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# bcm5974.4

`bcm5974` — Wellspring 触控板驱动

## 名称

`bcm5974`

## 概要

要将此驱动编译进内核，请在内核配置文件中加入以下行：

> device bcm5974 device hidbus device hid device usbhid device usb device evdev

或者，要在引导时以模块形式加载该驱动，请在 loader.conf(5) 中加入以下行：

```sh
bcm5974_load="YES"
```

## 描述

`bcm5974` 驱动为许多 Apple 笔记本中使用的 Wellspring 触控板提供支持。

要在 X(7)（`ports/x11/xorg-docs`）中使用多点触控设备，请安装 `ports/x11-drivers/xf86-input-libinput`。

## 文件

`bcm5974` 创建一个伪设备文件 **`/dev/input/eventX`**，将多点触控设备呈现为输入事件设备。

## 参见

hid(4), loader.conf(5), xorg.conf(5)（`ports/x11/xorg`）, libinput(4)（`ports/x11-drivers/xf86-input-libinput`）。

## 作者

`bcm5974` 驱动由 Vladimir Kondratyev <wulf@FreeBSD.org> 编写。它基于 Huang Wen Hui <huanghwh@gmail.com> 编写的 [wsp(4)](https://github.com/FreeBSD-Ask/freebsd-man-sc/blob/main/man4/wsp.4.md) 驱动。

## 缺陷

`bcm5974` 无法像 [sysmouse(4)](/man/man4/sysmouse.4.md) 那样工作。


---

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