kernel/sound/aoa/soundbus/sysfs.c

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2024-07-22 17:22:30 +08:00
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/stat.h>
/* FIX UP */
#include "soundbus.h"
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct soundbus_dev *sdev = to_soundbus_device(dev);
struct platform_device *of = &sdev->ofdev;
int length;
if (*sdev->modalias) {
strscpy(buf, sdev->modalias, sizeof(sdev->modalias) + 1);
strcat(buf, "\n");
length = strlen(buf);
} else {
length = sprintf(buf, "of:N%pOFn%c%s\n",
of->dev.of_node, 'T',
of_node_get_device_type(of->dev.of_node));
}
return length;
}
static DEVICE_ATTR_RO(modalias);
static ssize_t name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct soundbus_dev *sdev = to_soundbus_device(dev);
struct platform_device *of = &sdev->ofdev;
return sprintf(buf, "%pOFn\n", of->dev.of_node);
}
static DEVICE_ATTR_RO(name);
static ssize_t type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct soundbus_dev *sdev = to_soundbus_device(dev);
struct platform_device *of = &sdev->ofdev;
return sprintf(buf, "%s\n", of_node_get_device_type(of->dev.of_node));
}
static DEVICE_ATTR_RO(type);
struct attribute *soundbus_dev_attrs[] = {
&dev_attr_name.attr,
&dev_attr_type.attr,
&dev_attr_modalias.attr,
NULL,
};