Re: [PATCH 1/7] iio:imu:adis: Add debugfs register access support

[Jonathan Cameron <jic23@kernel.org>]

On 11/20/2012 01:36 PM, Lars-Peter Clausen wrote:
> Provide a IIO debugfs register access function for the ADIS library. This
> function can be used by induvidual drivers to allow raw register access via
> debugfs.
> 
> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
added to togreg branch of iio.git
> ---
>  drivers/iio/imu/adis.c       | 23 +++++++++++++++++++++++
>  include/linux/iio/imu/adis.h | 11 +++++++++++
>  2 files changed, 34 insertions(+)
> 
> diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c
> index 8259b77..28d4df2 100644
> --- a/drivers/iio/imu/adis.c
> +++ b/drivers/iio/imu/adis.c
> @@ -135,6 +135,29 @@ error_ret:
>  }
>  EXPORT_SYMBOL_GPL(adis_read_reg_16);
>  
> +#ifdef CONFIG_DEBUG_FS
> +
> +int adis_debugfs_reg_access(struct iio_dev *indio_dev,
> +	unsigned int reg, unsigned int writeval, unsigned int *readval)
> +{
> +	struct adis *adis = iio_device_get_drvdata(indio_dev);
> +
> +	if (readval) {
> +		uint16_t val16;
> +		int ret;
> +
> +		ret = adis_read_reg_16(adis, reg, &val16);
> +		*readval = val16;
> +
> +		return ret;
> +	} else {
> +		return adis_write_reg_16(adis, reg, writeval);
> +	}
> +}
> +EXPORT_SYMBOL(adis_debugfs_reg_access);
> +
> +#endif
> +
>  /**
>   * adis_enable_irq() - Enable or disable data ready IRQ
>   * @adis: The adis device
> diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
> index 8c3304d..fce7bc3 100644
> --- a/include/linux/iio/imu/adis.h
> +++ b/include/linux/iio/imu/adis.h
> @@ -183,4 +183,15 @@ static inline void adis_remove_trigger(struct adis *adis)
>  
>  #endif /* CONFIG_IIO_BUFFER */
>  
> +#ifdef CONFIG_DEBUG_FS
> +
> +int adis_debugfs_reg_access(struct iio_dev *indio_dev,
> +	unsigned int reg, unsigned int writeval, unsigned int *readval);
> +
> +#else
> +
> +#define adis_debugfs_reg_access NULL
> +
> +#endif
> +
>  #endif
>