// SPDX-License-Identifier: GPL-2.0
//
// mt6359-accdet.c -- ALSA SoC mt6359 accdet driver
//
// Copyright (C) 2021 MediaTek Inc.
// Author: Argus Lin <[email protected]>
//
#include <linux/of.h>
#include <linux/input.h>
#include <linux/kthread.h>
#include <linux/io.h>
#include <linux/sched/clock.h>
#include <linux/workqueue.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/irqdomain.h>
#include <linux/irq.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <linux/mfd/mt6397/core.h>
#include "mt6359-accdet.h"
#include "mt6359.h"
/* global variable definitions */
#define REGISTER_VAL(x) ((x) - 1)
/* mt6359 accdet capability */
#define ACCDET_PMIC_EINT_IRQ BIT(0)
#define ACCDET_AP_GPIO_EINT BIT(1)
#define ACCDET_PMIC_EINT0 BIT(2)
#define ACCDET_PMIC_EINT1 BIT(3)
#define ACCDET_PMIC_BI_EINT BIT(4)
#define ACCDET_PMIC_GPIO_TRIG_EINT BIT(5)
#define ACCDET_PMIC_INVERTER_TRIG_EINT BIT(6)
#define ACCDET_PMIC_RSV_EINT BIT(7)
#define ACCDET_THREE_KEY BIT(8)
#define ACCDET_FOUR_KEY BIT(9)
#define ACCDET_TRI_KEY_CDD BIT(10)
#define ACCDET_RSV_KEY BIT(11)
#define ACCDET_ANALOG_FASTDISCHARGE BIT(12)
#define ACCDET_DIGITAL_FASTDISCHARGE BIT(13)
#define ACCDET_AD_FASTDISCHRAGE BIT(14)
static struct platform_driver mt6359_accdet_driver;
static const struct snd_soc_component_driver mt6359_accdet_soc_driver;
/* local function declaration */
static void accdet_set_debounce(struct mt6359_accdet *priv, int state,
unsigned int debounce);
static unsigned int adjust_eint_analog_setting(struct mt6359_accdet *priv);
static void config_digital_init_by_mode(struct mt6359_accdet *priv);
static void config_eint_init_by_mode(struct mt6359_accdet *priv);
static inline void mt6359_accdet_init(struct mt6359_accdet *priv);
static unsigned int mt6359_accdet_jd_setting(struct mt6359_accdet *priv);
static void mt6359_accdet_recover_jd_setting(struct mt6359_accdet *priv);
static void mt6359_accdet_jack_report(struct mt6359_accdet *priv);
static void recover_eint_analog_setting(struct mt6359_accdet *priv);
static void recover_eint_digital_setting(struct mt6359_accdet *priv);
static void recover_eint_setting(struct mt6359_accdet *priv);
static unsigned int adjust_eint_analog_setting(struct mt6359_accdet *priv)
{
if (priv->data->eint_detect_mode == 0x3 ||
priv->data->eint_detect_mode == 0x4) {
/* ESD switches off */
regmap_update_bits(priv->regmap,
RG_ACCDETSPARE_ADDR, 1 << 8, 0);
}
if (priv->data->eint_detect_mode == 0x4) {
if (priv->caps & ACCDET_PMIC_EINT0) {
/* enable RG_EINT0CONFIGACCDET */
regmap_update_bits(priv->regmap,
RG_EINT0CONFIGACCDET_ADDR,
RG_EINT0CONFIGACCDET_MASK_SFT,
BIT(RG_EINT0CONFIGACCDET_SFT));
} else if (priv->caps & ACCDET_PMIC_EINT1) {
/* enable RG_EINT1CONFIGACCDET */
regmap_update_bits(priv->regmap,
RG_EINT1CONFIGACCDET_ADDR,
RG_EINT1CONFIGACCDET_MASK_SFT,
BIT(RG_EINT1CONFIGACCDET_SFT));
}
if (priv->data->eint_use_ext_res == 0x3 ||
priv->data->eint_use_ext_res == 0x4) {
/*select 500k, use internal resistor */
regmap_update_bits(priv->regmap,
RG_EINT0HIRENB_ADDR,
RG_EINT0HIRENB_MASK_SFT,
BIT(RG_EINT0HIRENB_SFT));
}
}
return 0;
}
static unsigned int adjust_eint_digital_setting(struct mt6359_accdet *priv)
{
if (priv->caps & ACCDET_PMIC_EINT0) {
/* disable inverter */
regmap_update_bits(priv->regmap,
ACCDET_EINT0_INVERTER_SW_EN_ADDR,
ACCDET_EINT0_INVERTER_SW_EN_MASK_SFT, 0);
} else if (priv->caps & ACCDET_PMIC_EINT1) {
/* disable inverter */
regmap_update_bits(priv->regmap,
ACCDET_EINT1_INVERTER_SW_EN_ADDR,
ACCDET_EINT1_INVERTER_SW_EN_MASK_SFT, 0);
}
if (priv->data->eint_detect_mode == 0x4) {
if (priv->caps & ACCDET_PMIC_EINT0) {
/* set DA stable signal */
regmap_update_bits(priv->regmap,
ACCDET_DA_STABLE_ADDR,
ACCDET_EINT0_CEN_STABLE_MASK_SFT, 0);
} else if (priv->caps & ACCDET_PMIC_EINT1) {
/* set DA stable signal */
regmap_update_bits(priv->regmap,
ACCDET_DA_STABLE_ADDR,
ACCDET_EINT1_CEN_STABLE_MASK_SFT, 0);
}
}
return 0;
}
static unsigned int mt6359_accdet_jd_setting(struct mt6359_accdet *priv)
{
if (priv->jd_sts == M_PLUG_IN) {
/* adjust digital setting */
adjust_eint_digital_setting(priv);
/* adjust analog setting */
adjust_eint_analog_setting(priv);
} else if (priv->jd_sts == M_PLUG_OUT) {
/* set debounce to 1ms */
accdet_set_debounce(priv, eint_state000,
priv->data->pwm_deb->eint_debounce0);
} else {
dev_dbg(priv->dev, "should not be here %s()\n", __func__);
}
return 0;
}
static void recover_eint_analog_setting(struct mt6359_accdet *priv)
{
if (priv->data->eint_detect_mode == 0x3 ||
priv->data->eint_detect_mode == 0x4) {
/* ESD switches on */
regmap_update_bits(priv->regmap, RG_ACCDETSPARE_ADDR,
1 << 8, 1 << 8);
}
if (priv->data->eint_detect_mode == 0x4) {
if (priv->caps & ACCDET_PMIC_EINT0) {
/* disable RG_EINT0CONFIGACCDET */
regmap_update_bits(priv->regmap,
RG_EINT0CONFIGACCDET_ADDR,
RG_EINT0CONFIGACCDET_MASK_SFT, 0);
} else if (priv->caps & ACCDET_PMIC_EINT1) {
/* disable RG_EINT1CONFIGACCDET */
regmap_update_bits(priv->regmap,
RG_EINT1CONFIGACCDET_ADDR,
RG_EINT1CONFIGACCDET_MASK_SFT, 0);
}
regmap_update_bits(priv->regmap, RG_EINT0HIRENB_ADDR,
RG_EINT0HIRENB_MASK_SFT, 0);
}
}
static void recover_eint_digital_setting(struct mt6359_accdet *priv)
{
if (priv->caps & ACCDET_PMIC_EINT0) {
regmap_update_bits(priv->regmap,
ACCDET_EINT0_M_SW_EN_ADDR,
ACCDET_EINT0_M_SW_EN_MASK_SFT, 0);
} else if (priv->caps & ACCDET_PMIC_EINT1) {
regmap_update_bits(priv->regmap,
ACCDET_EINT1_M_SW_EN_ADDR,
ACCDET_EINT1_M_SW_EN_MASK_SFT, 0);
}
if (priv->data->eint_detect_mode == 0x4) {
/* enable eint0cen */
if (priv->caps & ACCDET_PMIC_EINT0) {
/* enable eint0cen */
regmap_update_bits(priv->regmap,
ACCDET_DA_STABLE_ADDR,
ACCDET_EINT0_CEN_STABLE_MASK_SFT,
BIT(ACCDET_EINT0_CEN_STABLE_SFT));
} else if (priv->caps & ACCDET_PMIC_EINT1) {
/* enable eint1cen */
regmap_update_bits(priv->regmap,
ACCDET_DA_STABLE_ADDR,
ACCDET_EINT1_CEN_STABLE_MASK_SFT,
BIT(ACCDET_EINT1_CEN_STABLE_SFT));
}
}
if (priv->data->eint_detect_mode != 0x1) {
if (priv->caps & ACCDET_PMIC_EINT0) {
/* enable inverter */
regmap_update_bits(priv->regmap,
ACCDET_EINT0_INVERTER_SW_EN_ADDR,
ACCDET_EINT0_INVERTER_SW_EN_MASK_SFT,
BIT(ACCDET_EINT0_INVERTER_SW_EN_SFT));
} else if (priv->caps & ACCDET_PMIC_EINT1) {
/* enable inverter */
regmap_update_bits(priv->regmap,
ACCDET_EINT1_INVERTER_SW_EN_ADDR,
ACCDET_EINT1_INVERTER_SW_EN_MASK_SFT,
BIT(ACCDET_EINT1_INVERTER_SW_EN_SFT));
}
}
}
static void recover_eint_setting(struct mt6359_accdet *priv)
{
if (priv->jd_sts == M_PLUG_OUT) {
recover_eint_analog_setting(priv);
recover_eint_digital_setting(priv);
}
}
static void mt6359_accdet_recover_jd_setting(struct mt6359_accdet *priv)
{
int ret;
unsigned int value = 0;
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_IRQ_CLR_MASK_SFT, BIT(ACCDET_IRQ_CLR_SFT));
usleep_range(200, 300);
ret = regmap_read_poll_timeout(priv->regmap,
ACCDET_IRQ_ADDR,
value,
(value & ACCDET_IRQ_MASK_SFT) == 0,
0,
1000);
if (ret)
dev_warn(priv->dev, "%s(), ret %d\n", __func__, ret);
/* clear accdet int, modify for fix interrupt trigger twice error */
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_IRQ_CLR_MASK_SFT, 0);
regmap_update_bits(priv->regmap, RG_INT_STATUS_ACCDET_ADDR,
RG_INT_STATUS_ACCDET_MASK_SFT,
BIT(RG_INT_STATUS_ACCDET_SFT));
/* recover accdet debounce0,3 */
accdet_set_debounce(priv, accdet_state000,
priv->data->pwm_deb->debounce0);
accdet_set_debounce(priv, accdet_state001,
priv->data->pwm_deb->debounce1);
accdet_set_debounce(priv, accdet_state011,
priv->data->pwm_deb->debounce3);
priv->jack_type = 0;
priv->btn_type = 0;
priv->accdet_status = 0x3;
mt6359_accdet_jack_report(priv);
}
static void accdet_set_debounce(struct mt6359_accdet *priv, int state,
unsigned int debounce)
{
switch (state) {
case accdet_state000:
regmap_write(priv->regmap, ACCDET_DEBOUNCE0_ADDR, debounce);
break;
case accdet_state001:
regmap_write(priv->regmap, ACCDET_DEBOUNCE1_ADDR, debounce);
break;
case accdet_state010:
regmap_write(priv->regmap, ACCDET_DEBOUNCE2_ADDR, debounce);
break;
case accdet_state011:
regmap_write(priv->regmap, ACCDET_DEBOUNCE3_ADDR, debounce);
break;
case accdet_auxadc:
regmap_write(priv->regmap,
ACCDET_CONNECT_AUXADC_TIME_DIG_ADDR, debounce);
break;
case eint_state000:
regmap_update_bits(priv->regmap, ACCDET_EINT_DEBOUNCE0_ADDR,
0xF << ACCDET_EINT_DEBOUNCE0_SFT,
debounce << ACCDET_EINT_DEBOUNCE0_SFT);
break;
case eint_state001:
regmap_update_bits(priv->regmap, ACCDET_EINT_DEBOUNCE1_ADDR,
0xF << ACCDET_EINT_DEBOUNCE1_SFT,
debounce << ACCDET_EINT_DEBOUNCE1_SFT);
break;
case eint_state010:
regmap_update_bits(priv->regmap, ACCDET_EINT_DEBOUNCE2_ADDR,
0xF << ACCDET_EINT_DEBOUNCE2_SFT,
debounce << ACCDET_EINT_DEBOUNCE2_SFT);
break;
case eint_state011:
regmap_update_bits(priv->regmap, ACCDET_EINT_DEBOUNCE3_ADDR,
0xF << ACCDET_EINT_DEBOUNCE3_SFT,
debounce << ACCDET_EINT_DEBOUNCE3_SFT);
break;
case eint_inverter_state000:
regmap_write(priv->regmap, ACCDET_EINT_INVERTER_DEBOUNCE_ADDR,
debounce);
break;
default:
dev_warn(priv->dev, "Error: %s error state (%d)\n", __func__,
state);
break;
}
}
static void mt6359_accdet_jack_report(struct mt6359_accdet *priv)
{
int report = 0;
if (!priv->jack)
return;
report = priv->jack_type | priv->btn_type;
snd_soc_jack_report(priv->jack, report, MT6359_ACCDET_JACK_MASK);
}
static unsigned int check_button(struct mt6359_accdet *priv, unsigned int v)
{
if (priv->caps & ACCDET_FOUR_KEY) {
if (v < priv->data->four_key.down &&
v >= priv->data->four_key.up)
priv->btn_type = SND_JACK_BTN_1;
if (v < priv->data->four_key.up &&
v >= priv->data->four_key.voice)
priv->btn_type = SND_JACK_BTN_2;
if (v < priv->data->four_key.voice &&
v >= priv->data->four_key.mid)
priv->btn_type = SND_JACK_BTN_3;
if (v < priv->data->four_key.mid)
priv->btn_type = SND_JACK_BTN_0;
} else {
if (v < priv->data->three_key.down &&
v >= priv->data->three_key.up)
priv->btn_type = SND_JACK_BTN_1;
if (v < priv->data->three_key.up &&
v >= priv->data->three_key.mid)
priv->btn_type = SND_JACK_BTN_2;
if (v < priv->data->three_key.mid)
priv->btn_type = SND_JACK_BTN_0;
}
return 0;
}
static void is_key_pressed(struct mt6359_accdet *priv, bool pressed)
{
priv->btn_type = priv->jack_type & ~MT6359_ACCDET_BTN_MASK;
if (pressed)
check_button(priv, priv->cali_voltage);
}
static inline void check_jack_btn_type(struct mt6359_accdet *priv)
{
unsigned int val = 0;
regmap_read(priv->regmap, ACCDET_MEM_IN_ADDR, &val);
priv->accdet_status =
(val >> ACCDET_STATE_MEM_IN_OFFSET) & ACCDET_STATE_AB_MASK;
switch (priv->accdet_status) {
case 0:
if (priv->jack_type == SND_JACK_HEADSET)
is_key_pressed(priv, true);
else
priv->jack_type = SND_JACK_HEADPHONE;
break;
case 1:
if (priv->jack_type == SND_JACK_HEADSET) {
is_key_pressed(priv, false);
} else {
priv->jack_type = SND_JACK_HEADSET;
accdet_set_debounce(priv, eint_state011, 0x1);
}
break;
case 3:
default:
priv->jack_type = 0;
break;
}
}
static void mt6359_accdet_work(struct work_struct *work)
{
struct mt6359_accdet *priv =
container_of(work, struct mt6359_accdet, accdet_work);
mutex_lock(&priv->res_lock);
priv->pre_accdet_status = priv->accdet_status;
check_jack_btn_type(priv);
if (priv->jack_plugged &&
priv->pre_accdet_status != priv->accdet_status)
mt6359_accdet_jack_report(priv);
mutex_unlock(&priv->res_lock);
}
static void mt6359_accdet_jd_work(struct work_struct *work)
{
int ret;
unsigned int value = 0;
struct mt6359_accdet *priv =
container_of(work, struct mt6359_accdet, jd_work);
mutex_lock(&priv->res_lock);
if (priv->jd_sts == M_PLUG_IN) {
priv->jack_plugged = true;
/* set and clear initial bit every eint interrupt */
regmap_update_bits(priv->regmap, ACCDET_SEQ_INIT_ADDR,
ACCDET_SEQ_INIT_MASK_SFT,
BIT(ACCDET_SEQ_INIT_SFT));
regmap_update_bits(priv->regmap, ACCDET_SEQ_INIT_ADDR,
ACCDET_SEQ_INIT_MASK_SFT, 0);
ret = regmap_read_poll_timeout(priv->regmap,
ACCDET_SEQ_INIT_ADDR,
value,
(value & ACCDET_SEQ_INIT_MASK_SFT) == 0,
0,
1000);
if (ret)
dev_err(priv->dev, "%s(), ret %d\n", __func__, ret);
/* enable ACCDET unit */
regmap_update_bits(priv->regmap, ACCDET_SW_EN_ADDR,
ACCDET_SW_EN_MASK_SFT, BIT(ACCDET_SW_EN_SFT));
} else if (priv->jd_sts == M_PLUG_OUT) {
priv->jack_plugged = false;
accdet_set_debounce(priv, accdet_state011,
priv->data->pwm_deb->debounce3);
regmap_update_bits(priv->regmap, ACCDET_SW_EN_ADDR,
ACCDET_SW_EN_MASK_SFT, 0);
mt6359_accdet_recover_jd_setting(priv);
}
if (priv->caps & ACCDET_PMIC_EINT_IRQ)
recover_eint_setting(priv);
mutex_unlock(&priv->res_lock);
}
static irqreturn_t mt6359_accdet_irq(int irq, void *data)
{
struct mt6359_accdet *priv = data;
unsigned int irq_val = 0, val = 0, value = 0;
int ret;
mutex_lock(&priv->res_lock);
regmap_read(priv->regmap, ACCDET_IRQ_ADDR, &irq_val);
if (irq_val & ACCDET_IRQ_MASK_SFT) {
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_IRQ_CLR_MASK_SFT,
BIT(ACCDET_IRQ_CLR_SFT));
ret = regmap_read_poll_timeout(priv->regmap,
ACCDET_IRQ_ADDR,
value,
(value & ACCDET_IRQ_MASK_SFT) == 0,
0,
1000);
if (ret) {
dev_err(priv->dev, "%s(), ret %d\n", __func__, ret);
mutex_unlock(&priv->res_lock);
return IRQ_NONE;
}
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_IRQ_CLR_MASK_SFT, 0);
regmap_update_bits(priv->regmap, RG_INT_STATUS_ACCDET_ADDR,
RG_INT_STATUS_ACCDET_MASK_SFT,
BIT(RG_INT_STATUS_ACCDET_SFT));
queue_work(priv->accdet_workqueue, &priv->accdet_work);
} else {
if (irq_val & ACCDET_EINT0_IRQ_MASK_SFT) {
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_EINT0_IRQ_CLR_MASK_SFT,
BIT(ACCDET_EINT0_IRQ_CLR_SFT));
ret = regmap_read_poll_timeout(priv->regmap,
ACCDET_IRQ_ADDR,
value,
(value & ACCDET_EINT0_IRQ_MASK_SFT) == 0,
0,
1000);
if (ret) {
dev_err(priv->dev, "%s(), ret %d\n", __func__,
ret);
mutex_unlock(&priv->res_lock);
return IRQ_NONE;
}
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_EINT0_IRQ_CLR_MASK_SFT, 0);
regmap_update_bits(priv->regmap,
RG_INT_STATUS_ACCDET_ADDR,
RG_INT_STATUS_ACCDET_EINT0_MASK_SFT,
BIT(RG_INT_STATUS_ACCDET_EINT0_SFT));
}
if (irq_val & ACCDET_EINT1_IRQ_MASK_SFT) {
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_EINT1_IRQ_CLR_MASK_SFT,
BIT(ACCDET_EINT1_IRQ_CLR_SFT));
ret = regmap_read_poll_timeout(priv->regmap,
ACCDET_IRQ_ADDR,
value,
(value & ACCDET_EINT1_IRQ_MASK_SFT) == 0,
0,
1000);
if (ret) {
dev_err(priv->dev, "%s(), ret %d\n", __func__,
ret);
mutex_unlock(&priv->res_lock);
return IRQ_NONE;
}
regmap_update_bits(priv->regmap, ACCDET_IRQ_ADDR,
ACCDET_EINT1_IRQ_CLR_MASK_SFT, 0);
regmap_update_bits(priv->regmap,
RG_INT_STATUS_ACCDET_ADDR,
RG_INT_STATUS_ACCDET_EINT1_MASK_SFT,
BIT(RG_INT_STATUS_ACCDET_EINT1_SFT));
}
/* get jack detection status */
regmap_read(priv->regmap, ACCDET_EINT0_MEM_IN_ADDR, &val);
priv->jd_sts = ((val >> ACCDET_EINT0_MEM_IN_SFT) &
ACCDET_EINT0_MEM_IN_MASK);
/* adjust eint digital/analog setting */
mt6359_accdet_jd_setting(priv);
queue_work(priv->jd_workqueue, &priv->jd_work);
}
mutex_unlock(&priv->res_lock);
return IRQ_HANDLED;
}
static int mt6359_accdet_parse_dt(struct mt6359_accdet *priv)
{
int ret;
struct device *dev = priv->dev;
struct device_node *node = NULL;
int pwm_deb[15] = {0};
unsigned int tmp = 0;
node = of_get_child_by_name(dev->parent->of_node, "accdet");
if (!node)
return -EINVAL;
ret = of_property_read_u32(node, "mediatek,mic-vol",
&priv->data->mic_vol);
if (ret)
priv->data->mic_vol = 8;
ret = of_property_read_u32(node, "mediatek,plugout-debounce",
&priv->data->plugout_deb);
if (ret)
priv->data->plugout_deb = 1;
ret = of_property_read_u32(node, "mediatek,mic-mode",
&priv->data->mic_mode);
if (ret)
priv->data->mic_mode = 2;
ret = of_property_read_u32_array(node, "mediatek,pwm-deb-setting",
pwm_deb, ARRAY_SIZE(pwm_deb));
/* debounce8(auxadc debounce) is default, needn't get from dts */
if (!ret)
memcpy(priv->data->pwm_deb, pwm_deb, sizeof(pwm_deb));
ret = of_property_read_u32(node, "mediatek,eint-level-pol",
&priv->data->eint_pol);
if (ret)
priv->data->eint_pol = 8;
ret = of_property_read_u32(node, "mediatek,eint-use-ap", &tmp);
if (ret)
tmp = 0;
if (tmp == 0)
priv->caps |= ACCDET_PMIC_EINT_IRQ;
else if (tmp == 1)
priv->caps |= ACCDET_AP_GPIO_EINT;
ret = of_property_read_u32(node, "mediatek,eint-detect-mode",
&priv->data->eint_detect_mode);
if (ret) {
/* eint detection mode equals to EINT HW Mode */
priv->data->eint_detect_mode = 0x4;
}
ret = of_property_read_u32(node, "mediatek,eint-num", &tmp);
if (ret)
tmp = 0;
if (tmp == 0)
priv->caps |= ACCDET_PMIC_EINT0;
else if (tmp == 1)
priv->caps |= ACCDET_PMIC_EINT1;
else if (tmp == 2)
priv->caps |= ACCDET_PMIC_BI_EINT;
ret = of_property_read_u32(node, "mediatek,eint-trig-mode",
&tmp);
if (ret)
tmp = 0;
if (tmp == 0)
priv->caps |= ACCDET_PMIC_GPIO_TRIG_EINT;
else if (tmp == 1)
priv->caps |= ACCDET_PMIC_INVERTER_TRIG_EINT;
ret = of_property_read_u32(node, "mediatek,eint-use-ext-res",
&priv->data->eint_use_ext_res);
if (ret) {
/* eint use internal resister */
priv->data->eint_use_ext_res = 0x0;
}
ret = of_property_read_u32(node, "mediatek,eint-comp-vth",
&priv->data->eint_comp_vth);
if (ret)
priv->data->eint_comp_vth = 0x0;
ret = of_property_read_u32(node, "mediatek,key-mode", &tmp);
if (ret)
tmp = 0;
if (tmp == 0) {
int three_key[4];
priv->caps |= ACCDET_THREE_KEY;
ret = of_property_read_u32_array(node,
"mediatek,three-key-thr",
three_key,
ARRAY_SIZE(three_key));
if (!ret)
memcpy(&priv->data->three_key, three_key + 1,
sizeof(struct three_key_threshold));
} else if (tmp == 1) {
int four_key[5];
priv->caps |= ACCDET_FOUR_KEY;
ret = of_property_read_u32_array(node,
"mediatek,four-key-thr",
four_key,
ARRAY_SIZE(four_key));
if (!ret) {
memcpy(&priv->data->four_key, four_key + 1,
sizeof(struct four_key_threshold));
} else {
dev_warn(priv->dev,
"accdet no 4-key-thrsh dts, use efuse\n");
}
} else if (tmp == 2) {
int three_key[4];
priv->caps |= ACCDET_TRI_KEY_CDD;
ret = of_property_read_u32_array(node,
"mediatek,tri-key-cdd-thr",
three_key,
ARRAY_SIZE(three_key));
if (!ret)
memcpy(&priv->data->three_key, three_key + 1,
sizeof(struct three_key_threshold));
}
of_node_put(node);
dev_warn(priv->dev, "accdet caps=%x\n", priv->caps);
return 0;
}
static void config_digital_init_by_mode(struct mt6359_accdet *priv)
{
/* enable eint cmpmem pwm */
regmap_write(priv->regmap, ACCDET_EINT_CMPMEN_PWM_THRESH_ADDR,
(priv->data->pwm_deb->eint_pwm_width << 4 |
priv->data->pwm_deb->eint_pwm_thresh));
/* DA signal stable */
if (priv->caps & ACCDET_PMIC_EINT0) {
regmap_write(priv->regmap, ACCDET_DA_STABLE_ADDR,
ACCDET_EINT0_STABLE_VAL);
} else if (priv->caps & ACCDET_PMIC_EINT1) {
regmap_write(priv->regmap, ACCDET_DA_STABLE_ADDR,
ACCDET_EINT1_STABLE_VAL);
}
/* after receive n+1 number, interrupt issued. */
regmap_update_bits(priv->regmap, ACCDET_EINT_M_PLUG_IN_NUM_ADDR,
ACCDET_EINT_M_PLUG_IN_NUM_MASK_SFT,
BIT(ACCDET_EINT_M_PLUG_IN_NUM_SFT));
/* setting HW mode, enable digital fast discharge
* if use EINT0 & EINT1 detection, please modify
* ACCDET_HWMODE_EN_ADDR[2:1]
*/
regmap_write(priv->regmap, ACCDET_HWMODE_EN_ADDR, 0x100);
regmap_update_bits(priv->regmap, ACCDET_EINT_M_DETECT_EN_ADDR,
ACCDET_EINT_M_DETECT_EN_MASK_SFT, 0);
/* enable PWM */
regmap_write(priv->regmap, ACCDET_CMP_PWM_EN_ADDR, 0x67);
/* enable inverter detection */
if (priv->data->eint_detect_mode == 0x1) {
/* disable inverter detection */
if (priv->caps & ACCDET_PMIC_EINT0) {
regmap_update_bits(priv->regmap,
ACCDET_EINT0_INVERTER_SW_EN_ADDR,
ACCDET_EINT0_INVERTER_SW_EN_MASK_SFT,
0);
} else if (priv->caps & ACCDET_PMIC_EINT1) {
regmap_update_bits(priv->regmap,
ACCDET_EINT1_INVERTER_SW_EN_ADDR,
ACCDET_EINT1_INVERTER_SW_EN_MASK_SFT,
0);
}
} else {
if (priv->caps & ACCDET_PMIC_EINT0) {
regmap_update_bits(priv->regmap,
ACCDET_EINT0_INVERTER_SW_EN_ADDR,
ACCDET_EINT0_INVERTER_SW_EN_MASK_SFT,
BIT(ACCDET_EINT0_INVERTER_SW_EN_SFT));
} else if (priv->caps & ACCDET_PMIC_EINT1) {
regmap_update_bits(priv->regmap,
ACCDET_EINT1_INVERTER_SW_EN_ADDR,
ACCDET_EINT1_INVERTER_SW_EN_MASK_SFT,
BIT(ACCDET_EINT1_INVERTER_SW_EN_SFT));
}
}
}
static void config_eint_init_by_mode(struct mt6359_accdet *priv)
{
unsigned int val = 0;
if (priv->caps & ACCDET_PMIC_EINT0) {
regmap_update_bits(priv->regmap, RG_EINT0EN_ADDR,
RG_EINT0EN_MASK_SFT, BIT(RG_EINT0EN_SFT));
} else if (priv->caps & ACCDET_PMIC_EINT1) {
regmap_update_bits(priv->regmap, RG_EINT1EN_ADDR,
RG_EINT1EN_MASK_SFT, BIT(RG_EINT1EN_SFT));
}
/* ESD switches on */
regmap_update_bits(priv->regmap, RG_ACCDETSPARE_ADDR,
1 << 8, 1 << 8);
/* before playback, set NCP pull low before nagative voltage */
regmap_update_bits(priv->regmap, RG_NCP_PDDIS_EN_ADDR,
RG_NCP_PDDIS_EN_MASK_SFT, BIT(RG_NCP_PDDIS_EN_SFT));
if (priv->data->eint_detect_mode == 0x1 ||
priv->data->eint_detect_mode == 0x2 ||
priv->data->eint_detect_mode == 0x3) {
if (priv->data->eint_use_ext_res == 0x1) {
if (priv->caps & ACCDET_PMIC_EINT0) {
regmap_update_bits(priv->regmap,
RG_EINT0CONFIGACCDET_ADDR,
RG_EINT0CONFIGACCDET_MASK_SFT,
0);
} else if (priv->caps & ACCDET_PMIC_EINT1) {
regmap_update_bits(priv->regmap,
RG_EINT1CONFIGACCDET_ADDR,
RG_EINT1CONFIGACCDET_MASK_SFT,
0);
}
} else {
if (priv->caps & ACCDET_PMIC_EINT0) {
regmap_update_bits(priv->regmap,
RG_EINT0CONFIGACCDET_ADDR,
RG_EINT0CONFIGACCDET_MASK_SFT,
BIT(RG_EINT0CONFIGACCDET_SFT));
} else if (priv->caps & ACCDET_PMIC_EINT1) {
regmap_update_bits(priv->regmap,
RG_EINT1CONFIGACCDET_ADDR,
RG_EINT1CONFIGACCDET_MASK_SFT,
BIT(RG_EINT1CONFIGACCDET_SFT));
}
}
}
if (priv->data->eint_detect_mode != 0x1) {
/* current detect set 0.25uA */
regmap_update_bits(priv->regmap, RG_ACCDETSPARE_ADDR,
0x3 << RG_ACCDETSPARE_SFT,
0x3 << RG_ACCDETSPARE_SFT);
}
regmap_write(priv->regmap, RG_EINTCOMPVTH_ADDR,
val | priv->data->eint_comp_vth << RG_EINTCOMPVTH_SFT);
}
static void mt6359_accdet_init(struct mt6359_accdet *priv)
{
unsigned int reg = 0;
regmap_update_bits(priv->regmap, ACCDET_SEQ_INIT_ADDR,
ACCDET_SEQ_INIT_MASK_SFT, BIT(ACCDET_SEQ_INIT_SFT));
mdelay(2);
regmap_update_bits(priv->regmap, ACCDET_SEQ_INIT_ADDR,
ACCDET_SEQ_INIT_MASK_SFT, 0);
mdelay(1);
/* init the debounce time (debounce/32768)sec */
accdet_set_debounce(priv, accdet_state000,
priv->data->pwm_deb->debounce0);
accdet_set_debounce(priv, accdet_state001,
priv->data->pwm_deb->debounce1);
accdet_set_debounce(priv, accdet_state011,
priv->data->pwm_deb->debounce3);
accdet_set_debounce(priv, accdet_auxadc,
priv->data->pwm_deb->debounce4);
accdet_set_debounce(priv, eint_state000,
priv->data->pwm_deb->eint_debounce0);
accdet_set_debounce(priv, eint_state001,
priv->data->pwm_deb->eint_debounce1);
accdet_set_debounce(priv, eint_state011,
priv->data->pwm_deb->eint_debounce3);
accdet_set_debounce(priv, eint_inverter_state000,
priv->data->pwm_deb->eint_inverter_debounce);
regmap_update_bits(priv->regmap, RG_ACCDET_RST_ADDR,
RG_ACCDET_RST_MASK_SFT, BIT(RG_ACCDET_RST_SFT));
regmap_update_bits(priv->regmap, RG_ACCDET_RST_ADDR,
RG_ACCDET_RST_MASK_SFT, 0);
/* clear high micbias1 voltage setting */
regmap_update_bits(priv->regmap, RG_AUDPWDBMICBIAS1_ADDR,
0x3 << RG_AUDMICBIAS1HVEN_SFT, 0);
regmap_update_bits(priv->regmap, RG_AUDPWDBMICBIAS1_ADDR,
0x7 << RG_AUDMICBIAS1VREF_SFT, 0);
/* init pwm frequency, duty & rise/falling delay */
regmap_write(priv->regmap, ACCDET_PWM_WIDTH_ADDR,
REGISTER_VAL(priv->data->pwm_deb->pwm_width));
regmap_write(priv->regmap, ACCDET_PWM_THRESH_ADDR,
REGISTER_VAL(priv->data->pwm_deb->pwm_thresh));
regmap_write(priv->regmap, ACCDET_RISE_DELAY_ADDR,
(priv->data->pwm_deb->fall_delay << 15 |
priv->data->pwm_deb->rise_delay));
regmap_read(priv->regmap, RG_AUDPWDBMICBIAS1_ADDR, ®);
if (priv->data->mic_vol <= 7) {
/* micbias1 <= 2.7V */
regmap_write(priv->regmap, RG_AUDPWDBMICBIAS1_ADDR,
reg | (priv->data->mic_vol << RG_AUDMICBIAS1VREF_SFT) |
RG_AUDMICBIAS1LOWPEN_MASK_SFT);
} else if (priv->data->mic_vol == 8) {
/* micbias1 = 2.8v */
regmap_write(priv->regmap, RG_AUDPWDBMICBIAS1_ADDR,
reg | (3 << RG_AUDMICBIAS1HVEN_SFT) |
RG_AUDMICBIAS1LOWPEN_MASK_SFT);
} else if (priv->data->mic_vol == 9) {
/* micbias1 = 2.85v */
regmap_write(priv->regmap, RG_AUDPWDBMICBIAS1_ADDR,
reg | (1 << RG_AUDMICBIAS1HVEN_SFT) |
RG_AUDMICBIAS1LOWPEN_MASK_SFT);
}
/* mic mode setting */
regmap_read(priv->regmap, RG_AUDACCDETMICBIAS0PULLLOW_ADDR, ®);
if (priv->data->mic_mode == HEADSET_MODE_1) {
/* ACC mode*/
regmap_write(priv->regmap, RG_AUDACCDETMICBIAS0PULLLOW_ADDR,
reg | RG_ACCDET_MODE_ANA11_MODE1);
/* enable analog fast discharge */
regmap_update_bits(priv->regmap, RG_ANALOGFDEN_ADDR,
RG_ANALOGFDEN_MASK_SFT,
BIT(RG_ANALOGFDEN_SFT));
regmap_update_bits(priv->regmap, RG_ACCDETSPARE_ADDR,
0x3 << 11, 0x3 << 11);
} else if (priv->data->mic_mode == HEADSET_MODE_2) {
/* DCC mode Low cost mode without internal bias */
regmap_write(priv->regmap, RG_AUDACCDETMICBIAS0PULLLOW_ADDR,
reg | RG_ACCDET_MODE_ANA11_MODE2);
/* enable analog fast discharge */
regmap_update_bits(priv->regmap, RG_ANALOGFDEN_ADDR,
0x3 << RG_ANALOGFDEN_SFT,
0x3 << RG_ANALOGFDEN_SFT);
} else if (priv->data->mic_mode == HEADSET_MODE_6) {
/* DCC mode Low cost mode with internal bias,
* bit8 = 1 to use internal bias
*/
regmap_write(priv->regmap, RG_AUDACCDETMICBIAS0PULLLOW_ADDR,
reg | RG_ACCDET_MODE_ANA11_MODE6);
regmap_update_bits(priv->regmap, RG_AUDPWDBMICBIAS1_ADDR,
RG_AUDMICBIAS1DCSW1PEN_MASK_SFT,
BIT(RG_AUDMICBIAS1DCSW1PEN_SFT));
/* enable analog fast discharge */
regmap_update_bits(priv->regmap, RG_ANALOGFDEN_ADDR,
0x3 << RG_ANALOGFDEN_SFT,
0x3 << RG_ANALOGFDEN_SFT);
}
if (priv->caps & ACCDET_PMIC_EINT_IRQ) {
config_eint_init_by_mode(priv);
config_digital_init_by_mode(priv);
}
}
int mt6359_accdet_enable_jack_detect(struct snd_soc_component *component,
struct snd_soc_jack *jack)
{
struct mt6359_accdet *priv =
snd_soc_component_get_drvdata(component);
snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEDOWN);
snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
priv->jack = jack;
mt6359_accdet_jack_report(priv);
return 0;
}
EXPORT_SYMBOL_GPL(mt6359_accdet_enable_jack_detect);
static int mt6359_accdet_probe(struct platform_device *pdev)
{
struct mt6359_accdet *priv;
struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);
int ret;
dev_dbg(&pdev->dev, "%s(), dev name %s\n",
__func__, dev_name(&pdev->dev));
priv = devm_kzalloc(&pdev->dev, sizeof(struct mt6359_accdet),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->data = devm_kzalloc(&pdev->dev, sizeof(struct dts_data),
GFP_KERNEL);
if (!priv->data)
return -ENOMEM;
priv->data->pwm_deb = devm_kzalloc(&pdev->dev,
sizeof(struct pwm_deb_settings),
GFP_KERNEL);
if (!priv->data->pwm_deb)
return -ENOMEM;
priv->regmap = mt6397->regmap;
if (IS_ERR(priv->regmap)) {
ret = PTR_ERR(priv->regmap);
dev_err(&pdev->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
priv->dev = &pdev->dev;
ret = mt6359_accdet_parse_dt(priv);
if (ret) {
dev_err(&pdev->dev, "Failed to parse dts\n");
return ret;
}
mutex_init(&priv->res_lock);
priv->accdet_irq = platform_get_irq(pdev, 0);
if (priv->accdet_irq >= 0) {
ret = devm_request_threaded_irq(&pdev->dev, priv->accdet_irq,
NULL, mt6359_accdet_irq,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"ACCDET_IRQ", priv);
if (ret) {
dev_err(&pdev->dev,
"Failed to request IRQ: (%d)\n", ret);
return ret;
}
}
if (priv->caps & ACCDET_PMIC_EINT0) {
priv->accdet_eint0 = platform_get_irq(pdev, 1);
if (priv->accdet_eint0 >= 0) {
ret = devm_request_threaded_irq(&pdev->dev,
priv->accdet_eint0,
NULL, mt6359_accdet_irq,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"ACCDET_EINT0", priv);
if (ret) {
dev_err(&pdev->dev,
"Failed to request eint0 IRQ (%d)\n",
ret);
return ret;
}
}
} else if (priv->caps & ACCDET_PMIC_EINT1) {
priv->accdet_eint1 = platform_get_irq(pdev, 2);
if (priv->accdet_eint1 >= 0) {
ret = devm_request_threaded_irq(&pdev->dev,
priv->accdet_eint1,
NULL, mt6359_accdet_irq,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"ACCDET_EINT1", priv);
if (ret) {
dev_err(&pdev->dev,
"Failed to request eint1 IRQ (%d)\n",
ret);
return ret;
}
}
}
priv->accdet_workqueue = create_singlethread_workqueue("accdet");
INIT_WORK(&priv->accdet_work, mt6359_accdet_work);
if (!priv->accdet_workqueue) {
dev_err(&pdev->dev, "Failed to create accdet workqueue\n");
ret = -1;
goto err_accdet_wq;
}
priv->jd_workqueue = create_singlethread_workqueue("mt6359_accdet_jd");
INIT_WORK(&priv->jd_work, mt6359_accdet_jd_work);
if (!priv->jd_workqueue) {
dev_err(&pdev->dev, "Failed to create jack detect workqueue\n");
ret = -1;
goto err_eint_wq;
}
platform_set_drvdata(pdev, priv);
ret = devm_snd_soc_register_component(&pdev->dev,
&mt6359_accdet_soc_driver,
NULL, 0);
if (ret) {
dev_err(&pdev->dev, "Failed to register component\n");
return ret;
}
priv->jd_sts = M_PLUG_OUT;
priv->jack_type = 0;
priv->btn_type = 0;
priv->accdet_status = 0x3;
mt6359_accdet_init(priv);
mt6359_accdet_jack_report(priv);
return 0;
err_eint_wq:
destroy_workqueue(priv->accdet_workqueue);
err_accdet_wq:
dev_err(&pdev->dev, "%s error. now exit.!\n", __func__);
return ret;
}
static struct platform_driver mt6359_accdet_driver = {
.driver = {
.name = "pmic-codec-accdet",
},
.probe = mt6359_accdet_probe,
};
module_platform_driver(mt6359_accdet_driver)
/* Module information */
MODULE_DESCRIPTION("MT6359 ALSA SoC codec jack driver");
MODULE_AUTHOR("Argus Lin <[email protected]>");
MODULE_LICENSE("GPL v2");
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