[PATCH v3 0/4] Allow retrieving accessory detection reference on MT8188

[Nícolas F. R. A. Prado]

This series enables the MT8188-MT6359 sound driver to retrieve the
MT6359 ACCDET sound component from a mediatek,accdet DT property, which
allows detecting jack insertion/removal.

Patch 1 describes the new property in the binding. Patch 2 implements
the sound component retrieval in the common MTK soundcard driver. Patch
4 updates the MT8188-MT6359 sound driver to register the audio jack and
initialize the ACCDET driver for detection, if the property is present.

Patch 3 adds a stub to prevent a linker failure in case the
MT6359-ACCDET config is disabled.

Tested on the Genio 700 EVK board.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
---
Changes in v3:
- Removed the config select for CONFIG_SND_SOC_MT6359_ACCDET
- Added patch 3 with stub for mt6359_accdet_enable_jack_detect()
- Fixed return checks for mediatek,accdet handling to check for non-null
  rather than !IS_ERR(), and added error messages
- Link to v2: https://lore.kernel.org/r/20250304-mt8188-accdet-v2-0-27f496c4aede@xxxxxxxxxxxxx

Changes in v2:
- Added CONFIG_SND_SOC_MT6359_ACCDET select in
  CONFIG_SND_SOC_MT8188_MT6359 to avoid build failure
- Clarified in mediatek,accdet dt-binding and commit description that
  the property should only be present if the accdet is actually used
- Link to v1: https://lore.kernel.org/r/20250214-mt8188-accdet-v1-0-6bbd5483855b@xxxxxxxxxxxxx

---
Nícolas F. R. A. Prado (4):
      ASoC: dt-bindings: mediatek,mt8188-mt6359: Add mediatek,accdet
      ASoC: mediatek: common: Handle mediatek,accdet property
      ASoC: mediatek: mt6359: Add stub for mt6359_accdet_enable_jack_detect
      ASoC: mediatek: mt8188-mt6359: Add accdet headset jack detect support

 .../bindings/sound/mediatek,mt8188-mt6359.yaml     |  8 ++++
 sound/soc/codecs/mt6359-accdet.h                   |  9 +++++
 sound/soc/mediatek/common/mtk-soc-card.h           |  1 +
 sound/soc/mediatek/common/mtk-soundcard-driver.c   | 19 +++++++++-
 sound/soc/mediatek/mt8188/mt8188-mt6359.c          | 43 ++++++++++++++++++++++
 5 files changed, 79 insertions(+), 1 deletion(-)
---
base-commit: 565351ae7e0cee80e9b5ed84452a5b13644ffc4d
change-id: 20250214-mt8188-accdet-4deabb85534d

Best regards,
-- 
Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>