linux-imx

/*

 * Copyright (c) 2014 MediaTek Inc.

 * Author: Flora Fu <flora.fu@mediatek.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

​

#include <linux/module.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>

#include <linux/mfd/mt6397/core.h>

#include <linux/mfd/mt6397/registers.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/mt6397-regulator.h>

#include <linux/regulator/of_regulator.h>

​

#define MT6397_BUCK_MODE_AUTO   0

#define MT6397_BUCK_MODE_FORCE_PWM  1

​

/*

 * MT6397 regulators' information

 *

 * @desc: standard fields of regulator description.

 * @qi: Mask for query enable signal status of regulators

 * @vselon_reg: Register sections for hardware control mode of bucks

 * @vselctrl_reg: Register for controlling the buck control mode.

 * @vselctrl_mask: Mask for query buck's voltage control mode.

 */

struct mt6397_regulator_info {

    struct regulator_desc desc;

    u32 qi;

    u32 vselon_reg;

    u32 vselctrl_reg;

    u32 vselctrl_mask;

    u32 modeset_reg;

    u32 modeset_mask;

    u32 modeset_shift;

};

​

#define MT6397_BUCK(match, vreg, min, max, step, volt_ranges, enreg,    \

        vosel, vosel_mask, voselon, vosel_ctrl, _modeset_reg,   \

        _modeset_shift)                 \

[MT6397_ID_##vreg] = {                          \

    .desc = {                           \

        .name = #vreg,                      \

        .of_match = of_match_ptr(match),            \

        .ops = &mt6397_volt_range_ops,              \

        .type = REGULATOR_VOLTAGE,              \

        .id = MT6397_ID_##vreg,                 \

        .owner = THIS_MODULE,                   \

        .n_voltages = (max - min)/step + 1,         \

        .linear_ranges = volt_ranges,               \

        .n_linear_ranges = ARRAY_SIZE(volt_ranges),     \

        .vsel_reg = vosel,                  \

        .vsel_mask = vosel_mask,                \

        .enable_reg = enreg,                    \

        .enable_mask = BIT(0),                  \

    },                              \

    .qi = BIT(13),                          \

    .vselon_reg = voselon,                      \

    .vselctrl_reg = vosel_ctrl,                 \

    .vselctrl_mask = BIT(1),                    \

    .modeset_reg = _modeset_reg,                    \

    .modeset_mask = BIT(_modeset_shift),                \

    .modeset_shift = _modeset_shift                 \

}

​

#define MT6397_LDO(match, vreg, ldo_volt_table, enreg, enbit, vosel,    \

        vosel_mask)                     \

[MT6397_ID_##vreg] = {                          \

    .desc = {                           \

        .name = #vreg,                      \

        .of_match = of_match_ptr(match),            \

        .ops = &mt6397_volt_table_ops,              \

        .type = REGULATOR_VOLTAGE,              \

        .id = MT6397_ID_##vreg,                 \

        .owner = THIS_MODULE,                   \

        .n_voltages = ARRAY_SIZE(ldo_volt_table),       \

        .volt_table = ldo_volt_table,               \

        .vsel_reg = vosel,                  \

        .vsel_mask = vosel_mask,                \

        .enable_reg = enreg,                    \

        .enable_mask = BIT(enbit),              \