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Commit 77cb907a authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Linus Walleij
Browse files

gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 



This is a follow up to the commit

  f626d6df ("gpio: of: Break out OF-only code")

which broke down OF parts of GPIO library. Here we do the similar to ACPI.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20190730104337.21235-2-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent fce04b1c

drivers/gpio/gpio-dwapb.c

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@@ -27,6 +27,7 @@ 
#include <linux/slab.h>



#include "gpiolib.h"

#include "gpiolib-acpi.h"



#define GPIO_SWPORTA_DR		0x00

#define GPIO_SWPORTA_DDR	0x04

drivers/gpio/gpio-mb86s7x.c

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@@ -21,6 +21,7 @@ 
#include <linux/slab.h>



#include "gpiolib.h"

#include "gpiolib-acpi.h"



/*

 * Only first 8bits of a register correspond to each pin,

drivers/gpio/gpio-xgene-sb.c

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@@ -16,6 +16,7 @@ 
#include <linux/acpi.h>



#include "gpiolib.h"

#include "gpiolib-acpi.h"



/* Common property names */

#define XGENE_NIRQ_PROPERTY		"apm,nr-irqs"

drivers/gpio/gpiolib-acpi.c

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@@ -18,6 +18,7 @@ 
#include <linux/pinctrl/pinctrl.h>



#include "gpiolib.h"

#include "gpiolib-acpi.h"



/**

 * struct acpi_gpio_event - ACPI GPIO event handler data

drivers/gpio/gpiolib-acpi.h

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/* SPDX-License-Identifier: GPL-2.0 */

/*

 * ACPI helpers for GPIO API

 *

 * Copyright (C) 2012,2019 Intel Corporation

 */



#ifndef GPIOLIB_ACPI_H

#define GPIOLIB_ACPI_H



struct acpi_device;



/**

 * struct acpi_gpio_info - ACPI GPIO specific information

 * @adev: reference to ACPI device which consumes GPIO resource

 * @flags: GPIO initialization flags

 * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo

 * @pin_config: pin bias as provided by ACPI

 * @polarity: interrupt polarity as provided by ACPI

 * @triggering: triggering type as provided by ACPI

 * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping

 */

struct acpi_gpio_info {

	struct acpi_device *adev;

	enum gpiod_flags flags;

	bool gpioint;

	int pin_config;

	int polarity;

	int triggering;

	unsigned int quirks;

};



#ifdef CONFIG_ACPI

void acpi_gpiochip_add(struct gpio_chip *chip);

void acpi_gpiochip_remove(struct gpio_chip *chip);



void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);

void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);



int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,

				 struct acpi_gpio_info *info);

int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,

					struct acpi_gpio_info *info);



struct gpio_desc *acpi_find_gpio(struct device *dev,

				 const char *con_id,

				 unsigned int idx,

				 enum gpiod_flags *dflags,

				 unsigned long *lookupflags);

struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,

				      const char *propname, int index,

				      struct acpi_gpio_info *info);



int acpi_gpio_count(struct device *dev, const char *con_id);



bool acpi_can_fallback_to_crs(struct acpi_device *adev, const char *con_id);

#else

static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }

static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }



static inline void

acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }



static inline void

acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }



static inline int

acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info)

{

	return 0;

}

static inline int

acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,

				    struct acpi_gpio_info *info)

{

	return 0;

}



static inline struct gpio_desc *

acpi_find_gpio(struct device *dev, const char *con_id,

	       unsigned int idx, enum gpiod_flags *dflags,

	       unsigned long *lookupflags)

{

	return ERR_PTR(-ENOENT);

}

static inline struct gpio_desc *

acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,

		    int index, struct acpi_gpio_info *info)

{

	return ERR_PTR(-ENXIO);

}

static inline int acpi_gpio_count(struct device *dev, const char *con_id)

{

	return -ENODEV;

}



static inline bool acpi_can_fallback_to_crs(struct acpi_device *adev,

					    const char *con_id)

{

	return false;

}

#endif



#endif /* GPIOLIB_ACPI_H */