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linux/sound/soc/codecs/rt298.c
Uwe Kleine-König ba2a2c378a
ASoC: codecs: Drop explicit initialization of struct i2c_device_id::driver_data to 0 
These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20240502074722.1103986-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-05-03 11:08:06 +09:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* rt298.c -- RT298 ALSA SoC audio codec driver
*
* Copyright 2015 Realtek Semiconductor Corp.
* Author: Bard Liao <bardliao@realtek.com>
*/
#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/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/dmi.h>
#include <linux/acpi.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/initval.h>
#include <sound/tlv.h>
#include <sound/jack.h>
#include <linux/workqueue.h>
#include <sound/rt298.h>
#include "rl6347a.h"
#include "rt298.h"
#define RT298_VENDOR_ID 0x10ec0298
struct rt298_priv {
struct reg_default *index_cache;
int index_cache_size;
struct regmap *regmap;
struct snd_soc_component *component;
struct rt298_platform_data pdata;
struct i2c_client *i2c;
struct snd_soc_jack *jack;
struct delayed_work jack_detect_work;
int sys_clk;
int clk_id;
int is_hp_in;
};
static const struct reg_default rt298_index_def[] = {
{ 0x01, 0xa5a8 },
{ 0x02, 0x8e95 },
{ 0x03, 0x0002 },
{ 0x04, 0xaf67 },
{ 0x08, 0x200f },
{ 0x09, 0xd010 },
{ 0x0a, 0x0100 },
{ 0x0b, 0x0000 },
{ 0x0d, 0x2800 },
{ 0x0f, 0x0022 },
{ 0x19, 0x0217 },
{ 0x20, 0x0020 },
{ 0x33, 0x0208 },
{ 0x46, 0x0300 },
{ 0x49, 0x4004 },
{ 0x4f, 0x50c9 },
{ 0x50, 0x3000 },
{ 0x63, 0x1b02 },
{ 0x67, 0x1111 },
{ 0x68, 0x1016 },
{ 0x69, 0x273f },
};
#define INDEX_CACHE_SIZE ARRAY_SIZE(rt298_index_def)
static const struct reg_default rt298_reg[] = {
{ 0x00170500, 0x00000400 },
{ 0x00220000, 0x00000031 },
{ 0x00239000, 0x0000007f },
{ 0x0023a000, 0x0000007f },
{ 0x00270500, 0x00000400 },
{ 0x00370500, 0x00000400 },
{ 0x00870500, 0x00000400 },
{ 0x00920000, 0x00000031 },
{ 0x00935000, 0x000000c3 },
{ 0x00936000, 0x000000c3 },
{ 0x00970500, 0x00000400 },
{ 0x00b37000, 0x00000097 },
{ 0x00b37200, 0x00000097 },
{ 0x00b37300, 0x00000097 },
{ 0x00c37000, 0x00000000 },
{ 0x00c37100, 0x00000080 },
{ 0x01270500, 0x00000400 },
{ 0x01370500, 0x00000400 },
{ 0x01371f00, 0x411111f0 },
{ 0x01439000, 0x00000080 },
{ 0x0143a000, 0x00000080 },
{ 0x01470700, 0x00000000 },
{ 0x01470500, 0x00000400 },
{ 0x01470c00, 0x00000000 },
{ 0x01470100, 0x00000000 },
{ 0x01837000, 0x00000000 },
{ 0x01870500, 0x00000400 },
{ 0x02050000, 0x00000000 },
{ 0x02139000, 0x00000080 },
{ 0x0213a000, 0x00000080 },
{ 0x02170100, 0x00000000 },
{ 0x02170500, 0x00000400 },
{ 0x02170700, 0x00000000 },
{ 0x02270100, 0x00000000 },
{ 0x02370100, 0x00000000 },
{ 0x01870700, 0x00000020 },
{ 0x00830000, 0x000000c3 },
{ 0x00930000, 0x000000c3 },
{ 0x01270700, 0x00000000 },
};
static bool rt298_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0 ... 0xff:
case RT298_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
case RT298_GET_HP_SENSE:
case RT298_GET_MIC1_SENSE:
case RT298_PROC_COEF:
case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_MIC1, 0):
case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_SPK_OUT, 0):
case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_HP_OUT, 0):
return true;
default:
return false;
}
}
static bool rt298_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0 ... 0xff:
case RT298_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
case RT298_GET_HP_SENSE:
case RT298_GET_MIC1_SENSE:
case RT298_SET_AUDIO_POWER:
case RT298_SET_HPO_POWER:
case RT298_SET_SPK_POWER:
case RT298_SET_DMIC1_POWER:
case RT298_SPK_MUX:
case RT298_HPO_MUX:
case RT298_ADC0_MUX:
case RT298_ADC1_MUX:
case RT298_SET_MIC1:
case RT298_SET_PIN_HPO:
case RT298_SET_PIN_SPK:
case RT298_SET_PIN_DMIC1:
case RT298_SPK_EAPD:
case RT298_SET_AMP_GAIN_HPO:
case RT298_SET_DMIC2_DEFAULT:
case RT298_DACL_GAIN:
case RT298_DACR_GAIN:
case RT298_ADCL_GAIN:
case RT298_ADCR_GAIN:
case RT298_MIC_GAIN:
case RT298_SPOL_GAIN:
case RT298_SPOR_GAIN:
case RT298_HPOL_GAIN:
case RT298_HPOR_GAIN:
case RT298_F_DAC_SWITCH:
case RT298_F_RECMIX_SWITCH:
case RT298_REC_MIC_SWITCH:
case RT298_REC_I2S_SWITCH:
case RT298_REC_LINE_SWITCH:
case RT298_REC_BEEP_SWITCH:
case RT298_DAC_FORMAT:
case RT298_ADC_FORMAT:
case RT298_COEF_INDEX:
case RT298_PROC_COEF:
case RT298_SET_AMP_GAIN_ADC_IN1:
case RT298_SET_AMP_GAIN_ADC_IN2:
case RT298_SET_POWER(RT298_DAC_OUT1):
case RT298_SET_POWER(RT298_DAC_OUT2):
case RT298_SET_POWER(RT298_ADC_IN1):
case RT298_SET_POWER(RT298_ADC_IN2):
case RT298_SET_POWER(RT298_DMIC2):
case RT298_SET_POWER(RT298_MIC1):
case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_MIC1, 0):
case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_SPK_OUT, 0):
case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_HP_OUT, 0):
return true;
default:
return false;
}
}
#ifdef CONFIG_PM
static void rt298_index_sync(struct snd_soc_component *component)
{
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
int i;
for (i = 0; i < INDEX_CACHE_SIZE; i++) {
snd_soc_component_write(component, rt298->index_cache[i].reg,
rt298->index_cache[i].def);
}
}
#endif
static int rt298_support_power_controls[] = {
RT298_DAC_OUT1,
RT298_DAC_OUT2,
RT298_ADC_IN1,
RT298_ADC_IN2,
RT298_MIC1,
RT298_DMIC1,
RT298_DMIC2,
RT298_SPK_OUT,
RT298_HP_OUT,
};
#define RT298_POWER_REG_LEN ARRAY_SIZE(rt298_support_power_controls)
static int rt298_jack_detect(struct rt298_priv *rt298, bool *hp, bool *mic)
{
struct snd_soc_dapm_context *dapm;
unsigned int val, buf;
*hp = false;
*mic = false;
if (!rt298->component)
return -EINVAL;
dapm = snd_soc_component_get_dapm(rt298->component);
if (rt298->pdata.cbj_en) {
regmap_read(rt298->regmap, RT298_GET_HP_SENSE, &buf);
*hp = buf & 0x80000000;
if (*hp == rt298->is_hp_in)
return -1;
rt298->is_hp_in = *hp;
if (*hp) {
/* power on HV,VERF */
regmap_update_bits(rt298->regmap,
RT298_DC_GAIN, 0x200, 0x200);
snd_soc_dapm_force_enable_pin(dapm, "HV");
snd_soc_dapm_force_enable_pin(dapm, "VREF");
/* power LDO1 */
snd_soc_dapm_force_enable_pin(dapm, "LDO1");
snd_soc_dapm_sync(dapm);
regmap_update_bits(rt298->regmap,
RT298_POWER_CTRL1, 0x1001, 0);
regmap_update_bits(rt298->regmap,
RT298_POWER_CTRL2, 0x4, 0x4);
regmap_write(rt298->regmap, RT298_SET_MIC1, 0x24);
msleep(50);
regmap_update_bits(rt298->regmap,
RT298_CBJ_CTRL1, 0xfcc0, 0xd400);
msleep(300);
regmap_read(rt298->regmap, RT298_CBJ_CTRL2, &val);
if (0x0070 == (val & 0x0070)) {
*mic = true;
} else {
regmap_update_bits(rt298->regmap,
RT298_CBJ_CTRL1, 0xfcc0, 0xe400);
msleep(300);
regmap_read(rt298->regmap,
RT298_CBJ_CTRL2, &val);
if (0x0070 == (val & 0x0070)) {
*mic = true;
} else {
*mic = false;
regmap_update_bits(rt298->regmap,
RT298_CBJ_CTRL1,
0xfcc0, 0xc400);
}
}
regmap_update_bits(rt298->regmap,
RT298_DC_GAIN, 0x200, 0x0);
} else {
*mic = false;
regmap_write(rt298->regmap, RT298_SET_MIC1, 0x20);
regmap_update_bits(rt298->regmap,
RT298_CBJ_CTRL1, 0x0400, 0x0000);
}
} else {
regmap_read(rt298->regmap, RT298_GET_HP_SENSE, &buf);
*hp = buf & 0x80000000;
regmap_read(rt298->regmap, RT298_GET_MIC1_SENSE, &buf);
*mic = buf & 0x80000000;
}
if (!*mic) {
snd_soc_dapm_disable_pin(dapm, "HV");
snd_soc_dapm_disable_pin(dapm, "VREF");
}
if (!*hp)
snd_soc_dapm_disable_pin(dapm, "LDO1");
snd_soc_dapm_sync(dapm);
pr_debug("*hp = %d *mic = %d\n", *hp, *mic);
return 0;
}
static void rt298_jack_detect_work(struct work_struct *work)
{
struct rt298_priv *rt298 =
container_of(work, struct rt298_priv, jack_detect_work.work);
int status = 0;
bool hp = false;
bool mic = false;
if (rt298_jack_detect(rt298, &hp, &mic) < 0)
return;
if (hp)
status |= SND_JACK_HEADPHONE;
if (mic)
status |= SND_JACK_MICROPHONE;
snd_soc_jack_report(rt298->jack, status,
SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
}
static int rt298_mic_detect(struct snd_soc_component *component,
struct snd_soc_jack *jack, void *data)
{
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
rt298->jack = jack;
if (jack) {
/* Enable IRQ */
if (rt298->jack->status & SND_JACK_HEADPHONE)
snd_soc_dapm_force_enable_pin(dapm, "LDO1");
if (rt298->jack->status & SND_JACK_MICROPHONE) {
snd_soc_dapm_force_enable_pin(dapm, "HV");
snd_soc_dapm_force_enable_pin(dapm, "VREF");
}
regmap_update_bits(rt298->regmap, RT298_IRQ_CTRL, 0x2, 0x2);
/* Send an initial empty report */
snd_soc_jack_report(rt298->jack, rt298->jack->status,
SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
} else {
/* Disable IRQ */
regmap_update_bits(rt298->regmap, RT298_IRQ_CTRL, 0x2, 0x0);
snd_soc_dapm_disable_pin(dapm, "HV");
snd_soc_dapm_disable_pin(dapm, "VREF");
snd_soc_dapm_disable_pin(dapm, "LDO1");
}
snd_soc_dapm_sync(dapm);
return 0;
}
static int is_mclk_mode(struct snd_soc_dapm_widget *source,
struct snd_soc_dapm_widget *sink)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
if (rt298->clk_id == RT298_SCLK_S_MCLK)
return 1;
else
return 0;
}
static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -6350, 50, 0);
static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 1000, 0);
static const struct snd_kcontrol_new rt298_snd_controls[] = {
SOC_DOUBLE_R_TLV("DAC0 Playback Volume", RT298_DACL_GAIN,
RT298_DACR_GAIN, 0, 0x7f, 0, out_vol_tlv),
SOC_DOUBLE_R_TLV("ADC0 Capture Volume", RT298_ADCL_GAIN,
RT298_ADCR_GAIN, 0, 0x7f, 0, out_vol_tlv),
SOC_SINGLE_TLV("AMIC Volume", RT298_MIC_GAIN,
0, 0x3, 0, mic_vol_tlv),
SOC_DOUBLE_R("Speaker Playback Switch", RT298_SPOL_GAIN,
RT298_SPOR_GAIN, RT298_MUTE_SFT, 1, 1),
};
/* Digital Mixer */
static const struct snd_kcontrol_new rt298_front_mix[] = {
SOC_DAPM_SINGLE("DAC Switch", RT298_F_DAC_SWITCH,
RT298_MUTE_SFT, 1, 1),
SOC_DAPM_SINGLE("RECMIX Switch", RT298_F_RECMIX_SWITCH,
RT298_MUTE_SFT, 1, 1),
};
/* Analog Input Mixer */
static const struct snd_kcontrol_new rt298_rec_mix[] = {
SOC_DAPM_SINGLE("Mic1 Switch", RT298_REC_MIC_SWITCH,
RT298_MUTE_SFT, 1, 1),
SOC_DAPM_SINGLE("I2S Switch", RT298_REC_I2S_SWITCH,
RT298_MUTE_SFT, 1, 1),
SOC_DAPM_SINGLE("Line1 Switch", RT298_REC_LINE_SWITCH,
RT298_MUTE_SFT, 1, 1),
SOC_DAPM_SINGLE("Beep Switch", RT298_REC_BEEP_SWITCH,
RT298_MUTE_SFT, 1, 1),
};
static const struct snd_kcontrol_new spo_enable_control =
SOC_DAPM_SINGLE("Switch", RT298_SET_PIN_SPK,
RT298_SET_PIN_SFT, 1, 0);
static const struct snd_kcontrol_new hpol_enable_control =
SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT298_HPOL_GAIN,
RT298_MUTE_SFT, 1, 1);
static const struct snd_kcontrol_new hpor_enable_control =
SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT298_HPOR_GAIN,
RT298_MUTE_SFT, 1, 1);
/* ADC0 source */
static const char * const rt298_adc_src[] = {
"Mic", "RECMIX", "Dmic"
};
static const int rt298_adc_values[] = {
0, 4, 5,
};
static SOC_VALUE_ENUM_SINGLE_DECL(
rt298_adc0_enum, RT298_ADC0_MUX, RT298_ADC_SEL_SFT,
RT298_ADC_SEL_MASK, rt298_adc_src, rt298_adc_values);
static const struct snd_kcontrol_new rt298_adc0_mux =
SOC_DAPM_ENUM("ADC 0 source", rt298_adc0_enum);
static SOC_VALUE_ENUM_SINGLE_DECL(
rt298_adc1_enum, RT298_ADC1_MUX, RT298_ADC_SEL_SFT,
RT298_ADC_SEL_MASK, rt298_adc_src, rt298_adc_values);
static const struct snd_kcontrol_new rt298_adc1_mux =
SOC_DAPM_ENUM("ADC 1 source", rt298_adc1_enum);
static const char * const rt298_dac_src[] = {
"Front", "Surround"
};
/* HP-OUT source */
static SOC_ENUM_SINGLE_DECL(rt298_hpo_enum, RT298_HPO_MUX,
0, rt298_dac_src);
static const struct snd_kcontrol_new rt298_hpo_mux =
SOC_DAPM_ENUM("HPO source", rt298_hpo_enum);
/* SPK-OUT source */
static SOC_ENUM_SINGLE_DECL(rt298_spo_enum, RT298_SPK_MUX,
0, rt298_dac_src);
static const struct snd_kcontrol_new rt298_spo_mux =
SOC_DAPM_ENUM("SPO source", rt298_spo_enum);
static int rt298_spk_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
snd_soc_component_write(component,
RT298_SPK_EAPD, RT298_SET_EAPD_HIGH);
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_component_write(component,
RT298_SPK_EAPD, RT298_SET_EAPD_LOW);
break;
default:
return 0;
}
return 0;
}
static int rt298_set_dmic1_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
snd_soc_component_write(component, RT298_SET_PIN_DMIC1, 0x20);
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_component_write(component, RT298_SET_PIN_DMIC1, 0);
break;
default:
return 0;
}
return 0;
}
static int rt298_adc_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
unsigned int nid;
nid = (w->reg >> 20) & 0xff;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
snd_soc_component_update_bits(component,
VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
0x7080, 0x7000);
/* If MCLK doesn't exist, reset AD filter */
if (!(snd_soc_component_read(component, RT298_VAD_CTRL) & 0x200)) {
pr_info("NO MCLK\n");
switch (nid) {
case RT298_ADC_IN1:
snd_soc_component_update_bits(component,
RT298_D_FILTER_CTRL, 0x2, 0x2);
mdelay(10);
snd_soc_component_update_bits(component,
RT298_D_FILTER_CTRL, 0x2, 0x0);
break;
case RT298_ADC_IN2:
snd_soc_component_update_bits(component,
RT298_D_FILTER_CTRL, 0x4, 0x4);
mdelay(10);
snd_soc_component_update_bits(component,
RT298_D_FILTER_CTRL, 0x4, 0x0);
break;
}
}
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_component_update_bits(component,
VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
0x7080, 0x7080);
break;
default:
return 0;
}
return 0;
}
static int rt298_mic1_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
snd_soc_component_update_bits(component,
RT298_A_BIAS_CTRL3, 0xc000, 0x8000);
snd_soc_component_update_bits(component,
RT298_A_BIAS_CTRL2, 0xc000, 0x8000);
break;
case SND_SOC_DAPM_POST_PMD:
snd_soc_component_update_bits(component,
RT298_A_BIAS_CTRL3, 0xc000, 0x0000);
snd_soc_component_update_bits(component,
RT298_A_BIAS_CTRL2, 0xc000, 0x0000);
break;
default:
return 0;
}
return 0;
}
static const struct snd_soc_dapm_widget rt298_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY_S("HV", 1, RT298_POWER_CTRL1,
12, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("VREF", RT298_POWER_CTRL1,
0, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY_S("BG_MBIAS", 1, RT298_POWER_CTRL2,
1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY_S("LDO1", 1, RT298_POWER_CTRL2,
2, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY_S("LDO2", 1, RT298_POWER_CTRL2,
3, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY_S("VREF1", 1, RT298_POWER_CTRL2,
4, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY_S("LV", 2, RT298_POWER_CTRL1,
13, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("MCLK MODE", RT298_PLL_CTRL1,
5, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("MIC1 Input Buffer", SND_SOC_NOPM,
0, 0, rt298_mic1_event, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
/* Input Lines */
SND_SOC_DAPM_INPUT("DMIC1 Pin"),
SND_SOC_DAPM_INPUT("DMIC2 Pin"),
SND_SOC_DAPM_INPUT("MIC1"),
SND_SOC_DAPM_INPUT("LINE1"),
SND_SOC_DAPM_INPUT("Beep"),
/* DMIC */
SND_SOC_DAPM_PGA_E("DMIC1", RT298_SET_POWER(RT298_DMIC1), 0, 1,
NULL, 0, rt298_set_dmic1_event,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_PGA("DMIC2", RT298_SET_POWER(RT298_DMIC2), 0, 1,
NULL, 0),
SND_SOC_DAPM_SUPPLY("DMIC Receiver", SND_SOC_NOPM,
0, 0, NULL, 0),
/* REC Mixer */
SND_SOC_DAPM_MIXER("RECMIX", SND_SOC_NOPM, 0, 0,
rt298_rec_mix, ARRAY_SIZE(rt298_rec_mix)),
/* ADCs */
SND_SOC_DAPM_ADC("ADC 0", NULL, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_ADC("ADC 1", NULL, SND_SOC_NOPM, 0, 0),
/* ADC Mux */
SND_SOC_DAPM_MUX_E("ADC 0 Mux", RT298_SET_POWER(RT298_ADC_IN1), 0, 1,
&rt298_adc0_mux, rt298_adc_event, SND_SOC_DAPM_PRE_PMD |
SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_MUX_E("ADC 1 Mux", RT298_SET_POWER(RT298_ADC_IN2), 0, 1,
&rt298_adc1_mux, rt298_adc_event, SND_SOC_DAPM_PRE_PMD |
SND_SOC_DAPM_POST_PMU),
/* Audio Interface */
SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("AIF1TX", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("AIF2RX", "AIF2 Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("AIF2TX", "AIF2 Capture", 0, SND_SOC_NOPM, 0, 0),
/* Output Side */
/* DACs */
SND_SOC_DAPM_DAC("DAC 0", NULL, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("DAC 1", NULL, SND_SOC_NOPM, 0, 0),
/* Output Mux */
SND_SOC_DAPM_MUX("SPK Mux", SND_SOC_NOPM, 0, 0, &rt298_spo_mux),
SND_SOC_DAPM_MUX("HPO Mux", SND_SOC_NOPM, 0, 0, &rt298_hpo_mux),
SND_SOC_DAPM_SUPPLY("HP Power", RT298_SET_PIN_HPO,
RT298_SET_PIN_SFT, 0, NULL, 0),
/* Output Mixer */
SND_SOC_DAPM_MIXER("Front", RT298_SET_POWER(RT298_DAC_OUT1), 0, 1,
rt298_front_mix, ARRAY_SIZE(rt298_front_mix)),
SND_SOC_DAPM_PGA("Surround", RT298_SET_POWER(RT298_DAC_OUT2), 0, 1,
NULL, 0),
/* Output Pga */
SND_SOC_DAPM_SWITCH_E("SPO", SND_SOC_NOPM, 0, 0,
&spo_enable_control, rt298_spk_event,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_SWITCH("HPO L", SND_SOC_NOPM, 0, 0,
&hpol_enable_control),
SND_SOC_DAPM_SWITCH("HPO R", SND_SOC_NOPM, 0, 0,
&hpor_enable_control),
/* Output Lines */
SND_SOC_DAPM_OUTPUT("SPOL"),
SND_SOC_DAPM_OUTPUT("SPOR"),
SND_SOC_DAPM_OUTPUT("HPO Pin"),
SND_SOC_DAPM_OUTPUT("SPDIF"),
};
static const struct snd_soc_dapm_route rt298_dapm_routes[] = {
{"ADC 0", NULL, "MCLK MODE", is_mclk_mode},
{"ADC 1", NULL, "MCLK MODE", is_mclk_mode},
{"Front", NULL, "MCLK MODE", is_mclk_mode},
{"Surround", NULL, "MCLK MODE", is_mclk_mode},
{"HP Power", NULL, "LDO1"},
{"HP Power", NULL, "LDO2"},
{"HP Power", NULL, "LV"},
{"HP Power", NULL, "VREF1"},
{"HP Power", NULL, "BG_MBIAS"},
{"MIC1", NULL, "LDO1"},
{"MIC1", NULL, "LDO2"},
{"MIC1", NULL, "HV"},
{"MIC1", NULL, "LV"},
{"MIC1", NULL, "VREF"},
{"MIC1", NULL, "VREF1"},
{"MIC1", NULL, "BG_MBIAS"},
{"MIC1", NULL, "MIC1 Input Buffer"},
{"SPO", NULL, "LDO1"},
{"SPO", NULL, "LDO2"},
{"SPO", NULL, "HV"},
{"SPO", NULL, "LV"},
{"SPO", NULL, "VREF"},
{"SPO", NULL, "VREF1"},
{"SPO", NULL, "BG_MBIAS"},
{"DMIC1", NULL, "DMIC1 Pin"},
{"DMIC2", NULL, "DMIC2 Pin"},
{"DMIC1", NULL, "DMIC Receiver"},
{"DMIC2", NULL, "DMIC Receiver"},
{"RECMIX", "Beep Switch", "Beep"},
{"RECMIX", "Line1 Switch", "LINE1"},
{"RECMIX", "Mic1 Switch", "MIC1"},
{"ADC 0 Mux", "Dmic", "DMIC1"},
{"ADC 0 Mux", "RECMIX", "RECMIX"},
{"ADC 0 Mux", "Mic", "MIC1"},
{"ADC 1 Mux", "Dmic", "DMIC2"},
{"ADC 1 Mux", "RECMIX", "RECMIX"},
{"ADC 1 Mux", "Mic", "MIC1"},
{"ADC 0", NULL, "ADC 0 Mux"},
{"ADC 1", NULL, "ADC 1 Mux"},
{"AIF1TX", NULL, "ADC 0"},
{"AIF2TX", NULL, "ADC 1"},
{"DAC 0", NULL, "AIF1RX"},
{"DAC 1", NULL, "AIF2RX"},
{"Front", "DAC Switch", "DAC 0"},
{"Front", "RECMIX Switch", "RECMIX"},
{"Surround", NULL, "DAC 1"},
{"SPK Mux", "Front", "Front"},
{"SPK Mux", "Surround", "Surround"},
{"HPO Mux", "Front", "Front"},
{"HPO Mux", "Surround", "Surround"},
{"SPO", "Switch", "SPK Mux"},
{"HPO L", "Switch", "HPO Mux"},
{"HPO R", "Switch", "HPO Mux"},
{"HPO L", NULL, "HP Power"},
{"HPO R", NULL, "HP Power"},
{"SPOL", NULL, "SPO"},
{"SPOR", NULL, "SPO"},
{"HPO Pin", NULL, "HPO L"},
{"HPO Pin", NULL, "HPO R"},
};
static int rt298_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
unsigned int val = 0;
int d_len_code;
switch (params_rate(params)) {
/* bit 14 0:48K 1:44.1K */
case 44100:
case 48000:
break;
default:
dev_err(component->dev, "Unsupported sample rate %d\n",
params_rate(params));
return -EINVAL;
}
switch (rt298->sys_clk) {
case 12288000:
case 24576000:
if (params_rate(params) != 48000) {
dev_err(component->dev, "Sys_clk is not matched (%d %d)\n",
params_rate(params), rt298->sys_clk);
return -EINVAL;
}
break;
case 11289600:
case 22579200:
if (params_rate(params) != 44100) {
dev_err(component->dev, "Sys_clk is not matched (%d %d)\n",
params_rate(params), rt298->sys_clk);
return -EINVAL;
}
break;
}
if (params_channels(params) <= 16) {
/* bit 3:0 Number of Channel */
val |= (params_channels(params) - 1);
} else {
dev_err(component->dev, "Unsupported channels %d\n",
params_channels(params));
return -EINVAL;
}
switch (params_width(params)) {
/* bit 6:4 Bits per Sample */
case 16:
d_len_code = 0;
val |= (0x1 << 4);
break;
case 32:
d_len_code = 2;
val |= (0x4 << 4);
break;
case 20:
d_len_code = 1;
val |= (0x2 << 4);
break;
case 24:
d_len_code = 2;
val |= (0x3 << 4);
break;
case 8:
d_len_code = 3;
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x0018, d_len_code << 3);
dev_dbg(component->dev, "format val = 0x%x\n", val);
snd_soc_component_update_bits(component, RT298_DAC_FORMAT, 0x407f, val);
snd_soc_component_update_bits(component, RT298_ADC_FORMAT, 0x407f, val);
return 0;
}
static int rt298_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component = dai->component;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x800, 0x800);
break;
case SND_SOC_DAIFMT_CBS_CFS:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x800, 0x0);
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x300, 0x0);
break;
case SND_SOC_DAIFMT_LEFT_J:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x300, 0x1 << 8);
break;
case SND_SOC_DAIFMT_DSP_A:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x300, 0x2 << 8);
break;
case SND_SOC_DAIFMT_DSP_B:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x300, 0x3 << 8);
break;
default:
return -EINVAL;
}
/* bit 15 Stream Type 0:PCM 1:Non-PCM */
snd_soc_component_update_bits(component, RT298_DAC_FORMAT, 0x8000, 0);
snd_soc_component_update_bits(component, RT298_ADC_FORMAT, 0x8000, 0);
return 0;
}
static int rt298_set_dai_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = dai->component;
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
dev_dbg(component->dev, "%s freq=%d\n", __func__, freq);
if (RT298_SCLK_S_MCLK == clk_id) {
snd_soc_component_update_bits(component,
RT298_I2S_CTRL2, 0x0100, 0x0);
snd_soc_component_update_bits(component,
RT298_PLL_CTRL1, 0x20, 0x20);
} else {
snd_soc_component_update_bits(component,
RT298_I2S_CTRL2, 0x0100, 0x0100);
snd_soc_component_update_bits(component,
RT298_PLL_CTRL1, 0x20, 0x0);
}
switch (freq) {
case 19200000:
if (RT298_SCLK_S_MCLK == clk_id) {
dev_err(component->dev, "Should not use MCLK\n");
return -EINVAL;
}
snd_soc_component_update_bits(component,
RT298_I2S_CTRL2, 0x40, 0x40);
break;
case 24000000:
if (RT298_SCLK_S_MCLK == clk_id) {
dev_err(component->dev, "Should not use MCLK\n");
return -EINVAL;
}
snd_soc_component_update_bits(component,
RT298_I2S_CTRL2, 0x40, 0x0);
break;
case 12288000:
case 11289600:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL2, 0x8, 0x0);
snd_soc_component_update_bits(component,
RT298_CLK_DIV, 0xfc1e, 0x0004);
break;
case 24576000:
case 22579200:
snd_soc_component_update_bits(component,
RT298_I2S_CTRL2, 0x8, 0x8);
snd_soc_component_update_bits(component,
RT298_CLK_DIV, 0xfc1e, 0x5406);
break;
default:
dev_err(component->dev, "Unsupported system clock\n");
return -EINVAL;
}
rt298->sys_clk = freq;
rt298->clk_id = clk_id;
return 0;
}
static int rt298_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
{
struct snd_soc_component *component = dai->component;
dev_dbg(component->dev, "%s ratio=%d\n", __func__, ratio);
if (50 == ratio)
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x1000, 0x1000);
else
snd_soc_component_update_bits(component,
RT298_I2S_CTRL1, 0x1000, 0x0);
return 0;
}
static int rt298_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
switch (level) {
case SND_SOC_BIAS_PREPARE:
if (SND_SOC_BIAS_STANDBY ==
snd_soc_component_get_bias_level(component)) {
snd_soc_component_write(component,
RT298_SET_AUDIO_POWER, AC_PWRST_D0);
snd_soc_component_update_bits(component, 0x0d, 0x200, 0x200);
snd_soc_component_update_bits(component, 0x52, 0x80, 0x0);
mdelay(20);
snd_soc_component_update_bits(component, 0x0d, 0x200, 0x0);
snd_soc_component_update_bits(component, 0x52, 0x80, 0x80);
}
break;
case SND_SOC_BIAS_STANDBY:
snd_soc_component_write(component,
RT298_SET_AUDIO_POWER, AC_PWRST_D3);
break;
default:
break;
}
return 0;
}
static irqreturn_t rt298_irq(int irq, void *data)
{
struct rt298_priv *rt298 = data;
bool hp = false;
bool mic = false;
int ret, status = 0;
ret = rt298_jack_detect(rt298, &hp, &mic);
/* Clear IRQ */
regmap_update_bits(rt298->regmap, RT298_IRQ_CTRL, 0x1, 0x1);
if (ret == 0) {
if (hp)
status |= SND_JACK_HEADPHONE;
if (mic)
status |= SND_JACK_MICROPHONE;
snd_soc_jack_report(rt298->jack, status,
SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
pm_wakeup_event(&rt298->i2c->dev, 300);
}
return IRQ_HANDLED;
}
static int rt298_probe(struct snd_soc_component *component)
{
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
rt298->component = component;
INIT_DELAYED_WORK(&rt298->jack_detect_work, rt298_jack_detect_work);
if (rt298->i2c->irq)
schedule_delayed_work(&rt298->jack_detect_work,
msecs_to_jiffies(1250));
return 0;
}
static void rt298_remove(struct snd_soc_component *component)
{
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
cancel_delayed_work_sync(&rt298->jack_detect_work);
rt298->component = NULL;
}
#ifdef CONFIG_PM
static int rt298_suspend(struct snd_soc_component *component)
{
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
rt298->is_hp_in = -1;
regcache_cache_only(rt298->regmap, true);
regcache_mark_dirty(rt298->regmap);
return 0;
}
static int rt298_resume(struct snd_soc_component *component)
{
struct rt298_priv *rt298 = snd_soc_component_get_drvdata(component);
regcache_cache_only(rt298->regmap, false);
rt298_index_sync(component);
regcache_sync(rt298->regmap);
return 0;
}
#else
#define rt298_suspend NULL
#define rt298_resume NULL
#endif
#define RT298_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
#define RT298_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
static const struct snd_soc_dai_ops rt298_aif_dai_ops = {
.hw_params = rt298_hw_params,
.set_fmt = rt298_set_dai_fmt,
.set_sysclk = rt298_set_dai_sysclk,
.set_bclk_ratio = rt298_set_bclk_ratio,
};
static struct snd_soc_dai_driver rt298_dai[] = {
{
.name = "rt298-aif1",
.id = RT298_AIF1,
.playback = {
.stream_name = "AIF1 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT298_STEREO_RATES,
.formats = RT298_FORMATS,
},
.capture = {
.stream_name = "AIF1 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT298_STEREO_RATES,
.formats = RT298_FORMATS,
},
.ops = &rt298_aif_dai_ops,
.symmetric_rate = 1,
},
{
.name = "rt298-aif2",
.id = RT298_AIF2,
.playback = {
.stream_name = "AIF2 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT298_STEREO_RATES,
.formats = RT298_FORMATS,
},
.capture = {
.stream_name = "AIF2 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT298_STEREO_RATES,
.formats = RT298_FORMATS,
},
.ops = &rt298_aif_dai_ops,
.symmetric_rate = 1,
},
};
static const struct snd_soc_component_driver soc_component_dev_rt298 = {
.probe = rt298_probe,
.remove = rt298_remove,
.suspend = rt298_suspend,
.resume = rt298_resume,
.set_bias_level = rt298_set_bias_level,
.set_jack = rt298_mic_detect,
.controls = rt298_snd_controls,
.num_controls = ARRAY_SIZE(rt298_snd_controls),
.dapm_widgets = rt298_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(rt298_dapm_widgets),
.dapm_routes = rt298_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(rt298_dapm_routes),
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct regmap_config rt298_regmap = {
.reg_bits = 32,
.val_bits = 32,
.max_register = 0x02370100,
.volatile_reg = rt298_volatile_register,
.readable_reg = rt298_readable_register,
.reg_write = rl6347a_hw_write,
.reg_read = rl6347a_hw_read,
.cache_type = REGCACHE_RBTREE,
.reg_defaults = rt298_reg,
.num_reg_defaults = ARRAY_SIZE(rt298_reg),
};
static const struct i2c_device_id rt298_i2c_id[] = {
{"rt298"},
{}
};
MODULE_DEVICE_TABLE(i2c, rt298_i2c_id);
#ifdef CONFIG_ACPI
static const struct acpi_device_id rt298_acpi_match[] = {
{ "INT343A", 0 },
{},
};
MODULE_DEVICE_TABLE(acpi, rt298_acpi_match);
#endif
static const struct dmi_system_id force_combo_jack_table[] = {
{
.ident = "Intel Broxton P",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp"),
DMI_MATCH(DMI_PRODUCT_NAME, "Broxton P")
}
},
{
.ident = "Intel Gemini Lake",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp"),
DMI_MATCH(DMI_PRODUCT_NAME, "Geminilake")
}
},
{
.ident = "Intel Kabylake R RVP",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "Kabylake Client platform")
}
},
{ }
};
static int rt298_i2c_probe(struct i2c_client *i2c)
{
struct rt298_platform_data *pdata = dev_get_platdata(&i2c->dev);
struct rt298_priv *rt298;
struct device *dev = &i2c->dev;
const struct acpi_device_id *acpiid;
int i, ret;
rt298 = devm_kzalloc(&i2c->dev, sizeof(*rt298),
GFP_KERNEL);
if (NULL == rt298)
return -ENOMEM;
rt298->regmap = devm_regmap_init(&i2c->dev, NULL, i2c, &rt298_regmap);
if (IS_ERR(rt298->regmap)) {
ret = PTR_ERR(rt298->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
regmap_read(rt298->regmap,
RT298_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &ret);
if (ret != RT298_VENDOR_ID) {
dev_err(&i2c->dev,
"Device with ID register %#x is not rt298\n", ret);
return -ENODEV;
}
rt298->index_cache = devm_kmemdup(&i2c->dev, rt298_index_def,
sizeof(rt298_index_def), GFP_KERNEL);
if (!rt298->index_cache)
return -ENOMEM;
rt298->index_cache_size = INDEX_CACHE_SIZE;
rt298->i2c = i2c;
i2c_set_clientdata(i2c, rt298);
/* restore codec default */
for (i = 0; i < INDEX_CACHE_SIZE; i++)
regmap_write(rt298->regmap, rt298->index_cache[i].reg,
rt298->index_cache[i].def);
for (i = 0; i < ARRAY_SIZE(rt298_reg); i++)
regmap_write(rt298->regmap, rt298_reg[i].reg,
rt298_reg[i].def);
if (pdata)
rt298->pdata = *pdata;
/* enable jack combo mode on supported devices */
acpiid = acpi_match_device(dev->driver->acpi_match_table, dev);
if (acpiid && acpiid->driver_data) {
rt298->pdata = *(struct rt298_platform_data *)
acpiid->driver_data;
}
if (dmi_check_system(force_combo_jack_table)) {
rt298->pdata.cbj_en = true;
rt298->pdata.gpio2_en = false;
}
/* VREF Charging */
regmap_update_bits(rt298->regmap, 0x04, 0x80, 0x80);
regmap_update_bits(rt298->regmap, 0x1b, 0x860, 0x860);
/* Vref2 */
regmap_update_bits(rt298->regmap, 0x08, 0x20, 0x20);
regmap_write(rt298->regmap, RT298_SET_AUDIO_POWER, AC_PWRST_D3);
for (i = 0; i < RT298_POWER_REG_LEN; i++)
regmap_write(rt298->regmap,
RT298_SET_POWER(rt298_support_power_controls[i]),
AC_PWRST_D1);
if (!rt298->pdata.cbj_en) {
regmap_write(rt298->regmap, RT298_CBJ_CTRL2, 0x0000);
regmap_write(rt298->regmap, RT298_MIC1_DET_CTRL, 0x0816);
regmap_update_bits(rt298->regmap,
RT298_CBJ_CTRL1, 0xf000, 0xb000);
} else {
regmap_update_bits(rt298->regmap,
RT298_CBJ_CTRL1, 0xf000, 0x5000);
}
mdelay(10);
if (!rt298->pdata.gpio2_en)
regmap_write(rt298->regmap, RT298_SET_DMIC2_DEFAULT, 0x40);
else
regmap_write(rt298->regmap, RT298_SET_DMIC2_DEFAULT, 0);
mdelay(10);
regmap_write(rt298->regmap, RT298_MISC_CTRL1, 0x0000);
regmap_update_bits(rt298->regmap,
RT298_WIND_FILTER_CTRL, 0x0082, 0x0082);
regmap_write(rt298->regmap, RT298_UNSOLICITED_INLINE_CMD, 0x81);
regmap_write(rt298->regmap, RT298_UNSOLICITED_HP_OUT, 0x82);
regmap_write(rt298->regmap, RT298_UNSOLICITED_MIC1, 0x84);
regmap_update_bits(rt298->regmap, RT298_IRQ_FLAG_CTRL, 0x2, 0x2);
rt298->is_hp_in = -1;
if (rt298->i2c->irq) {
ret = request_threaded_irq(rt298->i2c->irq, NULL, rt298_irq,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "rt298", rt298);
if (ret != 0) {
dev_err(&i2c->dev,
"Failed to request IRQ: %d\n", ret);
return ret;
}
}
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_rt298,
rt298_dai, ARRAY_SIZE(rt298_dai));
return ret;
}
static void rt298_i2c_remove(struct i2c_client *i2c)
{
struct rt298_priv *rt298 = i2c_get_clientdata(i2c);
if (i2c->irq)
free_irq(i2c->irq, rt298);
}
static struct i2c_driver rt298_i2c_driver = {
.driver = {
.name = "rt298",
.acpi_match_table = ACPI_PTR(rt298_acpi_match),
},
.probe = rt298_i2c_probe,
.remove = rt298_i2c_remove,
.id_table = rt298_i2c_id,
};
module_i2c_driver(rt298_i2c_driver);
MODULE_DESCRIPTION("ASoC RT298 driver");
MODULE_AUTHOR("Bard Liao <bardliao@realtek.com>");
MODULE_LICENSE("GPL");
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