Re: [PATCH 2/3] iio: core: introduce IIO_CHAN_INFO_HARDWAREGAIN

[Jonathan Cameron <jic23@kernel.org>]

On 5/9/2012 11:36 AM, michael.hennerich@analog.com wrote:
> From: Michael Hennerich<michael.hennerich@analog.com>
>
> Signed-off-by: Michael Hennerich<michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
> ---
>   Documentation/ABI/testing/sysfs-bus-iio |    7 +++++++
>   drivers/iio/industrialio-core.c         |    1 +
>   include/linux/iio/iio.h                 |    5 +++++
>   3 files changed, 13 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index ccd8c84..cfedf63 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -282,6 +282,13 @@ Description:
>   		If a discrete set of scale values are available, they
>   		are listed in this attribute.
>
> +What		/sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
> +KernelVersion:	2.6.35
> +Contact:	linux-iio@vger.kernel.org
> +Description:
> +		Hardware applied gain factor. If shared across all channels,
> +		<type>_hardwaregain is used.
> +
>   What:		/sys/.../in_accel_filter_low_pass_3db_frequency
>   What:		/sys/.../in_magn_filter_low_pass_3db_frequency
>   What:		/sys/.../in_anglvel_filter_low_pass_3db_frequency
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index e799d35..874fb70 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -91,6 +91,7 @@ static const char * const iio_chan_info_postfix[] = {
>   	[IIO_CHAN_INFO_SAMP_FREQ] = "sampling_frequency",
>   	[IIO_CHAN_INFO_FREQUENCY] = "frequency",
>   	[IIO_CHAN_INFO_PHASE] = "phase",
> +	[IIO_CHAN_INFO_HARDWAREGAIN] = "hardwaregain",
>   };
>
>   const struct iio_chan_spec
> diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
> index 6fdbdb8..897c6b0 100644
> --- a/include/linux/iio/iio.h
> +++ b/include/linux/iio/iio.h
> @@ -34,6 +34,7 @@ enum iio_chan_info_enum {
>   	IIO_CHAN_INFO_SAMP_FREQ,
>   	IIO_CHAN_INFO_FREQUENCY,
>   	IIO_CHAN_INFO_PHASE,
> +	IIO_CHAN_INFO_HARDWAREGAIN,
>   };
>
>   #define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2)
> @@ -95,6 +96,10 @@ enum iio_chan_info_enum {
>   	IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PHASE)
>   #define IIO_CHAN_INFO_PHASE_SHARED_BIT			\
>   	IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_PHASE)
> +#define IIO_CHAN_INFO_HARDWAREGAIN_SEPARATE_BIT			\
> +	IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
> +#define IIO_CHAN_INFO_HARDWAREGAIN_SHARED_BIT			\
> +	IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
>
>   enum iio_endian {
>   	IIO_CPU,