Re: [PATCH 2/3] mfd: tps65912: Rewrite driver adding DT support and using regmap

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On Tue, 15 Sep 2015, Andrew F. Davis wrote:

> The old driver does not support DT. Rewrite the driver adding DT support
> and use modern kernel features such as regmap and related helpers.
> 
> Signed-off-by: Andrew F. Davis <afd@xxxxxx>
> ---
>  drivers/gpio/gpio-tps65912.c           | 291 ++++++------
>  drivers/mfd/Kconfig                    |  20 +-
>  drivers/mfd/Makefile                   |   3 +-
>  drivers/mfd/tps65912-core.c            | 288 +++++-------
>  drivers/mfd/tps65912-i2c.c             | 233 ++++------
>  drivers/mfd/tps65912-irq.c             | 217 ---------
>  drivers/mfd/tps65912-spi.c             | 236 ++++------
>  drivers/regulator/tps65912-regulator.c | 783 ++++++++++-----------------------
>  include/linux/mfd/tps65912.h           | 256 +++++++----
>  9 files changed, 854 insertions(+), 1473 deletions(-)
>  rewrite drivers/gpio/gpio-tps65912.c (68%)
>  rewrite drivers/mfd/tps65912-core.c (96%)
>  rewrite drivers/mfd/tps65912-i2c.c (92%)
>  delete mode 100644 drivers/mfd/tps65912-irq.c
>  rewrite drivers/mfd/tps65912-spi.c (91%)
>  rewrite drivers/regulator/tps65912-regulator.c (94%)

Is there really no other way to split this up?

> diff --git a/drivers/gpio/gpio-tps65912.c b/drivers/gpio/gpio-tps65912.c
> dissimilarity index 68%
> index 9cdbc0c..a15d4e7 100644
> --- a/drivers/gpio/gpio-tps65912.c
> +++ b/drivers/gpio/gpio-tps65912.c
> @@ -1,153 +1,138 @@
> -/*
> - * Copyright 2011 Texas Instruments Inc.
> - *
> - * Author: Margarita Olaya <magi@xxxxxxxxxxxxxxx>
> - *
> - *  This program is free software; you can redistribute it and/or modify it
> - *  under  the terms of the GNU General  Public License as published by the
> - *  Free Software Foundation;  either version 2 of the License, or (at your
> - *  option) any later version.
> - *
> - * This driver is based on wm8350 implementation.
> - */
> -
> -#include <linux/kernel.h>
> -#include <linux/module.h>
> -#include <linux/errno.h>
> -#include <linux/gpio.h>
> -#include <linux/mfd/core.h>
> -#include <linux/platform_device.h>
> -#include <linux/seq_file.h>
> -#include <linux/slab.h>
> -#include <linux/mfd/tps65912.h>
> -
> -struct tps65912_gpio_data {
> -	struct tps65912 *tps65912;
> -	struct gpio_chip gpio_chip;
> -};
> -
> -#define to_tgd(gc) container_of(gc, struct tps65912_gpio_data, gpio_chip)
> -
> -static int tps65912_gpio_get(struct gpio_chip *gc, unsigned offset)
> -{
> -	struct tps65912_gpio_data *tps65912_gpio = to_tgd(gc);
> -	struct tps65912 *tps65912 = tps65912_gpio->tps65912;
> -	int val;
> -
> -	val = tps65912_reg_read(tps65912, TPS65912_GPIO1 + offset);
> -
> -	if (val & GPIO_STS_MASK)
> -		return 1;
> -
> -	return 0;
> -}
> -
> -static void tps65912_gpio_set(struct gpio_chip *gc, unsigned offset,
> -			      int value)
> -{
> -	struct tps65912_gpio_data *tps65912_gpio = to_tgd(gc);
> -	struct tps65912 *tps65912 = tps65912_gpio->tps65912;
> -
> -	if (value)
> -		tps65912_set_bits(tps65912, TPS65912_GPIO1 + offset,
> -							GPIO_SET_MASK);
> -	else
> -		tps65912_clear_bits(tps65912, TPS65912_GPIO1 + offset,
> -								GPIO_SET_MASK);
> -}
> -
> -static int tps65912_gpio_output(struct gpio_chip *gc, unsigned offset,
> -				int value)
> -{
> -	struct tps65912_gpio_data *tps65912_gpio = to_tgd(gc);
> -	struct tps65912 *tps65912 = tps65912_gpio->tps65912;
> -
> -	/* Set the initial value */
> -	tps65912_gpio_set(gc, offset, value);
> -
> -	return tps65912_set_bits(tps65912, TPS65912_GPIO1 + offset,
> -								GPIO_CFG_MASK);
> -}
> -
> -static int tps65912_gpio_input(struct gpio_chip *gc, unsigned offset)
> -{
> -	struct tps65912_gpio_data *tps65912_gpio = to_tgd(gc);
> -	struct tps65912 *tps65912 = tps65912_gpio->tps65912;
> -
> -	return tps65912_clear_bits(tps65912, TPS65912_GPIO1 + offset,
> -								GPIO_CFG_MASK);
> -}
> -
> -static struct gpio_chip template_chip = {
> -	.label			= "tps65912",
> -	.owner			= THIS_MODULE,
> -	.direction_input	= tps65912_gpio_input,
> -	.direction_output	= tps65912_gpio_output,
> -	.get			= tps65912_gpio_get,
> -	.set			= tps65912_gpio_set,
> -	.can_sleep		= true,
> -	.ngpio			= 5,
> -	.base			= -1,
> -};
> -
> -static int tps65912_gpio_probe(struct platform_device *pdev)
> -{
> -	struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent);
> -	struct tps65912_board *pdata = dev_get_platdata(tps65912->dev);
> -	struct tps65912_gpio_data *tps65912_gpio;
> -	int ret;
> -
> -	tps65912_gpio = devm_kzalloc(&pdev->dev, sizeof(*tps65912_gpio),
> -				     GFP_KERNEL);
> -	if (tps65912_gpio == NULL)
> -		return -ENOMEM;
> -
> -	tps65912_gpio->tps65912 = tps65912;
> -	tps65912_gpio->gpio_chip = template_chip;
> -	tps65912_gpio->gpio_chip.dev = &pdev->dev;
> -	if (pdata && pdata->gpio_base)
> -		tps65912_gpio->gpio_chip.base = pdata->gpio_base;
> -
> -	ret = gpiochip_add(&tps65912_gpio->gpio_chip);
> -	if (ret < 0) {
> -		dev_err(&pdev->dev, "Failed to register gpiochip, %d\n", ret);
> -		return ret;
> -	}
> -
> -	platform_set_drvdata(pdev, tps65912_gpio);
> -
> -	return ret;
> -}
> -
> -static int tps65912_gpio_remove(struct platform_device *pdev)
> -{
> -	struct tps65912_gpio_data  *tps65912_gpio = platform_get_drvdata(pdev);
> -
> -	gpiochip_remove(&tps65912_gpio->gpio_chip);
> -	return 0;
> -}
> -
> -static struct platform_driver tps65912_gpio_driver = {
> -	.driver = {
> -		.name = "tps65912-gpio",
> -	},
> -	.probe = tps65912_gpio_probe,
> -	.remove = tps65912_gpio_remove,
> -};
> -
> -static int __init tps65912_gpio_init(void)
> -{
> -	return platform_driver_register(&tps65912_gpio_driver);
> -}
> -subsys_initcall(tps65912_gpio_init);
> -
> -static void __exit tps65912_gpio_exit(void)
> -{
> -	platform_driver_unregister(&tps65912_gpio_driver);
> -}
> -module_exit(tps65912_gpio_exit);
> -
> -MODULE_AUTHOR("Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>");
> -MODULE_DESCRIPTION("GPIO interface for TPS65912 PMICs");
> -MODULE_LICENSE("GPL v2");
> -MODULE_ALIAS("platform:tps65912-gpio");
> +/*
> + * gpio-tps65912.c -- TI TPS65912x GPIO Driver
> + *
> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Andrew F. Davis <afd@xxxxxx>
> + *
> + * 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 Arizona GPIO driver and the previous TPS65912 driver by
> + * Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> + */
> +
> +#include <linux/gpio.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +
> +#include <linux/mfd/tps65912.h>
> +
> +struct tps65912_gpio {
> +	struct tps65912 *tps;
> +	struct gpio_chip gpio_chip;
> +};
> +
> +#define to_gpio(gc) container_of(gc, struct tps65912_gpio, gpio_chip)
> +
> +static int tps65912_gpio_get(struct gpio_chip *gc, unsigned offset)
> +{
> +	struct tps65912_gpio *gpio = to_gpio(gc);
> +	int ret, val;
> +
> +	ret = regmap_read(gpio->tps->regmap, TPS65912_GPIO1 + offset, &val);
> +	if (ret < 0)
> +		return ret;
> +
> +	return val & GPIO_STS_MASK;
> +}
> +
> +static void tps65912_gpio_set(struct gpio_chip *gc, unsigned offset,
> +			      int value)
> +{
> +	struct tps65912_gpio *gpio = to_gpio(gc);
> +
> +	regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset,
> +			   GPIO_SET_MASK, value ? GPIO_SET_MASK : 0);
> +}
> +
> +static int tps65912_gpio_output(struct gpio_chip *gc, unsigned offset,
> +				int value)
> +{
> +	struct tps65912_gpio *gpio = to_gpio(gc);
> +
> +	/* Set the initial value */
> +	tps65912_gpio_set(gc, offset, value);
> +
> +	return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset,
> +				  GPIO_CFG_MASK, GPIO_CFG_MASK);
> +}
> +
> +static int tps65912_gpio_input(struct gpio_chip *gc, unsigned offset)
> +{
> +	struct tps65912_gpio *gpio = to_gpio(gc);
> +
> +	return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset,
> +				  GPIO_CFG_MASK, 0);
> +}
> +
> +static const struct of_device_id tps65912_gpio_of_match_table[] = {
> +	{ .compatible = "ti,tps65912-gpio", },
> +	{ /*sentinel*/ },
> +};
> +MODULE_DEVICE_TABLE(of, tps65912_gpio_of_match_table);
> +
> +static struct gpio_chip template_chip = {
> +	.label			= "tps65912-gpio",
> +	.owner			= THIS_MODULE,
> +	.direction_input	= tps65912_gpio_input,
> +	.direction_output	= tps65912_gpio_output,
> +	.get			= tps65912_gpio_get,
> +	.set			= tps65912_gpio_set,
> +	.can_sleep		= true,
> +	.ngpio			= 5,
> +	.base			= -1,
> +};
> +
> +static int tps65912_gpio_probe(struct platform_device *pdev)
> +{
> +	struct tps65912_gpio *gpio;
> +	int ret;
> +
> +	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
> +	if (!gpio)
> +		return -ENOMEM;
> +
> +	gpio->tps = dev_get_drvdata(pdev->dev.parent);
> +	gpio->gpio_chip = template_chip;
> +	ret = gpiochip_add(&gpio->gpio_chip);
> +	if (ret < 0) {
> +		dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
> +		return ret;
> +	}
> +
> +	platform_set_drvdata(pdev, gpio);
> +
> +	return 0;
> +}
> +
> +static int tps65912_gpio_remove(struct platform_device *pdev)
> +{
> +	struct tps65912_gpio *gpio = platform_get_drvdata(pdev);
> +
> +	gpiochip_remove(&gpio->gpio_chip);
> +
> +	return 0;
> +}
> +
> +static struct platform_driver tps65912_gpio_driver = {
> +	.driver = {
> +		.name = "tps65912-gpio",
> +		.of_match_table = tps65912_gpio_of_match_table,
> +	},
> +	.probe = tps65912_gpio_probe,
> +	.remove = tps65912_gpio_remove,
> +};
> +
> +module_platform_driver(tps65912_gpio_driver);
> +
> +MODULE_AUTHOR("Andrew F. Davis <afd@xxxxxx>");
> +MODULE_DESCRIPTION("TPS65912 GPIO driver");
> +MODULE_ALIAS("platform:tps65912-gpio");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 99d6367..3a36b37 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1168,27 +1168,25 @@ config MFD_TPS65910
>  	  Power Management chips.
>  
>  config MFD_TPS65912
> -	bool "TI TPS65912 Power Management chip"
> -	depends on GPIOLIB
> +	select REGMAP
> +	select REGMAP_IRQ
>  	select MFD_CORE
> -	help
> -	  If you say yes here you get support for the TPS65912 series of
> -	  PM chips.
> +	tristate

Better to put this at the top, as excepted.

>  config MFD_TPS65912_I2C
> -	bool "TI TPS65912 Power Management chip with I2C"
> -	select MFD_CORE
> +	tristate "TI TPS65912 Power Management chip with I2C"
>  	select MFD_TPS65912
> -	depends on I2C=y && GPIOLIB
> +	select REGMAP_I2C
> +	depends on I2C
>  	help
>  	  If you say yes here you get support for the TPS65912 series of
>  	  PM chips with I2C interface.
>  
>  config MFD_TPS65912_SPI
> -	bool "TI TPS65912 Power Management chip with SPI"
> -	select MFD_CORE
> +	tristate "TI TPS65912 Power Management chip with SPI"
>  	select MFD_TPS65912
> -	depends on SPI_MASTER && GPIOLIB
> +	select REGMAP_SPI
> +	depends on SPI_MASTER
>  	help
>  	  If you say yes here you get support for the TPS65912 series of
>  	  PM chips with SPI interface.
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index a59e3fc..49c3530 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -69,8 +69,7 @@ obj-$(CONFIG_TPS6507X)		+= tps6507x.o
>  obj-$(CONFIG_MFD_TPS65217)	+= tps65217.o
>  obj-$(CONFIG_MFD_TPS65218)	+= tps65218.o
>  obj-$(CONFIG_MFD_TPS65910)	+= tps65910.o
> -tps65912-objs                   := tps65912-core.o tps65912-irq.o
> -obj-$(CONFIG_MFD_TPS65912)	+= tps65912.o
> +obj-$(CONFIG_MFD_TPS65912)	+= tps65912-core.o
>  obj-$(CONFIG_MFD_TPS65912_I2C)	+= tps65912-i2c.o
>  obj-$(CONFIG_MFD_TPS65912_SPI)  += tps65912-spi.o
>  obj-$(CONFIG_MFD_TPS80031)	+= tps80031.o
> diff --git a/drivers/mfd/tps65912-core.c b/drivers/mfd/tps65912-core.c
> dissimilarity index 96%
> index 1f82d60..06b27f5 100644
> --- a/drivers/mfd/tps65912-core.c
> +++ b/drivers/mfd/tps65912-core.c
> @@ -1,175 +1,113 @@
> -/*
> - * tps65912-core.c  --  TI TPS65912x
> - *
> - * Copyright 2011 Texas Instruments Inc.
> - *
> - * Author: Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> - *
> - *  This program is free software; you can redistribute it and/or modify it
> - *  under  the terms of the GNU General  Public License as published by the
> - *  Free Software Foundation;  either version 2 of the License, or (at your
> - *  option) any later version.
> - *
> - *  This driver is based on wm8350 implementation.
> - */
> -
> -#include <linux/module.h>
> -#include <linux/moduleparam.h>
> -#include <linux/slab.h>
> -#include <linux/gpio.h>
> -#include <linux/mfd/core.h>
> -#include <linux/mfd/tps65912.h>
> -
> -static const struct mfd_cell tps65912s[] = {
> -	{
> -		.name = "tps65912-pmic",
> -	},
> -};
> -
> -int tps65912_set_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
> -{
> -	u8 data;
> -	int err;
> -
> -	mutex_lock(&tps65912->io_mutex);
> -
> -	err = tps65912->read(tps65912, reg, 1, &data);
> -	if (err) {
> -		dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
> -		goto out;
> -	}
> -
> -	data |= mask;
> -	err = tps65912->write(tps65912, reg, 1, &data);
> -	if (err)
> -		dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
> -
> -out:
> -	mutex_unlock(&tps65912->io_mutex);
> -	return err;
> -}
> -EXPORT_SYMBOL_GPL(tps65912_set_bits);
> -
> -int tps65912_clear_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
> -{
> -	u8 data;
> -	int err;
> -
> -	mutex_lock(&tps65912->io_mutex);
> -	err = tps65912->read(tps65912, reg, 1, &data);
> -	if (err) {
> -		dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
> -		goto out;
> -	}
> -
> -	data &= ~mask;
> -	err = tps65912->write(tps65912, reg, 1, &data);
> -	if (err)
> -		dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
> -
> -out:
> -	mutex_unlock(&tps65912->io_mutex);
> -	return err;
> -}
> -EXPORT_SYMBOL_GPL(tps65912_clear_bits);
> -
> -static inline int tps65912_read(struct tps65912 *tps65912, u8 reg)
> -{
> -	u8 val;
> -	int err;
> -
> -	err = tps65912->read(tps65912, reg, 1, &val);
> -	if (err < 0)
> -		return err;
> -
> -	return val;
> -}
> -
> -static inline int tps65912_write(struct tps65912 *tps65912, u8 reg, u8 val)
> -{
> -	return tps65912->write(tps65912, reg, 1, &val);
> -}
> -
> -int tps65912_reg_read(struct tps65912 *tps65912, u8 reg)
> -{
> -	int data;
> -
> -	mutex_lock(&tps65912->io_mutex);
> -
> -	data = tps65912_read(tps65912, reg);
> -	if (data < 0)
> -		dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
> -
> -	mutex_unlock(&tps65912->io_mutex);
> -	return data;
> -}
> -EXPORT_SYMBOL_GPL(tps65912_reg_read);
> -
> -int tps65912_reg_write(struct tps65912 *tps65912, u8 reg, u8 val)
> -{
> -	int err;
> -
> -	mutex_lock(&tps65912->io_mutex);
> -
> -	err = tps65912_write(tps65912, reg, val);
> -	if (err < 0)
> -		dev_err(tps65912->dev, "Write for reg 0x%x failed\n", reg);
> -
> -	mutex_unlock(&tps65912->io_mutex);
> -	return err;
> -}
> -EXPORT_SYMBOL_GPL(tps65912_reg_write);
> -
> -int tps65912_device_init(struct tps65912 *tps65912)
> -{
> -	struct tps65912_board *pmic_plat_data = dev_get_platdata(tps65912->dev);
> -	struct tps65912_platform_data *init_data;
> -	int ret, dcdc_avs, value;
> -
> -	init_data = kzalloc(sizeof(struct tps65912_platform_data), GFP_KERNEL);
> -	if (init_data == NULL)
> -		return -ENOMEM;
> -
> -	mutex_init(&tps65912->io_mutex);
> -	dev_set_drvdata(tps65912->dev, tps65912);
> -
> -	dcdc_avs = (pmic_plat_data->is_dcdc1_avs << 0 |
> -			pmic_plat_data->is_dcdc2_avs  << 1 |
> -				pmic_plat_data->is_dcdc3_avs << 2 |
> -					pmic_plat_data->is_dcdc4_avs << 3);
> -	if (dcdc_avs) {
> -		tps65912->read(tps65912, TPS65912_I2C_SPI_CFG, 1, &value);
> -		dcdc_avs |= value;
> -		tps65912->write(tps65912, TPS65912_I2C_SPI_CFG, 1, &dcdc_avs);
> -	}
> -
> -	ret = mfd_add_devices(tps65912->dev, -1,
> -			      tps65912s, ARRAY_SIZE(tps65912s),
> -			      NULL, 0, NULL);
> -	if (ret < 0)
> -		goto err;
> -
> -	init_data->irq = pmic_plat_data->irq;
> -	init_data->irq_base = pmic_plat_data->irq_base;
> -	ret = tps65912_irq_init(tps65912, init_data->irq, init_data);
> -	if (ret < 0)
> -		goto err;
> -
> -	kfree(init_data);
> -	return ret;
> -
> -err:
> -	kfree(init_data);
> -	mfd_remove_devices(tps65912->dev);
> -	return ret;
> -}
> -
> -void tps65912_device_exit(struct tps65912 *tps65912)
> -{
> -	mfd_remove_devices(tps65912->dev);
> -	tps65912_irq_exit(tps65912);
> -}
> -
> -MODULE_AUTHOR("Margarita Olaya	<magi@xxxxxxxxxxxxxxx>");
> -MODULE_DESCRIPTION("TPS65912x chip family multi-function driver");
> -MODULE_LICENSE("GPL");
> +/*
> + * tps65912-i2c.c -- Core functions for TI TPS65912x PMIC

Please remove the filename, as these have a habit of becoming
incorrect.  I think it's even wrong here isn't it?

> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Andrew F. Davis <afd@xxxxxx>
> + *
> + * 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 TPS65218 driver and the previous TPS65912 driver by
> + * Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> + */
> +
> +#include <linux/interrupt.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +

No need for the '\n'.

> +#include <linux/mfd/tps65912.h>
> +
> +#define TPS65912_IRQ(_name, _reg, _offset)	\
> +	[TPS65912_IRQ_ ## _name] = {	\
> +		.mask = TPS65912_ ## _reg ## _ ## _name,	\
> +		.reg_offset = _offset,	\
> +	}

If you find this useful, then others will too.

Please submit this to Mark Brown.

> +static const struct regmap_irq tps65912_irqs[] = {
> +	/* INT_STS IRQs */
> +	TPS65912_IRQ(PWRHOLD_F, INT_STS, 0),
> +	TPS65912_IRQ(VMON, INT_STS, 0),
> +	TPS65912_IRQ(PWRON, INT_STS, 0),
> +	TPS65912_IRQ(PWRON_LP, INT_STS, 0),
> +	TPS65912_IRQ(PWRHOLD_R, INT_STS, 0),
> +	TPS65912_IRQ(HOTDIE, INT_STS, 0),
> +	TPS65912_IRQ(GPIO1_R, INT_STS, 0),
> +	TPS65912_IRQ(GPIO1_F, INT_STS, 0),
> +	/* INT_STS2 IRQs */
> +	TPS65912_IRQ(GPIO2_R, INT_STS2, 1),
> +	TPS65912_IRQ(GPIO2_F, INT_STS2, 1),
> +	TPS65912_IRQ(GPIO3_R, INT_STS2, 1),
> +	TPS65912_IRQ(GPIO3_F, INT_STS2, 1),
> +	TPS65912_IRQ(GPIO4_R, INT_STS2, 1),
> +	TPS65912_IRQ(GPIO4_F, INT_STS2, 1),
> +	TPS65912_IRQ(GPIO5_R, INT_STS2, 1),
> +	TPS65912_IRQ(GPIO5_F, INT_STS2, 1),
> +	/* INT_STS3 IRQs */
> +	TPS65912_IRQ(PGOOD_DCDC1, INT_STS3, 2),
> +	TPS65912_IRQ(PGOOD_DCDC2, INT_STS3, 2),
> +	TPS65912_IRQ(PGOOD_DCDC3, INT_STS3, 2),
> +	TPS65912_IRQ(PGOOD_DCDC4, INT_STS3, 2),
> +	TPS65912_IRQ(PGOOD_LDO1, INT_STS3, 2),
> +	TPS65912_IRQ(PGOOD_LDO2, INT_STS3, 2),
> +	TPS65912_IRQ(PGOOD_LDO3, INT_STS3, 2),
> +	TPS65912_IRQ(PGOOD_LDO4, INT_STS3, 2),
> +	/* INT_STS4 IRQs */
> +	TPS65912_IRQ(PGOOD_LDO5, INT_STS4, 3),
> +	TPS65912_IRQ(PGOOD_LDO6, INT_STS4, 3),
> +	TPS65912_IRQ(PGOOD_LDO7, INT_STS4, 3),
> +	TPS65912_IRQ(PGOOD_LDO8, INT_STS4, 3),
> +	TPS65912_IRQ(PGOOD_LDO9, INT_STS4, 3),
> +	TPS65912_IRQ(PGOOD_LDO10, INT_STS4, 3),
> +};
> +
> +static struct regmap_irq_chip tps65912_irq_chip = {
> +	.name = "tps65912",
> +	.irqs = tps65912_irqs,
> +	.num_irqs = ARRAY_SIZE(tps65912_irqs),
> +

Rid the '\n' please.

> +	.num_regs = 4,

Why do you have 2 num_regs entries?

> +	.irq_reg_stride = 2,
> +	.mask_base = TPS65912_INT_MSK,
> +	.status_base = TPS65912_INT_STS,
> +	.ack_base = TPS65912_INT_STS,
> +	.init_ack_masked = true,
> +};
> +
> +int tps65912_device_init(struct tps65912 *tps)
> +{
> +	int ret;
> +
> +	ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
> +				  &tps65912_irq_chip, &tps->irq_data);
> +	if (ret < 0)
> +		return ret;
> +
> +	ret = of_platform_populate(tps->dev->of_node, NULL, NULL, tps->dev);
> +	if (ret < 0)
> +		goto err_irq;
> +
> +	return 0;
> +
> +err_irq:
> +	regmap_del_irq_chip(tps->irq, tps->irq_data);
> +
> +	return ret;
> +}
> +EXPORT_SYMBOL_GPL(tps65912_device_init);
> +
> +void tps65912_device_exit(struct tps65912 *tps)
> +{
> +	regmap_del_irq_chip(tps->irq, tps->irq_data);
> +}
> +EXPORT_SYMBOL_GPL(tps65912_device_exit);
> +
> +MODULE_AUTHOR("Andrew F. Davis <afd@xxxxxx>");
> +MODULE_DESCRIPTION("TPS65912x MFD Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/mfd/tps65912-i2c.c b/drivers/mfd/tps65912-i2c.c
> dissimilarity index 92%
> index 7e55640..feb1e5a 100644
> --- a/drivers/mfd/tps65912-i2c.c
> +++ b/drivers/mfd/tps65912-i2c.c
> @@ -1,139 +1,94 @@
> -/*
> - * tps65912-i2c.c  --  I2C access for TI TPS65912x PMIC
> - *
> - * Copyright 2011 Texas Instruments Inc.
> - *
> - * Author: Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> - *
> - *  This program is free software; you can redistribute it and/or modify it
> - *  under  the terms of the GNU General  Public License as published by the
> - *  Free Software Foundation;  either version 2 of the License, or (at your
> - *  option) any later version.
> - *
> - *  This driver is based on wm8350 implementation.
> - */
> -
> -#include <linux/module.h>
> -#include <linux/moduleparam.h>
> -#include <linux/init.h>
> -#include <linux/slab.h>
> -#include <linux/gpio.h>
> -#include <linux/i2c.h>
> -#include <linux/mfd/core.h>
> -#include <linux/mfd/tps65912.h>
> -
> -static int tps65912_i2c_read(struct tps65912 *tps65912, u8 reg,
> -				  int bytes, void *dest)
> -{
> -	struct i2c_client *i2c = tps65912->control_data;
> -	struct i2c_msg xfer[2];
> -	int ret;
> -
> -	/* Write register */
> -	xfer[0].addr = i2c->addr;
> -	xfer[0].flags = 0;
> -	xfer[0].len = 1;
> -	xfer[0].buf = &reg;
> -
> -	/* Read data */
> -	xfer[1].addr = i2c->addr;
> -	xfer[1].flags = I2C_M_RD;
> -	xfer[1].len = bytes;
> -	xfer[1].buf = dest;
> -
> -	ret = i2c_transfer(i2c->adapter, xfer, 2);
> -	if (ret == 2)
> -		ret = 0;
> -	else if (ret >= 0)
> -		ret = -EIO;
> -	return ret;
> -}
> -
> -static int tps65912_i2c_write(struct tps65912 *tps65912, u8 reg,
> -				   int bytes, void *src)
> -{
> -	struct i2c_client *i2c = tps65912->control_data;
> -	/* we add 1 byte for device register */
> -	u8 msg[TPS6591X_MAX_REGISTER + 1];
> -	int ret;
> -
> -	if (bytes > TPS6591X_MAX_REGISTER)
> -		return -EINVAL;
> -
> -	msg[0] = reg;
> -	memcpy(&msg[1], src, bytes);
> -
> -	ret = i2c_master_send(i2c, msg, bytes + 1);
> -	if (ret < 0)
> -		return ret;
> -	if (ret != bytes + 1)
> -		return -EIO;
> -
> -	return 0;
> -}
> -
> -static int tps65912_i2c_probe(struct i2c_client *i2c,
> -			    const struct i2c_device_id *id)
> -{
> -	struct tps65912 *tps65912;
> -
> -	tps65912 = devm_kzalloc(&i2c->dev,
> -				sizeof(struct tps65912), GFP_KERNEL);
> -	if (tps65912 == NULL)
> -		return -ENOMEM;
> -
> -	i2c_set_clientdata(i2c, tps65912);
> -	tps65912->dev = &i2c->dev;
> -	tps65912->control_data = i2c;
> -	tps65912->read = tps65912_i2c_read;
> -	tps65912->write = tps65912_i2c_write;
> -
> -	return tps65912_device_init(tps65912);
> -}
> -
> -static int tps65912_i2c_remove(struct i2c_client *i2c)
> -{
> -	struct tps65912 *tps65912 = i2c_get_clientdata(i2c);
> -
> -	tps65912_device_exit(tps65912);
> -
> -	return 0;
> -}
> -
> -static const struct i2c_device_id tps65912_i2c_id[] = {
> -	{"tps65912", 0 },
> -	{ }
> -};
> -MODULE_DEVICE_TABLE(i2c, tps65912_i2c_id);
> -
> -static struct i2c_driver tps65912_i2c_driver = {
> -	.driver = {
> -		   .name = "tps65912",
> -	},
> -	.probe = tps65912_i2c_probe,
> -	.remove = tps65912_i2c_remove,
> -	.id_table = tps65912_i2c_id,
> -};
> -
> -static int __init tps65912_i2c_init(void)
> -{
> -	int ret;
> -
> -	ret = i2c_add_driver(&tps65912_i2c_driver);
> -	if (ret != 0)
> -		pr_err("Failed to register TPS65912 I2C driver: %d\n", ret);
> -
> -	return ret;
> -}
> -/* init early so consumer devices can complete system boot */
> -subsys_initcall(tps65912_i2c_init);
> -
> -static void __exit tps65912_i2c_exit(void)
> -{
> -	i2c_del_driver(&tps65912_i2c_driver);
> -}
> -module_exit(tps65912_i2c_exit);
> -
> -MODULE_AUTHOR("Margarita Olaya	<magi@xxxxxxxxxxxxxxx>");
> -MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
> -MODULE_LICENSE("GPL");
> +/*
> + * tps65912-i2c.c -- I2C access driver for TI TPS65912x PMIC

Remove the filename please.

> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Andrew F. Davis <afd@xxxxxx>
> + *
> + * 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 TPS65218 driver and the previous TPS65912 driver by
> + * Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> + */
> +
> +#include <linux/i2c.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/regmap.h>
> +

Remove the '\n'.

> +#include <linux/mfd/tps65912.h>
> +
> +static const struct of_device_id tps65912_i2c_of_match_table[] = {
> +	{ .compatible = "ti,tps65912", },
> +	{ /*sentinel*/ }

No need for this comment.  We know what { } does.

> +};
> +
> +static int tps65912_i2c_probe(struct i2c_client *client,
> +			      const struct i2c_device_id *ids)
> +{
> +	struct tps65912 *tps;
> +	const struct of_device_id *match;
> +
> +	match = of_match_device(tps65912_i2c_of_match_table, &client->dev);
> +	if (!match) {
> +		dev_err(&client->dev, "Failed to find matching DT id\n");
> +		return -EINVAL;
> +	}

Why are you matching?

> +	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, &tps65912_regmap_config);
> +	if (IS_ERR(tps->regmap)) {
> +		int ret = PTR_ERR(tps->regmap);

Neater just to declare 'int ret' up the top like we always do.

> +		dev_err(tps->dev, "Failed to allocate register map: %d\n",
> +			ret);
> +		return ret;
> +	}
> +
> +	return tps65912_device_init(tps);
> +}
> +
> +static int tps65912_i2c_remove(struct i2c_client *client)
> +{
> +	struct tps65912 *tps = i2c_get_clientdata(client);
> +
> +	tps65912_device_exit(tps);

Why don't you have tps65912_device_exit() provide an error code and do:

  return tps65912_device_exit(tps);

> +	return 0;
> +}
> +
> +static const struct i2c_device_id tps65912_i2c_id_table[] = {
> +	{ "tps65912", TPS65912 },

This doesn't appear to be used?

> +	{ /*sentinel*/ },

As before.

> +};
> +MODULE_DEVICE_TABLE(i2c, tps65912_i2c_id_table);
> +
> +static struct i2c_driver tps65912_i2c_driver = {
> +	.driver		= {
> +		.name	= "tps65912",
> +		.of_match_table = tps65912_i2c_of_match_table,
> +	},
> +	.probe		= tps65912_i2c_probe,
> +	.remove		= tps65912_i2c_remove,
> +	.id_table       = tps65912_i2c_id_table,
> +};
> +
> +module_i2c_driver(tps65912_i2c_driver);
> +
> +MODULE_AUTHOR("Andrew F. Davis <afd@xxxxxx>");
> +MODULE_DESCRIPTION("TPS65912x I2C Interface Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/mfd/tps65912-irq.c b/drivers/mfd/tps65912-irq.c
> deleted file mode 100644
> index db2c29c..0000000
> --- a/drivers/mfd/tps65912-irq.c
> +++ /dev/null
> @@ -1,217 +0,0 @@
> -/*
> - * tps65912-irq.c  --  TI TPS6591x
> - *
> - * Copyright 2011 Texas Instruments Inc.
> - *
> - * Author: Margarita Olaya <magi@xxxxxxxxxxxxxxx>
> - *
> - *  This program is free software; you can redistribute it and/or modify it
> - *  under  the terms of the GNU General  Public License as published by the
> - *  Free Software Foundation;  either version 2 of the License, or (at your
> - *  option) any later version.
> - *
> - * This driver is based on wm8350 implementation.
> - */
> -
> -#include <linux/kernel.h>
> -#include <linux/module.h>
> -#include <linux/bug.h>
> -#include <linux/device.h>
> -#include <linux/interrupt.h>
> -#include <linux/irq.h>
> -#include <linux/gpio.h>
> -#include <linux/mfd/tps65912.h>
> -
> -static inline int irq_to_tps65912_irq(struct tps65912 *tps65912,
> -							int irq)
> -{
> -	return irq - tps65912->irq_base;
> -}
> -
> -/*
> - * This is a threaded IRQ handler so can access I2C/SPI.  Since the
> - * IRQ handler explicitly clears the IRQ it handles the IRQ line
> - * will be reasserted and the physical IRQ will be handled again if
> - * another interrupt is asserted while we run - in the normal course
> - * of events this is a rare occurrence so we save I2C/SPI reads. We're
> - * also assuming that it's rare to get lots of interrupts firing
> - * simultaneously so try to minimise I/O.
> - */
> -static irqreturn_t tps65912_irq(int irq, void *irq_data)
> -{
> -	struct tps65912 *tps65912 = irq_data;
> -	u32 irq_sts;
> -	u32 irq_mask;
> -	u8 reg;
> -	int i;
> -
> -
> -	tps65912->read(tps65912, TPS65912_INT_STS, 1, &reg);
> -	irq_sts = reg;
> -	tps65912->read(tps65912, TPS65912_INT_STS2, 1, &reg);
> -	irq_sts |= reg << 8;
> -	tps65912->read(tps65912, TPS65912_INT_STS3, 1, &reg);
> -	irq_sts |= reg << 16;
> -	tps65912->read(tps65912, TPS65912_INT_STS4, 1, &reg);
> -	irq_sts |= reg << 24;
> -
> -	tps65912->read(tps65912, TPS65912_INT_MSK, 1, &reg);
> -	irq_mask = reg;
> -	tps65912->read(tps65912, TPS65912_INT_MSK2, 1, &reg);
> -	irq_mask |= reg << 8;
> -	tps65912->read(tps65912, TPS65912_INT_MSK3, 1, &reg);
> -	irq_mask |= reg << 16;
> -	tps65912->read(tps65912, TPS65912_INT_MSK4, 1, &reg);
> -	irq_mask |= reg << 24;
> -
> -	irq_sts &= ~irq_mask;
> -	if (!irq_sts)
> -		return IRQ_NONE;
> -
> -	for (i = 0; i < tps65912->irq_num; i++) {
> -		if (!(irq_sts & (1 << i)))
> -			continue;
> -
> -		handle_nested_irq(tps65912->irq_base + i);
> -	}
> -
> -	/* Write the STS register back to clear IRQs we handled */
> -	reg = irq_sts & 0xFF;
> -	irq_sts >>= 8;
> -	if (reg)
> -		tps65912->write(tps65912, TPS65912_INT_STS, 1, &reg);
> -	reg = irq_sts & 0xFF;
> -	irq_sts >>= 8;
> -	if (reg)
> -		tps65912->write(tps65912, TPS65912_INT_STS2, 1, &reg);
> -	reg = irq_sts & 0xFF;
> -	irq_sts >>= 8;
> -	if (reg)
> -		tps65912->write(tps65912, TPS65912_INT_STS3, 1, &reg);
> -	reg = irq_sts & 0xFF;
> -	if (reg)
> -		tps65912->write(tps65912, TPS65912_INT_STS4, 1, &reg);
> -
> -	return IRQ_HANDLED;
> -}
> -
> -static void tps65912_irq_lock(struct irq_data *data)
> -{
> -	struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
> -
> -	mutex_lock(&tps65912->irq_lock);
> -}
> -
> -static void tps65912_irq_sync_unlock(struct irq_data *data)
> -{
> -	struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
> -	u32 reg_mask;
> -	u8 reg;
> -
> -	tps65912->read(tps65912, TPS65912_INT_MSK, 1, &reg);
> -	reg_mask = reg;
> -	tps65912->read(tps65912, TPS65912_INT_MSK2, 1, &reg);
> -	reg_mask |= reg << 8;
> -	tps65912->read(tps65912, TPS65912_INT_MSK3, 1, &reg);
> -	reg_mask |= reg << 16;
> -	tps65912->read(tps65912, TPS65912_INT_MSK4, 1, &reg);
> -	reg_mask |= reg << 24;
> -
> -	if (tps65912->irq_mask != reg_mask) {
> -		reg = tps65912->irq_mask & 0xFF;
> -		tps65912->write(tps65912, TPS65912_INT_MSK, 1, &reg);
> -		reg = tps65912->irq_mask >> 8 & 0xFF;
> -		tps65912->write(tps65912, TPS65912_INT_MSK2, 1, &reg);
> -		reg = tps65912->irq_mask >> 16 & 0xFF;
> -		tps65912->write(tps65912, TPS65912_INT_MSK3, 1, &reg);
> -		reg = tps65912->irq_mask >> 24 & 0xFF;
> -		tps65912->write(tps65912, TPS65912_INT_MSK4, 1, &reg);
> -	}
> -
> -	mutex_unlock(&tps65912->irq_lock);
> -}
> -
> -static void tps65912_irq_enable(struct irq_data *data)
> -{
> -	struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
> -
> -	tps65912->irq_mask &= ~(1 << irq_to_tps65912_irq(tps65912, data->irq));
> -}
> -
> -static void tps65912_irq_disable(struct irq_data *data)
> -{
> -	struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
> -
> -	tps65912->irq_mask |= (1 << irq_to_tps65912_irq(tps65912, data->irq));
> -}
> -
> -static struct irq_chip tps65912_irq_chip = {
> -	.name = "tps65912",
> -	.irq_bus_lock = tps65912_irq_lock,
> -	.irq_bus_sync_unlock = tps65912_irq_sync_unlock,
> -	.irq_disable = tps65912_irq_disable,
> -	.irq_enable = tps65912_irq_enable,
> -};
> -
> -int tps65912_irq_init(struct tps65912 *tps65912, int irq,
> -			    struct tps65912_platform_data *pdata)
> -{
> -	int ret, cur_irq;
> -	int flags = IRQF_ONESHOT;
> -	u8 reg;
> -
> -	if (!irq) {
> -		dev_warn(tps65912->dev, "No interrupt support, no core IRQ\n");
> -		return 0;
> -	}
> -
> -	if (!pdata || !pdata->irq_base) {
> -		dev_warn(tps65912->dev, "No interrupt support, no IRQ base\n");
> -		return 0;
> -	}
> -
> -	/* Clear unattended interrupts */
> -	tps65912->read(tps65912, TPS65912_INT_STS, 1, &reg);
> -	tps65912->write(tps65912, TPS65912_INT_STS, 1, &reg);
> -	tps65912->read(tps65912, TPS65912_INT_STS2, 1, &reg);
> -	tps65912->write(tps65912, TPS65912_INT_STS2, 1, &reg);
> -	tps65912->read(tps65912, TPS65912_INT_STS3, 1, &reg);
> -	tps65912->write(tps65912, TPS65912_INT_STS3, 1, &reg);
> -	tps65912->read(tps65912, TPS65912_INT_STS4, 1, &reg);
> -	tps65912->write(tps65912, TPS65912_INT_STS4, 1, &reg);
> -
> -	/* Mask top level interrupts */
> -	tps65912->irq_mask = 0xFFFFFFFF;
> -
> -	mutex_init(&tps65912->irq_lock);
> -	tps65912->chip_irq = irq;
> -	tps65912->irq_base = pdata->irq_base;
> -
> -	tps65912->irq_num = TPS65912_NUM_IRQ;
> -
> -	/* Register with genirq */
> -	for (cur_irq = tps65912->irq_base;
> -	     cur_irq < tps65912->irq_num + tps65912->irq_base;
> -	     cur_irq++) {
> -		irq_set_chip_data(cur_irq, tps65912);
> -		irq_set_chip_and_handler(cur_irq, &tps65912_irq_chip,
> -					 handle_edge_irq);
> -		irq_set_nested_thread(cur_irq, 1);
> -		irq_clear_status_flags(cur_irq, IRQ_NOREQUEST | IRQ_NOPROBE);
> -	}
> -
> -	ret = request_threaded_irq(irq, NULL, tps65912_irq, flags,
> -				   "tps65912", tps65912);
> -
> -	irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW);
> -	if (ret != 0)
> -		dev_err(tps65912->dev, "Failed to request IRQ: %d\n", ret);
> -
> -	return ret;
> -}
> -
> -int tps65912_irq_exit(struct tps65912 *tps65912)
> -{
> -	free_irq(tps65912->chip_irq, tps65912);
> -	return 0;
> -}
> diff --git a/drivers/mfd/tps65912-spi.c b/drivers/mfd/tps65912-spi.c
> dissimilarity index 91%
> index de60ad9..d6ab929 100644
> --- a/drivers/mfd/tps65912-spi.c
> +++ b/drivers/mfd/tps65912-spi.c
> @@ -1,141 +1,95 @@
> -/*
> - * tps65912-spi.c  --  SPI access for TI TPS65912x PMIC
> - *
> - * Copyright 2011 Texas Instruments Inc.
> - *
> - * Author: Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> - *
> - *  This program is free software; you can redistribute it and/or modify it
> - *  under  the terms of the GNU General  Public License as published by the
> - *  Free Software Foundation;  either version 2 of the License, or (at your
> - *  option) any later version.
> - *
> - *  This driver is based on wm8350 implementation.
> - */
> -
> -#include <linux/module.h>
> -#include <linux/moduleparam.h>
> -#include <linux/init.h>
> -#include <linux/slab.h>
> -#include <linux/gpio.h>
> -#include <linux/spi/spi.h>
> -#include <linux/mfd/core.h>
> -#include <linux/mfd/tps65912.h>
> -
> -static int tps65912_spi_write(struct tps65912 *tps65912, u8 addr,
> -							int bytes, void *src)
> -{
> -	struct spi_device *spi = tps65912->control_data;
> -	u8 *data = (u8 *) src;
> -	int ret;
> -	/* bit 23 is the read/write bit */
> -	unsigned long spi_data = 1 << 23 | addr << 15 | *data;
> -	struct spi_transfer xfer;
> -	struct spi_message msg;
> -	u32 tx_buf;
> -
> -	tx_buf = spi_data;
> -
> -	xfer.tx_buf	= &tx_buf;
> -	xfer.rx_buf	= NULL;
> -	xfer.len	= sizeof(unsigned long);
> -	xfer.bits_per_word = 24;
> -
> -	spi_message_init(&msg);
> -	spi_message_add_tail(&xfer, &msg);
> -
> -	ret = spi_sync(spi, &msg);
> -	return ret;
> -}
> -
> -static int tps65912_spi_read(struct tps65912 *tps65912, u8 addr,
> -							int bytes, void *dest)
> -{
> -	struct spi_device *spi = tps65912->control_data;
> -	/* bit 23 is the read/write bit */
> -	unsigned long spi_data = 0 << 23 | addr << 15;
> -	struct spi_transfer xfer;
> -	struct spi_message msg;
> -	int ret;
> -	u8 *data = (u8 *) dest;
> -	u32 tx_buf, rx_buf;
> -
> -	tx_buf = spi_data;
> -	rx_buf = 0;
> -
> -	xfer.tx_buf	= &tx_buf;
> -	xfer.rx_buf	= &rx_buf;
> -	xfer.len	= sizeof(unsigned long);
> -	xfer.bits_per_word = 24;
> -
> -	spi_message_init(&msg);
> -	spi_message_add_tail(&xfer, &msg);
> -
> -	if (spi == NULL)
> -		return 0;
> -
> -	ret = spi_sync(spi, &msg);
> -	if (ret == 0)
> -		*data = (u8) (rx_buf & 0xFF);
> -	return ret;
> -}
> -
> -static int tps65912_spi_probe(struct spi_device *spi)
> -{
> -	struct tps65912 *tps65912;
> -
> -	tps65912 = devm_kzalloc(&spi->dev,
> -				sizeof(struct tps65912), GFP_KERNEL);
> -	if (tps65912 == NULL)
> -		return -ENOMEM;
> -
> -	tps65912->dev = &spi->dev;
> -	tps65912->control_data = spi;
> -	tps65912->read = tps65912_spi_read;
> -	tps65912->write = tps65912_spi_write;
> -
> -	spi_set_drvdata(spi, tps65912);
> -
> -	return tps65912_device_init(tps65912);
> -}
> -
> -static int tps65912_spi_remove(struct spi_device *spi)
> -{
> -	struct tps65912 *tps65912 = spi_get_drvdata(spi);
> -
> -	tps65912_device_exit(tps65912);
> -
> -	return 0;
> -}
> -
> -static struct spi_driver tps65912_spi_driver = {
> -	.driver = {
> -		.name = "tps65912",
> -		.owner = THIS_MODULE,
> -	},
> -	.probe	= tps65912_spi_probe,
> -	.remove = tps65912_spi_remove,
> -};
> -
> -static int __init tps65912_spi_init(void)
> -{
> -	int ret;
> -
> -	ret = spi_register_driver(&tps65912_spi_driver);
> -	if (ret != 0)
> -		pr_err("Failed to register TPS65912 SPI driver: %d\n", ret);
> -
> -	return 0;
> -}
> -/* init early so consumer devices can complete system boot */
> -subsys_initcall(tps65912_spi_init);
> -
> -static void __exit tps65912_spi_exit(void)
> -{
> -	spi_unregister_driver(&tps65912_spi_driver);
> -}
> -module_exit(tps65912_spi_exit);
> -
> -MODULE_AUTHOR("Margarita Olaya	<magi@xxxxxxxxxxxxxxx>");
> -MODULE_DESCRIPTION("SPI support for TPS65912 chip family mfd");
> -MODULE_LICENSE("GPL");
> +/*
> + * tps65912-spi.c -- SPI access driver for TI TPS65912x PMIC

All the same comments as the other files -- I'll not labour them.

Same goes for the rest of the file.

> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Andrew F. Davis <afd@xxxxxx>
> + *
> + * 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 TPS65218 driver and the previous TPS65912 driver by
> + * Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> + */
> +
> +#include <linux/spi/spi.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/regmap.h>

Alphabetical.

> +#include <linux/mfd/tps65912.h>
> +
> +static const struct of_device_id tps65912_spi_of_match_table[] = {
> +	{ .compatible = "ti,tps65912", },
> +	{ /*sentinel*/ }
> +};
> +
> +static int tps65912_spi_probe(struct spi_device *spi)
> +{
> +	struct tps65912 *tps;
> +	const struct of_device_id *match;
> +
> +	match = of_match_device(tps65912_spi_of_match_table, &spi->dev);
> +	if (!match) {
> +		dev_err(&spi->dev, "Failed to find matching DT id\n");
> +		return -EINVAL;
> +	}

Why are you matching?

> +	tps = devm_kzalloc(&spi->dev, sizeof(*tps), GFP_KERNEL);
> +	if (!tps)
> +		return -ENOMEM;
> +
> +	spi_set_drvdata(spi, tps);
> +	tps->dev = &spi->dev;
> +	tps->irq = spi->irq;
> +
> +	tps->regmap = devm_regmap_init_spi(spi, &tps65912_regmap_config);
> +	if (IS_ERR(tps->regmap)) {
> +		int ret = PTR_ERR(tps->regmap);
> +
> +		dev_err(tps->dev, "Failed to allocate register map: %d\n",
> +			ret);
> +
> +		return ret;
> +	}
> +
> +	return tps65912_device_init(tps);
> +}
> +
> +static int tps65912_spi_remove(struct spi_device *client)
> +{
> +	struct tps65912 *tps = spi_get_drvdata(client);
> +
> +	tps65912_device_exit(tps);
> +
> +	return 0;
> +}
> +
> +static const struct spi_device_id tps65912_spi_id_table[] = {
> +	{ "tps65912", TPS65912 },
> +	{ /*sentinel*/ },
> +};
> +MODULE_DEVICE_TABLE(spi, tps65912_spi_id_table);
> +
> +static struct spi_driver tps65912_spi_driver = {
> +	.driver		= {
> +		.name	= "tps65912",
> +		.owner	= THIS_MODULE,

Remove this line.

> +		.of_match_table = tps65912_spi_of_match_table,
> +	},
> +	.probe		= tps65912_spi_probe,
> +	.remove		= tps65912_spi_remove,
> +	.id_table       = tps65912_spi_id_table,
> +};
> +
> +module_spi_driver(tps65912_spi_driver);
> +
> +MODULE_AUTHOR("Andrew F. Davis <afd@xxxxxx>");
> +MODULE_DESCRIPTION("TPS65912x SPI Interface Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/regulator/tps65912-regulator.c b/drivers/regulator/tps65912-regulator.c
> dissimilarity index 94%
> index 9503d54..3d72f6f 100644
> --- a/drivers/regulator/tps65912-regulator.c
> +++ b/drivers/regulator/tps65912-regulator.c
> @@ -1,541 +1,242 @@
> -/*
> - * tps65912.c  --  TI tps65912
> - *
> - * Copyright 2011 Texas Instruments Inc.
> - *
> - * Author: Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> - *
> - *  This program is free software; you can redistribute it and/or modify it
> - *  under  the terms of the GNU General  Public License as published by the
> - *  Free Software Foundation;  either version 2 of the License, or (at your
> - *  option) any later version.
> - *
> - * This driver is based on wm8350 implementation.
> - */
> -
> -#include <linux/kernel.h>
> -#include <linux/module.h>
> -#include <linux/init.h>
> -#include <linux/err.h>
> -#include <linux/platform_device.h>
> -#include <linux/regulator/driver.h>
> -#include <linux/regulator/machine.h>
> -#include <linux/slab.h>
> -#include <linux/gpio.h>
> -#include <linux/mfd/tps65912.h>
> -
> -/* DCDC's */
> -#define TPS65912_REG_DCDC1	0
> -#define TPS65912_REG_DCDC2	1
> -#define TPS65912_REG_DCDC3	2
> -#define TPS65912_REG_DCDC4	3
> -
> -/* LDOs */
> -#define TPS65912_REG_LDO1	4
> -#define TPS65912_REG_LDO2	5
> -#define TPS65912_REG_LDO3	6
> -#define TPS65912_REG_LDO4	7
> -#define TPS65912_REG_LDO5	8
> -#define TPS65912_REG_LDO6	9
> -#define TPS65912_REG_LDO7	10
> -#define TPS65912_REG_LDO8	11
> -#define TPS65912_REG_LDO9	12
> -#define TPS65912_REG_LDO10	13
> -
> -/* Number of step-down converters available */
> -#define TPS65912_NUM_DCDC	4
> -
> -/* Number of LDO voltage regulators  available */
> -#define TPS65912_NUM_LDO	10
> -
> -/* Number of total regulators available */
> -#define TPS65912_NUM_REGULATOR		(TPS65912_NUM_DCDC + TPS65912_NUM_LDO)
> -
> -#define TPS65912_REG_ENABLED	0x80
> -#define OP_SELREG_MASK		0x40
> -#define OP_SELREG_SHIFT		6
> -
> -struct tps_info {
> -	const char *name;
> -};
> -
> -static struct tps_info tps65912_regs[] = {
> -	{
> -		.name = "DCDC1",
> -	},
> -	{
> -		.name = "DCDC2",
> -	},
> -	{
> -		.name = "DCDC3",
> -	},
> -	{
> -		.name = "DCDC4",
> -	},
> -	{
> -		.name = "LDO1",
> -	},
> -	{
> -		.name = "LDO2",
> -	},
> -	{
> -		.name = "LDO3",
> -	},
> -	{
> -		.name = "LDO4",
> -	},
> -	{
> -		.name = "LDO5",
> -	},
> -	{
> -		.name = "LDO6",
> -	},
> -	{
> -		.name = "LDO7",
> -	},
> -	{
> -		.name = "LDO8",
> -	},
> -	{
> -		.name = "LDO9",
> -	},
> -	{
> -		.name = "LDO10",
> -	},
> -};
> -
> -struct tps65912_reg {
> -	struct regulator_desc desc[TPS65912_NUM_REGULATOR];
> -	struct tps65912 *mfd;
> -	struct regulator_dev *rdev[TPS65912_NUM_REGULATOR];
> -	struct tps_info *info[TPS65912_NUM_REGULATOR];
> -	/* for read/write access */
> -	struct mutex io_lock;
> -	int mode;
> -	int (*get_ctrl_reg)(int);
> -	int dcdc_range[TPS65912_NUM_DCDC];
> -	int pwm_mode_reg;
> -	int eco_reg;
> -};
> -
> -static const struct regulator_linear_range tps65912_ldo_ranges[] = {
> -	REGULATOR_LINEAR_RANGE(800000, 0, 32, 25000),
> -	REGULATOR_LINEAR_RANGE(1650000, 33, 60, 50000),
> -	REGULATOR_LINEAR_RANGE(3100000, 61, 63, 100000),
> -};
> -
> -static int tps65912_get_range(struct tps65912_reg *pmic, int id)
> -{
> -	struct tps65912 *mfd = pmic->mfd;
> -	int range;
> -
> -	switch (id) {
> -	case TPS65912_REG_DCDC1:
> -		range = tps65912_reg_read(mfd, TPS65912_DCDC1_LIMIT);
> -		break;
> -	case TPS65912_REG_DCDC2:
> -		range = tps65912_reg_read(mfd, TPS65912_DCDC2_LIMIT);
> -		break;
> -	case TPS65912_REG_DCDC3:
> -		range = tps65912_reg_read(mfd, TPS65912_DCDC3_LIMIT);
> -		break;
> -	case TPS65912_REG_DCDC4:
> -		range = tps65912_reg_read(mfd, TPS65912_DCDC4_LIMIT);
> -		break;
> -	default:
> -		return 0;
> -	}
> -
> -	if (range >= 0)
> -		range = (range & DCDC_LIMIT_RANGE_MASK)
> -			>> DCDC_LIMIT_RANGE_SHIFT;
> -
> -	pmic->dcdc_range[id] = range;
> -	return range;
> -}
> -
> -static unsigned long tps65912_vsel_to_uv_range0(u8 vsel)
> -{
> -	unsigned long uv;
> -
> -	uv = ((vsel * 12500) + 500000);
> -	return uv;
> -}
> -
> -static unsigned long tps65912_vsel_to_uv_range1(u8 vsel)
> -{
> -	unsigned long uv;
> -
> -	 uv = ((vsel * 12500) + 700000);
> -	return uv;
> -}
> -
> -static unsigned long tps65912_vsel_to_uv_range2(u8 vsel)
> -{
> -	unsigned long uv;
> -
> -	uv = ((vsel * 25000) + 500000);
> -	return uv;
> -}
> -
> -static unsigned long tps65912_vsel_to_uv_range3(u8 vsel)
> -{
> -	unsigned long uv;
> -
> -	if (vsel == 0x3f)
> -		uv = 3800000;
> -	else
> -		uv = ((vsel * 50000) + 500000);
> -
> -	return uv;
> -}
> -
> -static int tps65912_get_ctrl_register(int id)
> -{
> -	if (id >= TPS65912_REG_DCDC1 && id <= TPS65912_REG_LDO4)
> -		return id * 3 + TPS65912_DCDC1_AVS;
> -	else if (id >= TPS65912_REG_LDO5 && id <= TPS65912_REG_LDO10)
> -		return id - TPS65912_REG_LDO5 + TPS65912_LDO5;
> -	else
> -		return -EINVAL;
> -}
> -
> -static int tps65912_get_sel_register(struct tps65912_reg *pmic, int id)
> -{
> -	struct tps65912 *mfd = pmic->mfd;
> -	int opvsel;
> -	u8 reg = 0;
> -
> -	if (id >= TPS65912_REG_DCDC1 && id <= TPS65912_REG_LDO4) {
> -		opvsel = tps65912_reg_read(mfd, id * 3 + TPS65912_DCDC1_OP);
> -		if (opvsel & OP_SELREG_MASK)
> -			reg = id * 3 + TPS65912_DCDC1_AVS;
> -		else
> -			reg = id * 3 + TPS65912_DCDC1_OP;
> -	} else if (id >= TPS65912_REG_LDO5 && id <= TPS65912_REG_LDO10) {
> -		reg = id - TPS65912_REG_LDO5 + TPS65912_LDO5;
> -	} else {
> -		return -EINVAL;
> -	}
> -
> -	return reg;
> -}
> -
> -static int tps65912_get_mode_regiters(struct tps65912_reg *pmic, int id)
> -{
> -	switch (id) {
> -	case TPS65912_REG_DCDC1:
> -		pmic->pwm_mode_reg = TPS65912_DCDC1_CTRL;
> -		pmic->eco_reg = TPS65912_DCDC1_AVS;
> -		break;
> -	case TPS65912_REG_DCDC2:
> -		pmic->pwm_mode_reg = TPS65912_DCDC2_CTRL;
> -		pmic->eco_reg = TPS65912_DCDC2_AVS;
> -		break;
> -	case TPS65912_REG_DCDC3:
> -		pmic->pwm_mode_reg = TPS65912_DCDC3_CTRL;
> -		pmic->eco_reg = TPS65912_DCDC3_AVS;
> -		break;
> -	case TPS65912_REG_DCDC4:
> -		pmic->pwm_mode_reg = TPS65912_DCDC4_CTRL;
> -		pmic->eco_reg = TPS65912_DCDC4_AVS;
> -		break;
> -	default:
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
> -static int tps65912_reg_is_enabled(struct regulator_dev *dev)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	struct tps65912 *mfd = pmic->mfd;
> -	int reg, value, id = rdev_get_id(dev);
> -
> -	if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10)
> -		return -EINVAL;
> -
> -	reg = pmic->get_ctrl_reg(id);
> -	if (reg < 0)
> -		return reg;
> -
> -	value = tps65912_reg_read(mfd, reg);
> -	if (value < 0)
> -		return value;
> -
> -	return value & TPS65912_REG_ENABLED;
> -}
> -
> -static int tps65912_reg_enable(struct regulator_dev *dev)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	struct tps65912 *mfd = pmic->mfd;
> -	int id = rdev_get_id(dev);
> -	int reg;
> -
> -	if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10)
> -		return -EINVAL;
> -
> -	reg = pmic->get_ctrl_reg(id);
> -	if (reg < 0)
> -		return reg;
> -
> -	return tps65912_set_bits(mfd, reg, TPS65912_REG_ENABLED);
> -}
> -
> -static int tps65912_reg_disable(struct regulator_dev *dev)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	struct tps65912 *mfd = pmic->mfd;
> -	int id = rdev_get_id(dev), reg;
> -
> -	reg = pmic->get_ctrl_reg(id);
> -	if (reg < 0)
> -		return reg;
> -
> -	return tps65912_clear_bits(mfd, reg, TPS65912_REG_ENABLED);
> -}
> -
> -static int tps65912_set_mode(struct regulator_dev *dev, unsigned int mode)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	struct tps65912 *mfd = pmic->mfd;
> -	int pwm_mode, eco, id = rdev_get_id(dev);
> -
> -	tps65912_get_mode_regiters(pmic, id);
> -
> -	pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg);
> -	eco = tps65912_reg_read(mfd, pmic->eco_reg);
> -
> -	pwm_mode &= DCDCCTRL_DCDC_MODE_MASK;
> -	eco &= DCDC_AVS_ECO_MASK;
> -
> -	switch (mode) {
> -	case REGULATOR_MODE_FAST:
> -		/* Verify if mode alredy set */
> -		if (pwm_mode && !eco)
> -			break;
> -		tps65912_set_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
> -		tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
> -		break;
> -	case REGULATOR_MODE_NORMAL:
> -	case REGULATOR_MODE_IDLE:
> -		if (!pwm_mode && !eco)
> -			break;
> -		tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
> -		tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
> -		break;
> -	case REGULATOR_MODE_STANDBY:
> -		if (!pwm_mode && eco)
> -			break;
> -		tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
> -		tps65912_set_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
> -		break;
> -	default:
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
> -static unsigned int tps65912_get_mode(struct regulator_dev *dev)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	struct tps65912 *mfd = pmic->mfd;
> -	int pwm_mode, eco, mode = 0, id = rdev_get_id(dev);
> -
> -	tps65912_get_mode_regiters(pmic, id);
> -
> -	pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg);
> -	eco = tps65912_reg_read(mfd, pmic->eco_reg);
> -
> -	pwm_mode &= DCDCCTRL_DCDC_MODE_MASK;
> -	eco &= DCDC_AVS_ECO_MASK;
> -
> -	if (pwm_mode && !eco)
> -		mode = REGULATOR_MODE_FAST;
> -	else if (!pwm_mode && !eco)
> -		mode = REGULATOR_MODE_NORMAL;
> -	else if (!pwm_mode && eco)
> -		mode = REGULATOR_MODE_STANDBY;
> -
> -	return mode;
> -}
> -
> -static int tps65912_list_voltage(struct regulator_dev *dev, unsigned selector)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	int range, voltage = 0, id = rdev_get_id(dev);
> -
> -	if (id > TPS65912_REG_DCDC4)
> -		return -EINVAL;
> -
> -	range = pmic->dcdc_range[id];
> -
> -	switch (range) {
> -	case 0:
> -		/* 0.5 - 1.2875V in 12.5mV steps */
> -		voltage = tps65912_vsel_to_uv_range0(selector);
> -		break;
> -	case 1:
> -		/* 0.7 - 1.4875V in 12.5mV steps */
> -		voltage = tps65912_vsel_to_uv_range1(selector);
> -		break;
> -	case 2:
> -		/* 0.5 - 2.075V in 25mV steps */
> -		voltage = tps65912_vsel_to_uv_range2(selector);
> -		break;
> -	case 3:
> -		/* 0.5 - 3.8V in 50mV steps */
> -		voltage = tps65912_vsel_to_uv_range3(selector);
> -		break;
> -	}
> -	return voltage;
> -}
> -
> -static int tps65912_get_voltage_sel(struct regulator_dev *dev)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	struct tps65912 *mfd = pmic->mfd;
> -	int id = rdev_get_id(dev);
> -	int reg, vsel;
> -
> -	reg = tps65912_get_sel_register(pmic, id);
> -	if (reg < 0)
> -		return reg;
> -
> -	vsel = tps65912_reg_read(mfd, reg);
> -	vsel &= 0x3F;
> -
> -	return vsel;
> -}
> -
> -static int tps65912_set_voltage_sel(struct regulator_dev *dev,
> -					 unsigned selector)
> -{
> -	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
> -	struct tps65912 *mfd = pmic->mfd;
> -	int id = rdev_get_id(dev);
> -	int value;
> -	u8 reg;
> -
> -	reg = tps65912_get_sel_register(pmic, id);
> -	value = tps65912_reg_read(mfd, reg);
> -	value &= 0xC0;
> -	return tps65912_reg_write(mfd, reg, selector | value);
> -}
> -
> -/* Operations permitted on DCDCx */
> -static struct regulator_ops tps65912_ops_dcdc = {
> -	.is_enabled = tps65912_reg_is_enabled,
> -	.enable = tps65912_reg_enable,
> -	.disable = tps65912_reg_disable,
> -	.set_mode = tps65912_set_mode,
> -	.get_mode = tps65912_get_mode,
> -	.get_voltage_sel = tps65912_get_voltage_sel,
> -	.set_voltage_sel = tps65912_set_voltage_sel,
> -	.list_voltage = tps65912_list_voltage,
> -};
> -
> -/* Operations permitted on LDOx */
> -static struct regulator_ops tps65912_ops_ldo = {
> -	.is_enabled = tps65912_reg_is_enabled,
> -	.enable = tps65912_reg_enable,
> -	.disable = tps65912_reg_disable,
> -	.get_voltage_sel = tps65912_get_voltage_sel,
> -	.set_voltage_sel = tps65912_set_voltage_sel,
> -	.list_voltage = regulator_list_voltage_linear_range,
> -	.map_voltage = regulator_map_voltage_linear_range,
> -};
> -
> -static int tps65912_probe(struct platform_device *pdev)
> -{
> -	struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent);
> -	struct regulator_config config = { };
> -	struct tps_info *info;
> -	struct regulator_init_data *reg_data;
> -	struct regulator_dev *rdev;
> -	struct tps65912_reg *pmic;
> -	struct tps65912_board *pmic_plat_data;
> -	int i;
> -
> -	pmic_plat_data = dev_get_platdata(tps65912->dev);
> -	if (!pmic_plat_data)
> -		return -EINVAL;
> -
> -	reg_data = pmic_plat_data->tps65912_pmic_init_data;
> -
> -	pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
> -	if (!pmic)
> -		return -ENOMEM;
> -
> -	mutex_init(&pmic->io_lock);
> -	pmic->mfd = tps65912;
> -	platform_set_drvdata(pdev, pmic);
> -
> -	pmic->get_ctrl_reg = &tps65912_get_ctrl_register;
> -	info = tps65912_regs;
> -
> -	for (i = 0; i < TPS65912_NUM_REGULATOR; i++, info++, reg_data++) {
> -		int range = 0;
> -		/* Register the regulators */
> -		pmic->info[i] = info;
> -
> -		pmic->desc[i].name = info->name;
> -		pmic->desc[i].id = i;
> -		pmic->desc[i].n_voltages = 64;
> -		if (i > TPS65912_REG_DCDC4) {
> -			pmic->desc[i].ops = &tps65912_ops_ldo;
> -			pmic->desc[i].linear_ranges = tps65912_ldo_ranges;
> -			pmic->desc[i].n_linear_ranges =
> -					ARRAY_SIZE(tps65912_ldo_ranges);
> -		} else {
> -			pmic->desc[i].ops = &tps65912_ops_dcdc;
> -		}
> -		pmic->desc[i].type = REGULATOR_VOLTAGE;
> -		pmic->desc[i].owner = THIS_MODULE;
> -		range = tps65912_get_range(pmic, i);
> -
> -		config.dev = tps65912->dev;
> -		config.init_data = reg_data;
> -		config.driver_data = pmic;
> -
> -		rdev = devm_regulator_register(&pdev->dev, &pmic->desc[i],
> -					       &config);
> -		if (IS_ERR(rdev)) {
> -			dev_err(tps65912->dev,
> -				"failed to register %s regulator\n",
> -				pdev->name);
> -			return PTR_ERR(rdev);
> -		}
> -
> -		/* Save regulator for cleanup */
> -		pmic->rdev[i] = rdev;
> -	}
> -	return 0;
> -}
> -
> -static struct platform_driver tps65912_driver = {
> -	.driver = {
> -		.name = "tps65912-pmic",
> -	},
> -	.probe = tps65912_probe,
> -};
> -
> -static int __init tps65912_init(void)
> -{
> -	return platform_driver_register(&tps65912_driver);
> -}
> -subsys_initcall(tps65912_init);
> -
> -static void __exit tps65912_cleanup(void)
> -{
> -	platform_driver_unregister(&tps65912_driver);
> -}
> -module_exit(tps65912_cleanup);
> -
> -MODULE_AUTHOR("Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>");
> -MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
> -MODULE_LICENSE("GPL v2");
> -MODULE_ALIAS("platform:tps65912-pmic");
> +/*
> + * tps65912-regulator.c
> + *
> + * Regulator driver for TPS65912 PMIC
> + *
> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Andrew F. Davis <afd@xxxxxx>
> + *
> + * 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 TPS65218 driver and the previous TPS65912 driver by
> + * Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
> + */
> +
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/driver.h>
> +#include <linux/regulator/of_regulator.h>
> +
> +#include <linux/mfd/tps65912.h>
> +
> +enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
> +	LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
> +
> +#define TPS65912_REGULATOR(_name, _id, _ops, _vr, _er, _lr, _nlr)	\
> +	{								\
> +		.name			= _name,			\
> +		.id			= _id,				\
> +		.ops			= &_ops,			\
> +		.n_voltages		= 64,				\
> +		.type			= REGULATOR_VOLTAGE,		\
> +		.owner			= THIS_MODULE,			\
> +		.vsel_reg		= _vr,				\
> +		.vsel_mask		= 0x3f,				\
> +		.enable_reg		= _er,				\
> +		.enable_mask		= BIT(7),			\
> +		.volt_table		= NULL,				\
> +		.linear_ranges		= _lr,				\
> +		.n_linear_ranges	= _nlr,				\
> +	}								\
> +
> +#define TPS65912_INFO(_id, _nm, _min, _max)	\
> +	[_id] = {					\
> +		.id		= _id,			\
> +		.name		= _nm,			\
> +		.min_uV		= _min,			\
> +		.max_uV		= _max,			\
> +	}
> +
> +static const struct regulator_linear_range tps65912_dcdc_ranges[] = {
> +	REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
> +};
> +
> +static const struct regulator_linear_range tps65912_ldo_ranges[] = {
> +	REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
> +	REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
> +	REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
> +};
> +
> +static struct tps_info tps65912_pmic_regs[] = {
> +	TPS65912_INFO(DCDC1, "DCDC1", 500000, 3800000),
> +	TPS65912_INFO(DCDC2, "DCDC2", 500000, 3800000),
> +	TPS65912_INFO(DCDC3, "DCDC3", 500000, 3800000),
> +	TPS65912_INFO(DCDC4, "DCDC4", 500000, 3800000),
> +	TPS65912_INFO(LDO1, "LDO1", 800000, 3300000),
> +	TPS65912_INFO(LDO2, "LDO2", 800000, 3300000),
> +	TPS65912_INFO(LDO3, "LDO3", 800000, 3300000),
> +	TPS65912_INFO(LDO4, "LDO4", 1600000, 3300000),
> +	TPS65912_INFO(LDO5, "LDO5", 1600000, 3300000),
> +	TPS65912_INFO(LDO6, "LDO6", 800000, 3300000),
> +	TPS65912_INFO(LDO7, "LDO7", 800000, 3300000),
> +	TPS65912_INFO(LDO8, "LDO8", 800000, 3300000),
> +	TPS65912_INFO(LDO9, "LDO9", 800000, 3300000),
> +	TPS65912_INFO(LDO10, "LDO10", 800000, 3300000),
> +};
> +
> +#define TPS65912_OF_MATCH(comp, label) \
> +	{ \
> +		.compatible = comp, \
> +		.data = &label, \
> +	}
> +
> +static const struct of_device_id tps65912_regulator_of_match_table[] = {
> +	TPS65912_OF_MATCH("ti,tps65912-dcdc1", tps65912_pmic_regs[DCDC1]),
> +	TPS65912_OF_MATCH("ti,tps65912-dcdc2", tps65912_pmic_regs[DCDC2]),
> +	TPS65912_OF_MATCH("ti,tps65912-dcdc3", tps65912_pmic_regs[DCDC3]),
> +	TPS65912_OF_MATCH("ti,tps65912-dcdc4", tps65912_pmic_regs[DCDC4]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo1", tps65912_pmic_regs[LDO1]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo2", tps65912_pmic_regs[LDO2]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo3", tps65912_pmic_regs[LDO3]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo4", tps65912_pmic_regs[LDO4]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo5", tps65912_pmic_regs[LDO5]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo6", tps65912_pmic_regs[LDO6]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo7", tps65912_pmic_regs[LDO7]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo8", tps65912_pmic_regs[LDO8]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo9", tps65912_pmic_regs[LDO9]),
> +	TPS65912_OF_MATCH("ti,tps65912-ldo10", tps65912_pmic_regs[LDO10]),
> +	{ /*sentinel*/ },
> +};
> +MODULE_DEVICE_TABLE(of, tps65912_regulator_of_match_table);
> +
> +/* Operations permitted on DCDCx */
> +static struct regulator_ops tps65912_ops_dcdc = {
> +	.is_enabled		= regulator_is_enabled_regmap,
> +	.enable			= regulator_enable_regmap,
> +	.disable		= regulator_disable_regmap,
> +	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
> +	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
> +	.list_voltage		= regulator_list_voltage_linear_range,
> +};
> +
> +/* Operations permitted on LDOx */
> +static struct regulator_ops tps65912_ops_ldo = {
> +	.is_enabled		= regulator_is_enabled_regmap,
> +	.enable			= regulator_enable_regmap,
> +	.disable		= regulator_disable_regmap,
> +	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
> +	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
> +	.list_voltage		= regulator_list_voltage_linear_range,
> +	.map_voltage		= regulator_map_voltage_linear_range,
> +};
> +
> +static const struct regulator_desc regulators[] = {
> +	TPS65912_REGULATOR("DCDC1", TPS65912_DCDC_1, tps65912_ops_dcdc,
> +			   TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
> +			   tps65912_dcdc_ranges,
> +			   ARRAY_SIZE(tps65912_dcdc_ranges)),
> +	TPS65912_REGULATOR("DCDC2", TPS65912_DCDC_2, tps65912_ops_dcdc,
> +			   TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
> +			   tps65912_dcdc_ranges,
> +			   ARRAY_SIZE(tps65912_dcdc_ranges)),
> +	TPS65912_REGULATOR("DCDC3", TPS65912_DCDC_3, tps65912_ops_dcdc,
> +			   TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
> +			   tps65912_dcdc_ranges,
> +			   ARRAY_SIZE(tps65912_dcdc_ranges)),
> +	TPS65912_REGULATOR("DCDC4", TPS65912_DCDC_4, tps65912_ops_dcdc,
> +			   TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
> +			   tps65912_dcdc_ranges,
> +			   ARRAY_SIZE(tps65912_dcdc_ranges)),
> +	TPS65912_REGULATOR("LDO1", TPS65912_LDO_1, tps65912_ops_ldo,
> +			   TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO2", TPS65912_LDO_2, tps65912_ops_ldo,
> +			   TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO3", TPS65912_LDO_3, tps65912_ops_ldo,
> +			   TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO4", TPS65912_LDO_4, tps65912_ops_ldo,
> +			   TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO5", TPS65912_LDO_5, tps65912_ops_ldo,
> +			   TPS65912_LDO5, TPS65912_LDO5,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO6", TPS65912_LDO_6, tps65912_ops_ldo,
> +			   TPS65912_LDO6, TPS65912_LDO6,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO7", TPS65912_LDO_7, tps65912_ops_ldo,
> +			   TPS65912_LDO7, TPS65912_LDO7,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO8", TPS65912_LDO_8, tps65912_ops_ldo,
> +			   TPS65912_LDO8, TPS65912_LDO8,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO9", TPS65912_LDO_9, tps65912_ops_ldo,
> +			   TPS65912_LDO9, TPS65912_LDO9,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +	TPS65912_REGULATOR("LDO10", TPS65912_LDO_10, tps65912_ops_ldo,
> +			   TPS65912_LDO10, TPS65912_LDO10,
> +			   tps65912_ldo_ranges,
> +			   ARRAY_SIZE(tps65912_ldo_ranges)),
> +};
> +
> +static int tps65912_regulator_probe(struct platform_device *pdev)
> +{
> +	struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
> +	struct regulator_init_data *init_data;
> +	const struct tps_info *template;
> +	struct regulator_dev *rdev;
> +	const struct of_device_id *match;
> +	struct regulator_config config = { };
> +	int id;
> +
> +	match = of_match_device(tps65912_regulator_of_match_table, &pdev->dev);
> +	if (!match)
> +		return -ENODEV;
> +
> +	template = match->data;
> +	id = template->id;
> +	init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
> +					       &regulators[id]);
> +
> +	platform_set_drvdata(pdev, tps);
> +
> +	tps->info[id] = &tps65912_pmic_regs[id];
> +	config.dev = &pdev->dev;
> +	config.init_data = init_data;
> +	config.driver_data = tps;
> +	config.regmap = tps->regmap;
> +	config.of_node = pdev->dev.of_node;
> +
> +	rdev = devm_regulator_register(&pdev->dev, &regulators[id], &config);
> +	if (IS_ERR(rdev)) {
> +		dev_err(tps->dev, "failed to register %s regulator\n",
> +			pdev->name);
> +		return PTR_ERR(rdev);
> +	}
> +
> +	return 0;
> +}
> +
> +static struct platform_driver tps65912_regulator_driver = {
> +	.driver = {
> +		.name = "tps65912-pmic",
> +		.of_match_table = tps65912_regulator_of_match_table,
> +	},
> +	.probe = tps65912_regulator_probe,
> +};
> +
> +module_platform_driver(tps65912_regulator_driver);
> +
> +MODULE_AUTHOR("Andrew F. Davis <afd@xxxxxx>");
> +MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
> +MODULE_ALIAS("platform:tps65912-pmic");
> +MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/mfd/tps65912.h b/include/linux/mfd/tps65912.h
> index 6d30903..ab91c12 100644
> --- a/include/linux/mfd/tps65912.h
> +++ b/include/linux/mfd/tps65912.h
> @@ -1,28 +1,34 @@
>  /*
> - * tps65912.h  --  TI TPS6591x
> + * tps65912.h -- TI TPS65912x
>   *
> - * Copyright 2011 Texas Instruments Inc.
> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
>   *
> - * Author: Margarita Olaya <magi@xxxxxxxxxxxxxxx>
> + * Author: Andrew F. Davis <afd@xxxxxx>
>   *
> - *  This program is free software; you can redistribute it and/or modify it
> - *  under  the terms of the GNU General  Public License as published by the
> - *  Free Software Foundation;  either version 2 of the License, or (at your
> - *  option) any later version.
> + * 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 TPS65218 driver and the previous TPS65912 driver by
> + * Margarita Olaya Cabrera <magi@xxxxxxxxxxxxxxx>
>   */
>  
>  #ifndef __LINUX_MFD_TPS65912_H
>  #define __LINUX_MFD_TPS65912_H
>  
> -/* TPS regulator type list */
> -#define REGULATOR_LDO		0
> -#define REGULATOR_DCDC		1
> +#include <linux/device.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/driver.h>
>  
> -/*
> - * List of registers for TPS65912
> - */
> +/* TPS chip id list */
> +#define TPS65912			0x00
>  
> +/* List of registers for TPS65912 */
>  #define TPS65912_DCDC1_CTRL		0x00
>  #define TPS65912_DCDC2_CTRL		0x01
>  #define TPS65912_DCDC3_CTRL		0x02
> @@ -126,41 +132,45 @@
>  #define TPS65912_VERNUM			0x64
>  #define TPS6591X_MAX_REGISTER		0x64
>  
> -/* IRQ Definitions */
> -#define TPS65912_IRQ_PWRHOLD_F		0
> -#define TPS65912_IRQ_VMON		1
> -#define TPS65912_IRQ_PWRON		2
> -#define TPS65912_IRQ_PWRON_LP		3
> -#define TPS65912_IRQ_PWRHOLD_R		4
> -#define TPS65912_IRQ_HOTDIE		5
> -#define TPS65912_IRQ_GPIO1_R		6
> -#define TPS65912_IRQ_GPIO1_F		7
> -#define TPS65912_IRQ_GPIO2_R		8
> -#define TPS65912_IRQ_GPIO2_F		9
> -#define TPS65912_IRQ_GPIO3_R		10
> -#define TPS65912_IRQ_GPIO3_F		11
> -#define TPS65912_IRQ_GPIO4_R		12
> -#define TPS65912_IRQ_GPIO4_F		13
> -#define TPS65912_IRQ_GPIO5_R		14
> -#define TPS65912_IRQ_GPIO5_F		15
> -#define TPS65912_IRQ_PGOOD_DCDC1	16
> -#define TPS65912_IRQ_PGOOD_DCDC2	17
> -#define TPS65912_IRQ_PGOOD_DCDC3	18
> -#define TPS65912_IRQ_PGOOD_DCDC4	19
> -#define TPS65912_IRQ_PGOOD_LDO1		20
> -#define TPS65912_IRQ_PGOOD_LDO2		21
> -#define TPS65912_IRQ_PGOOD_LDO3		22
> -#define TPS65912_IRQ_PGOOD_LDO4		23
> -#define TPS65912_IRQ_PGOOD_LDO5		24
> -#define TPS65912_IRQ_PGOOD_LDO6		25
> -#define TPS65912_IRQ_PGOOD_LDO7		26
> -#define TPS65912_IRQ_PGOOD_LD08		27
> -#define TPS65912_IRQ_PGOOD_LDO9		28
> -#define TPS65912_IRQ_PGOOD_LDO10	29
> +/* INT_STS Register field definitions */
> +#define TPS65912_INT_STS_PWRHOLD_F	BIT(0)
> +#define TPS65912_INT_STS_VMON		BIT(1)
> +#define TPS65912_INT_STS_PWRON		BIT(2)
> +#define TPS65912_INT_STS_PWRON_LP	BIT(3)
> +#define TPS65912_INT_STS_PWRHOLD_R	BIT(4)
> +#define TPS65912_INT_STS_HOTDIE		BIT(5)
> +#define TPS65912_INT_STS_GPIO1_R	BIT(6)
> +#define TPS65912_INT_STS_GPIO1_F	BIT(7)
>  
> -#define TPS65912_NUM_IRQ		30
> +/* INT_STS Register field definitions */
> +#define TPS65912_INT_STS2_GPIO2_R	BIT(0)
> +#define TPS65912_INT_STS2_GPIO2_F	BIT(1)
> +#define TPS65912_INT_STS2_GPIO3_R	BIT(2)
> +#define TPS65912_INT_STS2_GPIO3_F	BIT(3)
> +#define TPS65912_INT_STS2_GPIO4_R	BIT(4)
> +#define TPS65912_INT_STS2_GPIO4_F	BIT(5)
> +#define TPS65912_INT_STS2_GPIO5_R	BIT(6)
> +#define TPS65912_INT_STS2_GPIO5_F	BIT(7)
>  
> -/* GPIO 1 and 2 Register Definitions */
> +/* INT_STS Register field definitions */
> +#define TPS65912_INT_STS3_PGOOD_DCDC1	BIT(0)
> +#define TPS65912_INT_STS3_PGOOD_DCDC2	BIT(1)
> +#define TPS65912_INT_STS3_PGOOD_DCDC3	BIT(2)
> +#define TPS65912_INT_STS3_PGOOD_DCDC4	BIT(3)
> +#define TPS65912_INT_STS3_PGOOD_LDO1	BIT(4)
> +#define TPS65912_INT_STS3_PGOOD_LDO2	BIT(5)
> +#define TPS65912_INT_STS3_PGOOD_LDO3	BIT(6)
> +#define TPS65912_INT_STS3_PGOOD_LDO4	BIT(7)
> +
> +/* INT_STS Register field definitions */
> +#define TPS65912_INT_STS4_PGOOD_LDO5	BIT(0)
> +#define TPS65912_INT_STS4_PGOOD_LDO6	BIT(1)
> +#define TPS65912_INT_STS4_PGOOD_LDO7	BIT(2)
> +#define TPS65912_INT_STS4_PGOOD_LDO8	BIT(3)
> +#define TPS65912_INT_STS4_PGOOD_LDO9	BIT(4)
> +#define TPS65912_INT_STS4_PGOOD_LDO10	BIT(5)
> +
> +/* GPIO 1 and 2 Register field definitions */
>  #define GPIO_SLEEP_MASK			0x80
>  #define GPIO_SLEEP_SHIFT		7
>  #define GPIO_DEB_MASK			0x10
> @@ -172,7 +182,7 @@
>  #define GPIO_SET_MASK			0x01
>  #define GPIO_SET_SHIFT			0
>  
> -/* GPIO 3 Register Definitions */
> +/* GPIO 3 Register field definitions */
>  #define GPIO3_SLEEP_MASK		0x80
>  #define GPIO3_SLEEP_SHIFT		7
>  #define GPIO3_SEL_MASK			0x40
> @@ -190,7 +200,7 @@
>  #define GPIO3_SET_MASK			0x01
>  #define GPIO3_SET_SHIFT			0
>  
> -/* GPIO 4 Register Definitions */
> +/* GPIO 4 Register field definitions */
>  #define GPIO4_SLEEP_MASK		0x80
>  #define GPIO4_SLEEP_SHIFT		7
>  #define GPIO4_SEL_MASK			0x40
> @@ -264,65 +274,123 @@
>  #define DCDC_LIMIT_MAX_SEL_MASK		0x3F
>  #define DCDC_LIMIT_MAX_SEL_SHIFT	0
>  
> -/**
> - * struct tps65912_board
> - * Board platform dat may be used to initialize regulators.
> - */
> -struct tps65912_board {
> -	int is_dcdc1_avs;
> -	int is_dcdc2_avs;
> -	int is_dcdc3_avs;
> -	int is_dcdc4_avs;
> -	int irq;
> -	int irq_base;
> -	int gpio_base;
> -	struct regulator_init_data *tps65912_pmic_init_data;
> +enum tps65912_regulator_id {
> +	/* DCDC's */
> +	TPS65912_DCDC_1,
> +	TPS65912_DCDC_2,
> +	TPS65912_DCDC_3,
> +	TPS65912_DCDC_4,
> +	/* LDOs */
> +	TPS65912_LDO_1,
> +	TPS65912_LDO_2,
> +	TPS65912_LDO_3,
> +	TPS65912_LDO_4,
> +	TPS65912_LDO_5,
> +	TPS65912_LDO_6,
> +	TPS65912_LDO_7,
> +	TPS65912_LDO_8,
> +	TPS65912_LDO_9,
> +	TPS65912_LDO_10,
> +};
> +
> +#define TPS65912_MAX_REG_ID		TPS65912_LDO_10
> +
> +/* Number of step-down converters available */
> +#define TPS65912_NUM_DCDC		4
> +/* Number of LDO voltage regulators available */
> +#define TPS65912_NUM_LDO		10
> +/* Number of total regulators available */
> +#define TPS65912_NUM_REGULATOR		(TPS65912_NUM_DCDC + TPS65912_NUM_LDO)
> +
> +/* Define the TPS65912 IRQ numbers */
> +enum tps65912_irqs {
> +	/* INT_STS registers */
> +	TPS65912_IRQ_PWRHOLD_F,
> +	TPS65912_IRQ_VMON,
> +	TPS65912_IRQ_PWRON,
> +	TPS65912_IRQ_PWRON_LP,
> +	TPS65912_IRQ_PWRHOLD_R,
> +	TPS65912_IRQ_HOTDIE,
> +	TPS65912_IRQ_GPIO1_R,
> +	TPS65912_IRQ_GPIO1_F,
> +	/* INT_STS2 registers */
> +	TPS65912_IRQ_GPIO2_R,
> +	TPS65912_IRQ_GPIO2_F,
> +	TPS65912_IRQ_GPIO3_R,
> +	TPS65912_IRQ_GPIO3_F,
> +	TPS65912_IRQ_GPIO4_R,
> +	TPS65912_IRQ_GPIO4_F,
> +	TPS65912_IRQ_GPIO5_R,
> +	TPS65912_IRQ_GPIO5_F,
> +	/* INT_STS3 registers */
> +	TPS65912_IRQ_PGOOD_DCDC1,
> +	TPS65912_IRQ_PGOOD_DCDC2,
> +	TPS65912_IRQ_PGOOD_DCDC3,
> +	TPS65912_IRQ_PGOOD_DCDC4,
> +	TPS65912_IRQ_PGOOD_LDO1,
> +	TPS65912_IRQ_PGOOD_LDO2,
> +	TPS65912_IRQ_PGOOD_LDO3,
> +	TPS65912_IRQ_PGOOD_LDO4,
> +	/* INT_STS4 registers */
> +	TPS65912_IRQ_PGOOD_LDO5,
> +	TPS65912_IRQ_PGOOD_LDO6,
> +	TPS65912_IRQ_PGOOD_LDO7,
> +	TPS65912_IRQ_PGOOD_LDO8,
> +	TPS65912_IRQ_PGOOD_LDO9,
> +	TPS65912_IRQ_PGOOD_LDO10,
>  };
>  
> -/**
> - * struct tps65912 - tps65912 sub-driver chip access routines
> +/*
> + * struct tps_info - packages regulator constraints
> + * @id: Id of the regulator
> + * @name: Voltage regulator name
> + * @min_uV: Minimum micro volts
> + * @max_uV: Minimum micro volts
> + *
> + * This data is used to check the regualtor voltage limits while setting.
>   */
> +struct tps_info {
> +	int id;
> +	const char *name;
> +	int min_uV;
> +	int max_uV;
> +};
>  
> +/*
> + * struct tps65912 - state holder for the tps65912 driver
> + *
> + * Device data may be used to access the TPS65912 chip
> + */
>  struct tps65912 {
>  	struct device *dev;
> -	/* for read/write acces */
> -	struct mutex io_mutex;
> -
> -	/* For device IO interfaces: I2C or SPI */
> -	void *control_data;
> +	unsigned int id;
>  
> -	int (*read)(struct tps65912 *tps65912, u8 reg, int size, void *dest);
> -	int (*write)(struct tps65912 *tps65912, u8 reg, int size, void *src);
> -
> -	/* Client devices */
> -	struct tps65912_pmic *pmic;
> +	/* IRQ Data */
> +	int irq;
> +	struct regmap_irq_chip_data *irq_data;
>  
> -	/* GPIO Handling */
> -	struct gpio_chip gpio;
> +	struct regulator_desc desc[TPS65912_NUM_REGULATOR];
> +	struct tps_info *info[TPS65912_NUM_REGULATOR];
> +	struct regmap *regmap;
> +};
>  
> -	/* IRQ Handling */
> -	struct mutex irq_lock;
> -	int chip_irq;
> -	int irq_base;
> -	int irq_num;
> -	u32 irq_mask;
> +static const struct regmap_range tps65912_yes_ranges[] = {
> +	regmap_reg_range(TPS65912_INT_STS, TPS65912_GPIO5),
>  };
>  
> -struct tps65912_platform_data {
> -	int irq;
> -	int irq_base;
> +static const struct regmap_access_table tps65912_volatile_table = {
> +	.yes_ranges = tps65912_yes_ranges,
> +	.n_yes_ranges = ARRAY_SIZE(tps65912_yes_ranges),
>  };
>  
> -unsigned int tps_chip(void);
> +static const struct regmap_config tps65912_regmap_config = {
> +	.reg_bits = 8,
> +	.val_bits = 8,
> +	.cache_type = REGCACHE_RBTREE,
> +	.volatile_table = &tps65912_volatile_table,
> +};
>  
> -int tps65912_set_bits(struct tps65912 *tps65912, u8 reg, u8 mask);
> -int tps65912_clear_bits(struct tps65912 *tps65912, u8 reg, u8 mask);
> -int tps65912_reg_read(struct tps65912 *tps65912, u8 reg);
> -int tps65912_reg_write(struct tps65912 *tps65912, u8 reg, u8 val);
> -int tps65912_device_init(struct tps65912 *tps65912);
> -void tps65912_device_exit(struct tps65912 *tps65912);
> -int tps65912_irq_init(struct tps65912 *tps65912, int irq,
> -			struct tps65912_platform_data *pdata);
> -int tps65912_irq_exit(struct tps65912 *tps65912);
> +int tps65912_device_init(struct tps65912 *tps);
> +void tps65912_device_exit(struct tps65912 *tps);
>  
>  #endif /*  __LINUX_MFD_TPS65912_H */

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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