The usb_ah STREAMS module enables the USB input control device which is a member of the Human Interface Device (HID) class and provides support for volume change and mute button. The usb_ah module is pushed on top of a HID class driver instance (see hid(7D)) and below an Audio Control class driver instance (see usb_ac(7D)). It translates the HID specific events to the events that are supported by the Solaris audio mixer framework.

See attributes(5) for descriptions of the following attributes:

/kernel/strmod/usb_ah

32-bit ELF kernel STREAMS module

/kernel/strmod/sparcv9/usb_ah

64-bit ELF kernel STREAMS module

mixerctl(1), hid(7D), usba(7D), usb_ac(7D), usb_as(7D), usb_mid(7D), audio(7I), mixer(7I)

STREAMS Programming Guide

System Administration Guide: Basic Administration

Universal Serial Bus Specification 1.0 and 1.1

Device Class Definition for Human Interface Devices (HID) 1.1

None

If USB audio drivers are not loaded, buttons will not be active.