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gpiolib: unexport devprop_gpiochip_set_names() 

Now that devprop_gpiochip_set_names() is only used in a single place
inside drivers/gpio/gpiolib.c, there's no need anymore for it to be
exported or to even live in its own source file. Pull this function into
the core source file for gpiolib.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Bartosz Golaszewski 2020-09-09 10:54:26 +02:00
parent 7cba1a4d5e
commit 32fc5aa2df
4 changed files with 47 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpio/Makefile
View File

@ -6,7 +6,6 @@ ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG
obj-$(CONFIG_GPIOLIB) += gpiolib.o
obj-$(CONFIG_GPIOLIB) += gpiolib-devres.o
obj-$(CONFIG_GPIOLIB) += gpiolib-legacy.o
obj-$(CONFIG_GPIOLIB) += gpiolib-devprop.o
obj-$(CONFIG_GPIOLIB) += gpiolib-cdev.o
obj-$(CONFIG_OF_GPIO) += gpiolib-of.o
obj-$(CONFIG_GPIO_SYSFS) += gpiolib-sysfs.o

63
drivers/gpio/gpiolib-devprop.c
View File

@ -1,63 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Device property helpers for GPIO chips.
*
* Copyright (C) 2016, Intel Corporation
* Author: Mika Westerberg <mika.westerberg@linux.intel.com>
*/
#include <linux/property.h>
#include <linux/slab.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio/driver.h>
#include <linux/export.h>
#include "gpiolib.h"
/**
* devprop_gpiochip_set_names - Set GPIO line names using device properties
* @chip: GPIO chip whose lines should be named, if possible
*
* Looks for device property "gpio-line-names" and if it exists assigns
* GPIO line names for the chip. The memory allocated for the assigned
* names belong to the underlying software node and should not be released
* by the caller.
*/
int devprop_gpiochip_set_names(struct gpio_chip *chip)
{
struct gpio_device *gdev = chip->gpiodev;
struct device *dev = chip->parent;
const char **names;
int ret, i;
int count;
count = device_property_string_array_count(dev, "gpio-line-names");
if (count < 0)
return 0;
if (count > gdev->ngpio) {
dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d",
count, gdev->ngpio);
count = gdev->ngpio;
}
names = kcalloc(count, sizeof(*names), GFP_KERNEL);
if (!names)
return -ENOMEM;
ret = device_property_read_string_array(dev, "gpio-line-names",
names, count);
if (ret < 0) {
dev_warn(&gdev->dev, "failed to read GPIO line names\n");
kfree(names);
return ret;
}
for (i = 0; i < count; i++)
gdev->descs[i].name = names[i];
kfree(names);
return 0;
}
EXPORT_SYMBOL_GPL(devprop_gpiochip_set_names);

47
drivers/gpio/gpiolib.c
View File

@ -358,6 +358,53 @@ static int gpiochip_set_desc_names(struct gpio_chip *gc)
return 0;
}
/*
* devprop_gpiochip_set_names - Set GPIO line names using device properties
* @chip: GPIO chip whose lines should be named, if possible
*
* Looks for device property "gpio-line-names" and if it exists assigns
* GPIO line names for the chip. The memory allocated for the assigned
* names belong to the underlying software node and should not be released
* by the caller.
*/
static int devprop_gpiochip_set_names(struct gpio_chip *chip)
{
struct gpio_device *gdev = chip->gpiodev;
struct device *dev = chip->parent;
const char **names;
int ret, i;
int count;
count = device_property_string_array_count(dev, "gpio-line-names");
if (count < 0)
return 0;
if (count > gdev->ngpio) {
dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d",
count, gdev->ngpio);
count = gdev->ngpio;
}
names = kcalloc(count, sizeof(*names), GFP_KERNEL);
if (!names)
return -ENOMEM;
ret = device_property_read_string_array(dev, "gpio-line-names",
names, count);
if (ret < 0) {
dev_warn(&gdev->dev, "failed to read GPIO line names\n");
kfree(names);
return ret;
}
for (i = 0; i < count; i++)
gdev->descs[i].name = names[i];
kfree(names);
return 0;
}
static unsigned long *gpiochip_allocate_mask(struct gpio_chip *gc)
{
unsigned long *p;

2
include/linux/gpio/driver.h
View File

@ -756,8 +756,6 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,
enum gpiod_flags dflags);
void gpiochip_free_own_desc(struct gpio_desc *desc);
int devprop_gpiochip_set_names(struct gpio_chip *gc);
#ifdef CONFIG_GPIOLIB
/* lock/unlock as IRQ */