26124_RATES,
.formats = ML26124_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = ML26124_RATES,
.formats = ML26124_FORMATS,},
.ops = &ml26124_dai_ops,
.symmetric_rates = 1,
};
#ifdef CONFIG_PM
static int ml26124_suspend(struct snd_soc_codec *codec)
{
ml26124_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int ml26124_resume(struct snd_soc_codec *codec)
{
ml26124_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
#else
#define ml26124_suspend NULL
#define ml26124_resume NULL
#endif
static int ml26124_probe(struct snd_soc_codec *codec)
{
int ret;
struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
codec->control_data = priv->regmap;
ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
/* Software Reset */
snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 1);
snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 0);
ml26124_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_ml26124 = {
.probe = ml26124_probe,
.suspend = ml26124_suspend,
.resume = ml26124_resume,
.set_bias_level = ml26124_set_bias_level,
.dapm_widgets = ml26124_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ml26124_dapm_widgets),
.dapm_routes = ml26124_intercon,
.num_dapm_routes = ARRAY_SIZE(ml26124_intercon),
.controls = ml26124_snd_controls,
.num_controls = ARRAY_SIZE(ml26124_snd_controls),
};
static const struct regmap_config ml26124_i2c_regmap = {
.val_bits = 8,
.reg_bits = 8,
.max_register = ML26124_NUM_REGISTER,
.reg_defaults = ml26124_reg,
.num_reg_defaults = ARRAY_SIZE(ml26124_reg),
.cache_type = REGCACHE_RBTREE,
.write_flag_mask = 0x01,
};
static int ml26124_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct ml26124_priv *priv;
int ret;
priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
i2c_set_clientdata(i2c, priv);
priv->regmap = devm_regmap_init_i2c(i2c, &ml26124_i2c_regmap);
if (IS_ERR(priv->regmap)) {
ret = PTR_ERR(priv->regmap);
dev_err(&i2c->dev, "regmap_init_i2c() failed: %d\n", ret);
return ret;
}
return snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_ml26124, &ml26124_dai, 1);
}
static int ml26124_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id ml26124_i2c_id[] = {
{ "ml26124", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ml26124_i2c_id);
static struct i2c_driver ml26124_i2c_driver = {
.driver = {
.name = "ml26124",
.owner = THIS_MODULE,
},
.probe = ml26124_i2c_probe,
.remove = ml26124_i2c_remove,
.id_table = ml26124_i2c_id,
};
module_i2c_driver(ml26124_i2c_driver);
MODULE_AUTHOR("Tomoya MORINAGA <tomoya.rohm@gmail.com>");
MODULE_DESCRIPTION("LAPIS Semiconductor ML26124 ALSA SoC codec driver");
MODULE_LICENSE("GPL");