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Commit 4618119b authored by Chen Feng's avatar Chen Feng Committed by Mark Brown
Browse files

regulator: hi655x: enable regulator for hi655x PMIC 



Add the regulator driver for hi655x PMIC.

Signed-off-by: default avatarChen Feng <puck.chen@hisilicon.com>
Signed-off-by: default avatarFei Wang <w.f@huawei.com>
Signed-off-by: default avatarXinwei Kong <kong.kongxinwei@hisilicon.com>
Reviewed-by: default avatarHaojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 16dc661e

drivers/regulator/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -261,6 +261,14 @@ config REGULATOR_HI6421 
	  21 general purpose LDOs, 3 dedicated LDOs, and 5 BUCKs. All

	  of them come with support to either ECO (idle) or sleep mode.



config REGULATOR_HI655X

	tristate "Hisilicon HI655X PMIC regulators support"

	depends on ARCH_HISI || COMPILE_TEST

	depends on MFD_HI655X_PMIC && OF

	help

	  This driver provides support for the voltage regulators of the

	  Hisilicon Hi655x PMIC device.



config REGULATOR_ISL9305

	tristate "Intersil ISL9305 regulator"

	depends on I2C

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o 
obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o

obj-$(CONFIG_REGULATOR_GPIO) += gpio-regulator.o

obj-$(CONFIG_REGULATOR_HI6421) += hi6421-regulator.o

obj-$(CONFIG_REGULATOR_HI655X) += hi655x-regulator.o

obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o

obj-$(CONFIG_REGULATOR_ISL9305) += isl9305.o

obj-$(CONFIG_REGULATOR_LM363X) += lm363x-regulator.o

drivers/regulator/hi655x-regulator.c

0 → 100644
+227 −0
Original line number Diff line number Diff line 
/*

 * Device driver for regulators in Hi655x IC

 *

 * Copyright (c) 2016 Hisilicon.

 *

 * Authors:

 * Chen Feng <puck.chen@hisilicon.com>

 * Fei  Wang <w.f@huawei.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.

 */



#include <linux/bitops.h>

#include <linux/device.h>

#include <linux/err.h>

#include <linux/module.h>

#include <linux/io.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/of_regulator.h>

#include <linux/mfd/hi655x-pmic.h>



struct hi655x_regulator {

	unsigned int disable_reg;

	unsigned int status_reg;

	unsigned int ctrl_regs;

	unsigned int ctrl_mask;

	struct regulator_desc rdesc;

};



/* LDO7 & LDO10 */

static const unsigned int ldo7_voltages[] = {

	1800000, 1850000, 2850000, 2900000,

	3000000, 3100000, 3200000, 3300000,

};



static const unsigned int ldo19_voltages[] = {

	1800000, 1850000, 1900000, 1750000,

	2800000, 2850000, 2900000, 3000000,

};



static const unsigned int ldo22_voltages[] = {

	 900000, 1000000, 1050000, 1100000,

	1150000, 1175000, 1185000, 1200000,

};



enum hi655x_regulator_id {

	HI655X_LDO0,

	HI655X_LDO1,

	HI655X_LDO2,

	HI655X_LDO3,

	HI655X_LDO4,

	HI655X_LDO5,

	HI655X_LDO6,

	HI655X_LDO7,

	HI655X_LDO8,

	HI655X_LDO9,

	HI655X_LDO10,

	HI655X_LDO11,

	HI655X_LDO12,

	HI655X_LDO13,

	HI655X_LDO14,

	HI655X_LDO15,

	HI655X_LDO16,

	HI655X_LDO17,

	HI655X_LDO18,

	HI655X_LDO19,

	HI655X_LDO20,

	HI655X_LDO21,

	HI655X_LDO22,

};



static int hi655x_is_enabled(struct regulator_dev *rdev)

{

	unsigned int value = 0;



	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);



	regmap_read(rdev->regmap, regulator->status_reg, &value);

	return (value & BIT(regulator->ctrl_mask));

}



static int hi655x_disable(struct regulator_dev *rdev)

{

	int ret = 0;



	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);



	ret = regmap_write(rdev->regmap, regulator->disable_reg,

			   BIT(regulator->ctrl_mask));

	return ret;

}



static struct regulator_ops hi655x_regulator_ops = {

	.enable = regulator_enable_regmap,

	.disable = hi655x_disable,

	.is_enabled = hi655x_is_enabled,

	.list_voltage = regulator_list_voltage_table,

	.get_voltage_sel = regulator_get_voltage_sel_regmap,

	.set_voltage_sel = regulator_set_voltage_sel_regmap,

};



static struct regulator_ops hi655x_ldo_linear_ops = {

	.enable = regulator_enable_regmap,

	.disable = hi655x_disable,

	.is_enabled = hi655x_is_enabled,

	.list_voltage = regulator_list_voltage_linear,

	.get_voltage_sel = regulator_get_voltage_sel_regmap,

	.set_voltage_sel = regulator_set_voltage_sel_regmap,

};



#define HI655X_LDO(_ID, vreg, vmask, ereg, dreg,                 \

		   sreg, cmask, vtable) {                        \

	.rdesc = {                                               \

		.name            = #_ID,                         \

		.of_match        = of_match_ptr(#_ID),           \

		.ops             = &hi655x_regulator_ops,        \

		.regulators_node = of_match_ptr("regulators"),   \

		.type            = REGULATOR_VOLTAGE,            \

		.id              = HI655X_##_ID,                 \

		.owner           = THIS_MODULE,                  \

		.n_voltages      = ARRAY_SIZE(vtable),           \

		.volt_table      = vtable,                       \

		.vsel_reg        = HI655X_BUS_ADDR(vreg),        \

		.vsel_mask       = vmask,                        \

		.enable_reg      = HI655X_BUS_ADDR(ereg),        \

		.enable_mask     = BIT(cmask),                   \

	},                                                       \

	.disable_reg = HI655X_BUS_ADDR(dreg),                    \

	.status_reg = HI655X_BUS_ADDR(sreg),                     \

	.ctrl_mask = cmask,                                      \

}



#define HI655X_LDO_LINEAR(_ID, vreg, vmask, ereg, dreg,          \

			  sreg, cmask, minv, nvolt, vstep) {     \

	.rdesc = {                                               \

		.name            = #_ID,                         \

		.of_match        = of_match_ptr(#_ID),           \

		.ops             = &hi655x_ldo_linear_ops,       \

		.regulators_node = of_match_ptr("regulators"),   \

		.type            = REGULATOR_VOLTAGE,            \

		.id              = HI655X_##_ID,                 \

		.owner           = THIS_MODULE,                  \

		.min_uV          = minv,                         \

		.n_voltages      = nvolt,                        \

		.uV_step         = vstep,                        \

		.vsel_reg        = HI655X_BUS_ADDR(vreg),        \

		.vsel_mask       = vmask,                        \

		.enable_reg      = HI655X_BUS_ADDR(ereg),        \

		.enable_mask     = BIT(cmask),                   \

	},                                                       \

	.disable_reg = HI655X_BUS_ADDR(dreg),                    \

	.status_reg = HI655X_BUS_ADDR(sreg),                     \

	.ctrl_mask = cmask,                                      \

}



static struct hi655x_regulator regulators[] = {

	HI655X_LDO_LINEAR(LDO2, 0x72, 0x07, 0x29, 0x2a, 0x2b, 0x01,

			  2500000, 8, 100000),

	HI655X_LDO(LDO7, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x06, ldo7_voltages),

	HI655X_LDO(LDO10, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x01, ldo7_voltages),

	HI655X_LDO_LINEAR(LDO13, 0x7e, 0x07, 0x2c, 0x2d, 0x2e, 0x04,

			  1600000, 8, 50000),

	HI655X_LDO_LINEAR(LDO14, 0x7f, 0x07, 0x2c, 0x2d, 0x2e, 0x05,

			  2500000, 8, 100000),

	HI655X_LDO_LINEAR(LDO15, 0x80, 0x07, 0x2c, 0x2d, 0x2e, 0x06,

			  1600000, 8, 50000),

	HI655X_LDO_LINEAR(LDO17, 0x82, 0x07, 0x2f, 0x30, 0x31, 0x00,

			  2500000, 8, 100000),

	HI655X_LDO(LDO19, 0x84, 0x07, 0x2f, 0x30, 0x31, 0x02, ldo19_voltages),

	HI655X_LDO_LINEAR(LDO21, 0x86, 0x07, 0x2f, 0x30, 0x31, 0x04,

			  1650000, 8, 50000),

	HI655X_LDO(LDO22, 0x87, 0x07, 0x2f, 0x30, 0x31, 0x05, ldo22_voltages),

};



static int hi655x_regulator_probe(struct platform_device *pdev)

{

	unsigned int i;

	struct hi655x_regulator *regulator;

	struct hi655x_pmic *pmic;

	struct regulator_config config = { };

	struct regulator_dev *rdev;



	pmic = dev_get_drvdata(pdev->dev.parent);

	if (!pmic) {

		dev_err(&pdev->dev, "no pmic in the regulator parent node\n");

		return -ENODEV;

	}



	regulator = devm_kzalloc(&pdev->dev, sizeof(*regulator), GFP_KERNEL);

	if (!regulator)

		return -ENOMEM;



	platform_set_drvdata(pdev, regulator);



	config.dev = pdev->dev.parent;

	config.regmap = pmic->regmap;

	config.driver_data = regulator;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {

		rdev = devm_regulator_register(&pdev->dev,

					       &regulators[i].rdesc,

					       &config);

		if (IS_ERR(rdev)) {

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

				regulator->rdesc.name);

			return PTR_ERR(rdev);

		}

	}

	return 0;

}



static struct platform_driver hi655x_regulator_driver = {

	.driver = {

		.name	= "hi655x-regulator",

	},

	.probe	= hi655x_regulator_probe,

};

module_platform_driver(hi655x_regulator_driver);



MODULE_AUTHOR("Chen Feng <puck.chen@hisilicon.com>");

MODULE_DESCRIPTION("Hisilicon Hi655x regulator driver");

MODULE_LICENSE("GPL v2");