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Commit a99ab50d authored by Stefan Agner's avatar Stefan Agner Committed by Lee Jones
Browse files

mfd: rn5t618: Add Ricoh RN5T567 PMIC support 



The Ricoh RN5T567 is from the same family as the Ricoh RN5T618 is,
the differences are:

+ DCDC4
+ Slightly different output voltage/currents
+ 32kHz Output
- ADC/Charger capabilities

Signed-off-by: default avatarStefan Agner <stefan@agner.ch>
Reviewed-by: default avatarMarcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 229d641d

Documentation/devicetree/bindings/mfd/rn5t618.txt

+11 −8
Original line number Diff line number Diff line 
* Ricoh RN5T618 PMIC

* Ricoh RN5T567/RN5T618 PMIC



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. It can be controlled

through a I2C interface.

Ricoh RN5T567/RN5T618 is a power management IC family which integrates

3 to 4 step-down DCDC converters, 7 low-dropout regulators, GPIOs and

a watchdog timer. The RN5T618 provides additionally a Li-ion battery

charger, fuel gauge and an ADC. It can be controlled through an I2C

interface.



Required properties:

 - compatible: should be "ricoh,rn5t618"

 - compatible: must be one of

		"ricoh,rn5t567"

		"ricoh,rn5t618"

 - reg: the I2C slave address of the device



Sub-nodes:

 - regulators: the node is required if the regulator functionality is

   needed. The valid regulator names are: DCDC1, DCDC2, DCDC3, LDO1,

   LDO2, LDO3, LDO4, LDO5, LDORTC1 and LDORTC2.

   needed. The valid regulator names are: DCDC1, DCDC2, DCDC3, DCDC4

   (RN5T567), LDO1, LDO2, LDO3, LDO4, LDO5, LDORTC1 and LDORTC2.

   The common bindings for each individual regulator can be found in:

   Documentation/devicetree/bindings/regulator/regulator.txt

drivers/mfd/Kconfig

+4 −3
Original line number Diff line number Diff line
@@ -852,13 +852,14 @@ config MFD_RK808 
	  including interrupts, RTC, LDO & DCDC regulators, and onkey.



config MFD_RN5T618

	tristate "Ricoh RN5T5618 PMIC"

	tristate "Ricoh RN5T567/618 PMIC"

	depends on I2C

	depends on OF

	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,

	  Say yes here to add support for the Ricoh RN5T567 or R5T618 PMIC.

	  This driver provides common support for accessing the device,

	  additional drivers must be enabled in order to use the

	  functionality of the device.

drivers/mfd/rn5t618.c

+18 −7
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
 * MFD core driver for Ricoh RN5T618 PMIC

 *

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

 * Copyright (C) 2016 Toradex AG

 *

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

 * modify it under the terms of the GNU General Public License
@@ -15,6 +16,7 @@ 
#include <linux/mfd/core.h>

#include <linux/mfd/rn5t618.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/regmap.h>



static const struct mfd_cell rn5t618_cells[] = {
@@ -59,17 +61,32 @@ static void rn5t618_power_off(void) 
			   RN5T618_SLPCNT_SWPWROFF, RN5T618_SLPCNT_SWPWROFF);

}



static const struct of_device_id rn5t618_of_match[] = {

	{ .compatible = "ricoh,rn5t567", .data = (void *)RN5T567 },

	{ .compatible = "ricoh,rn5t618", .data = (void *)RN5T618 },

	{ }

};

MODULE_DEVICE_TABLE(of, rn5t618_of_match);



static int rn5t618_i2c_probe(struct i2c_client *i2c,

			     const struct i2c_device_id *id)

{

	const struct of_device_id *of_id;

	struct rn5t618 *priv;

	int ret;



	of_id = of_match_device(rn5t618_of_match, &i2c->dev);

	if (!of_id) {

		dev_err(&i2c->dev, "Failed to find matching DT ID\n");

		return -EINVAL;

	}



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

	if (!priv)

		return -ENOMEM;



	i2c_set_clientdata(i2c, priv);

	priv->variant = (long)of_id->data;



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

	if (IS_ERR(priv->regmap)) {
@@ -105,12 +122,6 @@ static int rn5t618_i2c_remove(struct i2c_client *i2c) 
	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[] = {

	{ }

};
@@ -129,5 +140,5 @@ static struct i2c_driver rn5t618_i2c_driver = { 
module_i2c_driver(rn5t618_i2c_driver);



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

MODULE_DESCRIPTION("Ricoh RN5T618 MFD driver");

MODULE_DESCRIPTION("Ricoh RN5T567/618 MFD driver");

MODULE_LICENSE("GPL v2");

include/linux/mfd/rn5t618.h

+12 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#define RN5T618_OTPVER			0x01

#define RN5T618_IODAC			0x02

#define RN5T618_VINDAC			0x03

#define RN5T618_OUT32KEN		0x05

#define RN5T618_CPUCNT			0x06

#define RN5T618_PSWR			0x07

#define RN5T618_PONHIS			0x09
@@ -38,6 +39,7 @@ 
#define RN5T618_DC1_SLOT		0x16

#define RN5T618_DC2_SLOT		0x17

#define RN5T618_DC3_SLOT		0x18

#define RN5T618_DC4_SLOT		0x19

#define RN5T618_LDO1_SLOT		0x1b

#define RN5T618_LDO2_SLOT		0x1c

#define RN5T618_LDO3_SLOT		0x1d
@@ -54,12 +56,16 @@ 
#define RN5T618_DC2CTL2			0x2f

#define RN5T618_DC3CTL			0x30

#define RN5T618_DC3CTL2			0x31

#define RN5T618_DC4CTL			0x32

#define RN5T618_DC4CTL2			0x33

#define RN5T618_DC1DAC			0x36

#define RN5T618_DC2DAC			0x37

#define RN5T618_DC3DAC			0x38

#define RN5T618_DC4DAC			0x39

#define RN5T618_DC1DAC_SLP		0x3b

#define RN5T618_DC2DAC_SLP		0x3c

#define RN5T618_DC3DAC_SLP		0x3d

#define RN5T618_DC4DAC_SLP		0x3e

#define RN5T618_DCIREN			0x40

#define RN5T618_DCIRQ			0x41

#define RN5T618_DCIRMON			0x42
@@ -221,8 +227,14 @@ enum { 
	RN5T618_REG_NUM,

};



enum {

	RN5T567 = 0,

	RN5T618,

};



struct rn5t618 {

	struct regmap *regmap;

	long variant;

};



#endif /* __LINUX_MFD_RN5T618_H */