sysfs.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2//
 3// Copyright(c) 2020 Intel Corporation
 4//
 5// Author: Cezary Rojewski <cezary.rojewski@intel.com>
 6//
 7
 8#include <linux/pm_runtime.h>
 9#include "core.h"
10
11static ssize_t fw_version_show(struct device *dev,
12			       struct device_attribute *attr, char *buf)
13{
14	struct catpt_dev *cdev = dev_get_drvdata(dev);
15	struct catpt_fw_version version;
16	int ret;
17
18	ret = pm_runtime_resume_and_get(cdev->dev);
19	if (ret)
20		return ret;
21
22	ret = catpt_ipc_get_fw_version(cdev, &version);
23
24	pm_runtime_put_autosuspend(cdev->dev);
25
26	if (ret)
27		return CATPT_IPC_ERROR(ret);
28
29	return sysfs_emit(buf, "%d.%d.%d.%d\n", version.type, version.major,
30			  version.minor, version.build);
31}
32static DEVICE_ATTR_RO(fw_version);
33
34static ssize_t fw_info_show(struct device *dev,
35			    struct device_attribute *attr, char *buf)
36{
37	struct catpt_dev *cdev = dev_get_drvdata(dev);
38
39	return sysfs_emit(buf, "%s\n", cdev->ipc.config.fw_info);
40}
41static DEVICE_ATTR_RO(fw_info);
42
43static struct attribute *catpt_attrs[] = {
44	&dev_attr_fw_version.attr,
45	&dev_attr_fw_info.attr,
46	NULL
47};
48
49static const struct attribute_group catpt_attr_group = {
50	.attrs = catpt_attrs,
51};
52
53const struct attribute_group *catpt_attr_groups[] = {
54	&catpt_attr_group,
55	NULL
56};