259 lines
7.7 KiB
C
259 lines
7.7 KiB
C
/**
|
|
* @file
|
|
* @brief ADC Devicetree macro public API header file.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2020, Linaro Ltd.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#ifndef ZEPHYR_INCLUDE_DEVICETREE_ADC_H_
|
|
#define ZEPHYR_INCLUDE_DEVICETREE_ADC_H_
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @defgroup devicetree-adc Devicetree ADC API
|
|
* @ingroup devicetree
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Get a label property from the node referenced by an
|
|
* io-channels property at an index
|
|
*
|
|
* It's an error if the node referenced by the phandle in node_id's
|
|
* io-channels property at index "idx" has no label property.
|
|
*
|
|
* Example devicetree fragment:
|
|
*
|
|
* adc1: adc@... {
|
|
* label = "ADC_1";
|
|
* };
|
|
*
|
|
* adc2: adc@... {
|
|
* label = "ADC_2";
|
|
* };
|
|
*
|
|
* n: node {
|
|
* io-channels = <&adc1 10>, <&adc2 20>;
|
|
* };
|
|
*
|
|
* Example usage:
|
|
*
|
|
* DT_IO_CHANNELS_LABEL_BY_IDX(DT_NODELABEL(n), 1) // "ADC_2"
|
|
*
|
|
* @param node_id node identifier for a node with an io-channels property
|
|
* @param idx logical index into io-channels property
|
|
* @return the label property of the node referenced at index "idx"
|
|
* @see DT_PROP_BY_PHANDLE_IDX()
|
|
*/
|
|
#define DT_IO_CHANNELS_LABEL_BY_IDX(node_id, idx) \
|
|
DT_PROP_BY_PHANDLE_IDX(node_id, io_channels, idx, label)
|
|
|
|
/**
|
|
* @brief Get a label property from an io-channels property by name
|
|
*
|
|
* It's an error if the node referenced by the phandle in node_id's
|
|
* io-channels property at the element named "name" has no label
|
|
* property.
|
|
*
|
|
* Example devicetree fragment:
|
|
*
|
|
* adc1: adc@... {
|
|
* label = "ADC_1";
|
|
* };
|
|
*
|
|
* adc2: adc@... {
|
|
* label = "ADC_2";
|
|
* };
|
|
*
|
|
* n: node {
|
|
* io-channels = <&adc1 10>, <&adc2 20>;
|
|
* io-channel-names = "SENSOR", "BANDGAP";
|
|
* };
|
|
*
|
|
* Example usage:
|
|
*
|
|
* DT_IO_CHANNELS_LABEL_BY_NAME(DT_NODELABEL(n), bandgap) // "ADC_2"
|
|
*
|
|
* @param node_id node identifier for a node with an io-channels property
|
|
* @param name lowercase-and-underscores name of an io-channels element
|
|
* as defined by the node's io-channel-names property
|
|
* @return the label property of the node referenced at the named element
|
|
* @see DT_PHANDLE_BY_NAME()
|
|
*/
|
|
#define DT_IO_CHANNELS_LABEL_BY_NAME(node_id, name) \
|
|
DT_PROP(DT_PHANDLE_BY_NAME(node_id, io_channels, name), label)
|
|
|
|
/**
|
|
* @brief Equivalent to DT_IO_CHANNELS_LABEL_BY_IDX(node_id, 0)
|
|
* @param node_id node identifier for a node with an io-channels property
|
|
* @return the label property of the node referenced at index 0
|
|
* @see DT_IO_CHANNELS_LABEL_BY_IDX()
|
|
*/
|
|
#define DT_IO_CHANNELS_LABEL(node_id) DT_IO_CHANNELS_LABEL_BY_IDX(node_id, 0)
|
|
|
|
/**
|
|
* @brief Get a label property from a DT_DRV_COMPAT instance's io-channels
|
|
* property at an index
|
|
* @param inst DT_DRV_COMPAT instance number
|
|
* @param idx logical index into io-channels property
|
|
* @return the label property of the node referenced at index "idx"
|
|
* @see DT_IO_CHANNELS_LABEL_BY_IDX()
|
|
*/
|
|
#define DT_INST_IO_CHANNELS_LABEL_BY_IDX(inst, idx) \
|
|
DT_IO_CHANNELS_LABEL_BY_IDX(DT_DRV_INST(inst), idx)
|
|
|
|
/**
|
|
* @brief Get a label property from a DT_DRV_COMPAT instance's io-channels
|
|
* property by name
|
|
* @param inst DT_DRV_COMPAT instance number
|
|
* @param name lowercase-and-underscores name of an io-channels element
|
|
* as defined by the instance's io-channel-names property
|
|
* @return the label property of the node referenced at the named element
|
|
* @see DT_IO_CHANNELS_LABEL_BY_NAME()
|
|
*/
|
|
#define DT_INST_IO_CHANNELS_LABEL_BY_NAME(inst, name) \
|
|
DT_IO_CHANNELS_LABEL_BY_NAME(DT_DRV_INST(inst), name)
|
|
|
|
/**
|
|
* @brief Equivalent to DT_INST_IO_CHANNELS_LABEL_BY_IDX(inst, 0)
|
|
* @param inst DT_DRV_COMPAT instance number
|
|
* @return the label property of the node referenced at index 0
|
|
*/
|
|
#define DT_INST_IO_CHANNELS_LABEL(inst) DT_INST_IO_CHANNELS_LABEL_BY_IDX(inst, 0)
|
|
|
|
/**
|
|
* @brief Get an io-channels specifier input cell at an index
|
|
*
|
|
* This macro only works for io-channels specifiers with cells named
|
|
* "input". Refer to the node's binding to check if necessary.
|
|
*
|
|
* Example devicetree fragment:
|
|
*
|
|
* adc1: adc@... {
|
|
* compatible = "vnd,adc";
|
|
* #io-channel-cells = <1>;
|
|
* };
|
|
*
|
|
* adc2: adc@... {
|
|
* compatible = "vnd,adc";
|
|
* #io-channel-cells = <1>;
|
|
* };
|
|
*
|
|
* n: node {
|
|
* io-channels = <&adc1 10>, <&adc2 20>;
|
|
* };
|
|
*
|
|
* Bindings fragment for the vnd,adc compatible:
|
|
*
|
|
* io-channel-cells:
|
|
* - input
|
|
*
|
|
* Example usage:
|
|
*
|
|
* DT_IO_CHANNELS_INPUT_BY_IDX(DT_NODELABEL(n), 0) // 10
|
|
* DT_IO_CHANNELS_INPUT_BY_IDX(DT_NODELABEL(n), 1) // 20
|
|
*
|
|
* @param node_id node identifier for a node with an io-channels property
|
|
* @param idx logical index into io-channels property
|
|
* @return the input cell in the specifier at index "idx"
|
|
* @see DT_PHA_BY_IDX()
|
|
*/
|
|
#define DT_IO_CHANNELS_INPUT_BY_IDX(node_id, idx) \
|
|
DT_PHA_BY_IDX(node_id, io_channels, idx, input)
|
|
|
|
/**
|
|
* @brief Get an io-channels specifier input cell by name
|
|
*
|
|
* This macro only works for io-channels specifiers with cells named
|
|
* "input". Refer to the node's binding to check if necessary.
|
|
*
|
|
* Example devicetree fragment:
|
|
*
|
|
* adc1: adc@... {
|
|
* compatible = "vnd,adc";
|
|
* #io-channel-cells = <1>;
|
|
* };
|
|
*
|
|
* adc2: adc@... {
|
|
* compatible = "vnd,adc";
|
|
* #io-channel-cells = <1>;
|
|
* };
|
|
*
|
|
* n: node {
|
|
* io-channels = <&adc1 10>, <&adc2 20>;
|
|
* io-channel-names = "SENSOR", "BANDGAP";
|
|
* };
|
|
*
|
|
* Bindings fragment for the vnd,adc compatible:
|
|
*
|
|
* io-channel-cells:
|
|
* - input
|
|
*
|
|
* Example usage:
|
|
*
|
|
* DT_IO_CHANNELS_INPUT_BY_NAME(DT_NODELABEL(n), sensor) // 10
|
|
* DT_IO_CHANNELS_INPUT_BY_NAME(DT_NODELABEL(n), bandgap) // 20
|
|
*
|
|
* @param node_id node identifier for a node with an io-channels property
|
|
* @param name lowercase-and-underscores name of an io-channels element
|
|
* as defined by the node's io-channel-names property
|
|
* @return the input cell in the specifier at the named element
|
|
* @see DT_PHA_BY_NAME()
|
|
*/
|
|
#define DT_IO_CHANNELS_INPUT_BY_NAME(node_id, name) \
|
|
DT_PHA_BY_NAME(node_id, io_channels, name, input)
|
|
/**
|
|
* @brief Equivalent to DT_IO_CHANNELS_INPUT_BY_IDX(node_id, 0)
|
|
* @param node_id node identifier for a node with an io-channels property
|
|
* @return the input cell in the specifier at index 0
|
|
* @see DT_IO_CHANNELS_INPUT_BY_IDX()
|
|
*/
|
|
#define DT_IO_CHANNELS_INPUT(node_id) DT_IO_CHANNELS_INPUT_BY_IDX(node_id, 0)
|
|
|
|
/**
|
|
* @brief Get an input cell from the "DT_DRV_INST(inst)" io-channels
|
|
* property at an index
|
|
* @param inst DT_DRV_COMPAT instance number
|
|
* @param idx logical index into io-channels property
|
|
* @return the input cell in the specifier at index "idx"
|
|
* @see DT_IO_CHANNELS_INPUT_BY_IDX()
|
|
*/
|
|
#define DT_INST_IO_CHANNELS_INPUT_BY_IDX(inst, idx) \
|
|
DT_IO_CHANNELS_INPUT_BY_IDX(DT_DRV_INST(inst), idx)
|
|
|
|
/**
|
|
* @brief Get an input cell from the "DT_DRV_INST(inst)" io-channels
|
|
* property by name
|
|
* @param inst DT_DRV_COMPAT instance number
|
|
* @param name lowercase-and-underscores name of an io-channels element
|
|
* as defined by the instance's io-channel-names property
|
|
* @return the input cell in the specifier at the named element
|
|
* @see DT_IO_CHANNELS_INPUT_BY_NAME()
|
|
*/
|
|
#define DT_INST_IO_CHANNELS_INPUT_BY_NAME(inst, name) \
|
|
DT_IO_CHANNELS_INPUT_BY_NAME(DT_DRV_INST(inst), name)
|
|
|
|
/**
|
|
* @brief Equivalent to DT_INST_IO_CHANNELS_INPUT_BY_IDX(inst, 0)
|
|
* @param inst DT_DRV_COMPAT instance number
|
|
* @return the input cell in the specifier at index 0
|
|
*/
|
|
#define DT_INST_IO_CHANNELS_INPUT(inst) DT_INST_IO_CHANNELS_INPUT_BY_IDX(inst, 0)
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ZEPHYR_INCLUDE_DEVICETREE_ADC_H_ */
|