From: Damian Kos <dkos@cadence.com>
To: "David Airlie" <airlied@linux.ie>,
"Rob Herring" <robh+dt@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Archit Taneja" <architt@codeaurora.org>,
"Andrzej Hajda" <a.hajda@samsung.com>,
"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>,
"Gustavo Padovan" <gustavo@padovan.org>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Sean Paul" <sean@poorly.run>, "Sandy Huang" <hjc@rock-chips.com>,
"Heiko Stübner" <heiko@sntech.de>,
"Quentin Schulz" <quentin.schulz@free-electrons.com>,
"Damian Kos" <dkos@cadence.com>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org
Cc: <pgaj@cadence.com>, <ltyrala@cadence.com>, <rafalc@cadence.com>,
<jartur@cadence.com>, <piotrs@cadence.com>,
<quentin.schulz@bootlin.com>, <jbergsagel@ti.com>
Subject: [PATCH v5 0/5] drm: add support for Cadence MHDP DPI/DP bridge.
Date: Tue, 25 Sep 2018 10:13:30 +0100 [thread overview]
Message-ID: <1537866837-4408-1-git-send-email-dkos@cadence.com> (raw)
Hello!
This is the series of patches that will add support for the Cadence's DPI/DP
bridge. Please note that this is a preliminary version of the driver and there
will be more patches in the future with updates, fixes and improvements.
Please keep that in mind when looking at FIXME/TODO/XXX comments.
Initially, MHDP driver was developed as a DRM bridge driver and was planed to
be placed in drivers/gpu/drm/bridge/mhdp.c. However, there was already
a driver for Cadence's DP controller developed by RockChip, but that driver
uses the different DRM framework and looks like a part of a bigger system.
Both controllers (including firmware) are quite different internally
(MST/FEC/DSC support, link training done by driver, additional commands, IRQ's
etc.) but they have similar register map, except for Framer/Streamer (which is
noticeably different), so they appear similar.
The following patches contain:
- Moving common code to drivers/gpu/drm/bridge/cdns-mhdp-common.* and
modifying it a bit (mostly new prefixes for functions and data types) so it
can be used by two, higher level, drivers.
- Modifying existing RockChip's DP driver to use the common code after changes
made to it (use the new cdns_mhdp_device structure and new function names).
- Modifying DRM helpers a bit. Some are required for new driver, some are
updates from DP 1.2 to 1.3 or 1.4.
- Adding documentation for device tree bindings.
- Adding preliminary Cadence DPI/DP bridge driver.
Some of the things that will be added later on include (but are not limited
to):
- Support for Cadence SD0801 PHY (PHY's driver should be on the way by now)
- MST support
- DSC support
- FEC support
- HDCP support
Changes in v2:
- Added actual description of what the patch contains, what is it for and
what's going on here in general.
- New structure. Now we have one common low level driver + two high level
drivers - one for RockChip with minimum changes and one, more general, for
Cadence.
- Dropped some changes made to DRM helpers.
- Updated the device tree bindings document.
Changes in v3:
- Corrected dt-bindings document
- Enabled some clocks at startup (since FW doesn't do that anymore).
- Changed Firmware file name to match the file on Linux Firmware repo.
- Added SST audio support
- Made common functions (in cdns-mhdp-common.*) public.
Changes in v4:
- Fixed Kconfig in drm/rockchip
- Fixed Signed-offs
- dp_link_status() is no longer public since it's used only in drm_dp_helper.c
- Replaced EXTRA_CFLAGS with ccflags-y in drm/rockchip Makefile
Changes in v5:
- Fixed Kconfig in drm/rockchip again
- Moved cdn-dp-reg.h (cdns-mhdp-common.h) to include/drm/bridge instead of
drivers/gpu/drm/bridge/
- Updated the mhdp_validate_cr function
Damian Kos (1):
drm/rockchip: prepare common code for cdns and rk dpi/dp driver
Quentin Schulz (4):
drm/dp: fix link probing for devices supporting DP 1.4+
drm/dp: make dp_get_lane_status usable from outside of the core
dt-bindings: drm/bridge: Document Cadence MHDP bridge bindings
drm: bridge: add support for Cadence MHDP DPI/DP bridge
.../bindings/display/bridge/cdns,mhdp.txt | 43 +
drivers/gpu/drm/bridge/Kconfig | 9 +
drivers/gpu/drm/bridge/Makefile | 3 +
drivers/gpu/drm/bridge/cdns-mhdp-common.c | 1107 ++++++++++++++
drivers/gpu/drm/bridge/cdns-mhdp.c | 1304 +++++++++++++++++
drivers/gpu/drm/drm_dp_helper.c | 39 +-
drivers/gpu/drm/rockchip/Kconfig | 4 +-
drivers/gpu/drm/rockchip/Makefile | 2 +-
drivers/gpu/drm/rockchip/cdn-dp-core.c | 234 +--
drivers/gpu/drm/rockchip/cdn-dp-core.h | 43 +-
drivers/gpu/drm/rockchip/cdn-dp-reg.c | 969 ------------
.../drm/bridge/cdns-mhdp-common.h | 135 +-
include/drm/drm_dp_helper.h | 2 +
13 files changed, 2744 insertions(+), 1150 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt
create mode 100644 drivers/gpu/drm/bridge/cdns-mhdp-common.c
create mode 100644 drivers/gpu/drm/bridge/cdns-mhdp.c
delete mode 100644 drivers/gpu/drm/rockchip/cdn-dp-reg.c
rename drivers/gpu/drm/rockchip/cdn-dp-reg.h => include/drm/bridge/cdns-mhdp-common.h (81%)
--
2.17.1
next reply other threads:[~2018-09-25 9:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-25 9:13 Damian Kos [this message]
2018-09-25 9:13 ` [PATCH v5 1/5] drm/rockchip: prepare common code for cdns and rk dpi/dp driver Damian Kos
2018-09-25 9:13 ` [PATCH v5 2/5] drm/dp: fix link probing for devices supporting DP 1.4+ Damian Kos
2018-09-25 11:18 ` Heiko Stuebner
2018-09-25 9:13 ` [PATCH v5 3/5] drm/dp: make dp_get_lane_status usable from outside of the core Damian Kos
2018-09-28 7:21 ` Sean Paul
2018-09-25 9:13 ` [PATCH v5 4/5] dt-bindings: drm/bridge: Document Cadence MHDP bridge bindings Damian Kos
2018-09-27 17:38 ` Rob Herring
2018-09-25 9:13 ` [PATCH v5 5/5] drm: bridge: add support for Cadence MHDP DPI/DP bridge Damian Kos
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