sysfs.c 1.2 KB

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  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. static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
  8. char *buf)
  9. {
  10. struct soundbus_dev *sdev = to_soundbus_device(dev);
  11. struct platform_device *of = &sdev->ofdev;
  12. if (*sdev->modalias)
  13. return sysfs_emit(buf, "%s\n", sdev->modalias);
  14. else
  15. return sysfs_emit(buf, "of:N%pOFn%c%s\n",
  16. of->dev.of_node, 'T',
  17. of_node_get_device_type(of->dev.of_node));
  18. }
  19. static DEVICE_ATTR_RO(modalias);
  20. static ssize_t name_show(struct device *dev,
  21. struct device_attribute *attr, char *buf)
  22. {
  23. struct soundbus_dev *sdev = to_soundbus_device(dev);
  24. struct platform_device *of = &sdev->ofdev;
  25. return sysfs_emit(buf, "%pOFn\n", of->dev.of_node);
  26. }
  27. static DEVICE_ATTR_RO(name);
  28. static ssize_t type_show(struct device *dev,
  29. struct device_attribute *attr, char *buf)
  30. {
  31. struct soundbus_dev *sdev = to_soundbus_device(dev);
  32. struct platform_device *of = &sdev->ofdev;
  33. return sysfs_emit(buf, "%s\n", of_node_get_device_type(of->dev.of_node));
  34. }
  35. static DEVICE_ATTR_RO(type);
  36. struct attribute *soundbus_dev_attrs[] = {
  37. &dev_attr_name.attr,
  38. &dev_attr_type.attr,
  39. &dev_attr_modalias.attr,
  40. NULL,
  41. };