Commit 9bb9e29c authored by Beniamino Galvani's avatar Beniamino Galvani Committed by Lee Jones
Browse files

mfd: Add Ricoh RN5T618 PMIC core driver 



Ricoh RN5T618 is a power management IC which integrates 3 step-down
DCDC converters, 7 low-dropout regulators, a Li-ion battery charger,
fuel gauge, ADC, GPIOs and a watchdog timer.

This commit adds a MFD core driver to support the I2C communication
with the device.

Signed-off-by: default avatarBeniamino Galvani <b.galvani@gmail.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 6ac734d2

drivers/mfd/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -597,6 +597,17 @@ config MFD_RC5T583 
	  Additional drivers must be enabled in order to use the

	  different functionality of the device.



config MFD_RN5T618

	tristate "Ricoh RN5T5618 PMIC"

	depends on I2C

	select MFD_CORE

	select REGMAP_I2C

	help

	  Say yes here to add support for the Ricoh RN5T618 PMIC. This

	  driver provides common support for accessing the device,

	  additional drivers must be enabled in order to use the

	  functionality of the device.



config MFD_SEC_CORE

	bool "SAMSUNG Electronics PMIC Series Support"

	depends on I2C=y

drivers/mfd/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -160,6 +160,7 @@ obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o 
obj-$(CONFIG_MFD_PALMAS)	+= palmas.o

obj-$(CONFIG_MFD_VIPERBOARD)    += viperboard.o

obj-$(CONFIG_MFD_RC5T583)	+= rc5t583.o rc5t583-irq.o

obj-$(CONFIG_MFD_RN5T618)	+= rn5t618.o

obj-$(CONFIG_MFD_SEC_CORE)	+= sec-core.o sec-irq.o

obj-$(CONFIG_MFD_SYSCON)	+= syscon.o

obj-$(CONFIG_MFD_LM3533)	+= lm3533-core.o lm3533-ctrlbank.o

drivers/mfd/rn5t618.c

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+134 −0
Original line number Diff line number Diff line 
/*

 * MFD core driver for Ricoh RN5T618 PMIC

 *

 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.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.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */



#include <linux/i2c.h>

#include <linux/mfd/core.h>

#include <linux/mfd/rn5t618.h>

#include <linux/module.h>

#include <linux/regmap.h>



static const struct mfd_cell rn5t618_cells[] = {

	{ .name = "rn5t618-regulator" },

	{ .name = "rn5t618-wdt" },

};



static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)

{

	switch (reg) {

	case RN5T618_WATCHDOGCNT:

	case RN5T618_DCIRQ:

	case RN5T618_ILIMDATAH ... RN5T618_AIN0DATAL:

	case RN5T618_IR_ADC1 ... RN5T618_IR_ADC3:

	case RN5T618_IR_GPR:

	case RN5T618_IR_GPF:

	case RN5T618_MON_IOIN:

	case RN5T618_INTMON:

		return true;

	default:

		return false;

	}

}



static const struct regmap_config rn5t618_regmap_config = {

	.reg_bits	= 8,

	.val_bits	= 8,

	.volatile_reg	= rn5t618_volatile_reg,

	.max_register	= RN5T618_MAX_REG,

	.cache_type	= REGCACHE_RBTREE,

};



static struct rn5t618 *rn5t618_pm_power_off;



static void rn5t618_power_off(void)

{

	/* disable automatic repower-on */

	regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_REPCNT,

			   RN5T618_REPCNT_REPWRON, 0);

	/* start power-off sequence */

	regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_SLPCNT,

			   RN5T618_SLPCNT_SWPWROFF, RN5T618_SLPCNT_SWPWROFF);

}



static int rn5t618_i2c_probe(struct i2c_client *i2c,

			     const struct i2c_device_id *id)

{

	struct rn5t618 *priv;

	int ret;



	priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)

		return -ENOMEM;



	i2c_set_clientdata(i2c, priv);



	priv->regmap = devm_regmap_init_i2c(i2c, &rn5t618_regmap_config);

	if (IS_ERR(priv->regmap)) {

		ret = PTR_ERR(priv->regmap);

		dev_err(&i2c->dev, "regmap init failed: %d\n", ret);

		return ret;

	}



	ret = mfd_add_devices(&i2c->dev, -1, rn5t618_cells,

			      ARRAY_SIZE(rn5t618_cells), NULL, 0, NULL);

	if (ret) {

		dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret);

		return ret;

	}



	if (!pm_power_off) {

		rn5t618_pm_power_off = priv;

		pm_power_off = rn5t618_power_off;

	}



	return 0;

}



static int rn5t618_i2c_remove(struct i2c_client *i2c)

{

	struct rn5t618 *priv = i2c_get_clientdata(i2c);



	if (priv == rn5t618_pm_power_off) {

		rn5t618_pm_power_off = NULL;

		pm_power_off = NULL;

	}



	mfd_remove_devices(&i2c->dev);

	return 0;

}



static const struct of_device_id rn5t618_of_match[] = {

	{ .compatible = "ricoh,rn5t618" },

	{ }

};

MODULE_DEVICE_TABLE(of, rn5t618_of_match);



static const struct i2c_device_id rn5t618_i2c_id[] = {

	{ }

};

MODULE_DEVICE_TABLE(i2c, rn5t618_i2c_id);



static struct i2c_driver rn5t618_i2c_driver = {

	.driver = {

		.name = "rn5t618",

		.of_match_table = of_match_ptr(rn5t618_of_match),

	},

	.probe = rn5t618_i2c_probe,

	.remove = rn5t618_i2c_remove,

	.id_table = rn5t618_i2c_id,

};



module_i2c_driver(rn5t618_i2c_driver);



MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");

MODULE_DESCRIPTION("Ricoh RN5T618 MFD driver");

MODULE_LICENSE("GPL v2");

include/linux/mfd/rn5t618.h

0 → 100644
+228 −0
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/*

 * MFD core driver for Ricoh RN5T618 PMIC

 *

 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.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.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */



#ifndef __LINUX_MFD_RN5T618_H

#define __LINUX_MFD_RN5T618_H



#include <linux/regmap.h>



#define RN5T618_LSIVER			0x00

#define RN5T618_OTPVER			0x01

#define RN5T618_IODAC			0x02

#define RN5T618_VINDAC			0x03

#define RN5T618_CPUCNT			0x06

#define RN5T618_PSWR			0x07

#define RN5T618_PONHIS			0x09

#define RN5T618_POFFHIS			0x0a

#define RN5T618_WATCHDOG		0x0b

#define RN5T618_WATCHDOGCNT		0x0c

#define RN5T618_PWRFUNC			0x0d

#define RN5T618_SLPCNT			0x0e

#define RN5T618_REPCNT			0x0f

#define RN5T618_PWRONTIMSET		0x10

#define RN5T618_NOETIMSETCNT		0x11

#define RN5T618_PWRIREN			0x12

#define RN5T618_PWRIRQ			0x13

#define RN5T618_PWRMON			0x14

#define RN5T618_PWRIRSEL		0x15

#define RN5T618_DC1_SLOT		0x16

#define RN5T618_DC2_SLOT		0x17

#define RN5T618_DC3_SLOT		0x18

#define RN5T618_LDO1_SLOT		0x1b

#define RN5T618_LDO2_SLOT		0x1c

#define RN5T618_LDO3_SLOT		0x1d

#define RN5T618_LDO4_SLOT		0x1e

#define RN5T618_LDO5_SLOT		0x1f

#define RN5T618_PSO0_SLOT		0x25

#define RN5T618_PSO1_SLOT		0x26

#define RN5T618_PSO2_SLOT		0x27

#define RN5T618_PSO3_SLOT		0x28

#define RN5T618_LDORTC1_SLOT		0x2a

#define RN5T618_DC1CTL			0x2c

#define RN5T618_DC1CTL2			0x2d

#define RN5T618_DC2CTL			0x2e

#define RN5T618_DC2CTL2			0x2f

#define RN5T618_DC3CTL			0x30

#define RN5T618_DC3CTL2			0x31

#define RN5T618_DC1DAC			0x36

#define RN5T618_DC2DAC			0x37

#define RN5T618_DC3DAC			0x38

#define RN5T618_DC1DAC_SLP		0x3b

#define RN5T618_DC2DAC_SLP		0x3c

#define RN5T618_DC3DAC_SLP		0x3d

#define RN5T618_DCIREN			0x40

#define RN5T618_DCIRQ			0x41

#define RN5T618_DCIRMON			0x42

#define RN5T618_LDOEN1			0x44

#define RN5T618_LDOEN2			0x45

#define RN5T618_LDODIS			0x46

#define RN5T618_LDO1DAC			0x4c

#define RN5T618_LDO2DAC			0x4d

#define RN5T618_LDO3DAC			0x4e

#define RN5T618_LDO4DAC			0x4f

#define RN5T618_LDO5DAC			0x50

#define RN5T618_LDORTCDAC		0x56

#define RN5T618_LDORTC2DAC		0x57

#define RN5T618_LDO1DAC_SLP		0x58

#define RN5T618_LDO2DAC_SLP		0x59

#define RN5T618_LDO3DAC_SLP		0x5a

#define RN5T618_LDO4DAC_SLP		0x5b

#define RN5T618_LDO5DAC_SLP		0x5c

#define RN5T618_ADCCNT1			0x64

#define RN5T618_ADCCNT2			0x65

#define RN5T618_ADCCNT3			0x66

#define RN5T618_ILIMDATAH		0x68

#define RN5T618_ILIMDATAL		0x69

#define RN5T618_VBATDATAH		0x6a

#define RN5T618_VBATDATAL		0x6b

#define RN5T618_VADPDATAH		0x6c

#define RN5T618_VADPDATAL		0x6d

#define RN5T618_VUSBDATAH		0x6e

#define RN5T618_VUSBDATAL		0x6f

#define RN5T618_VSYSDATAH		0x70

#define RN5T618_VSYSDATAL		0x71

#define RN5T618_VTHMDATAH		0x72

#define RN5T618_VTHMDATAL		0x73

#define RN5T618_AIN1DATAH		0x74

#define RN5T618_AIN1DATAL		0x75

#define RN5T618_AIN0DATAH		0x76

#define RN5T618_AIN0DATAL		0x77

#define RN5T618_ILIMTHL			0x78

#define RN5T618_ILIMTHH			0x79

#define RN5T618_VBATTHL			0x7a

#define RN5T618_VBATTHH			0x7b

#define RN5T618_VADPTHL			0x7c

#define RN5T618_VADPTHH			0x7d

#define RN5T618_VUSBTHL			0x7e

#define RN5T618_VUSBTHH			0x7f

#define RN5T618_VSYSTHL			0x80

#define RN5T618_VSYSTHH			0x81

#define RN5T618_VTHMTHL			0x82

#define RN5T618_VTHMTHH			0x83

#define RN5T618_AIN1THL			0x84

#define RN5T618_AIN1THH			0x85

#define RN5T618_AIN0THL			0x86

#define RN5T618_AIN0THH			0x87

#define RN5T618_EN_ADCIR1		0x88

#define RN5T618_EN_ADCIR2		0x89

#define RN5T618_EN_ADCIR3		0x8a

#define RN5T618_IR_ADC1			0x8c

#define RN5T618_IR_ADC2			0x8d

#define RN5T618_IR_ADC3			0x8e

#define RN5T618_IOSEL			0x90

#define RN5T618_IOOUT			0x91

#define RN5T618_GPEDGE1			0x92

#define RN5T618_GPEDGE2			0x93

#define RN5T618_EN_GPIR			0x94

#define RN5T618_IR_GPR			0x95

#define RN5T618_IR_GPF			0x96

#define RN5T618_MON_IOIN		0x97

#define RN5T618_GPLED_FUNC		0x98

#define RN5T618_INTPOL			0x9c

#define RN5T618_INTEN			0x9d

#define RN5T618_INTMON			0x9e

#define RN5T618_PREVINDAC		0xb0

#define RN5T618_BATDAC			0xb1

#define RN5T618_CHGCTL1			0xb3

#define RN5T618_CHGCTL2			0xb4

#define RN5T618_VSYSSET			0xb5

#define RN5T618_REGISET1		0xb6

#define RN5T618_REGISET2		0xb7

#define RN5T618_CHGISET			0xb8

#define RN5T618_TIMSET			0xb9

#define RN5T618_BATSET1			0xba

#define RN5T618_BATSET2			0xbb

#define RN5T618_DIESET			0xbc

#define RN5T618_CHGSTATE		0xbd

#define RN5T618_CHGCTRL_IRFMASK		0xbe

#define RN5T618_CHGSTAT_IRFMASK1	0xbf

#define RN5T618_CHGSTAT_IRFMASK2	0xc0

#define RN5T618_CHGERR_IRFMASK		0xc1

#define RN5T618_CHGCTRL_IRR		0xc2

#define RN5T618_CHGSTAT_IRR1		0xc3

#define RN5T618_CHGSTAT_IRR2		0xc4

#define RN5T618_CHGERR_IRR		0xc5

#define RN5T618_CHGCTRL_MONI		0xc6

#define RN5T618_CHGSTAT_MONI1		0xc7

#define RN5T618_CHGSTAT_MONI2		0xc8

#define RN5T618_CHGERR_MONI		0xc9

#define RN5T618_CHGCTRL_DETMOD1		0xca

#define RN5T618_CHGCTRL_DETMOD2		0xcb

#define RN5T618_CHGSTAT_DETMOD1		0xcc

#define RN5T618_CHGSTAT_DETMOD2		0xcd

#define RN5T618_CHGSTAT_DETMOD3		0xce

#define RN5T618_CHGERR_DETMOD1		0xcf

#define RN5T618_CHGERR_DETMOD2		0xd0

#define RN5T618_CHGOSCCTL		0xd4

#define RN5T618_CHGOSCSCORESET1		0xd5

#define RN5T618_CHGOSCSCORESET2		0xd6

#define RN5T618_CHGOSCSCORESET3		0xd7

#define RN5T618_CHGOSCFREQSET1		0xd8

#define RN5T618_CHGOSCFREQSET2		0xd9

#define RN5T618_CONTROL			0xe0

#define RN5T618_SOC			0xe1

#define RN5T618_RE_CAP_H		0xe2

#define RN5T618_RE_CAP_L		0xe3

#define RN5T618_FA_CAP_H		0xe4

#define RN5T618_FA_CAP_L		0xe5

#define RN5T618_AGE			0xe6

#define RN5T618_TT_EMPTY_H		0xe7

#define RN5T618_TT_EMPTY_L		0xe8

#define RN5T618_TT_FULL_H		0xe9

#define RN5T618_TT_FULL_L		0xea

#define RN5T618_VOLTAGE_1		0xeb

#define RN5T618_VOLTAGE_0		0xec

#define RN5T618_TEMP_1			0xed

#define RN5T618_TEMP_0			0xee

#define RN5T618_CC_CTRL			0xef

#define RN5T618_CC_COUNT2		0xf0

#define RN5T618_CC_COUNT1		0xf1

#define RN5T618_CC_COUNT0		0xf2

#define RN5T618_CC_SUMREG3		0xf3

#define RN5T618_CC_SUMREG2		0xf4

#define RN5T618_CC_SUMREG1		0xf5

#define RN5T618_CC_SUMREG0		0xf6

#define RN5T618_CC_OFFREG1		0xf7

#define RN5T618_CC_OFFREG0		0xf8

#define RN5T618_CC_GAINREG1		0xf9

#define RN5T618_CC_GAINREG0		0xfa

#define RN5T618_CC_AVEREG1		0xfb

#define RN5T618_CC_AVEREG0		0xfc

#define RN5T618_MAX_REG			0xfc



#define RN5T618_REPCNT_REPWRON		BIT(0)

#define RN5T618_SLPCNT_SWPWROFF		BIT(0)

#define RN5T618_WATCHDOG_WDOGEN		BIT(2)

#define RN5T618_WATCHDOG_WDOGTIM_M	(BIT(0) | BIT(1))

#define RN5T618_WATCHDOG_WDOGTIM_S	0

#define RN5T618_PWRIRQ_IR_WDOG		BIT(6)



enum {

	RN5T618_DCDC1,

	RN5T618_DCDC2,

	RN5T618_DCDC3,

	RN5T618_LDO1,

	RN5T618_LDO2,

	RN5T618_LDO3,

	RN5T618_LDO4,

	RN5T618_LDO5,

	RN5T618_LDORTC1,

	RN5T618_LDORTC2,

	RN5T618_REG_NUM,

};



struct rn5t618 {

	struct regmap *regmap;

};



#endif /* __LINUX_MFD_RN5T618_H */

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