intel/catpt/sysfs.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 //
0003 // Copyright(c) 2020 Intel Corporation. All rights reserved.
0004 //
0005 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
0006 //
0007
0008 #include <linux/pm_runtime.h>
0009 #include "core.h"
0010
0011 static ssize_t fw_version_show(struct device *dev,
0012                    struct device_attribute *attr, char *buf)
0013 {
0014     struct catpt_dev *cdev = dev_get_drvdata(dev);
0015     struct catpt_fw_version version;
0016     int ret;
0017
0018     ret = pm_runtime_resume_and_get(cdev->dev);
0019     if (ret < 0 && ret != -EACCES)
0020         return ret;
0021
0022     ret = catpt_ipc_get_fw_version(cdev, &version);
0023
0024     pm_runtime_mark_last_busy(cdev->dev);
0025     pm_runtime_put_autosuspend(cdev->dev);
0026
0027     if (ret)
0028         return CATPT_IPC_ERROR(ret);
0029
0030     return sprintf(buf, "%d.%d.%d.%d\n", version.type, version.major,
0031                version.minor, version.build);
0032 }
0033 static DEVICE_ATTR_RO(fw_version);
0034
0035 static ssize_t fw_info_show(struct device *dev,
0036                 struct device_attribute *attr, char *buf)
0037 {
0038     struct catpt_dev *cdev = dev_get_drvdata(dev);
0039
0040     return sprintf(buf, "%s\n", cdev->ipc.config.fw_info);
0041 }
0042 static DEVICE_ATTR_RO(fw_info);
0043
0044 static struct attribute *catpt_attrs[] = {
0045     &dev_attr_fw_version.attr,
0046     &dev_attr_fw_info.attr,
0047     NULL
0048 };
0049
0050 static const struct attribute_group catpt_attr_group = {
0051     .attrs = catpt_attrs,
0052 };
0053
0054 const struct attribute_group *catpt_attr_groups[] = {
0055     &catpt_attr_group,
0056     NULL
0057 };