Commit 4e4627e1 authored by ChiYuan Huang's avatar ChiYuan Huang Committed by Lee Jones
Browse files

mfd: rt5120: Add Richtek PMIC support 



Add Richtek RT5120 PMIC I2C driver.

Signed-off-by: default avatarChiYuan Huang <cy_huang@richtek.com>
Signed-off-by: default avatarLee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/1660100142-32493-3-git-send-email-u0084500@gmail.com
parent 8e88c61d

drivers/mfd/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -1175,6 +1175,18 @@ config MFD_RT5033 
	  sub-devices like charger, fuel gauge, flash LED, current source,

	  LDO and Buck.



config MFD_RT5120

	tristate "Richtek RT5120 Power Management IC"

	depends on I2C

	select MFD_CORE

	select REGMAP_I2C

	select REGMAP_IRQ

	help

	  The enables support for Richtek RT5120 PMIC. It includes four high

	  efficiency buck converters and one LDO voltage regulator. The device

	  is targeted at providing the CPU voltage, memory, I/O and peripheral

	  power rails in home entertainment devices.



config MFD_RC5T583

	bool "Ricoh RC5T583 Power Management system device"

	depends on I2C=y

drivers/mfd/Makefile

+1 −0
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@@ -242,6 +242,7 @@ obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o 
obj-$(CONFIG_MFD_DLN2)		+= dln2.o

obj-$(CONFIG_MFD_RT4831)	+= rt4831.o

obj-$(CONFIG_MFD_RT5033)	+= rt5033.o

obj-$(CONFIG_MFD_RT5120)	+= rt5120.o

obj-$(CONFIG_MFD_SKY81452)	+= sky81452.o



obj-$(CONFIG_INTEL_SOC_PMIC)		+= intel_soc_pmic_crc.o

drivers/mfd/rt5120.c

0 → 100644
+124 −0
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// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (C) 2022 Richtek Technology Corp.

 * Author: ChiYuan Huang <cy_huang@richtek.com>

 */



#include <linux/i2c.h>

#include <linux/kernel.h>

#include <linux/mfd/core.h>

#include <linux/module.h>

#include <linux/mod_devicetable.h>

#include <linux/regmap.h>



#define RT5120_REG_INTENABLE	0x1D

#define RT5120_REG_INTSTAT	0x1E

#define RT5120_REG_FZCMODE	0x44



#define RT5120_INT_HOTDIE	0

#define RT5120_INT_PWRKEY_REL	5

#define RT5120_INT_PWRKEY_PRESS	6



static const struct regmap_range rt5120_rd_yes_ranges[] = {

	regmap_reg_range(0x03, 0x13),

	regmap_reg_range(0x1c, 0x20),

	regmap_reg_range(0x44, 0x44),

};



static const struct regmap_range rt5120_wr_yes_ranges[] = {

	regmap_reg_range(0x06, 0x13),

	regmap_reg_range(0x1c, 0x20),

	regmap_reg_range(0x44, 0x44),

};



static const struct regmap_access_table rt5120_rd_table = {

	.yes_ranges = rt5120_rd_yes_ranges,

	.n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges),

};



static const struct regmap_access_table rt5120_wr_table = {

	.yes_ranges = rt5120_wr_yes_ranges,

	.n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges),

};



static const struct regmap_config rt5120_regmap_config = {

	.reg_bits = 8,

	.val_bits = 8,

	.max_register = RT5120_REG_FZCMODE,



	.wr_table = &rt5120_wr_table,

	.rd_table = &rt5120_rd_table,

};



static const struct regmap_irq rt5120_irqs[] = {

	REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8),

	REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8),

	REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8),

};



static const struct regmap_irq_chip rt5120_irq_chip = {

	.name = "rt5120-pmic",

	.status_base = RT5120_REG_INTSTAT,

	.mask_base = RT5120_REG_INTENABLE,

	.ack_base = RT5120_REG_INTSTAT,

	.mask_invert = true,

	.use_ack = true,

	.num_regs = 1,

	.irqs = rt5120_irqs,

	.num_irqs = ARRAY_SIZE(rt5120_irqs),

};



static const struct resource rt5120_regulator_resources[] = {

	DEFINE_RES_IRQ(RT5120_INT_HOTDIE),

};



static const struct resource rt5120_pwrkey_resources[] = {

	DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"),

	DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release"),

};



static const struct mfd_cell rt5120_devs[] = {

	MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources),

	MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, "richtek,rt5120-pwrkey"),

};



static int rt5120_probe(struct i2c_client *i2c)

{

	struct device *dev = &i2c->dev;

	struct regmap *regmap;

	struct regmap_irq_chip_data *irq_data;

	int ret;



	regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config);

	if (IS_ERR(regmap))

		return dev_err_probe(dev, PTR_ERR(regmap),

				     "Failed to init regmap\n");



	ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0,

				       &rt5120_irq_chip, &irq_data);

	if (ret)

		return dev_err_probe(dev, ret, "Failed to add IRQ chip\n");



	return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs,

				    ARRAY_SIZE(rt5120_devs), NULL, 0,

				    regmap_irq_get_domain(irq_data));

}



static const struct of_device_id rt5120_device_match_table[] = {

	{ .compatible = "richtek,rt5120" },

	{}

};

MODULE_DEVICE_TABLE(of, rt5120_device_match_table);



static struct i2c_driver rt5120_driver = {

	.driver = {

		.name = "rt5120",

		.of_match_table = rt5120_device_match_table,

	},

	.probe_new = rt5120_probe,

};

module_i2c_driver(rt5120_driver);



MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");

MODULE_DESCRIPTION("Richtek RT5120 I2C driver");

MODULE_LICENSE("GPL v2");