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linux-sg2042/sound/soc/codecs/jz4725b.c

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// SPDX-License-Identifier: GPL-2.0
//
// JZ4725B CODEC driver
//
// Copyright (C) 2019, Paul Cercueil <paul@crapouillou.net>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/regmap.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#define ICDC_RGADW_OFFSET 0x00
#define ICDC_RGDATA_OFFSET 0x04
/* ICDC internal register access control register(RGADW) */
#define ICDC_RGADW_RGWR BIT(16)
#define ICDC_RGADW_RGADDR_OFFSET 8
#define ICDC_RGADW_RGADDR_MASK GENMASK(14, ICDC_RGADW_RGADDR_OFFSET)
#define ICDC_RGADW_RGDIN_OFFSET 0
#define ICDC_RGADW_RGDIN_MASK GENMASK(7, ICDC_RGADW_RGDIN_OFFSET)
/* ICDC internal register data output register (RGDATA)*/
#define ICDC_RGDATA_IRQ BIT(8)
#define ICDC_RGDATA_RGDOUT_OFFSET 0
#define ICDC_RGDATA_RGDOUT_MASK GENMASK(7, ICDC_RGDATA_RGDOUT_OFFSET)
/* JZ internal register space */
enum {
JZ4725B_CODEC_REG_AICR,
JZ4725B_CODEC_REG_CR1,
JZ4725B_CODEC_REG_CR2,
JZ4725B_CODEC_REG_CCR1,
JZ4725B_CODEC_REG_CCR2,
JZ4725B_CODEC_REG_PMR1,
JZ4725B_CODEC_REG_PMR2,
JZ4725B_CODEC_REG_CRR,
JZ4725B_CODEC_REG_ICR,
JZ4725B_CODEC_REG_IFR,
JZ4725B_CODEC_REG_CGR1,
JZ4725B_CODEC_REG_CGR2,
JZ4725B_CODEC_REG_CGR3,
JZ4725B_CODEC_REG_CGR4,
JZ4725B_CODEC_REG_CGR5,
JZ4725B_CODEC_REG_CGR6,
JZ4725B_CODEC_REG_CGR7,
JZ4725B_CODEC_REG_CGR8,
JZ4725B_CODEC_REG_CGR9,
JZ4725B_CODEC_REG_CGR10,
JZ4725B_CODEC_REG_TR1,
JZ4725B_CODEC_REG_TR2,
JZ4725B_CODEC_REG_CR3,
JZ4725B_CODEC_REG_AGC1,
JZ4725B_CODEC_REG_AGC2,
JZ4725B_CODEC_REG_AGC3,
JZ4725B_CODEC_REG_AGC4,
JZ4725B_CODEC_REG_AGC5,
};
#define REG_AICR_CONFIG1_OFFSET 0
#define REG_AICR_CONFIG1_MASK (0xf << REG_AICR_CONFIG1_OFFSET)
#define REG_CR1_SB_MICBIAS_OFFSET 7
#define REG_CR1_MONO_OFFSET 6
#define REG_CR1_DAC_MUTE_OFFSET 5
#define REG_CR1_HP_DIS_OFFSET 4
#define REG_CR1_DACSEL_OFFSET 3
#define REG_CR1_BYPASS_OFFSET 2
#define REG_CR2_DAC_DEEMP_OFFSET 7
#define REG_CR2_DAC_ADWL_OFFSET 5
#define REG_CR2_DAC_ADWL_MASK (0x3 << REG_CR2_DAC_ADWL_OFFSET)
#define REG_CR2_ADC_ADWL_OFFSET 3
#define REG_CR2_ADC_ADWL_MASK (0x3 << REG_CR2_ADC_ADWL_OFFSET)
#define REG_CR2_ADC_HPF_OFFSET 2
#define REG_CR3_SB_MIC1_OFFSET 7
#define REG_CR3_SB_MIC2_OFFSET 6
#define REG_CR3_SIDETONE1_OFFSET 5
#define REG_CR3_SIDETONE2_OFFSET 4
#define REG_CR3_MICDIFF_OFFSET 3
#define REG_CR3_MICSTEREO_OFFSET 2
#define REG_CR3_INSEL_OFFSET 0
#define REG_CR3_INSEL_MASK (0x3 << REG_CR3_INSEL_OFFSET)
#define REG_CCR1_CONFIG4_OFFSET 0
#define REG_CCR1_CONFIG4_MASK (0xf << REG_CCR1_CONFIG4_OFFSET)
#define REG_CCR2_DFREQ_OFFSET 4
#define REG_CCR2_DFREQ_MASK (0xf << REG_CCR2_DFREQ_OFFSET)
#define REG_CCR2_AFREQ_OFFSET 0
#define REG_CCR2_AFREQ_MASK (0xf << REG_CCR2_AFREQ_OFFSET)
#define REG_PMR1_SB_DAC_OFFSET 7
#define REG_PMR1_SB_OUT_OFFSET 6
#define REG_PMR1_SB_MIX_OFFSET 5
#define REG_PMR1_SB_ADC_OFFSET 4
#define REG_PMR1_SB_LIN_OFFSET 3
#define REG_PMR1_SB_IND_OFFSET 0
#define REG_PMR2_LRGI_OFFSET 7
#define REG_PMR2_RLGI_OFFSET 6
#define REG_PMR2_LRGOD_OFFSET 5
#define REG_PMR2_RLGOD_OFFSET 4
#define REG_PMR2_GIM_OFFSET 3
#define REG_PMR2_SB_MC_OFFSET 2
#define REG_PMR2_SB_OFFSET 1
#define REG_PMR2_SB_SLEEP_OFFSET 0
#define REG_IFR_RAMP_UP_DONE_OFFSET 3
#define REG_IFR_RAMP_DOWN_DONE_OFFSET 2
#define REG_CGR1_GODL_OFFSET 4
#define REG_CGR1_GODL_MASK (0xf << REG_CGR1_GODL_OFFSET)
#define REG_CGR1_GODR_OFFSET 0
#define REG_CGR1_GODR_MASK (0xf << REG_CGR1_GODR_OFFSET)
#define REG_CGR2_GO1R_OFFSET 0
#define REG_CGR2_GO1R_MASK (0x1f << REG_CGR2_GO1R_OFFSET)
#define REG_CGR3_GO1L_OFFSET 0
#define REG_CGR3_GO1L_MASK (0x1f << REG_CGR3_GO1L_OFFSET)
struct jz_icdc {
struct regmap *regmap;
void __iomem *base;
struct clk *clk;
};
static const SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(jz4725b_dac_tlv, -2250, 0);
static const SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(jz4725b_line_tlv, -1500, 600);
static const struct snd_kcontrol_new jz4725b_codec_controls[] = {
SOC_DOUBLE_TLV("Master Playback Volume",
JZ4725B_CODEC_REG_CGR1,
REG_CGR1_GODL_OFFSET,
REG_CGR1_GODR_OFFSET,
0xf, 1, jz4725b_dac_tlv),
SOC_DOUBLE_R_TLV("Master Capture Volume",
JZ4725B_CODEC_REG_CGR3,
JZ4725B_CODEC_REG_CGR2,
REG_CGR2_GO1R_OFFSET,
0x1f, 1, jz4725b_line_tlv),
SOC_SINGLE("Master Playback Switch", JZ4725B_CODEC_REG_CR1,
REG_CR1_DAC_MUTE_OFFSET, 1, 1),
SOC_SINGLE("Deemphasize Filter Playback Switch",
JZ4725B_CODEC_REG_CR2,
REG_CR2_DAC_DEEMP_OFFSET, 1, 0),
SOC_SINGLE("High-Pass Filter Capture Switch",
JZ4725B_CODEC_REG_CR2,
REG_CR2_ADC_HPF_OFFSET, 1, 0),
};
static const char * const jz4725b_codec_adc_src_texts[] = {
"Mic 1", "Mic 2", "Line In", "Mixer",
};
static const unsigned int jz4725b_codec_adc_src_values[] = { 0, 1, 2, 3, };
static SOC_VALUE_ENUM_SINGLE_DECL(jz4725b_codec_adc_src_enum,
JZ4725B_CODEC_REG_CR3,
REG_CR3_INSEL_OFFSET,
REG_CR3_INSEL_MASK,
jz4725b_codec_adc_src_texts,
jz4725b_codec_adc_src_values);
static const struct snd_kcontrol_new jz4725b_codec_adc_src_ctrl =
SOC_DAPM_ENUM("Route", jz4725b_codec_adc_src_enum);
static const struct snd_kcontrol_new jz4725b_codec_mixer_controls[] = {
SOC_DAPM_SINGLE("Line In Bypass", JZ4725B_CODEC_REG_CR1,
REG_CR1_BYPASS_OFFSET, 1, 0),
};
static int jz4725b_out_stage_enable(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event)
{
struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
struct jz_icdc *icdc = snd_soc_component_get_drvdata(codec);
struct regmap *map = icdc->regmap;
unsigned int val;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
return regmap_update_bits(map, JZ4725B_CODEC_REG_IFR,
BIT(REG_IFR_RAMP_UP_DONE_OFFSET), 0);
case SND_SOC_DAPM_POST_PMU:
return regmap_read_poll_timeout(map, JZ4725B_CODEC_REG_IFR,
val, val & BIT(REG_IFR_RAMP_UP_DONE_OFFSET),
100000, 500000);
case SND_SOC_DAPM_PRE_PMD:
return regmap_update_bits(map, JZ4725B_CODEC_REG_IFR,
BIT(REG_IFR_RAMP_DOWN_DONE_OFFSET), 0);
case SND_SOC_DAPM_POST_PMD:
return regmap_read_poll_timeout(map, JZ4725B_CODEC_REG_IFR,
val, val & BIT(REG_IFR_RAMP_DOWN_DONE_OFFSET),
100000, 500000);
default:
return -EINVAL;
}
}
static const struct snd_soc_dapm_widget jz4725b_codec_dapm_widgets[] = {
/* DAC */
SND_SOC_DAPM_DAC("DAC", "Playback",
JZ4725B_CODEC_REG_PMR1, REG_PMR1_SB_DAC_OFFSET, 1),
/* ADC */
SND_SOC_DAPM_ADC("ADC", "Capture",
JZ4725B_CODEC_REG_PMR1, REG_PMR1_SB_ADC_OFFSET, 1),
SND_SOC_DAPM_MUX("ADC Source", SND_SOC_NOPM, 0, 0,
&jz4725b_codec_adc_src_ctrl),
/* Mixer */
SND_SOC_DAPM_MIXER("Mixer", JZ4725B_CODEC_REG_PMR1,
REG_PMR1_SB_MIX_OFFSET, 1,
jz4725b_codec_mixer_controls,
ARRAY_SIZE(jz4725b_codec_mixer_controls)),
SND_SOC_DAPM_MIXER("DAC to Mixer", JZ4725B_CODEC_REG_CR1,
REG_CR1_DACSEL_OFFSET, 0, NULL, 0),
SND_SOC_DAPM_MIXER("Line In", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_MIXER("HP Out", JZ4725B_CODEC_REG_CR1,
REG_CR1_HP_DIS_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_MIXER("Mic 1", JZ4725B_CODEC_REG_CR3,
REG_CR3_SB_MIC1_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_MIXER("Mic 2", JZ4725B_CODEC_REG_CR3,
REG_CR3_SB_MIC2_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_MIXER_E("Out Stage", JZ4725B_CODEC_REG_PMR1,
REG_PMR1_SB_OUT_OFFSET, 1, NULL, 0,
jz4725b_out_stage_enable,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_MIXER("Mixer to ADC", JZ4725B_CODEC_REG_PMR1,
REG_PMR1_SB_IND_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("Mic Bias", JZ4725B_CODEC_REG_CR1,
REG_CR1_SB_MICBIAS_OFFSET, 1, NULL, 0),
/* Pins */
SND_SOC_DAPM_INPUT("MIC1P"),
SND_SOC_DAPM_INPUT("MIC1N"),
SND_SOC_DAPM_INPUT("MIC2P"),
SND_SOC_DAPM_INPUT("MIC2N"),
SND_SOC_DAPM_INPUT("LLINEIN"),
SND_SOC_DAPM_INPUT("RLINEIN"),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
};
static const struct snd_soc_dapm_route jz4725b_codec_dapm_routes[] = {
{"Mic 1", NULL, "MIC1P"},
{"Mic 1", NULL, "MIC1N"},
{"Mic 2", NULL, "MIC2P"},
{"Mic 2", NULL, "MIC2N"},
{"Line In", NULL, "LLINEIN"},
{"Line In", NULL, "RLINEIN"},
{"Mixer", "Line In Bypass", "Line In"},
{"DAC to Mixer", NULL, "DAC"},
{"Mixer", NULL, "DAC to Mixer"},
{"Mixer to ADC", NULL, "Mixer"},
{"ADC Source", "Mixer", "Mixer to ADC"},
{"ADC Source", "Line In", "Line In"},
{"ADC Source", "Mic 1", "Mic 1"},
{"ADC Source", "Mic 2", "Mic 2"},
{"ADC", NULL, "ADC Source"},
{"Out Stage", NULL, "Mixer"},
{"HP Out", NULL, "Out Stage"},
{"LHPOUT", NULL, "HP Out"},
{"RHPOUT", NULL, "HP Out"},
};
static int jz4725b_codec_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
struct jz_icdc *icdc = snd_soc_component_get_drvdata(component);
struct regmap *map = icdc->regmap;
switch (level) {
case SND_SOC_BIAS_ON:
regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
BIT(REG_PMR2_SB_SLEEP_OFFSET), 0);
break;
case SND_SOC_BIAS_PREPARE:
/* Enable sound hardware */
regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
BIT(REG_PMR2_SB_OFFSET), 0);
msleep(224);
break;
case SND_SOC_BIAS_STANDBY:
regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
BIT(REG_PMR2_SB_SLEEP_OFFSET),
BIT(REG_PMR2_SB_SLEEP_OFFSET));
break;
case SND_SOC_BIAS_OFF:
regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
BIT(REG_PMR2_SB_OFFSET),
BIT(REG_PMR2_SB_OFFSET));
break;
}
return 0;
}
static int jz4725b_codec_dev_probe(struct snd_soc_component *component)
{
struct jz_icdc *icdc = snd_soc_component_get_drvdata(component);
struct regmap *map = icdc->regmap;
clk_prepare_enable(icdc->clk);
/* Write CONFIGn (n=1 to 8) bits.
* The value 0x0f is specified in the datasheet as a requirement.
*/
regmap_write(map, JZ4725B_CODEC_REG_AICR,
0xf << REG_AICR_CONFIG1_OFFSET);
regmap_write(map, JZ4725B_CODEC_REG_CCR1,
0x0 << REG_CCR1_CONFIG4_OFFSET);
return 0;
}
static void jz4725b_codec_dev_remove(struct snd_soc_component *component)
{
struct jz_icdc *icdc = snd_soc_component_get_drvdata(component);
clk_disable_unprepare(icdc->clk);
}
static const struct snd_soc_component_driver jz4725b_codec = {
.probe = jz4725b_codec_dev_probe,
.remove = jz4725b_codec_dev_remove,
.set_bias_level = jz4725b_codec_set_bias_level,
.controls = jz4725b_codec_controls,
.num_controls = ARRAY_SIZE(jz4725b_codec_controls),
.dapm_widgets = jz4725b_codec_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(jz4725b_codec_dapm_widgets),
.dapm_routes = jz4725b_codec_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(jz4725b_codec_dapm_routes),
.suspend_bias_off = 1,
.use_pmdown_time = 1,
};
static const unsigned int jz4725b_codec_sample_rates[] = {
96000, 48000, 44100, 32000,
24000, 22050, 16000, 12000,
11025, 9600, 8000,
};
static int jz4725b_codec_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
struct jz_icdc *icdc = snd_soc_component_get_drvdata(dai->component);
unsigned int rate, bit_width;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
bit_width = 0;
break;
case SNDRV_PCM_FORMAT_S18_3LE:
bit_width = 1;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
bit_width = 2;
break;
case SNDRV_PCM_FORMAT_S24_3LE:
bit_width = 3;
break;
default:
return -EINVAL;
}
for (rate = 0; rate < ARRAY_SIZE(jz4725b_codec_sample_rates); rate++) {
if (jz4725b_codec_sample_rates[rate] == params_rate(params))
break;
}
if (rate == ARRAY_SIZE(jz4725b_codec_sample_rates))
return -EINVAL;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
regmap_update_bits(icdc->regmap,
JZ4725B_CODEC_REG_CR2,
REG_CR2_DAC_ADWL_MASK,
bit_width << REG_CR2_DAC_ADWL_OFFSET);
regmap_update_bits(icdc->regmap,
JZ4725B_CODEC_REG_CCR2,
REG_CCR2_DFREQ_MASK,
rate << REG_CCR2_DFREQ_OFFSET);
} else {
regmap_update_bits(icdc->regmap,
JZ4725B_CODEC_REG_CR2,
REG_CR2_ADC_ADWL_MASK,
bit_width << REG_CR2_ADC_ADWL_OFFSET);
regmap_update_bits(icdc->regmap,
JZ4725B_CODEC_REG_CCR2,
REG_CCR2_AFREQ_MASK,
rate << REG_CCR2_AFREQ_OFFSET);
}
return 0;
}
static const struct snd_soc_dai_ops jz4725b_codec_dai_ops = {
.hw_params = jz4725b_codec_hw_params,
};
#define JZ_ICDC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | \
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_3LE)
static struct snd_soc_dai_driver jz4725b_codec_dai = {
.name = "jz4725b-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = JZ_ICDC_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = JZ_ICDC_FORMATS,
},
.ops = &jz4725b_codec_dai_ops,
};
static bool jz4725b_codec_volatile(struct device *dev, unsigned int reg)
{
return reg == JZ4725B_CODEC_REG_IFR;
}
static bool jz4725b_codec_can_access_reg(struct device *dev, unsigned int reg)
{
return (reg != JZ4725B_CODEC_REG_TR1) && (reg != JZ4725B_CODEC_REG_TR2);
}
static int jz4725b_codec_io_wait(struct jz_icdc *icdc)
{
u32 reg;
return readl_poll_timeout(icdc->base + ICDC_RGADW_OFFSET, reg,
!(reg & ICDC_RGADW_RGWR), 1000, 10000);
}
static int jz4725b_codec_reg_read(void *context, unsigned int reg,
unsigned int *val)
{
struct jz_icdc *icdc = context;
unsigned int i;
u32 tmp;
int ret;
ret = jz4725b_codec_io_wait(icdc);
if (ret)
return ret;
tmp = readl(icdc->base + ICDC_RGADW_OFFSET);
tmp = (tmp & ~ICDC_RGADW_RGADDR_MASK)
| (reg << ICDC_RGADW_RGADDR_OFFSET);
writel(tmp, icdc->base + ICDC_RGADW_OFFSET);
/* wait 6+ cycles */
for (i = 0; i < 6; i++)
*val = readl(icdc->base + ICDC_RGDATA_OFFSET) &
ICDC_RGDATA_RGDOUT_MASK;
return 0;
}
static int jz4725b_codec_reg_write(void *context, unsigned int reg,
unsigned int val)
{
struct jz_icdc *icdc = context;
int ret;
ret = jz4725b_codec_io_wait(icdc);
if (ret)
return ret;
writel(ICDC_RGADW_RGWR | (reg << ICDC_RGADW_RGADDR_OFFSET) | val,
icdc->base + ICDC_RGADW_OFFSET);
ret = jz4725b_codec_io_wait(icdc);
if (ret)
return ret;
return 0;
}
static const u8 jz4725b_codec_reg_defaults[] = {
0x0c, 0xaa, 0x78, 0x00, 0x00, 0xff, 0x03, 0x51,
0x3f, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x0a, 0x0a, 0x00, 0x00, 0x00, 0xc0, 0x34,
0x07, 0x44, 0x1f, 0x00,
};
static const struct regmap_config jz4725b_codec_regmap_config = {
.reg_bits = 7,
.val_bits = 8,
.max_register = JZ4725B_CODEC_REG_AGC5,
.volatile_reg = jz4725b_codec_volatile,
.readable_reg = jz4725b_codec_can_access_reg,
.writeable_reg = jz4725b_codec_can_access_reg,
.reg_read = jz4725b_codec_reg_read,
.reg_write = jz4725b_codec_reg_write,
.reg_defaults_raw = jz4725b_codec_reg_defaults,
.num_reg_defaults_raw = ARRAY_SIZE(jz4725b_codec_reg_defaults),
.cache_type = REGCACHE_FLAT,
};
static int jz4725b_codec_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct jz_icdc *icdc;
struct resource *mem;
int ret;
icdc = devm_kzalloc(dev, sizeof(*icdc), GFP_KERNEL);
if (!icdc)
return -ENOMEM;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
icdc->base = devm_ioremap_resource(dev, mem);
if (IS_ERR(icdc->base))
return PTR_ERR(icdc->base);
icdc->regmap = devm_regmap_init(dev, NULL, icdc,
&jz4725b_codec_regmap_config);
if (IS_ERR(icdc->regmap))
return PTR_ERR(icdc->regmap);
icdc->clk = devm_clk_get(&pdev->dev, "aic");
if (IS_ERR(icdc->clk))
return PTR_ERR(icdc->clk);
platform_set_drvdata(pdev, icdc);
ret = devm_snd_soc_register_component(dev, &jz4725b_codec,
&jz4725b_codec_dai, 1);
if (ret)
dev_err(dev, "Failed to register codec\n");
return ret;
}
#ifdef CONFIG_OF
static const struct of_device_id jz4725b_codec_of_matches[] = {
{ .compatible = "ingenic,jz4725b-codec", },
{ }
};
MODULE_DEVICE_TABLE(of, jz4725b_codec_of_matches);
#endif
static struct platform_driver jz4725b_codec_driver = {
.probe = jz4725b_codec_probe,
.driver = {
.name = "jz4725b-codec",
.of_match_table = of_match_ptr(jz4725b_codec_of_matches),
},
};
module_platform_driver(jz4725b_codec_driver);
MODULE_DESCRIPTION("JZ4725B SoC internal codec driver");
MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
MODULE_LICENSE("GPL v2");
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