> ---
> .../staging/iio/Documentation/sysfs-bus-iio-dds | 93 ++++++++++++++++++++
> 1 files changed, 93 insertions(+), 0 deletions(-)
> create mode 100644 drivers/staging/iio/Documentation/sysfs-bus-iio-dds
>
> diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio-dds b/drivers/staging/iio/Documentation/sysfs-bus-iio-dds
> new file mode 100644
> index 0000000..ffdd547
> --- /dev/null
> +++ b/drivers/staging/iio/Documentation/sysfs-bus-iio-dds
> @@ -0,0 +1,93 @@
> +
> +What: /sys/bus/iio/devices/.../ddsX_freqY
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Stores frequency into tuning word Y.
> + There will be more than one ddsX_freqY file, which allows for
> + pin controlled FSK Frequency Shift Keying
> + (ddsX_pincontrol_freq_en is active) or the user can control
> + the desired active tuning word by writing Y to the
> + ddsX_freqsymbol file.
> +
> +What: /sys/bus/iio/devices/.../ddsX_freqY_scale
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Scale to be applied to ddsX_freqY in order to obtain the
> + desired value in Hz. If shared across all frequency registers
> + Y is not present. It is also possible X is not present if
> + shared across all channels.
> +
> +What: /sys/bus/iio/devices/.../ddsX_freqsymbol
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Specifies the active output frequency tuning word. The value
> + corresponds to the Y in ddsX_freqY. To exit this mode the user
> + can write ddsX_pincontrol_freq_en or ddsX_out_enable file.
> +
> +What: /sys/bus/iio/devices/.../ddsX_phaseY
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Stores phase into Y.
> + There will be more than one ddsX_phaseY file, which allows for
> + pin controlled PSK Phase Shift Keying
> + (ddsX_pincontrol_phase_en is active) or the user can
> + control the desired phase Y which is added to the phase
> + accumulator output by writing Y to the en_phase file.
> +
> +What: /sys/bus/iio/devices/.../ddsX_phaseY_scale
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Scale to be applied to ddsX_phaseY in order to obtain the
> + desired value in rad. If shared across all phase registers
> + Y is not present. It is also possible X is not present if
> + shared across all channels.
> +
> +What: /sys/bus/iio/devices/.../ddsX_phasesymbol
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Specifies the active phase Y which is added to the phase
> + accumulator output. The value corresponds to the Y in
> + ddsX_phaseY. To exit this mode the user can write
> + ddsX_pincontrol_phase_en or disable file.
> +
> +What: /sys/bus/iio/devices/.../ddsX_pincontrol_en
> +What: /sys/bus/iio/devices/.../ddsX_pincontrol_freq_en
> +What: /sys/bus/iio/devices/.../ddsX_pincontrol_phase_en
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + ddsX_pincontrol_en: Both, the active frequency and phase is
> + controlled by the respective phase and frequency control inputs.
> + In case the device in question allows to independent controls,
> + then there are dedicated files (ddsX_pincontrol_freq_en,
> + ddsX_pincontrol_phase_en).
> +
> +What: /sys/bus/iio/devices/.../ddsX_out_enable
> +What: /sys/bus/iio/devices/.../ddsX_outY_enable
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + ddsX_outY_enable controls signal generation on output Y of
> + channel X. Y may be suppressed if all channels are
> + controlled together.
> +
> +What: /sys/bus/iio/devices/.../ddsX_outY_wavetype
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Specifies the output waveform.
> + (sine, triangle, ramp, square, ...)
> + For a list of available output waveform options read
> + available_output_modes.
> +
> +What: /sys/bus/iio/devices/.../ddsX_outY_wavetype_available
> +KernelVersion: 2.6.37
> +Contact:
linux-iio@vger.kernel.org
> +Description:
> + Lists all available output waveform options.
> --
> 1.6.0.2
>
>
