The purpose of this patchset is to improve the support of the i2s interface of the synopsys hdmi controller.
Once applied, the interface should support all the usual i2s bus formats, 8 channels playback and properly setup the channel number and allocation in the infoframes.
Also, the dw-hdmi i2s interface will now provide the eld to the generic hdmi-codec so it can expose the related controls to user space.
This work was inspired by Jonas Karlman's work, available here [0].
This was tested the Amlogic meson-g12a-sei510 platform. For this specific platform, which uses codec2codec links, there is a runtime dependency for patch 8 on this ASoC series [1].
[0]: https://github.com/Kwiboo/linux-rockchip/commits/rockchip-5.2-for-libreelec-... [1]: https://lkml.kernel.org/r/20190725165949.29699-1-jbrunet@baylibre.com
Jerome Brunet (8): drm/bridge: dw-hdmi-i2s: support more i2s format drm/bridge: dw-hdmi: move audio channel setup out of ahb drm/bridge: dw-hdmi: set channel count in the infoframes drm/bridge: dw-hdmi-i2s: enable lpcm multi channels drm/bridge: dw-hdmi-i2s: set the channel allocation drm/bridge: dw-hdmi-i2s: reset audio fifo before applying new params drm/bridge: dw-hdmi-i2s: enable only the required i2s lanes drm/bridge: dw-hdmi-i2s: add .get_eld support
.../drm/bridge/synopsys/dw-hdmi-ahb-audio.c | 20 ++----- .../gpu/drm/bridge/synopsys/dw-hdmi-audio.h | 1 + .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 59 +++++++++++++++++-- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 37 ++++++++++++ drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 13 +++- include/drm/bridge/dw_hdmi.h | 2 + 6 files changed, 107 insertions(+), 25 deletions(-)