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linux-stable/sound/soc/codecs/rt711.c
Pierre-Louis Bossart a8590dd73d
ASoC: rt711: enable pm_runtime in probe, keep status as 'suspended' 
In stress cases involving module insertion/removal followed by
playback/capture, it can happen that capture/playback is started
before the codec enumeration completes.

The codec driver registers its components with the ASoC framework
during the probe stage, so there is currently no way for the card
creation to wait for the codec enumeration/initialization to complete.

In addition, when the capture/playback starts, the ASoC framework uses
pm_runtime_get_sync() to properly refcount and power-manage
devices. This is problematic in the SoundWire case because pm_runtime
is enabled during the enumeration/initialization stage, so
pm_runtime_get_sync() will return -EACCESS which is
ignored. Additional errors will happen when setting the pm_runtime
status as 'active' because the parent is not properly resumed,
resulting in an error such as:

"rt711 sdw:0:025d:0711:00: runtime PM trying to activate child device
sdw:0:025d:0711:00 but parent (sdw-master-0) is not active"

This patch suggests enabling pm_runtime during the probe, but marking
the device as 'active' only after it is enumerated. That will force a
dependency between the card and the codec, pm_runtime_get_sync() will
have to wait for the codec device to resume and hence implicitly wait
for the enumeration/initialization to be completed. In the nominal
case where the codec device is already active the get_sync() would
only perform a ref-count increase.

Closes: https://github.com/thesofproject/linux/issues/4328
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230802153629.53576-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-08-07 14:32:22 +01:00

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// SPDX-License-Identifier: GPL-2.0
//
// rt711.c -- rt711 ALSA SoC audio driver
//
// Copyright(c) 2019 Realtek Semiconductor Corp.
//
//
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm_runtime.h>
#include <linux/pm.h>
#include <linux/soundwire/sdw.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/sdw.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/hda_verbs.h>
#include <sound/jack.h>
#include "rt711.h"
static int rt711_index_write(struct regmap *regmap,
unsigned int nid, unsigned int reg, unsigned int value)
{
int ret;
unsigned int addr = ((RT711_PRIV_INDEX_W_H | nid) << 8) | reg;
ret = regmap_write(regmap, addr, value);
if (ret < 0)
pr_err("Failed to set private value: %06x <= %04x ret=%d\n",
addr, value, ret);
return ret;
}
static int rt711_index_read(struct regmap *regmap,
unsigned int nid, unsigned int reg, unsigned int *value)
{
int ret;
unsigned int addr = ((RT711_PRIV_INDEX_W_H | nid) << 8) | reg;
*value = 0;
ret = regmap_read(regmap, addr, value);
if (ret < 0)
pr_err("Failed to get private value: %06x => %04x ret=%d\n",
addr, *value, ret);
return ret;
}
static int rt711_index_update_bits(struct regmap *regmap, unsigned int nid,
unsigned int reg, unsigned int mask, unsigned int val)
{
unsigned int tmp, orig;
int ret;
ret = rt711_index_read(regmap, nid, reg, &orig);
if (ret < 0)
return ret;
tmp = orig & ~mask;
tmp |= val & mask;
return rt711_index_write(regmap, nid, reg, tmp);
}
static void rt711_reset(struct regmap *regmap)
{
regmap_write(regmap, RT711_FUNC_RESET, 0);
rt711_index_update_bits(regmap, RT711_VENDOR_REG,
RT711_PARA_VERB_CTL, RT711_HIDDEN_REG_SW_RESET,
RT711_HIDDEN_REG_SW_RESET);
}
static int rt711_calibration(struct rt711_priv *rt711)
{
unsigned int val, loop = 0;
struct device *dev;
struct regmap *regmap = rt711->regmap;
int ret = 0;
mutex_lock(&rt711->calibrate_mutex);
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
dev = regmap_get_device(regmap);
/* Calibration manual mode */
rt711_index_update_bits(regmap, RT711_VENDOR_REG, RT711_FSM_CTL,
0xf, 0x0);
/* trigger */
rt711_index_update_bits(regmap, RT711_VENDOR_CALI,
RT711_DAC_DC_CALI_CTL1, RT711_DAC_DC_CALI_TRIGGER,
RT711_DAC_DC_CALI_TRIGGER);
/* wait for calibration process */
rt711_index_read(regmap, RT711_VENDOR_CALI,
RT711_DAC_DC_CALI_CTL1, &val);
while (val & RT711_DAC_DC_CALI_TRIGGER) {
if (loop >= 500) {
pr_err("%s, calibration time-out!\n",
__func__);
ret = -ETIMEDOUT;
break;
}
loop++;
usleep_range(10000, 11000);
rt711_index_read(regmap, RT711_VENDOR_CALI,
RT711_DAC_DC_CALI_CTL1, &val);
}
/* depop mode */
rt711_index_update_bits(regmap, RT711_VENDOR_REG,
RT711_FSM_CTL, 0xf, RT711_DEPOP_CTL);
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
mutex_unlock(&rt711->calibrate_mutex);
dev_dbg(dev, "%s calibration complete, ret=%d\n", __func__, ret);
return ret;
}
static unsigned int rt711_button_detect(struct rt711_priv *rt711)
{
unsigned int btn_type = 0, val80, val81;
int ret;
ret = rt711_index_read(rt711->regmap, RT711_VENDOR_REG,
RT711_IRQ_FLAG_TABLE1, &val80);
if (ret < 0)
goto read_error;
ret = rt711_index_read(rt711->regmap, RT711_VENDOR_REG,
RT711_IRQ_FLAG_TABLE2, &val81);
if (ret < 0)
goto read_error;
val80 &= 0x0381;
val81 &= 0xff00;
switch (val80) {
case 0x0200:
case 0x0100:
case 0x0080:
btn_type |= SND_JACK_BTN_0;
break;
case 0x0001:
btn_type |= SND_JACK_BTN_3;
break;
}
switch (val81) {
case 0x8000:
case 0x4000:
case 0x2000:
btn_type |= SND_JACK_BTN_1;
break;
case 0x1000:
case 0x0800:
case 0x0400:
btn_type |= SND_JACK_BTN_2;
break;
case 0x0200:
case 0x0100:
btn_type |= SND_JACK_BTN_3;
break;
}
read_error:
return btn_type;
}
static int rt711_headset_detect(struct rt711_priv *rt711)
{
unsigned int buf, loop = 0;
int ret;
unsigned int jack_status = 0, reg;
ret = rt711_index_read(rt711->regmap, RT711_VENDOR_REG,
RT711_COMBO_JACK_AUTO_CTL2, &buf);
if (ret < 0)
goto io_error;
while (loop < 500 &&
(buf & RT711_COMBOJACK_AUTO_DET_STATUS) == 0) {
loop++;
usleep_range(9000, 10000);
ret = rt711_index_read(rt711->regmap, RT711_VENDOR_REG,
RT711_COMBO_JACK_AUTO_CTL2, &buf);
if (ret < 0)
goto io_error;
reg = RT711_VERB_GET_PIN_SENSE | RT711_HP_OUT;
ret = regmap_read(rt711->regmap, reg, &jack_status);
if (ret < 0)
goto io_error;
if ((jack_status & (1 << 31)) == 0)
goto remove_error;
}
if (loop >= 500)
goto to_error;
if (buf & RT711_COMBOJACK_AUTO_DET_TRS)
rt711->jack_type = SND_JACK_HEADPHONE;
else if ((buf & RT711_COMBOJACK_AUTO_DET_CTIA) ||
(buf & RT711_COMBOJACK_AUTO_DET_OMTP))
rt711->jack_type = SND_JACK_HEADSET;
return 0;
to_error:
ret = -ETIMEDOUT;
pr_err_ratelimited("Time-out error in %s\n", __func__);
return ret;
io_error:
pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
return ret;
remove_error:
pr_err_ratelimited("Jack removal in %s\n", __func__);
return -ENODEV;
}
static void rt711_jack_detect_handler(struct work_struct *work)
{
struct rt711_priv *rt711 =
container_of(work, struct rt711_priv, jack_detect_work.work);
int btn_type = 0, ret;
unsigned int jack_status = 0, reg;
if (!rt711->hs_jack)
return;
if (!snd_soc_card_is_instantiated(rt711->component->card))
return;
if (pm_runtime_status_suspended(rt711->slave->dev.parent)) {
dev_dbg(&rt711->slave->dev,
"%s: parent device is pm_runtime_status_suspended, skipping jack detection\n",
__func__);
return;
}
reg = RT711_VERB_GET_PIN_SENSE | RT711_HP_OUT;
ret = regmap_read(rt711->regmap, reg, &jack_status);
if (ret < 0)
goto io_error;
/* pin attached */
if (jack_status & (1 << 31)) {
/* jack in */
if (rt711->jack_type == 0) {
ret = rt711_headset_detect(rt711);
if (ret < 0)
return;
if (rt711->jack_type == SND_JACK_HEADSET)
btn_type = rt711_button_detect(rt711);
} else if (rt711->jack_type == SND_JACK_HEADSET) {
/* jack is already in, report button event */
btn_type = rt711_button_detect(rt711);
}
} else {
/* jack out */
rt711->jack_type = 0;
}
dev_dbg(&rt711->slave->dev,
"in %s, jack_type=0x%x\n", __func__, rt711->jack_type);
dev_dbg(&rt711->slave->dev,
"in %s, btn_type=0x%x\n", __func__, btn_type);
snd_soc_jack_report(rt711->hs_jack, rt711->jack_type | btn_type,
SND_JACK_HEADSET |
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3);
if (btn_type) {
/* button released */
snd_soc_jack_report(rt711->hs_jack, rt711->jack_type,
SND_JACK_HEADSET |
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3);
mod_delayed_work(system_power_efficient_wq,
&rt711->jack_btn_check_work, msecs_to_jiffies(200));
}
return;
io_error:
pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
}
static void rt711_btn_check_handler(struct work_struct *work)
{
struct rt711_priv *rt711 = container_of(work, struct rt711_priv,
jack_btn_check_work.work);
int btn_type = 0, ret;
unsigned int jack_status = 0, reg;
reg = RT711_VERB_GET_PIN_SENSE | RT711_HP_OUT;
ret = regmap_read(rt711->regmap, reg, &jack_status);
if (ret < 0)
goto io_error;
/* pin attached */
if (jack_status & (1 << 31)) {
if (rt711->jack_type == SND_JACK_HEADSET) {
/* jack is already in, report button event */
btn_type = rt711_button_detect(rt711);
}
} else {
rt711->jack_type = 0;
}
/* cbj comparator */
ret = rt711_index_read(rt711->regmap, RT711_VENDOR_REG,
RT711_COMBO_JACK_AUTO_CTL2, &reg);
if (ret < 0)
goto io_error;
if ((reg & 0xf0) == 0xf0)
btn_type = 0;
dev_dbg(&rt711->slave->dev,
"%s, btn_type=0x%x\n", __func__, btn_type);
snd_soc_jack_report(rt711->hs_jack, rt711->jack_type | btn_type,
SND_JACK_HEADSET |
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3);
if (btn_type) {
/* button released */
snd_soc_jack_report(rt711->hs_jack, rt711->jack_type,
SND_JACK_HEADSET |
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3);
mod_delayed_work(system_power_efficient_wq,
&rt711->jack_btn_check_work, msecs_to_jiffies(200));
}
return;
io_error:
pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
}
static void rt711_jack_init(struct rt711_priv *rt711)
{
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(rt711->component);
mutex_lock(&rt711->calibrate_mutex);
/* power on */
if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
if (rt711->hs_jack) {
/* unsolicited response & IRQ control */
regmap_write(rt711->regmap,
RT711_SET_MIC2_UNSOLICITED_ENABLE, 0x82);
regmap_write(rt711->regmap,
RT711_SET_HP_UNSOLICITED_ENABLE, 0x81);
regmap_write(rt711->regmap,
RT711_SET_INLINE_UNSOLICITED_ENABLE, 0x83);
rt711_index_write(rt711->regmap, RT711_VENDOR_REG,
0x10, 0x2420);
rt711_index_write(rt711->regmap, RT711_VENDOR_REG,
0x19, 0x2e11);
switch (rt711->jd_src) {
case RT711_JD1:
/* default settings was already for JD1 */
break;
case RT711_JD2:
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_JD_CTL2, RT711_JD2_2PORT_200K_DECODE_HP |
RT711_HP_JD_SEL_JD2,
RT711_JD2_2PORT_200K_DECODE_HP |
RT711_HP_JD_SEL_JD2);
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_CC_DET1,
RT711_HP_JD_FINAL_RESULT_CTL_JD12,
RT711_HP_JD_FINAL_RESULT_CTL_JD12);
break;
case RT711_JD2_100K:
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_JD_CTL2, RT711_JD2_2PORT_100K_DECODE | RT711_JD2_1PORT_TYPE_DECODE |
RT711_HP_JD_SEL_JD2 | RT711_JD1_2PORT_TYPE_100K_DECODE,
RT711_JD2_2PORT_100K_DECODE_HP | RT711_JD2_1PORT_JD_HP |
RT711_HP_JD_SEL_JD2 | RT711_JD1_2PORT_JD_RESERVED);
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_CC_DET1,
RT711_HP_JD_FINAL_RESULT_CTL_JD12,
RT711_HP_JD_FINAL_RESULT_CTL_JD12);
break;
case RT711_JD2_1P8V_1PORT:
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_JD_CTL1, RT711_JD2_DIGITAL_JD_MODE_SEL,
RT711_JD2_1_JD_MODE);
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_JD_CTL2, RT711_JD2_1PORT_TYPE_DECODE |
RT711_HP_JD_SEL_JD2,
RT711_JD2_1PORT_JD_HP |
RT711_HP_JD_SEL_JD2);
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_JD_CTL4, RT711_JD2_PAD_PULL_UP_MASK |
RT711_JD2_MODE_SEL_MASK,
RT711_JD2_PAD_PULL_UP |
RT711_JD2_MODE2_1P8V_1PORT);
rt711_index_update_bits(rt711->regmap, RT711_VENDOR_REG,
RT711_CC_DET1,
RT711_HP_JD_FINAL_RESULT_CTL_JD12,
RT711_HP_JD_FINAL_RESULT_CTL_JD12);
break;
default:
dev_warn(rt711->component->dev, "Wrong JD source\n");
break;
}
dev_dbg(&rt711->slave->dev, "in %s enable\n", __func__);
mod_delayed_work(system_power_efficient_wq,
&rt711->jack_detect_work, msecs_to_jiffies(250));
} else {
regmap_write(rt711->regmap,
RT711_SET_MIC2_UNSOLICITED_ENABLE, 0x00);
regmap_write(rt711->regmap,
RT711_SET_HP_UNSOLICITED_ENABLE, 0x00);
regmap_write(rt711->regmap,
RT711_SET_INLINE_UNSOLICITED_ENABLE, 0x00);
dev_dbg(&rt711->slave->dev, "in %s disable\n", __func__);
}
/* power off */
if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
mutex_unlock(&rt711->calibrate_mutex);
}
static int rt711_set_jack_detect(struct snd_soc_component *component,
struct snd_soc_jack *hs_jack, void *data)
{
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
int ret;
rt711->hs_jack = hs_jack;
/* we can only resume if the device was initialized at least once */
if (!rt711->first_hw_init)
return 0;
ret = pm_runtime_resume_and_get(component->dev);
if (ret < 0) {
if (ret != -EACCES) {
dev_err(component->dev, "%s: failed to resume %d\n", __func__, ret);
return ret;
}
/* pm_runtime not enabled yet */
dev_dbg(component->dev, "%s: skipping jack init for now\n", __func__);
return 0;
}
rt711_jack_init(rt711);
pm_runtime_mark_last_busy(component->dev);
pm_runtime_put_autosuspend(component->dev);
return 0;
}
static void rt711_get_gain(struct rt711_priv *rt711, unsigned int addr_h,
unsigned int addr_l, unsigned int val_h,
unsigned int *r_val, unsigned int *l_val)
{
/* R Channel */
*r_val = (val_h << 8);
regmap_read(rt711->regmap, addr_l, r_val);
/* L Channel */
val_h |= 0x20;
*l_val = (val_h << 8);
regmap_read(rt711->regmap, addr_h, l_val);
}
/* For Verb-Set Amplifier Gain (Verb ID = 3h) */
static int rt711_set_amp_gain_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(component);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
unsigned int addr_h, addr_l, val_h, val_ll, val_lr;
unsigned int read_ll, read_rl;
int i;
mutex_lock(&rt711->calibrate_mutex);
/* Can't use update bit function, so read the original value first */
addr_h = mc->reg;
addr_l = mc->rreg;
if (mc->shift == RT711_DIR_OUT_SFT) /* output */
val_h = 0x80;
else /* input */
val_h = 0x0;
rt711_get_gain(rt711, addr_h, addr_l, val_h, &read_rl, &read_ll);
/* L Channel */
if (mc->invert) {
/* for mute/unmute */
val_ll = (mc->max - ucontrol->value.integer.value[0])
<< RT711_MUTE_SFT;
/* keep gain */
read_ll = read_ll & 0x7f;
val_ll |= read_ll;
} else {
/* for gain */
val_ll = ((ucontrol->value.integer.value[0]) & 0x7f);
if (val_ll > mc->max)
val_ll = mc->max;
/* keep mute status */
read_ll = read_ll & (1 << RT711_MUTE_SFT);
val_ll |= read_ll;
}
if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
/* R Channel */
if (mc->invert) {
/* for mute/unmute */
val_lr = (mc->max - ucontrol->value.integer.value[1])
<< RT711_MUTE_SFT;
/* keep gain */
read_rl = read_rl & 0x7f;
val_lr |= read_rl;
} else {
/* for gain */
val_lr = ((ucontrol->value.integer.value[1]) & 0x7f);
if (val_lr > mc->max)
val_lr = mc->max;
/* keep mute status */
read_rl = read_rl & (1 << RT711_MUTE_SFT);
val_lr |= read_rl;
}
for (i = 0; i < 3; i++) { /* retry 3 times at most */
if (val_ll == val_lr) {
/* Set both L/R channels at the same time */
val_h = (1 << mc->shift) | (3 << 4);
regmap_write(rt711->regmap,
addr_h, (val_h << 8 | val_ll));
regmap_write(rt711->regmap,
addr_l, (val_h << 8 | val_ll));
} else {
/* Lch*/
val_h = (1 << mc->shift) | (1 << 5);
regmap_write(rt711->regmap,
addr_h, (val_h << 8 | val_ll));
/* Rch */
val_h = (1 << mc->shift) | (1 << 4);
regmap_write(rt711->regmap,
addr_l, (val_h << 8 | val_lr));
}
/* check result */
if (mc->shift == RT711_DIR_OUT_SFT) /* output */
val_h = 0x80;
else /* input */
val_h = 0x0;
rt711_get_gain(rt711, addr_h, addr_l, val_h,
&read_rl, &read_ll);
if (read_rl == val_lr && read_ll == val_ll)
break;
}
if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
mutex_unlock(&rt711->calibrate_mutex);
return 0;
}
static int rt711_set_amp_gain_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
unsigned int addr_h, addr_l, val_h;
unsigned int read_ll, read_rl;
/* switch to get command */
addr_h = mc->reg;
addr_l = mc->rreg;
if (mc->shift == RT711_DIR_OUT_SFT) /* output */
val_h = 0x80;
else /* input */
val_h = 0x0;
rt711_get_gain(rt711, addr_h, addr_l, val_h, &read_rl, &read_ll);
if (mc->invert) {
/* mute/unmute for switch controls */
read_ll = !((read_ll & 0x80) >> RT711_MUTE_SFT);
read_rl = !((read_rl & 0x80) >> RT711_MUTE_SFT);
} else {
/* for gain volume controls */
read_ll = read_ll & 0x7f;
read_rl = read_rl & 0x7f;
}
ucontrol->value.integer.value[0] = read_ll;
ucontrol->value.integer.value[1] = read_rl;
return 0;
}
static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -6525, 75, 0);
static const DECLARE_TLV_DB_SCALE(in_vol_tlv, -1725, 75, 0);
static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 1000, 0);
static const struct snd_kcontrol_new rt711_snd_controls[] = {
SOC_DOUBLE_R_EXT_TLV("DAC Surr Playback Volume",
RT711_SET_GAIN_DAC2_H, RT711_SET_GAIN_DAC2_L,
RT711_DIR_OUT_SFT, 0x57, 0,
rt711_set_amp_gain_get, rt711_set_amp_gain_put, out_vol_tlv),
SOC_DOUBLE_R_EXT("ADC 08 Capture Switch",
RT711_SET_GAIN_ADC2_H, RT711_SET_GAIN_ADC2_L,
RT711_DIR_IN_SFT, 1, 1,
rt711_set_amp_gain_get, rt711_set_amp_gain_put),
SOC_DOUBLE_R_EXT("ADC 09 Capture Switch",
RT711_SET_GAIN_ADC1_H, RT711_SET_GAIN_ADC1_L,
RT711_DIR_IN_SFT, 1, 1,
rt711_set_amp_gain_get, rt711_set_amp_gain_put),
SOC_DOUBLE_R_EXT_TLV("ADC 08 Capture Volume",
RT711_SET_GAIN_ADC2_H, RT711_SET_GAIN_ADC2_L,
RT711_DIR_IN_SFT, 0x3f, 0,
rt711_set_amp_gain_get, rt711_set_amp_gain_put, in_vol_tlv),
SOC_DOUBLE_R_EXT_TLV("ADC 09 Capture Volume",
RT711_SET_GAIN_ADC1_H, RT711_SET_GAIN_ADC1_L,
RT711_DIR_IN_SFT, 0x3f, 0,
rt711_set_amp_gain_get, rt711_set_amp_gain_put, in_vol_tlv),
SOC_DOUBLE_R_EXT_TLV("AMIC Volume",
RT711_SET_GAIN_AMIC_H, RT711_SET_GAIN_AMIC_L,
RT711_DIR_IN_SFT, 3, 0,
rt711_set_amp_gain_get, rt711_set_amp_gain_put, mic_vol_tlv),
SOC_DOUBLE_R_EXT_TLV("DMIC1 Volume",
RT711_SET_GAIN_DMIC1_H, RT711_SET_GAIN_DMIC1_L,
RT711_DIR_IN_SFT, 3, 0,
rt711_set_amp_gain_get, rt711_set_amp_gain_put, mic_vol_tlv),
SOC_DOUBLE_R_EXT_TLV("DMIC2 Volume",
RT711_SET_GAIN_DMIC2_H, RT711_SET_GAIN_DMIC2_L,
RT711_DIR_IN_SFT, 3, 0,
rt711_set_amp_gain_get, rt711_set_amp_gain_put, mic_vol_tlv),
};
static int rt711_mux_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
unsigned int reg, val = 0, nid;
int ret;
if (strstr(ucontrol->id.name, "ADC 22 Mux"))
nid = RT711_MIXER_IN1;
else if (strstr(ucontrol->id.name, "ADC 23 Mux"))
nid = RT711_MIXER_IN2;
else
return -EINVAL;
/* vid = 0xf01 */
reg = RT711_VERB_SET_CONNECT_SEL | nid;
ret = regmap_read(rt711->regmap, reg, &val);
if (ret < 0) {
dev_err(component->dev, "%s: sdw read failed: %d\n",
__func__, ret);
return ret;
}
ucontrol->value.enumerated.item[0] = val;
return 0;
}
static int rt711_mux_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
struct snd_soc_dapm_context *dapm =
snd_soc_dapm_kcontrol_dapm(kcontrol);
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int *item = ucontrol->value.enumerated.item;
unsigned int val, val2 = 0, change, reg, nid;
int ret;
if (item[0] >= e->items)
return -EINVAL;
if (strstr(ucontrol->id.name, "ADC 22 Mux"))
nid = RT711_MIXER_IN1;
else if (strstr(ucontrol->id.name, "ADC 23 Mux"))
nid = RT711_MIXER_IN2;
else
return -EINVAL;
/* Verb ID = 0x701h */
val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
reg = RT711_VERB_SET_CONNECT_SEL | nid;
ret = regmap_read(rt711->regmap, reg, &val2);
if (ret < 0) {
dev_err(component->dev, "%s: sdw read failed: %d\n",
__func__, ret);
return ret;
}
if (val == val2)
change = 0;
else
change = 1;
if (change) {
reg = RT711_VERB_SET_CONNECT_SEL | nid;
regmap_write(rt711->regmap, reg, val);
}
snd_soc_dapm_mux_update_power(dapm, kcontrol,
item[0], e, NULL);
return change;
}
static const char * const adc_mux_text[] = {
"MIC2",
"LINE1",
"LINE2",
"DMIC",
};
static SOC_ENUM_SINGLE_DECL(
rt711_adc22_enum, SND_SOC_NOPM, 0, adc_mux_text);
static SOC_ENUM_SINGLE_DECL(
rt711_adc23_enum, SND_SOC_NOPM, 0, adc_mux_text);
static const struct snd_kcontrol_new rt711_adc22_mux =
SOC_DAPM_ENUM_EXT("ADC 22 Mux", rt711_adc22_enum,
rt711_mux_get, rt711_mux_put);
static const struct snd_kcontrol_new rt711_adc23_mux =
SOC_DAPM_ENUM_EXT("ADC 23 Mux", rt711_adc23_enum,
rt711_mux_get, rt711_mux_put);
static int rt711_dac_surround_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);
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
unsigned int val_h = (1 << RT711_DIR_OUT_SFT) | (0x3 << 4);
unsigned int val_l;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_write(rt711->regmap,
RT711_SET_STREAMID_DAC2, 0x10);
val_l = 0x00;
regmap_write(rt711->regmap,
RT711_SET_GAIN_HP_H, (val_h << 8 | val_l));
break;
case SND_SOC_DAPM_PRE_PMD:
val_l = (1 << RT711_MUTE_SFT);
regmap_write(rt711->regmap,
RT711_SET_GAIN_HP_H, (val_h << 8 | val_l));
usleep_range(50000, 55000);
regmap_write(rt711->regmap,
RT711_SET_STREAMID_DAC2, 0x00);
break;
}
return 0;
}
static int rt711_adc_09_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);
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_write(rt711->regmap,
RT711_SET_STREAMID_ADC1, 0x10);
break;
case SND_SOC_DAPM_PRE_PMD:
regmap_write(rt711->regmap,
RT711_SET_STREAMID_ADC1, 0x00);
break;
}
return 0;
}
static int rt711_adc_08_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);
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_write(rt711->regmap,
RT711_SET_STREAMID_ADC2, 0x10);
break;
case SND_SOC_DAPM_PRE_PMD:
regmap_write(rt711->regmap,
RT711_SET_STREAMID_ADC2, 0x00);
break;
}
return 0;
}
static const struct snd_soc_dapm_widget rt711_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("HP"),
SND_SOC_DAPM_INPUT("MIC2"),
SND_SOC_DAPM_INPUT("DMIC1"),
SND_SOC_DAPM_INPUT("DMIC2"),
SND_SOC_DAPM_INPUT("LINE1"),
SND_SOC_DAPM_INPUT("LINE2"),
SND_SOC_DAPM_DAC_E("DAC Surround", NULL, SND_SOC_NOPM, 0, 0,
rt711_dac_surround_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_ADC_E("ADC 09", NULL, SND_SOC_NOPM, 0, 0,
rt711_adc_09_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_ADC_E("ADC 08", NULL, SND_SOC_NOPM, 0, 0,
rt711_adc_08_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_MUX("ADC 22 Mux", SND_SOC_NOPM, 0, 0,
&rt711_adc22_mux),
SND_SOC_DAPM_MUX("ADC 23 Mux", SND_SOC_NOPM, 0, 0,
&rt711_adc23_mux),
SND_SOC_DAPM_AIF_IN("DP3RX", "DP3 Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("DP2TX", "DP2 Capture", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("DP4TX", "DP4 Capture", 0, SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route rt711_audio_map[] = {
{"DAC Surround", NULL, "DP3RX"},
{"DP2TX", NULL, "ADC 09"},
{"DP4TX", NULL, "ADC 08"},
{"ADC 09", NULL, "ADC 22 Mux"},
{"ADC 08", NULL, "ADC 23 Mux"},
{"ADC 22 Mux", "DMIC", "DMIC1"},
{"ADC 22 Mux", "LINE1", "LINE1"},
{"ADC 22 Mux", "LINE2", "LINE2"},
{"ADC 22 Mux", "MIC2", "MIC2"},
{"ADC 23 Mux", "DMIC", "DMIC2"},
{"ADC 23 Mux", "LINE1", "LINE1"},
{"ADC 23 Mux", "LINE2", "LINE2"},
{"ADC 23 Mux", "MIC2", "MIC2"},
{"HP", NULL, "DAC Surround"},
};
static int rt711_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(component);
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
switch (level) {
case SND_SOC_BIAS_PREPARE:
if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE,
AC_PWRST_D0);
}
break;
case SND_SOC_BIAS_STANDBY:
mutex_lock(&rt711->calibrate_mutex);
regmap_write(rt711->regmap,
RT711_SET_AUDIO_POWER_STATE,
AC_PWRST_D3);
mutex_unlock(&rt711->calibrate_mutex);
break;
default:
break;
}
return 0;
}
static int rt711_parse_dt(struct rt711_priv *rt711, struct device *dev)
{
device_property_read_u32(dev, "realtek,jd-src",
&rt711->jd_src);
return 0;
}
static int rt711_probe(struct snd_soc_component *component)
{
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
int ret;
rt711_parse_dt(rt711, &rt711->slave->dev);
rt711->component = component;
if (!rt711->first_hw_init)
return 0;
ret = pm_runtime_resume(component->dev);
if (ret < 0 && ret != -EACCES)
return ret;
return 0;
}
static const struct snd_soc_component_driver soc_codec_dev_rt711 = {
.probe = rt711_probe,
.set_bias_level = rt711_set_bias_level,
.controls = rt711_snd_controls,
.num_controls = ARRAY_SIZE(rt711_snd_controls),
.dapm_widgets = rt711_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(rt711_dapm_widgets),
.dapm_routes = rt711_audio_map,
.num_dapm_routes = ARRAY_SIZE(rt711_audio_map),
.set_jack = rt711_set_jack_detect,
.endianness = 1,
};
static int rt711_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
int direction)
{
snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
return 0;
}
static void rt711_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
snd_soc_dai_set_dma_data(dai, substream, NULL);
}
static int rt711_pcm_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 rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
struct sdw_stream_config stream_config = {0};
struct sdw_port_config port_config = {0};
struct sdw_stream_runtime *sdw_stream;
int retval;
unsigned int val = 0;
dev_dbg(dai->dev, "%s %s", __func__, dai->name);
sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
if (!sdw_stream)
return -EINVAL;
if (!rt711->slave)
return -EINVAL;
/* SoundWire specific configuration */
snd_sdw_params_to_config(substream, params, &stream_config, &port_config);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
port_config.num = 3;
} else {
if (dai->id == RT711_AIF1)
port_config.num = 4;
else if (dai->id == RT711_AIF2)
port_config.num = 2;
else
return -EINVAL;
}
retval = sdw_stream_add_slave(rt711->slave, &stream_config,
&port_config, 1, sdw_stream);
if (retval) {
dev_err(dai->dev, "Unable to configure port\n");
return retval;
}
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 8:
break;
case 16:
val |= (0x1 << 4);
break;
case 20:
val |= (0x2 << 4);
break;
case 24:
val |= (0x3 << 4);
break;
case 32:
val |= (0x4 << 4);
break;
default:
return -EINVAL;
}
/* 48Khz */
regmap_write(rt711->regmap, RT711_DAC_FORMAT_H, val);
regmap_write(rt711->regmap, RT711_ADC1_FORMAT_H, val);
regmap_write(rt711->regmap, RT711_ADC2_FORMAT_H, val);
return retval;
}
static int rt711_pcm_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
struct sdw_stream_runtime *sdw_stream =
snd_soc_dai_get_dma_data(dai, substream);
if (!rt711->slave)
return -EINVAL;
sdw_stream_remove_slave(rt711->slave, sdw_stream);
return 0;
}
#define RT711_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
#define RT711_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 rt711_ops = {
.hw_params = rt711_pcm_hw_params,
.hw_free = rt711_pcm_hw_free,
.set_stream = rt711_set_sdw_stream,
.shutdown = rt711_shutdown,
};
static struct snd_soc_dai_driver rt711_dai[] = {
{
.name = "rt711-aif1",
.id = RT711_AIF1,
.playback = {
.stream_name = "DP3 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT711_STEREO_RATES,
.formats = RT711_FORMATS,
},
.capture = {
.stream_name = "DP4 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT711_STEREO_RATES,
.formats = RT711_FORMATS,
},
.ops = &rt711_ops,
},
{
.name = "rt711-aif2",
.id = RT711_AIF2,
.capture = {
.stream_name = "DP2 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT711_STEREO_RATES,
.formats = RT711_FORMATS,
},
.ops = &rt711_ops,
}
};
/* Bus clock frequency */
#define RT711_CLK_FREQ_9600000HZ 9600000
#define RT711_CLK_FREQ_12000000HZ 12000000
#define RT711_CLK_FREQ_6000000HZ 6000000
#define RT711_CLK_FREQ_4800000HZ 4800000
#define RT711_CLK_FREQ_2400000HZ 2400000
#define RT711_CLK_FREQ_12288000HZ 12288000
int rt711_clock_config(struct device *dev)
{
struct rt711_priv *rt711 = dev_get_drvdata(dev);
unsigned int clk_freq, value;
clk_freq = (rt711->params.curr_dr_freq >> 1);
switch (clk_freq) {
case RT711_CLK_FREQ_12000000HZ:
value = 0x0;
break;
case RT711_CLK_FREQ_6000000HZ:
value = 0x1;
break;
case RT711_CLK_FREQ_9600000HZ:
value = 0x2;
break;
case RT711_CLK_FREQ_4800000HZ:
value = 0x3;
break;
case RT711_CLK_FREQ_2400000HZ:
value = 0x4;
break;
case RT711_CLK_FREQ_12288000HZ:
value = 0x5;
break;
default:
return -EINVAL;
}
regmap_write(rt711->regmap, 0xe0, value);
regmap_write(rt711->regmap, 0xf0, value);
dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
return 0;
}
static void rt711_calibration_work(struct work_struct *work)
{
struct rt711_priv *rt711 =
container_of(work, struct rt711_priv, calibration_work);
rt711_calibration(rt711);
}
int rt711_init(struct device *dev, struct regmap *sdw_regmap,
struct regmap *regmap, struct sdw_slave *slave)
{
struct rt711_priv *rt711;
int ret;
rt711 = devm_kzalloc(dev, sizeof(*rt711), GFP_KERNEL);
if (!rt711)
return -ENOMEM;
dev_set_drvdata(dev, rt711);
rt711->slave = slave;
rt711->sdw_regmap = sdw_regmap;
rt711->regmap = regmap;
regcache_cache_only(rt711->regmap, true);
mutex_init(&rt711->calibrate_mutex);
mutex_init(&rt711->disable_irq_lock);
INIT_DELAYED_WORK(&rt711->jack_detect_work, rt711_jack_detect_handler);
INIT_DELAYED_WORK(&rt711->jack_btn_check_work, rt711_btn_check_handler);
INIT_WORK(&rt711->calibration_work, rt711_calibration_work);
/*
* Mark hw_init to false
* HW init will be performed when device reports present
*/
rt711->hw_init = false;
rt711->first_hw_init = false;
/* JD source uses JD2 in default */
rt711->jd_src = RT711_JD2;
ret = devm_snd_soc_register_component(dev,
&soc_codec_dev_rt711,
rt711_dai,
ARRAY_SIZE(rt711_dai));
if (ret < 0)
return ret;
/* set autosuspend parameters */
pm_runtime_set_autosuspend_delay(dev, 3000);
pm_runtime_use_autosuspend(dev);
/* make sure the device does not suspend immediately */
pm_runtime_mark_last_busy(dev);
pm_runtime_enable(dev);
/* important note: the device is NOT tagged as 'active' and will remain
* 'suspended' until the hardware is enumerated/initialized. This is required
* to make sure the ASoC framework use of pm_runtime_get_sync() does not silently
* fail with -EACCESS because of race conditions between card creation and enumeration
*/
dev_dbg(dev, "%s\n", __func__);
return ret;
}
int rt711_io_init(struct device *dev, struct sdw_slave *slave)
{
struct rt711_priv *rt711 = dev_get_drvdata(dev);
rt711->disable_irq = false;
if (rt711->hw_init)
return 0;
regcache_cache_only(rt711->regmap, false);
if (rt711->first_hw_init)
regcache_cache_bypass(rt711->regmap, true);
/*
* PM runtime status is marked as 'active' only when a Slave reports as Attached
*/
if (!rt711->first_hw_init)
/* update count of parent 'active' children */
pm_runtime_set_active(&slave->dev);
pm_runtime_get_noresume(&slave->dev);
rt711_reset(rt711->regmap);
/* power on */
regmap_write(rt711->regmap, RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
/* Set Pin Widget */
regmap_write(rt711->regmap, RT711_SET_PIN_MIC2, 0x25);
regmap_write(rt711->regmap, RT711_SET_PIN_HP, 0xc0);
regmap_write(rt711->regmap, RT711_SET_PIN_DMIC1, 0x20);
regmap_write(rt711->regmap, RT711_SET_PIN_DMIC2, 0x20);
regmap_write(rt711->regmap, RT711_SET_PIN_LINE1, 0x20);
regmap_write(rt711->regmap, RT711_SET_PIN_LINE2, 0x20);
/* Mute HP/ADC1/ADC2 */
regmap_write(rt711->regmap, RT711_SET_GAIN_HP_H, 0xa080);
regmap_write(rt711->regmap, RT711_SET_GAIN_HP_H, 0x9080);
regmap_write(rt711->regmap, RT711_SET_GAIN_ADC2_H, 0x6080);
regmap_write(rt711->regmap, RT711_SET_GAIN_ADC2_H, 0x5080);
regmap_write(rt711->regmap, RT711_SET_GAIN_ADC1_H, 0x6080);
regmap_write(rt711->regmap, RT711_SET_GAIN_ADC1_H, 0x5080);
/* Set Configuration Default */
regmap_write(rt711->regmap, 0x4f12, 0x91);
regmap_write(rt711->regmap, 0x4e12, 0xd6);
regmap_write(rt711->regmap, 0x4d12, 0x11);
regmap_write(rt711->regmap, 0x4c12, 0x20);
regmap_write(rt711->regmap, 0x4f13, 0x91);
regmap_write(rt711->regmap, 0x4e13, 0xd6);
regmap_write(rt711->regmap, 0x4d13, 0x11);
regmap_write(rt711->regmap, 0x4c13, 0x21);
regmap_write(rt711->regmap, 0x4c21, 0xf0);
regmap_write(rt711->regmap, 0x4d21, 0x11);
regmap_write(rt711->regmap, 0x4e21, 0x11);
regmap_write(rt711->regmap, 0x4f21, 0x01);
/* Data port arrangement */
rt711_index_write(rt711->regmap, RT711_VENDOR_REG,
RT711_TX_RX_MUX_CTL, 0x0154);
/* Set index */
rt711_index_write(rt711->regmap, RT711_VENDOR_REG,
RT711_DIGITAL_MISC_CTRL4, 0x201b);
rt711_index_write(rt711->regmap, RT711_VENDOR_REG,
RT711_COMBO_JACK_AUTO_CTL1, 0x5089);
rt711_index_write(rt711->regmap, RT711_VENDOR_REG,
RT711_VREFOUT_CTL, 0x5064);
rt711_index_write(rt711->regmap, RT711_VENDOR_REG,
RT711_INLINE_CMD_CTL, 0xd249);
/* Finish Initial Settings, set power to D3 */
regmap_write(rt711->regmap, RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
if (rt711->first_hw_init)
rt711_calibration(rt711);
else
schedule_work(&rt711->calibration_work);
/*
* if set_jack callback occurred early than io_init,
* we set up the jack detection function now
*/
if (rt711->hs_jack)
rt711_jack_init(rt711);
if (rt711->first_hw_init) {
regcache_cache_bypass(rt711->regmap, false);
regcache_mark_dirty(rt711->regmap);
} else
rt711->first_hw_init = true;
/* Mark Slave initialization complete */
rt711->hw_init = true;
pm_runtime_mark_last_busy(&slave->dev);
pm_runtime_put_autosuspend(&slave->dev);
dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
return 0;
}
MODULE_DESCRIPTION("ASoC RT711 SDW driver");
MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
MODULE_LICENSE("GPL");
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