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.
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/("video: hdmi: add helper function for N and CTS")
https://patchwork.kernel.org/patch/8091561/("ASoC: 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):
drm: sti: Add ASoC generic hdmi codec support.
video: hdmi: add helper function for N and CTS
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 | 202 +++++++++++++++++++++++++++++++++
include/linux/hdmi.h | 22 ++++
5 files changed, 469 insertions(+), 17 deletions(-)
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1.9.1