blob: 1e896498c9db144134b90ba26c1e68b50669ed63 [file] [log] [blame]
/**
* @file
* @brief PWMs Devicetree macro public API header file.
*/
/*
* Copyright (c) 2020, Linaro Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_DEVICETREE_PWMS_H_
#define ZEPHYR_INCLUDE_DEVICETREE_PWMS_H_
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup devicetree-pwms Devicetree PWMs API
* @ingroup devicetree
* @{
*/
/**
* @brief Get the node identifier for the PWM controller from a
* pwms property at an index
*
* Example devicetree fragment:
*
* pwm1: pwm-controller@... { ... };
*
* pwm2: pwm-controller@... { ... };
*
* n: node {
* pwms = <&pwm1 1 PWM_POLARITY_NORMAL>,
* <&pwm2 3 PWM_POLARITY_INVERTED>;
* };
*
* Example usage:
*
* DT_PWMS_CTLR_BY_IDX(DT_NODELABEL(n), 0) // DT_NODELABEL(pwm1)
* DT_PWMS_CTLR_BY_IDX(DT_NODELABEL(n), 1) // DT_NODELABEL(pwm2)
*
* @param node_id node identifier for a node with a pwms property
* @param idx logical index into pwms property
* @return the node identifier for the PWM controller referenced at
* index "idx"
* @see DT_PROP_BY_PHANDLE_IDX()
*/
#define DT_PWMS_CTLR_BY_IDX(node_id, idx) \
DT_PHANDLE_BY_IDX(node_id, pwms, idx)
/**
* @brief Get the node identifier for the PWM controller from a
* pwms property by name
*
* Example devicetree fragment:
*
* pwm1: pwm-controller@... { ... };
*
* pwm2: pwm-controller@... { ... };
*
* n: node {
* pwms = <&pwm1 1 PWM_POLARITY_NORMAL>,
* <&pwm2 3 PWM_POLARITY_INVERTED>;
* pwm-names = "alpha", "beta";
* };
*
* Example usage:
*
* DT_PWMS_CTLR_BY_NAME(DT_NODELABEL(n), alpha) // DT_NODELABEL(pwm1)
* DT_PWMS_CTLR_BY_NAME(DT_NODELABEL(n), beta) // DT_NODELABEL(pwm2)
*
* @param node_id node identifier for a node with a pwms property
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the node identifier for the PWM controller in the named element
* @see DT_PHANDLE_BY_NAME()
*/
#define DT_PWMS_CTLR_BY_NAME(node_id, name) \
DT_PHANDLE_BY_NAME(node_id, pwms, name)
/**
* @brief Equivalent to DT_PWMS_CTLR_BY_IDX(node_id, 0)
* @param node_id node identifier for a node with a pwms property
* @return the node identifier for the PWM controller at index 0
* in the node's "pwms" property
* @see DT_PWMS_CTLR_BY_IDX()
*/
#define DT_PWMS_CTLR(node_id) DT_PWMS_CTLR_BY_IDX(node_id, 0)
/**
* @brief Get PWM specifier's cell value at an index
*
* Example devicetree fragment:
*
* pwm1: pwm-controller@... {
* compatible = "vnd,pwm";
* label = "PWM_1";
* #pwm-cells = <2>;
* };
*
* pwm2: pwm-controller@... {
* compatible = "vnd,pwm";
* label = "PWM_2";
* #pwm-cells = <2>;
* };
*
* n: node {
* pwms = <&pwm1 1 200000 PWM_POLARITY_NORMAL>,
* <&pwm2 3 100000 PWM_POLARITY_INVERTED>;
* };
*
* Bindings fragment for the "vnd,pwm" compatible:
*
* pwm-cells:
* - channel
* - period
* - flags
*
* Example usage:
*
* DT_PWMS_CELL_BY_IDX(DT_NODELABEL(n), 0, channel) // 1
* DT_PWMS_CELL_BY_IDX(DT_NODELABEL(n), 1, channel) // 3
* DT_PWMS_CELL_BY_IDX(DT_NODELABEL(n), 0, period) // 200000
* DT_PWMS_CELL_BY_IDX(DT_NODELABEL(n), 1, period) // 100000
* DT_PWMS_CELL_BY_IDX(DT_NODELABEL(n), 0, flags) // PWM_POLARITY_NORMAL
* DT_PWMS_CELL_BY_IDX(DT_NODELABEL(n), 1, flags) // PWM_POLARITY_INVERTED
*
* @param node_id node identifier for a node with a pwms property
* @param idx logical index into pwms property
* @param cell lowercase-and-underscores cell name
* @return the cell value at index "idx"
* @see DT_PHA_BY_IDX()
*/
#define DT_PWMS_CELL_BY_IDX(node_id, idx, cell) \
DT_PHA_BY_IDX(node_id, pwms, idx, cell)
/**
* @brief Get a PWM specifier's cell value by name
*
* Example devicetree fragment:
*
* pwm1: pwm-controller@... {
* compatible = "vnd,pwm";
* label = "PWM_1";
* #pwm-cells = <2>;
* };
*
* pwm2: pwm-controller@... {
* compatible = "vnd,pwm";
* label = "PWM_2";
* #pwm-cells = <2>;
* };
*
* n: node {
* pwms = <&pwm1 1 200000 PWM_POLARITY_NORMAL>,
* <&pwm2 3 100000 PWM_POLARITY_INVERTED>;
* pwm-names = "alpha", "beta";
* };
*
* Bindings fragment for the "vnd,pwm" compatible:
*
* pwm-cells:
* - channel
* - period
* - flags
*
* Example usage:
*
* DT_PWMS_CELL_BY_NAME(DT_NODELABEL(n), alpha, channel) // 1
* DT_PWMS_CELL_BY_NAME(DT_NODELABEL(n), beta, channel) // 3
* DT_PWMS_CELL_BY_NAME(DT_NODELABEL(n), alpha, period) // 200000
* DT_PWMS_CELL_BY_NAME(DT_NODELABEL(n), beta, period) // 100000
* DT_PWMS_CELL_BY_NAME(DT_NODELABEL(n), alpha, flags) // PWM_POLARITY_NORMAL
* DT_PWMS_CELL_BY_NAME(DT_NODELABEL(n), beta, flags) // PWM_POLARITY_INVERTED
*
* @param node_id node identifier for a node with a pwms property
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @param cell lowercase-and-underscores cell name
* @return the cell value in the specifier at the named element
* @see DT_PHA_BY_NAME()
*/
#define DT_PWMS_CELL_BY_NAME(node_id, name, cell) \
DT_PHA_BY_NAME(node_id, pwms, name, cell)
/**
* @brief Equivalent to DT_PWMS_CELL_BY_IDX(node_id, 0, cell)
* @param node_id node identifier for a node with a pwms property
* @param cell lowercase-and-underscores cell name
* @return the cell value at index 0
* @see DT_PWMS_CELL_BY_IDX()
*/
#define DT_PWMS_CELL(node_id, cell) DT_PWMS_CELL_BY_IDX(node_id, 0, cell)
/**
* @brief Get a PWM specifier's channel cell value at an index
*
* This macro only works for PWM specifiers with cells named "channel".
* Refer to the node's binding to check if necessary.
*
* This is equivalent to DT_PWMS_CELL_BY_IDX(node_id, idx, channel).
*
* @param node_id node identifier for a node with a pwms property
* @param idx logical index into pwms property
* @return the channel cell value at index "idx"
* @see DT_PWMS_CELL_BY_IDX()
*/
#define DT_PWMS_CHANNEL_BY_IDX(node_id, idx) \
DT_PWMS_CELL_BY_IDX(node_id, idx, channel)
/**
* @brief Get a PWM specifier's channel cell value by name
*
* This macro only works for PWM specifiers with cells named "channel".
* Refer to the node's binding to check if necessary.
*
* This is equivalent to DT_PWMS_CELL_BY_NAME(node_id, name, channel).
*
* @param node_id node identifier for a node with a pwms property
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the channel cell value in the specifier at the named element
* @see DT_PWMS_CELL_BY_NAME()
*/
#define DT_PWMS_CHANNEL_BY_NAME(node_id, name) \
DT_PWMS_CELL_BY_NAME(node_id, name, channel)
/**
* @brief Equivalent to DT_PWMS_CHANNEL_BY_IDX(node_id, 0)
* @param node_id node identifier for a node with a pwms property
* @return the channel cell value at index 0
* @see DT_PWMS_CHANNEL_BY_IDX()
*/
#define DT_PWMS_CHANNEL(node_id) DT_PWMS_CHANNEL_BY_IDX(node_id, 0)
/**
* @brief Get PWM specifier's period cell value at an index
*
* This macro only works for PWM specifiers with cells named "period".
* Refer to the node's binding to check if necessary.
*
* This is equivalent to DT_PWMS_CELL_BY_IDX(node_id, idx, period).
*
* @param node_id node identifier for a node with a pwms property
* @param idx logical index into pwms property
* @return the period cell value at index "idx"
* @see DT_PWMS_CELL_BY_IDX()
*/
#define DT_PWMS_PERIOD_BY_IDX(node_id, idx) \
DT_PWMS_CELL_BY_IDX(node_id, idx, period)
/**
* @brief Get a PWM specifier's period cell value by name
*
* This macro only works for PWM specifiers with cells named "period".
* Refer to the node's binding to check if necessary.
*
* This is equivalent to DT_PWMS_CELL_BY_NAME(node_id, name, period).
*
* @param node_id node identifier for a node with a pwms property
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the period cell value in the specifier at the named element
* @see DT_PWMS_CELL_BY_NAME()
*/
#define DT_PWMS_PERIOD_BY_NAME(node_id, name) \
DT_PWMS_CELL_BY_NAME(node_id, name, period)
/**
* @brief Equivalent to DT_PWMS_PERIOD_BY_IDX(node_id, 0)
* @param node_id node identifier for a node with a pwms property
* @return the period cell value at index 0
* @see DT_PWMS_PERIOD_BY_IDX()
*/
#define DT_PWMS_PERIOD(node_id) DT_PWMS_PERIOD_BY_IDX(node_id, 0)
/**
* @brief Get a PWM specifier's flags cell value at an index
*
* This macro expects PWM specifiers with cells named "flags".
* If there is no "flags" cell in the PWM specifier, zero is returned.
* Refer to the node's binding to check specifier cell names if necessary.
*
* This is equivalent to DT_PWMS_CELL_BY_IDX(node_id, idx, flags).
*
* @param node_id node identifier for a node with a pwms property
* @param idx logical index into pwms property
* @return the flags cell value at index "idx", or zero if there is none
* @see DT_PWMS_CELL_BY_IDX()
*/
#define DT_PWMS_FLAGS_BY_IDX(node_id, idx) \
DT_PHA_BY_IDX_OR(node_id, pwms, idx, flags, 0)
/**
* @brief Get a PWM specifier's flags cell value by name
*
* This macro expects PWM specifiers with cells named "flags".
* If there is no "flags" cell in the PWM specifier, zero is returned.
* Refer to the node's binding to check specifier cell names if necessary.
*
* This is equivalent to DT_PWMS_CELL_BY_NAME(node_id, name, flags) if
* there is a flags cell, but expands to zero if there is none.
*
* @param node_id node identifier for a node with a pwms property
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the flags cell value in the specifier at the named element,
* or zero if there is none
* @see DT_PWMS_CELL_BY_NAME()
*/
#define DT_PWMS_FLAGS_BY_NAME(node_id, name) \
DT_PHA_BY_NAME_OR(node_id, pwms, name, flags, 0)
/**
* @brief Equivalent to DT_PWMS_FLAGS_BY_IDX(node_id, 0)
* @param node_id node identifier for a node with a pwms property
* @return the flags cell value at index 0, or zero if there is none
* @see DT_PWMS_FLAGS_BY_IDX()
*/
#define DT_PWMS_FLAGS(node_id) DT_PWMS_FLAGS_BY_IDX(node_id, 0)
/**
* @brief Get the node identifier for the PWM controller from a
* DT_DRV_COMPAT instance's pwms property at an index
*
* @param inst DT_DRV_COMPAT instance number
* @param idx logical index into pwms property
* @return the node identifier for the PWM controller referenced at
* index "idx"
* @see DT_PWMS_CTLR_BY_IDX()
*/
#define DT_INST_PWMS_CTLR_BY_IDX(inst, idx) \
DT_PWMS_CTLR_BY_IDX(DT_DRV_INST(inst), idx)
/**
* @brief Get the node identifier for the PWM controller from a
* DT_DRV_COMPAT instance's pwms property by name
* @param inst DT_DRV_COMPAT instance number
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the node identifier for the PWM controller in the named element
* @see DT_PWMS_CTLR_BY_NAME()
*/
#define DT_INST_PWMS_CTLR_BY_NAME(inst, name) \
DT_PWMS_CTLR_BY_NAME(DT_DRV_INST(inst), name)
/**
* @brief Equivalent to DT_INST_PWMS_CTLR_BY_IDX(inst, 0)
* @param inst DT_DRV_COMPAT instance number
* @return the node identifier for the PWM controller at index 0
* in the instance's "pwms" property
* @see DT_PWMS_CTLR_BY_IDX()
*/
#define DT_INST_PWMS_CTLR(inst) DT_INST_PWMS_CTLR_BY_IDX(inst, 0)
/**
* @brief Get a DT_DRV_COMPAT instance's PWM specifier's cell value
* at an index
* @param inst DT_DRV_COMPAT instance number
* @param idx logical index into pwms property
* @param cell lowercase-and-underscores cell name
* @return the cell value at index "idx"
*/
#define DT_INST_PWMS_CELL_BY_IDX(inst, idx, cell) \
DT_PWMS_CELL_BY_IDX(DT_DRV_INST(inst), idx, cell)
/**
* @brief Get a DT_DRV_COMPAT instance's PWM specifier's cell value by name
* @param inst DT_DRV_COMPAT instance number
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @param cell lowercase-and-underscores cell name
* @return the cell value in the specifier at the named element
* @see DT_PWMS_CELL_BY_NAME()
*/
#define DT_INST_PWMS_CELL_BY_NAME(inst, name, cell) \
DT_PWMS_CELL_BY_NAME(DT_DRV_INST(inst), name, cell)
/**
* @brief Equivalent to DT_INST_PWMS_CELL_BY_IDX(inst, 0, cell)
* @param inst DT_DRV_COMPAT instance number
* @param cell lowercase-and-underscores cell name
* @return the cell value at index 0
*/
#define DT_INST_PWMS_CELL(inst, cell) \
DT_INST_PWMS_CELL_BY_IDX(inst, 0, cell)
/**
* @brief Equivalent to DT_INST_PWMS_CELL_BY_IDX(inst, idx, channel)
* @param inst DT_DRV_COMPAT instance number
* @param idx logical index into pwms property
* @return the channel cell value at index "idx"
* @see DT_INST_PWMS_CELL_BY_IDX()
*/
#define DT_INST_PWMS_CHANNEL_BY_IDX(inst, idx) \
DT_INST_PWMS_CELL_BY_IDX(inst, idx, channel)
/**
* @brief Equivalent to DT_INST_PWMS_CELL_BY_NAME(inst, name, channel)
* @param inst DT_DRV_COMPAT instance number
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the channel cell value in the specifier at the named element
* @see DT_INST_PWMS_CELL_BY_NAME()
*/
#define DT_INST_PWMS_CHANNEL_BY_NAME(inst, name) \
DT_INST_PWMS_CELL_BY_NAME(inst, name, channel)
/**
* @brief Equivalent to DT_INST_PWMS_CHANNEL_BY_IDX(inst, 0)
* @param inst DT_DRV_COMPAT instance number
* @return the channel cell value at index 0
* @see DT_INST_PWMS_CHANNEL_BY_IDX()
*/
#define DT_INST_PWMS_CHANNEL(inst) DT_INST_PWMS_CHANNEL_BY_IDX(inst, 0)
/**
* @brief Equivalent to DT_INST_PWMS_CELL_BY_IDX(inst, idx, period)
* @param inst DT_DRV_COMPAT instance number
* @param idx logical index into pwms property
* @return the period cell value at index "idx"
* @see DT_INST_PWMS_CELL_BY_IDX()
*/
#define DT_INST_PWMS_PERIOD_BY_IDX(inst, idx) \
DT_INST_PWMS_CELL_BY_IDX(inst, idx, period)
/**
* @brief Equivalent to DT_INST_PWMS_CELL_BY_NAME(inst, name, period)
* @param inst DT_DRV_COMPAT instance number
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the period cell value in the specifier at the named element
* @see DT_INST_PWMS_CELL_BY_NAME()
*/
#define DT_INST_PWMS_PERIOD_BY_NAME(inst, name) \
DT_INST_PWMS_CELL_BY_NAME(inst, name, period)
/**
* @brief Equivalent to DT_INST_PWMS_PERIOD_BY_IDX(inst, 0)
* @param inst DT_DRV_COMPAT instance number
* @return the period cell value at index 0
* @see DT_INST_PWMS_PERIOD_BY_IDX()
*/
#define DT_INST_PWMS_PERIOD(inst) DT_INST_PWMS_PERIOD_BY_IDX(inst, 0)
/**
* @brief Equivalent to DT_INST_PWMS_CELL_BY_IDX(inst, idx, flags)
* @param inst DT_DRV_COMPAT instance number
* @param idx logical index into pwms property
* @return the flags cell value at index "idx", or zero if there is none
* @see DT_INST_PWMS_CELL_BY_IDX()
*/
#define DT_INST_PWMS_FLAGS_BY_IDX(inst, idx) \
DT_INST_PWMS_CELL_BY_IDX(inst, idx, flags)
/**
* @brief Equivalent to DT_INST_PWMS_CELL_BY_NAME(inst, name, flags)
* @param inst DT_DRV_COMPAT instance number
* @param name lowercase-and-underscores name of a pwms element
* as defined by the node's pwm-names property
* @return the flags cell value in the specifier at the named element,
* or zero if there is none
* @see DT_INST_PWMS_CELL_BY_NAME()
*/
#define DT_INST_PWMS_FLAGS_BY_NAME(inst, name) \
DT_INST_PWMS_CELL_BY_NAME(inst, name, flags)
/**
* @brief Equivalent to DT_INST_PWMS_FLAGS_BY_IDX(inst, 0)
* @param inst DT_DRV_COMPAT instance number
* @return the flags cell value at index 0, or zero if there is none
* @see DT_INST_PWMS_FLAGS_BY_IDX()
*/
#define DT_INST_PWMS_FLAGS(inst) DT_INST_PWMS_FLAGS_BY_IDX(inst, 0)
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* ZEPHYR_INCLUDE_DEVICETREE_PWMS_H_ */