this series is built around the DisplayPort driver. The dpi/dpintf driver and the added helper functions are required for the DisplayPort driver to work.
This v9 is not quite ready yet, as project constraints forces me to publish v9 this week, I'm sorry if it's not standard practice.
Moreover, it is still un-tested on a recent kernel. The integration kernel we are using is still based on 5.10... but we are actively working on bringing up a mt8195 integration branch on 5.17. The patches have been rebased on top of next-20220301 and have been tested to build sucessfully (no functional testing).
Changes from v8: - The DP-Phy now has its own dt-bindings and now shares a regmap using the syscon facility with the DP driver. - hot plug detection has been removed from the Embedded Display Port. patch and moved to the patch adding External Display Port support. - started working on better error handling for the mtk_dp driver. - rebased on linux-next. - removal of tvd pll clocks re-introduced by mistake. - various coding style fixes.
Things that are in my todolist for v10: - fixing the train_handler in the mtk_dp driver, as I haven't been able to reproduce locally (hopefully migrating to running the tests on a more recent kernel will help) - explaining the various sleep/delays introduced in the drivers - explaining some of the differences between mt8195 and "legacy" - retrieve CK/DE support from panel driver instead of hardcoding it into the dpi driver. - better error handling/reporting in mtk_dp - look into re-implementing mtk_dp_aux_transfer() using drm_dp_dpcd_read and drm_dp_dpcd_write as suggested by Rex.
Older revisions: RFC - https://lore.kernel.org/linux-mediatek/20210816192523.1739365-1-msp@baylibre... v1 - https://lore.kernel.org/linux-mediatek/20210906193529.718845-1-msp@baylibre.... v2 - https://lore.kernel.org/linux-mediatek/20210920084424.231825-1-msp@baylibre.... v3 - https://lore.kernel.org/linux-mediatek/20211001094443.2770169-1-msp@baylibre... v4 - https://lore.kernel.org/linux-mediatek/20211011094624.3416029-1-msp@baylibre... v5 - https://lore.kernel.org/all/20211021092707.3562523-1-msp@baylibre.com/ v6 - https://lore.kernel.org/linux-mediatek/20211110130623.20553-1-granquet@bayli... v7 - https://lore.kernel.org/linux-mediatek/20211217150854.2081-1-granquet@baylib... v8 - https://lore.kernel.org/linux-mediatek/20220218145437.18563-1-granquet@bayli...
Functional dependencies are: - Add Mediatek Soc DRM (vdosys0) support for mt8195 https://lore.kernel.org/all/20211026155911.17651-1-jason-jh.lin@mediatek.com... - Add MediaTek SoC DRM (vdosys1) support for mt8195 https://lore.kernel.org/all/20211029075203.17093-1-nancy.lin@mediatek.com/
Guillaume Ranquet (15): dt-bindings: mediatek,dp_phy: Add Display Port PHY binding drm/edid: Convert cea_sad helper struct to kernelDoc drm/edid: Add cea_sad helpers for freq/length drm/mediatek: dpi: move dpi limits to SoC config drm/mediatek: dpi: implement a CK/DE pol toggle in SoC config drm/mediatek: dpi: implement a swap_input toggle in SoC config drm/mediatek: dpi: move dimension mask to SoC config drm/mediatek: dpi: move hvsize_mask to SoC config drm/mediatek: dpi: move swap_shift to SoC config drm/mediatek: dpi: move the yuv422_en_bit to SoC config drm/mediatek: dpi: move the csc_enable bit to SoC config drm/mediatek: dpi: Add dpintf support drm/meditek: dpi: Add matrix_sel helper drm/mediatek: Add mt8195 External DisplayPort support drm/mediatek: DP audio support for mt8195
Jitao Shi (2): drm/mediatek: add hpd debounce drm/mediatek: change the aux retries times when receiving AUX_DEFER
Markus Schneider-Pargmann (5): dt-bindings: mediatek,dpi: Add DP_INTF compatible dt-bindings: mediatek,dp: Add Display Port binding video/hdmi: Add audio_infoframe packing for DP phy: phy-mtk-dp: Add driver for DP phy drm/mediatek: Add mt8195 Embedded DisplayPort driver
.../display/mediatek/mediatek,dp.yaml | 97 + .../display/mediatek/mediatek,dpi.yaml | 11 +- .../bindings/phy/mediatek,dp-phy.yaml | 43 + MAINTAINERS | 1 + drivers/gpu/drm/drm_edid.c | 74 + drivers/gpu/drm/mediatek/Kconfig | 8 + drivers/gpu/drm/mediatek/Makefile | 2 + drivers/gpu/drm/mediatek/mtk_dp.c | 3204 +++++++++++++++++ drivers/gpu/drm/mediatek/mtk_dp_reg.h | 568 +++ drivers/gpu/drm/mediatek/mtk_dpi.c | 222 +- drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 38 + drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 8 + drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 + drivers/gpu/drm/mediatek/mtk_drm_drv.c | 6 +- drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 + drivers/phy/mediatek/Kconfig | 8 + drivers/phy/mediatek/Makefile | 1 + drivers/phy/mediatek/phy-mtk-dp.c | 202 ++ drivers/video/hdmi.c | 82 +- include/drm/dp/drm_dp_helper.h | 2 + include/drm/drm_edid.h | 25 +- include/linux/hdmi.h | 7 +- include/linux/soc/mediatek/mtk-mmsys.h | 3 +- 23 files changed, 4541 insertions(+), 73 deletions(-) create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml create mode 100644 Documentation/devicetree/bindings/phy/mediatek,dp-phy.yaml create mode 100644 drivers/gpu/drm/mediatek/mtk_dp.c create mode 100644 drivers/gpu/drm/mediatek/mtk_dp_reg.h create mode 100644 drivers/phy/mediatek/phy-mtk-dp.c