---
title: tDeviceRequestDirection
framework: Kernel
role: symbol
role_heading: Enumeration
platforms: [macOS 10.11+]
path: kernel/tdevicerequestdirection
---

# tDeviceRequestDirection

## Declaration

```occ
typedef enum tDeviceRequestDirection : unsigned int {
    ...
} tDeviceRequestDirection;
```

## Topics

### Constants

- [kRequestDirectionIn](kernel/tdevicerequestdirection/krequestdirectionin.md)
- [kRequestDirectionOut](kernel/tdevicerequestdirection/krequestdirectionout.md)