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linux-next/sound/soc/codecs/max98925.c
Kuninori Morimoto 4a4339d947 ASoC: codec duplicated callback function goes to component on max98925 
codec driver and component driver has duplicated callback functions,
and codec side functions are just copied to component side when
register timing. This was quick-hack, but no longer needed.
This patch moves these functions from codec driver to component driver.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-08 11:57:57 +01:00

654 lines
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/*
* max98925.c -- ALSA SoC Stereo MAX98925 driver
* Copyright 2013-15 Maxim Integrated Products
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/cdev.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include "max98925.h"
static const char *const dai_text[] = {
"Left", "Right", "LeftRight", "LeftRightDiv2",
};
static const char * const max98925_boost_voltage_text[] = {
"8.5V", "8.25V", "8.0V", "7.75V", "7.5V", "7.25V", "7.0V", "6.75V",
"6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V"
};
static SOC_ENUM_SINGLE_DECL(max98925_boost_voltage,
MAX98925_CONFIGURATION, M98925_BST_VOUT_SHIFT,
max98925_boost_voltage_text);
static const char *const hpf_text[] = {
"Disable", "DC Block", "100Hz", "200Hz", "400Hz", "800Hz",
};
static const struct reg_default max98925_reg[] = {
{ 0x0B, 0x00 }, /* IRQ Enable0 */
{ 0x0C, 0x00 }, /* IRQ Enable1 */
{ 0x0D, 0x00 }, /* IRQ Enable2 */
{ 0x0E, 0x00 }, /* IRQ Clear0 */
{ 0x0F, 0x00 }, /* IRQ Clear1 */
{ 0x10, 0x00 }, /* IRQ Clear2 */
{ 0x11, 0xC0 }, /* Map0 */
{ 0x12, 0x00 }, /* Map1 */
{ 0x13, 0x00 }, /* Map2 */
{ 0x14, 0xF0 }, /* Map3 */
{ 0x15, 0x00 }, /* Map4 */
{ 0x16, 0xAB }, /* Map5 */
{ 0x17, 0x89 }, /* Map6 */
{ 0x18, 0x00 }, /* Map7 */
{ 0x19, 0x00 }, /* Map8 */
{ 0x1A, 0x06 }, /* DAI Clock Mode 1 */
{ 0x1B, 0xC0 }, /* DAI Clock Mode 2 */
{ 0x1C, 0x00 }, /* DAI Clock Divider Denominator MSBs */
{ 0x1D, 0x00 }, /* DAI Clock Divider Denominator LSBs */
{ 0x1E, 0xF0 }, /* DAI Clock Divider Numerator MSBs */
{ 0x1F, 0x00 }, /* DAI Clock Divider Numerator LSBs */
{ 0x20, 0x50 }, /* Format */
{ 0x21, 0x00 }, /* TDM Slot Select */
{ 0x22, 0x00 }, /* DOUT Configuration VMON */
{ 0x23, 0x00 }, /* DOUT Configuration IMON */
{ 0x24, 0x00 }, /* DOUT Configuration VBAT */
{ 0x25, 0x00 }, /* DOUT Configuration VBST */
{ 0x26, 0x00 }, /* DOUT Configuration FLAG */
{ 0x27, 0xFF }, /* DOUT HiZ Configuration 1 */
{ 0x28, 0xFF }, /* DOUT HiZ Configuration 2 */
{ 0x29, 0xFF }, /* DOUT HiZ Configuration 3 */
{ 0x2A, 0xFF }, /* DOUT HiZ Configuration 4 */
{ 0x2B, 0x02 }, /* DOUT Drive Strength */
{ 0x2C, 0x90 }, /* Filters */
{ 0x2D, 0x00 }, /* Gain */
{ 0x2E, 0x02 }, /* Gain Ramping */
{ 0x2F, 0x00 }, /* Speaker Amplifier */
{ 0x30, 0x0A }, /* Threshold */
{ 0x31, 0x00 }, /* ALC Attack */
{ 0x32, 0x80 }, /* ALC Atten and Release */
{ 0x33, 0x00 }, /* ALC Infinite Hold Release */
{ 0x34, 0x92 }, /* ALC Configuration */
{ 0x35, 0x01 }, /* Boost Converter */
{ 0x36, 0x00 }, /* Block Enable */
{ 0x37, 0x00 }, /* Configuration */
{ 0x38, 0x00 }, /* Global Enable */
{ 0x3A, 0x00 }, /* Boost Limiter */
};
static const struct soc_enum max98925_dai_enum =
SOC_ENUM_SINGLE(MAX98925_GAIN, 5, ARRAY_SIZE(dai_text), dai_text);
static const struct soc_enum max98925_hpf_enum =
SOC_ENUM_SINGLE(MAX98925_FILTERS, 0, ARRAY_SIZE(hpf_text), hpf_text);
static const struct snd_kcontrol_new max98925_hpf_sel_mux =
SOC_DAPM_ENUM("Rc Filter MUX Mux", max98925_hpf_enum);
static const struct snd_kcontrol_new max98925_dai_sel_mux =
SOC_DAPM_ENUM("DAI IN MUX Mux", max98925_dai_enum);
static int max98925_dac_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
regmap_update_bits(max98925->regmap,
MAX98925_BLOCK_ENABLE,
M98925_BST_EN_MASK |
M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK,
M98925_BST_EN_MASK |
M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK);
break;
case SND_SOC_DAPM_POST_PMD:
regmap_update_bits(max98925->regmap,
MAX98925_BLOCK_ENABLE, M98925_BST_EN_MASK |
M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK, 0);
break;
default:
return 0;
}
return 0;
}
static const struct snd_soc_dapm_widget max98925_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_MUX("DAI IN MUX", SND_SOC_NOPM, 0, 0,
&max98925_dai_sel_mux),
SND_SOC_DAPM_MUX("Rc Filter MUX", SND_SOC_NOPM, 0, 0,
&max98925_hpf_sel_mux),
SND_SOC_DAPM_DAC_E("Amp Enable", NULL, MAX98925_BLOCK_ENABLE,
M98925_SPK_EN_SHIFT, 0, max98925_dac_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("Global Enable", MAX98925_GLOBAL_ENABLE,
M98925_EN_SHIFT, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("BE_OUT"),
};
static const struct snd_soc_dapm_route max98925_audio_map[] = {
{"DAI IN MUX", "Left", "DAI_OUT"},
{"DAI IN MUX", "Right", "DAI_OUT"},
{"DAI IN MUX", "LeftRight", "DAI_OUT"},
{"DAI IN MUX", "LeftRightDiv2", "DAI_OUT"},
{"Rc Filter MUX", "Disable", "DAI IN MUX"},
{"Rc Filter MUX", "DC Block", "DAI IN MUX"},
{"Rc Filter MUX", "100Hz", "DAI IN MUX"},
{"Rc Filter MUX", "200Hz", "DAI IN MUX"},
{"Rc Filter MUX", "400Hz", "DAI IN MUX"},
{"Rc Filter MUX", "800Hz", "DAI IN MUX"},
{"Amp Enable", NULL, "Rc Filter MUX"},
{"BE_OUT", NULL, "Amp Enable"},
{"BE_OUT", NULL, "Global Enable"},
};
static bool max98925_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case MAX98925_VBAT_DATA:
case MAX98925_VBST_DATA:
case MAX98925_LIVE_STATUS0:
case MAX98925_LIVE_STATUS1:
case MAX98925_LIVE_STATUS2:
case MAX98925_STATE0:
case MAX98925_STATE1:
case MAX98925_STATE2:
case MAX98925_FLAG0:
case MAX98925_FLAG1:
case MAX98925_FLAG2:
case MAX98925_REV_VERSION:
return true;
default:
return false;
}
}
static bool max98925_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case MAX98925_IRQ_CLEAR0:
case MAX98925_IRQ_CLEAR1:
case MAX98925_IRQ_CLEAR2:
case MAX98925_ALC_HOLD_RLS:
return false;
default:
return true;
}
}
static DECLARE_TLV_DB_SCALE(max98925_spk_tlv, -600, 100, 0);
static const struct snd_kcontrol_new max98925_snd_controls[] = {
SOC_SINGLE_TLV("Speaker Volume", MAX98925_GAIN,
M98925_SPK_GAIN_SHIFT, (1<<M98925_SPK_GAIN_WIDTH)-1, 0,
max98925_spk_tlv),
SOC_SINGLE("Ramp Switch", MAX98925_GAIN_RAMPING,
M98925_SPK_RMP_EN_SHIFT, 1, 0),
SOC_SINGLE("ZCD Switch", MAX98925_GAIN_RAMPING,
M98925_SPK_ZCD_EN_SHIFT, 1, 0),
SOC_SINGLE("ALC Switch", MAX98925_THRESHOLD,
M98925_ALC_EN_SHIFT, 1, 0),
SOC_SINGLE("ALC Threshold", MAX98925_THRESHOLD, M98925_ALC_TH_SHIFT,
(1<<M98925_ALC_TH_WIDTH)-1, 0),
SOC_ENUM("Boost Output Voltage", max98925_boost_voltage),
};
/* codec sample rate and n/m dividers parameter table */
static const struct {
int rate;
int sr;
int divisors[3][2];
} rate_table[] = {
{
.rate = 8000,
.sr = 0,
.divisors = { {1, 375}, {5, 1764}, {1, 384} }
},
{
.rate = 11025,
.sr = 1,
.divisors = { {147, 40000}, {1, 256}, {147, 40960} }
},
{
.rate = 12000,
.sr = 2,
.divisors = { {1, 250}, {5, 1176}, {1, 256} }
},
{
.rate = 16000,
.sr = 3,
.divisors = { {2, 375}, {5, 882}, {1, 192} }
},
{
.rate = 22050,
.sr = 4,
.divisors = { {147, 20000}, {1, 128}, {147, 20480} }
},
{
.rate = 24000,
.sr = 5,
.divisors = { {1, 125}, {5, 588}, {1, 128} }
},
{
.rate = 32000,
.sr = 6,
.divisors = { {4, 375}, {5, 441}, {1, 96} }
},
{
.rate = 44100,
.sr = 7,
.divisors = { {147, 10000}, {1, 64}, {147, 10240} }
},
{
.rate = 48000,
.sr = 8,
.divisors = { {2, 125}, {5, 294}, {1, 64} }
},
};
static inline int max98925_rate_value(struct snd_soc_codec *codec,
int rate, int clock, int *value, int *n, int *m)
{
int ret = -EINVAL;
int i;
for (i = 0; i < ARRAY_SIZE(rate_table); i++) {
if (rate_table[i].rate >= rate) {
*value = rate_table[i].sr;
*n = rate_table[i].divisors[clock][0];
*m = rate_table[i].divisors[clock][1];
ret = 0;
break;
}
}
return ret;
}
static void max98925_set_sense_data(struct max98925_priv *max98925)
{
/* set VMON slots */
regmap_update_bits(max98925->regmap,
MAX98925_DOUT_CFG_VMON,
M98925_DAI_VMON_EN_MASK, M98925_DAI_VMON_EN_MASK);
regmap_update_bits(max98925->regmap,
MAX98925_DOUT_CFG_VMON,
M98925_DAI_VMON_SLOT_MASK,
max98925->v_slot << M98925_DAI_VMON_SLOT_SHIFT);
/* set IMON slots */
regmap_update_bits(max98925->regmap,
MAX98925_DOUT_CFG_IMON,
M98925_DAI_IMON_EN_MASK, M98925_DAI_IMON_EN_MASK);
regmap_update_bits(max98925->regmap,
MAX98925_DOUT_CFG_IMON,
M98925_DAI_IMON_SLOT_MASK,
max98925->i_slot << M98925_DAI_IMON_SLOT_SHIFT);
}
static int max98925_dai_set_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
unsigned int invert = 0;
dev_dbg(codec->dev, "%s: fmt 0x%08X\n", __func__, fmt);
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
/* set DAI to slave mode */
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE2,
M98925_DAI_MAS_MASK, 0);
max98925_set_sense_data(max98925);
break;
case SND_SOC_DAIFMT_CBM_CFM:
/*
* set left channel DAI to master mode,
* right channel always slave
*/
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE2,
M98925_DAI_MAS_MASK, M98925_DAI_MAS_MASK);
break;
case SND_SOC_DAIFMT_CBS_CFM:
case SND_SOC_DAIFMT_CBM_CFS:
default:
dev_err(codec->dev, "DAI clock mode unsupported");
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_NB_IF:
invert = M98925_DAI_WCI_MASK;
break;
case SND_SOC_DAIFMT_IB_NF:
invert = M98925_DAI_BCI_MASK;
break;
case SND_SOC_DAIFMT_IB_IF:
invert = M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK;
break;
default:
dev_err(codec->dev, "DAI invert mode unsupported");
return -EINVAL;
}
regmap_update_bits(max98925->regmap, MAX98925_FORMAT,
M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK, invert);
return 0;
}
static int max98925_set_clock(struct max98925_priv *max98925,
struct snd_pcm_hw_params *params)
{
unsigned int dai_sr = 0, clock, mdll, n, m;
struct snd_soc_codec *codec = max98925->codec;
int rate = params_rate(params);
/* BCLK/LRCLK ratio calculation */
int blr_clk_ratio = params_channels(params) * max98925->ch_size;
switch (blr_clk_ratio) {
case 32:
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE2,
M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_32);
break;
case 48:
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE2,
M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_48);
break;
case 64:
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE2,
M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_64);
break;
default:
return -EINVAL;
}
switch (max98925->sysclk) {
case 6000000:
clock = 0;
mdll = M98925_MDLL_MULT_MCLKx16;
break;
case 11289600:
clock = 1;
mdll = M98925_MDLL_MULT_MCLKx8;
break;
case 12000000:
clock = 0;
mdll = M98925_MDLL_MULT_MCLKx8;
break;
case 12288000:
clock = 2;
mdll = M98925_MDLL_MULT_MCLKx8;
break;
default:
dev_info(max98925->codec->dev, "unsupported sysclk %d\n",
max98925->sysclk);
return -EINVAL;
}
if (max98925_rate_value(codec, rate, clock, &dai_sr, &n, &m))
return -EINVAL;
/* set DAI_SR to correct LRCLK frequency */
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE2,
M98925_DAI_SR_MASK, dai_sr << M98925_DAI_SR_SHIFT);
/* set DAI m divider */
regmap_write(max98925->regmap,
MAX98925_DAI_CLK_DIV_M_MSBS, m >> 8);
regmap_write(max98925->regmap,
MAX98925_DAI_CLK_DIV_M_LSBS, m & 0xFF);
/* set DAI n divider */
regmap_write(max98925->regmap,
MAX98925_DAI_CLK_DIV_N_MSBS, n >> 8);
regmap_write(max98925->regmap,
MAX98925_DAI_CLK_DIV_N_LSBS, n & 0xFF);
/* set MDLL */
regmap_update_bits(max98925->regmap, MAX98925_DAI_CLK_MODE1,
M98925_MDLL_MULT_MASK, mdll << M98925_MDLL_MULT_SHIFT);
return 0;
}
static int max98925_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
switch (params_width(params)) {
case 16:
regmap_update_bits(max98925->regmap,
MAX98925_FORMAT,
M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_16);
max98925->ch_size = 16;
break;
case 24:
regmap_update_bits(max98925->regmap,
MAX98925_FORMAT,
M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_24);
max98925->ch_size = 24;
break;
case 32:
regmap_update_bits(max98925->regmap,
MAX98925_FORMAT,
M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_32);
max98925->ch_size = 32;
break;
default:
pr_err("%s: format unsupported %d",
__func__, params_format(params));
return -EINVAL;
}
dev_dbg(codec->dev, "%s: format supported %d",
__func__, params_format(params));
return max98925_set_clock(max98925, params);
}
static int max98925_dai_set_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = dai->codec;
struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
switch (clk_id) {
case 0:
/* use MCLK for Left channel, right channel always BCLK */
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE1,
M98925_DAI_CLK_SOURCE_MASK, 0);
break;
case 1:
/* configure dai clock source to BCLK instead of MCLK */
regmap_update_bits(max98925->regmap,
MAX98925_DAI_CLK_MODE1,
M98925_DAI_CLK_SOURCE_MASK,
M98925_DAI_CLK_SOURCE_MASK);
break;
default:
return -EINVAL;
}
max98925->sysclk = freq;
return 0;
}
#define MAX98925_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static const struct snd_soc_dai_ops max98925_dai_ops = {
.set_sysclk = max98925_dai_set_sysclk,
.set_fmt = max98925_dai_set_fmt,
.hw_params = max98925_dai_hw_params,
};
static struct snd_soc_dai_driver max98925_dai[] = {
{
.name = "max98925-aif1",
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = MAX98925_FORMATS,
},
.capture = {
.stream_name = "HiFi Capture",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = MAX98925_FORMATS,
},
.ops = &max98925_dai_ops,
}
};
static int max98925_probe(struct snd_soc_codec *codec)
{
struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
max98925->codec = codec;
regmap_write(max98925->regmap, MAX98925_GLOBAL_ENABLE, 0x00);
/* It's not the default but we need to set DAI_DLY */
regmap_write(max98925->regmap,
MAX98925_FORMAT, M98925_DAI_DLY_MASK);
regmap_write(max98925->regmap, MAX98925_TDM_SLOT_SELECT, 0xC8);
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG1, 0xFF);
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG2, 0xFF);
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG3, 0xFF);
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG4, 0xF0);
regmap_write(max98925->regmap, MAX98925_FILTERS, 0xD8);
regmap_write(max98925->regmap, MAX98925_ALC_CONFIGURATION, 0xF8);
regmap_write(max98925->regmap, MAX98925_CONFIGURATION, 0xF0);
/* Disable ALC muting */
regmap_write(max98925->regmap, MAX98925_BOOST_LIMITER, 0xF8);
return 0;
}
static const struct snd_soc_codec_driver soc_codec_dev_max98925 = {
.probe = max98925_probe,
.component_driver = {
.controls = max98925_snd_controls,
.num_controls = ARRAY_SIZE(max98925_snd_controls),
.dapm_routes = max98925_audio_map,
.num_dapm_routes = ARRAY_SIZE(max98925_audio_map),
.dapm_widgets = max98925_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(max98925_dapm_widgets),
},
};
static const struct regmap_config max98925_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = MAX98925_REV_VERSION,
.reg_defaults = max98925_reg,
.num_reg_defaults = ARRAY_SIZE(max98925_reg),
.volatile_reg = max98925_volatile_register,
.readable_reg = max98925_readable_register,
.cache_type = REGCACHE_RBTREE,
};
static int max98925_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
int ret, reg;
u32 value;
struct max98925_priv *max98925;
max98925 = devm_kzalloc(&i2c->dev,
sizeof(*max98925), GFP_KERNEL);
if (!max98925)
return -ENOMEM;
i2c_set_clientdata(i2c, max98925);
max98925->regmap = devm_regmap_init_i2c(i2c, &max98925_regmap);
if (IS_ERR(max98925->regmap)) {
ret = PTR_ERR(max98925->regmap);
dev_err(&i2c->dev,
"Failed to allocate regmap: %d\n", ret);
goto err_out;
}
if (!of_property_read_u32(i2c->dev.of_node, "vmon-slot-no", &value)) {
if (value > M98925_DAI_VMON_SLOT_1E_1F) {
dev_err(&i2c->dev, "vmon slot number is wrong:\n");
return -EINVAL;
}
max98925->v_slot = value;
}
if (!of_property_read_u32(i2c->dev.of_node, "imon-slot-no", &value)) {
if (value > M98925_DAI_IMON_SLOT_1E_1F) {
dev_err(&i2c->dev, "imon slot number is wrong:\n");
return -EINVAL;
}
max98925->i_slot = value;
}
ret = regmap_read(max98925->regmap,
MAX98925_REV_VERSION, &reg);
if ((ret < 0) ||
((reg != MAX98925_VERSION) &&
(reg != MAX98925_VERSION1))) {
dev_err(&i2c->dev,
"device initialization error (%d 0x%02X)\n",
ret, reg);
goto err_out;
}
dev_info(&i2c->dev, "device version 0x%02X\n", reg);
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_max98925,
max98925_dai, ARRAY_SIZE(max98925_dai));
if (ret < 0)
dev_err(&i2c->dev,
"Failed to register codec: %d\n", ret);
err_out:
return ret;
}
static int max98925_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id max98925_i2c_id[] = {
{ "max98925", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max98925_i2c_id);
static const struct of_device_id max98925_of_match[] = {
{ .compatible = "maxim,max98925", },
{ }
};
MODULE_DEVICE_TABLE(of, max98925_of_match);
static struct i2c_driver max98925_i2c_driver = {
.driver = {
.name = "max98925",
.of_match_table = of_match_ptr(max98925_of_match),
.pm = NULL,
},
.probe = max98925_i2c_probe,
.remove = max98925_i2c_remove,
.id_table = max98925_i2c_id,
};
module_i2c_driver(max98925_i2c_driver)
MODULE_DESCRIPTION("ALSA SoC MAX98925 driver");
MODULE_AUTHOR("Ralph Birt <rdbirt@gmail.com>, Anish kumar <anish.kumar@maximintegrated.com>");
MODULE_LICENSE("GPL");
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