Am Dienstag, 28. August 2018, 12:24:43 CEST schrieb Damian Kos: > 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 with te Kconfig issue in patch5 fixed, this series tested on rk3288 (analogix-dp) and rk3399 (analogix-dp + cadence-dp) Everything seems to work that worked before. Tested-by: Heiko Stuebner <heiko@xxxxxxxxx>
