uboot-phytec

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

/*

 *  Copyright (C) 2012-2015 Samsung Electronics

 *

 *  Rajeshwari Shinde <rajeshwari.s@samsung.com>

 *  Przemyslaw Marczak <p.marczak@samsung.com>

 */

​

#include <common.h>

#include <fdtdec.h>

#include <errno.h>

#include <dm.h>

#include <i2c.h>

#include <power/pmic.h>

#include <power/regulator.h>

#include <power/max77686_pmic.h>

​

#define MODE(_id, _val, _name) { \

    .id = _id, \

    .register_value = _val, \

    .name = _name, \

}

​

/* LDO: 1,3,4,5,9,17,18,19,20,21,22,23,24,26,26,27 */

static struct dm_regulator_mode max77686_ldo_mode_standby1[] = {

    MODE(OPMODE_OFF, MAX77686_LDO_MODE_OFF, "OFF"),

    MODE(OPMODE_LPM, MAX77686_LDO_MODE_LPM, "LPM"),

    MODE(OPMODE_STANDBY_LPM, MAX77686_LDO_MODE_STANDBY_LPM, "ON/LPM"),

    MODE(OPMODE_ON, MAX77686_LDO_MODE_ON, "ON"),

};

​

/* LDO: 2,6,7,8,10,11,12,14,15,16 */

static struct dm_regulator_mode max77686_ldo_mode_standby2[] = {

    MODE(OPMODE_OFF, MAX77686_LDO_MODE_OFF, "OFF"),

    MODE(OPMODE_STANDBY, MAX77686_LDO_MODE_STANDBY, "ON/OFF"),

    MODE(OPMODE_STANDBY_LPM, MAX77686_LDO_MODE_STANDBY_LPM, "ON/LPM"),

    MODE(OPMODE_ON, MAX77686_LDO_MODE_ON, "ON"),

};

​

/* Buck: 1 */

static struct dm_regulator_mode max77686_buck_mode_standby[] = {

    MODE(OPMODE_OFF, MAX77686_BUCK_MODE_OFF, "OFF"),

    MODE(OPMODE_STANDBY, MAX77686_BUCK_MODE_STANDBY, "ON/OFF"),

    MODE(OPMODE_ON, MAX77686_BUCK_MODE_ON, "ON"),

};

​

/* Buck: 2,3,4 */

static struct dm_regulator_mode max77686_buck_mode_lpm[] = {

    MODE(OPMODE_OFF, MAX77686_BUCK_MODE_OFF, "OFF"),

    MODE(OPMODE_STANDBY, MAX77686_BUCK_MODE_STANDBY, "ON/OFF"),

    MODE(OPMODE_LPM, MAX77686_BUCK_MODE_LPM, "LPM"),

    MODE(OPMODE_ON, MAX77686_BUCK_MODE_ON, "ON"),

};

​

/* Buck: 5,6,7,8,9 */

static struct dm_regulator_mode max77686_buck_mode_onoff[] = {

    MODE(OPMODE_OFF, MAX77686_BUCK_MODE_OFF, "OFF"),

    MODE(OPMODE_ON, MAX77686_BUCK_MODE_ON, "ON"),

};

​

static const char max77686_buck_ctrl[] = {

    0xff, 0x10, 0x12, 0x1c, 0x26, 0x30, 0x32, 0x34, 0x36, 0x38

};

​

static const char max77686_buck_out[] = {

    0xff, 0x11, 0x14, 0x1e, 0x28, 0x31, 0x33, 0x35, 0x37, 0x39

};

​

static int max77686_buck_volt2hex(int buck, int uV)

{

    int hex = 0;

    int hex_max = 0;

​

    switch (buck) {

    case 2:

    case 3:

    case 4:

        /* hex = (uV - 600000) / 12500; */

        hex = (uV - MAX77686_BUCK_UV_LMIN) / MAX77686_BUCK_UV_LSTEP;

        hex_max = MAX77686_BUCK234_VOLT_MAX_HEX;

        break;

    default:

        /*

         * hex = (uV - 750000) / 50000. We assume that dynamic voltage

         * scaling via GPIOs is not enabled and don't support that.

         * If this is enabled then the driver will need to take that

         * into account and check different registers depending on

         * the current setting. See the datasheet for details.

         */

        hex = (uV - MAX77686_BUCK_UV_HMIN) / MAX77686_BUCK_UV_HSTEP;

        hex_max = MAX77686_BUCK_VOLT_MAX_HEX;

        break;