cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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gpiolib-acpi.h (2951B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * ACPI helpers for GPIO API
      4 *
      5 * Copyright (C) 2012,2019 Intel Corporation
      6 */
      7
      8#ifndef GPIOLIB_ACPI_H
      9#define GPIOLIB_ACPI_H
     10
     11struct acpi_device;
     12
     13/**
     14 * struct acpi_gpio_info - ACPI GPIO specific information
     15 * @adev: reference to ACPI device which consumes GPIO resource
     16 * @flags: GPIO initialization flags
     17 * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
     18 * @pin_config: pin bias as provided by ACPI
     19 * @polarity: interrupt polarity as provided by ACPI
     20 * @triggering: triggering type as provided by ACPI
     21 * @debounce: debounce timeout as provided by ACPI
     22 * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
     23 */
     24struct acpi_gpio_info {
     25	struct acpi_device *adev;
     26	enum gpiod_flags flags;
     27	bool gpioint;
     28	int pin_config;
     29	int polarity;
     30	int triggering;
     31	unsigned int debounce;
     32	unsigned int quirks;
     33};
     34
     35#ifdef CONFIG_ACPI
     36void acpi_gpiochip_add(struct gpio_chip *chip);
     37void acpi_gpiochip_remove(struct gpio_chip *chip);
     38
     39void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev);
     40
     41void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
     42void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
     43
     44int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
     45				 struct acpi_gpio_info *info);
     46int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
     47					struct acpi_gpio_info *info);
     48
     49struct gpio_desc *acpi_find_gpio(struct device *dev,
     50				 const char *con_id,
     51				 unsigned int idx,
     52				 enum gpiod_flags *dflags,
     53				 unsigned long *lookupflags);
     54struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
     55				      const char *propname, int index,
     56				      struct acpi_gpio_info *info);
     57
     58int acpi_gpio_count(struct device *dev, const char *con_id);
     59#else
     60static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
     61static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
     62
     63static inline void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) { }
     64
     65static inline void
     66acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
     67
     68static inline void
     69acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
     70
     71static inline int
     72acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info)
     73{
     74	return 0;
     75}
     76static inline int
     77acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
     78				    struct acpi_gpio_info *info)
     79{
     80	return 0;
     81}
     82
     83static inline struct gpio_desc *
     84acpi_find_gpio(struct device *dev, const char *con_id,
     85	       unsigned int idx, enum gpiod_flags *dflags,
     86	       unsigned long *lookupflags)
     87{
     88	return ERR_PTR(-ENOENT);
     89}
     90static inline struct gpio_desc *
     91acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
     92		    int index, struct acpi_gpio_info *info)
     93{
     94	return ERR_PTR(-ENXIO);
     95}
     96static inline int acpi_gpio_count(struct device *dev, const char *con_id)
     97{
     98	return -ENODEV;
     99}
    100#endif
    101
    102#endif /* GPIOLIB_ACPI_H */