Synaptics' Touch and Display Driver Integration (TDDI) technology [1] employs a single chip for both touchscreen and display capabilities. Such designs reportedly help reducing costs and power consumption.
Although the touchscreens, which are powered by Synaptics' Register-Mapped Interface 4 (RMI4) touch protocol via I2C or SPI have driver support in the kernel, the MIPI DSI display panels don't. This series introduces a rudimentary driver for controlling said display panels, which supports TD4101 and TD4300 panels. [1] https://www.synaptics.com/technology/display-integration Signed-off-by: Kaustabh Chakraborty <kauschl...@disroot.org> --- Changes in v5: - added missing Reviewed-by tag from Krzysztof in [v3 1/2] - Link to v4: https://lore.kernel.org/r/20250819-panel-synaptics-tddi-v4-0-448f466d1...@disroot.org Changes in v4: - utilized drm_connector_helper_get_modes_fixed() (dmitry.baryshkov) - constified backlight properties (dmitry.baryshkov) - Link to v3: https://lore.kernel.org/r/20250720-panel-synaptics-tddi-v3-0-43a5957f4...@disroot.org Changes in v3: - fixed various dt_binding_check errors (robh's bot) - adjusted commit description of [v2 1/2] (robh) - utilized devm_drm_panel_alloc() and devm_regulator_bulk_get_const() - Link to v2: https://lore.kernel.org/r/20250625-panel-synaptics-tddi-v2-0-7a62ab1d1...@disroot.org Changes in v2: - fixed various dt_binding_check errors (conor) - did s/tddi_update_brightness/tddi_update_status - added check for panel enable in tddi_update_status() - used backlight_get_brightness() in appropriate places - Link to v1: https://lore.kernel.org/r/20250612-panel-synaptics-tddi-v1-0-dfb8a425f...@disroot.org --- Kaustabh Chakraborty (2): dt-bindings: display: panel: document Synaptics TDDI panel drm: panel: add support for Synaptics TDDI series DSI panels .../display/panel/synaptics,td4300-panel.yaml | 89 +++++++ drivers/gpu/drm/panel/Kconfig | 11 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-synaptics-tddi.c | 276 +++++++++++++++++++++ 4 files changed, 377 insertions(+) --- base-commit: 5303936d609e09665deda94eaedf26a0e5c3a087 change-id: 20250523-panel-synaptics-tddi-0b0b3f07f814 Best regards, -- Kaustabh Chakraborty <kauschl...@disroot.org>
