threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_GPIO_MACHINE_H
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#define __LINUX_GPIO_MACHINE_H
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#include <linux/types.h>
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#include <linux/list.h>
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enum gpio_lookup_flags {
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GPIO_ACTIVE_HIGH = (0 << 0),
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GPIO_ACTIVE_LOW = (1 << 0),
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GPIO_OPEN_DRAIN = (1 << 1),
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GPIO_OPEN_SOURCE = (1 << 2),
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GPIO_SLEEP_MAINTAIN_VALUE = (0 << 3),
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GPIO_SLEEP_MAY_LOOSE_VALUE = (1 << 3),
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};
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/**
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* struct gpiod_lookup - lookup table
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* @chip_label: name of the chip the GPIO belongs to
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* @chip_hwnum: hardware number (i.e. relative to the chip) of the GPIO
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* @con_id: name of the GPIO from the device's point of view
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* @idx: index of the GPIO in case several GPIOs share the same name
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* @flags: mask of GPIO_* values
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*
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* gpiod_lookup is a lookup table for associating GPIOs to specific devices and
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* functions using platform data.
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*/
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struct gpiod_lookup {
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const char *chip_label;
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u16 chip_hwnum;
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const char *con_id;
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unsigned int idx;
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enum gpio_lookup_flags flags;
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};
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struct gpiod_lookup_table {
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struct list_head list;
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const char *dev_id;
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struct gpiod_lookup table[];
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};
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/*
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* Simple definition of a single GPIO under a con_id
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*/
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#define GPIO_LOOKUP(_chip_label, _chip_hwnum, _con_id, _flags) \
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GPIO_LOOKUP_IDX(_chip_label, _chip_hwnum, _con_id, 0, _flags)
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/*
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* Use this macro if you need to have several GPIOs under the same con_id.
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* Each GPIO needs to use a different index and can be accessed using
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* gpiod_get_index()
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*/
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#define GPIO_LOOKUP_IDX(_chip_label, _chip_hwnum, _con_id, _idx, _flags) \
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{ \
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.chip_label = _chip_label, \
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.chip_hwnum = _chip_hwnum, \
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.con_id = _con_id, \
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.idx = _idx, \
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.flags = _flags, \
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}
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#ifdef CONFIG_GPIOLIB
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void gpiod_add_lookup_table(struct gpiod_lookup_table *table);
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void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n);
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void gpiod_remove_lookup_table(struct gpiod_lookup_table *table);
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#else
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static inline
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void gpiod_add_lookup_table(struct gpiod_lookup_table *table) {}
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static inline
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void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n) {}
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static inline
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void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) {}
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#endif
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#endif /* __LINUX_GPIO_MACHINE_H */
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