[PATCH v6 0/6] drm: bridge: dw-hdmi: Add support for Custom PHYs

Neil Armstrong
2017-04-03T14:42:50Z

The Amlogic GX SoCs implements a Synopsys DesignWare HDMI TX Controller
in combination with a very custom PHY.

Thanks to Laurent Pinchart's changes, the HW report the following :
Detected HDMI TX controller v2.01a with HDCP (meson_dw_hdmi_phy)

The following differs from common PHY integration as managed in the current
driver :
- Amlogic PHY is not configured through the internal I2C link
- Amlogic PHY do not use the ENTMDS, SVSRET, PDDQ, ... signals from the controller
- Amlogic PHY do not export HPD ands RxSense signals to the controller

And finally, concerning the controller integration :
- the Controller registers are not flat memory-mapped, and uses an
addr+read/write register pair to write all registers.
- Inputs only YUV444 pixel data

Most of these uses case are implemented in Laurent Pinchart v5.1 patchset merged
in drm-misc-next branch.

This is why the following patchset implements :
- Configure the Input format from the plat_data
- Add PHY callback to handle HPD and RxSense out of the dw-hdmi driver

To implement the input format handling, the Synopsys HDMIT TX Controller input
V4L bus formats are used and missing formats + documentation are added.

This patchset makes the Amlogic GX SoCs HDMI output successfully work, and is
also tested on the RK3288 ACT8846 EVB Board.

Changes since v5.1 at [7] :
- Rework of the 48bit tables in V4L bus formats documentation
- Add Archit reviewed-by's

Changes since v5 at [6] :
- Small addition in V4L YUV bus formats documentation

Changes since v4 at [5] :
- Rebased on drm-misc-next at bd283d2f66c2
- Fix 4:2:0 bus formats naming
- Renamed function fd_registered to i2c_init in dw-hdmi.c

Changes since v3 at [4] :
- Fix 4:2:0 bus formats naming
- Add separate 36bit and 48bit tables for bus formats documentation
- Added 4:2:0 bus config in hdmi_video_sample
- Moved dw_hdmi documentation in a "bridge" subdir
- Rebase on drm-misc-next at 62c58af32c93

Changes since v2 at [3] :
- Rebase on laurent patch "Extract PHY interrupt setup to a function"
- Reduce phy operations
- Switch the V4L bus formats and encodings instead of custom enum

Changes since v1 at [2] :
- Drop patches submitted by laurent

Changes since RFC at [1] :
- Regmap fixup for 4bytes register access, tested on RK3288 SoC
- Move phy callbacks to phy_ops and move Synopsys PHY calls into default ops
- Move HDMI link data into shared header
- Move Pixel Encoding enum to shared header

[1] http://lkml.kernel.org/r/1484656294-6140-1-git-send-email-narmstrong@baylibre.com
[2] http://lkml.kernel.org/r/1485774318-21916-1-git-send-email-narmstrong@baylibre.com
[3] http://lkml.kernel.org/r/1488468572-31971-1-git-send-email-narmstrong@baylibre.com
[4] http://lkml.kernel.org/r/1488904944-14285-1-git-send-email-narmstrong@baylibre.com
[5] http://lkml.kernel.org/r/1490109161-20529-1-git-send-email-narmstrong@baylibre.com
[6] http://lkml.kernel.org/r/1490864675-17336-1-git-send-email-narmstrong@baylibre.com
[7] http://lkml.kernel.org/r/1490970319-24981-1-git-send-email-narmstrong@baylibre.com

Laurent Pinchart (1):
drm: bridge: dw-hdmi: Extract PHY interrupt setup to a function

Neil Armstrong (5):
media: uapi: Add RGB and YUV bus formats for Synopsys HDMI TX
Controller
documentation: media: Add documentation for new RGB and YUV bus
formats
drm: bridge: dw-hdmi: Switch to V4L bus format and encodings
drm: bridge: dw-hdmi: Add Documentation on supported input formats
drm: bridge: dw-hdmi: Move HPD handling to PHY operations

Documentation/gpu/bridge/dw-hdmi.rst | 15 +
Documentation/gpu/index.rst | 1 +
Documentation/media/uapi/v4l/subdev-formats.rst | 960 +++++++++++++++++++++++-
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 470 ++++++++----
include/drm/bridge/dw_hdmi.h | 68 ++
include/uapi/linux/media-bus-format.h | 13 +-
6 files changed, 1368 insertions(+), 159 deletions(-)
create mode 100644 Documentation/gpu/bridge/dw-hdmi.rst

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1.9.1