This patchset adds the initial support the spdif input found on the axg SoC family.
The capture itself works well but the rate detection could be enhanced in the future.
Like several other drivers of this type, no check is done to verify if the rate of the input stream is consistent with the rate requested in hw_params()
The automatic rate detection mechanism of this device and the related IRQ proved difficult to work with, as documented in the driver. Several approaches to work around this minor issue have been tried but none provided a complete and reliable solution so far. Hopefully more eyes on this will help figure this out.
Since I authored all Amlogic ASoC drivers (and the related bugs) merged so far, I have added myself as maintainer of them in the last patch of this series.
Jerome Brunet (4): ASoC: meson: axg-toddr: add support for spdifin backend ASoC: meson: add axg spdif input DT binding documentation ASoC: meson: add axg spdif input MAINTAINERS: Add Amlogic sound drivers entry
.../bindings/sound/amlogic,axg-spdifin.txt | 22 + MAINTAINERS | 7 + sound/soc/meson/Kconfig | 9 +- sound/soc/meson/Makefile | 2 + sound/soc/meson/axg-fifo.h | 3 +- sound/soc/meson/axg-spdifin.c | 521 ++++++++++++++++++ sound/soc/meson/axg-toddr.c | 15 +- 7 files changed, 567 insertions(+), 12 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/amlogic,axg-spdifin.txt create mode 100644 sound/soc/meson/axg-spdifin.c