sound/soc/intel/catpt/sysfs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // Copyright(c) 2020 Intel Corporation. All rights reserved.
   4 //
   5 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
   6 //
   7
   8 #include <linux/pm_runtime.h>
   9 #include "core.h"
  10
  11 static 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 < 0 && ret != -EACCES)
  20                 return ret;
  21
  22         ret = catpt_ipc_get_fw_version(cdev, &version);
  23
  24         pm_runtime_mark_last_busy(cdev->dev);
  25         pm_runtime_put_autosuspend(cdev->dev);
  26
  27         if (ret)
  28                 return CATPT_IPC_ERROR(ret);
  29
  30         return sysfs_emit(buf, "%d.%d.%d.%d\n", version.type, version.major,
  31                           version.minor, version.build);
  32 }
  33 static DEVICE_ATTR_RO(fw_version);
  34
  35 static ssize_t fw_info_show(struct device *dev,
  36                             struct device_attribute *attr, char *buf)
  37 {
  38         struct catpt_dev *cdev = dev_get_drvdata(dev);
  39
  40         return sysfs_emit(buf, "%s\n", cdev->ipc.config.fw_info);
  41 }
  42 static DEVICE_ATTR_RO(fw_info);
  43
  44 static struct attribute *catpt_attrs[] = {
  45         &dev_attr_fw_version.attr,
  46         &dev_attr_fw_info.attr,
  47         NULL
  48 };
  49
  50 static const struct attribute_group catpt_attr_group = {
  51         .attrs = catpt_attrs,
  52 };
  53
  54 const struct attribute_group *catpt_attr_groups[] = {
  55         &catpt_attr_group,
  56         NULL
  57 };