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gpiolib: legacy: Consolidate devm_gpio_*() with other legacy APIs

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There is no reason to keep deprecated legacy API implementations
in the gpiolib-devres.c. Consolidate devm_gpio_*() with other legacy
APIs. While at it, clean up header inclusion block in gpiolib-devres.c.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240828151357.2677340-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Andy Shevchenko 2024-08-28 18:12:43 +03:00 committed by Bartosz Golaszewski
parent 94bd9ce160
commit d25f9ab17d
2 changed files with 94 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
drivers/gpio/gpiolib-devres.c
View File

@ -6,15 +6,19 @@
* Copyright (c) 2011 John Crispin <john@phrozen.org> * Copyright (c) 2011 John Crispin <john@phrozen.org>
*/ */
#include <linux/module.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/device.h> #include <linux/device.h>
#include <linux/err.h>
#include <linux/export.h>
#include <linux/gfp.h> #include <linux/gfp.h>
#include <linux/types.h>
#include <linux/gpio/consumer.h>
#include "gpiolib.h" #include "gpiolib.h"
struct fwnode_handle;
struct lock_class_key;
static void devm_gpiod_release(struct device *dev, void *res) static void devm_gpiod_release(struct device *dev, void *res)
{ {
struct gpio_desc **desc = res; struct gpio_desc **desc = res;
@ -354,76 +358,6 @@ void devm_gpiod_put_array(struct device *dev, struct gpio_descs *descs)
} }
EXPORT_SYMBOL_GPL(devm_gpiod_put_array); EXPORT_SYMBOL_GPL(devm_gpiod_put_array);
static void devm_gpio_release(struct device *dev, void *res)
{
unsigned *gpio = res;
gpio_free(*gpio);
}
/**
* devm_gpio_request - request a GPIO for a managed device
* @dev: device to request the GPIO for
* @gpio: GPIO to allocate
* @label: the name of the requested GPIO
*
* Except for the extra @dev argument, this function takes the
* same arguments and performs the same function as
* gpio_request(). GPIOs requested with this function will be
* automatically freed on driver detach.
*/
int devm_gpio_request(struct device *dev, unsigned gpio, const char *label)
{
unsigned *dr;
int rc;
dr = devres_alloc(devm_gpio_release, sizeof(unsigned), GFP_KERNEL);
if (!dr)
return -ENOMEM;
rc = gpio_request(gpio, label);
if (rc) {
devres_free(dr);
return rc;
}
*dr = gpio;
devres_add(dev, dr);
return 0;
}
EXPORT_SYMBOL_GPL(devm_gpio_request);
/**
* devm_gpio_request_one - request a single GPIO with initial setup
* @dev: device to request for
* @gpio: the GPIO number
* @flags: GPIO configuration as specified by GPIOF_*
* @label: a literal description string of this GPIO
*/
int devm_gpio_request_one(struct device *dev, unsigned gpio,
unsigned long flags, const char *label)
{
unsigned *dr;
int rc;
dr = devres_alloc(devm_gpio_release, sizeof(unsigned), GFP_KERNEL);
if (!dr)
return -ENOMEM;
rc = gpio_request_one(gpio, flags, label);
if (rc) {
devres_free(dr);
return rc;
}
*dr = gpio;
devres_add(dev, dr);
return 0;
}
EXPORT_SYMBOL_GPL(devm_gpio_request_one);
static void devm_gpio_chip_release(void *data) static void devm_gpio_chip_release(void *data)
{ {
struct gpio_chip *gc = data; struct gpio_chip *gc = data;

86
drivers/gpio/gpiolib-legacy.c
View File

@ -1,4 +1,10 @@
// SPDX-License-Identifier: GPL-2.0 // SPDX-License-Identifier: GPL-2.0
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/gfp.h>
#include <linux/gpio/consumer.h> #include <linux/gpio/consumer.h>
#include <linux/gpio/driver.h> #include <linux/gpio/driver.h>
@ -74,3 +80,83 @@ int gpio_request(unsigned gpio, const char *label)
return gpiod_request(desc, label); return gpiod_request(desc, label);
} }
EXPORT_SYMBOL_GPL(gpio_request); EXPORT_SYMBOL_GPL(gpio_request);
static void devm_gpio_release(struct device *dev, void *res)
{
unsigned *gpio = res;
gpio_free(*gpio);
}
/**
* devm_gpio_request - request a GPIO for a managed device
* @dev: device to request the GPIO for
* @gpio: GPIO to allocate
* @label: the name of the requested GPIO
*
* Except for the extra @dev argument, this function takes the
* same arguments and performs the same function as gpio_request().
* GPIOs requested with this function will be automatically freed
* on driver detach.
*
* **DEPRECATED** This function is deprecated and must not be used in new code.
*
* Returns:
* 0 on success, or negative errno on failure.
*/
int devm_gpio_request(struct device *dev, unsigned gpio, const char *label)
{
unsigned *dr;
int rc;
dr = devres_alloc(devm_gpio_release, sizeof(unsigned), GFP_KERNEL);
if (!dr)
return -ENOMEM;
rc = gpio_request(gpio, label);
if (rc) {
devres_free(dr);
return rc;
}
*dr = gpio;
devres_add(dev, dr);
return 0;
}
EXPORT_SYMBOL_GPL(devm_gpio_request);
/**
* devm_gpio_request_one - request a single GPIO with initial setup
* @dev: device to request for
* @gpio: the GPIO number
* @flags: GPIO configuration as specified by GPIOF_*
* @label: a literal description string of this GPIO
*
* **DEPRECATED** This function is deprecated and must not be used in new code.
*
* Returns:
* 0 on success, or negative errno on failure.
*/
int devm_gpio_request_one(struct device *dev, unsigned gpio,
unsigned long flags, const char *label)
{
unsigned *dr;
int rc;
dr = devres_alloc(devm_gpio_release, sizeof(unsigned), GFP_KERNEL);
if (!dr)
return -ENOMEM;
rc = gpio_request_one(gpio, flags, label);
if (rc) {
devres_free(dr);
return rc;
}
*dr = gpio;
devres_add(dev, dr);
return 0;
}
EXPORT_SYMBOL_GPL(devm_gpio_request_one);