Many of Samsung's Exynos 4 devices share the same midas-audio driver to handle the codec setup. While most of these devices, including the Midas itself, use the jack detection provided by the WM8994 driver, other devices such as the Samsung Galaxy Tab 3 8.0 (lt01) use two GPIOs and an ADC channel to determine jack insertion, the jack's type, and button presses (for headsets with volume up/down/play buttons). In the downstream kernel, this behavior is implemented in the sec-jack driver[1], and the per-device settings are configured in *-jack.c files in the mach folder (see e.g. the Tab 3's implementation[2]). This patchset implements this mechanism in the midas_wm1811.c driver, and adds new DTS options to allow for its configuration. It also enables jack detection for the Samsung Galaxy Tab 3 8.0. A very similar mechanism was already present in the aries_wm8994.c driver[3]; this implementation heavily borrows from it, though there are a few extra cleanups as well. Signed-off-by: Artur Weber <aweber.kernel@xxxxxxxxx> [1] https://github.com/gr8nole/android_kernel_samsung_smdk4x12/blob/lineage-14.1/drivers/misc/sec_jack.c [2] https://github.com/gr8nole/android_kernel_samsung_smdk4x12/blob/lineage-14.1/arch/arm/mach-exynos/tab3-jack.c [3] https://github.com/torvalds/linux/blob/master/sound/soc/samsung/aries_wm8994.c --- Artur Weber (3): ASoC: dt-bindings: samsung,midas-audio: Add GPIO-based headset jack detection ASoC: samsung: midas_wm1811: Add GPIO-based headset jack detection ARM: dts: samsung: exynos4212-tab3: Fix headset mic, add jack detection .../bindings/sound/samsung,midas-audio.yaml | 30 +++ arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi | 23 +- sound/soc/samsung/Kconfig | 2 +- sound/soc/samsung/midas_wm1811.c | 265 ++++++++++++++++++++- 4 files changed, 305 insertions(+), 15 deletions(-) --- base-commit: e67572cd2204894179d89bd7b984072f19313b03 change-id: 20240502-midas-wm1811-gpio-jack-b10226b17ecc Best regards, -- Artur Weber <aweber.kernel@xxxxxxxxx>
