Section outline

• Select section Day 1: Introduction to Linux Audio Subsystems (7 Hours)

  Day 1: Introduction to Linux Audio Subsystems (7 Hours)

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  Topics:

  • Digital Audio Basics
  • Audio in Linux: OSS vs ALSA
  • ALSA Components and Architecture
  • ALSA Application Development

  Hands-on Labs:

  • Listing sound cards and devices.
  • Developing a minimal Playback and Capture application.
  • Exploring different transfer modes.
• Select section Day 2: ALSA Drivers and PCM Operations (7 Hours)

  Day 2: ALSA Drivers and PCM Operations (7 Hours)

  Topics:

  • ALSA Sound Card Registration
  • Allocating and De-allocating Sound Cards
  • PCM Device Registration and Operations
  • PCM Callbacks and Buffer Management

  Hands-on Labs:

  • Registering a sound card.
  • Implementing PCM playback and capture.
  • Updating buffer positions.
  • Capturing dummy data using a dummy sound card.
• Select section Day 3: ALSA System on Chip (ASoC) Framework (7 Hours)

  Day 3: ALSA System on Chip (ASoC) Framework (7 Hours)

  Topics:

  • Introduction to ASoC
  • ASoC Components: Machine Driver, Platform Driver, Codec Driver
  • ASoC DAI (Digital Audio Interface)
  • Dynamic Audio Power Management (DAPM)
  • Audio Routing Setup

  Hands-on Labs:

  • Kernel configuration and Device Tree modifications.
  • Writing a Dummy Codec Driver.
  • Configuring the I2C-based Codec Driver.
  • Registering the Codec Driver with the ASoC Framework.
  • Simple Audio Card Setup and Clock Integration.
  • Adding Kcontrols to the Codec Driver.