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kernel/sound/soc/codecs/cs42l43-jack.c

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// SPDX-License-Identifier: GPL-2.0
//
// CS42L43 CODEC driver jack handling
//
// Copyright (C) 2022-2023 Cirrus Logic, Inc. and
// Cirrus Logic International Semiconductor Ltd.
#include <linux/build_bug.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/irq.h>
#include <linux/jiffies.h>
#include <linux/mfd/cs42l43.h>
#include <linux/mfd/cs42l43-regs.h>
#include <linux/mutex.h>
#include <linux/pm_runtime.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/time.h>
#include <linux/workqueue.h>
#include <sound/control.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc-component.h>
#include <sound/soc-jack.h>
#include <sound/soc.h>
#include "cs42l43.h"
static const unsigned int cs42l43_accdet_us[] = {
20, 100, 1000, 10000, 50000, 75000, 100000, 200000,
};
static const unsigned int cs42l43_accdet_db_ms[] = {
0, 125, 250, 500, 750, 1000, 1250, 1500,
};
static const unsigned int cs42l43_accdet_ramp_ms[] = { 10, 40, 90, 170 };
static const unsigned int cs42l43_accdet_bias_sense[] = {
14, 24, 43, 52, 61, 71, 90, 99, 0,
};
static int cs42l43_find_index(struct cs42l43_codec *priv, const char * const prop,
unsigned int defval, unsigned int *val,
const unsigned int *values, const int nvalues)
{
struct cs42l43 *cs42l43 = priv->core;
int i, ret;
ret = device_property_read_u32(cs42l43->dev, prop, &defval);
if (ret != -EINVAL && ret < 0) {
dev_err(priv->dev, "Property %s malformed: %d\n", prop, ret);
return ret;
}
if (val)
*val = defval;
for (i = 0; i < nvalues; i++)
if (defval == values[i])
return i;
dev_err(priv->dev, "Invalid value for property %s: %d\n", prop, defval);
return -EINVAL;
}
int cs42l43_set_jack(struct snd_soc_component *component,
struct snd_soc_jack *jack, void *d)
{
struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
struct cs42l43 *cs42l43 = priv->core;
/* This tip sense invert is always set, HW wants an inverted signal */
unsigned int tip_deb = CS42L43_TIPSENSE_INV_MASK;
unsigned int hs2 = 0x2 << CS42L43_HSDET_MODE_SHIFT;
unsigned int autocontrol = 0, pdncntl = 0;
int ret;
dev_dbg(priv->dev, "Configure accessory detect\n");
ret = pm_runtime_resume_and_get(priv->dev);
if (ret) {
dev_err(priv->dev, "Failed to resume for jack config: %d\n", ret);
return ret;
}
mutex_lock(&priv->jack_lock);
priv->jack_hp = jack;
if (!jack)
goto done;
ret = device_property_count_u32(cs42l43->dev, "cirrus,buttons-ohms");
if (ret != -EINVAL) {
if (ret < 0) {
dev_err(priv->dev, "Property cirrus,buttons-ohms malformed: %d\n",
ret);
goto error;
}
if (ret > CS42L43_N_BUTTONS) {
ret = -EINVAL;
dev_err(priv->dev, "Property cirrus,buttons-ohms too many entries\n");
goto error;
}
ret = device_property_read_u32_array(cs42l43->dev, "cirrus,buttons-ohms",
priv->buttons, ret);
if (ret < 0) {
dev_err(priv->dev, "Property cirrus,button-ohms malformed: %d\n",
ret);
goto error;
}
} else {
priv->buttons[0] = 70;
priv->buttons[1] = 185;
priv->buttons[2] = 355;
priv->buttons[3] = 735;
}
ret = cs42l43_find_index(priv, "cirrus,detect-us", 50000, &priv->detect_us,
cs42l43_accdet_us, ARRAY_SIZE(cs42l43_accdet_us));
if (ret < 0)
goto error;
hs2 |= ret << CS42L43_AUTO_HSDET_TIME_SHIFT;
priv->bias_low = device_property_read_bool(cs42l43->dev, "cirrus,bias-low");
ret = cs42l43_find_index(priv, "cirrus,bias-ramp-ms", 170,
&priv->bias_ramp_ms, cs42l43_accdet_ramp_ms,
ARRAY_SIZE(cs42l43_accdet_ramp_ms));
if (ret < 0)
goto error;
hs2 |= ret << CS42L43_HSBIAS_RAMP_SHIFT;
ret = cs42l43_find_index(priv, "cirrus,bias-sense-microamp", 14,
&priv->bias_sense_ua, cs42l43_accdet_bias_sense,
ARRAY_SIZE(cs42l43_accdet_bias_sense));
if (ret < 0)
goto error;
if (priv->bias_sense_ua)
autocontrol |= ret << CS42L43_HSBIAS_SENSE_TRIP_SHIFT;
if (!device_property_read_bool(cs42l43->dev, "cirrus,button-automute"))
autocontrol |= CS42L43_S0_AUTO_ADCMUTE_DISABLE_MASK;
ret = device_property_read_u32(cs42l43->dev, "cirrus,tip-debounce-ms",
&priv->tip_debounce_ms);
if (ret < 0 && ret != -EINVAL) {
dev_err(priv->dev, "Property cirrus,tip-debounce-ms malformed: %d\n", ret);
goto error;
}
/* This tip sense invert is set normally, as TIPSENSE_INV already inverted */
if (device_property_read_bool(cs42l43->dev, "cirrus,tip-invert"))
autocontrol |= 0x1 << CS42L43_JACKDET_INV_SHIFT;
if (device_property_read_bool(cs42l43->dev, "cirrus,tip-disable-pullup"))
autocontrol |= 0x1 << CS42L43_JACKDET_MODE_SHIFT;
else
autocontrol |= 0x3 << CS42L43_JACKDET_MODE_SHIFT;
ret = cs42l43_find_index(priv, "cirrus,tip-fall-db-ms", 500,
NULL, cs42l43_accdet_db_ms,
ARRAY_SIZE(cs42l43_accdet_db_ms));
if (ret < 0)
goto error;
tip_deb |= ret << CS42L43_TIPSENSE_FALLING_DB_TIME_SHIFT;
ret = cs42l43_find_index(priv, "cirrus,tip-rise-db-ms", 500,
NULL, cs42l43_accdet_db_ms,
ARRAY_SIZE(cs42l43_accdet_db_ms));
if (ret < 0)
goto error;
tip_deb |= ret << CS42L43_TIPSENSE_RISING_DB_TIME_SHIFT;
if (device_property_read_bool(cs42l43->dev, "cirrus,use-ring-sense")) {
unsigned int ring_deb = 0;
priv->use_ring_sense = true;
/* HW wants an inverted signal, so invert the invert */
if (!device_property_read_bool(cs42l43->dev, "cirrus,ring-invert"))
ring_deb |= CS42L43_RINGSENSE_INV_MASK;
if (!device_property_read_bool(cs42l43->dev,
"cirrus,ring-disable-pullup"))
ring_deb |= CS42L43_RINGSENSE_PULLUP_PDNB_MASK;
ret = cs42l43_find_index(priv, "cirrus,ring-fall-db-ms", 500,
NULL, cs42l43_accdet_db_ms,
ARRAY_SIZE(cs42l43_accdet_db_ms));
if (ret < 0)
goto error;
ring_deb |= ret << CS42L43_RINGSENSE_FALLING_DB_TIME_SHIFT;
ret = cs42l43_find_index(priv, "cirrus,ring-rise-db-ms", 500,
NULL, cs42l43_accdet_db_ms,
ARRAY_SIZE(cs42l43_accdet_db_ms));
if (ret < 0)
goto error;
ring_deb |= ret << CS42L43_RINGSENSE_RISING_DB_TIME_SHIFT;
pdncntl |= CS42L43_RING_SENSE_EN_MASK;
regmap_update_bits(cs42l43->regmap, CS42L43_RINGSENSE_DEB_CTRL,
CS42L43_RINGSENSE_INV_MASK |
CS42L43_RINGSENSE_PULLUP_PDNB_MASK |
CS42L43_RINGSENSE_FALLING_DB_TIME_MASK |
CS42L43_RINGSENSE_RISING_DB_TIME_MASK,
ring_deb);
}
regmap_update_bits(cs42l43->regmap, CS42L43_TIPSENSE_DEB_CTRL,
CS42L43_TIPSENSE_INV_MASK |
CS42L43_TIPSENSE_FALLING_DB_TIME_MASK |
CS42L43_TIPSENSE_RISING_DB_TIME_MASK, tip_deb);
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HSBIAS_RAMP_MASK | CS42L43_HSDET_MODE_MASK |
CS42L43_AUTO_HSDET_TIME_MASK, hs2);
done:
ret = 0;
regmap_update_bits(cs42l43->regmap, CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
CS42L43_JACKDET_MODE_MASK | CS42L43_S0_AUTO_ADCMUTE_DISABLE_MASK |
CS42L43_HSBIAS_SENSE_TRIP_MASK, autocontrol);
regmap_update_bits(cs42l43->regmap, CS42L43_PDNCNTL,
CS42L43_RING_SENSE_EN_MASK, pdncntl);
dev_dbg(priv->dev, "Successfully configured accessory detect\n");
error:
mutex_unlock(&priv->jack_lock);
pm_runtime_mark_last_busy(priv->dev);
pm_runtime_put_autosuspend(priv->dev);
return ret;
}
static void cs42l43_start_hs_bias(struct cs42l43_codec *priv, bool type_detect)
{
struct cs42l43 *cs42l43 = priv->core;
unsigned int val = 0x3 << CS42L43_HSBIAS_MODE_SHIFT;
dev_dbg(priv->dev, "Start headset bias\n");
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HS_CLAMP_DISABLE_MASK, CS42L43_HS_CLAMP_DISABLE_MASK);
if (!type_detect) {
if (priv->bias_low)
val = 0x2 << CS42L43_HSBIAS_MODE_SHIFT;
if (priv->bias_sense_ua)
regmap_update_bits(cs42l43->regmap,
CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
CS42L43_HSBIAS_SENSE_EN_MASK |
CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
CS42L43_HSBIAS_SENSE_EN_MASK |
CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
}
regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
CS42L43_HSBIAS_MODE_MASK, val);
msleep(priv->bias_ramp_ms);
}
static void cs42l43_stop_hs_bias(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
dev_dbg(priv->dev, "Stop headset bias\n");
regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
CS42L43_HSBIAS_MODE_MASK, 0x1 << CS42L43_HSBIAS_MODE_SHIFT);
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HS_CLAMP_DISABLE_MASK, 0);
if (priv->bias_sense_ua) {
regmap_update_bits(cs42l43->regmap,
CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
CS42L43_HSBIAS_SENSE_EN_MASK |
CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
}
}
irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data)
{
struct cs42l43_codec *priv = data;
queue_delayed_work(system_wq, &priv->bias_sense_timeout,
msecs_to_jiffies(1000));
return IRQ_HANDLED;
}
#define CS42L43_JACK_PRESENT 0x3
#define CS42L43_JACK_ABSENT 0x0
#define CS42L43_JACK_OPTICAL (SND_JACK_MECHANICAL | SND_JACK_AVOUT)
#define CS42L43_JACK_HEADPHONE (SND_JACK_MECHANICAL | SND_JACK_HEADPHONE)
#define CS42L43_JACK_HEADSET (SND_JACK_MECHANICAL | SND_JACK_HEADSET)
#define CS42L43_JACK_LINEOUT (SND_JACK_MECHANICAL | SND_JACK_LINEOUT)
#define CS42L43_JACK_LINEIN (SND_JACK_MECHANICAL | SND_JACK_LINEIN)
#define CS42L43_JACK_EXTENSION (SND_JACK_MECHANICAL)
#define CS42L43_JACK_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 | \
SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5)
static inline bool cs42l43_jack_present(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
unsigned int sts = 0;
regmap_read(cs42l43->regmap, CS42L43_TIP_RING_SENSE_INTERRUPT_STATUS, &sts);
sts = (sts >> CS42L43_TIPSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
return sts == CS42L43_JACK_PRESENT;
}
static void cs42l43_start_button_detect(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
unsigned int val = 0x3 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
dev_dbg(priv->dev, "Start button detect\n");
priv->button_detect_running = true;
if (priv->bias_low)
val = 0x1 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
CS42L43_BUTTON_DETECT_MODE_MASK |
CS42L43_MIC_LVL_DET_DISABLE_MASK, val);
}
static void cs42l43_stop_button_detect(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
dev_dbg(priv->dev, "Stop button detect\n");
regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
CS42L43_BUTTON_DETECT_MODE_MASK |
CS42L43_MIC_LVL_DET_DISABLE_MASK,
CS42L43_MIC_LVL_DET_DISABLE_MASK);
priv->button_detect_running = false;
}
#define CS42L43_BUTTON_COMB_MAX 512
#define CS42L43_BUTTON_ROUT 2210
void cs42l43_button_press_work(struct work_struct *work)
{
struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
button_press_work.work);
struct cs42l43 *cs42l43 = priv->core;
unsigned int buttons = 0;
unsigned int val = 0;
int i, ret;
ret = pm_runtime_resume_and_get(priv->dev);
if (ret) {
dev_err(priv->dev, "Failed to resume for button press: %d\n", ret);
return;
}
mutex_lock(&priv->jack_lock);
if (!priv->button_detect_running) {
dev_dbg(priv->dev, "Spurious button press IRQ\n");
goto error;
}
regmap_read(cs42l43->regmap, CS42L43_DETECT_STATUS_1, &val);
/* Bail if jack removed, the button is irrelevant and likely invalid */
if (!cs42l43_jack_present(priv)) {
dev_dbg(priv->dev, "Button ignored due to removal\n");
goto error;
}
if (val & CS42L43_HSBIAS_CLAMP_STS_MASK) {
dev_dbg(priv->dev, "Button ignored due to bias sense\n");
goto error;
}
val = (val & CS42L43_HSDET_DC_STS_MASK) >> CS42L43_HSDET_DC_STS_SHIFT;
val = ((CS42L43_BUTTON_COMB_MAX << 20) / (val + 1)) - (1 << 20);
if (val)
val = (CS42L43_BUTTON_ROUT << 20) / val;
else
val = UINT_MAX;
for (i = 0; i < CS42L43_N_BUTTONS; i++) {
if (val < priv->buttons[i]) {
buttons = SND_JACK_BTN_0 >> i;
dev_dbg(priv->dev, "Detected button %d at %d Ohms\n", i, val);
break;
}
}
if (!buttons)
dev_dbg(priv->dev, "Unrecognised button: %d Ohms\n", val);
snd_soc_jack_report(priv->jack_hp, buttons, CS42L43_JACK_BUTTONS);
error:
mutex_unlock(&priv->jack_lock);
pm_runtime_mark_last_busy(priv->dev);
pm_runtime_put_autosuspend(priv->dev);
}
irqreturn_t cs42l43_button_press(int irq, void *data)
{
struct cs42l43_codec *priv = data;
// Wait for 2 full cycles of comb filter to ensure good reading
queue_delayed_work(system_wq, &priv->button_press_work,
msecs_to_jiffies(20));
return IRQ_HANDLED;
}
void cs42l43_button_release_work(struct work_struct *work)
{
struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
button_release_work);
int ret;
ret = pm_runtime_resume_and_get(priv->dev);
if (ret) {
dev_err(priv->dev, "Failed to resume for button release: %d\n", ret);
return;
}
mutex_lock(&priv->jack_lock);
if (priv->button_detect_running) {
dev_dbg(priv->dev, "Button release IRQ\n");
snd_soc_jack_report(priv->jack_hp, 0, CS42L43_JACK_BUTTONS);
} else {
dev_dbg(priv->dev, "Spurious button release IRQ\n");
}
mutex_unlock(&priv->jack_lock);
pm_runtime_mark_last_busy(priv->dev);
pm_runtime_put_autosuspend(priv->dev);
}
irqreturn_t cs42l43_button_release(int irq, void *data)
{
struct cs42l43_codec *priv = data;
queue_work(system_wq, &priv->button_release_work);
return IRQ_HANDLED;
}
void cs42l43_bias_sense_timeout(struct work_struct *work)
{
struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
bias_sense_timeout.work);
struct cs42l43 *cs42l43 = priv->core;
int ret;
ret = pm_runtime_resume_and_get(priv->dev);
if (ret) {
dev_err(priv->dev, "Failed to resume for bias sense: %d\n", ret);
return;
}
mutex_lock(&priv->jack_lock);
if (cs42l43_jack_present(priv) && priv->button_detect_running) {
dev_dbg(priv->dev, "Bias sense timeout out, restore bias\n");
regmap_update_bits(cs42l43->regmap,
CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
regmap_update_bits(cs42l43->regmap,
CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
}
mutex_unlock(&priv->jack_lock);
pm_runtime_mark_last_busy(priv->dev);
pm_runtime_put_autosuspend(priv->dev);
}
static void cs42l43_start_load_detect(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
dev_dbg(priv->dev, "Start load detect\n");
snd_soc_dapm_mutex_lock(snd_soc_component_get_dapm(priv->component));
priv->load_detect_running = true;
if (priv->hp_ena && !priv->hp_ilimited) {
unsigned long time_left;
reinit_completion(&priv->hp_shutdown);
regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN8,
CS42L43_HP_EN_MASK, 0);
time_left = wait_for_completion_timeout(&priv->hp_shutdown,
msecs_to_jiffies(CS42L43_HP_TIMEOUT_MS));
if (!time_left)
dev_err(priv->dev, "Load detect HP power down timed out\n");
}
regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN3,
CS42L43_ADC1_EN_MASK | CS42L43_ADC2_EN_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG2, CS42L43_HP_HPF_EN_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
CS42L43_HSBIAS_MODE_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_CTRL,
CS42L43_ADPTPWR_MODE_MASK, 0x4 << CS42L43_ADPTPWR_MODE_SHIFT);
regmap_update_bits(cs42l43->regmap, CS42L43_PGAVOL,
CS42L43_HP_DIG_VOL_RAMP_MASK | CS42L43_HP_ANA_VOL_RAMP_MASK, 0x6);
regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG1,
CS42L43_HP_MSTR_VOL_CTRL_EN_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HS_CLAMP_DISABLE_MASK, CS42L43_HS_CLAMP_DISABLE_MASK);
regmap_update_bits(cs42l43->regmap, CS42L43_LOADDETENA,
CS42L43_HPLOAD_DET_EN_MASK,
CS42L43_HPLOAD_DET_EN_MASK);
snd_soc_dapm_mutex_unlock(snd_soc_component_get_dapm(priv->component));
}
static void cs42l43_stop_load_detect(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
dev_dbg(priv->dev, "Stop load detect\n");
snd_soc_dapm_mutex_lock(snd_soc_component_get_dapm(priv->component));
regmap_update_bits(cs42l43->regmap, CS42L43_LOADDETENA,
CS42L43_HPLOAD_DET_EN_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HS_CLAMP_DISABLE_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG1,
CS42L43_HP_MSTR_VOL_CTRL_EN_MASK,
CS42L43_HP_MSTR_VOL_CTRL_EN_MASK);
regmap_update_bits(cs42l43->regmap, CS42L43_PGAVOL,
CS42L43_HP_DIG_VOL_RAMP_MASK | CS42L43_HP_ANA_VOL_RAMP_MASK,
0x4 << CS42L43_HP_DIG_VOL_RAMP_SHIFT);
regmap_update_bits(cs42l43->regmap, CS42L43_CTRL,
CS42L43_ADPTPWR_MODE_MASK, 0x7 << CS42L43_ADPTPWR_MODE_SHIFT);
regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
CS42L43_HSBIAS_MODE_MASK, 0x1 << CS42L43_HSBIAS_MODE_SHIFT);
regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG2,
CS42L43_HP_HPF_EN_MASK, CS42L43_HP_HPF_EN_MASK);
regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN3,
CS42L43_ADC1_EN_MASK | CS42L43_ADC2_EN_MASK,
priv->adc_ena);
if (priv->hp_ena && !priv->hp_ilimited) {
unsigned long time_left;
reinit_completion(&priv->hp_startup);
regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN8,
CS42L43_HP_EN_MASK, priv->hp_ena);
time_left = wait_for_completion_timeout(&priv->hp_startup,
msecs_to_jiffies(CS42L43_HP_TIMEOUT_MS));
if (!time_left)
dev_err(priv->dev, "Load detect HP restore timed out\n");
}
priv->load_detect_running = false;
snd_soc_dapm_mutex_unlock(snd_soc_component_get_dapm(priv->component));
}
static int cs42l43_run_load_detect(struct cs42l43_codec *priv, bool mic)
{
struct cs42l43 *cs42l43 = priv->core;
unsigned int val = 0;
unsigned long time_left;
reinit_completion(&priv->load_detect);
cs42l43_start_load_detect(priv);
time_left = wait_for_completion_timeout(&priv->load_detect,
msecs_to_jiffies(CS42L43_LOAD_TIMEOUT_MS));
cs42l43_stop_load_detect(priv);
if (!time_left)
return -ETIMEDOUT;
regmap_read(cs42l43->regmap, CS42L43_LOADDETRESULTS, &val);
dev_dbg(priv->dev, "Headphone load detect: 0x%x\n", val);
/* Bail if jack removed, the load is irrelevant and likely invalid */
if (!cs42l43_jack_present(priv))
return -ENODEV;
if (mic) {
cs42l43_start_hs_bias(priv, false);
cs42l43_start_button_detect(priv);
return CS42L43_JACK_HEADSET;
}
switch (val & CS42L43_AMP3_RES_DET_MASK) {
case 0x0: // low impedance
case 0x1: // high impedance
return CS42L43_JACK_HEADPHONE;
case 0x2: // lineout
case 0x3: // Open circuit
return CS42L43_JACK_LINEOUT;
default:
return -EINVAL;
}
}
static int cs42l43_run_type_detect(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
int timeout_ms = ((2 * priv->detect_us) / USEC_PER_MSEC) + 200;
unsigned int type = 0xff;
unsigned long time_left;
reinit_completion(&priv->type_detect);
cs42l43_start_hs_bias(priv, true);
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HSDET_MODE_MASK, 0x3 << CS42L43_HSDET_MODE_SHIFT);
time_left = wait_for_completion_timeout(&priv->type_detect,
msecs_to_jiffies(timeout_ms));
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HSDET_MODE_MASK, 0x2 << CS42L43_HSDET_MODE_SHIFT);
cs42l43_stop_hs_bias(priv);
if (!time_left)
return -ETIMEDOUT;
regmap_read(cs42l43->regmap, CS42L43_HS_STAT, &type);
dev_dbg(priv->dev, "Type detect: 0x%x\n", type);
/* Bail if jack removed, the type is irrelevant and likely invalid */
if (!cs42l43_jack_present(priv))
return -ENODEV;
switch (type & CS42L43_HSDET_TYPE_STS_MASK) {
case 0x0: // CTIA
case 0x1: // OMTP
return cs42l43_run_load_detect(priv, true);
case 0x2: // 3-pole
return cs42l43_run_load_detect(priv, false);
case 0x3: // Open-circuit
return CS42L43_JACK_EXTENSION;
default:
return -EINVAL;
}
}
static void cs42l43_clear_jack(struct cs42l43_codec *priv)
{
struct cs42l43 *cs42l43 = priv->core;
cs42l43_stop_button_detect(priv);
cs42l43_stop_hs_bias(priv);
regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL1,
CS42L43_PGA_WIDESWING_MODE_EN_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL2,
CS42L43_PGA_WIDESWING_MODE_EN_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CTRL,
CS42L43_JACK_STEREO_CONFIG_MASK, 0);
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HSDET_MODE_MASK | CS42L43_HSDET_MANUAL_MODE_MASK,
0x2 << CS42L43_HSDET_MODE_SHIFT);
snd_soc_jack_report(priv->jack_hp, 0, 0xFFFF);
}
void cs42l43_tip_sense_work(struct work_struct *work)
{
struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
tip_sense_work.work);
struct cs42l43 *cs42l43 = priv->core;
unsigned int sts = 0;
unsigned int tip, ring;
int ret, report;
ret = pm_runtime_resume_and_get(priv->dev);
if (ret) {
dev_err(priv->dev, "Failed to resume for tip work: %d\n", ret);
return;
}
mutex_lock(&priv->jack_lock);
regmap_read(cs42l43->regmap, CS42L43_TIP_RING_SENSE_INTERRUPT_STATUS, &sts);
dev_dbg(priv->dev, "Tip sense: 0x%x\n", sts);
tip = (sts >> CS42L43_TIPSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
ring = (sts >> CS42L43_RINGSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
if (tip == CS42L43_JACK_PRESENT) {
if (cs42l43->sdw && !priv->jack_present) {
priv->jack_present = true;
pm_runtime_get(priv->dev);
}
if (priv->use_ring_sense && ring == CS42L43_JACK_ABSENT) {
report = CS42L43_JACK_OPTICAL;
} else {
report = cs42l43_run_type_detect(priv);
if (report < 0) {
dev_err(priv->dev, "Jack detect failed: %d\n", report);
goto error;
}
}
snd_soc_jack_report(priv->jack_hp, report, report);
} else {
priv->jack_override = 0;
cs42l43_clear_jack(priv);
if (cs42l43->sdw && priv->jack_present) {
pm_runtime_put(priv->dev);
priv->jack_present = false;
}
}
error:
mutex_unlock(&priv->jack_lock);
pm_runtime_mark_last_busy(priv->dev);
pm_runtime_put_autosuspend(priv->dev);
}
irqreturn_t cs42l43_tip_sense(int irq, void *data)
{
struct cs42l43_codec *priv = data;
cancel_delayed_work(&priv->bias_sense_timeout);
cancel_delayed_work(&priv->tip_sense_work);
cancel_delayed_work(&priv->button_press_work);
cancel_work(&priv->button_release_work);
queue_delayed_work(system_long_wq, &priv->tip_sense_work,
msecs_to_jiffies(priv->tip_debounce_ms));
return IRQ_HANDLED;
}
enum cs42l43_raw_jack {
CS42L43_JACK_RAW_CTIA = 0,
CS42L43_JACK_RAW_OMTP,
CS42L43_JACK_RAW_HEADPHONE,
CS42L43_JACK_RAW_LINE_OUT,
CS42L43_JACK_RAW_LINE_IN,
CS42L43_JACK_RAW_MICROPHONE,
CS42L43_JACK_RAW_OPTICAL,
};
#define CS42L43_JACK_3_POLE_SWITCHES ((0x2 << CS42L43_HSDET_MANUAL_MODE_SHIFT) | \
CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK | \
CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK | \
CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK | \
CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK | \
CS42L43_HSGND_HS3_SEL_MASK | \
CS42L43_HSGND_HS4_SEL_MASK)
static const struct cs42l43_jack_override_mode {
unsigned int hsdet_mode;
unsigned int mic_ctrl;
unsigned int clamp_ctrl;
int report;
} cs42l43_jack_override_modes[] = {
[CS42L43_JACK_RAW_CTIA] = {
.hsdet_mode = CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
CS42L43_HSGND_HS3_SEL_MASK,
.clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
.report = CS42L43_JACK_HEADSET,
},
[CS42L43_JACK_RAW_OMTP] = {
.hsdet_mode = (0x1 << CS42L43_HSDET_MANUAL_MODE_SHIFT) |
CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
CS42L43_HSGND_HS4_SEL_MASK,
.clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
.report = CS42L43_JACK_HEADSET,
},
[CS42L43_JACK_RAW_HEADPHONE] = {
.hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
.clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
.report = CS42L43_JACK_HEADPHONE,
},
[CS42L43_JACK_RAW_LINE_OUT] = {
.hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
.clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
.report = CS42L43_JACK_LINEOUT,
},
[CS42L43_JACK_RAW_LINE_IN] = {
.hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
.mic_ctrl = 0x2 << CS42L43_JACK_STEREO_CONFIG_SHIFT,
.report = CS42L43_JACK_LINEIN,
},
[CS42L43_JACK_RAW_MICROPHONE] = {
.hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
.mic_ctrl = (0x3 << CS42L43_JACK_STEREO_CONFIG_SHIFT) |
CS42L43_HS1_BIAS_EN_MASK | CS42L43_HS2_BIAS_EN_MASK,
.report = CS42L43_JACK_LINEIN,
},
[CS42L43_JACK_RAW_OPTICAL] = {
.hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
.clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
.report = CS42L43_JACK_OPTICAL,
},
};
static const char * const cs42l43_jack_text[] = {
"None", "CTIA", "OMTP", "Headphone", "Line-Out",
"Line-In", "Microphone", "Optical",
};
static_assert(ARRAY_SIZE(cs42l43_jack_override_modes) ==
ARRAY_SIZE(cs42l43_jack_text) - 1);
SOC_ENUM_SINGLE_VIRT_DECL(cs42l43_jack_enum, cs42l43_jack_text);
int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
mutex_lock(&priv->jack_lock);
ucontrol->value.integer.value[0] = priv->jack_override;
mutex_unlock(&priv->jack_lock);
return 0;
}
int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
struct cs42l43 *cs42l43 = priv->core;
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int override = ucontrol->value.integer.value[0];
if (override >= e->items)
return -EINVAL;
mutex_lock(&priv->jack_lock);
if (!cs42l43_jack_present(priv)) {
mutex_unlock(&priv->jack_lock);
return -EBUSY;
}
if (override == priv->jack_override) {
mutex_unlock(&priv->jack_lock);
return 0;
}
priv->jack_override = override;
cs42l43_clear_jack(priv);
if (!override) {
queue_delayed_work(system_long_wq, &priv->tip_sense_work, 0);
} else {
override--;
regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
CS42L43_HSDET_MODE_MASK |
CS42L43_HSDET_MANUAL_MODE_MASK |
CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
CS42L43_HSGND_HS3_SEL_MASK |
CS42L43_HSGND_HS4_SEL_MASK,
cs42l43_jack_override_modes[override].hsdet_mode);
regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CTRL,
CS42L43_HS2_BIAS_EN_MASK | CS42L43_HS1_BIAS_EN_MASK |
CS42L43_JACK_STEREO_CONFIG_MASK,
cs42l43_jack_override_modes[override].mic_ctrl);
regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
cs42l43_jack_override_modes[override].clamp_ctrl);
switch (override) {
case CS42L43_JACK_RAW_CTIA:
case CS42L43_JACK_RAW_OMTP:
cs42l43_start_hs_bias(priv, false);
cs42l43_start_button_detect(priv);
break;
case CS42L43_JACK_RAW_LINE_IN:
regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL1,
CS42L43_PGA_WIDESWING_MODE_EN_MASK,
CS42L43_PGA_WIDESWING_MODE_EN_MASK);
regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL2,
CS42L43_PGA_WIDESWING_MODE_EN_MASK,
CS42L43_PGA_WIDESWING_MODE_EN_MASK);
break;
case CS42L43_JACK_RAW_MICROPHONE:
cs42l43_start_hs_bias(priv, false);
break;
default:
break;
}
snd_soc_jack_report(priv->jack_hp,
cs42l43_jack_override_modes[override].report,
cs42l43_jack_override_modes[override].report);
}
mutex_unlock(&priv->jack_lock);
return 1;
}
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