linux-imx

// SPDX-License-Identifier: GPL-2.0+

//

// extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC

//

// Copyright (C) 2012 Samsung Electrnoics

// Chanwoo Choi <cw00.choi@samsung.com>

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/i2c.h>

#include <linux/slab.h>

#include <linux/input.h>

#include <linux/interrupt.h>

#include <linux/err.h>

#include <linux/platform_device.h>

#include <linux/mfd/max77693.h>

#include <linux/mfd/max77693-common.h>

#include <linux/mfd/max77693-private.h>

#include <linux/extcon-provider.h>

#include <linux/regmap.h>

#include <linux/irqdomain.h>

​

#define DEV_NAME            "max77693-muic"

#define DELAY_MS_DEFAULT        20000       /* unit: millisecond */

​

/*

 * Default value of MAX77693 register to bring up MUIC device.

 * If user don't set some initial value for MUIC device through platform data,

 * extcon-max77693 driver use 'default_init_data' to bring up base operation

 * of MAX77693 MUIC device.

 */

static struct max77693_reg_data default_init_data[] = {

    {

        /* STATUS2 - [3]ChgDetRun */

        .addr = MAX77693_MUIC_REG_STATUS2,

        .data = MAX77693_STATUS2_CHGDETRUN_MASK,

    }, {

        /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */

        .addr = MAX77693_MUIC_REG_INTMASK1,

        .data = INTMASK1_ADC1K_MASK

            | INTMASK1_ADC_MASK,

    }, {

        /* INTMASK2 - Unmask [0]ChgTypM */

        .addr = MAX77693_MUIC_REG_INTMASK2,

        .data = INTMASK2_CHGTYP_MASK,

    }, {

        /* INTMASK3 - Mask all of interrupts */

        .addr = MAX77693_MUIC_REG_INTMASK3,

        .data = 0x0,

    }, {

        /* CDETCTRL2 */

        .addr = MAX77693_MUIC_REG_CDETCTRL2,

        .data = CDETCTRL2_VIDRMEN_MASK

            | CDETCTRL2_DXOVPEN_MASK,

    },

};

​

enum max77693_muic_adc_debounce_time {

    ADC_DEBOUNCE_TIME_5MS = 0,

    ADC_DEBOUNCE_TIME_10MS,

    ADC_DEBOUNCE_TIME_25MS,

    ADC_DEBOUNCE_TIME_38_62MS,

};