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

This is a follow up to the commit

  f626d6dfb7 ("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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20190730104337.21235-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2019-07-30 13:43:36 +03:00 committed by Linus Walleij
parent fce04b1ce8
commit 77cb907abe
7 changed files with 109 additions and 93 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
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

1
drivers/gpio/gpio-mb86s7x.c
View File

@ -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,

1
drivers/gpio/gpio-xgene-sb.c
View File

@ -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"

1
drivers/gpio/gpiolib-acpi.c
View File

@ -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

104
drivers/gpio/gpiolib-acpi.h Normal file
View File

@ -0,0 +1,104 @@
/* 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 */

1
drivers/gpio/gpiolib.c
View File

@ -30,6 +30,7 @@
#include "gpiolib.h"
#include "gpiolib-of.h"
#include "gpiolib-acpi.h"
#define CREATE_TRACE_POINTS
#include <trace/events/gpio.h>

93
drivers/gpio/gpiolib.h
View File

@ -16,8 +16,6 @@
#include <linux/module.h>
#include <linux/cdev.h>
struct acpi_device;
/**
* struct gpio_device - internal state container for GPIO devices
* @id: numerical ID number for the GPIO chip
@ -68,100 +66,9 @@ struct gpio_device {
#endif
};
/**
* 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;
};
/* gpio suffixes used for ACPI and device tree lookup */
static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" };
#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
struct gpio_array {
struct gpio_desc **desc;
unsigned int size;