ASoC: dapm: Add encoder and decoder widget types to kcontrol handling

[singalsu]

This patch fixes the issue where encoder or decoder widget types are assigned kcontrols in a topology but get ignored. The controls were parsed successfully but were not registered as ALSA kcontrols.

In dapm_create_or_share_kcontrol() the snd_soc_dapm_encoder and the snd_soc_dapm_decoder are added to the switch statement to be handled similarly as e.g. the snd_soc_dapm_effect for assigning a proper long control name.

In dapm_widget_show_component() the snd_soc_dapm_encoder and the snd_soc_dapm_decoder are added to switch statement to let them to be shown in the debugfs power state output.

In snd_soc_dapm_new_widgets() the snd_soc_dapm_encoder and the snd_soc_dapm_decoder are added to same switch case handling as e.g. snd_soc_dapm_effect to be registered with dapm_new_pga(). The previous operation with default in the switch statement silently ignored them. Note: Despite the function name, the dapm_new_pga() is generic utility that calls
dapm_create_or_share_kcontrol() for each kcontrol of the widget.

[Copilot]

Pull request overview

Adds snd_soc_dapm_encoder and snd_soc_dapm_decoder widget types to three switch statements in the DAPM core so that kcontrols attached to encoder/decoder widgets in topology are properly registered, named, and exposed via debugfs—mirroring the existing handling for snd_soc_dapm_effect.

Changes:

• Include encoder/decoder cases in dapm_create_or_share_kcontrol() for proper long control name composition.
• Include encoder/decoder cases in dapm_widget_show_component() for debugfs power state output.
• Include encoder/decoder cases in snd_soc_dapm_new_widgets() so dapm_new_pga() is invoked to register their kcontrols.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[singalsu]

Note: This is needed for thesofproject/sof#10814 to setup the SOF MFCC module for desired operation mode and provide the switch control notifications for VAD status change.