1// SPDX-License-Identifier: GPL-2.0
2#include <linux/kernel.h>
3#include <linux/of.h>
4#include <linux/stat.h>
5/* FIX UP */
6#include "soundbus.h"
7
8static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
9 char *buf)
10{
11 struct soundbus_dev *sdev = to_soundbus_device(dev);
12 struct platform_device *of = &sdev->ofdev;
13
14 if (*sdev->modalias)
15 return sysfs_emit(buf, fmt: "%s\n", sdev->modalias);
16 else
17 return sysfs_emit(buf, fmt: "of:N%pOFn%c%s\n",
18 of->dev.of_node, 'T',
19 of_node_get_device_type(np: of->dev.of_node));
20}
21static DEVICE_ATTR_RO(modalias);
22
23static ssize_t name_show(struct device *dev,
24 struct device_attribute *attr, char *buf)
25{
26 struct soundbus_dev *sdev = to_soundbus_device(dev);
27 struct platform_device *of = &sdev->ofdev;
28
29 return sysfs_emit(buf, fmt: "%pOFn\n", of->dev.of_node);
30}
31static DEVICE_ATTR_RO(name);
32
33static ssize_t type_show(struct device *dev,
34 struct device_attribute *attr, char *buf)
35{
36 struct soundbus_dev *sdev = to_soundbus_device(dev);
37 struct platform_device *of = &sdev->ofdev;
38
39 return sysfs_emit(buf, fmt: "%s\n", of_node_get_device_type(np: of->dev.of_node));
40}
41static DEVICE_ATTR_RO(type);
42
43struct attribute *soundbus_dev_attrs[] = {
44 &dev_attr_name.attr,
45 &dev_attr_type.attr,
46 &dev_attr_modalias.attr,
47 NULL,
48};
49

source code of linux/sound/aoa/soundbus/sysfs.c