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Add: headset detection for 6-Mics Circular Array Kit and 4-Mics Linear Array Kit

This commit is contained in:
Peter.Yang 2018-04-02 08:43:20 +00:00
parent 8211f4c000
commit d660a92d73
5 changed files with 456 additions and 5 deletions
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423
ac101.c
View File

@ -36,11 +36,13 @@
#include <linux/clk.h>
#include <linux/gpio/consumer.h>
#include <linux/regmap.h>
#include <linux/input.h>
#include "ac101_regs.h"
#include "ac10x.h"
/*
* *** To sync channels ***
*
* 1. disable clock in codec hw_params()
* 2. clear fifo in bcm2835 hw_params()
* 3. clear fifo in bcm2385 prepare()
@ -94,6 +96,385 @@ int ac101_update_bits(struct snd_soc_codec *codec, unsigned reg,
return regmap_update_bits(ac10x->regmap101, reg, mask, value);
}
#ifdef CONFIG_AC101_SWITCH_DETECT
/******************************************************************************/
/********************************switch****************************************/
/******************************************************************************/
#define KEY_HEADSETHOOK 226 /* key define */
#define HEADSET_FILTER_CNT (10)
#define _AC101_CREATE_QUEUE 0
#if _AC101_CREATE_QUEUE
static struct workqueue_struct *queue_switch_detect;
static struct workqueue_struct *queue_codec_irq;
#endif
/*
* switch_hw_config:config the 53 codec register
*/
static void switch_hw_config(struct snd_soc_codec *codec)
{
int r;
AC101_DBG("%s,line:%d\n",__func__,__LINE__);
/*HMIC/MMIC BIAS voltage level select:2.5v*/
ac101_update_bits(codec, OMIXER_BST1_CTRL, (0xf<<BIASVOLTAGE), (0xf<<BIASVOLTAGE));
/*debounce when Key down or keyup*/
ac101_update_bits(codec, HMIC_CTRL1, (0xf<<HMIC_M), (0x0<<HMIC_M));
/*debounce when earphone plugin or pullout*/
ac101_update_bits(codec, HMIC_CTRL1, (0xf<<HMIC_N), (0x0<<HMIC_N));
/*Down Sample Setting Select: Downby 4,32Hz*/
ac101_update_bits(codec, HMIC_CTRL2, (0x3<<HMIC_SAMPLE_SELECT), (0x02<<HMIC_SAMPLE_SELECT));
/*Hmic_th2 for detecting Keydown or Keyup.*/
ac101_update_bits(codec, HMIC_CTRL2, (0x1f<<HMIC_TH2), (0x8<<HMIC_TH2));
/*Hmic_th1[4:0],detecting eraphone plugin or pullout*/
ac101_update_bits(codec, HMIC_CTRL2, (0x1f<<HMIC_TH1), (0x1<<HMIC_TH1));
/*Headset microphone BIAS working mode: when HBIASEN = 1 */
ac101_update_bits(codec, ADC_APC_CTRL, (0x1<<HBIASMOD), (0x1<<HBIASMOD));
/*Headset microphone BIAS Enable*/
ac101_update_bits(codec, ADC_APC_CTRL, (0x1<<HBIASEN), (0x1<<HBIASEN));
/*Headset microphone BIAS Current sensor & ADC Enable*/
ac101_update_bits(codec, ADC_APC_CTRL, (0x1<<HBIASADCEN), (0x1<<HBIASADCEN));
/*Earphone Plugin/out Irq Enable*/
ac101_update_bits(codec, HMIC_CTRL1, (0x1<<HMIC_PULLOUT_IRQ), (0x1<<HMIC_PULLOUT_IRQ));
ac101_update_bits(codec, HMIC_CTRL1, (0x1<<HMIC_PLUGIN_IRQ), (0x1<<HMIC_PLUGIN_IRQ));
/*Hmic KeyUp/key down Irq Enable*/
ac101_update_bits(codec, HMIC_CTRL1, (0x1<<HMIC_KEYDOWN_IRQ), (0x1<<HMIC_KEYDOWN_IRQ));
ac101_update_bits(codec, HMIC_CTRL1, (0x1<<HMIC_KEYUP_IRQ), (0x1<<HMIC_KEYUP_IRQ));
/*headphone calibration clock frequency select*/
ac101_update_bits(codec, SPKOUT_CTRL, (0x7<<HPCALICKS), (0x7<<HPCALICKS));
/*clear hmic interrupt */
r = HMIC_PEND_ALL;
ac101_write(codec, HMIC_STS, r);
return;
}
/*
* switch_status_update: update the switch state.
*/
static void switch_status_update(struct ac10x_priv *ac10x)
{
AC101_DBG("%s,line:%d,ac10x->state:%d\n", __func__, __LINE__, ac10x->state);
input_report_switch(ac10x->inpdev, SW_HEADPHONE_INSERT, ac10x->state);
input_sync(ac10x->inpdev);
return;
}
/*
* work_cb_clear_irq: clear audiocodec pending and Record the interrupt.
*/
static void work_cb_clear_irq(struct work_struct *work)
{
int reg_val = 0;
struct ac10x_priv *ac10x = container_of(work, struct ac10x_priv, work_clear_irq);
struct snd_soc_codec *codec = ac10x->codec;
ac10x->irq_cntr++;
reg_val = ac101_read(codec, HMIC_STS);
if (BIT(HMIC_PULLOUT_PEND) & reg_val) {
ac10x->pullout_cntr++;
AC101_DBG("ac10x->pullout_cntr: %d\n",ac10x->pullout_cntr);
}
reg_val |= HMIC_PEND_ALL;
ac101_write(codec, HMIC_STS, reg_val);
reg_val = ac101_read(codec, HMIC_STS);
if ((reg_val & HMIC_PEND_ALL) != 0){
reg_val |= HMIC_PEND_ALL;
ac101_write(codec, HMIC_STS, reg_val);
}
if (cancel_work_sync(&ac10x->work_switch) != 0) {
ac10x->irq_cntr--;
}
#if _AC101_CREATE_QUEUE
if (0 == queue_work(queue_switch_detect, &ac10x->work_switch)) {
#else
if (0 == schedule_work(&ac10x->work_switch)) {
#endif
ac10x->irq_cntr--;
AC101_DBG("[work_cb_clear_irq] add work struct failed!\n");
}
}
enum {
HBIAS_LEVEL_1 = 0x02,
HBIAS_LEVEL_2 = 0x0B,
HBIAS_LEVEL_3 = 0x13,
HBIAS_LEVEL_4 = 0x17,
HBIAS_LEVEL_5 = 0x19,
};
static int __ac101_get_hmic_data(struct snd_soc_codec *codec) {
static long counter;
int r;
int d;
d = GET_HMIC_DATA(ac101_read(codec, HMIC_STS));
r = 0x1 << HMIC_DATA_PEND;
ac101_write(codec, HMIC_STS, r);
AC101_DBG("%s,line:%d HMIC_DATA(%3ld): %02X\n", __func__, __LINE__,
counter++, d
);
return d;
}
/*
* work_cb_earphone_switch: judge the status of the headphone
*/
static void work_cb_earphone_switch(struct work_struct *work)
{
struct ac10x_priv *ac10x = container_of(work, struct ac10x_priv, work_switch);
struct snd_soc_codec *codec = ac10x->codec;
static int hook_flag1 = 0, hook_flag2 = 0;
static int KEY_VOLUME_FLAG = 0;
unsigned filter_buf = 0;
int filt_index = 0;
int t = 0;
ac10x->irq_cntr--;
/* read HMIC_DATA */
t = __ac101_get_hmic_data(codec);
if ((t >= HBIAS_LEVEL_2) && (ac10x->mode == FOUR_HEADPHONE_PLUGIN)) {
t = __ac101_get_hmic_data(codec);
if (t >= HBIAS_LEVEL_5){
msleep(150);
t = __ac101_get_hmic_data(codec);
if (((t < HBIAS_LEVEL_2 && t >= HBIAS_LEVEL_1 - 1) || t >= HBIAS_LEVEL_5)
&& (ac10x->pullout_cntr == 0)) {
input_report_key(ac10x->inpdev, KEY_HEADSETHOOK, 1);
input_sync(ac10x->inpdev);
AC101_DBG("%s,line:%d KEY_HEADSETHOOK1\n", __func__, __LINE__);
if (hook_flag1 != hook_flag2)
hook_flag1 = hook_flag2 = 0;
hook_flag1++;
}
if (ac10x->pullout_cntr)
ac10x->pullout_cntr--;
} else if (t >= HBIAS_LEVEL_4) {
msleep(80);
t = __ac101_get_hmic_data(codec);
if (t < HBIAS_LEVEL_5 && t >= HBIAS_LEVEL_4 && (ac10x->pullout_cntr == 0)) {
KEY_VOLUME_FLAG = 1;
input_report_key(ac10x->inpdev, KEY_VOLUMEUP, 1);
input_sync(ac10x->inpdev);
input_report_key(ac10x->inpdev, KEY_VOLUMEUP, 0);
input_sync(ac10x->inpdev);
AC101_DBG("%s,line:%d HMIC_DATA: %d KEY_VOLUMEUP\n", __func__, __LINE__, t);
}
if (ac10x->pullout_cntr)
ac10x->pullout_cntr--;
} else if (t >= HBIAS_LEVEL_3){
msleep(80);
t = __ac101_get_hmic_data(codec);
if (t < HBIAS_LEVEL_4 && t >= HBIAS_LEVEL_3 && (ac10x->pullout_cntr == 0)){
KEY_VOLUME_FLAG = 1;
input_report_key(ac10x->inpdev, KEY_VOLUMEDOWN, 1);
input_sync(ac10x->inpdev);
input_report_key(ac10x->inpdev, KEY_VOLUMEDOWN, 0);
input_sync(ac10x->inpdev);
AC101_DBG("%s,line:%d KEY_VOLUMEDOWN\n", __func__, __LINE__);
}
if (ac10x->pullout_cntr)
ac10x->pullout_cntr--;
}
} else if ((t < HBIAS_LEVEL_2 && t >= HBIAS_LEVEL_1) && (ac10x->mode == FOUR_HEADPHONE_PLUGIN)) {
t = __ac101_get_hmic_data(codec);
if (t < HBIAS_LEVEL_2 && t >= HBIAS_LEVEL_1) {
if (KEY_VOLUME_FLAG) {
KEY_VOLUME_FLAG = 0;
}
if (hook_flag1 == (++hook_flag2)) {
hook_flag1 = hook_flag2 = 0;
input_report_key(ac10x->inpdev, KEY_HEADSETHOOK, 0);
input_sync(ac10x->inpdev);
AC101_DBG("%s,line:%d KEY_HEADSETHOOK0\n", __func__, __LINE__);
}
}
} else {
while (ac10x->irq_cntr == 0) {
msleep(20);
t = __ac101_get_hmic_data(codec);
if (filt_index <= HEADSET_FILTER_CNT) {
if (filt_index++ == 0) {
filter_buf = t;
} else if (filter_buf != t) {
filt_index = 0;
}
continue;
}
filt_index = 0;
if (filter_buf >= HBIAS_LEVEL_2) {
ac10x->mode = THREE_HEADPHONE_PLUGIN;
ac10x->state = 2;
} else if (filter_buf >= HBIAS_LEVEL_1 - 1) {
ac10x->mode = FOUR_HEADPHONE_PLUGIN;
ac10x->state = 1;
} else {
ac10x->mode = HEADPHONE_IDLE;
ac10x->state = 0;
}
switch_status_update(ac10x);
ac10x->pullout_cntr = 0;
break;
}
}
}
/*
* audio_hmic_irq: the interrupt handlers
*/
static irqreturn_t audio_hmic_irq(int irq, void *para)
{
struct ac10x_priv *ac10x = (struct ac10x_priv *)para;
if (ac10x == NULL) {
return -EINVAL;
}
#if _AC101_CREATE_QUEUE
if (queue_codec_irq == NULL) {
AC101_DBG("------------queue_codec_irq is null !!----------");
return IRQ_NONE;
}
if (0 == queue_work(queue_codec_irq, &ac10x->work_clear_irq)){
#else
if (0 == schedule_work(&ac10x->work_clear_irq)){
#endif
AC101_DBG("[audio_hmic_irq] work already in queue_codec_irq, adding failed!\n");
}
return IRQ_HANDLED;
}
static int ac101_switch_probe(struct ac10x_priv *ac10x) {
struct i2c_client *i2c = ac10x->i2c101;
int ret;
ac10x->gpiod_irq = devm_gpiod_get_optional(&i2c->dev, "switch-irq", GPIOD_IN);
if (IS_ERR(ac10x->gpiod_irq)) {
ac10x->gpiod_irq = NULL;
dev_err(&i2c->dev, "failed get switch-irq in device tree\n");
goto _err_irq;
}
gpiod_direction_input(ac10x->gpiod_irq);
ac10x->irq = gpiod_to_irq(ac10x->gpiod_irq);
if (IS_ERR_VALUE(ac10x->irq)) {
pr_info("[ac101] map gpio to irq failed, errno = %d\n", ac10x->irq);
ac10x->irq = 0;
goto _err_irq;
}
/* request irq, set irq type to falling edge trigger */
ret = devm_request_irq(ac10x->codec->dev, ac10x->irq, audio_hmic_irq, IRQF_TRIGGER_FALLING, "SWTICH_EINT", ac10x);
if (IS_ERR_VALUE(ret)) {
pr_info("[ac101] request virq %d failed, errno = %d\n", ac10x->irq, ret);
goto _err_irq;
}
ac10x->mode = HEADPHONE_IDLE;
ac10x->state = -1;
/*use for judge the state of switch*/
INIT_WORK(&ac10x->work_switch, work_cb_earphone_switch);
INIT_WORK(&ac10x->work_clear_irq, work_cb_clear_irq);
/********************create input device************************/
ac10x->inpdev = devm_input_allocate_device(ac10x->codec->dev);
if (!ac10x->inpdev) {
AC101_DBG("input_allocate_device: not enough memory for input device\n");
ret = -ENOMEM;
goto _err_input_allocate_device;
}
ac10x->inpdev->name = "seed-voicecard-headset";
ac10x->inpdev->phys = dev_name(ac10x->codec->dev);
ac10x->inpdev->id.bustype = BUS_I2C;
ac10x->inpdev->dev.parent = ac10x->codec->dev;
input_set_drvdata(ac10x->inpdev, ac10x->codec);
ac10x->inpdev->evbit[0] = BIT_MASK(EV_KEY) | BIT(EV_SW);
set_bit(KEY_HEADSETHOOK, ac10x->inpdev->keybit);
set_bit(KEY_VOLUMEUP, ac10x->inpdev->keybit);
set_bit(KEY_VOLUMEDOWN, ac10x->inpdev->keybit);
input_set_capability(ac10x->inpdev, EV_SW, SW_HEADPHONE_INSERT);
ret = input_register_device(ac10x->inpdev);
if (ret) {
AC101_DBG("input_register_device: input_register_device failed\n");
goto _err_input_register_device;
}
/* the first headset state checking */
switch_hw_config(ac10x->codec);
ac10x->irq_cntr = 1;
#if _AC101_CREATE_QUEUE
queue_codec_irq = create_singlethread_workqueue("codec_irq");
queue_switch_detect = create_singlethread_workqueue("codec_switch");
if (queue_switch_detect == NULL || queue_codec_irq == NULL) {
AC101_DBG("try to create workqueue for codec failed!\n");
ret = -ENOMEM;
goto _err_switch_work_queue;
}
queue_work(queue_switch_detect, &ac10x->work_switch);
#else
schedule_work(&ac10x->work_switch);
#endif
return 0;
#if _AC101_CREATE_QUEUE
_err_switch_work_queue:
input_unregister_device(ac10x->inpdev);
#endif
_err_input_register_device:
_err_input_allocate_device:
if (ac10x->irq) {
devm_free_irq(&i2c->dev, ac10x->irq, NULL);
ac10x->irq = 0;
}
_err_irq:
return ret;
}
/******************************************************************************/
/********************************switch****************************************/
/******************************************************************************/
#endif
void drc_config(struct snd_soc_codec *codec)
{
int reg_val;
@ -1019,8 +1400,15 @@ int ac101_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level le
break;
case SND_SOC_BIAS_STANDBY:
AC101_DBG("%s,line:%d, SND_SOC_BIAS_STANDBY\n", __func__, __LINE__);
#ifdef CONFIG_AC101_SWITCH_DETECT
switch_hw_config(codec);
#endif
break;
case SND_SOC_BIAS_OFF:
#ifdef CONFIG_AC101_SWITCH_DETECT
ac101_update_bits(codec, ADC_APC_CTRL, (0x1<<HBIASEN), (0<<HBIASEN));
ac101_update_bits(codec, ADC_APC_CTRL, (0x1<<HBIASADCEN), (0<<HBIASADCEN));
#endif
ac101_update_bits(codec, OMIXER_DACA_CTRL, (0xf<<HPOUTPUTENABLE), (0<<HPOUTPUTENABLE));
ac101_update_bits(codec, ADDA_TUNE3, (0x1<<OSCEN), (0<<OSCEN));
AC101_DBG("%s,line:%d, SND_SOC_BIAS_OFF\n", __func__, __LINE__);
@ -1071,13 +1459,29 @@ int ac101_codec_probe(struct snd_soc_codec *codec)
"will continue without it.\n");
}
#ifdef CONFIG_AC101_SWITCH_DETECT
ret = ac101_switch_probe(ac10x);
if (ret) {
// not care the switch return value
}
#endif
return 0;
}
/* power down chip */
int ac101_codec_remove(struct snd_soc_codec *codec)
{
// struct ac10x_priv *ac10x = snd_soc_codec_get_drvdata(codec);
#ifdef CONFIG_AC101_SWITCH_DETECT
struct ac10x_priv *ac10x = snd_soc_codec_get_drvdata(codec);
if (ac10x->irq) {
devm_free_irq(codec->dev, ac10x->irq, NULL);
ac10x->irq = 0;
}
#endif
return 0;
}
@ -1106,6 +1510,11 @@ int ac101_codec_resume(struct snd_soc_codec *codec)
return ret;
}
#ifdef CONFIG_AC101_SWITCH_DETECT
ac10x->mode = HEADPHONE_IDLE;
ac10x->state = -1;
#endif
ac101_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
schedule_work(&ac10x->codec_resume);
return 0;
@ -1166,12 +1575,23 @@ static struct attribute_group audio_debug_attr_group = {
/***************************************************************************/
/************************************************************/
static bool ac101_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case PLL_CTRL2:
case HMIC_STS:
return true;
}
return false;
}
static const struct regmap_config ac101_regmap = {
.reg_bits = 8,
.val_bits = 16,
.reg_stride = 1,
.max_register = 0xB5,
.cache_type = REGCACHE_FLAT,
.volatile_reg = ac101_volatile_reg,
};
/* Sync reg_cache from the hardware */
@ -1246,6 +1666,7 @@ int ac101_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
ac10x->gpiod_spk_amp_gate = NULL;
dev_err(&i2c->dev, "failed get spk-amp-switch in device tree\n");
}
return 0;
}

2
ac101_regs.h
View File

@ -247,11 +247,13 @@
/*HMIC_STS*/
#define HMIC_DATA 8
#define GET_HMIC_DATA(r) (((r) >> HMIC_DATA) & 0x1F)
#define HMIC_PULLOUT_PEND 4
#define HMIC_PLUGIN_PEND 3
#define HMIC_KEYUP_PEND 2
#define HMKC_KEYDOWN_PEND 1
#define HMIC_DATA_PEND 0
#define HMIC_PEND_ALL (0x1F)
/*DAC_DIG_CTRL*/
#define ENDA 15

27
ac10x.h
View File

@ -26,6 +26,10 @@
#define _MASTER_AC101 1
#define _MASTER_MULTI_CODEC _MASTER_AC101
/* enable headset detecting & headset button pressing */
#define CONFIG_AC101_SWITCH_DETECT
#ifdef AC101_DEBG
#define AC101_DBG(format,args...) printk("[AC101] "format,##args)
#else
@ -33,6 +37,14 @@
#endif
#ifdef CONFIG_AC101_SWITCH_DETECT
enum headphone_mode_u {
HEADPHONE_IDLE,
FOUR_HEADPHONE_PLUGIN,
THREE_HEADPHONE_PLUGIN,
};
#endif
struct ac10x_priv {
struct i2c_client *i2c[4];
struct regmap* i2cmap[4];
@ -60,9 +72,24 @@ struct ac10x_priv {
struct work_struct codec_resume;
struct gpio_desc* gpiod_spk_amp_gate;
#ifdef CONFIG_AC101_SWITCH_DETECT
struct gpio_desc* gpiod_irq;
int irq;
volatile int irq_cntr;
volatile int pullout_cntr;
volatile int state;
enum headphone_mode_u mode;
struct work_struct work_switch;
struct work_struct work_clear_irq;
struct input_dev* inpdev;
#endif
/* member for ac101 .end */
};
/* AC101 DAI operations */
int ac101_audio_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *codec_dai);
void ac101_aif_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *codec_dai);

9
seeed-8mic-voicecard-overlay.dts
View File

@ -26,9 +26,9 @@
fragment@2 {
target = <&gpio>;
__overlay__ {
spk_amp_switch_pins: speaker_amp_switch_pins {
brcm,pins = <17>;
brcm,function = <1>; /* out */
spk_amp_and_irq_pins: speaker_amp_and_irq_pins {
brcm,pins = <17 22>;
brcm,function = <1 0>; /* out in */
};
gpclk0_pins: gpclk0_pins {
brcm,pins = <4>;
@ -47,8 +47,9 @@
ac101: ac101@1a{
compatible = "x-power,ac101";
pinctrl-names = "default";
pinctrl-0 = <&spk_amp_switch_pins>,<&gpclk0_pins>;
pinctrl-0 = <&spk_amp_and_irq_pins>,<&gpclk0_pins>;
spk-amp-switch-gpios = <&gpio 17 0>;
switch-irq-gpios = <&gpio 22 0>;
reg = <0x1a>;
#sound-dai-cells = <0>;
};

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seeed-8mic-voicecard.dtbo
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