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drm/i915/dpcd_bl: Cache some backlight capabilities in intel_panel.ba…
…cklight Since we're about to be moving this code into shared DRM helpers, we might as well start to cache certain backlight capabilities that can be determined from the EDP DPCD, and are likely to be relevant to the majority of drivers using said helpers. The main purpose of this is just to prevent every driver from having to check everything against the eDP DPCD using DP macros, which makes the code slightly easier to read (especially since the names of some of the eDP capabilities don't exactly match up with what we actually need to use them for, like DP_EDP_BACKLIGHT_BRIGHTNESS_BYTE_COUNT for instance). Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210514181504.565252-5-lyude@redhat.com
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Lyude Paul
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Jun 9, 2021
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