disp: msm: add external bridge Support - #20
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For ext_bridge_mode, use DRM bridge callbacks directly for mode detection, mode enumeration, and mode validation instead of routing requests through connector helper operations. Simplify external bridge initialization by removing connector list lookups and assigning the external connector ops. Signed-off-by: Arpit Saini <arpisain@qti.qualcomm.com>
Use drm_of_find_panel_or_bridge() to discover and bind drm bridge/panel. Also rename dsi_display_populate_modes_from_drm_panel() to dsi_display_setup_mode_from_drm() to reflect its broader use beyond DRM panels. Signed-off-by: Arpit Saini <arpisain@qti.qualcomm.com>
In ext_bridge_mode the downstream device is a DRM bridge rather than a DSI panel. Skip panel initialization, lifecycle callbacks, and command handling, as these operations are not relevant. Signed-off-by: Arpit Saini <arpisain@qti.qualcomm.com>
Add DRM mode setup and topology handling for ext_bridge_mode by routing mode configuration through the bridge path and bypassing panel-specific mode operations where applicable. Provide default LM topology information for bridge-backed displays will derive this later dynamically from DPU catalog. Signed-off-by: Arpit Saini <arpisain@qti.qualcomm.com>
…ness Configure video mode parameters from MIPI DSI mode flags and improve bridge initialization and attachment handling. Signed-off-by: Arpit Saini <arpisain@qti.qualcomm.com>
In dsi_phy_hw_calculate_timing_params(), populate host->t_clk_pre and host->t_clk_post from the calculated PHY timing descriptor when both values are not set. Signed-off-by: Arpit Saini <arpisain@qti.qualcomm.com>
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Add support for external DRM bridge connectivity in the DSI display driver.
This series routes connector ops (get_modes, atomic_check) through the external bridge, detects DRM bridges during display bind, and skips DSI panel lifecycle ops.
Mode handling is added for ext_bridge_mode panels, video traffic mode flags are corrected, and bridge attach error handling is tightened.
PHY timing fallback for t_clk_pre/post is added to ensure robust link bring-up with external bridges.