Wolfson Open Source

Wolfson updates in 2.6.28

Version 2.6.28 of the Linux kernel was released on Christmas day. This version contains a number of updates to Wolfson drivers, including:

WM8728 driver released

A Linux driver for the WM8728, a high performance stereo DAC designed for audio applications such as DVD, home theatre systems and digital TV, has been released. The driver can be obtained from our ASoC repository

Wolfson device support in Linux 2.6.27

Version 2.6.27 of the Linux kernel was released yesterday. This release introduces drivers for the WM8510 and WM8990 as well as enhancements to existing drivers, particularly the WM9713.

WM8903 driver release

An initial Linux driver for the WM8903 audio CODEC has been released. The driver can be obtained via our ASoC repository.

ASoC changes in Linux 2.6.26

Linux 2.6.26 integrates a large number of changes to the ASoC subsystem, including:

  • Support for TI OMAP processors from 1510 to 2040.
  • Support for TI DaVinci processors.
  • Support for the AC97 controller on PXA 3xx processors.

along with numerous updates to codec drivers, improvements to diagnostic output and updates to reflect current kernel coding standards.

Initial release of ALSA scenario library

I've now released the first version (v0.1) of the ALSA scenario (or use case) manager. It's currently a stand alone library and can either be linked against alsa-lib or salsa. This library is designed to provide userspace applications (e.g. Pulse Audio) with a generic API to change the audio hardware scenario or use case.

Features :-

  • Scenario get() and set()
  • Mixer alias (i.e. what is the correct volume control for scenario x)
  • Scenario dump

WM8580 driver released

A Linux driver supporting the core functionality of the WM8580 audio CODEC has been released in the ASoC repository.

ASoC Linux 2.6.25

Linux version 2.6.25 integrates a number of updates to the ALSA System on Chip subsystem. Among the changes integrated are:

PXA3xx AC97 support in ASoC v1

Linux support for the AC97 controller provided by the Marvel PXA3xx SoC processors has now been added to version 1 of the ASoC drivers and also to the non-ASoC PXA AC97 driver. Updated versions of these drivers are available from the dev branch ASoC git tree and the changes are intended for merge into Linux 2.6.26.

WM8900 driver released

An ASoC-based Linux driver for the WM8900 CODEC with Class G Headphone Driver is now available from the ALSA System on a Chip repository. Features supported by this driver include:

  • Full analogue and digital path support
  • DAPM integration for minimal power consumption
  • Automatic FLL configuration from the full range of supported input frequencies
Syndicate content
Copyright Wolfson Microelectronics 2006-8