devicetree: add devicetree/pinctrl.h
This contains accessor macros for getting phandles out of pinctrl properties by name and index. As usual, the representation in C for a phandle is a node identifier. Add these new macros: - DT_PINCTRL_BY_IDX(node_id, pc_idx, idx): phandle at index idx in the pinctrl-<pc_idx> property - DT_PINCTRL_0(node_id, idx): pinctrl-0 convenience for the same - DT_PINCTRL_BY_NAME(node_id, name, idx): phandle at index idx in the pinctrl property named 'name' - DT_PINCTRL_NAME_TO_IDX(node_id, name): convert a pinctrl property name to its index number - DT_NUM_PINCTRLS_BY_IDX(node_id, pc_idx): number of phandles in pinctrl-<pc_idx> - DT_NUM_PINCTRLS_BY_NAME(node_id, name): number of phandles in a named pinctrl property - DT_NUM_PINCTRL_STATES(node_id): total number of pinctrl-<pc_idx> properties - DT_PINCTRL_HAS_IDX(node_id, pc_idx): does pinctrl-<pc_idx> exist? - DT_PINCTRL_HAS_NAME(node_id, name): does a named pinctrl property exist? - DT_PINCTRL_IDX_TO_NAME_TOKEN(node_id, pc_idx): convert a pinctrl index to its name as a token, similar to DT_STRING_TOKEN() - DT_PINCTRL_IDX_TO_NAME_UPPER_TOKEN(node_id, pc_idx): like DT_PINCTRL_IDX_TO_NAME_TOKEN, but with an uppercase result As well as DT_DRV_INST equivalents, which take inst wherever node_id appears above: - DT_INST_PINCTRL_BY_IDX() - DT_INST_PINCTRL_0() - DT_INST_PINCTRL_BY_NAME() - DT_INST_PINCTRL_NAME_TO_IDX() - DT_INST_NUM_PINCTRLS_BY_IDX() - DT_INST_NUM_PINCTRLS_BY_NAME() - DT_INST_NUM_PINCTRL_STATES() - DT_INST_PINCTRL_HAS_IDX() - DT_INST_PINCTRL_HAS_NAME() - DT_INST_PINCTRL_IDX_TO_NAME_TOKEN() - DT_INST_PINCTRL_IDX_TO_NAME_UPPER_TOKEN() Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
This commit is contained in:
Martí Bolívar
Anas Nashif
parent
d85118fde9
commit
f4115423fa
2 changed files with 456 additions and 0 deletions
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@ -2673,5 +2673,6 @@
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#include <devicetree/fixed-partitions.h>
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#include <devicetree/zephyr.h>
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#include <devicetree/ordinals.h>
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#include <devicetree/pinctrl.h>
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#endif /* DEVICETREE_H */
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455
include/devicetree/pinctrl.h
Normal file
455
include/devicetree/pinctrl.h
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@ -0,0 +1,455 @@
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/*
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* Copyright (c) 2021 Nordic Semiconductor ASA
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_DEVICETREE_PINCTRL_H_
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#define ZEPHYR_INCLUDE_DEVICETREE_PINCTRL_H_
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/**
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* @file
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* @brief Devicetree pin control helpers
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*/
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/**
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* @defgroup devicetree-pinctrl Pin control
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* @ingroup devicetree
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* @{
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*/
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/**
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* @brief Get a node identifier for a phandle in a pinctrl property by index
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*
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* Example devicetree fragment:
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*
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* n: node {
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* pinctrl-0 = <&foo &bar>;
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* pinctrl-1 = <&baz &blub>;
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* }
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*
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* Example usage:
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*
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* DT_PINCTRL_BY_IDX(DT_NODELABEL(n), 0, 1) // DT_NODELABEL(bar)
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* DT_PINCTRL_BY_IDX(DT_NODELABEL(n), 1, 0) // DT_NODELABEL(baz)
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*
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* @param node_id node with a pinctrl-'pc_idx' property
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* @param pc_idx index of the pinctrl property itself
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* @param idx index into the value of the pinctrl property
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* @return node identifier for the phandle at index 'idx' in 'pinctrl-'pc_idx''
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*/
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#define DT_PINCTRL_BY_IDX(node_id, pc_idx, idx) \
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DT_CAT6(node_id, _P_pinctrl_, pc_idx, _IDX_, idx, _PH)
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/**
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* @brief Get a node identifier from a pinctrl-0 property
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*
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* This is equivalent to:
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*
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* DT_PINCTRL_BY_IDX(node_id, 0, idx)
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*
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* It is provided for convenience since pinctrl-0 is commonly used.
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*
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* @param node_id node with a pinctrl-0 property
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* @param idx index into the pinctrl-0 property
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* @return node identifier for the phandle at index idx in the pinctrl-0
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* property of that node
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*/
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#define DT_PINCTRL_0(node_id, idx) DT_PINCTRL_BY_IDX(node_id, 0, idx)
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/**
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* @brief Get a node identifier for a phandle inside a pinctrl node by name
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*
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* Example devicetree fragment:
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*
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* n: node {
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* pinctrl-0 = <&foo &bar>;
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* pinctrl-1 = <&baz &blub>;
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* pinctrl-names = "default", "sleep";
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* };
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*
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* Example usage:
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*
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* DT_PINCTRL_BY_NAME(DT_NODELABEL(n), default, 1) // DT_NODELABEL(bar)
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* DT_PINCTRL_BY_NAME(DT_NODELABEL(n), sleep, 0) // DT_NODELABEL(baz)
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*
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* @param node_id node with a named pinctrl property
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* @param name lowercase-and-underscores pinctrl property name
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* @param idx index into the value of the named pinctrl property
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* @return node identifier for the phandle at that index in the pinctrl
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* property
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*/
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#define DT_PINCTRL_BY_NAME(node_id, name, idx) \
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DT_CAT6(node_id, _PINCTRL_NAME_, name, _IDX_, idx, _PH)
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/**
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* @brief Convert a pinctrl name to its corresponding index
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*
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* Example devicetree fragment:
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*
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* n: node {
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* pinctrl-0 = <&foo &bar>;
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* pinctrl-1 = <&baz &blub>;
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* pinctrl-names = "default", "sleep";
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* };
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*
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* Example usage:
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*
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* DT_PINCTRL_NAME_TO_IDX(DT_NODELABEL(n), default) // 0
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* DT_PINCTRL_NAME_TO_IDX(DT_NODELABEL(n), sleep) // 1
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*
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* @param node_id node identifier with a named pinctrl property
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* @param name lowercase-and-underscores name name of the pinctrl whose index to get
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* @return integer literal for the index of the pinctrl property with that name
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*/
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#define DT_PINCTRL_NAME_TO_IDX(node_id, name) \
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DT_CAT4(node_id, _PINCTRL_NAME_, name, _IDX)
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/**
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* @brief Convert a pinctrl property index to its name as a token
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*
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* This allows you to get a pinctrl property's name, and "remove the
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* quotes" from it.
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*
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* DT_PINCTRL_IDX_TO_NAME_TOKEN() can only be used if the node has a
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* pinctrl-'pc_idx' property and a pinctrl-names property element for
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* that index. It is an error to use it in other circumstances.
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*
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* Example devicetree fragment:
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*
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* n: node {
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* pinctrl-0 = <...>;
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* pinctrl-1 = <...>;
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* pinctrl-names = "default", "f.o.o2";
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* };
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*
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* Example usage:
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*
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* DT_PINCTRL_IDX_TO_NAME_TOKEN(DT_NODELABEL(n), 0) // default
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* DT_PINCTRL_IDX_TO_NAME_TOKEN(DT_NODELABEL(n), 1) // f_o_o2
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*
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* The same caveats and restrictions that apply to DT_STRING_TOKEN()'s
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* return value also apply here.
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*
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* @param node_id node identifier
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* @param pc_idx index of a pinctrl property in that node
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* @return name of the pinctrl property, as a token, without any quotes
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* and with non-alphanumeric characters converted to underscores
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*/
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#define DT_PINCTRL_IDX_TO_NAME_TOKEN(node_id, pc_idx) \
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DT_CAT4(node_id, _PINCTRL_IDX_, pc_idx, _TOKEN)
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/**
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* @brief Like DT_PINCTRL_IDX_TO_NAME_TOKEN(), but with an uppercased result
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*
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* This does the a similar conversion as
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* DT_PINCTRL_IDX_TO_NAME_TOKEN(node_id, pc_idx). The only difference
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* is that alphabetical characters in the result are uppercased.
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*
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* Example devicetree fragment:
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*
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* n: node {
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* pinctrl-0 = <...>;
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* pinctrl-1 = <...>;
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* pinctrl-names = "default", "f.o.o2";
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* };
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*
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* Example usage:
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*
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* DT_PINCTRL_IDX_TO_NAME_TOKEN(DT_NODELABEL(n), 0) // DEFAULT
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* DT_PINCTRL_IDX_TO_NAME_TOKEN(DT_NODELABEL(n), 1) // F_O_O2
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*
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* The same caveats and restrictions that apply to
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* DT_STRING_UPPER_TOKEN()'s return value also apply here.
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*/
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#define DT_PINCTRL_IDX_TO_NAME_UPPER_TOKEN(node_id, pc_idx) \
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DT_CAT4(node_id, _PINCTRL_IDX_, pc_idx, _UPPER_TOKEN)
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/**
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* @brief Get the number of phandles in a pinctrl property
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*
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* Example devicetree fragment:
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*
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* n1: node-1 {
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* pinctrl-0 = <&foo &bar>;
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* };
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*
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* n2: node-2 {
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* pinctrl-0 = <&baz>;
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* };
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*
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* Example usage:
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*
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* DT_NUM_PINCTRLS_BY_IDX(DT_NODELABEL(n1), 0) // 2
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* DT_NUM_PINCTRLS_BY_IDX(DT_NODELABEL(n2), 0) // 1
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*
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* @param node_id node identifier with a pinctrl property
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* @param pc_idx index of the pinctrl property itself
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* @return number of phandles in the property with that index
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*/
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#define DT_NUM_PINCTRLS_BY_IDX(node_id, pc_idx) \
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DT_CAT4(node_id, _P_pinctrl_, pc_idx, _LEN)
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/**
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* @brief Like DT_NUM_PINCTRLS_BY_IDX(), but by name instead
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*
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* Example devicetree fragment:
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*
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* n: node {
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* pinctrl-0 = <&foo &bar>;
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* pinctrl-1 = <&baz>
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* pinctrl-names = "default", "sleep";
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* };
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*
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* Example usage:
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*
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* DT_NUM_PINCTRLS_BY_NAME(DT_NODELABEL(n), default) // 2
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* DT_NUM_PINCTRLS_BY_NAME(DT_NODELABEL(n), sleep) // 1
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*
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* @param node_id node identifier with a pinctrl property
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* @param name lowercase-and-underscores name name of the pinctrl property
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* @return number of phandles in the property with that name
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*/
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#define DT_NUM_PINCTRLS_BY_NAME(node_id, name) \
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DT_NUM_PINCTRLS_BY_IDX(node_id, DT_PINCTRL_NAME_TO_IDX(node_id, name))
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/**
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* @brief Get the number of pinctrl properties in a node
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*
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* This expands to 0 if there are no pinctrl-i properties.
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* Otherwise, it expands to the number of such properties.
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*
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* Example devicetree fragment:
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*
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* n1: node-1 {
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* pinctrl-0 = <...>;
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* pinctrl-1 = <...>;
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* };
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*
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* n2: node-2 {
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* };
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*
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* Example usage:
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*
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* DT_NUM_PINCTRL_STATES(DT_NODELABEL(n1)) // 2
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* DT_NUM_PINCTRL_STATES(DT_NODELABEL(n2)) // 0
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*
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* @param node_id node identifier; may or may not have any pinctrl properties
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* @return number of pinctrl properties in the node
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*/
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#define DT_NUM_PINCTRL_STATES(node_id) DT_CAT(node_id, _PINCTRL_NUM)
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/**
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* @brief Test if a node has a pinctrl property with an index
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*
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* This expands to 1 if the pinctrl-'idx' property exists.
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* Otherwise, it expands to 0.
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*
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* Example devicetree fragment:
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*
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* n1: node-1 {
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* pinctrl-0 = <...>;
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* pinctrl-1 = <...>;
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* };
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*
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* n2: node-2 {
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* };
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*
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* Example usage:
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*
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* DT_PINCTRL_HAS_IDX(DT_NODELABEL(n1), 0) // 1
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* DT_PINCTRL_HAS_IDX(DT_NODELABEL(n1), 1) // 1
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* DT_PINCTRL_HAS_IDX(DT_NODELABEL(n1), 2) // 0
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* DT_PINCTRL_HAS_IDX(DT_NODELABEL(n2), 0) // 0
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*
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* @param node_id node identifier; may or may not have any pinctrl properties
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* @param pc_idx index of a pinctrl property whose existence to check
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* @return 1 if the property exists, 0 otherwise
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*/
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#define DT_PINCTRL_HAS_IDX(node_id, pc_idx) \
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IS_ENABLED(DT_CAT4(node_id, _PINCTRL_IDX_, pc_idx, _EXISTS))
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/**
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* @brief Test if a node has a pinctrl property with a name
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*
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* This expands to 1 if the named pinctrl property exists.
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* Otherwise, it expands to 0.
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*
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* Example devicetree fragment:
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*
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* n1: node-1 {
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* pinctrl-0 = <...>;
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* pinctrl-names = "default";
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* };
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*
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* n2: node-2 {
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* };
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*
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* Example usage:
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*
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* DT_PINCTRL_HAS_NAME(DT_NODELABEL(n1), default) // 1
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* DT_PINCTRL_HAS_NAME(DT_NODELABEL(n1), sleep) // 0
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* DT_PINCTRL_HAS_NAME(DT_NODELABEL(n2), default) // 0
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*
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* @param node_id node identifier; may or may not have any pinctrl properties
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* @param name lowercase-and-underscores pinctrl property name to check
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* @return 1 if the property exists, 0 otherwise
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*/
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#define DT_PINCTRL_HAS_NAME(node_id, name) \
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IS_ENABLED(DT_CAT4(node_id, _PINCTRL_NAME_, name, _EXISTS))
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/**
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* @brief Get a node identifier for a phandle in a pinctrl property by index
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* for a DT_DRV_COMPAT instance
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*
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* This is equivalent to DT_PINCTRL_BY_IDX(DT_DRV_INST(inst), pc_idx, idx).
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*
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* @param inst instance number
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* @param pc_idx index of the pinctrl property itself
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* @param idx index into the value of the pinctrl property
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* @return node identifier for the phandle at index 'idx' in 'pinctrl-'pc_idx''
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*/
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#define DT_INST_PINCTRL_BY_IDX(inst, pc_idx, idx) \
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DT_PINCTRL_BY_IDX(DT_DRV_INST(inst), pc_idx, idx)
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/**
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* @brief Get a node identifier from a pinctrl-0 property for a
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* DT_DRV_COMPAT instance
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*
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* This is equivalent to:
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*
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* DT_PINCTRL_BY_IDX(DT_DRV_INST(inst), 0, idx)
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*
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* It is provided for convenience since pinctrl-0 is commonly used.
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*
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* @param inst instance number
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* @param idx index into the pinctrl-0 property
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* @return node identifier for the phandle at index idx in the pinctrl-0
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* property of that instance
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*/
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#define DT_INST_PINCTRL_0(inst, idx) \
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DT_PINCTRL_BY_IDX(DT_DRV_INST(inst), 0, idx)
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/**
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* @brief Get a node identifier for a phandle inside a pinctrl node
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* for a DT_DRV_COMPAT instance
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*
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* This is equivalent to DT_PINCTRL_BY_NAME(DT_DRV_INST(inst), name, idx).
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*
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* @param inst instance number
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* @param name lowercase-and-underscores pinctrl property name
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* @param idx index into the value of the named pinctrl property
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* @return node identifier for the phandle at that index in the pinctrl
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* property
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*/
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#define DT_INST_PINCTRL_BY_NAME(inst, name, idx) \
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DT_PINCTRL_BY_NAME(DT_DRV_INST(inst), name, idx)
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/**
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* @brief Convert a pinctrl name to its corresponding index
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* for a DT_DRV_COMPAT instance
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*
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* This is equivalent to DT_PINCTRL_NAME_TO_IDX(DT_DRV_INST(inst),
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* name).
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*
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* @param inst instance number
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* @param name lowercase-and-underscores name of the pinctrl whose index to get
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* @return integer literal for the index of the pinctrl property with that name
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*/
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#define DT_INST_PINCTRL_NAME_TO_IDX(inst, name) \
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DT_PINCTRL_NAME_TO_IDX(DT_DRV_INST(inst), name)
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/**
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* @brief Convert a pinctrl index to its name as an uppercased token
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*
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* This is equivalent to
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* DT_PINCTRL_IDX_TO_NAME_TOKEN(DT_DRV_INST(inst), pc_idx).
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*
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* @param inst instance number
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* @param pc_idx index of the pinctrl property itself
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* @return name of the pin control property as a token
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*/
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#define DT_INST_PINCTRL_IDX_TO_NAME_TOKEN(inst, pc_idx) \
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DT_PINCTRL_IDX_TO_NAME_TOKEN(DT_DRV_INST(inst), pc_idx)
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/**
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* @brief Convert a pinctrl index to its name as an uppercased token
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*
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* This is equivalent to
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* DT_PINCTRL_IDX_TO_NAME_UPPER_TOKEN(DT_DRV_INST(inst), idx).
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*
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* @param inst instance number
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* @param pc_idx index of the pinctrl property itself
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* @return name of the pin control property as an uppercase token
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*/
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#define DT_INST_PINCTRL_IDX_TO_NAME_UPPER_TOKEN(inst, pc_idx) \
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DT_PINCTRL_IDX_TO_NAME_UPPER_TOKEN(DT_DRV_INST(inst), pc_idx)
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/**
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* @brief Get the number of phandles in a pinctrl property
|
||||
* for a DT_DRV_COMPAT instance
|
||||
*
|
||||
* This is equivalent to DT_NUM_PINCTRLS_BY_IDX(DT_DRV_INST(inst),
|
||||
* pc_idx).
|
||||
*
|
||||
* @param inst instance number
|
||||
* @param pc_idx index of the pinctrl property itself
|
||||
* @return number of phandles in the property with that index
|
||||
*/
|
||||
#define DT_INST_NUM_PINCTRLS_BY_IDX(inst, pc_idx) \
|
||||
DT_NUM_PINCTRLS_BY_IDX(DT_DRV_INST(inst), pc_idx)
|
||||
|
||||
/**
|
||||
* @brief Like DT_INST_NUM_PINCTRLS_BY_IDX(), but by name instead
|
||||
*
|
||||
* This is equivalent to DT_NUM_PINCTRLS_BY_NAME(DT_DRV_INST(inst),
|
||||
* name).
|
||||
*
|
||||
* @param inst instance number
|
||||
* @param name lowercase-and-underscores name of the pinctrl property
|
||||
* @return number of phandles in the property with that name
|
||||
*/
|
||||
#define DT_INST_NUM_PINCTRLS_BY_NAME(inst, name) \
|
||||
DT_NUM_PINCTRLS_BY_NAME(DT_DRV_INST(inst), name)
|
||||
|
||||
/**
|
||||
* @brief Get the number of pinctrl properties in a DT_DRV_COMPAT instance
|
||||
*
|
||||
* This is equivalent to DT_NUM_PINCTRL_STATES(DT_DRV_INST(inst)).
|
||||
*
|
||||
* @param inst instance number
|
||||
* @return number of pinctrl properties in the instance
|
||||
*/
|
||||
#define DT_INST_NUM_PINCTRL_STATES(inst) \
|
||||
DT_NUM_PINCTRL_STATES(DT_DRV_INST(inst))
|
||||
|
||||
/**
|
||||
* @brief Test if a DT_DRV_COMPAT instance has a pinctrl property
|
||||
* with an index
|
||||
*
|
||||
* This is equivalent to DT_PINCTRL_HAS_IDX(DT_DRV_INST(inst), pc_idx).
|
||||
*
|
||||
* @param inst instance number
|
||||
* @param pc_idx index of a pinctrl property whose existence to check
|
||||
* @return 1 if the property exists, 0 otherwise
|
||||
*/
|
||||
#define DT_INST_PINCTRL_HAS_IDX(inst, pc_idx) \
|
||||
DT_PINCTRL_HAS_IDX(DT_DRV_INST(inst), pc_idx)
|
||||
|
||||
/**
|
||||
* @brief Test if a DT_DRV_COMPAT instance has a pinctrl property with a name
|
||||
*
|
||||
* This is equivalent to DT_PINCTRL_HAS_NAME(DT_DRV_INST(inst), name).
|
||||
*
|
||||
* @param inst instance number
|
||||
* @param name lowercase-and-underscores pinctrl property name to check
|
||||
* @return 1 if the property exists, 0 otherwise
|
||||
*/
|
||||
#define DT_INST_PINCTRL_HAS_NAME(inst, name) \
|
||||
DT_PINCTRL_HAS_NAME(DT_DRV_INST(inst), name)
|
||||
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* ZEPHYR_INCLUDE_DEVICETREE_PINCTRL_H_ */
|
||||
Loading…
Add table
Add a link
Reference in a new issue