linux-kernel - Re: [PATCH v2] mfd: MAX6650/6651 support

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Date:	Mon, 10 Feb 2014 08:37:42 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Laszlo Papp <lpapp@....org>
Cc:	lee.jones@...aro.org, linus.walleij@...aro.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mfd: MAX6650/6651 support

Hi,

On Sat, 2014-02-08 at 11:33 +0000, Laszlo Papp wrote:
> MAX6650/MAX6651 chip is a multi-function device with I2C busses. The
> chip includes fan-speed regulators and monitors, GPIO, and alarm.
> 
> This patch is an initial release of a MAX6650/6651 MFD driver that
> supports to enable the chip with its primary I2C bus that will connect
> the hwmon, and then the gpio devices for now.
> 
> Signed-off-by: Laszlo Papp <lpapp@....org>
> ---
>  drivers/mfd/Kconfig                 | 11 +++++
>  drivers/mfd/Makefile                |  1 +
>  drivers/mfd/max665x.c               | 88 +++++++++++++++++++++++++++++++++++++
>  include/linux/mfd/max665x-private.h | 42 ++++++++++++++++++
>  4 files changed, 142 insertions(+)
>  create mode 100644 drivers/mfd/max665x.c
>  create mode 100644 include/linux/mfd/max665x-private.h
> 
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 49bb445..e25be62 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -368,6 +368,17 @@ config MFD_MAX8907
>  	  accessing the device; additional drivers must be enabled in order
>  	  to use the functionality of the device.
>  
> +config MFD_MAX665X
> +	bool "Maxim Semiconductor MAX6650/MAX6651 Support"
> +	select MFD_CORE
> +	depends on I2C
> +	select REGMAP_I2C
> +	help
> +	  Say yes here to support for Maxim Semiconductor MAX6650/MAX6651. This is
> +	  a fan speed regulator and monitor IC. This driver provies common support

s/provies/provides/

(...)


> +const struct regmap_config max665x_regmap_config = {
> +	.reg_bits = 5,
> +};
> +
> +static int max665x_probe(struct i2c_client *i2c,
> +			    const struct i2c_device_id *id)
> +{
> +	struct max665x_dev *max665x;
> +	int ret;
> +
> +	max665x = devm_kzalloc(&i2c->dev, sizeof(*max665x), GFP_KERNEL);
> +	if (!max665x)
> +		return -ENOMEM;
> +
> +	i2c_set_clientdata(i2c, max665x);
> +	max665x->dev = &i2c->dev;
> +	max665x->i2c = i2c;
> +	max665x->map = regmap_init_i2c(i2c, &max665x_regmap_config);

Use devm_regmap_init_i2c() (or add missing regmap_exit()).


Best regards,
Krzysztof


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