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Commit b45b719e authored by Andrew F. Davis's avatar Andrew F. Davis Committed by Lee Jones
Browse files

mfd: tps65086: Add driver for the TPS65086 PMIC 



Add support for the TPS65912 device. It provides communication
through I2C and contains the following components:

 - Regulators
 - Load switches
 - GPO controller

Signed-off-by: default avatarAndrew F. Davis <afd@ti.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent a85b9e0b

drivers/mfd/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -1130,6 +1130,19 @@ config TPS6507X 
	  This driver can also be built as a module.  If so, the module

	  will be called tps6507x.



config MFD_TPS65086

	tristate "TI TPS65086 Power Management Integrated Chips (PMICs)"

	select REGMAP

	select REGMAP_IRQ

	select REGMAP_I2C

	depends on I2C

	help

	  If you say yes here you get support for the TPS65086 series of

	  Power Management chips.

	  This driver provides common support for accessing the device,

	  additional drivers must be enabled in order to use the

	  functionality of the device.



config TPS65911_COMPARATOR

	tristate

drivers/mfd/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -70,6 +70,7 @@ obj-$(CONFIG_MFD_WM8994) += wm8994.o 
obj-$(CONFIG_TPS6105X)		+= tps6105x.o

obj-$(CONFIG_TPS65010)		+= tps65010.o

obj-$(CONFIG_TPS6507X)		+= tps6507x.o

obj-$(CONFIG_MFD_TPS65086)	+= tps65086.o

obj-$(CONFIG_MFD_TPS65217)	+= tps65217.o

obj-$(CONFIG_MFD_TPS65218)	+= tps65218.o

obj-$(CONFIG_MFD_TPS65910)	+= tps65910.o

drivers/mfd/tps65086.c

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/*

 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/

 *	Andrew F. Davis <afd@ti.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.

 *

 * This program is distributed "as is" WITHOUT ANY WARRANTY of any

 * kind, whether expressed or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License version 2 for more details.

 *

 * Based on the TPS65912 driver

 */



#include <linux/i2c.h>

#include <linux/interrupt.h>

#include <linux/mfd/core.h>

#include <linux/module.h>



#include <linux/mfd/tps65086.h>



static const struct mfd_cell tps65086_cells[] = {

	{ .name = "tps65086-regulator", },

	{ .name = "tps65086-gpio", },

};



static const struct regmap_range tps65086_yes_ranges[] = {

	regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),

	regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),

	regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),

	regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),

};



static const struct regmap_access_table tps65086_volatile_table = {

	.yes_ranges = tps65086_yes_ranges,

	.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),

};



static const struct regmap_config tps65086_regmap_config = {

	.reg_bits = 8,

	.val_bits = 8,

	.cache_type = REGCACHE_RBTREE,

	.volatile_table = &tps65086_volatile_table,

};



static const struct regmap_irq tps65086_irqs[] = {

	REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),

	REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),

	REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),

};



static struct regmap_irq_chip tps65086_irq_chip = {

	.name = "tps65086",

	.status_base = TPS65086_IRQ,

	.mask_base = TPS65086_IRQ_MASK,

	.ack_base = TPS65086_IRQ,

	.init_ack_masked = true,

	.num_regs = 1,

	.irqs = tps65086_irqs,

	.num_irqs = ARRAY_SIZE(tps65086_irqs),

};



static const struct of_device_id tps65086_of_match_table[] = {

	{ .compatible = "ti,tps65086", },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, tps65086_of_match_table);



static int tps65086_probe(struct i2c_client *client,

			  const struct i2c_device_id *ids)

{

	struct tps65086 *tps;

	unsigned int version;

	int ret;



	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);

	if (!tps)

		return -ENOMEM;



	i2c_set_clientdata(client, tps);

	tps->dev = &client->dev;

	tps->irq = client->irq;



	tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);

	if (IS_ERR(tps->regmap)) {

		dev_err(tps->dev, "Failed to initialize register map\n");

		return PTR_ERR(tps->regmap);

	}



	ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version);

	if (ret) {

		dev_err(tps->dev, "Failed to read revision register\n");

		return ret;

	}



	dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",

		 (version & TPS65086_DEVICEID_PART_MASK),

		 (char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A',

		 (version & TPS65086_DEVICEID_REV_MASK) >> 6);



	ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,

				  &tps65086_irq_chip, &tps->irq_data);

	if (ret) {

		dev_err(tps->dev, "Failed to register IRQ chip\n");

		return ret;

	}



	ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,

			      ARRAY_SIZE(tps65086_cells), NULL, 0,

			      regmap_irq_get_domain(tps->irq_data));

	if (ret) {

		regmap_del_irq_chip(tps->irq, tps->irq_data);

		return ret;

	}



	return 0;

}



static int tps65086_remove(struct i2c_client *client)

{

	struct tps65086 *tps = i2c_get_clientdata(client);



	regmap_del_irq_chip(tps->irq, tps->irq_data);



	return 0;

}



static const struct i2c_device_id tps65086_id_table[] = {

	{ "tps65086", 0 },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(i2c, tps65086_id_table);



static struct i2c_driver tps65086_driver = {

	.driver		= {

		.name	= "tps65086",

		.of_match_table = tps65086_of_match_table,

	},

	.probe		= tps65086_probe,

	.remove		= tps65086_remove,

	.id_table       = tps65086_id_table,

};

module_i2c_driver(tps65086_driver);



MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");

MODULE_DESCRIPTION("TPS65086 PMIC Driver");

MODULE_LICENSE("GPL v2");

include/linux/mfd/tps65086.h

0 → 100644
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/*

 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/

 *	Andrew F. Davis <afd@ti.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.

 *

 * This program is distributed "as is" WITHOUT ANY WARRANTY of any

 * kind, whether expressed or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License version 2 for more details.

 *

 * Based on the TPS65912 driver

 */



#ifndef __LINUX_MFD_TPS65086_H

#define __LINUX_MFD_TPS65086_H



#include <linux/device.h>

#include <linux/regmap.h>



/* List of registers for TPS65086 */

#define TPS65086_DEVICEID		0x01

#define TPS65086_IRQ			0x02

#define TPS65086_IRQ_MASK		0x03

#define TPS65086_PMICSTAT		0x04

#define TPS65086_SHUTDNSRC		0x05

#define TPS65086_BUCK1CTRL		0x20

#define TPS65086_BUCK2CTRL		0x21

#define TPS65086_BUCK3DECAY		0x22

#define TPS65086_BUCK3VID		0x23

#define TPS65086_BUCK3SLPCTRL		0x24

#define TPS65086_BUCK4CTRL		0x25

#define TPS65086_BUCK5CTRL		0x26

#define TPS65086_BUCK6CTRL		0x27

#define TPS65086_LDOA2CTRL		0x28

#define TPS65086_LDOA3CTRL		0x29

#define TPS65086_DISCHCTRL1		0x40

#define TPS65086_DISCHCTRL2		0x41

#define TPS65086_DISCHCTRL3		0x42

#define TPS65086_PG_DELAY1		0x43

#define TPS65086_FORCESHUTDN		0x91

#define TPS65086_BUCK1SLPCTRL		0x92

#define TPS65086_BUCK2SLPCTRL		0x93

#define TPS65086_BUCK4VID		0x94

#define TPS65086_BUCK4SLPVID		0x95

#define TPS65086_BUCK5VID		0x96

#define TPS65086_BUCK5SLPVID		0x97

#define TPS65086_BUCK6VID		0x98

#define TPS65086_BUCK6SLPVID		0x99

#define TPS65086_LDOA2VID		0x9A

#define TPS65086_LDOA3VID		0x9B

#define TPS65086_BUCK123CTRL		0x9C

#define TPS65086_PG_DELAY2		0x9D

#define TPS65086_PIN_EN_MASK1		0x9E

#define TPS65086_PIN_EN_MASK2		0x9F

#define TPS65086_SWVTT_EN		0x9F

#define TPS65086_PIN_EN_OVR1		0xA0

#define TPS65086_PIN_EN_OVR2		0xA1

#define TPS65086_GPOCTRL		0xA1

#define TPS65086_PWR_FAULT_MASK1	0xA2

#define TPS65086_PWR_FAULT_MASK2	0xA3

#define TPS65086_GPO1PG_CTRL1		0xA4

#define TPS65086_GPO1PG_CTRL2		0xA5

#define TPS65086_GPO4PG_CTRL1		0xA6

#define TPS65086_GPO4PG_CTRL2		0xA7

#define TPS65086_GPO2PG_CTRL1		0xA8

#define TPS65086_GPO2PG_CTRL2		0xA9

#define TPS65086_GPO3PG_CTRL1		0xAA

#define TPS65086_GPO3PG_CTRL2		0xAB

#define TPS65086_LDOA1CTRL		0xAE

#define TPS65086_PG_STATUS1		0xB0

#define TPS65086_PG_STATUS2		0xB1

#define TPS65086_PWR_FAULT_STATUS1	0xB2

#define TPS65086_PWR_FAULT_STATUS2	0xB3

#define TPS65086_TEMPCRIT		0xB4

#define TPS65086_TEMPHOT		0xB5

#define TPS65086_OC_STATUS		0xB6



/* IRQ Register field definitions */

#define TPS65086_IRQ_DIETEMP_MASK	BIT(0)

#define TPS65086_IRQ_SHUTDN_MASK	BIT(3)

#define TPS65086_IRQ_FAULT_MASK		BIT(7)



/* DEVICEID Register field definitions */

#define TPS65086_DEVICEID_PART_MASK	GENMASK(3, 0)

#define TPS65086_DEVICEID_OTP_MASK	GENMASK(5, 4)

#define TPS65086_DEVICEID_REV_MASK	GENMASK(7, 6)



/* VID Masks */

#define BUCK_VID_MASK			GENMASK(7, 1)

#define VDOA1_VID_MASK			GENMASK(4, 1)

#define VDOA23_VID_MASK			GENMASK(3, 0)



/* Define the TPS65086 IRQ numbers */

enum tps65086_irqs {

	TPS65086_IRQ_DIETEMP,

	TPS65086_IRQ_SHUTDN,

	TPS65086_IRQ_FAULT,

};



/**

 * struct tps65086 - state holder for the tps65086 driver

 *

 * Device data may be used to access the TPS65086 chip

 */

struct tps65086 {

	struct device *dev;

	struct regmap *regmap;



	/* IRQ Data */

	int irq;

	struct regmap_irq_chip_data *irq_data;

};



#endif /* __LINUX_MFD_TPS65086_H */