We tried moving the dmc_firmware_path param from i915 to display params before, so it would be present in xe as well as i915. This was commit 0d82a0d6f556 ("drm/i915/display: move dmc_firmware_path to display params"). That failed, so I tried a quick fix, but that failed too [1]. Revert followed in commit 318e82583ca9 ("Revert "drm/i915/display: move dmc_firmware_path to display params"").
Do some refactoring and prep work first, with the most significant change being the removal of special handling of i915.dmc_firmware_path="" to disable DMC. This will now lead to the platform default firmware being used. To disable DMC and runtime PM, you'll need to specify a non-existent file instead. There's no "magic" name specified for that. BR, Jani. [1] https://lore.kernel.org/r/87h6gieuud....@intel.com Jani Nikula (5): drm/i915/dmc: handle request_firmware() errors separately drm/i915/dmc: improve firmware parse failure propagation drm/i915/dmc: split out per-platform firmware path selection drm/i915/dmc: change meaning of dmc_firmware_path="" module param drm/i915/display: move dmc_firmware_path to display params .../drm/i915/display/intel_display_params.c | 4 + .../drm/i915/display/intel_display_params.h | 1 + drivers/gpu/drm/i915/display/intel_dmc.c | 162 ++++++++++-------- drivers/gpu/drm/i915/i915_params.c | 3 - drivers/gpu/drm/i915/i915_params.h | 1 - drivers/gpu/drm/xe/xe_device_types.h | 3 - 6 files changed, 98 insertions(+), 76 deletions(-) -- 2.39.2