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linux-stable/sound/soc/codecs/rt700.c
Pierre-Louis Bossart 60888ef827
ASoC: rt700-sdw: fix race condition on system suspend 
In previous commits we cancelled deferred work, but there is still a
window of time where a new interrupt could result in new deferred work
executed after the link is disabled, leading to an IO error.

This patch uses an 'disable_irq_lock' mutex to prevent new interrupts
from happening after the start of the system suspend. The choice of a
mutex v. a spinlock is mainly due to the time required to clear
interrupts, which requires a command to be transmitted by the
SoundWire host IP and acknowledged with an interrupt. The
'interrupt_callback' routine is also not meant to be called from an
interrupt context.

An additional 'disable_irq' flag prevents race conditions where the
status changes before the interrupts are disabled, but the workqueue
handling status changes is scheduled after the completion of the
system suspend. On resume the interrupts are re-enabled already by the
io_init routine so we only clear the flag.

BugLink: https://github.com/thesofproject/linux/issues/2943
Fixes: 5f2df2a458 ('ASoC: rt700: wait for the delayed work to finish when the system suspends')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210614180815.153711-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-21 13:00:43 +01:00

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// SPDX-License-Identifier: GPL-2.0
//
// rt700.c -- rt700 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/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 "rt700.h"
static int rt700_index_write(struct regmap *regmap,
unsigned int reg, unsigned int value)
{
int ret;
unsigned int addr = (RT700_PRIV_INDEX_W_H << 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 rt700_index_read(struct regmap *regmap,
unsigned int reg, unsigned int *value)
{
int ret;
unsigned int addr = (RT700_PRIV_INDEX_W_H << 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 unsigned int rt700_button_detect(struct rt700_priv *rt700)
{
unsigned int btn_type = 0, val80, val81;
int ret;
ret = rt700_index_read(rt700->regmap, RT700_IRQ_FLAG_TABLE1, &val80);
if (ret < 0)
goto read_error;
ret = rt700_index_read(rt700->regmap, RT700_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 rt700_headset_detect(struct rt700_priv *rt700)
{
unsigned int buf, loop = 0;
int ret;
unsigned int jack_status = 0, reg;
ret = rt700_index_read(rt700->regmap,
RT700_COMBO_JACK_AUTO_CTL2, &buf);
if (ret < 0)
goto io_error;
while (loop < 500 &&
(buf & RT700_COMBOJACK_AUTO_DET_STATUS) == 0) {
loop++;
usleep_range(9000, 10000);
ret = rt700_index_read(rt700->regmap,
RT700_COMBO_JACK_AUTO_CTL2, &buf);
if (ret < 0)
goto io_error;
reg = RT700_VERB_GET_PIN_SENSE | RT700_HP_OUT;
ret = regmap_read(rt700->regmap, reg, &jack_status);
if ((jack_status & (1 << 31)) == 0)
goto remove_error;
}
if (loop >= 500)
goto to_error;
if (buf & RT700_COMBOJACK_AUTO_DET_TRS)
rt700->jack_type = SND_JACK_HEADPHONE;
else if ((buf & RT700_COMBOJACK_AUTO_DET_CTIA) ||
(buf & RT700_COMBOJACK_AUTO_DET_OMTP))
rt700->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 rt700_jack_detect_handler(struct work_struct *work)
{
struct rt700_priv *rt700 =
container_of(work, struct rt700_priv, jack_detect_work.work);
int btn_type = 0, ret;
unsigned int jack_status = 0, reg;
if (!rt700->hs_jack)
return;
if (!rt700->component->card->instantiated)
return;
reg = RT700_VERB_GET_PIN_SENSE | RT700_HP_OUT;
ret = regmap_read(rt700->regmap, reg, &jack_status);
if (ret < 0)
goto io_error;
/* pin attached */
if (jack_status & (1 << 31)) {
/* jack in */
if (rt700->jack_type == 0) {
ret = rt700_headset_detect(rt700);
if (ret < 0)
return;
if (rt700->jack_type == SND_JACK_HEADSET)
btn_type = rt700_button_detect(rt700);
} else if (rt700->jack_type == SND_JACK_HEADSET) {
/* jack is already in, report button event */
btn_type = rt700_button_detect(rt700);
}
} else {
/* jack out */
rt700->jack_type = 0;
}
dev_dbg(&rt700->slave->dev,
"in %s, jack_type=0x%x\n", __func__, rt700->jack_type);
dev_dbg(&rt700->slave->dev,
"in %s, btn_type=0x%x\n", __func__, btn_type);
snd_soc_jack_report(rt700->hs_jack, rt700->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(rt700->hs_jack, rt700->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,
&rt700->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 rt700_btn_check_handler(struct work_struct *work)
{
struct rt700_priv *rt700 = container_of(work, struct rt700_priv,
jack_btn_check_work.work);
int btn_type = 0, ret;
unsigned int jack_status = 0, reg;
reg = RT700_VERB_GET_PIN_SENSE | RT700_HP_OUT;
ret = regmap_read(rt700->regmap, reg, &jack_status);
if (ret < 0)
goto io_error;
/* pin attached */
if (jack_status & (1 << 31)) {
if (rt700->jack_type == SND_JACK_HEADSET) {
/* jack is already in, report button event */
btn_type = rt700_button_detect(rt700);
}
} else {
rt700->jack_type = 0;
}
/* cbj comparator */
ret = rt700_index_read(rt700->regmap, RT700_COMBO_JACK_AUTO_CTL2, &reg);
if (ret < 0)
goto io_error;
if ((reg & 0xf0) == 0xf0)
btn_type = 0;
dev_dbg(&rt700->slave->dev,
"%s, btn_type=0x%x\n", __func__, btn_type);
snd_soc_jack_report(rt700->hs_jack, rt700->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(rt700->hs_jack, rt700->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,
&rt700->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 rt700_jack_init(struct rt700_priv *rt700)
{
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(rt700->component);
/* power on */
if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
regmap_write(rt700->regmap,
RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
if (rt700->hs_jack) {
/* Enable Jack Detection */
regmap_write(rt700->regmap,
RT700_SET_MIC2_UNSOLICITED_ENABLE, 0x82);
regmap_write(rt700->regmap,
RT700_SET_HP_UNSOLICITED_ENABLE, 0x81);
regmap_write(rt700->regmap,
RT700_SET_INLINE_UNSOLICITED_ENABLE, 0x83);
rt700_index_write(rt700->regmap, 0x10, 0x2420);
rt700_index_write(rt700->regmap, 0x19, 0x2e11);
dev_dbg(&rt700->slave->dev, "in %s enable\n", __func__);
mod_delayed_work(system_power_efficient_wq,
&rt700->jack_detect_work, msecs_to_jiffies(250));
} else {
regmap_write(rt700->regmap,
RT700_SET_MIC2_UNSOLICITED_ENABLE, 0x00);
regmap_write(rt700->regmap,
RT700_SET_HP_UNSOLICITED_ENABLE, 0x00);
regmap_write(rt700->regmap,
RT700_SET_INLINE_UNSOLICITED_ENABLE, 0x00);
dev_dbg(&rt700->slave->dev, "in %s disable\n", __func__);
}
/* power off */
if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
regmap_write(rt700->regmap,
RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
}
static int rt700_set_jack_detect(struct snd_soc_component *component,
struct snd_soc_jack *hs_jack, void *data)
{
struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
rt700->hs_jack = hs_jack;
if (!rt700->hw_init) {
dev_dbg(&rt700->slave->dev,
"%s hw_init not ready yet\n", __func__);
return 0;
}
rt700_jack_init(rt700);
return 0;
}
static void rt700_get_gain(struct rt700_priv *rt700, 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(rt700->regmap, addr_l, r_val);
/* L Channel */
val_h |= 0x20;
*l_val = (val_h << 8);
regmap_read(rt700->regmap, addr_h, l_val);
}
/* For Verb-Set Amplifier Gain (Verb ID = 3h) */
static int rt700_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 rt700_priv *rt700 = 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;
/* Can't use update bit function, so read the original value first */
addr_h = mc->reg;
addr_l = mc->rreg;
if (mc->shift == RT700_DIR_OUT_SFT) /* output */
val_h = 0x80;
else /* input */
val_h = 0x0;
rt700_get_gain(rt700, addr_h, addr_l, val_h, &read_rl, &read_ll);
/* L Channel */
if (mc->invert) {
/* for mute */
val_ll = (mc->max - ucontrol->value.integer.value[0]) << 7;
/* 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 & 0x80;
val_ll |= read_ll;
}
if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
regmap_write(rt700->regmap,
RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
/* R Channel */
if (mc->invert) {
/* for mute */
val_lr = (mc->max - ucontrol->value.integer.value[1]) << 7;
/* 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 & 0x80;
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(rt700->regmap,
addr_h, (val_h << 8 | val_ll));
regmap_write(rt700->regmap,
addr_l, (val_h << 8 | val_ll));
} else {
/* Lch*/
val_h = (1 << mc->shift) | (1 << 5);
regmap_write(rt700->regmap,
addr_h, (val_h << 8 | val_ll));
/* Rch */
val_h = (1 << mc->shift) | (1 << 4);
regmap_write(rt700->regmap,
addr_l, (val_h << 8 | val_lr));
}
/* check result */
if (mc->shift == RT700_DIR_OUT_SFT) /* output */
val_h = 0x80;
else /* input */
val_h = 0x0;
rt700_get_gain(rt700, 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(rt700->regmap,
RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
return 0;
}
static int rt700_set_amp_gain_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct rt700_priv *rt700 = 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;
addr_h = mc->reg;
addr_l = mc->rreg;
if (mc->shift == RT700_DIR_OUT_SFT) /* output */
val_h = 0x80;
else /* input */
val_h = 0x0;
rt700_get_gain(rt700, addr_h, addr_l, val_h, &read_rl, &read_ll);
if (mc->invert) {
/* for mute status */
read_ll = !((read_ll & 0x80) >> RT700_MUTE_SFT);
read_rl = !((read_rl & 0x80) >> RT700_MUTE_SFT);
} else {
/* for gain */
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 rt700_snd_controls[] = {
SOC_DOUBLE_R_EXT_TLV("DAC Front Playback Volume",
RT700_SET_GAIN_DAC1_H, RT700_SET_GAIN_DAC1_L,
RT700_DIR_OUT_SFT, 0x57, 0,
rt700_set_amp_gain_get, rt700_set_amp_gain_put, out_vol_tlv),
SOC_DOUBLE_R_EXT("ADC 08 Capture Switch",
RT700_SET_GAIN_ADC2_H, RT700_SET_GAIN_ADC2_L,
RT700_DIR_IN_SFT, 1, 1,
rt700_set_amp_gain_get, rt700_set_amp_gain_put),
SOC_DOUBLE_R_EXT("ADC 09 Capture Switch",
RT700_SET_GAIN_ADC1_H, RT700_SET_GAIN_ADC1_L,
RT700_DIR_IN_SFT, 1, 1,
rt700_set_amp_gain_get, rt700_set_amp_gain_put),
SOC_DOUBLE_R_EXT_TLV("ADC 08 Capture Volume",
RT700_SET_GAIN_ADC2_H, RT700_SET_GAIN_ADC2_L,
RT700_DIR_IN_SFT, 0x3f, 0,
rt700_set_amp_gain_get, rt700_set_amp_gain_put, in_vol_tlv),
SOC_DOUBLE_R_EXT_TLV("ADC 09 Capture Volume",
RT700_SET_GAIN_ADC1_H, RT700_SET_GAIN_ADC1_L,
RT700_DIR_IN_SFT, 0x3f, 0,
rt700_set_amp_gain_get, rt700_set_amp_gain_put, in_vol_tlv),
SOC_DOUBLE_R_EXT_TLV("AMIC Volume",
RT700_SET_GAIN_AMIC_H, RT700_SET_GAIN_AMIC_L,
RT700_DIR_IN_SFT, 3, 0,
rt700_set_amp_gain_get, rt700_set_amp_gain_put, mic_vol_tlv),
};
static int rt700_mux_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
unsigned int reg, val = 0, nid;
int ret;
if (strstr(ucontrol->id.name, "HPO Mux"))
nid = RT700_HP_OUT;
else if (strstr(ucontrol->id.name, "ADC 22 Mux"))
nid = RT700_MIXER_IN1;
else if (strstr(ucontrol->id.name, "ADC 23 Mux"))
nid = RT700_MIXER_IN2;
else
return -EINVAL;
/* vid = 0xf01 */
reg = RT700_VERB_SET_CONNECT_SEL | nid;
ret = regmap_read(rt700->regmap, reg, &val);
if (ret < 0)
return ret;
ucontrol->value.enumerated.item[0] = val;
return 0;
}
static int rt700_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 rt700_priv *rt700 = 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, "HPO Mux"))
nid = RT700_HP_OUT;
else if (strstr(ucontrol->id.name, "ADC 22 Mux"))
nid = RT700_MIXER_IN1;
else if (strstr(ucontrol->id.name, "ADC 23 Mux"))
nid = RT700_MIXER_IN2;
else
return -EINVAL;
/* Verb ID = 0x701h */
val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
reg = RT700_VERB_SET_CONNECT_SEL | nid;
ret = regmap_read(rt700->regmap, reg, &val2);
if (ret < 0)
return ret;
if (val == val2)
change = 0;
else
change = 1;
if (change) {
reg = RT700_VERB_SET_CONNECT_SEL | nid;
regmap_write(rt700->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(
rt700_adc22_enum, SND_SOC_NOPM, 0, adc_mux_text);
static SOC_ENUM_SINGLE_DECL(
rt700_adc23_enum, SND_SOC_NOPM, 0, adc_mux_text);
static const struct snd_kcontrol_new rt700_adc22_mux =
SOC_DAPM_ENUM_EXT("ADC 22 Mux", rt700_adc22_enum,
rt700_mux_get, rt700_mux_put);
static const struct snd_kcontrol_new rt700_adc23_mux =
SOC_DAPM_ENUM_EXT("ADC 23 Mux", rt700_adc23_enum,
rt700_mux_get, rt700_mux_put);
static const char * const out_mux_text[] = {
"Front",
"Surround",
};
static SOC_ENUM_SINGLE_DECL(
rt700_hp_enum, SND_SOC_NOPM, 0, out_mux_text);
static const struct snd_kcontrol_new rt700_hp_mux =
SOC_DAPM_ENUM_EXT("HP Mux", rt700_hp_enum,
rt700_mux_get, rt700_mux_put);
static int rt700_dac_front_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_DAC1, 0x10);
break;
case SND_SOC_DAPM_PRE_PMD:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_DAC1, 0x00);
break;
}
return 0;
}
static int rt700_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_DAC2, 0x10);
break;
case SND_SOC_DAPM_PRE_PMD:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_DAC2, 0x00);
break;
}
return 0;
}
static int rt700_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_ADC1, 0x10);
break;
case SND_SOC_DAPM_PRE_PMD:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_ADC1, 0x00);
break;
}
return 0;
}
static int rt700_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_ADC2, 0x10);
break;
case SND_SOC_DAPM_PRE_PMD:
regmap_write(rt700->regmap,
RT700_SET_STREAMID_ADC2, 0x00);
break;
}
return 0;
}
static int rt700_hpo_mux_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
unsigned int val_h = (1 << RT700_DIR_OUT_SFT) | (0x3 << 4);
unsigned int val_l;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
val_l = 0x00;
regmap_write(rt700->regmap,
RT700_SET_GAIN_HP_H, (val_h << 8 | val_l));
break;
case SND_SOC_DAPM_PRE_PMD:
val_l = (1 << RT700_MUTE_SFT);
regmap_write(rt700->regmap,
RT700_SET_GAIN_HP_H, (val_h << 8 | val_l));
usleep_range(50000, 55000);
break;
}
return 0;
}
static int rt700_spk_pga_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
unsigned int val_h = (1 << RT700_DIR_OUT_SFT) | (0x3 << 4);
unsigned int val_l;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
val_l = 0x00;
regmap_write(rt700->regmap,
RT700_SET_GAIN_SPK_H, (val_h << 8 | val_l));
break;
case SND_SOC_DAPM_PRE_PMD:
val_l = (1 << RT700_MUTE_SFT);
regmap_write(rt700->regmap,
RT700_SET_GAIN_SPK_H, (val_h << 8 | val_l));
break;
}
return 0;
}
static const struct snd_soc_dapm_widget rt700_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("HP"),
SND_SOC_DAPM_OUTPUT("SPK"),
SND_SOC_DAPM_INPUT("DMIC1"),
SND_SOC_DAPM_INPUT("DMIC2"),
SND_SOC_DAPM_INPUT("MIC2"),
SND_SOC_DAPM_INPUT("LINE1"),
SND_SOC_DAPM_INPUT("LINE2"),
SND_SOC_DAPM_DAC_E("DAC Front", NULL, SND_SOC_NOPM, 0, 0,
rt700_dac_front_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_DAC_E("DAC Surround", NULL, SND_SOC_NOPM, 0, 0,
rt700_dac_surround_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_MUX_E("HPO Mux", SND_SOC_NOPM, 0, 0, &rt700_hp_mux,
rt700_hpo_mux_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_E("SPK PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
rt700_spk_pga_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_ADC_E("ADC 09", NULL, SND_SOC_NOPM, 0, 0,
rt700_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,
rt700_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,
&rt700_adc22_mux),
SND_SOC_DAPM_MUX("ADC 23 Mux", SND_SOC_NOPM, 0, 0,
&rt700_adc23_mux),
SND_SOC_DAPM_AIF_IN("DP1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
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 rt700_audio_map[] = {
{"DAC Front", NULL, "DP1RX"},
{"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"},
{"HPO Mux", "Front", "DAC Front"},
{"HPO Mux", "Surround", "DAC Surround"},
{"HP", NULL, "HPO Mux"},
{"SPK PGA", NULL, "DAC Front"},
{"SPK", NULL, "SPK PGA"},
};
static int rt700_probe(struct snd_soc_component *component)
{
struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
rt700->component = component;
return 0;
}
static int rt700_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
switch (level) {
case SND_SOC_BIAS_PREPARE:
if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
regmap_write(rt700->regmap,
RT700_SET_AUDIO_POWER_STATE,
AC_PWRST_D0);
}
break;
case SND_SOC_BIAS_STANDBY:
regmap_write(rt700->regmap,
RT700_SET_AUDIO_POWER_STATE,
AC_PWRST_D3);
break;
default:
break;
}
dapm->bias_level = level;
return 0;
}
static const struct snd_soc_component_driver soc_codec_dev_rt700 = {
.probe = rt700_probe,
.set_bias_level = rt700_set_bias_level,
.controls = rt700_snd_controls,
.num_controls = ARRAY_SIZE(rt700_snd_controls),
.dapm_widgets = rt700_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(rt700_dapm_widgets),
.dapm_routes = rt700_audio_map,
.num_dapm_routes = ARRAY_SIZE(rt700_audio_map),
.set_jack = rt700_set_jack_detect,
};
static int rt700_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
int direction)
{
struct sdw_stream_data *stream;
if (!sdw_stream)
return 0;
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
if (!stream)
return -ENOMEM;
stream->sdw_stream = sdw_stream;
/* Use tx_mask or rx_mask to configure stream tag and set dma_data */
if (direction == SNDRV_PCM_STREAM_PLAYBACK)
dai->playback_dma_data = stream;
else
dai->capture_dma_data = stream;
return 0;
}
static void rt700_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sdw_stream_data *stream;
stream = snd_soc_dai_get_dma_data(dai, substream);
snd_soc_dai_set_dma_data(dai, substream, NULL);
kfree(stream);
}
static int rt700_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 rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
struct sdw_stream_config stream_config;
struct sdw_port_config port_config;
enum sdw_data_direction direction;
struct sdw_stream_data *stream;
int retval, port, num_channels;
unsigned int val = 0;
dev_dbg(dai->dev, "%s %s", __func__, dai->name);
stream = snd_soc_dai_get_dma_data(dai, substream);
if (!stream)
return -EINVAL;
if (!rt700->slave)
return -EINVAL;
/* SoundWire specific configuration */
/* This code assumes port 1 for playback and port 2 for capture */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
direction = SDW_DATA_DIR_RX;
port = 1;
} else {
direction = SDW_DATA_DIR_TX;
port = 2;
}
switch (dai->id) {
case RT700_AIF1:
break;
case RT700_AIF2:
port += 2;
break;
default:
dev_err(component->dev, "Invalid DAI id %d\n", dai->id);
return -EINVAL;
}
stream_config.frame_rate = params_rate(params);
stream_config.ch_count = params_channels(params);
stream_config.bps = snd_pcm_format_width(params_format(params));
stream_config.direction = direction;
num_channels = params_channels(params);
port_config.ch_mask = (1 << (num_channels)) - 1;
port_config.num = port;
retval = sdw_stream_add_slave(rt700->slave, &stream_config,
&port_config, 1, stream->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(rt700->regmap, RT700_DAC_FORMAT_H, val);
regmap_write(rt700->regmap, RT700_ADC_FORMAT_H, val);
return retval;
}
static int rt700_pcm_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
struct sdw_stream_data *stream =
snd_soc_dai_get_dma_data(dai, substream);
if (!rt700->slave)
return -EINVAL;
sdw_stream_remove_slave(rt700->slave, stream->sdw_stream);
return 0;
}
#define RT700_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
#define RT700_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 rt700_ops = {
.hw_params = rt700_pcm_hw_params,
.hw_free = rt700_pcm_hw_free,
.set_sdw_stream = rt700_set_sdw_stream,
.shutdown = rt700_shutdown,
};
static struct snd_soc_dai_driver rt700_dai[] = {
{
.name = "rt700-aif1",
.id = RT700_AIF1,
.playback = {
.stream_name = "DP1 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT700_STEREO_RATES,
.formats = RT700_FORMATS,
},
.capture = {
.stream_name = "DP2 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT700_STEREO_RATES,
.formats = RT700_FORMATS,
},
.ops = &rt700_ops,
},
{
.name = "rt700-aif2",
.id = RT700_AIF2,
.playback = {
.stream_name = "DP3 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT700_STEREO_RATES,
.formats = RT700_FORMATS,
},
.capture = {
.stream_name = "DP4 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT700_STEREO_RATES,
.formats = RT700_FORMATS,
},
.ops = &rt700_ops,
},
};
/* Bus clock frequency */
#define RT700_CLK_FREQ_9600000HZ 9600000
#define RT700_CLK_FREQ_12000000HZ 12000000
#define RT700_CLK_FREQ_6000000HZ 6000000
#define RT700_CLK_FREQ_4800000HZ 4800000
#define RT700_CLK_FREQ_2400000HZ 2400000
#define RT700_CLK_FREQ_12288000HZ 12288000
int rt700_clock_config(struct device *dev)
{
struct rt700_priv *rt700 = dev_get_drvdata(dev);
unsigned int clk_freq, value;
clk_freq = (rt700->params.curr_dr_freq >> 1);
switch (clk_freq) {
case RT700_CLK_FREQ_12000000HZ:
value = 0x0;
break;
case RT700_CLK_FREQ_6000000HZ:
value = 0x1;
break;
case RT700_CLK_FREQ_9600000HZ:
value = 0x2;
break;
case RT700_CLK_FREQ_4800000HZ:
value = 0x3;
break;
case RT700_CLK_FREQ_2400000HZ:
value = 0x4;
break;
case RT700_CLK_FREQ_12288000HZ:
value = 0x5;
break;
default:
return -EINVAL;
}
regmap_write(rt700->regmap, 0xe0, value);
regmap_write(rt700->regmap, 0xf0, value);
dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
return 0;
}
int rt700_init(struct device *dev, struct regmap *sdw_regmap,
struct regmap *regmap, struct sdw_slave *slave)
{
struct rt700_priv *rt700;
int ret;
rt700 = devm_kzalloc(dev, sizeof(*rt700), GFP_KERNEL);
if (!rt700)
return -ENOMEM;
dev_set_drvdata(dev, rt700);
rt700->slave = slave;
rt700->sdw_regmap = sdw_regmap;
rt700->regmap = regmap;
mutex_init(&rt700->disable_irq_lock);
/*
* Mark hw_init to false
* HW init will be performed when device reports present
*/
rt700->hw_init = false;
rt700->first_hw_init = false;
ret = devm_snd_soc_register_component(dev,
&soc_codec_dev_rt700,
rt700_dai,
ARRAY_SIZE(rt700_dai));
dev_dbg(&slave->dev, "%s\n", __func__);
return ret;
}
int rt700_io_init(struct device *dev, struct sdw_slave *slave)
{
struct rt700_priv *rt700 = dev_get_drvdata(dev);
rt700->disable_irq = false;
if (rt700->hw_init)
return 0;
if (rt700->first_hw_init) {
regcache_cache_only(rt700->regmap, false);
regcache_cache_bypass(rt700->regmap, true);
}
/*
* PM runtime is only enabled when a Slave reports as Attached
*/
if (!rt700->first_hw_init) {
/* set autosuspend parameters */
pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
pm_runtime_use_autosuspend(&slave->dev);
/* update count of parent 'active' children */
pm_runtime_set_active(&slave->dev);
/* make sure the device does not suspend immediately */
pm_runtime_mark_last_busy(&slave->dev);
pm_runtime_enable(&slave->dev);
}
pm_runtime_get_noresume(&slave->dev);
/* reset */
regmap_write(rt700->regmap, 0xff01, 0x0000);
regmap_write(rt700->regmap, 0x7520, 0x001a);
regmap_write(rt700->regmap, 0x7420, 0xc003);
/* power on */
regmap_write(rt700->regmap, RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
/* Set Pin Widget */
regmap_write(rt700->regmap, RT700_SET_PIN_HP, 0x40);
regmap_write(rt700->regmap, RT700_SET_PIN_SPK, 0x40);
regmap_write(rt700->regmap, RT700_SET_EAPD_SPK, RT700_EAPD_HIGH);
regmap_write(rt700->regmap, RT700_SET_PIN_DMIC1, 0x20);
regmap_write(rt700->regmap, RT700_SET_PIN_DMIC2, 0x20);
regmap_write(rt700->regmap, RT700_SET_PIN_MIC2, 0x20);
/* Set Configuration Default */
regmap_write(rt700->regmap, 0x4f12, 0x91);
regmap_write(rt700->regmap, 0x4e12, 0xd6);
regmap_write(rt700->regmap, 0x4d12, 0x11);
regmap_write(rt700->regmap, 0x4c12, 0x20);
regmap_write(rt700->regmap, 0x4f13, 0x91);
regmap_write(rt700->regmap, 0x4e13, 0xd6);
regmap_write(rt700->regmap, 0x4d13, 0x11);
regmap_write(rt700->regmap, 0x4c13, 0x21);
regmap_write(rt700->regmap, 0x4f19, 0x02);
regmap_write(rt700->regmap, 0x4e19, 0xa1);
regmap_write(rt700->regmap, 0x4d19, 0x90);
regmap_write(rt700->regmap, 0x4c19, 0x80);
/* Enable Line2 */
regmap_write(rt700->regmap, 0x371b, 0x40);
regmap_write(rt700->regmap, 0x731b, 0xb0);
regmap_write(rt700->regmap, 0x839b, 0x00);
/* Set index */
rt700_index_write(rt700->regmap, 0x4a, 0x201b);
rt700_index_write(rt700->regmap, 0x45, 0x5089);
rt700_index_write(rt700->regmap, 0x6b, 0x5064);
rt700_index_write(rt700->regmap, 0x48, 0xd249);
/* Finish Initial Settings, set power to D3 */
regmap_write(rt700->regmap, RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
if (!rt700->first_hw_init) {
INIT_DELAYED_WORK(&rt700->jack_detect_work,
rt700_jack_detect_handler);
INIT_DELAYED_WORK(&rt700->jack_btn_check_work,
rt700_btn_check_handler);
}
/*
* if set_jack callback occurred early than io_init,
* we set up the jack detection function now
*/
if (rt700->hs_jack)
rt700_jack_init(rt700);
if (rt700->first_hw_init) {
regcache_cache_bypass(rt700->regmap, false);
regcache_mark_dirty(rt700->regmap);
} else
rt700->first_hw_init = true;
/* Mark Slave initialization complete */
rt700->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 RT700 driver SDW");
MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
MODULE_LICENSE("GPL v2");
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