[PATCH v2 0/2] media: synopsys: hdmirx: add HDMI audio capture support

[Igor Paunovic <royalnet026@gmail.com>]

This series adds audio capture support to the Synopsys DesignWare HDMI
RX driver, which currently handles video only. The controller extracts
the audio embedded in the incoming HDMI stream and feeds it to an
on-SoC I2S interface; patch 1 documents #sound-dai-cells in the
binding and patch 2 registers the generic hdmi-codec as a child of the
controller, recovers the audio sample rate from ACR N/CTS and the
measured TMDS character rate, and keeps the local audio reference
clock locked to the source with a periodic FIFO-level worker.

v2 addresses all review feedback on the RFC: Sebastian Reichel's
binding comments (hardware-focused description, documented DAI
indexes, consumer reference in the example) and the S/PDIF DAI
handling, Dmitry Osipenko's platform-device registration comment, the
Sashiko AI review findings on the driver's error and teardown paths,
and the Media CI sparse warnings. Per-patch changelogs are below each
patch.

Re-validated on an Orange Pi 5 Plus (RK3588, i2s7_8ch as the capture
DAI): stable capture at 44.1 kHz and 48 kHz, sample rate switching,
repeated capture start/stop cycles, and abrupt client termination
without worker leaks.

Igor Paunovic (2):
  dt-bindings: media: snps,dw-hdmi-rx: add #sound-dai-cells
  media: synopsys: hdmirx: add HDMI audio capture support

 .../bindings/media/snps,dw-hdmi-rx.yaml       |   9 +
 .../platform/synopsys/hdmirx/snps_hdmirx.c    | 280 ++++++++++++++++++
 .../platform/synopsys/hdmirx/snps_hdmirx.h    |   8 +
 3 files changed, 297 insertions(+)

-- 
2.53.0