Hello,
This patch series refactors all the PHY handling code in order to allow support of vendor PHYs and Synopsys DWC HDMI 2.0 TX PHYs.
The series starts with a few cleanups and small fixes. Patch 1/9 just removes unused code, patch 2/9 moves the color converter code out of the PHY configure function as it isn't PHY-dependent, and patch 3/9 enables color conversion even for DVI as it is needed to output RGB when the input format is YUV.
The next two patches fix the power down (4/9) and up (5/9) sequences to comply with the HDMI TX PHY specifications. They are the biggest functional changes in the whole set, and have been tested successfully (with the rest of the series) on i.MX6Q and R-Car H3. I'll try to perform tests on RK3288 tomorrow if nobody beats me to it (Neil, that's for you :-)). The PLL PHY lock delay has been measured to be between 300µs and 350µs on R-Car H3 and between 400µs and 600µs on i.MX6Q. The PHY power down delay has been measured to be less than 50µs on both platforms, and was often close to instant with power down reported in the first poll iteration. We should thus be more than safe with a 5ms timeout.
Patch 6/9 breaks the PHY operations out. Glue code is then allowed to pass a PHY operations structure to support vendor PHYs. The existing PHY support code is turned into a default Synopsys PHYs implementation for those PHY operations.
Patch 7/9 further refactors the Synopsys PHY configuration function to make it modular, in order to support DWC HDMI 2.0 TX PHYs that have a very different register layout compared to the currently supported PHYs. Glue code is again allowed to provide a custom PHY configuration implementation, with the existing PHY support code turned into the default implementation for all currently supported Synopsys PHYs.
Patch 8/9 is a small cleanup that removes the now unneeded device type for glue code platform data, and patch 9/9 follows by switching the driver to regmap in order to support vendor-specific register access more easily.
Kieran Bingham (2): drm: bridge: dw-hdmi: Add support for custom PHY configuration drm: bridge: dw-hdmi: Remove device type from platform data
Laurent Pinchart (5): drm: bridge: dw-hdmi: Remove unused functions drm: bridge: dw-hdmi: Move CSC configuration out of PHY code drm: bridge: dw-hdmi: Fix the PHY power down sequence drm: bridge: dw-hdmi: Fix the PHY power up sequence drm: bridge: dw-hdmi: Create PHY operations
Neil Armstrong (2): drm: bridge: dw-hdmi: Enable CSC even for DVI drm: bridge: dw-hdmi: Switch to regmap for register access
drivers/gpu/drm/bridge/dw-hdmi.c | 467 +++++++++++++++++----------- drivers/gpu/drm/imx/dw_hdmi-imx.c | 2 - drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 1 - include/drm/bridge/dw_hdmi.h | 33 +- 4 files changed, 304 insertions(+), 199 deletions(-)