This patchset implements audio interface in HDMI drm driver. Implementation is based on ASoC generic hdmi codec driver( https://patchwork.kernel.org/patch/8713141/). It also proposes helper functions to compute N and CTS parameters according to HDMI 1.4b specification.
V4: fixes for "video: hdmi: add helper functions for N and CTS" - typo error and additional comments - cts_1_ratio computation - warning reported by kbuild test robot - add rounded value for 297/1.001 MHz
V3: - video: hdmi: add helper function for N and CTS Also used on Mediatek platform (https://patchwork.kernel.org/patch/8887341) delta vs V2: - typo fixes - if/else code optimisation - drm: sti: Add ASoC generic hdmi codec support. - typo fixes - add audio registers in debugfs information
V2: RFC https://patchwork.kernel.org/patch/8091531/(%22video: hdmi: add helper function for N and CTS") https://patchwork.kernel.org/patch/8091561/(%22ASoC: hdmi-codec: Add hdmi-codec for external HDMI-encoders") - patch: video: hdmi: add helper function for N and CTS Fixes based on Russel King remarks - Duplicate function to have a separte treatment for coherent and non-coherent clocks - Add ratio field for alternate CTS value - Clock frequency in Hz for TMDS and audio clocks - Add information concerning clocks and CTS calculation.
V1: This RFC is the implementation of audio HDMI on sti platform based on generic hdmi-codec driver: https://patchwork.kernel.org/patch/7215271/ ("ASoC: hdmi-codec: Add hdmi-codec for external HDMI-encoders") https://patchwork.kernel.org/patch/8062611/ ("video: hdmi: add helper function for N and CTS") Arnaud Pouliquen (2): video: hdmi: add helper functions for N and CTS drm: sti: Add ASoC generic hdmi codec support.
drivers/gpu/drm/sti/Kconfig | 1 + drivers/gpu/drm/sti/sti_hdmi.c | 248 ++++++++++++++++++++++++++++++++++++++--- drivers/gpu/drm/sti/sti_hdmi.h | 13 +++ drivers/video/hdmi.c | 208 ++++++++++++++++++++++++++++++++++ include/linux/hdmi.h | 24 ++++ 5 files changed, 477 insertions(+), 17 deletions(-)