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* [PATCH 0/5] drm/meson: Add support for HDMI2.0 YUV420 4k60
@ 2019-05-20 13:37 Neil Armstrong
  2019-05-20 13:37 ` [PATCH 1/5] drm/bridge: dw-hdmi: allow ycbcr420 modes for >= 0x200a Neil Armstrong
                   ` (4 more replies)
  0 siblings, 5 replies; 14+ messages in thread
From: Neil Armstrong @ 2019-05-20 13:37 UTC (permalink / raw)
  To: a.hajda, Laurent.pinchart
  Cc: jernej.skrabec, heiko, Neil Armstrong, maxime.ripard, jonas, hjc,
	dri-devel, linux-kernel, hverkuil, linux-amlogic

The Synopsys DW-HDMI CSC does not support downsampling to YUV420, so
the encoder must downsamle before, feeding the controller with a YUV420
pixel stream.

The encoder must declare the new bus format enc encoding the bridge, in
order to take it in account.

To solve this, a new format_set() bridge op is added, permitting setting
a new input bus format and encoding to the bridge chain.

This solves YUV420 setup, but also solved setting 10bit, 12bit or 16bit
input bus format in order to support HDMI >8bit depths.

The DW-HDMI controller is updated to dynamically select a coherent output
bus format depending on the input bus format and on the internal CSC
supported modes.

The DW-HDMI is also updated to support the connector display_info bus_formats
entry to permit forcing a specific output bus format to force, for example,
an YUV444 output format instead of the default RGB output bus format.

Only the meson DRM dw_hdmi glue allows ycbcr420 modes, so no breakage
is expected here.

The remaining patches adds support for 4:2:0 output and clock setup for
the meson DW-HDMI glue, and how YUV444 output can be forced.

Changes since rfc:
* Fixed small logic error in drm_bridge_format_set()
* rebased on v5.2-rc1

Neil Armstrong (5):
  drm/bridge: dw-hdmi: allow ycbcr420 modes for >= 0x200a
  drm/bridge: add encoder support to specify bridge input format
  drm/bridge: dw-hdmi: Add support for dynamic output format setup
  drm/meson: Add YUV420 output support
  drm/meson: Output in YUV444 if sink supports it

 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 127 ++++++++++++++++++++--
 drivers/gpu/drm/drm_bridge.c              |  35 ++++++
 drivers/gpu/drm/meson/meson_dw_hdmi.c     | 111 ++++++++++++++++---
 drivers/gpu/drm/meson/meson_vclk.c        |  93 ++++++++++++----
 drivers/gpu/drm/meson/meson_vclk.h        |   7 +-
 drivers/gpu/drm/meson/meson_venc.c        |   6 +-
 drivers/gpu/drm/meson/meson_venc.h        |  11 ++
 drivers/gpu/drm/meson/meson_venc_cvbs.c   |   3 +-
 include/drm/bridge/dw_hdmi.h              |   1 +
 include/drm/drm_bridge.h                  |  19 ++++
 10 files changed, 358 insertions(+), 55 deletions(-)

-- 
2.21.0


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^ permalink raw reply	[flat|nested] 14+ messages in thread

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Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-20 13:37 [PATCH 0/5] drm/meson: Add support for HDMI2.0 YUV420 4k60 Neil Armstrong
2019-05-20 13:37 ` [PATCH 1/5] drm/bridge: dw-hdmi: allow ycbcr420 modes for >= 0x200a Neil Armstrong
2019-05-22  6:07   ` Andrzej Hajda
2019-06-05 12:59     ` Neil Armstrong
2019-05-20 13:37 ` [PATCH 2/5] drm/bridge: add encoder support to specify bridge input format Neil Armstrong
2019-05-27 15:29   ` Jernej Škrabec
2019-06-07 13:38   ` Laurent Pinchart
2019-06-07 14:11     ` Neil Armstrong
2019-05-20 13:37 ` [PATCH 3/5] drm/bridge: dw-hdmi: Add support for dynamic output format setup Neil Armstrong
2019-05-27 15:30   ` Jernej Škrabec
2019-05-20 13:37 ` [PATCH 4/5] drm/meson: Add YUV420 output support Neil Armstrong
2019-06-06 17:11   ` Kevin Hilman
2019-05-20 13:37 ` [PATCH 5/5] drm/meson: Output in YUV444 if sink supports it Neil Armstrong
2019-06-06 17:16   ` Kevin Hilman

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