On Tue, May 22, 2018 at 10:52:37AM +0300, Eugen Hristev wrote:
> Added defines for channel consumer device-tree binding
>
> Signed-off-by: Eugen Hristev <eugen.hristev@xxxxxxxxxxxxx>
> Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 9 +++++++++
> include/dt-bindings/iio/adc/at91-sama5d2_adc.h | 16 ++++++++++++++++
> 2 files changed, 25 insertions(+)
> create mode 100644 include/dt-bindings/iio/adc/at91-sama5d2_adc.h
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
> index 6469a4c..4a3c1d4 100644
> --- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
> +++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
> @@ -21,6 +21,14 @@ Optional properties:
> - dmas: Phandle to dma channel for the ADC.
> - dma-names: Must be "rx" when dmas property is being used.
> See ../../dma/dma.txt for details.
> + - #io-channel-cells: in case consumer drivers are attached, this must be 1.
> + See <Documentation/devicetree/bindings/iio/iio-bindings.txt> for details.
> +
> +Properties for consumer drivers:
> + - Consumer drivers can be connected to this producer device, as specified
> + in <Documentation/devicetree/bindings/iio/iio-bindings.txt>
> + - Channels exposed are specified in:
> + <dt-bindings/iio/adc/at91-sama5d2_adc.txt>
>
> Example:
>
> @@ -38,4 +46,5 @@ adc: adc@fc030000 {
> atmel,trigger-edge-type = <IRQ_TYPE_EDGE_BOTH>;
> dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>;
> dma-names = "rx";
> + #io-channel-cells = <1>;
> }
> diff --git a/include/dt-bindings/iio/adc/at91-sama5d2_adc.h b/include/dt-bindings/iio/adc/at91-sama5d2_adc.h
> new file mode 100644
> index 0000000..70f99db
> --- /dev/null
> +++ b/include/dt-bindings/iio/adc/at91-sama5d2_adc.h
> @@ -0,0 +1,16 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * This header provides constants for configuring the AT91 SAMA5D2 ADC
> + */
> +
> +#ifndef _DT_BINDINGS_IIO_ADC_AT91_SAMA5D2_ADC_H
> +#define _DT_BINDINGS_IIO_ADC_AT91_SAMA5D2_ADC_H
> +
> +/* X relative position channel index */
> +#define AT91_SAMA5D2_ADC_X_CHANNEL 24
> +/* Y relative position channel index */
> +#define AT91_SAMA5D2_ADC_Y_CHANNEL 25
> +/* pressure channel index */
> +#define AT91_SAMA5D2_ADC_P_CHANNEL 26
> +
> +#endif
> --
> 2.7.4
>
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