Date:	Thu, 30 Jun 2016 08:43:17 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Mark Brown <broonie@...nel.org>
Cc:	Stefan Agner <stefan@...er.ch>, Rob Herring <robh@...nel.org>,
	lgirdwood@...il.com, khilman@...libre.com, carlo@...one.org,
	b.galvani@...il.com, max.oss.09@...il.com, marcel@...wiler.com,
	linux@...linux.org.uk, galak@...eaurora.org,
	ijc+devicetree@...lion.org.uk, mark.rutland@....com,
	pawel.moll@....com, robh+dt@...nel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org
Subject: Re: Applied "mfd: rn5t618: Add Ricoh RN5T567 PMIC support" to the
 regulator tree

On Wed, 29 Jun 2016, Mark Brown wrote:

> The patch
> 
>    mfd: rn5t618: Add Ricoh RN5T567 PMIC support

Are all of these 'applied' emails because you merged my PR?

> has been applied to the regulator tree at
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 
> 
> All being well this means that it will be integrated into the linux-next
> tree (usually sometime in the next 24 hours) and sent to Linus during
> the next merge window (or sooner if it is a bug fix), however if
> problems are discovered then the patch may be dropped or reverted.  
> 
> You may get further e-mails resulting from automated or manual testing
> and review of the tree, please engage with people reporting problems and
> send followup patches addressing any issues that are reported if needed.
> 
> If any updates are required or you are submitting further changes they
> should be sent as incremental updates against current git, existing
> patches will not be replaced.
> 
> Please add any relevant lists and maintainers to the CCs when replying
> to this mail.
> 
> Thanks,
> Mark
> 
> From a99ab50dbbb1f982d076d19e0a9959fe2efa3126 Mon Sep 17 00:00:00 2001
> From: Stefan Agner <stefan@...er.ch>
> Date: Tue, 28 Jun 2016 22:53:19 -0700
> Subject: [PATCH] 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: Stefan Agner <stefan@...er.ch>
> Reviewed-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>
> Acked-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
> ---
>  Documentation/devicetree/bindings/mfd/rn5t618.txt | 19 +++++++++--------
>  drivers/mfd/Kconfig                               |  7 ++++---
>  drivers/mfd/rn5t618.c                             | 25 ++++++++++++++++-------
>  include/linux/mfd/rn5t618.h                       | 12 +++++++++++
>  4 files changed, 45 insertions(+), 18 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/rn5t618.txt b/Documentation/devicetree/bindings/mfd/rn5t618.txt
> index 937785a3eddc..9e6770b105c9 100644
> --- a/Documentation/devicetree/bindings/mfd/rn5t618.txt
> +++ b/Documentation/devicetree/bindings/mfd/rn5t618.txt
> @@ -1,18 +1,21 @@
> -* 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
>  
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 1bcf601de5bc..ff031a7735a5 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -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.
>  
> diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
> index 0ad51d792feb..c86160d3a773 100644
> --- a/drivers/mfd/rn5t618.c
> +++ b/drivers/mfd/rn5t618.c
> @@ -2,6 +2,7 @@
>   * MFD core driver for Ricoh RN5T618 PMIC
>   *
>   * Copyright (C) 2014 Beniamino Galvani <b.galvani@...il.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@...il.com>");
> -MODULE_DESCRIPTION("Ricoh RN5T618 MFD driver");
> +MODULE_DESCRIPTION("Ricoh RN5T567/618 MFD driver");
>  MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/mfd/rn5t618.h b/include/linux/mfd/rn5t618.h
> index c72d5344f3b3..54179c2577ae 100644
> --- a/include/linux/mfd/rn5t618.h
> +++ b/include/linux/mfd/rn5t618.h
> @@ -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 */

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