Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Mika Westerberg |
153 |
80.95% |
1 |
16.67% |
| Christophe Leroy |
14 |
7.41% |
1 |
16.67% |
| Christophe Blaess |
12 |
6.35% |
1 |
16.67% |
| Linus Walleij |
7 |
3.70% |
2 |
33.33% |
| Jan Kundrát |
3 |
1.59% |
1 |
16.67% |
| Total |
189 |
|
6 |
|
// 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
* @fwnode: Property Node containing the gpio-line-names property
*
* 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 firmware node and should not be released
* by the caller.
*/
void devprop_gpiochip_set_names(struct gpio_chip *chip,
const struct fwnode_handle *fwnode)
{
struct gpio_device *gdev = chip->gpiodev;
const char **names;
int ret, i;
int count;
count = fwnode_property_read_string_array(fwnode, "gpio-line-names",
NULL, 0);
if (count < 0)
return;
if (count > gdev->ngpio)
count = gdev->ngpio;
names = kcalloc(count, sizeof(*names), GFP_KERNEL);
if (!names)
return;
ret = fwnode_property_read_string_array(fwnode, "gpio-line-names",
names, count);
if (ret < 0) {
dev_warn(&gdev->dev, "failed to read GPIO line names\n");
kfree(names);
return;
}
for (i = 0; i < count; i++)
gdev->descs[i].name = names[i];
kfree(names);
}
EXPORT_SYMBOL_GPL(devprop_gpiochip_set_names);