[RFC PATCH] staging: ak8975: add platform data.

[Andrew Chew]

> As some of the platform not support irq_to_gpio, we pass gpio port
> by platform data.

Looks good to me.

Signed-off-by: Andrew Chew <achew at nvidia.com>

> Signed-off-by: Tony SIM <chinyeow.sim.xt at renesas.com>
> ---
>  drivers/staging/iio/magnetometer/ak8975.c |    8 +++++++-
>  include/linux/input/ak8975.h              |   20 ++++++++++++++++++++
>  2 files changed, 27 insertions(+), 1 deletions(-)
>  create mode 100644 include/linux/input/ak8975.h
> 
> diff --git a/drivers/staging/iio/magnetometer/ak8975.c 
> b/drivers/staging/iio/magnetometer/ak8975.c
> index 420f206..80c0f41 100644
> --- a/drivers/staging/iio/magnetometer/ak8975.c
> +++ b/drivers/staging/iio/magnetometer/ak8975.c
> @@ -29,6 +29,7 @@
>  #include <linux/delay.h>
>  
>  #include <linux/gpio.h>
> +#include <linux/input/ak8975.h>
>  
>  #include "../iio.h"
>  #include "magnet.h"
> @@ -435,6 +436,7 @@ static int ak8975_probe(struct i2c_client *client,
>  			const struct i2c_device_id *id)
>  {
>  	struct ak8975_data *data;
> +	struct ak8975_platform_data *pdata;
>  	int err;
>  
>  	/* Allocate our device context. */
> @@ -452,7 +454,11 @@ static int ak8975_probe(struct 
> i2c_client *client,
>  
>  	/* Grab and set up the supplied GPIO. */
>  	data->eoc_irq = client->irq;
> -	data->eoc_gpio = irq_to_gpio(client->irq);
> +	pdata = client->dev.platform_data;
> +	if (pdata)
> +		data->eoc_gpio = pdata->gpio;
> +	else
> +		data->eoc_gpio = irq_to_gpio(client->irq);
>  
>  	if (!data->eoc_gpio) {
>  		dev_err(&client->dev, "failed, no valid GPIO\n");
> diff --git a/include/linux/input/ak8975.h 
> b/include/linux/input/ak8975.h
> new file mode 100644
> index 0000000..25d41eb
> --- /dev/null
> +++ b/include/linux/input/ak8975.h
> @@ -0,0 +1,20 @@
> +/*
> + * ak8975 platform support
> + *
> + * Copyright (C) 2010 Renesas Solutions Corp.
> + *
> + * Author: Tony SIM <chinyeow.sim.xt at renesas.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.
> + */
> +
> +#ifndef _AK8975_H
> +#define _AK8975_H
> +
> +struct ak8975_platform_data {
> +	int gpio;
> +};
> +
> +#endif
> -- 
> 1.7.2.3
> 
> 
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