Unverified Commit dafc7cde authored by Fabien Parent's avatar Fabien Parent Committed by Mark Brown
Browse files

regulator: add mt6357 regulator 



Add regulator driver for the MT6357 PMIC.

Signed-off-by: default avatarFabien Parent <fparent@baylibre.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: default avatarAlexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/20221005-mt6357-support-v7-7-477e60126749@baylibre.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent b4387db1

drivers/regulator/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -805,6 +805,15 @@ config REGULATOR_MT6332 
	  This driver supports the control of different power rails of device

	  through regulator interface



config REGULATOR_MT6357

	tristate "MediaTek MT6357 PMIC"

	depends on MFD_MT6397

	help

	  Say y here to select this option to enable the power regulator of

	  MediaTek MT6357 PMIC.

	  This driver supports the control of different power rails of device

	  through regulator interface.



config REGULATOR_MT6358

	tristate "MediaTek MT6358 PMIC"

	depends on MFD_MT6397

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -97,6 +97,7 @@ obj-$(CONFIG_REGULATOR_MT6315) += mt6315-regulator.o 
obj-$(CONFIG_REGULATOR_MT6323)	+= mt6323-regulator.o

obj-$(CONFIG_REGULATOR_MT6331)	+= mt6331-regulator.o

obj-$(CONFIG_REGULATOR_MT6332)	+= mt6332-regulator.o

obj-$(CONFIG_REGULATOR_MT6357)	+= mt6357-regulator.o

obj-$(CONFIG_REGULATOR_MT6358)	+= mt6358-regulator.o

obj-$(CONFIG_REGULATOR_MT6359)	+= mt6359-regulator.o

obj-$(CONFIG_REGULATOR_MT6360) += mt6360-regulator.o

drivers/regulator/mt6357-regulator.c

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// SPDX-License-Identifier: GPL-2.0

//

// Copyright (c) 2022 MediaTek Inc.

// Copyright (c) 2022 BayLibre, SAS.

// Author: Chen Zhong <chen.zhong@mediatek.com>

// Author: Fabien Parent <fparent@baylibre.com>

// Author: Alexandre Mergnat <amergnat@baylibre.com>

//

// Based on mt6397-regulator.c

//



#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/mt6357/registers.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/mt6357-regulator.h>

#include <linux/regulator/of_regulator.h>



/*

 * MT6357 regulators' information

 *

 * @desc: standard fields of regulator description.

 * @da_vsel_reg: Monitor register for query buck's voltage.

 * @da_vsel_mask: Mask for query buck's voltage.

 */

struct mt6357_regulator_info {

	struct regulator_desc desc;

	u32 da_vsel_reg;

	u32 da_vsel_mask;

};



#define MT6357_BUCK(match, vreg, min, max, step,		\

	volt_ranges, vosel_reg, vosel_mask, _da_vsel_mask)	\

[MT6357_ID_##vreg] = {		\

	.desc = {		\

		.name = #vreg,	\

		.of_match = of_match_ptr(match),		\

		.regulators_node = "regulators",		\

		.ops = &mt6357_volt_range_ops,	\

		.type = REGULATOR_VOLTAGE,	\

		.id = MT6357_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_reg,		\

		.vsel_mask = vosel_mask,	\

		.enable_reg = MT6357_BUCK_##vreg##_CON0,	\

		.enable_mask = BIT(0),		\

	},	\

	.da_vsel_reg = MT6357_BUCK_##vreg##_DBG0,		\

	.da_vsel_mask = vosel_mask,		\

}



#define MT6357_LDO(match, vreg, ldo_volt_table,	\

	enreg, vosel, vosel_mask)		\

[MT6357_ID_##vreg] = {		\

	.desc = {		\

		.name = #vreg,	\

		.of_match = of_match_ptr(match),		\

		.regulators_node = "regulators",		\

		.ops = &mt6357_volt_table_ops,	\

		.type = REGULATOR_VOLTAGE,	\

		.id = MT6357_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(0),		\

	},	\

}



#define MT6357_LDO1(match, vreg, min, max, step, volt_ranges,	\

	enreg, vosel, vosel_mask)		\

[MT6357_ID_##vreg] = {		\

	.desc = {		\

		.name = #vreg,	\

		.of_match = of_match_ptr(match),		\

		.regulators_node = "regulators",		\

		.ops = &mt6357_volt_range_ops,	\

		.type = REGULATOR_VOLTAGE,	\

		.id = MT6357_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),		\

	},	\

	.da_vsel_reg = MT6357_LDO_##vreg##_DBG0,		\

	.da_vsel_mask = 0x7f00,	\

}



#define MT6357_REG_FIXED(match, vreg, volt)	\

[MT6357_ID_##vreg] = {					\

	.desc = {					\

		.name = #vreg,				\

		.of_match = of_match_ptr(match),	\

		.regulators_node = "regulators",	\

		.ops = &mt6357_volt_fixed_ops,		\

		.type = REGULATOR_VOLTAGE,		\

		.id = MT6357_ID_##vreg,			\

		.owner = THIS_MODULE,			\

		.n_voltages = 1,			\

		.enable_reg = MT6357_LDO_##vreg##_CON0,	\

		.enable_mask = BIT(0),			\

		.min_uV = volt,				\

	},						\

}



/**

 * mt6357_get_buck_voltage_sel - get_voltage_sel for regmap users

 *

 * @rdev: regulator to operate on

 *

 * Regulators that use regmap for their register I/O can set the

 * da_vsel_reg and da_vsel_mask fields in the info structure and

 * then use this as their get_voltage_vsel operation.

 */

static int mt6357_get_buck_voltage_sel(struct regulator_dev *rdev)

{

	int ret, regval;

	struct mt6357_regulator_info *info = rdev_get_drvdata(rdev);



	ret = regmap_read(rdev->regmap, info->da_vsel_reg, &regval);

	if (ret != 0) {

		dev_err(&rdev->dev,

			"Failed to get mt6357 Buck %s vsel reg: %d\n",

			info->desc.name, ret);

		return ret;

	}



	regval &= info->da_vsel_mask;

	regval >>= ffs(info->da_vsel_mask) - 1;



	return regval;

}



static const struct regulator_ops mt6357_volt_range_ops = {

	.list_voltage = regulator_list_voltage_linear_range,

	.map_voltage = regulator_map_voltage_linear_range,

	.set_voltage_sel = regulator_set_voltage_sel_regmap,

	.get_voltage_sel = mt6357_get_buck_voltage_sel,

	.set_voltage_time_sel = regulator_set_voltage_time_sel,

	.enable = regulator_enable_regmap,

	.disable = regulator_disable_regmap,

	.is_enabled = regulator_is_enabled_regmap,

};



static const struct regulator_ops mt6357_volt_table_ops = {

	.list_voltage = regulator_list_voltage_table,

	.map_voltage = regulator_map_voltage_iterate,

	.set_voltage_sel = regulator_set_voltage_sel_regmap,

	.get_voltage_sel = regulator_get_voltage_sel_regmap,

	.set_voltage_time_sel = regulator_set_voltage_time_sel,

	.enable = regulator_enable_regmap,

	.disable = regulator_disable_regmap,

	.is_enabled = regulator_is_enabled_regmap,

};



static const struct regulator_ops mt6357_volt_fixed_ops = {

	.list_voltage = regulator_list_voltage_linear,

	.enable = regulator_enable_regmap,

	.disable = regulator_disable_regmap,

	.is_enabled = regulator_is_enabled_regmap,

};



static const int vxo22_voltages[] = {

	2200000,

	0,

	2400000,

};



static const int vefuse_voltages[] = {

	1200000,

	1300000,

	1500000,

	0,

	1800000,

	0,

	0,

	0,

	0,

	2800000,

	2900000,

	3000000,

	0,

	3300000,

};



static const int vcn33_voltages[] = {

	0,

	3300000,

	3400000,

	3500000,

};



static const int vcama_voltages[] = {

	0,

	0,

	0,

	0,

	0,

	0,

	0,

	2500000,

	0,

	0,

	2800000,

};



static const int vcamd_voltages[] = {

	0,

	0,

	0,

	0,

	1000000,

	1100000,

	1200000,

	1300000,

	0,

	1500000,

	0,

	0,

	1800000,

};



static const int vldo28_voltages[] = {

	0,

	2800000,

	0,

	3000000,

};



static const int vdram_voltages[] = {

	0,

	1100000,

	1200000,

};



static const int vsim_voltages[] = {

	0,

	0,

	0,

	1700000,

	1800000,

	0,

	0,

	0,

	2700000,

	0,

	0,

	3000000,

	3100000,

};



static const int vibr_voltages[] = {

	1200000,

	1300000,

	1500000,

	0,

	1800000,

	2000000,

	0,

	0,

	0,

	2800000,

	0,

	3000000,

	0,

	3300000,

};



static const int vmc_voltages[] = {

	0,

	0,

	0,

	0,

	1800000,

	0,

	0,

	0,

	0,

	0,

	2900000,

	3000000,

	0,

	3300000,

};



static const int vmch_voltages[] = {

	0,

	0,

	2900000,

	3000000,

	0,

	3300000,

};



static const int vemc_voltages[] = {

	0,

	0,

	2900000,

	3000000,

	0,

	3300000,

};



static const int vusb_voltages[] = {

	0,

	0,

	0,

	3000000,

	3100000,

};



static const struct linear_range buck_volt_range1[] = {

	REGULATOR_LINEAR_RANGE(518750, 0, 0x7f, 6250),

};



static const struct linear_range buck_volt_range2[] = {

	REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250),

};



static const struct linear_range buck_volt_range3[] = {

	REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000),

};



static const struct linear_range buck_volt_range4[] = {

	REGULATOR_LINEAR_RANGE(1200000, 0, 0x7f, 12500),

};



/* The array is indexed by id(MT6357_ID_XXX) */

static struct mt6357_regulator_info mt6357_regulators[] = {

	/* Bucks */

	MT6357_BUCK("buck-vcore", VCORE, 518750, 1312500, 6250,

		buck_volt_range1, MT6357_BUCK_VCORE_ELR0, 0x7f, 0x7f),

	MT6357_BUCK("buck-vproc", VPROC, 518750, 1312500, 6250,

		buck_volt_range1, MT6357_BUCK_VPROC_ELR0, 0x7f, 0x7f),

	MT6357_BUCK("buck-vmodem", VMODEM, 500000, 1293750, 6250,

		buck_volt_range2, MT6357_BUCK_VMODEM_ELR0, 0x7f, 0x7f),

	MT6357_BUCK("buck-vpa", VPA, 500000, 3650000, 50000,

		buck_volt_range3, MT6357_BUCK_VPA_CON1, 0x3f, 0x3f),

	MT6357_BUCK("buck-vs1", VS1, 1200000, 2787500, 12500,

		buck_volt_range4, MT6357_BUCK_VS1_ELR0, 0x7f, 0x7f),



	/* LDOs */

	MT6357_LDO("ldo-vcama", VCAMA, vcama_voltages,

		   MT6357_LDO_VCAMA_CON0, MT6357_VCAMA_ANA_CON0, 0xf00),

	MT6357_LDO("ldo-vcamd", VCAMD, vcamd_voltages,

		   MT6357_LDO_VCAMD_CON0, MT6357_VCAMD_ANA_CON0, 0xf00),

	MT6357_LDO("ldo-vcn33-bt", VCN33_BT, vcn33_voltages,

		   MT6357_LDO_VCN33_CON0_0, MT6357_VCN33_ANA_CON0, 0x300),

	MT6357_LDO("ldo-vcn33-wifi", VCN33_WIFI, vcn33_voltages,

		   MT6357_LDO_VCN33_CON0_1, MT6357_VCN33_ANA_CON0, 0x300),

	MT6357_LDO("ldo-vdram", VDRAM, vdram_voltages,

		   MT6357_LDO_VDRAM_CON0, MT6357_VDRAM_ELR_2, 0x300),

	MT6357_LDO("ldo-vefuse", VEFUSE, vefuse_voltages,

		   MT6357_LDO_VEFUSE_CON0, MT6357_VEFUSE_ANA_CON0, 0xf00),

	MT6357_LDO("ldo-vemc", VEMC, vemc_voltages,

		   MT6357_LDO_VEMC_CON0, MT6357_VEMC_ANA_CON0, 0x700),

	MT6357_LDO("ldo-vibr", VIBR, vibr_voltages,

		   MT6357_LDO_VIBR_CON0, MT6357_VIBR_ANA_CON0, 0xf00),

	MT6357_LDO("ldo-vldo28", VLDO28, vldo28_voltages,

		   MT6357_LDO_VLDO28_CON0_0, MT6357_VLDO28_ANA_CON0, 0x300),

	MT6357_LDO("ldo-vmc", VMC, vmc_voltages,

		   MT6357_LDO_VMC_CON0, MT6357_VMC_ANA_CON0, 0xf00),

	MT6357_LDO("ldo-vmch", VMCH, vmch_voltages,

		   MT6357_LDO_VMCH_CON0, MT6357_VMCH_ANA_CON0, 0x700),

	MT6357_LDO("ldo-vsim1", VSIM1, vsim_voltages,

		   MT6357_LDO_VSIM1_CON0, MT6357_VSIM1_ANA_CON0, 0xf00),

	MT6357_LDO("ldo-vsim2", VSIM2, vsim_voltages,

		   MT6357_LDO_VSIM2_CON0, MT6357_VSIM2_ANA_CON0, 0xf00),

	MT6357_LDO("ldo-vusb33", VUSB33, vusb_voltages,

		   MT6357_LDO_VUSB33_CON0_0, MT6357_VUSB33_ANA_CON0, 0x700),

	MT6357_LDO("ldo-vxo22", VXO22, vxo22_voltages,

		   MT6357_LDO_VXO22_CON0, MT6357_VXO22_ANA_CON0, 0x300),



	MT6357_LDO1("ldo-vsram-proc", VSRAM_PROC, 518750, 1312500, 6250,

		   buck_volt_range1, MT6357_LDO_VSRAM_PROC_CON0,

		   MT6357_LDO_VSRAM_CON0, 0x7f00),

	MT6357_LDO1("ldo-vsram-others", VSRAM_OTHERS, 518750, 1312500, 6250,

		   buck_volt_range1, MT6357_LDO_VSRAM_OTHERS_CON0,

		   MT6357_LDO_VSRAM_CON1, 0x7f00),



	MT6357_REG_FIXED("ldo-vaud28", VAUD28, 2800000),

	MT6357_REG_FIXED("ldo-vaux18", VAUX18, 1800000),

	MT6357_REG_FIXED("ldo-vcamio18", VCAMIO, 1800000),

	MT6357_REG_FIXED("ldo-vcn18", VCN18, 1800000),

	MT6357_REG_FIXED("ldo-vcn28", VCN28, 2800000),

	MT6357_REG_FIXED("ldo-vfe28", VFE28, 2800000),

	MT6357_REG_FIXED("ldo-vio18", VIO18, 1800000),

	MT6357_REG_FIXED("ldo-vio28", VIO28, 2800000),

	MT6357_REG_FIXED("ldo-vrf12", VRF12, 1200000),

	MT6357_REG_FIXED("ldo-vrf18", VRF18, 1800000),

};



static int mt6357_regulator_probe(struct platform_device *pdev)

{

	struct mt6397_chip *mt6357 = dev_get_drvdata(pdev->dev.parent);

	struct regulator_config config = {};

	struct regulator_dev *rdev;

	int i;



	pdev->dev.of_node = pdev->dev.parent->of_node;



	for (i = 0; i < MT6357_MAX_REGULATOR; i++) {

		config.dev = &pdev->dev;

		config.driver_data = &mt6357_regulators[i];

		config.regmap = mt6357->regmap;



		rdev = devm_regulator_register(&pdev->dev,

					       &mt6357_regulators[i].desc,

					       &config);

		if (IS_ERR(rdev)) {

			dev_err(&pdev->dev, "failed to register %s\n",

				mt6357_regulators[i].desc.name);

			return PTR_ERR(rdev);

		}

	}



	return 0;

}



static const struct platform_device_id mt6357_platform_ids[] = {

	{ "mt6357-regulator" },

	{ /* sentinel */ },

};

MODULE_DEVICE_TABLE(platform, mt6357_platform_ids);



static struct platform_driver mt6357_regulator_driver = {

	.driver = {

		.name = "mt6357-regulator",

	},

	.probe = mt6357_regulator_probe,

	.id_table = mt6357_platform_ids,

};



module_platform_driver(mt6357_regulator_driver);



MODULE_AUTHOR("Chen Zhong <chen.zhong@mediatek.com>");

MODULE_AUTHOR("Fabien Parent <fabien.parent@linaro.org>");

MODULE_AUTHOR("Alexandre Mergnat <amergnat@baylibre.com>");

MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6357 PMIC");

MODULE_LICENSE("GPL");

include/linux/regulator/mt6357-regulator.h

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

/*

 * Copyright (c) 2022 MediaTek Inc.

 */



#ifndef __LINUX_REGULATOR_MT6357_H

#define __LINUX_REGULATOR_MT6357_H



enum {

	/* Bucks */

	MT6357_ID_VCORE,

	MT6357_ID_VMODEM,

	MT6357_ID_VPA,

	MT6357_ID_VPROC,

	MT6357_ID_VS1,



	/* LDOs */

	MT6357_ID_VAUX18,

	MT6357_ID_VAUD28,

	MT6357_ID_VCAMA,

	MT6357_ID_VCAMD,

	MT6357_ID_VCAMIO,

	MT6357_ID_VCN18,

	MT6357_ID_VCN28,

	MT6357_ID_VCN33_BT,

	MT6357_ID_VCN33_WIFI,

	MT6357_ID_VDRAM,

	MT6357_ID_VEFUSE,

	MT6357_ID_VEMC,

	MT6357_ID_VFE28,

	MT6357_ID_VIBR,

	MT6357_ID_VIO18,

	MT6357_ID_VIO28,

	MT6357_ID_VLDO28,

	MT6357_ID_VMC,

	MT6357_ID_VMCH,

	MT6357_ID_VRF12,

	MT6357_ID_VRF18,

	MT6357_ID_VSIM1,

	MT6357_ID_VSIM2,

	MT6357_ID_VSRAM_OTHERS,

	MT6357_ID_VSRAM_PROC,

	MT6357_ID_VUSB33,

	MT6357_ID_VXO22,



	MT6357_ID_RG_MAX,

};



#define MT6357_MAX_REGULATOR	MT6357_ID_RG_MAX



#endif /* __LINUX_REGULATOR_MT6357_H */